Updated on 2022/08/23

写真a

 
MINAMI, Masayo
 
Organization
Institute for Space-Earth Environmental Research Division for Chronological Research Professor
Graduate School
Graduate School of Environmental Studies
Title
Professor
Contact information
メールアドレス
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Degree 3

  1. 博士(理学) ( 1995.9   電気通信大学 ) 

  2. Master of Science ( 1990.3   The University of Tokyo ) 

  3. 学士(理学) ( 1988.3   東京大学 ) 

Research Interests 5

  1. meteorite

  2. Isotope

  3. Fossil bone

  4. sediment

  5. Radiocarbon

Research Areas 5

  1. Natural Science / Human geosciences  / Isotope Geochemistry

  2. Humanities & Social Sciences / Cultural assets study  / Radiocarbon dating

  3. Environmental Science/Agriculture Science / Environmental dynamic analysis  / Isotopic analysis

  4. Environmental Science/Agriculture Science / Environmental dynamic analysis  / Isotopic analysis

  5. Natural Science / Human geosciences  / Isotope Geochemistry

Current Research Project and SDGs 4

  1. 火葬骨の地球化学的分析

  2. ストロンチウム同位体比の地球化学図

  3. Evaluation of carbonation process in concrete using radiocarbon

  4. 化石骨試料に対する信頼度の高い放射性炭素および炭素・窒素同位体比測定の試み

Research History 20

  1. Nagoya University   Institute for Space-Earth Environmental Research Division for Chronological Research   Professor

    2019.4

  2. 名古屋大学宇宙地球環境研究所   年代測定研究部   准教授

    2015.10

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    Country:Japan

  3. 名古屋大学年代測定総合研究センター   准教授

    2007.4 - 2015.9

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    Country:Japan

  4. Nagoya University   Center for Chronological Research   Associate professor

    2007.4 - 2015.9

  5. Nagoya University   Center for Chronological Research.   Associate professor

    2007.4 - 2015.9

  6. 名古屋大学年代測定総合研究センター   助教授

    2005.6 - 2007.3

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    Country:Japan

  7. Nagoya University   Center for Chronological Research   Assistant Professor

    2005.6 - 2007.3

  8. Nagoya University   Center for Chronological Research.   Assistant Professor

    2005.6 - 2007.3

  9. 名古屋大学大学院環境学研究科地球環境科学専攻   助教授

    2003.4 - 2005.5

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    Country:Japan

  10. Nagoya University   Graduate School of Environmental Studies, Department of Earth and Environmental Sciences   Assistant Professor

    2003.4 - 2005.5

  11. 名古屋大学大学院環境学研究科地球環境科学専攻   助手

    2001.4 - 2003.3

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    Country:Japan

  12. Nagoya University   Graduate School of Environmental Studies, Department of Earth and Environmental Sciences   Assistant

    2001.4 - 2003.3

  13. 名古屋大学大学院理学研究科地球惑星理学専攻   助手

    2000.1 - 2001.3

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    Country:Japan

  14. Nagoya University   Graduate School of Science   Assistant

    2000.1 - 2001.3

  15. Japan Society for Promotion of Science

    1998.4 - 2000.1

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    Country:Japan

  16. 日本学術振興会   特別研究員(PD)

    1998.4 - 2000.1

  17. Japan Society for Promotion of Science

    1998.4 - 2000.1

  18. 名古屋大学年代測定資料研究センター   研究機関研究員

    1996.10 - 1998.3

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    Country:Japan

  19. 名古屋大学年代測定資料研究センター   研究機関研究員

    1996.10 - 1998.3

  20. 名古屋大学年代測定資料研究センター   研究機関研究員

    1996.10 - 1998.3

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Education 4

  1. The University of Electro-Communications   Graduate School, Division of Electro Communications

    1991.4 - 1995.9

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    Country: Japan

  2. The University of Electro-Communications   Graduate School, Division of Electro Communications

    1991.4 - 1995.9

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    Country: Japan

  3. The University of Tokyo

    1988.4 - 1990.3

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    Country: Japan

  4. The University of Tokyo   Faculty of Science

    1984.4 - 1988.3

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    Country: Japan

Professional Memberships 14

  1. The Geochemical Society of Japan   President

    2021.9

  2. 一般社団法人 日本地球化学会   代表理事(副会長)

    2019.9 - 2021.9

  3. 日本AMS研究協会   運営委員

    2006.4

  4. Japan Geoscience Union   Representatives

    2020.4

  5. 日本地球惑星科学連合   顕彰委員会委員

    2020.4

  6. The Geochemical Society of Japan

    2021.9

  7. 日本地球惑星科学連合

    2020.4

  8. Japan Geoscience Union

    2020.4

  9. 日本地球化学会   会計幹事

    2017.11 - 2019.9

  10. 日本地球化学会

    2017.11 - 2019.9

  11. 日本文化財科学会

  12. The Mass Spectrometry Society of Japan

  13. The Mass Spectrometry Society of Japan

  14. 日本文化財科学会

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Committee Memberships 22

  1. The Geochemical Society of Japan   President  

    2021.9   

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    Committee type:Academic society

  2. The Geochemical Sciety of Japan   Vice President  

    2019.9 - 2021.8   

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    Committee type:Academic society

  3. 2020年度日本地球科学会第67回年会   実行委員長  

    2020.5 - 2021.1   

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    Committee type:Academic society

  4. 公益社団法人 日本地球惑星科学連合   代議員  

    2020.4 - 2022.3   

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    Committee type:Academic society

  5. 愛知県   愛知県環境審議会委員  

    2018.11   

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    Committee type:Municipal

  6. The Geochemical Society of Japan   President  

    2021.9   

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    Committee type:Academic society

  7. 愛知県   愛知県環境審議会水質・地盤環境部会委員  

    2020.11   

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    Committee type:Municipal

  8. 愛知県   愛知県環境審議会水質・地盤環境部会委員  

    2020.11   

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    Committee type:Municipal

  9. 公益社団法人 日本地球惑星科学連合   顕彰委員会委員  

    2020.10   

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    Committee type:Academic society

  10. 公益社団法人 日本地球惑星科学連合   顕彰委員会委員  

    2020.10   

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    Committee type:Academic society

  11. 2020年度日本地球科学会第67回年会   実行委員長  

    2020.5 - 2021.1   

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    Committee type:Academic society

  12. 公益社団法人 日本地球惑星科学連合   代議員  

    2020.4 - 2022.3   

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    Committee type:Academic society

  13. The Geochemical Sciety of Japan   Vice President  

    2019.9 - 2021.8   

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    Committee type:Academic society

  14. 愛知県   愛知県環境審議会委員  

    2018.11   

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    Committee type:Municipal

  15. 情報・システム研究機構 国立極地研究所   二次イオン質量分析研究委員会委員  

    2018.4   

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    Committee type:Academic society

  16. 情報・システム研究機構 国立極地研究所   二次イオン質量分析研究委員会委員  

    2018.4   

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    Committee type:Academic society

  17. 日本AMS研究協会   運営委員  

    2017.4   

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    Committee type:Academic society

  18. 日本AMS研究協会   運営委員  

    2017.4   

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    Committee type:Academic society

  19. 愛知県   愛知県環境審議会温泉部会委員  

    2015.1   

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    Committee type:Municipal

  20. 愛知県   愛知県環境審議会温泉部会委員  

    2015.1   

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    Committee type:Municipal

  21. 日本質量分析学会   同位体比部会世話人  

    2011.4   

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    Committee type:Academic society

  22. 日本質量分析学会   同位体比部会世話人  

    2011.4   

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    Committee type:Academic society

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Awards 1

  1. 女性研究者トップリーダー顕彰

    2021.7   名古屋大学  

    南 雅代

 

Papers 467

  1. The impact of pitolisant, an H<inf>3</inf> receptor antagonist/inverse agonist, on perirhinal cortex activity in individual neuron and neuronal population levels

    Hirano K., Morishita Y., Minami M., Nomura H.

    Scientific Reports   Vol. 12 ( 1 )   2022.12

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    Language:Japanese   Publisher:Scientific Reports  

    Histamine is a neurotransmitter that modulates neuronal activity and regulates various brain functions. Histamine H3 receptor (H3R) antagonists/inverse agonists enhance its release in most brain regions, including the cerebral cortex, which improves learning and memory and exerts an antiepileptic effect. However, the mechanism underlying the effect of H3R antagonists/inverse agonists on cortical neuronal activity in vivo remains unclear. Here, we show the mechanism by which pitolisant, an H3R antagonist/inverse agonist, influenced perirhinal cortex (PRh) activity in individual neuron and neuronal population levels. We monitored neuronal activity in the PRh of freely moving mice using in vivo Ca2+ imaging through a miniaturized one-photon microscope. Pitolisant increased the activity of some PRh neurons while decreasing the activity of others without affecting the mean neuronal activity across neurons. Moreover, it increases neuron pairs with synchronous activity in excitatory-responsive neuronal populations. Furthermore, machine learning analysis revealed that pitolisant altered the neuronal population activity. The changes in the population activity were dependent on the neurons that were excited and inhibited by pitolisant treatment. These findings indicate that pitolisant influences the activity of a subset of PRh neurons by increasing the synchronous activity and modifying the population activity.

    DOI: 10.1038/s41598-022-11032-y

    Scopus

  2. S-type like granites and felsic volcanic rocks in the Mahabad area, NW Iran: Late Neoproterozoic extensional tectonics follow collision on the northern boundary of Gondwana

    Gholipour Somayeh, Azizi Hossein, Masoudi Fariborz, Asahara Yoshihiro, Minami Masayo

    LITHOS   Vol. 416   2022.5

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    Language:Japanese   Publisher:Lithos  

    The Late Neoproterozoic basement is exposed in the Mahabad area of northwest Iran, and it is classified into three main groups. The first is metamorphic rocks that include gneiss, schist, phyllite, and slate. The second is sedimentary rocks, which comprise shale, sandstone, and dolomite and the third is igneous rocks including granite, rhyolite, felsic tuff, and ignimbrite, which are the subject of this research. Zircon U[sbnd]Pb ages for three igneous samples show that crystallization occurred at 558–552 Ma in the late Neoproterozoic (Ediacaran). The felsic magmatic rocks have SiO2 contents of 64.3 to 78.9 wt%, Al2O3 contents of 12.0 to 16.8 wt%, low TiO2 contents (0.08 to 0.69 wt%), and large variations in K2O (0.05 to 5.46 wt%) and Na2O (1.17 to 6.70 wt%). The felsic magmatic rocks are enriched in light rare earth elements (REEs) such as La and Sm, have flat heavy REE patterns, and strong negative Eu anomalies. They are mainly weakly to strongly peraluminous and calc-alkalic to alkali-calcic rocks. A wide range of initial 87Sr/86Sr(556Ma) ratios (0.7056 to 0.7203) and negative εNd(t) values (−6.0 to −2.9) do not show clear trends of mixing/contamination among mantle, slab fluids, and/or altered oceanic crust. The Mahabad magmatic rocks were produced mainly by partial melting of graywacke, psammite, and shale at high temperatures (~800 °C), based on the zircon saturation index. S-type like granites usually form in syn- to post-collisional systems, but the Mahabad felsic rocks, which have almost the same ages as the associated sedimentary rocks, were generated in an extensional regime according to geochemical discrimination diagrams. This can be explained as follows: sediments were deeply buried during the late Neoproterozoic amalgamation of microcontinents at a subduction zone along the northern boundary of Gondwana, and then erosion of the roof and/or thinning owing to extension led to upwelling of the asthenosphere and intrusion of mafic magma, which was responsible for partially melting the buried metasedimentary rocks to generate S-type like granites and felsic volcanic rocks.

    DOI: 10.1016/j.lithos.2022.106658

    Web of Science

    Scopus

  3. Activity Report of the Division of Isotope-Ratio Mass Spectrometry 2013–2021

    Hirata Takafumi, Maruoka Teruyuki, Minami Masayo, Sumino Hirochika

    Journal of the Mass Spectrometry Society of Japan   Vol. 70 ( 1 ) page: 90 - 94   2022.3

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    Language:Japanese   Publisher:The Mass Spectrometry Society of Japan  

    DOI: 10.5702/massspec.s22-19

    CiNii Research

  4. Shin’iseihaito (Xinyiqingfeitang) extract ameliorates ovalbumin-induced murine allergic rhinitis by regulating cytokines

    Minami M., Konishi T., Takase H., Makino T.

    Journal of Natural Medicines   Vol. 76 ( 1 ) page: 244 - 253   2022.1

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    Language:Japanese   Publisher:Journal of Natural Medicines  

    Shin’iseihaito (Xinyiqingfeitang) is a formula of traditional Japanese Kampo medicine and traditional Chinese medicine (TCM) and for chronic sinusitis. However, the precise action mechanism has been unknown. We examined the effect of shin’iseihaito extract (SSHT) on murine allergic rhinitis model using ovalbumin (OVA). We decocted the mixture of 9 crude drugs in water to prepare SSHT. SSHT (20 times amount of human dose) was orally administered to mice treated with OVA. After mice were sacrificed on day 28, immunoglobulin (Ig) E, interleukin (IL)-4, IL-13, interferon (IFN)-γ, and thymic stromal lymphopoietin (TSLP) levels in nasal lavage fluid samples were measured by enzyme-linked immunosorbent assay (ELISA). The pathological tissue sections from the nasal epithelial mucosa were histopathologically investigated by optical and scanning electron microscopies. We also investigated the effects of modified SSHTs prepared by removing one crude drug from shin'iseihaito to clarify the active ingredients. SSHT suppressed IgE, IL-4, IL-13, and TSLP levels, while increased the IFN-γ levels in OVA-induced allergic mice. Sensitization with OVA resulted in an increase in eosinophilia and goblet cells in murine nasal cavity tissue in comparison with those in untreated group, however, those were significantly reduced by the treatment with SSHT. The extracts of 8 crude drug's mixtures except for the removal of Gypsum fibrosum (GF) from shin'iseihaito counteracted on the suppressive effects of SSHT on IgE, IL-4, IL-13, and TSLP levels in nasal lavage fluid. Our result demonstrated that SSHT may contribute to inhibit the exacerbation of OVA-induced murine allergic rhinitis by regulating cytokines, and the components except for GF contributed anti-allergic effect of shin'iseihaito. Graphical abstract: [Figure not available: see fulltext.]

    DOI: 10.1007/s11418-021-01585-z

    Scopus

  5. Hadal aragonite records venting of stagnant paleoseawater in the hydrated forearc mantle

    Oyanagi Ryosuke, Okamoto Atsushi, Satish-Kumar Madhusoodhan, Minami Masayo, Harigane Yumiko, Michibayashi Katsuyoshi

    COMMUNICATIONS EARTH & ENVIRONMENT   Vol. 2 ( 1 )   2021.12

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    Language:Japanese   Publisher:Communications Earth and Environment  

    The hadal zone at trenches is a unique region where forearc mantle rocks are directly exposed at the ocean floor owing to tectonic erosion. Circulation of seawater in the mantle rock induces carbonate precipitation within the deep-sea forearc mantle, but the timescale and rates of the circulation are unclear. Here we investigated a peculiar occurrence of calcium carbonate (aragonite) in forearc mantle rocks recovered from ~6400 m water depth in the Izu–Ogasawara Trench. On the basis of microtextures, strontium–carbon–oxygen isotope geochemistry, and radiocarbon analysis, we found that the aragonite is sourced from seawater that accumulated for more than 42,000 years. Aragonite precipitation is triggered by episodic rupture events that expel the accumulated fluids at 10−2–10−1 m s−1 and which continue for a few decades at most. We suggest that the recycling of subducted seawater from the shallowest forearc mantle influences carbon transport from the surface to Earth’s interior.

    DOI: 10.1038/s43247-021-00317-1

    Web of Science

    Scopus

  6. Coexistence of two types of Late Paleocene adakitic granitoid, Soursat complex, NW Iran

    Nouri Fatemeh, Azizi Hossein, Asahara Yoshihiro, Whattam Scott A., Tsuboi Motohiro, Mohammad Yousif Osman, Minami Masayo, Anma Ryo

    LITHOS   Vol. 404   2021.12

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    Language:Japanese   Publisher:Lithos  

    Late Neoproterozoic basement of the Soursat complex to the southeast of Shahin-Dej, NW Iran, spans an area wider than 100 km2 and is cut by Paleogene monzonite and granodiorite bodies. Zircon U-Pb dating yields monzonite and granodiorite crystallization ages of 54.7 ± 3.8 Ma and 57.7 ± 2.9 Ma, respectively. The monzonite group has relatively high MgO (2.40–7.01 wt%), Cr (37.5–233 ppm) and Ni (30.6–177 ppm), and high Sr/Y (103−132) and La/Yb (68.0–102) similar to low silica-adakites (LSA). The granodiorite group has low MgO (<1 wt%), Ni (<10 ppm) and Cr (<33 ppm), and high Sr/Y (192–361) and La/Yb (37.3–156) ratios, and are consistent as high silica-adakites (HSA). The monzonite and granodiorite have 87Sr/86Sr(i) values of 0.7045 to 0.7047 and 0.7053 to 0.7058, and εNd(t) values of +1.1 to +1.8 and − 1.9 to −0.8, respectively. The differing chemical compositions and Sr-Nd isotope ratios of these two groups of coeval adakites suggest different sources. Upon consideration of the geodynamic evolution of NW-Iran during the Cenozoic, we infer a two-stage melting process. LSA melts were first produced due to partial melting of delaminated lithosphere and then modified by fractional crystallization in the lower crust. Subsequently, HSA melts were generated during partial melting of lower crustal mafic segments in the hot root zone.

    DOI: 10.1016/j.lithos.2021.106438

    Web of Science

    Scopus

  7. EVIDENCE OF MASS MORTALITY OF THE LONG-LIVED BIVALVE MERCENARIA STIMPSONI CAUSED BY A CATASTROPHIC TSUNAMI

    Kubota Kaoru, Shirai Kotaro, Murakami-Sugihara Naoko, Seike Koji, Minami Masayo, Nakamura Toshio, Tanabe Kazushige

    RADIOCARBON   Vol. 63 ( 6 ) page: 1629 - 1644   2021.12

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    Language:Japanese   Publisher:Radiocarbon  

    Tsunamis are huge disasters that can significantly damage benthic organisms and the sea-bottom environment in coastal areas. It is of great ecological importance to understand how benthic ecosystems respond to such destructive forces and how individual species are affected. Investigating the effect of such disasters on animals that are seldom caught alive is particularly difficult. Bivalve mollusks are especially suitable for investigating how a tsunami affects coastal benthic species because they preserve an environmental record in their shells that can be extended back in time by crossdating the records of multiple individuals. Here we studied dead shells of Mercenaria stimpsoni, a long-lived clam, and precisely determined the time of death by using nuclear bomb-induced radiocarbon (bomb-14C) and by counting annual growth increments. First, a quasi-continuous, regional bomb-14C record was created by analyzing the shells of 6 live-caught M. stimpsoni individuals. Then 27 dead shells collected from the seafloor of Funakoshi Bay were 14C-dated and analyzed. The results showed that the huge tsunami that struck northeastern Japan on 11 March 2011 caused mass mortality of this bivalve in Funakoshi Bay. Nine of the 27 clams died during the March 2011 tsunami, probably by starvation after burial by tsunami deposits or exposure above the seafloor as a result of sediment liquefaction during the earthquake. The dating method used in this study can help us understand how long-lived marine organisms with low population density are affected by huge natural disasters such as a tsunami.

    DOI: 10.1017/RDC.2021.98

    Web of Science

    Scopus

  8. Effect of Lonicera caerulea on cytokine production of alveolar macrophages by stimulation with SARS-CoV-2-related proteins

    Minami M., Nakamura M.

    International Journal of Antimicrobial Agents   Vol. 58   2021.9

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    Language:Japanese   Publisher:International Journal of Antimicrobial Agents  

    DOI: 10.1016/j.ijantimicag.2021.106421.76

    Scopus

  9. A SIMPLE CO2 EXTRACTION METHOD FOR RADIOCARBON ANALYSES OF DISSOLVED INORGANIC CARBON IN WATER SAMPLES WITHOUT A CARRIER GAS

    Takahashi Hiroshi A., Handa Hiroko, Minami Masayo

    RADIOCARBON   Vol. 63 ( 4 ) page: 1339 - 1353   2021.8

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    Language:Japanese   Publisher:Radiocarbon  

    We developed a simple and cost-effective method for extracting carbon from dissolved inorganic carbon (DIC) in water samples without a carrier gas. This method only slightly modifies the existing vacuum line for CO2 purification in radiocarbon research laboratories by connecting several reservoirs and traps. The procedure consists of repeated cycles of CO2 extraction from water into the headspace of the reaction container, expansion of the extracted gas into the vacuum line, and cryogenic trapping of CO2. High CO2 yield (∼98%) was obtained from a variety of water samples with a wide range of DIC concentrations (0.4-100 mmol·L-1, in the case of 1.2 mgC). The δ13C fractionation depended on the CO2 yield, while the 14C concentration was constant within the error range, regardless of the CO2 yield. The average δ13C discrepancy between the results of this method and direct analyses made using the GC-IRMS was 0.02 ± 0.06‰. The standard deviations (1σ) in fraction of modern carbon (F14C) ranged from 0.0002 to 0.0004 for waters below 0.01 of F14C, and below 0.8% of F14C values for waters above 0.1. We conclude that this method is useful for effectively extracting CO2 from DIC in water and yields accurate 14C data.

    DOI: 10.1017/RDC.2021.48

    Web of Science

    Scopus

  10. Early Miocene post-collision andesite in the Takab area, northwest Iran Reviewed International coauthorship

    Hossein Azizi, Narges Daneshvar, Asrin Mohammadi, Yoshihiro Asahara, Scott A Whattam, Motohiro Tsuboi, Masayo Minami

    Journal of Petrology   Vol. 62 ( 7 )   2021.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1093/petrology/egab022

    Web of Science

    Scopus

  11. Geochemistry and Genesis of Beryl Crystals in the LCT Pegmatite Type, Ebrahim-Attar Mountain, Western Iran

    Daneshvar Narges, Azizi Hossein, Asahara Yoshihiro, Tsuboi Motohiro, Minami Masayo, Mohammad Yousif O.

    MINERALS   Vol. 11 ( 7 )   2021.7

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    Language:Japanese  

    DOI: 10.3390/min11070717

    Web of Science

  12. Early Miocene post-collision andesite in the Takab area, northwest Iran Reviewed International coauthorship

    Hossein Azizi, Narges Daneshvar, Asrin Mohammadi, Yoshihiro Asahara, Scott A Whattam, Motohiro Tsuboi, Masayo Minami

    Journal of Petrology     2021.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1093/petrology/egab022

  13. Syngenetic rapid growth of ellipsoidal silica concretions with bitumen cores Reviewed International coauthorship

    Yoshida Hidekazu, Kuma Ryusei, Hasegawa Hitoshi, Katsuta Nagayoshi, Sirono Sin-iti, Minami Masayo, Nishimoto Shoji, Takagi Natsuko, Kadowaki Seiji, Metcalfe Richard

    SCIENTIFIC REPORTS   Vol. 11 ( 1 ) page: 4230   2021.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Scientific Reports  

    Isolated silica concretions in calcareous sediments have unique shapes and distinct sharp boundaries and are considered to form by diagenesis of biogenic siliceous grains. However, the details and rates of syngenetic formation of these spherical concretions are still not fully clear. Here we present a model for concretion growth by diffusion, with chemical buffering involving decomposition of organic matter leading to a pH change in the pore-water and preservation of residual bitumen cores in the concretions. The model is compatible with some pervasive silica precipitation. Based on the observed elemental distributions, C, N, S, bulk carbon isotope and carbon preference index (CPI) measurements of the silica-enriched concretions, bitumen cores and surrounding calcareous rocks, the rate of diffusive concretion growth during early diagenesis is shown using a diffusion-growth diagram. This approach reveals that ellipsoidal SiO2 concretions with a diameter of a few cm formed rapidly and the precipitated silica preserved the bitumen cores. Our work provides a generalized chemical buffering model involving organic matter that can explain the rapid syngenetic growth of other types of silica accumulation in calcareous sediments.

    DOI: 10.1038/s41598-021-83651-w

    Web of Science

    Scopus

    PubMed

  14. Characteristics in Trace Elements Compositions of tephras (B-Tm and To-a) for Identification tools Reviewed

    Fumiko Watanabe Nara, Tatsunori Yokoyama, Shin-Ichi Yamasak, Masayo Minam, Yoshihiro Asahara, Takahiro Watanabe, Kazuyoshi Yamada, Noriyoshi Tsuchiya, Yoshinori Yasuda

    Geochemical Journal   Vol. 55 ( 3 ) page: 117 - 133   2021

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:GEOCHEMICAL SOC JAPAN  

    The absolute date of the Millennium Eruption (ME) of Changbaishan Volcano is widely recognized as AD 946. The Baegdusan-Tomakomai (B-Tm) tephra dispersed during the ME is a robust-age key bed. In order to identify the tephra, refractive index and major- element compositions of volcanic glass shards are conventionally used. Meanwhile, traceelement analysis using the inductively coupled plasma mass spectrometry (ICP- MS) technique for the volcanic glass shards and bulk samples of the B- Tm tephra is still limited. Here we give a detailed description of major- and traceelement compositions for the glass shards and bulk sediments of the B-Tm and Towada caldera eruptions (To-a) tephra deposits from the Lake Ogawara sediment core, Tohoku region, northern Japan to identify the tephras. The depth profiles of the major and trace elements show the significant peaks for the K2O and some trace elements (Zn, Rb, Zr, Nb, Sn, Y, La, Ce, Nd, Th, and U) at the B-Tm tephra layer in the Lake Ogawara sediment core, but no peaks of these elements at the Toa tephra layer. High concentrations of the trace elements in the B- Tm tephra layer were observed in individual glass shards as well as in the bulk sediment. These concentrations are highlighted by the elemental abundance pattern normalized by the crustal abundance. The elemental pattern in individual glass shards from other Japanese tephras showed significant differences from those of the B-Tm tephra, especially in REE compositions. The trace-element compositions of the glass shards and bulk sediments show a strong tool for distinguishing the B-Tm tephra from other Japanese tephras.

    DOI: 10.2343/geochemj.2.0619

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  15. 火葬骨・木炭の放射性炭素年代測定

    南 雅代

    松原市 立部遺跡発掘調査報告書   Vol. ー   page: 68 - 72   2021

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  16. 土壌資料のストロンチウム同位体分析

    若木 重行, 南 雅代

    松原市 立部遺跡発掘調査報告書   Vol. ー   page: 78 - 80   2021

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  17. 人骨のストロンチウム同位体分析

    若木 重行, 南 雅代

    松原市 立部遺跡発掘調査報告書   Vol. ー   page: 73 - 77   2021

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  18. <b>Spherical concretion formation - understandings and applications-</b>

    Yoshida Hidekazu, Yamamoto Koshi, Maruyama Ippei, Asahara Yoshihiro, Minami Masayo, Sirono Sin-iti, Hasegawa Hitoshi, Katsuta Nagayoshi, Nishimoto Shoji, Muramiya Yusuke, Kuma Ryusei, Takeuchi Shinji, Matsui Hiroya, Karukaya Koichi, Metcalfe Richard

    Annual Meeting of the Geological Society of Japan   Vol. 2021 ( 0 ) page: 009   2021

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    Language:Japanese   Publisher:The Geological Society of Japan  

    DOI: 10.14863/geosocabst.2021.0_009

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  19. (Invited)The occurrence and formation process of glendonite concretion

    Muramiya Yusuke, Yoshida Hidekazu, Minami Masayo, Mikami Tomoyuki, Kobayashi Toshinori, Sekiuchi Kousuke, Katsuta Nagayoshi

    Annual Meeting of the Geological Society of Japan   Vol. 2021 ( 0 ) page: 003   2021

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    Language:Japanese   Publisher:The Geological Society of Japan  

    DOI: 10.14863/geosocabst.2021.0_003

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  20. Study on application of strontium isotope stratigraphy to carbonate concretions

    Asahara Yoshihiro, Yoshida Hidekazu, Minami Masayo, Yamamoto Koshi, Katsuta Nagayoshi

    Annual Meeting of the Geological Society of Japan   Vol. 2021 ( 0 ) page: 007   2021

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    DOI: 10.14863/geosocabst.2021.0_007

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  21. Sequential magma injection with a wide range of mixing and mingling in Late Jurassic plutons, southern Ghorveh, western Iran Reviewed International coauthorship

    Azizi Hossein, Asahara Yoshihiro, Minami Masayo, Anma Ryo

    JOURNAL OF ASIAN EARTH SCIENCES   Vol. 200   2020.9

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    Intrusive bodies with a wide-ranging geology are distributed in the central part of the Sanandaj-Sirjan zone (C–SaSZ) in southern Ghorveh, western Iran. The zircon U–Pb ages were dated at 154–146 Ma, and were characterized by low 87Sr/87Sr(i) ratios and high 143Nd/144Nd(i) ratios that ranged from 0.7035 to 0.7061 and 0.51245 to 0.51271, respectively (positive εNd(t) values). Magma differentiation and mixing formed different magmatic rocks that range widely from gabbro to granite in the Meiham–Shirvaneh area in southern Ghorveh. However, there was no clear evidence to support the slab role for the enrichment of large-ion lithophile elements (LILEs) and light rare–earth elements (LREEs) in this area. Meanwhile, there is a possibility that some ocean island basalt-like melt, which has been reported in the Ghorveh area for the same period, was involved in the minor enrichment of LILEs and LREEs. The high development of the released depleted mantle melts, with a minor role played by crustal components, accelerated the thinning of the continental crust in an extensional regime such as continental rift in the C–SaSZ during the Jurassic. This rift was responsible for the sequential injection of mafic magma with a wide range of magma mixing and mingling in southern Ghorveh during the Late Jurassic. As a result, we observed a wide range of intrusive rocks from gabbro to granite with different compositions, which included some clear mixing and hybrid textures. This finding demonstrated how the released mantle melt formed a thicker crust in western Iran.

    DOI: 10.1016/j.jseaes.2020.104469

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  22. Variability of protoliths and pressure-temperature conditions of amphibolites from the Ohmachi Seamount (Izu-Bonin-Mariana arc): Evidence of a fossil subduction channel in modern intra-oceanic arcs Reviewed

    Imayama, T, Ueda, H, Usuki, T, Minami, M, Asahara, Y, Nagahashi, T

    Mineralogy and Petrology   Vol. 114 ( 4 ) page: 305 - 318   2020.8

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  23. Extrapulmonary Problems Limit the Outcome of Lung Transplantation in Idiopathic Pleuroparenchymal Fibroelastosis: A Multi-Center Study in Japan

    Shiiya H., Nakajima J., Date H., Chen-Yoshikawa T., Tanizawa K., Handa T., Oto T., Otani S., Shiotani T., Okada Y., Matsuda Y., Shiraishi T., Moroga T., Minami M., Funaki S., Chida M., Yoshino I., Hatachi G., Sato M.

    JOURNAL OF HEART AND LUNG TRANSPLANTATION   Vol. 39 ( 4 ) page: S313 - S314   2020.4

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  24. Investigation of rare earth elements (REEs) as exploration potential in Intrusive bodies in the northern Sanandaj-Sirjan zone (Kurdistan area), western Iran International coauthorship

    Azizi Hossein, Maghsoudloo Ali, Nouri Fatemeh, Asahara Yoshihiro, Yamamoto Koshi, Minami Masayo, Tsuboi Motohiro

    GEOCHEMICAL JOURNAL   Vol. 54 ( 4 ) page: 221 - 232   2020

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    <p>Various granitoid bodies from the Neoproterozoic to Late Cenozoic intruded in the Sanandaj-Sirjan zone (SaSZ) in western Iran. In this research, we have compiled data for rare earth elements (REEs) concentration in the granitoid bodies which we have collected in the northern part of the SaSZ in this decade. The abundances of ∑REEs in a part of the granitoids are over 500 and even 2000 ppm. Although most of the granitoids such as Ebrahim Atar, Panjeh, Ghorveh, Kangareh, and Ghalaylan have low or normal values of ∑REEs and are not hopeful for future exploration, some hopeful bodies such as the Mobarak Abad granitoid in the east of Sanandaj and the Hassansalaran A-type granites in the east of Saqqez are recognized as REEs potential for future exploration. The chemical compositions of the REEs-enriched granites such as the Hassansalaran A-type and Mobarak Abad granites infer that the granites were generated in an extensional tectonic regime. Our finding shows that the granitic rocks which are related to the within plate tectonic setting in the SaSZ, NW Iran, can be considered as good potential for REEs exploration in the future.</p>

    DOI: 10.2343/geochemj.2.0584

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    CiNii Research

  25. 巨石のSr同位体比と埋没木片の14C年代からみた前橋泥流. Reviewed

    南 雅代

    群馬県立自然史博物館研究報告   Vol. 24   page: 31 - 42   2020

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  26. Summary of EA-AMS 8 Symposium held at Nagoya University, Japan

    南 雅代

    Proceedings of EA-AMS 8 & JAMS-22   Vol. 1   page: 2 - 10   2020

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  27. Maintenance records in the last two decades of the HVEE 14C AMS system at Nagoya University

    南 雅代

    Proceedings of EA-AMS 8 & JAMS-22   Vol. 1   page: 27 - 43   2020

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  28. New procedure of CO2 extraction for radiocarbon analysis of DIC in water samples at Nagoya University and Geological Survey of Japan. International coauthorship

    南 雅代

    Proceedings of EA-AMS 8 & JAMS-22   Vol. -   page: 60 - 63   2020

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  29. Radiocarbon dating of cremated bones from the Ishibotoke-dani of Binman-ji Temple in Taga, Shiga Prefecture, Japan: A preliminary report. International coauthorship

    南 雅代

    Proceedings of EA-AMS 8 & JAMS-22   Vol. -   page: 94 - 97   2020

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  30. Suppressive effects of hainosan (painongsan) against biofilm production by streptococcus mutans

    Minami M., Takase H., Taira M., Makino T.

    Dentistry Journal   Vol. 8 ( 3 )   2020

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    Streptococcus mutans, a bacterium that causes dental plaques, forms a biofilm on tooth surfaces. This biofilm can cause gingivitis by stimulating the gingival margin. However, there is no established treatment for biofilm removal. Hainosan (Painongsan), a traditional Japanese Kampo formula, has been used to treat gingivitis. Therefore, we investigated the biofilm suppressive effects of the hainosan extract (HNS) and its components on S. mutans. We conducted scanning electron microscopy and confocal laser microscopy analyses to clarify the anti-biofilm activities of HNS and its crude drugs. We also performed a quantitative RT-PCR assay to assess the biofilm-related gene expression. HNS showed a significant dose-dependent suppressive effect on biofilm formation. Both the scanning electron microscopy and confocal laser microscopy analyses also revealed the significant inhibitory effects of the extract on biofilm formation. Transmission electron microscopy analysis showed that HNS disrupted the surface of the bacterial wall. Furthermore, HNS reduced the hydrophobicity of the bacteria, and suppressed the mRNA expression of β-glucosyltransferase (gtfB), glucosyltransferase-SI (gtfC), and fructosyltransferase (ftf). Among the constituents of hainosan, the extract of the root of Platycodon grandiflorum (PG) showed the strongest biofilm suppression effect. Platycodin D, one of the constituent natural compounds of PG, inhibited S. mutans-associated biofilm. These findings indicate that hainosan eliminates dental plaques by suppressing biofilm formation by S. mutans.

    DOI: 10.3390/DJ8030071

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  31. イラン北西部アリ・サドル洞窟のつらら石のU/Th年代, 14C年代, 炭素・酸素安定同位体比

    堀川 恵司, 南 雅代, 安間 了

    都市文明の本質:古代西アジアにおける都市の発生と変容の学際研究 研究成果報告2019年度   Vol. 1   page: 187 - 195   2020

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  32. A SUITABLE PROCEDURE FOR PREPARING OF WATER SAMPLES USED IN RADIOCARBON INTERCOMPARISON Reviewed

    Takahashi H. A, Minami M, Aramaki T, Handa H, Saito-Kokubu Y, Itoh S, Kumamoto Y

    RADIOCARBON   Vol. 61 ( 6 ) page: 1879 - 1887   2019.12

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    DOI: 10.1017/RDC.2019.104

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  33. RADIOCARBON DATING OF TEXTILE COMPONENTS FROM HISTORICAL SILK COSTUMES AND OTHER CLOTH PRODUCTS IN THE RYUKYU ISLANDS, JAPAN

    Nakamura Toshio, Terada Takako, Ueki Chikako, Minami Masayo

    RADIOCARBON   Vol. 61 ( 6 ) page: 1663 - 1674   2019.12

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    DOI: 10.1017/RDC.2019.105

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  34. EFFECT OF CRYSTALLINITY OF APATITE IN CREMATED BONE ON CARBON EXCHANGES DURING BURIAL AND RELIABILITY OF RADIOCARBON DATING

    Minami M, Mukumoto H, Wakaki S, Nakamura T

    RADIOCARBON   Vol. 61 ( 6 ) page: 1823 - 1834   2019.12

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    DOI: 10.1017/RDC.2019.97

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  35. In-flight S-band telemetry attenuation by ionized solid rocket motor plumes at high altitude

    Kinefuchi Kiyoshi, Yamaguchi Hiroyuki, Minami Mineko, Okita Koichi, Abe Takashi

    ACTA ASTRONAUTICA   Vol. 165   page: 373 - 381   2019.12

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  36. The immunostimulatory effects and chemical characteristics of heated honey

    Ota M., Ishiuchi K., Xu X., Minami M., Nagachi Y., Yagi-Utsumi M., Tabuchi Y., Cai S.Q., Makino T.

    Journal of Ethnopharmacology   Vol. 228   page: 11 - 17   2019.1

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    Ethnopharmacological relevance: In traditional Chinese medicine (TCM), honey has been used as an additive in the heat-processing of herbal medicines to enhance their immunostimulatory activities. Aim of the study: We investigated the immunostimulatory activity of heated honey in vitro and in vivo. Materials and methods: For the in vitro study, we compared the differences among the inducible effects of honey subjected to various heating conditions on granulocyte colony-stimulating factor (G-CSF) secretion from the cultured enterocytes and investigated the active ingredient. For the in vivo study, we conducted a survival test of mice infected by Streptococcus pyogenes with and without oral administration of heated honey. Results: We found that heating the honey induced the appearance of G-CSF secretions from the cultured enterocytes, and that this appearance depended on the heating temperature and time. No G-CSF secretions appeared when honey was not heated. Mice infected with Streptococcus pyogenes that were fed heated honey revealed prolonged survival. The active ingredient in heated honey was a high-molecular compound with about 730 kDa. When this compound was hydrolyzed, galactose, glucose, rhamnose, α-ribofuranose β-ribofuranose 1,5′:1′,5-dianhydride, and 5-hydroxymethylfurfural were generated. Conclusions: Heated honey reveals immunostimulatory activity both in vitro and in vivo. These results support the scientific evidences of the TCM theory.

    DOI: 10.1016/j.jep.2018.09.019

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  37. 西アジアの古環境復元に向けてーイラン北西部のザグロス山脈に分布する石灰質化学沈殿岩の現地調査報告

    南 雅代

    新学術領域研究(研究領域提案型)「都市文明の本質: 古代西アジアにおける都市の発生と変容の学際研究」研究成果報告2018年度   Vol. -   page: 143 - 148   2019

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  38. 火山泥流に含まれる木片の14C不一致年代:前橋泥流と塚原泥流の例

    南 雅代, 中村 俊夫

    群馬県立自然史博物館研究報告   Vol. 23   page: 57 - 64   2019

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  39. 多段階の堆積サイクルを経た堆積物・堆積岩における源岩の初期Sr同位体比の保持に関する検討―淡路島の河川堆積物を例に― Reviewed

    南 雅代

    地球化学   Vol. 53   page: 59 - 70   2019

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  40. 西アジアの古環境復元に向けて-イラン北西部のザグロス山脈に分布する石灰質化学沈殿岩の現地調査報告

    淺原 良浩, 南 雅代

    「都市文明の本質:古代西アジアにおける都市の発生と変容の学際研究」2018年度研究成果報告   Vol. 1   page: 143 - 148   2019

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  41. Methanol extract of Lonicera caerulea var. emphyllocalyx fruit has antibacterial and anti-biofilm activity against Streptococcus pyogenes in vitro

    Minami M., Takase H., Nakamura M., Makino T.

    BioScience Trends   Vol. 13 ( 2 ) page: 145 - 151   2019

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    Streptococcus pyogenes causes several infectious diseases such as tonsillitis, cellulitis, and streptococcal toxic shock syndrome. As antibiotics are used for the general treatment of S. pyogenes infection, cases of treatment failure due to drug-resistant bacteria have increased. Lonicera caerulea var. emphyllocalyx (LCE) has been used as a folk medicine in northern Japan (Hokkaido). In this study, we investigated the antibacterial effect of methanol extracts of the fruit, stem, and leaf of LCE (LCEEs) against S. pyogenes using disk diffusion assay. As LCEE (fruit) had the strongest antibacterial activity among the three LCEEs, we focused on functional analysis of antibacterial effects of LCEE (fruit). LCEE (fruit) suppressed the growth of S. pyogenes in a dose-dependent manner. Morphological analysis by transmission electron microscopy demonstrated that LCEE (fruit) damaged the shape of S. pyogenes. Microplate and confocal laser microscopy analysis showed that biofilm formation was also suppressed by LCEE (fruit) in a dose-dependent manner. To further evaluate the surface structure of these biofilms, we performed hydrophobic analysis, which demonstrated that LCEE (fruit) reduced the hydrophobicity of the bacterial surface structure. Our data demonstrated that LCEE (fruit) had anti-bacterial and anti-biofilm effects on S. pyogenes in vitro, suggesting that the direct anti-bacterial effects of the LCEE (fruit) may be useful for treatment of local S. pyogenes infection.

    DOI: 10.5582/bst.2019.01005

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  42. Effect of Lonicera caerulea var. emphyllocalyx Fruit on Biofilm Formed by Porphyromonas gingivalis

    Minami M., Takase H., Nakamura M., Makino T.

    BioMed Research International   Vol. 2019   2019

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    Porphyromonas gingivalis is an important pathogenic anaerobic bacterium that causes aspiration pneumonia. This bacterium frequently forms biofilms in the oral cavity and in respiratory tract-associated medical devices. Bacterial colonization that occurs in association with this biofilm formation is the main reason for incurable aspiration pneumonia. The Lonicera caerulea var. emphyllocalyx (LCE) fruit has been used in folk medicine in Hokkaido, the northern part of Japan. The aim of this study was to elucidate one of the antimicrobial mechanisms of LCE methanol extract (LCEE) - the inhibitory effect of LCEE on biofilm formation by P. gingivalis. Our results show that LCEE significantly reduced biofilm formation by three different P. gingivalis isolates in a concentration- and time-dependent manner that were quantified by the adsorption of safranin red. When LCEE was added to biofilms already formed by P. gingivalis, LCEE did not degrade the biofilm. However, treatment with LCEE significantly promoted the removal of existing biofilm by vibration compared to that of control. We also confirmed biofilm formation in LCEE-treated P. gingivalis in tracheal tubes using scanning electron microscopic (SEM) analysis. Cyanidin 3-O-glucoside (C3G), one of the components of LCE, also inhibited the formation of biofilm by P. gingivalis in a concentration-dependent manner. Our results reveal that LCEE may be an effective antibacterial substance for P. gingivalis-induced aspiration pneumonia because of its role in the suppression of bacterial biofilm formation in the oral cavity.

    DOI: 10.1155/2019/3547858

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  43. Effect of Lonicera caerulea var. emphyllocalyx Extracts on Murine Streptococcus pyogenes Infection by Modulating Immune System

    Minami M., Nakamura M., Makino T.

    BioMed Research International   Vol. 2019   2019

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    Streptococcus pyogenes (S. pyogenes) causes several infectious diseases such as tonsillitis, cellulitis, and streptococcal toxic shock syndrome. The general treatment of S. pyogenes infection is by using β-lactam antibiotics; however, the cases of treatment failure were increasing as serious problems. Lonicera caerulea var. emphyllocalyx (LCE) has been used in the folk medicine in the northern part of Japan, the northern part of China, Korea, and Russia. In this study, we investigated the efficacy of three parts (fruit, stem, and leaf) of Lonicera caerulea var. emphyllocalyx extract (LCEEs) against murine S. pyogenes infection. Oral administration of LCEEs increased the mortality in murine model, and the extracts of its stems and leaves were more effective than the fruit extract significantly. Murine splenocytes and mesenteric lymph nodal cells treated with LCEEs suppressed the excess production of inflammatory cytokine such as TNF-α in comparison to those from untreated cells. LCEEs stimulated the differentiation of pluripotent hematopoietic stem cells in those murine lymph nodal cells. It also activated the proliferative response of murine lymph nodal cells. We also found that the stem and leaf extracts seemed to be more effective than the fruit extract in those phenomena. The concentration of lignins in LCEE prepared from the stems was larger than that from leaves, and that was larger than that from the fruits. Our data suggest that LCE, especially the stems and the leaves, may be useful for the treatment of S. pyogenes infection.

    DOI: 10.1155/2019/1797930

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  44. Fe-oxide concretions formed by interacting carbonate and acidic waters on Earth and Mars

    Yoshida H, Hasegawa H, Katsuta N, Maruyama I, Sirono S, Minami M, Asahara Y, Nishimoto S, Yamaguchi Y, Ichinnorov N, Metcalfe R

    SCIENCE ADVANCES   Vol. 4 ( 12 )   2018.12

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    DOI: 10.1126/sciadv.aau0872

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  45. Sr-87/Sr-86 compositional linkage between geological and biological materials: A case study from the Toyota granite region of Japan

    Minami M, Suzuki K

    CHEMICAL GEOLOGY   Vol. 484   page: 224 - 232   2018.5

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    DOI: 10.1016/j.chemgeo.2018.03.013

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  46. 火山体崩壊に起因する火山災害軽減のためのパイロット研究:木片の14C年代測定と巨石のSr同位体比からみた前橋泥流の時空分布

    南 雅代, 中村 俊夫

    名古屋大学年代測定研究   Vol. 2   page: 35 - 39   2018

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  47. 木片の14C年代測定による前橋泥流堆積時期の再検討(予察) Reviewed

    南 雅代, 中村 俊夫

    群馬県立自然史博物館研究報告   Vol. 22   page: 95 - 101   2018

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  48. 名古屋大学タンデトロンAMS 14Cシステムの現状と利用(2017)

    中村 俊夫, 南 雅代

    年代測定研究   Vol. 2   page: 79 - 87   2018

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  49. Comparison between the Effects of Oral and Intramuscular Administration of Shin'iseihaito (Xinyiqingfeitang) in a Streptococcus pyogenes -Induced Murine Sinusitis Model

    Minami M., Konishi T., Takase H., Makino T.

    Evidence-based Complementary and Alternative Medicine   Vol. 2018   2018

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    Streptococcus pyogenes (S. pyogenes) is a species of Gram-positive coccoid bacteria having many virulence factors. Its capsule and exotoxins can cause upper respiratory tract infections such as sinusitis. The general treatment for S. pyogenes-induced sinusitis is administration of antibiotics such as penicillin and macrolides; however, a serious problem associated with these antibiotics is their attenuated effect. Shin'iseihaito (Xinyiqingfeitang), a formula of Japanese traditional Kampo medicine and traditional Chinese medicine, has been used for the treatment of sinusitis. In general, formulas of Japanese traditional Kampo medicine are orally administered. This is in contrast to certain formulas of traditional Chinese medicine, which are being recently administered intramuscularly or intravenously. Regarding these traditional Chinese medicine formulas, the injection methodology is reported to be more effective than oral intake. In this study, we compared the efficacy between orally and intramuscularly administered Shin'iseihaito against S. pyogenes-induced sinusitis. We evaluated the antibacterial effect of Shin'iseihaito extract (SSHT) against S. pyogenes by K-B disk diffusion assay. Furthermore, we investigated the nasal colonization of S. pyogenes, determined cytokine (TNF-α, IL-1β, and IL-6) levels, and conducted a splenocyte proliferative assay in a murine sinusitis model. SSHT displayed direct anti-S. pyogenes activity. Intramuscular administration of SSHT decreased the nasal colonization of S. pyogenes compared with oral administration. Thymidine uptake analysis revealed that the proliferation of splenocytes from S. pyogenes-infected mice under intramuscular SSHT treatment was upregulated compared to that of splenocytes from S. pyogenes-infected mice under oral SSHT treatment. We also found that TNF-α, IL-1β, and IL-6 levels in the nasal discharge from intramuscularly treated S. pyogenes-infected mice were lower than those from orally treated mice. Our findings suggest that intramuscular administration of Shin'iseihaito may be useful for the treatment of murine S. pyogenes-induced sinusitis.

    DOI: 10.1155/2018/8901215

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  50. 蛍光X線分析法による岩石試料の定量化学分析:(1)主成分元素

    加藤 丈典, 南 雅代

    名古屋大学年代測定研究   Vol. I   page: 66 - 71   2017

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  51. 炭化物の高確度14C年代測定のための試料調製法の検討

    南 雅代, 冨山 慎二, 中村 俊夫

    第19回AMSシンポジウム報告集   Vol. 19   page: 82 - 85   2017

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  52. 炭化物の高確度14C年代測定のための試料調製法の検討

    南 雅代, 中村 俊夫

    第19回AMSシンポジウム・2016年度「樹木年輪」研究会報告集   Vol. 1   page: 82 - 85   2017

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  53. A distinctive chemical composition of the tektites from Thailand and Vietnam, and its geochemical significance. Reviewed International coauthorship

    南 雅代

    Jour. Petrol. Soc. Korea   Vol. 26   page: 281 - 295   2017

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  54. Antibacterial activity of shin'iseihaito (Xinyiqingfeitang) and its components against methicillin-resistant staphylococcus aureus

    Konishi T., Minami M., Makino T.

    Pharmacognosy Journal   Vol. 9 ( 3 ) page: 310 - 314   2017

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    Language:Japanese   Publisher:Pharmacognosy Journal  

    Objective: Shin'iseihaito (xinyiqingfeitang in Chinese, SSHT), a formula in traditional Japanese Kampo medicine and Chinese medicine comprising nine crude drugs, Gypsum, Ophiopogon Tuber, Scutellaria Root (SR, root of Scutellaria baicalensis), Gardenia Fruit, Anemarrhena Rhizome, Lilium Bulb, Magnolia Flower, Loquat Leaf, and Cimicifuga Rhizome (CR, rhizome of Cimicifuga heracleifolia), is commonly used to treat sinusitis associated with purulent nasal discharge and reddish nasal mucosa. We evaluated anti-bacterial activity of SSHT extract on methicillin-resistant Staphylococcus aureus (MRSA), one cause of bacterial sinusitis. Materials and Methods: Sterile paper disks impregnated with SSHT extract, the combination of crude drugs composing SSHT according to the traditional pharmacological theory, or each component were placed on Mueller-Hinton agar plates inoculated with several strains of MRSA isolated from the patients. The diameter of inhibitory zone was measured after 18-24 h incubation. Results: SSHT extract showed antibacterial activity against 128/190 (66.8%) MRSA clinical isolates. The effect of the extract of SSHT without heat-clearing drugs (SSHT-HC) or without exterior-releasing drugs (SSHT-ER) were significantly lower than that of SSHT extract. Each water extract of SR, Loquat Leaf, Magnolia Flower and CR showed significant anti-MRSA activity, and SR extract exhibited the largest inhibitory zone. Conclusions: SSHT has antibacterial activity against MRSA clinical isolates, and SR mainly contributes to the antibacterial activity of SSHT against MRSA clinical isolates.

    DOI: 10.5530/pj.2017.3.53

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  55. Effect of Shin'iseihaito (Xinyiqingfeitang) on Acute Streptococcus pneumoniae Murine Sinusitis via Macrophage Activation

    Minami M., Konishi T., Takase H., Jiang Z., Arai T., Makino T.

    Evidence-based Complementary and Alternative Medicine   Vol. 2017   2017

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    Streptococcus pneumoniae (S. pneumoniae) causes sinusitis. The general treatment of S. pneumonia sinusitis is by using antibiotics; however, one of their serious problems is the attenuation of their effect. Shin'iseihaito (Xinyiqingfeitang), a formula of Japanese traditional Kampo medicine, has been used for the treatment of sinusitis in Japan. In this study, we investigated the efficacy of Shin'iseihaito against S. pneumoniae-caused sinusitis in mice. Oral administration of Shin'iseihaito extract (SSHT) decreased the nasal colonization of S. pneumoniae in both prophylactic and therapeutic treatments, respectively, and the former was more effective than the latter. Histopathological analysis revealed that the epithelial tissue from S. pneumoniae-infected nose under SSHT treatment recovered the tissue destruction in comparison to infected nose. We also confirmed this result by scanning electron microscopic analysis. Murine peritoneal macrophages from SSHT-treated mice had significant phagocytic activity in comparison to those from untreated group. We also found that tumor necrosis factor-α, interleukin-1β, interleukin-6, and monocyte chemotactic protein-1 levels and the migration of macrophages from S. pneumoniae-infected mice with the treatment with SSHT were increased compared to those from untreated group. Our data suggest that Shin'iseihaito may be useful for the treatment of S. pneumoniae-induced sinusitis.

    DOI: 10.1155/2017/4293291

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  56. Shin'iseihaito (Xinyiqingfeitang) suppresses the biofilm formation of streptococcus pneumoniae in vitro

    Minami M., Konishi T., Takase H., Makino T.

    BioMed Research International   Vol. 2017   2017

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    Streptococcus pneumoniae (S. pneumoniae) is the important pathogen that causes otolaryngeal diseases such as sinusitis. S. pneumoniae frequently forms the biofilm to prevent severe circumstances such as antimicrobial agents. Shin'iseihaito (xinyiqingfeitang) is a formula of Japanese traditional Kampo medicine that has 9 crude drugs and provides the medicinal usage for sinusitis. The objective of the present study is to reveal the mechanism of antibiofilm activity by Shin'iseihaito extract (SSHT). SSHT significantly inhibited the formation of biofilm from S. pneumoniae ATCC 49619 in dose- and time-dependent manners. SSHT also significantly suppressed the biofilm formation by other five different cps types of S. pneumoniae clinical isolates. We found that the extracts of 8 out of 9 components in Shin'iseihaito had the inhibitory effects of biofilm formation, and the extract of the root of Scutellaria baicalensis had the strongest effect among the ingredients of Shin'iseihaito. We found that the capsule of SSHT-treated S. pneumoniae was significantly thinner than that of the untreated group and that SSHT reduced the hydrophobicity of bacterial cell surface. Our results suggest that Shin'iseihaito may be a useful agent for the treatment of S. pneumoniae-induced sinusitis because of the inhibition of biofilm formation of S. pneumoniae.

    DOI: 10.1155/2017/4575709

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  57. Effect of Shin'iseihaito on murine allergic reaction induced by nasal sensitization

    Minami M., Konishi T., Jiang Z., Arai T., Makino T.

    Journal of Traditional and Complementary Medicine   Vol. 6 ( 3 ) page: 252 - 256   2016.7

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    Shin'iseihaito (Magnolia Flower Lung-Clearing Decoction; 辛夷清肺湯 xīn yí qīng fèi tāng), a formula of traditional Japanese kampo medicine (日本漢醫 rì běn hàn yī) and traditional Chinese medicine (TCM; 中醫 zhōng yī), has been used for the treatment of chronic sinusitis. The objective of this study was to evaluate the anti-allergic effect of shin'iseihaito on murine allergic reaction induced by nasal sensitization using ovalbumin (OVA) as an antigen. Extract of shin'iseihaito (SSHT) could reduce the eosinophil, serum IgE and interleukin (IL)-4 levels, while increased the interferon (IFN)-γ levels in allergic mouse. Furthermore, allergic-murine serum treated with SSHT could not activate passive cutaneous anaphylaxis (PCA) reaction in murine model. Thus, our study showed that SSHT may possess anti-allergic activity. We suggested that SSHT may contribute to inhibit the exacerbation of allergic reaction induced by nasal sensitization.

    DOI: 10.1016/j.jtcme.2015.06.001

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  58. Recurrent bacteremia with different strains of Streptococcus pyogenes in an immunocompromised child

    Hattori T., Minami M., Narita K., Nakata T., Itomi S., Kubota K., Oya T., Nishiyama H., Kato H., Yuasa N.

    Journal of Infection and Chemotherapy   Vol. 22 ( 6 ) page: 421 - 423   2016.6

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    We report an immunocompromised child who experienced two episodes of bacteremia due to Streptococcus pyogenes. Random amplification of polymorphic DNA profiles, emm genotypes, superantigen profiles, antimicrobial susceptibility, and resistance-related genes were investigated, and the results showed different profiles between the two isolates. This is the first report describing recurrent bacteremia caused by different strains of S. pyogenes.

    DOI: 10.1016/j.jiac.2015.12.014

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  59. Evaluation of the application and efficacy of spatial distribution map of 87Sr/86Sr ratio using stream sediment for provenance analysis

    Jomori Yuka, Minami Masayo, Sakurai Goto Akiko, Ohta Atsuyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 ) page: 182   2016

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    <p></p>

    DOI: 10.14862/geochemproc.63.0_182

    CiNii Research

  60. 炭化物の14C-前処理過程の化学的解明-和歌山県根来寺坊院跡から出土した炭化米の分析- Reviewed

    冨山 慎二, 南 雅代, 中村 俊夫

    考古学と自然科学   Vol. 72   page: 45 - 61   2016

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  61. 炭化物の信頼性ある14C年代測定.

    南 雅代

    新学術領域研究ニュースレター   Vol. 8   page: 7 - 10   2016

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  62. Examination of storage method of water sample for accurate carbon isotopic analysis: How do we decrease the influence on DIC isotope change by biogenic activity?

    Takahashi Hiroshi, Handa Hiroko, Minami Masayo, Kondo Miyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 ) page: 73   2016

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    <p></p>

    DOI: 10.14862/geochemproc.63.0_73

    CiNii Research

  63. 八日市地方遺跡出土遺物の炭素年代測定と安定同位体分析

    宮田 佳樹, 南 雅代, 中村 俊夫

    八日市地方遺跡報告書Ⅲ   Vol. Ⅲ   2016

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  64. 奈良県三郷町持聖院所蔵蔵骨器内骨片の化学分析結果

    椋本 ひかり, 南 雅代

    奈良県三郷町持聖院所蔵伝解脱上人貞慶五輪塔及び五輪塔地下出土蔵骨器調査報告書   Vol. -   page: 10 - 15   2016

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  65. Radiocarbon Dating of Charcoal Remains (Operation E) International coauthorship

    南 雅代

    al-Rafidan   Vol. XXXVII   page: 136 - 140   2016

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  66. Antibacterial activity of Shin'iseihaito (Xin Yi Qing Fei Tang) against streptococcus pneumoniae

    Konishi T., Minami M., Jiang Z., Arai T., Makino T.

    Pharmacognosy Journal   Vol. 8 ( 1 ) page: 20 - 23   2016

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    Objective: Shin'iseihaito (Xin yi qing fei tang in Chinese, SSHT), a formula in traditional Japanese Kampo medicine and Chinese medicine comprising nine crude drugs, Gypsum, Ophiopogon Tuber, Scutellaria Root (SR, root of Scutellaria baicalensis), Gardenia Fruit, Anemarrhena Rhizome, Lilium Bulb, Magnolia Flower, Loquat Leaf, and Cimicifuga Rhizome, is commonly used to treat sinusitis associated with purulent nasal discharge and reddish nasal mucosa. We evaluated anti-bacterial activity of SSHT extract on Streptococcus pneumoniae, the major cause of bacterial sinusitis. Materials and Methods: Sterile paper disks impregnated with SSHT extract or each extract of its component were placed on sheep blood agar plates inoculated with Streptococcus pneumoniae (ATCC 49619). The diameter of inhibitory zone was measured after 20-24 h incubation. Results: SSHT extract and each water extract of Ophiopogon Tuber, SR, Gardenia Fruit, Anemarrhena Rhizome, Lilium Bulb, Magnolia Flower, and Cimicifuga Rhizome showed significant antibacterial activity against Streptococcus pneumoniae, and SR extract exhibited the largest inhibitory zone. SR extract was partitioned into AcOEt, BuOH, and water layer, and water layer was further separated into 80% EtOH soluble and insoluble fraction. Among them, only 80% EtOH soluble fraction was exhibited antibacterial activity. In this fraction, we found baicalin as the major compounds, and baicalin exhibited antibacterial activity against Streptococcus pneumoniae in concentrationdependent manner. Conclusion: SSHT has antibacterial activity against Streptococcus pneumoniae, and SR and its major constituent baicalin contribute to the antibacterial activity of SSHT against Streptococcus pneumoniae.

    DOI: 10.5530/pj.2016.1.4

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  67. 近年の14C AMS進歩の概要

    南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. 26   page: 55 - 60   2015

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  68. Radiocarbon analysis of water samples by the precipitation method

    Minami Masayo, A. Takahashi Hiroshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 62 ( 0 ) page: 293   2015

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    DOI: 10.14862/geochemproc.62.0_293

    CiNii Research

  69. 貞慶の火葬遺骨を用いた14C年代測定の試み

    南 雅代, 中村 俊夫

    第17回AMSシンポジウム報告集   Vol. 17   page: 134 - 136   2015

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  70. 水試料の化学処理法による14C比較プログラム (RICE-W) -経過報告-

    高橋 浩, 南 雅代, 荒巻 能史, 中村 俊夫

    第17回AMSシンポジウム報告集   Vol. 1   page: 56 - 59   2015

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  71. Effect of shin'iseihaito on lung colonization of pneumococcus in murine model

    Minami M., Konishi T., Jiang Z., Arai T., Makino T.

    African Journal of Traditional, Complementary and Alternative Medicines   Vol. 12 ( 6 ) page: 131 - 139   2015

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    Background: Streptococcus pneumoniae (pneumococcus) causes various serious diseases including sinusitis, pneumonia, and meningitis. One serious problem observed recently with pneumococcal therapy is attenuation of the antibiotic effect because of the emergence of antibiotic-resistant pneumococcus. Shin’iseihaito, a traditional Japanese medicine based on ancient Chinese medicine, has been used for treatment of otolaryngeal diseases in Japan. The objective of this study was to examine the anti-infectious effects of shin’iseihaito and its related mechanism. Materials and Methods: We evaluated the beneficial effect of shin’iseihaito extract (SSHT) against pneumococcus-infected murine model. The colonization of bacteria, blood and bronchoalveolar lavage (BAL) killing activity, the levels of inflammatory cytokine and IgA were investigated. Results: The pneumococcus from blood was not found in both SSHT-treated mice and untreated mice. However, the pneumococcal colonization of lung was significantly (p<0.05) lower after SSHT administration compared with untreated mice. Blood bactericidal assay showed that no significant difference (p=0.07) was observed in the anti-bacterial effect between SSHT-treated mice and untreated mice. However, BAL bactericidal assay showed that the survival rate of pneumococcus using the BAL from SSHT-treated mice was significantly (p<0.05) lower than that using the BAL from untreated mice. We also found increased levels of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IgA in pneumococcus-infected mice treated with SSHT. Conclusions: SSHT decreased the colonization rate after pneumococcal infection and up-regulated BAL bactericidal activity through modulation of inflammatory cytokines and IgA. Our data also suggest SSHT may be useful for the treatment of pneumococcal infection.

    DOI: 10.4314/ajtcam.v12i6.13

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  72. Open-label study to evaluate the pharmacodynamics, clinical efficacy, and safety of meropenem for adult bacterial meningitis in Japan

    Morita A., Kamei S., Minami M., Yoshida K., Kawabata S., Kuroda H., Suzuki Y., Araki N., Iwasaki Y., Kobayashi R., Hayashi N., Hirayama T., Ochiai J., Ueda M., Yamagishi Y., Niwa J.I., Shindo K., Fukushima Y., Takita T., Sato T., Sato S., Mikamo H., Iwata S.

    Journal of Infection and Chemotherapy   Vol. 20 ( 9 ) page: 535 - 540   2014.9

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    The aim of this study was to assess the efficacy, safety, and concentration of meropenem in cerebrospinal fluid when meropenem (2 g every 8 h) was administered to Japanese adult patients with bacterial meningitis. Five Japanese patients (mean age 60.6 years [range 35-71]) were enrolled. Infection with Streptococcus pneumoniae (three patients), Streptococcus salivarius (one patient), and Staphylococcus aureus (one patient) was confirmed by cerebrospinal fluid culture. Meropenem (2 g every 8 h) was administered to all five patients. Treatment duration ranged from 14 to 28 days (mean 22.6 days). All the patients were successfully treated. The concentration of meropenem in cerebrospinal fluid ranged from 0.27 to 6.40 μg/ml up to 8.47 h and was over 1 μg/ml 3 h after starting meropenem infusion. In each patient, the present study confirmed for the first time that the concentration of meropenem in cerebrospinal fluid exceeded the minimal inhibitory concentration for these pathogens. Eleven clinical and laboratory adverse events considered to be related to meropenem were observed in all patients, but no serious adverse event and no discontinuance of treatment due to adverse events occurred. Thus meropenem appeared to be a well-tolerated and effective agent for Japanese adult patients with bacterial meningitis. 2 g every 8 h of meropenem was delivered to CSF and its concentration was exceed in MICs for the detected pathogens. © 2014, Japanese Society of Chemotherapy and The Japanese Association for Infectious Diseases. Published by Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.jiac.2014.04.013

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  73. New susceptibility and resistance HLA-DP alleles to HBV-related diseases identified by a trans-ethnic association study in Asia

    Nishida N., Sawai H., Kashiwase K., Minami M., Sugiyama M., Seto W.K., Yuen M.F., Posuwan N., Poovorawan Y., Ahn S.H., Han K.H., Matsuura K., Tanaka Y., Kurosaki M., Asahina Y., Izumi N., Kang J.H., Hige S., Yamamoto T.I.K., Sakaida I., Murawaki Y., Itoh Y., Tamori A., Orito E., Hiasa Y., Honda M., Kaneko S., Mita E., Suzuki K., Hino K., Tanaka E., Mochida S., Watanabe M., Eguchi Y., Masaki N., Murata K., Korenaga M., Mawatari Y., Ohashi J., Kawashima M., Tokunaga K., Mizokami M.

    PLoS ONE   Vol. 9 ( 2 )   2014.2

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    Previous studies have revealed the association between SNPs located on human leukocyte antigen (HLA) class II genes, including HLA-DP and HLA-DQ, and chronic hepatitis B virus (HBV) infection, mainly in Asian populations. HLA-DP alleles or haplotypes associated with chronic HBV infection or disease progression have not been fully identified in Asian populations. We performed trans-ethnic association analyses of HLA-DPA1, HLA-DPB1 alleles and haplotypes with hepatitis B virus infection and disease progression among Asian populations comprising Japanese, Korean, Hong Kong, and Thai subjects. To assess the association between HLA-DP and chronic HBV infection and disease progression, we conducted high-resolution (4-digit) HLA-DPA1 and HLA-DPB1 genotyping in a total of 3,167 samples, including HBV patients, HBV-resolved individuals and healthy controls. Trans-ethnic association analyses among Asian populations identified a new risk allele HLA-DPB1*09:01 (P = 1.36x10-6; OR = 1.97; 95% CI, 1.50-2.59) and a new protective allele DPB1*02:01 (P = 5.22x10 -6; OR = 0.68; 95% CI, 0.58-0.81) to chronic HBV infection, in addition to the previously reported alleles. Moreover, DPB1*02:01 was also associated with a decreased risk of disease progression in chronic HBV patients among Asian populations (P = 1.55x10-7; OR = 0.50; 95% CI, 0.39-0.65). Trans-ethnic association analyses identified Asian-specific associations of HLA-DP alleles and haplotypes with HBV infection or disease progression. The present findings will serve as a base for future functional studies of HLA-DP molecules in order to understand the pathogenesis of HBV infection and the development of hepatocellular carcinoma. © 2014 Nishida et al.

    DOI: 10.1371/journal.pone.0086449

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  74. Nationwide post event survey and analysis of the 2011 Tohoku earthquake tsunami

    Mori N., Takahashi T., Hamaura S.E., Miyakawa K., Tanabe K., Tanaka K., Tanaka M., Watanabe T., Matsutomi H., Naoe K., Noumi T., Yamaguchi E., Ando S., Fujii Y., Kashima T., Okuda Y., Shibazaki B., Sakakiyama T., Matsuyama M., Yoshii T., Goto K., Aida T., Kurata Y., Miyazaki M., Shutou K., Suzuki J., Takeuchi H., Nakamura T., Fujiwara O., Kagohara K., Kimura H., Komatsubara J., Miyashita Y., Namegaya Y., Sawai Y., Shishikura M., Tanigawa K., Fritz H., Uzaki K.I., Sasaki M., Minami M., Endou H., Hashimoto M., Kobashigawa Y., Kumagai M., Ietsune M., Nakamura K., Gusman A., Hirakawa K., Loki K., Nakamura Y., Nakayama T., Nishimura Y., Putra P., Saruwatari A., Watanabe Y., Yamada T., Nabetani Y., Nobuoka H., Tamada T., Matsubayashi Y., Ogasawara T., Sakai S., Abe M., Hayashi Y., Iino H., Iwakiri K., Kimura K., Maeda K., Okada M., Tsushima H., Kakinuma T., Yamashita K., Umeda S., Nakamura T., Seto S., Takahiro K., Torayashiki T., Tsujimoto G., Uno K., Yoshioka S., Dewa N., Hayashi T., Kitamura M., Kuroda S., Nakahira A., Nozawa T., Taniwaki K., Ohtoshi K., Aoyama T., Chiba T., Enomoto H., Hirahara K., Murai S., Narayama H., Yamanaka S., Yamazaki H., Yoshiiri S., Azuma R., Baba Y.

    Coastal Engineering Journal   Vol. 54 ( 1 )   2014.1

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    At 14:46 local time on March 11, 2011, a magnitude 9.0 earthquake occurred off the coast of northeast Japan. This earthquake generated a tsunami that struck Japan as well as various locations around the Pacific Ocean. With the participation of about 300 researchers from throughout Japan, joint research groups conducted a tsunami survey along a 2,000 km stretch of the Japanese coast. More than 5,200 locations have been surveyed to date, generating the largest tsunami survey dataset in the world. The inundation height and run-up height were surveyed by laser, GPS, and other instruments, and the tidal correction has been accurately adjusted using a tidal database and a numerical simulation for Tohoku, an area where tide gauges were destroyed by the tsunami. Based on the survey dataset, the regional and local scale analyses were conducted to understand the basic characteristics of this event. Maximum run-up heights greater than 10 m are distributed along 500 km of coast in direct distance. The affected area of this event was several times larger than historically recorded in Tohoku. The mean inundation height in the southern Sanriku region is 1015 m and there are several peaks of inundation along the coast from the northern to middle part of Sanriku. © 2012 World Scientific Publishing Company and Japan Society of Civil Engineers.

    DOI: 10.1142/S0578563412500015

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  75. 水試料の14C・δ13C分析のための前処理法の比較検討

    南 雅代, 高橋 浩, 荒巻 能史, 中村 俊夫

    第16回AMSシンポジウム報告集   Vol. -   page: 56 - 60   2014

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  76. 名古屋大学タンデトロンAMSシステムの現状(2013年度)

    中村 俊夫, 南 雅代

    第16回AMS シンポジウム報告書   Vol. 16   page: 27 - 32   2014

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  77. Tele-auscultation support system with mixed reality navigation

    Hori K., Uchida Y., Kan T., Minami M., Naito C., Kuroda T., Takahashi H., Ando M., Kawamura T., Kume N., Okamoto K., Takemura T., Yoshihara H.

    Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS     page: 4646 - 4649   2013.10

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    The aim of this research is to develop an information support system for tele-auscultation. In auscultation, a doctor requires to understand condition of applying a stethoscope, in addition to auscultatory sounds. The proposed system includes intuitive navigation system of stethoscope operation, in addition to conventional audio streaming system of auscultatory sounds and conventional video conferencing system for telecommunication. Mixed reality technology is applied for intuitive navigation of the stethoscope. Information, such as position, contact condition and breath, is overlaid on a view of the patient's chest. The contact condition of the stethoscope is measured by e-textile contact sensors. The breath is measured by a band type breath sensor. In a simulated tele-auscultation experiment, the stethoscope with the contact sensors and the breath sensor were evaluated. The results show that the presentation of the contact condition was not understandable enough for navigating the stethoscope handling. The time series of the breath phases was usable for the remote doctor to understand the breath condition of the patient. © 2013 IEEE.

    DOI: 10.1109/EMBC.2013.6610583

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  78. Ultrafiltration pretreatment for <sup>14</sup>C dating of fossil bones from archaeological sites in Japan

    Minami M., Sakata K., Takigami M., Nagaoka T., Nakamura T.

    Radiocarbon   Vol. 55 ( 2-3 ) page: 481 - 490   2013.9

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    To study the effect of ultrafiltration on the radiocarbon ages of relatively poorly preserved bones in Japan, we analyzed the 14C dates of high-molecular-weight (HMW) gelatin samples and compared them with those of other extracted organic fractions, unfiltered gelatin samples extracted from NaOH-treated or NaOH-untreated collagen, and XAD-purified hydrolysates of animal fossil bones (~4600 BP; gelatin yield of 2-4%) from the Awazu underwater archaeological site, Shiga, Japan. NaOH-treated, unfiltered gelatins and XAD-purified hydrolysates showed statistically similar 14C ages to those of HMW gelatins. The 14C ages of the HMW gelatins were the oldest and similar to those of wood collected from the same layer as the bones, and the NaOH-treated, unfiltered gelatins gave 14C ages within the acceptable margins of error; therefore, ultrafiltration was effective for accurate 14C dating, while NaOH-treated gelatin without ultrafiltration was also sufficient to obtain accurate 14C dates on the animal bones. The 14C ages of human skeletons (~750 BP; gelatin yield of 2-11%) from 5 individuals excavated from an archaeological site in Yuigahama, Kamakura, Japan, showed statistically the same 14C ages as NaOHtreated, unfiltered gelatins and HMW gelatins within the margins of error, although HMW gelatins were likely to give slightly older ages than unfiltered gelatin with a yield of less than ~3%. These results indicate that unfiltered gelatins extracted from fossil bones of gelatin yield more than ~3% can produce accurate 14C ages without the need for ultrafiltration. Ten bone fragments from 3 humans showed the same 14C ages for each individual, suggesting that any bone part from an individual can be used to obtain a representative age. The 14C ages of tooth enamels of 2 individuals were 35 and 70 yr older than their bone ages. Death dates obtained from these age gaps agreed with those determined by morphology. © 2013 by the Arizona Board of Regents on behalf of the University of Arizona.

    DOI: 10.2458/azu_js_rc.55.16334

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  79. 骨試料の年代測定

    南 雅代

    フィッション・トラックニュースレター   Vol. 26   page: 76 - 79   2013

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  80. エル・サルバドル共和国から出土した先スペイン期埋葬人骨の同位体分析 Reviewed

    南 雅代

    考古学と自然科学   Vol. 64   page: 1 - 25   2013

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  81. アミノ酸ラセミ化法を用いた骨遺物の年代決定

    南 雅代

    新学術領域研究ニュースレター   Vol. 2   page: 3 - 4   2013

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  82. Tele-Auscultation Support System with Mixed Reality Navigation

    Hori Kenta, Uchida Yusuke, Kan Tsukasa, Minami Maya, Naito Chisako, Kuroda Tomohiro, Takahashi Hideya, Ando Masahiko, Kawamura Takashi, Kume Naoto, Okamoto Kazuya, Takemura Tadamasa, Yoshihara Hiroyuki

    2013 35TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC)     page: 4646 - 4649   2013

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    Web of Science

  83. Constraint on radiocarbon age correction in Lake Biwa environment from the middle to late Holocene Reviewed

    宮田 佳樹, 南 雅代

    Nucl. Instrum. Methods   Vol. B294   page: 452 - 458   2013

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  84. Less impact of limestone bedrock on elemental concentrations in stream sediments ーCase study of Akiyoshi areaー Reviewed

    南 雅代

    Bulletin of the Geological Survey of Japan   Vol. 64   page: 121 - 138   2013

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  85. Small-mass AMS radiocarbon analysis at Nagoya University Reviewed

    南 雅代, 宮田 佳樹, 中村 俊夫

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B294   page: 91 - 96   2013

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  86. Small-mass AMS radiocarbon analysis at NagoyaUniversity Reviewed

    南 雅代, 宮田 佳樹

    Nucl. Instrum. Methods   Vol. B294   page: 91 - 96   2013

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  87. Spatial distribution of strontium isotope ratios (87Sr/86Sr) in Shikoku Island and the Kii Peninsula, southwest Japan Reviewed

    南 雅代, 太田 充恒

    Geochemical Journal   Vol. 47   page: 321 - 335   2013

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  88. Limnological features of glacier-fed rivers in the Southern Tibetan Plateau, China

    Murakami T., Hayashi Y., Minami M., Wang J., Torii T., Fujitani T., Yoshinari G., Zhu L., Nishimura M.

    Limnology   Vol. 13 ( 3 ) page: 301 - 307   2012.12

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    Language:Japanese   Publisher:Limnology  

    We describe the limnological features of six glacier-fed rivers located at an altitude of over 4,000 m in Southern Tibetan Plateau, China, based on diurnal observations of the water environment and biota in the summer of 2010. The rivers showed significant diurnal changes in water level, temperature, and turbidity; clear and cool streams in the morning changed to cloudy rapid flow in the afternoon, and water temperature was elevated under strong light conditions where riparian forest did not cover the surface of the water. On the other hand, the pH and dissolved oxygen saturation did not show any diurnal fluctuations, which indicates low periphytic algal productivity. The aquatic insect communities were poor both in diversity and density, and the dominant life forms (from a functional feeding group perspective) were collectors, which depend on allochthonous organic matter; scrapers, which depend on autochthonous algal production, were scarce. We therefore suggest that diurnal or seasonal high waters transport products from marginal pools along dried riverbeds or from ponds on flood plains, and may serve as the source of organic matter in glacier-fed rivers. © 2012 The Japanese Society of Limnology.

    DOI: 10.1007/s10201-012-0378-4

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  89. Analysis of the pathological lesions of the lung in a mouse model of cutaneous infection with Streptococcus pyogenes

    Minami M., Sobue S., Ichihara M., Hasegawa T.

    Pathology International   Vol. 62 ( 2 ) page: 99 - 104   2012.2

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    Invasive diseases such as toxic shock syndrome caused by Streptococcus pyogenes (S. pyogenes) are re-emerging infectious diseases. The mechanism of pathogenesis is not completely understood although the virulence of this organism has been analyzed using animal model systems, particularly using mice. The analysis of the progression of infection, however, is difficult. Computed tomography (CT) scanning is an extremely powerful technique that we applied to the mouse model of cutaneous infection with S. pyogenes. Two or three days after subcutaneous administration of bacteria, high density reticular areas were detected in the lung by CT. Histopathological examination of the lung was performed to examine the results of CT. Increased numbers of cytokeratin-positive epithelial cells, probably alveolar type II epithelial cells, were detected but no remarkable increase of inflammatory cell infiltrates was observed. Our results show that the pathological lesions of the lung in this model, wherein relatively few numbers of neutrophils were in the alveoli, are well correlated with the lung of a part of streptococcal toxic shock syndrome patients. Therefore, CT may be useful in assessing the progression of S. pyogenes infection, particularly in the pathological lesions of the lung in this model. © 2011 The Authors. Pathology International © 2011 Japanese Society of Pathology and Blackwell Publishing Asia Pty Ltd.

    DOI: 10.1111/j.1440-1827.2011.02756.x

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  90. <sup>14</sup>C dating human skeletons from medieval archaelogical sites in Kamakura, Japan: Were they victims of Nitta Yoshisada's attack?

    Minami M, Nakamural T, Nagaoka T, Hirata K

    Radiocarbon   Vol. 54 ( 3-4 ) page: 599 - 613   2012

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    We investigated the radiocarbon ages and carbon and nitrogen isotope ratios of human skeletal remains from burials at the Yuigahama-minami and Chusei-Shudan-Bochi sites in the Yuigahama area (Kamakura, Japan), which we believe are associated with the great attack on Kamakura by Nitta Yoshisada in AD 1333. The human bones produced enriched δ13C and δ15N values that could be affected by consumption of protein from marine fish and/or mammals with high δ13C and δ15N, and therefore older apparent 14C ages. We thus estimated the marine reservoir effect on human skeletons to determine their true ages. The IsoSource isotope mixing model was employed for reconstructing percentages of marine protein in the human diet, and calibrated calendar dates for the 14C ages were calculated using the marine percentages. At the Yuigahama-minami site, most skeletons from individual burials now date to the last phase of the Kamakura period or the early part of the Muromachi period, while skeletons from mixed human-animal multiple burials date to the latter part of the Kamakura period. The humans from the individual burials, consisting of normal ratios of adult males, could have died a natural death, though the site could also have been used to inter victims of the battle of 1333. The humans from mixed human-animal burials, consisting of a high proportion of infants, were not victims of the 1333 battle, but the site may have been used to inter victims of the Kamakura earthquake in 1293, which resulted in a catastrophic tsunami. On the other hand, the skeletons from multiple burials in the Chusei-Shudan-Bochi site all date to the middle Kamakura period. Coupled with the fact that most humans in the site are male but show no evidence of injuries by sword cuts, it is likely that burials of the Chusei-Shudan-Bochi site could have been a collective interment following the Jinji earthquake in 1241, the Shoka earthquake in 1257, or the Shoka famine in 1258 in the middle Kamakura period. The results of this study indicate that humans from burials in the Yuigahama region were not necessarily victims of the attack by Nitta Yoshisada on Kamakura, but instead were likely victims of natural disasters such as large earthquakes and severe famines, which often occurred in the middle Kamakura period. © 2012 by the Arizona Board of Regents on behalf of the University of Arizona.

    DOI: 10.1017/s0033822200047287

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  91. 里山からキツネが消えた日-一匹のキツネのC・N・Sr同位体比測定 Reviewed

    南 雅代

    海洋化学研究   Vol. 24   page: 64 - 72   2012

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  92. 同一古人骨の部位によるアミノ酸組成ならびに14C年代の比較

    坂田 健, 南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 86 - 96   2012

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  93. ストロンチウム同位体比を用いた過去の人類の移動の解明

    南 雅代

    化学と教育   Vol. 60   page: 472 - 473   2012

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  94. 北海道利尻島の泥炭地に飛来する鉛の供給源の変遷

    谷水 雅治, 淺原 良浩, 南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 138 - 148   2012

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  95. 北海道利尻島の泥炭地に飛来する鉛の供給源の変遷

    谷水 雅治, 淺原 良浩, 南 雅代

    名古屋大学加速器質量分析計業績報告書(XXIII)-名古屋大学年代測定総合研究センター   Vol. 23   page: 138 - 148   2012

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  96. Radiocarbon dating of VIRI bone samples using ultrafiltration Reviewed

    南 雅代

    Nucl. Instr. and Meth. in Phys. Res.   Vol. -   2012

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  97. Radiocarbon dating of human skeletons of medieval archaelogical sites in Kamakura, Japan: were they killed by Nitta Yoshisada's attack on Kamakura in AD 1333? Reviewed

    南 雅代

    Radiocarbon   Vol. 54   page: 599 - 613   2012

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  98. A first step toward small-mass AMS radiocarbon analysis at Nagoya University Reviewed

    南 雅代

    Nucl. Instr. and Meth. in Phys. Res.   Vol. -   2012

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  99. 14C年代測定のための骨試料調製法

    南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 185 - 189   2012

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  100. 14C年代測定のための骨試料調製法

    南 雅代

    名古屋大学加速器質量分析計業績報告書     page: 185 - 189   2012

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  101. Treatment with the PI3K/mTOR Inhibitor, NVP-BEZ235, Overcomes Resistance to Imatinib in Quiescent or T315I-Mutated Ph+ Leukemia Cells

    Minami Yosuke, Minami Miho, Fukushima Nobuaki, Kuwatsuka Yachiyo, Naoe Tomoki

    BLOOD   Vol. 118 ( 21 ) page: 1488 - 1489   2011.11

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  102. Retention of Slow-Cycling CD34(+) cells During Imatinib Treatment and Rapid Decline After 2nd ABL-TKI Treatment in Ph+ Leukemia Cells

    Minami Yosuke, Abe Akihiro, Minami Miho, Kuwatsuka Yachiyo, Fukushima Nobuaki, Kitamura Kunio, Hiraga Junji, Yamamoto Kazuhito, Jamieson Catriona, Naoe Tomoki

    BLOOD   Vol. 118 ( 21 ) page: 293 - 294   2011.11

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  103. Analysis of two-component sensor proteins involved in the response to acid stimuli in Streptococcus pyogenes

    Ichikawa M., Minami M., Isaka M., Tatsuno I., Hasegawa T.

    Microbiology   Vol. 157 ( 11 ) page: 3187 - 3194   2011.11

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    The virulence of Streptococcus pyogenes depends on proteins that are produced by this bacterium. The production of virulence proteins depends on environmental factors, and two-component regulatory systems are considered to be involved in sensing these factors. One of the environmental factors is acid stimuli. We established knockout strains in all speculated two-component regulatory sensor proteins of the M1 clinical strain of S. pyogenes and examined their relevance to acid stimuli. The parental strain and its derived knockout strains were cultured in a medium adjusted to pH 7.6 or 6.0, and their growth in broth was compared. The spy1622 sensor knockout strain showed significant growth reduction compared with the parental strain in broth at pH 6.0, suggesting that the Spy1622 two-component sensor protein is involved in sensing acid stimuli. To further examine the role of the Spy1622 two-component sensor protein in virulence, blood bactericidal assays and mouse infection model experiments were performed. We found that the spy1622 knockout strain was less virulent than the parental strain, which suggests that the Spy1622 two-component sensor protein could play an important role in virulence. © 2011 SGM.

    DOI: 10.1099/mic.0.050534-0

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  104. Protective effect of hainosankyuto, a traditional japanese medicine, on streptococcus pyogenes infection in murine model

    Minami M., Ichikawa M., Hata N., Hasegawa T.

    PLoS ONE   Vol. 6 ( 7 )   2011.7

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    Background: Streptococcus pyogenes (S. pyogenes) causes various serious diseases including necrotizing fasciitis and streptococcal toxic shock syndrome. One serious problem observed recently with S. pyogenes therapy is attenuation of the antibiotic effect, especially penicillin treatment failure and macrolide resistance. Hainosankyuto, a traditional Japanese medicine based on ancient Chinese medicine, has been used for treatment of infectious purulent diseases in Japan. In this study, we investigated the protective and therapeutic efficacy of Hainosankyuto against S. pyogenes-skin infection. Methodology/Principal Findings: A broth microdilution method revealed that Hainosankyuto did not show a direct anti-bacterial effect against S. pyogenes. Force-feeding Hainosankyuto to infected mice for 4 consecutive days increased the survival rate and reduced the size of local skin lesions compared with mice fed PBS. Although we did not find the significant recovery of survival rate in Hainosankyuto administration only after S. pyogenes infection, the sizes of ulcer lesion were significant smaller after Hainosankyuto administration compared with mice fed PBS. No difference was observed in the anti-bacterial effect of Hainosankyuto between macrolide-susceptible and -resistant strains. Blood bactericidal assay showed that the survival rate of S. pyogenes using the blood from Hainosankyuto -treated mice was lower than that using the blood from untreated mice. We also found increased levels of IL-12, IFN-γ and a decreased level of TNF-α in the serum of S. pyogenes-infected mice treated with Hainosankyuto. Mouse peritoneal macrophage from Hainosankyuto-treated mice had significant phagocytic activity and increased mRNA levels of IL-12, IFN-γ and decreased mRNA level of TNF-α compared with control macrophage. Conclusions/Significance: Hainosankyuto increased survival rate after S. pyogenes infection and up-regulated both blood bactericidal activity and macrophage phagocytic activity through modulation of inflammatory cytokines. Our data also suggest Hainosankyuto may be useful for the treatment of S. pyogenes infection more prophylactically than therapeutically. © 2011 Minami et al.

    DOI: 10.1371/journal.pone.0022188

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  105. Two-dimensional gel electrophoresis analysis of exoprotein from Streptococcus dysgalactiae subsp equisimilis

    Minami M., Kuriyama M., Okamoto A., Ohta M., Hasegawa T.

    INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES   Vol. 15   page: S19 - S20   2011.7

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  106. [Antimicrobial susceptibility and serotype distribution in perinatal group B Streptococcus isolates--a 1999-2009 multicenter study].

    Wakimoto H., Wakimoto Y., Yano H., Matsubara K., Miyakawa S., Yoshida A., Okuzumi K., Sato H., Sawada K., Yamada Y., Futamura M., Kitagawa M., Sato T., Minami M., Hasegawa T.

    Kansenshōgaku zasshi. The Journal of the Japanese Association for Infectious Diseases   Vol. 85 ( 2 ) page: 155 - 160   2011.3

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    We determined temporary changes in group B Streptococcus antimicrobial susceptibility and serotype distribution from perinatal strains. We examined invasive microbiological isolates from neonates with early-onset group B streptococcal disease (n = 14), and colonized isolates from those born uneventfully (n = 55) and from the genital tracts of pregnant and puerperal women (n = 198), collected between 1999 and 2009. All isolates were susceptible to penicillin. No significant differences were seen in susceptibility of 12 antimicrobial agents examined between invasive and colonized isolates. MIC50, MIC90, and resistance did not differ between stage I (1999-2005) and II (2006-2009) isolates. Serotype distribution significantly differed, however, serotypes III and Ia predominated among invasive isolates, while serotypes Ib and VI were common among their colonized counterparts. These findings suggest that to date, penicillin remains effective in intrapartum prophylactic use in colonized pregnant women.

    DOI: 10.11150/kansenshogakuzasshi.85.155

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  107. 同位体分析による実構造物中のコンクリートの中性化進行評価の試み Reviewed

    淺原 良浩, 南 雅代, 吉田 英一

    セメントコンクリート論文集   Vol. 64(印刷中)   2011

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  108. The radiocarbon age differences caused by shell species, tissues or collected locations and their influence for radiocarbon dating of archaeological samples in Lake Biwa, Japan

    南 雅代

    The 4^<th> East Asia accelerator Mass Spectrometry symposium(EA-AMS4)     page: 137 - 144   2011

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  109. Radiocarbon dating of carbonized material adhering to pottery-The difference of Carbon-14 age between inner and outer surface of the pottery in wetland archaeological site Reviewed

    南 雅代

    Proceedings of the Japan Academy Ser B   Vol. 87   page: 518 - 528   2011

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  110. Radiocarbon dating of carbonized material adhering to pottery-The difference of Carbon-l4 age between inner and outer surface of the pottery in wetland archaeological site Reviewed

    南 雅代

    Proceedings of the Japan Academy Ser B   Vol. 87巻   page: 518 - 528   2011

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  111. Afirst step toward small-massAMS radiocarbon analysis at Nagoya University

    南 雅代

    第12回AMSシンポジウム報告書   Vol. 12   page: 57 - 60   2011

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  112. A first step toward small-mass AMS radiocarbon analysis at Nagoya University.

    南 雅代

    第12回AMSシンポジウム報告書   Vol. 12   page: 57 - 60   2011

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  113. Treatment with mTOR Inhibitor, Everolimus (RAD001) Overcomes Resistance to Imatinib In Ph-Leukemia Quiescent Cells

    Kuwatsuka Yachiyo, Minami Yosuke, Minami Miho, Tanizaki Ryohei, Kiyoi Hitoshi, Naoe Tomoki

    BLOOD   Vol. 116 ( 21 ) page: 667 - 668   2010.11

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  114. Biomarkers In Cell Death of Imatinib-Resistant Ph-Leukemia Cells During Treatment with mTOR Inhibitor, Everolimus.

    Minami Miho, Minami Yosuke, Kuwatsuka Yachiyo, Kiyoi Hitoshi, Naoe Tomoki

    BLOOD   Vol. 116 ( 21 ) page: 1625 - 1625   2010.11

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  115. TREATMENT WITH EVEROLIMUS OVERCOMES RESISTANCE TO IMATINIB IN PH-LEUKEMIA QUIESCENT OR T315I-MUTATED CELLS

    Minami Yosuke, Minami Miho, Kuwatsuka Yachiyo, Tanizaki Ryohei, Abe Akihiro, Kiyoi Hitoshi, Naoe Tomoki

    ANNALS OF ONCOLOGY   Vol. 21   page: 34 - 34   2010.11

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  116. A new <sup>14</sup>C data set of the PY608W-PC sediment core from lake pumoyum co (Southeastern Tibetan Plateau) over the last 19 KYR

    Watanabe T., Matsunaka T., Nakamura T., Nishimura M., Izutsu Y., Minami M., Nara F.W., Kakegawa T., Zhu L.

    Radiocarbon   Vol. 52 ( 3 ) page: 1435 - 1442   2010.8

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    A new continuous sediment core (PY608W-PC; 3.8 m length) for reconstruction of climatic and environmental changes in the southeastern Tibetan Plateau was taken from the eastern part of Lake Pumoyum Co in August 2006. Sediment layers of the lower part of PY608W-PC (380-300 cm depth) were composed mainly of relatively large plant residues (up to ~3 cm in length) with an admixture of fine sand and sandy silt. The large plant residues disappeared at ~300-290 cm depth in core PY608W-PC and were replaced by silt-silty clay. The large plant residues from the lower part of PY608W-PC could be aquatic, because the plant residues were extremely enriched in 13C (up to -3.0‰, -5.6 ± 2.3‰ on average). On the other hand, the plant residue concentrates (PRC fractions) from the upper part of the core (290-0 cm in depth) could be terrestrial C3 plants (δ13C = -21.8 ± 1.7‰ on average). Radiocarbon dating was performed on the large plant residues and PRC fractions from the PY608W-PC sediment core, which represented the chronology from ~19,000 cal BP to present. © 2010 by the Arizona Board of Regents on behalf of the University of Arizona.

    DOI: 10.1017/S0033822200046518

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  117. Characterization of streptococcus pyogenes isolated from balanoposthitis patients presumably transmitted by penile-oral sexual intercourse

    Minami M., Wakimoto Y., Matsumoto M., Matsui H., Kubota Y., Okada A., Isaka M., Tatsuno I., Tanaka Y., Hasegawa T.

    Current Microbiology   Vol. 61 ( 2 ) page: 101 - 105   2010.8

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    Streptococcus pyogenes is indigenous to the human pharynx and causes acute pharyngitis. Balanoposthitis is an inflammatory disease of the glans and the foreskin. However, balanoposthitis caused by S. pyogenes is not widely recognized as a sexually transmitted disease. In addition, bacteriological features of the isolates causing balanoposthitis are unclear. The four S. pyogenes strains isolated from adult balanoposthitis were examined. We performed emm typing, T antigen typing, RAPD assay, PCR assay for the streptococcal pyrogenic exotoxin-related genes and antibiotic-resistant genes, and antibiotic susceptibility assay. All four strains were suspected to be transmitted by penile-oral sexual intercourse, were found to be different by genetic analysis, and also harbored some antibiotic-resistant factors. We propose that S. pyogenes should be considered as a causative agent of sexually transmitted disease. The drug resistant S. pyogenes must be taken into account when balanoposthitis patients are treated with antibiotic. © 2010 Springer Science+Business Media, LLC.

    DOI: 10.1007/s00284-010-9581-x

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  118. Comparison of δ13C and 14C activities of CO2 samples combusted in closed-tube and elemental-analyzer systems.

    Minami, M, Goto, S. A, Omori, T, Ohta, T, Nakamura, T

    Nucl. Instr. and Meth. in Phys. Res.   Vol. 268 ( 7-8 ) page: 914 - 918   2010.4

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  119. Detection of invasive protein profile of Streptococcus pyogenes M1 isolates from pharyngitis patients

    Hasegawa T., Okamoto A., Kamimura T., Tatsuno I., Hashikawa S.N., Yabutani M., Matsumoto M., Yamada K., Isaka M., Minami M., Ohta M.

    APMIS   Vol. 118 ( 3 ) page: 167 - 178   2010.3

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    Streptococcal toxic shock syndrome (STSS) is a re-emerging infectious disease in Japan and many other developed countries. Epidemiological studies have revealed that the M1 serotype of Streptococcus pyogenes is the most dominant causative isolate of STSS. Recent characterization of M1 isolates revealed that the mutation of covS, one of the two-component regulatory systems, plays an important role in STSS by altering protein expression. We analyzed the M1 S. pyogenes clinical isolates before or after 1990 in Japan, using two-dimensional gel electrophoresis (2-DE) and pulsed-field gel electrophoresis (PFGE). PFGE profiles were different between the isolates before and after 1990. Markedly different profiles among isolates after 1990 from STSS and pharyngitis patients were detected. Sequence analysis of two-component regulatory systems showed that covS mutations were detected not only in STSS but also in three pharyngitis isolates, in which proteins from the culture supernatant displayed the invasive type. The mutated CovS detected in the pharyngitis isolates had impaired function on the production of streptococcal pyrogenic exotoxin B (SpeB) analyzed by 2-DE. These results suggest that several covS mutations that lead to the malfunction of the CovS protein occurred even in pharyngeal infection. © 2010 APMIS.

    DOI: 10.1111/j.1600-0463.2009.02574.x

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  120. 限外濾過調製法を用いた骨ゼラチンの14C年代測定.

    南 雅代

    名古屋大学加速器質量分析計業績報告書 XXI     page: 32 - 40   2010

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  121. エル・サルバドル共和国出土人骨のストロンチウム同位体比

    南 雅代

    古代メソアメリカの考古資料を用いた学術的発展研究(名古屋大学総長裁量経費報告書)   Vol. (予報)   page: 23 - 30   2010

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  122. Comparison ofδ13C and 14C activities of CO2 samples combusted in closed-tube and elemental-analyzer systems. Reviewed

    南 雅代

    Nucl. Instr. and Meth. in Phys. Res. B268     page: 914 - 918   2010

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  123. CHIME geochronology of granitic gneiss from Baekdong in the Hongseong area of the Gyeonggi Massif, South Korea. Reviewed

    南 雅代

    Journal of Earth and Planetary Sciences, Nagoya University   Vol. 57   page: 19 - 41   2010

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  124. A NEW C-14 DATA SET OF THE PY608W-PC SEDIMENT CORE FROM LAKE PUMOYUM CO (SOUTHEASTERN TIBETAN PLATEAU) OVER THE LAST 19 KYR

    Watanabe Takahiro, Matsunaka Tetsuya, Nakamura Toshio, Nishimura Mitsugu, Izutsu Yasuhiro, Minami Motoyasu, Nara Fumiko Watanabe, Kakegawa Takeshi, Zhu Liping

    RADIOCARBON   Vol. 52 ( 3 ) page: 1435 - 1442   2010

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  125. NADase as a target molecule of in vivo suppression of the toxicity in the invasive M-1 group A Streptococcal isolates.

    Tatsuno I., Isaka M., Minami M., Hasegawa T.

    BMC microbiology   Vol. 10   2010

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    BACKGROUND: NAD-glycohydrolase (NADase) secreted by M-1 group A streptococcal (GAS) isolates are suspected as one of the virulence factors to cause severe invasive disease including streptococcal toxic shock-like syndrome (STSS). M-1 GAS strains were divided into three groups based on NADase activity: high activity, low activity and no activity in our previous report. RESULTS: The representative high activity isolates taken from STSS patients showed higher virulence compared with isolates from the low activity group, when used to infect mice. The knockout mutant of the nga gene, which encodes NADase also showed reduced virulence in a mouse infection study. The cloned nga gene was able to significantly complement the lost virulence. In addition, the solution containing purified recombinant IFS, which is an inhibitor of NADase, partially rescued mice infected with S. pyogenes. CONCLUSIONS: These results indicate that NADase is important for the virulence of S. pyogenes in vivo and is the potential target to suppress the virulence.

    DOI: 10.1186/1471-2180-10-144

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  126. Treatment with mTOR Inhibitor, Everolimus (RAD001) Overcomes Resistance to Imatinib in Ph-Leukemia Quiescent or T315I-Mutated Cells

    Minami Yosuke, Minami Miho, Kuwatsuka Yachiyo, Tanizaki Ryohei, Nomura Yuka, Abe Akihiro, Kiyoi Hitoshi, Naoe Tomoki

    BLOOD   Vol. 114 ( 22 ) page: 1269 - 1269   2009.11

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  127. Treatment with Bortezomib Overcomes Resistance to Imatinib in Ph-Leukemia Quiescent Cells

    Kuwatsuka Yachiyo, Minami Yosuke, Tanizaki Ryohei, Minami Miho, Abe Akihiro, Nomura Yuka, Kiyoi Hitoshi, Naoe Tomoki

    BLOOD   Vol. 114 ( 22 ) page: 580 - 580   2009.11

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  128. The streptococcal inhibitor of complement (SIC) protects Streptococcus pyogenes from bacteriocin-like inhibitory substance (BLIS) from Streptococcus salivarius: Research letter

    Minami M., Ohmori D., Tatsuno I., Isaka M., Kawamura Y., Ohta M., Hasegawa T.

    FEMS Microbiology Letters   Vol. 298 ( 1 ) page: 67 - 73   2009.9

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    Streptococcus salivarius inhibits the growth of Streptococcus pyogenes in vitro. Streptococcus pyogenes has various virulence factors, including the streptococcus inhibitor of complement (SIC). Although SIC inhibits the activity of the peptides LL-37 and NAP1, the relationship between SIC and the bacteriocin-like inhibitory substance (BLIS) has not been elucidated. Here, we evaluated whether S. salivarius BLIS affects S. pyogenes SIC. We created three Δsic mutant strains from three S. pyogenes strains and performed deferred antagonism assays. The test strains were BLIS-positive S. salivarius JCM5707 and BLIS-negative S. salivarius NCU12. Deferred antagonism assays with JCM5707 showed that the inhibitory zones in the three Δsic mutant strains were wider than those in the three wild-type strains. Streptococcus pyogenes was cultured in BLIS-containing broth and the change in SIC in the supernatant was assessed by two-dimensional gel electrophoresis (2-DE). The 2-DE analysis of S. pyogenes exoproteins with the JCM5707 supernatant showed reduced SIC compared with those without the JCM5707 supernatant. Changes in sic mRNA levels affected by S. salivarius BLIS were evaluated by a reverse transcriptase-PCR. The sic mRNA level was affected more by the BLIS-positive S. salivarius than by the BLIS-negative strain. Our result indicates that SIC plays a role in the inhibition of S. salivarius BLIS. © 2009 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.

    DOI: 10.1111/j.1574-6968.2009.01696.x

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  129. Experiments of wind turbine blades with rocket triggered lightning

    Minowa M., Sumi S., Minami M., Horii K.

    IEEJ Transactions on Power and Energy   Vol. 129 ( 5 )   2009.7

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    This paper describes the results of the experiments of wind turbine blades with rocket triggered lightning. A number of wind power stations have been projected and planted. Lightning damage to wind turbines has been an increasing problem recently. So development on protection of wind power plants from lightning is necessary to be fully run for the future. In the experiments, the 1.8 m long blade was struck by the lightning discharge triggered by rocket. For the blade kept dry inside, the very strong discharge of positive peak current 28 kV, total charge 520 Coulombs, was triggered, but the breakdown did not occur through the blade into inside. Another blade polluted by salty wet inside was struck by the lightning discharge of negative peak current of 4kA with 0.5 Coulombs. The lightning was small, nevertheless, the blade was broken at the upper edge and the blade was disconnected by crack. For the protection of blade, the blade surface was covered with stainless steel plate. The blade itself was safe when the big positive lightning discharged, while most part of stainless steel cover was burned out. Supplement breakdown tests of wind turbine blade were carried out with lightning impulse voltage in laboratory. As a result, it became clear that the blade kept dry inside was an effective lightning protection of wind turbine blades. © 2009 The Institute of Electrical Engineers of Japan.

    DOI: 10.1541/ieejpes.129.689

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  130. Relationship between nutritional therapy and surgery in Crohn's disease

    Takahashi H., Ando T., Watanabe O., Maeda O., Ishiguro K., Ishikawa D., Hasegawa M., Minami M., Goto Y., Kusugami K., Ina K., Ohmiya N., Niwa Y., Goto H.

    Hepato-Gastroenterology   Vol. 56 ( 93 ) page: 1044 - 1048   2009.7

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    Background/Aims: Crohn's disease is often refractory and some patients require repeated surgical treatment. Nutritional therapy with an elemental diet has been reported effective in improving nutritional state and suppressing inflammation, and might be expected to assist in minimizing the need for surgery. We evaluated the relationship between an elemental diet and the period that patients spent without intestinal resection. Methodology: A total of 153 patients with Crohn's disease who visited our hospital from July, 1999 to July, 2005 were enrolled. The relationship between the caloric content of an elemental diet and surgery as an endpoint was examined using Cox regression analysis. Cumulative non-operation rates were calculated by the Kaplan-Meier method. Statistical significance was determined using the log-rank test. Results: Among patients with jejunoileal involvement, patients receiving an elemental diet providing 900 kcal or more per day showed a statistically significant improvement in cumulative non-operation rate. Among those without jejunoileal involvement, in contrast, the cumulative non-operation rate did not differ among those receiving an elemental diet of less or more than 900 kcal per day. Conclusions: The use of an elemental diet of 900 kcal per day may be effective in avoiding surgery in patients with jejunoileal lesions. This diet may be useful in improving long-term convalescence in these patients. © H.G.E. Update Medical Publishing S.A.

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  131. 鎌倉由比ケ浜南遺跡から出土した獣骨の14C年代-人骨の14C年代との比較-.

    南 雅代

    第10回AMSシンポジウム報告書     page: 165 - 168   2009

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  132. 封管法で微量のシュウ酸をガス化した場合のガス組成

    南 雅代

    XX     page: 152 - 155   2009

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  133. 封管法で微量のシュウ酸をガス化した場合のガス組成

    南 雅代

    名古屋大学加速器質量分析計業績報告書 XX     page: 152 - 155   2009

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  134. Relationship between Nutritional Therapy and Surgery in Crohn's Disease

    Takahashi Hironao, Ando Takafumi, Watanabe Osamu, Maeda Osamu, Ishiguro Kazuhiro, Ishikawa Daisuke, Hasegawa Motofusa, Minami Masaaki, Goto Yasuyuki, Kusugami Kazuo, Ina Kenji, Ohmiya Naoki, Niwa Yasumasa, Goto Hidemi

    HEPATO-GASTROENTEROLOGY   Vol. 56 ( 93 ) page: 1044 - 1048   2009

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  135. Comparison of δ^<13>C and ^<14>C activities of CO_2 samples combusted in closed-tube and elemental-analyzer systems. Reviewed

    南 雅代

    Nucl.Instr.and Meth.in Phys.Res. doi:10.1016/j.nimb.2009.10.063     2009

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  136. CsrS (CovS) Regulates the Susceptibility to Antibiotics in Streptococcus pyogenes

    Minami M., Tatsuno I., Isaka M., Ohta M., Hasegawa T.

    INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES   Vol. 12   page: E260 - E260   2008.12

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  137. A case of cytomegalovirus enterocolitis diagnosed by the double-balloon enteroscopy

    Fujita T., Ando T., Watanabe O., Maeda O., Ishiguro K., Takahashi H., Minami M., Hasegawa M., Ishikawa D., Ohmiya N., Niwa Y., Goto H.

    Hepato-Gastroenterology   Vol. 55 ( 88 ) page: 2087 - 2090   2008.11

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    A 73-year-old woman presented with massive bloody stools while undergoing hospitalization for multiple myeloma. Colonoscopy and transrectal double-balloon enteroscopy revealed multiple punched-out ulcers throughout the entire colon and in the distal ileum. Cytomegalovirus was detected in the biopsy specimens of both the colonic and ileal mucosa and in the peripheral blood, which lead the diagnosis of CMV enterocolitis. The patient's gastrointestinal bleeding was temporarily improved by the administration of ganciclovir, though she died thereafter due to progression of the primary disease. We herein report the effectiveness of transrectal double-balloon enteroscopy for the diagnosis of cytomegolo-virus enterocolitis. © H.G.E. Update Medical Publishing S.A., Athens-Stuttgart.

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  138. Immunological function of thymoma and pathogenesis of paraneoplastic myasthenia gravis

    Okumura M., Fujii Y., Shiono H., Inoue M., Minami M., Utsumi T., Kadota Y., Sawa Y.

    General Thoracic and Cardiovascular Surgery   Vol. 56 ( 4 ) page: 143 - 150   2008.4

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    Thymoma and thymic carcinoma are the representative tumors arising from the thymic epithelium. Thymoma is well known for association with autoimmune diseases including myasthenia gravis, suggesting its biological activity. Herein, recent progress in research of thymoma is reviewed with reference to its immunological function. Myasthenia gravis is frequently associated with WHO type B1 and B2 thymomas. These types of thymomas hold a significant number of CD4+CD8+ double-positive T cells, and at the same time, the neoplastic epithelial cells express HLA-DR molecules at a slightly reduced level compared with the normal thymus. The impaired expression of HLA-DR molecules in neoplastic epithelial cells of thymomas possibly affects positive selection of CD4+CD8- single-positive T cells and may result in alteration of its repertoire. The function of thymoma neoplastic cells as the cortical epithelium of the thymus and the morphological resemblance of thymomas to the cortex suggest that thymoma is of cortical epithelial origin; this might imply that thymoma lacks the functional medulla where professional antigenpresenting cells are engaged in negative selection. These findings suggest that thymoma generates autoreactive T cells causing autoimmunity. Further investigation on immunological function of thymoma is supposed to elucidate the pathogenesis of thymoma-related autoimmunity and the high affinity of thymoma with myasthenia gravis. In addition, studying the biology of thymoma is also expected to contribute to further understanding of T-cell development and immunological tolerance in the human, because thymoma can be considered an acquired thymus. © 2008 The Japanese Association for Thoracic Surgery.

    DOI: 10.1007/s11748-007-0185-8

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  139. 鎌倉由比ケ浜南遺跡から出土した獣骨の^<14>C年代-人骨の^<14>C年代との比較-

    南 雅代

    第10回AMSシンポジウム報告書     page: 165 - 168   2008

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  140. 試料燃焼-二酸化炭素精製における炭素同位体比分別-封管法と元素分析計による試料調製の違い-.

    南 雅代

    名古屋大学加速器質量分析計業績報告書 XIX     page: 117 - 126   2008

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  141. 古人骨の同一個体内における部位の違いによるδ13C・δ15N値、14C年代の相違の有無.

    南 雅代

    名古屋大学加速器質量分析計業績報告書 XIX     page: 117 - 126   2008

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  142. Strontium isotope analysis using resonance ionization mass spectrometry for determination of bone origin. Reviewed

    南 雅代

    Journal of Nuclear Science and Technology 5     page: 97 - 100   2008

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  143. strontium isotope analysis using resonance ionization mass spectrometry for determination of bone origin Reviewed

    南 雅代

    Journal of Nuclear Science and Technology Supplement5     page: 97 - 100   2008

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  144. A Case of Cytomegalovirus Enterocolitis Diagnosed by the Double-balloon Enteroscopy

    Fujita Takayoshi, Ando Takafumi, Watanabe Osamu, Maeda Osamu, Ishiguro Kazuhiro, Takahashi Hironao, Minami Masaaki, Hasegawa Motofusa, Ishikawa Daisuke, Ohmiya Naoki, Niwa Yasumasa, Goto Hidemi

    HEPATO-GASTROENTEROLOGY   Vol. 55 ( 88 ) page: 2087 - 2090   2008

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  145. Characterization of the NAD-glycohydrolase in streptococcal strains

    Tatsuno I., Sawai J., Okamoto A., Matsumoto M., Minami M., Isaka M., Ohta M., Hasegawa T.

    Microbiology   Vol. 153 ( 12 ) page: 4253 - 4260   2007.12

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    The NADase (Nga) of group A streptococci (GAS) has been implicated in the pathogenesis of diseases such as streptococcal toxic shock-like syndrome (STSS) and necrotizing fasciitis. In this study we found that the proportion of NADase-positive strains among clinical isolates in Japan has increased over time. The GAS strains studied could be divided into three groups: strains lacking NADase activity, strains with low NADase activity, and strains with high NADase activity. The older strains, isolated before 1989, belonged to the 'no activity' group. Analysis using GST-Nga recombinants revealed that nga alleles of representative older strains encode inactive Nga. Mutational analysis of the GST-Nga recombinants suggested that residue 330 could be associated with reduced activity, based upon deduced amino acid sequences. We also investigated NADase activity of streptococcal strains other than GAS. All group G streptococcal isolates from STSS patients possessed nga genes encoding active enzymes. © 2007 SGM.

    DOI: 10.1099/mic.0.2007/009555-0

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  146. Anti-Saccharomyces cerevisiae antibodies in peptic ulcer disease with Helicobacter pylori

    Minami Masaaki, Hasegawa Tadao, Ando Takafumi, Ohta Michio, Goto Hidemi

    JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY   Vol. 22   page: A239 - A239   2007.10

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  147. Estimation of paleotemperature from racernization of aspartic acid in combination with radiocarbon age Reviewed

    Masayo Minami, Masami Takeyama, Koichi Mimura, Toshio Nakamura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 259 ( 1 ) page: 547 - 551   2007.6

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    We tried to estimate paleotemperatures from two chosen fossils by measuring D/L aspartic acid ratios and radiocarbon ages of the XAD-2-treated hydrolysate fractions in the fossils. The D/L aspartic acid ratio was measured with a gas chromatograph and radiocarbon dating was performed using a Tandetron AMS system at Nagoya University. The radiocarbon age of a fossil mammoth molar collected from Bykovsky Peninsula, eastern Siberia, was found to be 35,170 +/- 300 BP as an average value for the XAD-treated hydrolysate fractions. The aspartic acid in the mammoth molar showed a little evidence of racemization, which might be due to in vivo racemization during the lifetime and then suggests negligible or no postmortem racemization during burial in permafrost. From four animal bone fossils collected from a shell mound excavated at the Awazu submarine archeological site in Lake Biwa, Shiga, Japan, the racemization-based effective mean temperature was calculated to be 15-16 degrees C using the D/L aspartic acid ratio of about 0.11 and the C-14 age of 4500 BP for the XAD-2-treated hydrolysate fractions in the fossils. The average annual temperature was estimated to be 11-12 degrees C, which approximates to the temperature that the fossils experienced during burial at the site. Although the application of racemization ratios in fossils as paleotemperature indicators is surrounded with many difficulties, the results obtained in this study suggest its feasibility. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2007.01.201

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  148. Cytomegalovirus infection in severe ulcerative colitis patients undergoing continuous intravenous cyclosporine treatment in Japan

    Minami Masaaki, Ohta Michio, Ohkura Teruko, Ando Takafumi, Ohmiya Naoki, Niwa Yasumasa, Goto Hidemi

    WORLD JOURNAL OF GASTROENTEROLOGY   Vol. 13 ( 5 ) page: 754 - 760   2007.2

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  149. 514 A Report on Practice and evaluation of Environmental Education

      ( 45 ) page: 653 - 656   2007.2

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    Language:Japanese   Publisher:Architectural Institute of Japan  

    CiNii Research

  150. Application of <sup>14</sup>C wiggle-matching to support dendrochronological analysis in Japan

    Nakamura T, Okuno M, Kimura K, Mitsutani T, Moriwaki H, Ishizuka Y, Kim K.H, Jing B.L, Oda H, Minami M, Takada H

    Tree-Ring Research   Vol. 63 ( 1 ) page: 37 - 46   2007

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    14C wiggle-matching was applied to two wood samples closely related to geological and archaeological events with associated dendrochronological dates, to demonstrate the accuracy of 14C dating with accelerator mass spectrometry (AMS). Wiggle-matching on charred wood with bark, excavated from a pyroclastic mud-flow deposited by the huge 10th Century eruption of the Baitoushan Volcano, revealed the eruption age as cal A.D. 935 +8/-5 with 95% confidence. This date is consistent with the eruption age of A.D. 912 to A.D. 972 estimated by dendrochronology on two wooden boards that had clear stratigraphical connections to the B-Tm tephra deposit in Japan, an ash fall layer formed by the eruption of the Baitoushan Volcano. The date is also consistent with an A.D. 937-938 date estimated by the analysis of varved sediments from Lake Ogawarako in Aomori prefecture. The other wooden board collected from the Mawaki archaeological site in Ishikawa prefecture was wiggle-matched as 783 +13/-11 cal B.C. with 95% confidence, which is consistent with the dates of 830 cal B.C. to 759 cal B.C. obtained for seven wooden poles from the same wooden structures as the wooden board. These results are highly encouraging for obtaining accurate dates on wood when dendrochronology cannot be used. Copyright © 2007 by the Tree-Ring Society.

    DOI: 10.3959/1536-1098-63.1.37

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  151. 鵜澤和宏:鎌倉由比ヶ浜埋葬人骨および獣骨の地球化学的研究.

    南 雅代

    古屋大学加速器質量分析計業績報告書 XVIII     page: 134 - 143   2007

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  152. 鎌倉由比ケ浜埋葬人骨および獣骨の地球化学的研究

    南 雅代

    名古屋大学加速器質量分析計業績報告書 XVIII     page: 134 - 143   2007

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  153. Marine reservoir effect deduced from 14C dates on marine shells and terrestrial remains at archeological sites in Japan. Reviewed

    南 雅代

    Nucl. Instr. and Meth. in Phys. Res. B259     page: 453 - 459   2007

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  154. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age. Reviewed

    南 雅代

    Nucl. Instr. and Meth. in Phys. Res. B259     page: 547 - 551   2007

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  155. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites

    Minami M., Terui A., Takaoka N., Nakamura T.

    Meteoritics and Planetary Science   Vol. 41 ( 4 ) page: 529 - 540   2006.4

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    We examined an improved system for extraction of carbon from meteorites, using a vacuum-tight RF melting method. Meteorite samples mixed with an iron combustion accelerator, including a specific amount of carbon (0.052%), were combusted in a RF furnace (LECO HF-10). 14CO2 extracted from the meteorite was diluted with a known amount of nearly 14C-free CO2, evolved from the iron accelerator on combustion. The 14C activities of the recently fallen Holbrook (L6) and Mt. Tazerzait (L5) meteorites were measured by this method. The mean value was 56.5 ± 3.0 dpm/kg, which is similar to the values reported for recently fallen L6 chondrites. Furthermore, terrestrial ages were measured for four Antarctic meteorites: 1.8 ± 0.5 kyr for Yamato (Y-) 75097 (L6), 1.8 ± 0.5 kyr for Y-75108 (L6), and 0.1 ± 0.1 kyr for Y-74192 (H5). For Y-74190 (L6), an apparent age of 0.8 ± 0.5 kyr was calculated. After consideration of the shielding effect by using 22Ne/21Ne values, we obtained about 1.8 kyr for the terrestrial age of this chondrite. The five samples Y-74190, Y-75097, and Y-75108, together with Y-75102 (L6) and Y-75271 (L6), have been reported to be paired and fragments of an L-chondrite shower (Honda 1981; Takaoka 1987). The result of this work and literature data for the latter two samples confirmed that they are paired. More discussion and experimental work are needed for other recently fallen meteorites, both for L and H chondrites, and a correction for the shielding effect should be done to determine a more reliable terrestrial age. © The Meteoritical Society, 2006.

    DOI: 10.1111/j.1945-5100.2006.tb00480.x

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  156. Application of Sr isotope to geochemical mapping and provenance analysis : the case of Aichi Prefecture, central Japan.

    南 雅代

    Applied Geochemistry 21     page: 419 - 436   2006

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  157. An improved extraction system to measure carbon-14 terrestraial ages of meteorites and pairing of the Anttrctic Yamamoto-75097 group chondrites

    南 雅代

    Meteoritics & Planetary Science 41     page: 529 - 540   2006

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  158. Interleukin-17 levels in Helicobacter pylori-infected gastric mucosa and pathologic sequelae of colonization

    Mizuno Tomokazu, Ando Takafumi, Nobata Kazuo, Tsuzuki Tomoyuki, Maeda Osamu, Watanabe Osamu, Minami Masaaki, Ina Kenji, Kusugami Kazuo, Peek Richard M., Goto Hidemi

    WORLD JOURNAL OF GASTROENTEROLOGY   Vol. 11 ( 40 ) page: 6305 - 6311   2005.10

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  159. Long-term follow-up after eradication of Helicobacter pylori with omeprazole, clarithromycin, and tinidazole (OCT regimen) in a Japanese population

    Ando T, Minami M, Mizuno T, Watanabe O, Ishiguro K, Ina K, Kusugami K, Nobata K, Nishiwaki T, Tsuzuki T, Shimada M, El-Omar E, Goto H

    HELICOBACTER   Vol. 10 ( 5 ) page: 379 - 384   2005.10

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  160. Database for geochemical mapping of the northeastern areas of Aichi Prefecture, central Japan -XRF major element data of stream sediments collected in 1994 to 2004-

    南 雅代, 山本 鋼志, 三村 耕一

    Jour. Earth Planet. Sci. Nagoya Univ. 52     page: 25 - 67   2005

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  161. Carbon and nitrogen isotopic fractionation in bone collagen during chemical treatment.

    南 雅代, 中村 俊夫

    Chemical Geology 222     page: 65 - 74   2005

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  162. Antibacterial Effect of Mupirocin versus Helicobacter pylori in vitro

    Minami Masaaki, Ando Takafumi, Ohta Michio, Goto Hidemi

    INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS   Vol. 26   page: S78 - S79   2005

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  163. Carbon and nitrogen isotope fractionation in bone collagen during chemical treatment.

    南 雅代

    Chemical Geology 222     page: 65 - 74   2005

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  164. Characteristics of Helicobacter pylori-induced gastritis and the effect of H-pylori eradication in patients with chronic idiopathic thrombocytopenic purpura

    Ando T, Tsuzuki T, Mizuno T, Minami M, Ina K, Kusugami K, Takamatsu J, Adachi K, El-Omar E, Ohta M, Goto H

    HELICOBACTER   Vol. 9 ( 5 ) page: 443 - 452   2004.10

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  165. DNA typing for Helicobacter pylori isolates from eradication-failed patients: comparison of the isolates before and after therapy

    Nada T, Ando T, Nobata K, Tsuzuki T, Minami M, Ina K, Iinuma Y, Ichiyama S, Ohta M, El-Omar E, Kusugami K, Goto H

    ALIMENTARY PHARMACOLOGY & THERAPEUTICS   Vol. 20   page: 39 - 47   2004.7

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  166. Studies on elemental distribution and circulation in view of multielement analysis of Eastern part of Aichi Preefecture.

    南 雅代, 山本 鋼志, 三村 耕一

    Heisei 15 th Report of Atomic Energy Usage no.43     page: 51 - 56   2004

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  167. Isotope diluted neutron activation analysis (ID-NAA) for quantitative analysis of PGEs and Re

    Tanaka T, Senda R, Shibata S, Minami M, Tanimizu M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 66 ( 15A ) page: A763 - A763   2002.8

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  168. Diurnal variation of CO<inf>2</inf> concentration, Δ <sup>14</sup>C and δ<sup>13</sup>C in an urban forest: Estimate of the anthropogenic and biogenic CO<inf>2</inf> contributions

    Takahashi H.A., Konohira E., Hiyama T., Minami M., Nakamura T., Yoshida N.

    Tellus, Series B: Chemical and Physical Meteorology   Vol. 54 ( 2 ) page: 97 - 109   2002.4

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    Diurnal variation in the atmospheric CO2 concentration and the carbon isotopic composition (Δ14C and δ13C) was measured in a forest in an urban area on 9 February 1999. The carbon isotope approach used in the present study differentiated between the quantitative contributions from anthropogenic and biogenic CO2 sources in the urban atmosphere. The anthropogenic (fossil fuel) and biogenic (soil respiration) contributions was estimated, and they ranged from 1 to 16% and from 2 to 8% of the total atmospheric CO2. The diurnal variation of the anthropogenic CO2 was the major cause of the total atmospheric CO2 variation, while the biogenic CO2 remained relatively constant throughout the day. Estimating the contribution of soil respired CO2 provided the mean residence time of soil respired CO2 within the forest atmosphere.

    DOI: 10.1034/j.1600-0889.2002.00231.x

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  169. Effective risperidone treatment for simple deteriorative disorder (simple schizophrenia): a case report

    Sekine Y, Takei N, Iyo M, Mori N, Minami M, Ohta T

    SCHIZOPHRENIA RESEARCH   Vol. 50 ( 3 ) page: 213 - 214   2001.7

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  170. Effective risperidone treatment for simple deteriorative disorder (simple schizophrenia): A case report

    Sekine Y., Takei N., Iyo M., Mori N., Minami M., Ohta T.

    Schizophrenia Research   Vol. 50 ( 3 ) page: 213 - 214   2001.7

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    DOI: 10.1016/S0920-9964(00)00049-9

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  171. An extraction system to measure carbon-14 terrestrial ages of meteorites with a tandetron AMS at Nagoya University

    Minami M., Nakamura T.

    Radiocarbon   Vol. 43 ( 2 PART I ) page: 263 - 269   2001

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    We have constructed a system to extract carbon from meteorites using a vacuum-tight RF melting method in order to study radiocarbon activities in meteorites. The extraction system was examined using iron standards of known carbon content. The carbon extraction efficiencies and 14C ages of the iron standards by this method were compared with the results obtained previously by our older melting system and a wet oxidation method. Higher collection efficiencies of about 90% for the iron samples of relatively high carbon content were achieved by the new system. The efficiency of extracting a small amount of carbon is also near 90% after improving the extraction procedure. The 14C ages of the iron standards were compared to the ages by the wet method. The results indicate that contamination by modern carbon is negligible in the system. Furthermore, terrestrial 14C ages of two Antarctic meteorites, Y-75102 and ALH-77294, from the Yamato and Allan Hills ice fields, respectively, were determined. The age of Y-75102 is estimated 4.0 ± 1.0 ka, and the age of ALH-77294 is 19.5 ± 1.2 ka. The 14C ages on the meteorites roughly agree with the literature value. However, further study is needed in improvement on reducing a background value and of complete fusion of a meteorite in the extraction system. © 2001 by the Arizona Board of Regents on behalf of the University of Arizona.

    DOI: 10.1017/s0033822200038091

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  172. Studies on elemental distribution and cycles in geosphere using multisample and multielements analyses.

    南 雅代

    Heisei 12th Report of Atomic energy usage no.40     page: 118 - 136   2001

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  173. Geochemical mapping as a fruitful field training for geosciences

    山本 鋼志, 三村 耕一, 南 雅代

    Chisitsu News vol.558     page: 41 - 47   2001

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  174. Neutron activation analysis using an automated γ-ray detection system at Radioisotope Center, Nagoya University.

    南 雅代

    Annual Report of Nagoya University Museum vol.17     page: 15 - 32   2001

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  175. AMS radiocarbon age for fossil bone by XAD-2 chromatography method

    Minami M., Nakamura T.

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   Vol. 172 ( 1-4 ) page: 462 - 468   2000

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    Language:Japanese   Publisher:Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms  

    The XAD-2 chromatography method was examined for its ability to efficiently eliminate exogenous organic matter from fossil bones and to improve the accuracy of radiocarbon (14C) dating and stable isotope determinations on bone proteins. The fossil bones used in the experiment were animal fossil bones collected from the Awazu submarine archaeological site, Shiga, Japan. For comparison, the gelatin-extraction method was also applied to the same samples. It was found that the gelatin-extraction method is sufficient for 14C dating on well-preserved bones, but insufficient on poorly preserved bones, containing less than 1% extractable gelatin. The XAD-2 resin is useful for the clean up of proteins especially from poorly preserved bones. The carbon stable isotope fractionation of around 1‰ by XAD-2 treatment on modern collagen standards was larger than reported previously. The isotopic variation by sequential extraction of bones probably originates from changes in the amino acid composition and seems to be less sensitive to the indication of the removal of organic contamination. © 2000 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0168-583X(00)00397-9

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  176. The HVEE tandetron AMS system at Nagoya University

    Nakamura T., Niu E., Oda H., Ikeda A., Minami M., Takahashi H., Adachi M., Pals L., Gottdang A., Suya N.

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   Vol. 172 ( 1-4 ) page: 52 - 57   2000

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    In 1996/97, we installed a second-generation AMS system (model 4130-AMS) manufactured by HVEE, B.V., The Netherlands. Although we encountered a lot of problems during the installation and tuning up of the machine, our new system has now reached good stability and reproducibility in performing 14C/12C and 13C/12C measurements. According to the reproducibility tests conducted in January 1999, where six graphite targets prepared from HOxII standard material were measured, the standard deviation for 14C/12C reproducibility is around 1.6%e (comparable with counting statistics) and that for 13C/12C is 0.28%e. The background level of the AMS system was measured using a pure graphite (commercial graphite rod). It lies between 50 and 55 ka BP. We are still on the way to reduce the background. However, we are now prepared to start routine measurements of unknown-age samples. © 2000 Elsevier Science B. V. All rights reserved.

    DOI: 10.1016/S0168-583X(00)00398-0

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  177. Isotope fractionation by XAD-2 treatment

    MINAMI Masayo, IKEDA Akiko

    Summaries of Researches using AMS at Nagoya University   Vol. 9   page: 308 - 311   1998.3

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    XAD-2 resin is considered the good materials to separate quantitatively the polar amino acids from the less polar fulvic and humic acids. To evaluate if XAD-2 treatment affects isotope values, δ ^<13>C and δ ^<15>N were measured on bulk sample by a simple preparation, gelatin-collagen extracted by usual method, decalcified bone powder and XAD-purified hydrolysates from a modern well-preserved ivory sample "IVRY-1". Among three fractions of bulk, gelatin-collagen and decalcified ivory powder, there are almost no difference in both δ ^<13>C and δ ^<15>N. On the other hand, XAD-treated hydrolysate has apparently more positive δ ^<13>C and δ ^<15>N values than the three fractions. However, it is doubt whether the result is due to isotope fractionation by XAD-2 treatment because the fulvic and humic contamination in the collagen might affect isotope values of bulk, gelatin-collagen and decalcified ivory powder. The C/N ratio in fulvic and humic phases is significantly more higher than collagen. In the next study, we have to study modern collagen standards or amino acid standards to evaluate if XAD-2 resin introduce isotope fractionation.

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  178. Approximate estimation method of the degree of lanthanide tetrad effect and application to the tetrad effects in lanthanide ionic radii

    Minami M., Masuda A.

    Journal of Magnetism and Magnetic Materials   Vol. 177-181 ( PART 2 ) page: 1021 - 1022   1998.1

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    Fitting of quadratic curves to four defined subgroups of lanthanides shows that the tetrad effects in Ln3+ ionic radii with coordination number (CN) 6 are larger than those with CN 8. The features for the first tetrad are peculiar compared with other three subgroups, with both CN. The observed facts can be explained in terms of configuration of 4f electron clouds and their interaction with ligands. © 1998 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0304-8853(97)00957-8

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  179. Effects of dietary docosahexaenoic acid on survival time and stroke-related behavior in stroke-prone spontaneously hypertensive rats

    Minami M., Kimura S.I., Endo T., Hamaue N., Hirafuji M., Monma Y., Togashi H., Yoshioka M., Saito H., Watanabe S., Kobayashi T., Okuyama H.

    General Pharmacology   Vol. 29 ( 3 ) page: 401 - 407   1997.9

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    1. Dietary docosahexaenoic acid (DHA) suppressed the age dependent increase in systolic blood pressure and prolonged the average survival time of stroke-prone spontaneously hypertensive rats (SHRSP). 2. Dietary DHA (1% and 5% in diets) altered the circadian rhythm of SHRSP, causing significant increases in ambulatory activity during the dark period. At the onset of stroke, desynchronization with light and dark phases and new biological rhythms were noted in all of the control SHRSP (DHA 0%). DHA treated SHRSP did not show such behavioral changes. 3. These effects were accompanied by the increase of DHA and the decrease of AA levels in plasma and brain cortex. 4. It was concluded that dietary DHA suppresses the development of hypertension and stroke-related behavioral changes, resulting in prolongation of the SHRSP's life span.

    DOI: 10.1016/S0306-3623(96)00487-9

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  180. Approximate estimation of the degree of lanthanide tetrad effect from the data potentially involving all lanthanides

    Minami M., Masuda A.

    Geochemical Journal   Vol. 31 ( 3 ) page: 125 - 133   1997

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    Here is presented a mathematical method which enables us to evaluate the degrees of lanthanide tetrad effects from the data involving all of REE. Each of the four spans corresponding to four subgroups, La-Nd, Pm-Gd, Gd-Ho, and Er-La, is approximately fitted to a quadratic function and the resultant quadratic coefficient is employed as a numerical indicator for the tetrad effect. For the purpose of approximation by a quadratic function, the least-squares method it used under the constraint that the first and second quadratic curves intersect at the middle point between Pm and Sm, and that the third and fourth ones intersect at the middle Point between Ho and Er. Since, mathematically, the subject is a problem on the conditional extremum, the method of Lagrange undetermined multipliers should be used. It is noted that the degrees of four tetrad effects can be evaluated simultancously. This method can lead us to the mathematically well-defined estimation of the tetrad effect.

    DOI: 10.2343/geochemj.31.125

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  181. The genomic structure and chromosomal localization of the mouse STAT3 gene

    Shi W., Inoue M., Minami M., Takeda K., Matsumoto M., Matsuda Y., Kishimoto T., Akira S.

    International Immunology   Vol. 8 ( 8 ) page: 1205 - 1211   1996

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    A variety of cytokines induce the tyrosine phosphorylation of signal transducers and activators of transcription (STATs). Activation of the same STAT proteins by distinct cytokines and activation of different STAT proteins by each cytokine are thought to contribute to redundancy and pleiotropy of cytokine actions respectively. STAT3 is rapidly tyrosine phosphorylated in response to IL-6, ciliary neurotrophic factor, oncostatin M, leukemia inhibitory factor, IL-11, granulocyte colony stimulation factor and epidermal growth factor. In this report we have isolated and characterized the mouse genomic structure of STAT3. The mouse STAT3 gene consisted of 24 exons which spanned > 37 kb. The structure of the mouse STAT3 gene was almost identical to that of the human STAT2 gene, including the number and size of exons, indicating that the exon-intron organization had already been accomplished before these two genes duplicated, and then these genes evolved to respond to different ligands. By molecular linkage analysis with interspecific backcross mice the STAT3 gene mapped at 1.4 cM proximal to D11Mit59 on mouse chromosome 11. The promoter region contained potential regulatory elements such as GATA, NF-IL-6, PEBPP, Sp-1, AP-2 binding sites, cAMP response element, CAAT box and E-box. Transient expression of constructs harboring the 5' flanking region of the STAT3 gene fused to the luciferase gene showed that a 160 bp sequence upstream of the transcription start site conferred a basal and an IL-6-inducible promoter activity.

    DOI: 10.1093/intimm/8.8.1205

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  182. Two Archean Sm-Nd ages of 3.2 and 2.5 Ga for the Marble Bar Chert, Warrawoona Group, Pilbara Block, Western Australia.

    Minami Masayo, Shimizu Hiroshi, Masuda Akimasa, Adachi Mamoru

    GEOCHEMICAL JOURNAL   Vol. 29 ( 6 ) page: 347 - 362   1995

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    Isotopic data of Sm-Nd, La-Ce and Rb-Sr systems, rare earth element (REE) abundances and major element compositions are reported for the Archean Marble Bar Chert from the Towers Formation of the Salgash Subgroup, Warrawoona Group, Pilbara Block, Western Australia. The Marble Bar Chert records two Sm-Nd ages; 3.2±0.3 Ga for red (or black) and white banded cherts and 2.5±0.2 Ga for yellowish gray cherts. These ages contain relatively large uncertainties and are younger than 3.45 Ga U-Pb zircon ages previously reported for the Salgash Subgroup. The results imply some later perturbation in Sm-Nd system of these cherts after their formation. However, the older age of 3.2±0.3 Ga is close to the U-Pb zircon ages for the Salgash Subgroup within analytical errors and therefore can be regarded as the formation time of the banded cherts. On the other hand, the younger age of 2.5±0.2 Ga for the yellowish gray cherts is thought to reflect the time of later thermal events and the cherts do not retain their original chemical features. The 3.2 Ga Sm-Nd age for the Marble Bar banded cherts is the first Archean record obtained for the Archean cherts; their initial ε<sub>Nd</sub> value of +1.0±3.0 holds the original nature at their formation without severe geochemical disturbance. The obtained mantle-like depleted or chondritic feature at 3.2 Ga for the banded cherts, together with their SiO<sub>2</sub> and Fe<sub>2</sub>O<sub>3</sub>∗ data and positive Eu anomalies in REE patterns, suggests substantially large contribution of hydrothermal solution derived from depleted- or chondritic-mantle to the cherts and inorganic origin of the cherts, which contrasts to Phanerozoic biogenic cherts.

    DOI: 10.2343/geochemj.29.347

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  183. Glendonite concretion formation due to dead organism decomposition

    Yusuke Muramiya, Hidekazu Yoshida, Masayo Minami, Tomoyuki Mikami, Toshinori Kobayashi, Kousuke Sekiuchi, Nagayoshi Katsuta

    Sedimentary Geology   Vol. 429   page: 106075 - 106075   2022.3

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    DOI: 10.1016/j.sedgeo.2021.106075

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  184. Development of AMS 14C analysis during the past 40 years

    Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 68 ( 0 ) page: 206   2021

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    <p></p>

    DOI: 10.14862/geochemproc.68.0_206

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  185. Dietary of Medieval Japanese people estimated from Sr isotopic analysis and trace element concentration of archaeological cremated bones.

    Sawada Hitoshi, Wakaki Shigeyuki, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 68 ( 0 ) page: 153   2021

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    DOI: 10.14862/geochemproc.68.0_153

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  186. Analysis of carbon components in atmospheric aerosols collected in Kurdistan province, Iran, using radiocarbon

    Kataoka Kentaro, Minami Masayo, Takahashi Hiroshi, Asahara Yoshihiro, Mohammadi Asrin, Azizi Hossein

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 68 ( 0 ) page: 28   2021

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    DOI: 10.14862/geochemproc.68.0_28

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  187. Estimation of travertine formation age in NW Iran using radiocarbon dating

    Zhang YuBo, Asahara Yoshihiro, Kaneko Masaki, Minami Masayo, Azizi Hossein, Amin―Rasouli Hadi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 68 ( 0 ) page: 66   2021

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    DOI: 10.14862/geochemproc.68.0_66

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  188. Origin analysis of trace elements including arsenic in travertine springs in northwestern Iran

    Kaneko Masaki, Asahara Yoshihiro, Minami Masayo, Kurita Naoyuki, Azizi Hossein, Amin―Rasouli Hadi, Zhang Yubo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 68 ( 0 ) page: 125   2021

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    DOI: 10.14862/geochemproc.68.0_125

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  189. Rapid formation of gigantic spherical dolomite concretion in marine sediments Reviewed

    Yusuke Muramiya, Hidekazu Yoshida, Kaoru Kubota, Masayo Minami

    Sedimentary Geology   Vol. 404   page: 105664 - 105664   2020.7

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    DOI: 10.1016/j.sedgeo.2020.105664

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  190. Radiocarbon dating of bone remains excavated from archaeological site.

    Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 ) page: 193   2020

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    DOI: 10.14862/geochemproc.67.0_193

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  191. Establishment of a new CO2 extraction method for radiocarbon analysis of dissolved inorganic carbon in water samples and comparison of it with the conventional methods

    Sato Rina, Takahashi Hiroshi, Handa Hiroko, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 ) page: 157   2020

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    <p></p>

    DOI: 10.14862/geochemproc.67.0_157

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  192. Dietary and inhabited area estimated from Sr isotopic analysis of cremated bones excavated from the Ishibotokedani site in Binmanji Temple, Shiga Prefecture

    Sawada Hitoshi, Wakaki Shigeyuki, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 ) page: 198   2020

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    DOI: 10.14862/geochemproc.67.0_198

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  193. Isotopic and geochemical assessment of travertine springs in northwestern Iran International coauthorship

    Kaneko Masaki, Asahara Yoshihiro, Minami Masayo, Kurita Naoyuki, Azizi Hossein, Amin―Rasouli Hadi, Zhang Yubo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 ) page: 126   2020

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    DOI: 10.14862/geochemproc.67.0_126

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  194. Strontium isotope dating of carbonate concretions International coauthorship

    Asahara Yoshihiro, Yoshida Hidekazu, Yamamoto Koshi, Katsuta Nagayoshi, Minami Masayo, Metcalfe Richard

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 ) page: 166   2020

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    DOI: 10.14862/geochemproc.67.0_166

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  195. Paleoenvironmental reconstruction of northwest Iran based on <sup>14</sup>C age and chemical compositions of travertines International coauthorship

    Zhang Yubo, Asahara Yoshihiro, Minami Masayo, Kaneko Masaki, Amin-Rasouli Hadi, Azizi Hossein

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 ) page: 200   2020

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    <p>Travertine is calcium carbonate precipitated from groundwater and spring water, and is widely distributed in northwest Iran. It is one of the suitable samples which can reconstruct paleoenvironment on land with a high resolution.In this study, I first determine the formation age of the travertine and then reveal its source by a series of data of 14C, δ13C, δ18O, 87Sr/86Sr and major- and trace-elemental compositions.</p>

    DOI: 10.14862/geochemproc.67.0_200

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  196. Radiocarbon changes of unpoisoned water samples during long-term storage Reviewed

    Takahashi Hiroshi A, Minami Masayo, Aramaki Takafumi, Handa Hiroko, Matsushita Makoto

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 455   page: 195 - 200   2019.9

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    The preservation of unpoisoned water samples was investigated by radiocarbon analysis with five kinds of natural waters. Although refrigerated and shielded from light, the unpoisoned samples underwent carbon isotopic changes, even after short periods of storage (e.g., 5 days). Examinations of the isotopic changes during long-term preservation (580 or 860 days) revealed C-14 increases to be approximate 10 pMC and delta C-13 decreases to be - 5.4 parts per thousand. Performance tests on the sample bottles suggested that PAN (polyacrylonitrile) and glass were suitable materials for long-term preservation.

    DOI: 10.1016/j.nimb.2018.11.029

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  197. Retentive primary Sr isotopic ratio of source rock to sediment and sedimentary rock through multistage sedimentary cycles: Case study of stream sediments in Awajishima Island Reviewed

    Ohta Atsuyuki, Minami Masayo

    Chikyukagaku   Vol. 53 ( 2 ) page: 59 - 70   2019.6

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    <p>We have elucidated retention of primary Sr isotopic ratios in source rocks to sediments and sedimentary rocks during repeated sedimentation recycling. Twenty-three fine stream sediments (<180 μm) in Awajishima Island were used for the study. The <sup>87</sup>Rb/<sup>86</sup>Sr and <sup>87</sup>Sr/<sup>86</sup>Sr of stream sediments originated from Cretaceous Ryoke granitic rocks and Cretaceous sedimentary rocks (Izumi Group) were similar to those of the respective source rocks. Incidentally, the <sup>87</sup>Rb/<sup>86</sup>Sr-<sup>87</sup>Sr/<sup>86</sup>Sr of stream sediments in Awajishima Island suggests that Cretaceous felsic igneous rocks are the dominant source of clastics in Izumi Group. Stream sediments derived from Neogene and Quaternary sediments, which are originated from granitic rocks and Izumi Group, had comparable isotopic ratios to those of the respective primitive source rocks. Accordingly, <sup>87</sup>Rb/<sup>86</sup>Sr and <sup>87</sup>Sr/<sup>86</sup>Sr can be retained during the repeated recycling process of sediments and sedimentary rocks. Stream sediment is presumed to consist of clastics supplied from respective lithologies according to their exposed areas. However, <sup>87</sup>Sr/<sup>86</sup>Sr of stream sediment is not comparable to the values calculated from exposed areas of lithologies and isotopic data of parent rocks. The result suggests that amount of sedimentation denudation and production differs among different lithologies and is not simply proportional to their exposed areas.</p>

    DOI: 10.14934/chikyukagaku.53.59

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  198. Sr-87/Sr-86 age determination by rapidly formed spherical carbonate concretions (9, 1003, 2019) Reviewed

    Yoshida Hidekazu, Asahara Yoshihiro, Yamamoto Koshi, Katsuta Nagayoshi, Minami Masayo, Metcalfe Richard

    SCIENTIFIC REPORTS   Vol. 9 ( 1 ) page: 7184   2019.5

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  199. Sr-87/Sr-86 age determination by rapidly formed spherical carbonate concretions Reviewed

    Hidekazu Yoshida, Yoshihiro Asahara, Koshi Yamamoto, Nagayoshi Katsuta, Masayo Minami, Richard Metcalfe

    SCIENTIFIC REPORTS   Vol. 9 ( 1 ) page: 1003   2019.1

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    Isolated spherical carbonate concretions are frequently observed in finer grained marine sediments of widely varying geological age. Recent studies on various kinds of spherical carbonate (CaCO3) concretions revealed that they formed very rapidly under tightly constrained conditions. However, the formation ages of the isolated spherical carbonate concretions have never been determined. Here we use Sr-87/Sr-86 ratios to determine the ages of these spherical concretions. The studied concretions formed in the Yatsuo Group of Miocene age in central Japan. Some formed post- mortem around tuskshells (Fissidentalium spp.), while other concretions have no shell fossils inside. The deformation of sedimentary layers around the concretions, combined with geochemical analyses, reveal that Sr was incorporated into the CaCO3 concretions during their rapid formation. Strontium isotopic stratigraphy using Sr-87/Sr-86 ratios of all concretions indicates an age of 17.02 +/- 0.27 Ma, with higher accuracy than the ages estimated using micro- fossils from the Yatsuo Group. The results imply that the Sr-87/Sr-86 ratio of isolated spherical carbonate concretions can be applied generally to determine the numerical ages of marine sediments, when concretions formed soon after sedimentation. The Sr-87/Sr-86 age determinations have high accuracy, even in cases without any fossils evidence.

    DOI: 10.1038/s41598-019-38593-9

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  200. Landscape and early farming at Neolithic sites in Slemani, Iraqi Kurdistan: A case study of Jarmo and Qalat Said Ahmadan. Reviewed

    Tsuneki, A., Rasheed, K., Watanabe, N., Anma, R., Tatsumi, Y., Minami, M.

    Pasleorient   Vol. 45 ( 2 ) page: 33-52   2019

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  201. Gamma rays measurement for <sup>14</sup>C rich Dongrae hot spring water, Busan, South Korea

    Tanaka Tsuyoshi, Lee Seung-Gu, Yoon Yoon Yeol, Shibata Michihiro, Kondo Mari, Minami Masayo

    Annual Meeting of the Geological Society of Japan   Vol. 2019 ( 0 ) page: 566   2019

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    DOI: 10.14863/geosocabst.2019.0_566

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  202. <sup>14</sup>C dating of various carbon components in ground ice in Siberia for determination of its accurate formation age

    Sato Rina, Minami Masayo, Hiyama Tetsuya, Iwahana Go

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 66 ( 0 ) page: 87   2019

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    DOI: 10.14862/geochemproc.66.0_87

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  203. 14C ages and chemical compositions of travertines in northwest Iran: An attempt on paleoenvironmental reconstruction in west Asia

    Yubo Zhang, Asahara Yoshihiro, Minani Masayo, Rasouli Hadi, Azizi Hossein

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 66 ( 0 ) page: 99   2019

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    DOI: 10.14862/geochemproc.66.0_99

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  204. Pseudo-fixed dead time circuit for designing and implementation of JEOL-type X-ray counting system

    Kato Takenori, Suzuki Kazuhiro, Jeen Mi-Jung, Minami Masayo

    Chemical Geology   Vol. 484   page: 16 - 21   2018.5

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    DOI: 10.1016/j.chemgeo.2017.12.030

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  205. Generalized conditions of spherical carbonate concretion formation around decaying organic matter in early diagenesis Reviewed

    Yoshida,H, Yamamoto,K, Minami,M, Katsuta,N, Sirono,S, Metcalfe,R

    Scientific Reports   Vol. 8 ( 1 ) page: 6308   2018.4

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    DOI: 10.1038/s41598-018-24205-5

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  206. Bomb-C-14 Peak in the North Pacific Recorded in Long-Lived Bivalve Shells (Mercenaria stimpsoni) Reviewed

    Kubota Kaoru, Shirai Kotaro, Murakami-Sugihara Naoko, Seike Koji, Minami Masayo, Nakamura Toshio, Tanabe Kazushige

    JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS   Vol. 123 ( 4 ) page: 2867 - 2881   2018.4

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    The excess radiocarbon produced by nuclear bomb testing in the atmosphere in the 1950s-1960s (bomb-C-14) is used as a tracer in the surface ocean, extending our understanding of geophysics and biogeochemical cycles. However, there is no bomb-C-14 record for the high-latitude western North Pacific Ocean because of the paucity of long-lived marine calcifying organisms equivalent to reef-building corals. The shells of Stimpson's hard clam, Mercenaria stimpsoni, potentially provide such a record because the clam's lifespan is very long (>100 years). We analyzed C-14 in six live-caught M. stimpsoni shells from the western North Pacific (39.4 degrees N, 142 degrees E) and report, for the first time, the bomb-C-14 record with robust calendar ages based on annual growth increments. The value was constant in 1934-1952 (C-14=-66), with a sudden increase in 1959, a peak in 1974 (107), which was 60 lower than that of the Kuroshio Current, a gradual decline after 1974, and a current value of 16-18, which is approximate to 10 parts per thousand higher than the atmospheric value. The bomb-C-14 values are between the Kuroshio Current (the northwestern subtropical gyre) and Oyashio Current (the Western Subarctic Gyre) values, suggesting that the Tsugaru Current, downstream from the Kuroshio Current, mixes with the Oyashio Current after passing through Tsugaru Strait.

    DOI: 10.1002/2017JC013678

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  207. Possibility of radiocarbon dating from carbonate hydroxyapatite in burned animal bones

    Kida Risako, Minami Masayo, Kadowaki Seiji

    名古屋大学年代測定研究   ( 2 ) page: 40 - 45   2018.3

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    Burned bones may not provide accurate 14C dating because of no remain of collagen, an organic fraction in bone, suffered from heating. It is a very crucial assignment to enable burned bone to be 14C-dated. The purpose of this study is to test the reliability of 14C dating of carbonate hydroxyapatite (CHa), an inorganic fraction in bone, by using some burned bones from archaeological sites. The samples tested are five burned bones with gray to black colors of known-age collected from the Göytepe and Damjili Cave archeological sites in Azerbaijan. The XRD patterns of the bones showed that they had not suffered from the heat of &gt;600ºC, and that they have low crystallinity of apatite. The 14C dates of the Göytepe and Damjili Cave bones were younger than the dates obtained by charred materials excavated from the same layer for 400 years and 1000–1700 years, respectively. The results indicate that the bones burned at the low temperature (&lt;600ºC) have been heavily contaminated through diagenetic alteration during burial because of low crystallinity of apatite, and that the contaminants can not be removed from bone CHa by chemical treatment used in this study. In conclusion, secondary carbonate can be removed from even bones burned at low temperature (&lt;600ºC) by acetic acid treatment, while exogenous carbon included into the inner site of CHa can not be removed. The degree of contamination from foreign carbon in bone samples varies with burial condition. Therefore, it is important to check the apatite crystallinity of bone and burial environment of bones to perform reliable 14C dating using bone CHa.遺跡に埋没している被熱骨に対し,炭酸ヒドロキシアパタイトを用いて信頼性のある14C年代測定が可能であるかを検証した.用いた試料は,アゼルバイジャンのギョイテペ遺跡とダムジリ洞窟遺跡から出土した被熱動物骨7点である.これらの骨試料の炭酸ヒドロキシアパタイトの14C年代は,同層から得られた炭化植物片の年代よりも,ギョイテペ遺跡においては400年,ダムジリ洞窟遺跡においては1000-1700年程度若くなった.XRDパターン結果から,二次的に付着した炭酸塩は,試料の酢酸処理によって除去されていると考えられ,若くなった原因は,炭酸ヒドロキシアパタイト結晶内に入り込んだ汚染炭素によるものと考えられる.ギョイテペ遺跡とダムジリ洞窟遺跡遺跡による年代差は,ギョイテペ遺跡の周辺は火成岩が,ダムジリ洞窟の周辺は石灰岩が分布していて土壌環境が異なっていたためと考えられる.今後さらに,埋没環境,被熱温度が異なる骨試料に対し,炭酸ヒドロキシアパタイトを用いて信頼性のある14C年代を得るための検討を行なっていく必要がある.

  208. Establishment of bomb-14C record in North Japan using long-living bivalve shells and its paleoenvironmental application

    Kubota Kaoru, Shirai Kotaro, Sugihara―Murakami Naoko, Seike Koji, Tanabe Kazushige, Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 65 ( 0 ) page: 228   2018

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    DOI: 10.14862/geochemproc.65.0_228

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  209. Meteoric 10Be in bed-sediments of Ado and Yasu rivers flowing into Lake Biwa

    Fujisawa Jumpei, Minami Masayo, Saito―Kokubu Yoko

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 65 ( 0 ) page: 231   2018

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    DOI: 10.14862/geochemproc.65.0_231

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  210. Reconsideration of deposition age of the Maebashi mudflow by accurate 14C dating of wood fragments treated by ABOx-SC treatment

    Minami Masayo, Sato Kohei, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 65 ( 0 ) page: 291   2018

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    DOI: 10.14862/geochemproc.65.0_291

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  211. Formation of gigantic spherical carbonate concretion in early diagenesis

    Muramiya Yusuke, Yoshida Hidekazu, Yamamoto Koshi, Minami Masayo

    The Journal of the Geological Society of Japan   Vol. 123 ( 11 ) page: 939 - 952   2017.11

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    <p>Many types of spherical carbonate concretions are common in sedimentary strata of various ages worldwide. However, the process by which these concretions form is not completely understood. This study investigated a gigantic spherical carbonate concretion, with a diameter of ~1.5 m, identified in Miocene fine tuffaceous sandstone in the Lower Toyohama Formation (Morozaki Group) on Chita Peninsula, Aichi prefecture, Japan. Detailed field and microscopic observations, porosity measurements, mineralogical examination, and geochemical analyses were carried out to understand the formation of such a large concretion in a marine sediment. The field exposure shows that the concretion formed during early diagenesis, before compaction due to subsequent sedimentation. Thin section observations and geochemical, isotopic, and XRD analyses revealed that the concretion formed as calcite and was later replaced by dolomite. By combining the porosity and dolomite composition with a porosity-burial depth relationship, it is estimated that the concretion formed at a depth below the seafloor of up to a few hundreds of meters, and was buried to about 2400 to 5500 m at the deepest. This depth is consistent with the depth of zeolite formation in the rock matrix, as estimated from the geothermal gradient. Interpretation of geochemical analyses suggests that the gigantic concretion was formed over several decades. Our results indicate that even gigantic carbonate concretions form quite rapidly after marine sediment deposition during early diagenesis.</p>

    DOI: 10.5575/geosoc.2017.0039

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    J-GLOBAL

  212. Comparing the Sr-87/Sr-86 of the bulk and exchangeable fractions in stream sediments: Implications for Sr-87/Sr-86 mapping in provenance studies Reviewed

    Yuka Jomori, Masayo Minami, Akiko Sakurai-Goto, Atsuyuki Ohta

    APPLIED GEOCHEMISTRY   Vol. 86   page: 70 - 83   2017.11

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    We are preparing a nationwide distribution map of strontium isotope ratio (Sr-87/Sr-86) in Japan, using stream sediment to obtain basic Sr-87/Sr-86 data for the provenance analysis of food production and archaeological substances. To clarify the effect of particle size on Sr-87/Sr-86 in stream sediments, we analyzed stream sediment from the Shigenobu River system in Matsuyama, Ehime Prefecture, Japan, where a variety of silicate-dominated lithologies, that is, several bedrocks of andesitic, granitic, and siliciclastic sedimentary rocks, are distributed. This paper reports elemental concentrations and Sr-87/Sr-86 in stream sediments for six particle-size fractions (1000-500, 500-300, 300-180, 180-125, 125-75, and &lt; 75 mu m). The results from stream sediments were compared with results from bedrock units and stream water over the catchment. The elemental concentrations in stream sediment tended to increase with decreasing particle size in all lithologies; however, Sr concentrations varied less than other elements across particle sizes. For most of the samples, Sr-87/Sr-86 varied by less than 0.001 among the six particle-size fractions, which was less than the variation among the different lithologies. Therefore, Sr-87/Sr-86 in the &lt; 180 mu m particle-size fraction, which is normally used in Japanese nationwide geochemical mapping, should be a reliable proxy for bedrock Sr-87/Sr-86. The Sr-87/Sr-86 values in water samples from the Shigenobu River system were lower and less variable than Sr-87/Sr-86 in the stream sediments, and they did not faithfully correspond to the watershed geology. The inconsistency may reflect selective dissolution of Sr from plagioclase. Interestingly, Sr-87/Sr-86 values of the exchangeable fraction of stream sediment in the &lt; 180 mu m fraction were strongly correlated with Sr-87/Sr-86 of stream water samples. Because Sr-87/Sr-86 in plant and animal bodies reflects that of their water sources, the exchangeable fraction of stream sediment may be a useful proxy for geochemical provenance in Japan instead of stream water. (C) 2017 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.apgeochem.2017.09.004

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  213. 初期続成過程における巨大球状炭酸塩コンクリーション形成 Reviewed

    村宮悠介・吉田英一・山本鋼志・南 雅代

    地質学雑誌   Vol. 11   page: 939-952   2017

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  214. Grain-size variations in <sup>87</sup>Sr/<sup>86</sup>Sr and elemental concentrations of stream sediments in a granitic area: Fundamental study on <sup>87</sup>Sr/<sup>86</sup>Sr spatial distribution mapping

    Minami Masayo, Jomori Yuka, Suzuki Kazuhiro, Ohta Atsuyuki

    GEOCHEMICAL JOURNAL   Vol. 51 ( 6 ) page: 469 - 484   2017

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    <p>The strontium isotope ratio (<sup>87</sup>Sr/<sup>86</sup>Sr) is often used to identify the origin of agricultural products and the movement of ancient people, and a nationwide <sup>87</sup>Sr/<sup>86</sup>Sr distribution map would greatly assist such studies. The Geological Survey of Japan (GSJ), AIST has already created nationwide element distribution maps using the <180 μm fraction of stream sediments, but this grain size fraction may not necessarily be suitable for mapping the <sup>87</sup>Sr/<sup>86</sup>Sr isotopic ratio. Therefore, this study investigated the effect of grain size on elemental concentrations and <sup>87</sup>Sr/<sup>86</sup>Sr ratios in stream sediments and compared their values with those of the source rocks. The stream sediments studied were collected from the granitic drainage basin of the Yahagi and Yada rivers in Aichi Prefecture, central Japan. The elemental concentrations and <sup>87</sup>Sr/<sup>86</sup>Sr ratios of five fractions in the size range 1000–75 μm from the stream sediments of the Yahagi River tributaries varied with the grain size, and the variations corresponded to the heterogeneity of the mineral compositions in each fraction. The difference in the elemental concentrations and <sup>87</sup>Sr/<sup>86</sup>Sr ratios among the sampling points was smallest in the 300–75 μm fractions, which showed <sup>87</sup>Sr/<sup>86</sup>Sr and <sup>87</sup>Rb/<sup>86</sup>Sr values that were closest to those of the source rocks. The coarser (>300 μm) and the fine (<75 μm) fractions of the stream sediments showed systematically higher <sup>87</sup>Rb/<sup>86</sup>Sr and lower <sup>87</sup>Sr/<sup>86</sup>Sr ratios than the Rb-Sr mineral isochron for the source rock, and the result suggests that 1) these fractions are enriched in K- and Rb-rich minerals such as K-feldspar, biotite, and hornblende; and 2) Sr is lost relative to Rb because of weathering processes. Furthermore, temporal variations in <sup>87</sup>Sr/<sup>86</sup>Sr of the <180 μm stream sediments collected at a fixed sampling site in the Yada River were 0.001, which is smaller than the variations associated with grain size seen in the <sup>87</sup>Sr/<sup>86</sup>Sr values in the granitic study area. Consequently, we concluded that, in granite areas, the <180 μm fraction of the stream sediments can be used for <sup>87</sup>Sr/<sup>86</sup>Sr mapping, implying that a nationwide <sup>87</sup>Sr/<sup>86</sup>Sr map can be made using sediment samples with a grain size of less than 180 μm.</p>

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  215. A distinctive chemical composition of the tektites from Thailand and Vietnam, and its geochemical significance Reviewed

    Lee, S-G., Tanaka, T., Asahara, Y., Minami, M.

    Jour. Petrol. Soc. Korea   Vol. 26   page: 281-295   2017

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  216. <sup>14</sup>C Ages and the Significance of <i>Porites</i>, Beached on the Eastern Part of Maibah Beach, Southeast of Miyako Island, Okinawa Prefecture

    OMOTO Kunio, MINAMI Masayo

    Quarterly Journal of Geography   Vol. 69 ( 3 ) page: 119 - 127   2017

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    <p>Maibah beach is located between Higashihenna promontory and Miyato-zaki (promontory), southeast of Miyako Island. Along the sandy beach, beachrock develops intertidal zone. A large boulder lying on the eastern part of the beach has been recognized as a fossil <i>Tridacna gigas</i>. We collected two samples from the boulder in order to determine the age of its outer layer, and noticed that the cross section was different from <i>Tridacna gigas</i>. The samples indicated obviously a characteristic of coralline structure. Then identification and radiocarbon dating of the samples were performed.</p><p>The results show that coral is <i>Porites</i> sp. and probably <i>in situ</i>, and that it was transported from lagoon and beached on the shore, judged from the field observation. The calibrated ages were 1626 cal AD and 1679 cal AD, respectively. It is considered that <i>Porites</i> had transported and beached on the shore by huge tsunamis or high waves of typhoon. Unfortunately there was no huge typhoon record, and then we tried to correlate calibrated age of <i>Porites</i> with historical tsunami and earthquake records. According to historical record, Miyako Islands were attacked by strong earthquake of AD 1667 which probably caused tsunami. An average calibrated age of <i>Porites</i> (1653±23 cal AD) coincides with AD 1667 earthquake tsunami with a margin of statistical error. However, age of removed soft outer layers of <i>Porites</i> strongly suggests that it was transported from its original habitat to the present location not only by AD 1667 earthquake tsunami but also by AD 1771 Meiwa Tsunami.</p>

    DOI: 10.5190/tga.69.3_119

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  217. Diagenetic alteration of bone apatite revealed by stable and radiogenic Strontium isotope analysis

    Wakaki Shigeyuki, Mukumoto Hikari, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 64 ( 0 ) page: 14 - 14   2017

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    DOI: 10.14862/geochemproc.64.0_14

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  218. A donation of textbook on geosciences to University of Kurdistan, Iran.

    Tanaka Tsuyoshi, Asahara Yoshihiro, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 64 ( 0 ) page: 124 - 124   2017

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    DOI: 10.14862/geochemproc.64.0_124

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  219. The age and composition of lake tufa from the margins of Uyuni salt basin, Bolivia International coauthorship

    Natsuki Hanamoto, Wallis Simon, Sagiya Takesi, Minami Masayo, Shen Chuan-chou, Huang Chun-yuan

    Annual Meeting of the Geological Society of Japan   Vol. 2017 ( 0 ) page: 443   2017

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    DOI: 10.14863/geosocabst.2017.0_443

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  220. Change of the crystallinity of bone carbonate hydroxyapatite by heating: Basic research for accurate radiocarbon dating and diet analysis of carbonate hydroxyapatite in cremated bones

    Mukumoto Hikari, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 64 ( 0 ) page: 202 - 202   2017

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    DOI: 10.14862/geochemproc.64.0_202

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  221. CHANGES OF CHEMICAL STRUCTURE AND COMPOSITION OF CHARCOAL BY RADIOCARBON PRETREATMENTS: DECONTAMINATION BY ABA AND ABOx TREATMENTS Reviewed

    Shinji Tomiyama, Masayo Minami, Toshio Nakamura, Koichi Mimura, Hiroyuki Kagi

    RADIOCARBON   Vol. 58 ( 3 ) page: 565 - 581   2016.9

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    Charcoal is widely used for radiocarbon dating in archaeological and paleoenvironmental studies. Reliable C-14 dating requires appropriate chemical treatment to remove postdeposition contamination from the charcoal samples. This study assesses two pretreatments: acid-base-acid (ABA) and acid-base-oxidation with stepped combustion (ABOx-SC). In addition to C-14, the effects of the treatments on the chemical structure and composition of charcoal were studied using Fourier transform infrared spectroscopy (FTIR) and C/H/O elemental analysis. Samples of pine wood charred in the laboratory at 270, 300, 400, 500, and 600 degrees C, and environmental samples of charred pine wood from pyroclastic flow deposits in southern Kyushu, Japan, were tested. The laboratory-charred samples showed that NaOH treatment removed highly hydrophilic organic components derived from endogenous and exogenous organic materials in the samples and that oxidation treatment caused the oxidative degradation of molecules in samples starting from its edges. The ABA-treated environmental charcoal yielded younger C-14 dates than the ABOx-treated samples, probably owing to the effects of remaining organic contaminants bound to the edges of the aromatic molecular structures produced by the original pyrolysis. Meanwhile, it was found that ABA-SC treatment can reduce contaminants as effectively as ABOx-SC treatment. This implies that the stepped combustion (SC), not the chemical oxidation, is the key to reduce contaminant residue left after ABA and ABOx treatments. The results in this study indicate that the investigation of the structural and compositional changes of charcoal during its pretreatment is useful for assessment of the reliability of the C-14 ages.

    DOI: 10.1017/RDC.2016.29

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  222. 炭化物の14C-前処理過程の化学的解明−和歌山県根来寺坊院跡から出土した炭化米の分析− Reviewed

    冨山慎二・南 雅代・中村俊夫・金原正明

    考古学と自然科学   Vol. 72   page: 45 - 61   2016

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  223. Influence of Akiyoshi limestone bedrock on elemental concentrations and Sr isotopic ratio in stream sediments Reviewed

    Jomori Yuka, Ohta Atsuyuki, Minami Masayo

    Chikyukagaku   Vol. 50 ( 1 ) page: 11 - 27   2016

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    Chemical compositions and Sr isotopic ratio (<sup>87</sup>Sr/<sup>86</sup>Sr) of stream sediments collected from Akiyoshi-dai, where is underlain by a large-scale limestone bedrock, were measured to investigate the influence of limestone bedrocks on geochemical maps. The sediments were sieved with eight screen sizes, and their bulk and acetic acid soluble fractions were both analyzed. 50–100% of the total Ca was extracted by acid leaching from stream sediments in the catchment of Akiyoshi limestone, indicating that Ca exists mainly in carbonate materials. In contrast, only 5–10% and 15–45% of the total Sr were extracted from their coarse (>125 μm) and fine particles (<125 μm),respectively. Therefore, Sr exists dominantly in aluminosilicate minerals even in stream sediments originated from limestone bedrock. Because the acid extraction percentages of Ca and Sr increase exponentially below 125 μm of grain size, carbonate materials would be supplied by fine-grained particles from limestone bedrock. <sup>87</sup>Sr/<sup>86</sup>Sr ratios in the acid soluble fractions were systematically lower than those of the bulk fractions and comparable to <sup>87</sup>Sr/<sup>86</sup>Sr of Akiyoshi limestone. Although limestone bedrock apparently scarcely influence on Sr concentration and <sup>87</sup>Sr/<sup>86</sup>Sr of stream sediments, <sup>87</sup>Sr/<sup>86</sup>Sr of carbonate materials is successfully extracted from the bulk sediments using acetic acid-based extraction method.

    DOI: 10.14934/chikyukagaku.50.11

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  224. Possibility of the precipitation reconstruction using DCF change of speleothem

    Minami Masayo, Kato Tomomi, Tokumaru Makoto, Horikawa Keiji, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 ) page: 22   2016

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    DOI: 10.14862/geochemproc.63.0_22

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  225. 名古屋大学タンデトロンAMSシステムの現状(2014年度)

    中村俊夫, 南雅代, 小田寛貴, 池田晃子, 箱﨑真隆, 城森由佳, 太田友子, 西田真砂美, 池盛文数, 國田圭佑, 富山慎二, 椋本ひかり

    第17回AMSシンポジウム報告集     page: 25 - 29   2015.12

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  226. Seasonal variations of C-14 and delta C-13 for cave drip waters in Ryugashi Cave, Shizuoka Prefecture, central Japan Reviewed

    Masayo Minami, Tomomi Kato, Keiji Horikawa, Toshio Nakamura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 362   page: 202 - 209   2015.11

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    Speleothem C-14 has recently emerged as a potentially powerful proxy for hydrology changes in comparison with atmospheric C-14 calibration curve, rather than as a direct dating tool, apart from a time marker using bomb peak of C-14. Some possible causes for the relationship between speleothem C-14 content (or dead carbon fraction: DCF) and karst hydrology have been proposed, such as changes in temperature, precipitation, drip water flow dynamics, cave air ventilation, soil air pCO(2). In this study, we investigated seasonal variation in C-14 and delta C-13 of drip water in Ryugashi Cave, Shizuoka Prefecture, central Japan, to examine the causes of the C-14 and delta C-13 variations in a speleothem. The results show that different C-14 concentrations and delta C-13 values of drip water from the Ryugashi Cave, were exhibited at different sites of the Caves No. 1, No. 3, and No. 4, which have different temperature, air pCO(2), and flow paths. Further, the C-14 and delta C-13 of drip waters showed seasonal variations at all sites, which were lower in fall and winter, and higher in spring and summer, though the extent of the variations was different among the sites. The C-14 in drip waters tended to be correlated with the drip rates: C-14 tended to be higher in drip waters with higher drip rates, and also correlated with rainfall amount around the Ryugashi Cave, especially for the drip waters in Cave No. 3, which are considered to have simpler flow paths. The increase in rainfall amount could bring the increase in drip rate of drip water, and then the decrease in interaction between solution and karst, resulting in C-14 increase (DCF decrease) in drip water. Accordingly, the reconstruction of precipitation could be performed using C-14 variation in a speleothem formed by drip water with simple flow dynamics. (C) 2015 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2015.05.020

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  227. Early post-mortem formation of carbonate concretions around tusk-shells over week-month timescales Reviewed International coauthorship

    Hidekazu Yoshida, Atsushi Ujihara, Masayo Minami, Yoshihiro Asahara, Nagayoshi Katsuta, Koshi Yamamoto, Sin-iti Sirono, Ippei Maruyama, Shoji Nishimoto, Richard Metcalfe

    SCIENTIFIC REPORTS   Vol. 5   page: 1-7   2015.9

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    Carbonate concretions occur in sedimentary rocks of widely varying geological ages throughout the world. Many of these concretions are isolated spheres, centered on fossils. The formation of such concretions has been variously explained by diffusion of inorganic carbon and organic matter in buried marine sediments. However, details of the syn-depositional chemical processes by which the isolated spherical shape developed and the associated carbon sources are little known. Here we present evidence that spherical carbonate concretions (diameters. : 14 similar to 37 mm) around tusk-shells (Fissidentalium spp.) were formed within weeks or months following death of the organism by the seepage of fatty acid from decaying soft body tissues. Characteristic concentrations of carbonate around the mouth of a tusk-shell reveal very rapid formation during the decay of organic matter from the tusk-shell. Available observations and geochemical evidence have enabled us to construct a 'Diffusion-growth rate cross-plot' that can be used to estimate the growth rate of all kinds of isolated spherical carbonate concretions identified in marine formations. Results shown here suggest that isolated spherical concretions that are not associated with fossils might also be formed from carbon sourced in the decaying soft body tissues of non-skeletal organisms with otherwise low preservation potential.

    DOI: 10.1038/srep14123

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  228. Radiocarbon Dating of Charcoal Remains Excavated from Qalat Said Ahmadan.

    Minami, M. and Tomiyama, S.

      Vol. XXXVI   page: 53-57   2015

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  229. メソアメリカ南東部太平洋沿岸における先スペイン期製塩活動−エルサルバドル共和国ヌエバ・エスペランサ遺跡を中心に−. Reviewed

    市川 彰・南 雅代・八木宏明

    日本考古学論文   Vol. 40   page: 1-18   2015

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  230. 名古屋大学年代測定総合研究センター夏休み特別企画「年輪年代法体験学習」活動報告

    箱崎真隆, 中村俊夫, 榎並正樹, 増田公明, 南雅代, 池田晃子, 一木絵理, 佐藤桂, 太田友子, 西田真砂美, 田中敦子, 伊原由紀子, 城森由佳, 加藤ともみ, 早田葵, 冨山慎二, 國田圭佑

    名古屋大学加速器質量分析計業績報告書   Vol. XXV   2014.3

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  231. Sr and Nd isotopes on granitoids from eastern Inbi Intrusives, Inner Zone of Southwest Japan

    Sato Kei, Kamei Atsushi, Minami Masayo, Asahara Yoshihiro, Kato Takenori

    Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences   Vol. 2014 ( 0 ) page: 181   2014

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    In the present study, whole-rock analyses, and Sr and Nd isotope analyses for granitoids (Ningyo Toge Granite, Tottori Granite, and Sangenya Granodiorite) from eastern Inbi Intrusives were carried out in order to discuss the plutonic magma history of the San-in Belt, Inner Zone of Southwest Japan. Whole-rock chemical characteristics categorize these granitoids as I-type. Rb-Sr isochron age for six samples of Ningyo Toge granites is given as 66.1 +/- 5.0 Ma (1 sigma). Relationship of epsilon NdI vs. epsilon SrI suggests that the parental magma of the Ningyo Toge Granite is probably not linked to that of the Tottori Granite.

    DOI: 10.14824/jakoka.2014.0_181

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  232. Particle-size dependence of 87Sr/86Sr in stream sediments derived from granitic rocks

    Jomori Yuka, Minami Masayo, Suzuki Kazuhiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 ) page: 347   2014

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    DOI: 10.14862/geochemproc.61.0_347

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  233. Radiocarbon intercomparison of water samples treated by the different chemical preparation methods.

    Minami Masayo, A. Takahashi H., Aramaki Takafumi, Handa Hiroko, Itaki Sayuri, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 ) page: 121   2014

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    DOI: 10.14862/geochemproc.61.0_121

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  234. Comparison of radiocarbon ages of charcoal treated with different methods

    Tomiyama Shinji, Minami Masayo, Nakamura Toshio, Kagi Hiroyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 ) page: 244   2014

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    DOI: 10.14862/geochemproc.61.0_244

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  235. Perspective of Paleosciences

    Harada Naomi, Ohkouchi Naohiko, Minami Masayo, Seki Osamu, Okazaki Yusuke

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 ) page: 134   2014

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    DOI: 10.14862/geochemproc.61.0_134

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  236. Radiocarbon change for groundwater sample during the sample storage in laboratory

    Takahashi Hiroshi, Minami Masayo, Handa Hiroko, Aramaki Takafumi, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 ) page: 120   2014

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    DOI: 10.14862/geochemproc.61.0_120

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  237. The day when a fox disappeared from Sato-yama in Kodenosawa, Toyota, Aichi prefecture.

    Minami Masayo, Suzuki Kazuhiro, Nakamura Toshio, Ikeda Akiko

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 ) page: 245   2014

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    DOI: 10.14862/geochemproc.61.0_245

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  238. Spatial distribution of <sup>87</sup>Sr/<sup>86</sup>Sr ratios of stream sediments in Shikoku Island and the Kii Peninsula, Southwest Japan

    JOMORI YUKA, MINAMI MASAYO, OHTA ATSUYUKI, TAKEUCHI MAKOTO, IMAI NOBORU

    GEOCHEMICAL JOURNAL   Vol. 47 ( 3 ) page: 321 - 335   2013.6

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    Geochemical mapping of <sup>87</sup>Sr/<sup>86</sup>Sr ratios in Shikoku Island and the Kii Peninsula of Southwest Japan was performed using 233 samples of stream sediments (<180 μm). The spatial distribution of <sup>87</sup>Sr/<sup>86</sup>Sr ratios successively increases from northern to southern geological units, with a gap at the Median Tectonic Line (MTL). In the Inner Zone divided by the MTL, a zone with Cretaceous granitoid rocks of the Ryoke Belt and sedimentary rocks of the Izumi Group, the <sup>87</sup>Sr/<sup>86</sup>Sr ratios are measured at ~0.710. In the Outer Zone, a zone with Cretaceous metamorphic rocks of the Sanbagawa Belt and Jurassic to Miocene accretionary complexes of the Chichibu Belt and Shimanto Belts, the <sup>87</sup>Sr/<sup>86</sup>Sr ratios tend to fall in the range from 0.706 to 0.715, tend to increase from north to south, and are highest in the youngest accretionary complex of the Southern Shimanto Belt. The <sup>87</sup>Rb/<sup>86</sup>Sr-<sup>87</sup>Sr/<sup>86</sup>Sr plots for stream sediments more clearly reveal the differences and similarities of their bedrocks, such as the different trends among the stream sediments of the Inner and Outer Zones. Samples collected from the Inner Zone show almost the same <sup>87</sup>Rb/<sup>86</sup>Sr-<sup>87</sup>Sr/<sup>86</sup>Sr field as their source rocks, while most of the samples derived from accretionary complexes in the Outer Zone are plotted around a mixing line of older continental detritus and igneous-rock-derived materials. In light of the other geochemical characteristics observed, particularly the REE chemical features of the stream sediments and zircon ages in the basemental sedimentary rocks, the accretionary complexes in the Outer Zone may be mainly formed from the same source rocks, namely, igneous-rock-derived materials and continental detrital materials with different mixing ratios and a larger ratio of continental materials in the Southern Shimanto Belt. This study indicates that <sup>87</sup>Sr/<sup>86</sup>Sr ratios of stream sediments strongly reflect the isotopic composition of the source rocks and are very useful for distinguishing the various geological and geochemical settings of the source rocks.

    DOI: 10.2343/geochemj.2.0248

    Scopus

    CiNii Research

  239. 名古屋大学タンデトロンAMS14Cシステムの現状と利用(2012)

    中村 俊夫, 南 雅代, 小田 寛貴, 池田 晃子, 一木 絵理, 伊藤 一充, 宮田 佳樹, 箱崎 真隆, 太田 友子, 西田 真砂美, 池盛 文数, 城森 由佳, 加藤 ともみ, 早田 葵, 長谷 和磨, 冨山 慎二, Nakamura Toshio, Minami Masayo, Oda Hirotaka, Ikeda Akiko, Hitoki Eri, Itoh Kazumi, Hakozaki Masataka, Miyata Yoshiki, Ohta Tomoko, Nishida Masami, Ikemori Kazufumi, Jyomori Yuka, Kato Tomomi, Soda Aoi, Hase Kazuma, Tomiyama Shinji

    名古屋大学加速器質量分析計業績報告書   Vol. 24   page: 13 - 24   2013.3

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    An AMS system (Model 4130-AMS) dedicated to14C measurements, built by High Voltage Engineering Europe (HVEE), B.V., The Netherlands, was delivered to Nagoya University in 1996/97. Acceptance tests of its performance on carbon isotope measurements were completed in January of 1999, and routine measurements began in mid-2000. Since completion of the acceptance tests in early 1999, we have encountered a lot of troubles with the machine, particularly in 2002. Since the end of 2002, the machine has worked relatively well, expect for minor problems. The standard deviation (one sigma) of the 14C/12C ratio is around ±0.3% to ±0.4% (a bit larger than the uncertainty of about ±0.3% calculated from 14C counting statistics) and that of the corresponding 13C/12C ratio is ±0.03% to ±0.07% , as are tested for HOxII targets. The number of targets measured was 330, 1430, 2077, 1003, 1,979, 1679, 1772, 1115, 1339, 866, 1300, 1701, 1449, 1634 in each year from 1999 to 2012, respectively, and total number of targets measured by the end of 2012 is 19,674. The Tandetron AMS system worked well in the early half of 2012, with only minor failures. In September, a noise became large from the 12C-beam chopper, in the recombinator system, owing to the problem of a ferro-fluid-feedthrough, which had been used since June, 2008. We have replaced the ferro-fluid feedthrough to a new one. Soon after the chopper problem, the turbo molecular pump (TMP) in the recombinator system was damaged with the bearing of the rotating fan. We sent the pump to the supplier for repair. Because of the broken bearing, the rotating fan was seriously damaged, and we must purchase a new one. On 24th October, a large noise was generated from inside of the accelerator tank. We decided to open the tank and check the parts inside. The problem was also a bearing mounted in the power generator that supplies electric power to a terminal turbo-pump mounted inside the tank. We can get a new generator in a few weeks, because HVEE possessed one for spare by chance. We purchased it and replaced the damage generator on November. After tank opening, inner surfaces of the accelerator tank absorbed water in the atmosphere, we spent much time to remove water vapor from SF6 insulator gas. We had experienced twice of high voltage sparks, but no detectable damage occurred with the accelerator system. We could have restarted 14C measurements at around mid of December. Owing to these difficulties with the machine, the total number of graphite targets measured was 1634 in 2012, smaller in number than that in 2010 (1701), but a larger than in 2011 (1449).
    名古屋大学年代測定総合研究センターシンポジウム報告

    DOI: 10.18999/sumrua.24.13

  240. Long-term stability of fracture systems and their behaviour as flow paths in uplifting granitic rocks from the Japanese orogenic field

    H. Yoshida, R. Metcalfe, M. Ishibashi, M. Minami

    GEOFLUIDS   Vol. 13 ( 1 ) page: 45-55 - 55   2013.2

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    In granitic rocks, fracture networks typically provide pathways for groundwater flow and solute transport that need to be understood to assess the long-term performance of deep underground storage or disposal facilities such as radioactive waste repositories. However, relatively little is known about the long-term processes of fracturing and/or the longevity of flow paths (FP) in granitic rocks distributed within orogenic belts. To clarify these issues, Japanese plutons of different ages and in situ fractures in granite at the Mizunami Underground Research Laboratory (MIU) located in central Japan were studied. Detailed structural characterization and geochemical analysis of in situ fracture fillings sampled from a depth of 300m were carried out to clarify the relationship between fracturing and mineral infilling processes. Different plutons show identical episodes of fracturing and fracture filling, consisting of: brittle tensile fracturing, due to decreasing temperature through the ductilebrittle transition after plutonic intrusion (Stage I); relatively rapid uplifting (ca. a few mm/year) accompanied by hydrothermal water circulation, which produced uncrushed layered mineral fillings (Stage II); and a period of low-temperature meteoric water circulation following exposure after uplift (Stage III). The parageneses of carbonate mineral fracture fillings and their carbon isotopic compositions (14C, 13C) show that there were distinct episodes of carbonate mineral precipitation during the rapid uplifting of a pluton. The carbonate minerals that formed during each episode incorporated carbon from a distinct source. The evolution of fillings identified here enables development of a specific model of fracturing and persistence of fluid-conducting systems in the plutons of the orogenic field.

    DOI: 10.1111/gfl.12008

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    Scopus

  241. Small-mass AMS radiocarbon analysis at Nagoya University Reviewed

    Masayo Minami, Tomomi Kato, Yoshiki Miyata, Toshio Nakamura, Quan Hua

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 294   page: 91 - 96   2013.1

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    As part of the ongoing development at the AMS facility of the Center for Chronological Research at Nagoya University to radiocarbon (C-14) analyze samples smaller than 0.5 mg carbon (mgC), a compact graphitization manifold has been built. Tests with various reference materials show it performs well for samples as small as 0.1 mgC. Preparation with this new system is compared with the performance of the older protocol for regular-sized samples. Furthermore, it is shown that the addition of Cu and Ag before and stepwise heating during sealed-tube combustion of samples with high S content improve the degree of conversion to CO2 without having to resort to special purification measures such as the use of Co3O4 + Ag reagent and an n-pentane/LN2 trap before graphitization. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2012.02.036

    Web of Science

    Scopus

  242. Constraint on radiocarbon age correction in Lake Biwa environment from the middle to late Holocene Reviewed

    Y. Miyata, M. Minami, S. Onbe, M. Sakamoto, T. Nakamura, M. Imarnura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 294   page: 452 - 458   2013.1

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    Using data from previous studies and newly collected data, we compared the measured radiocarbon ages of molluscan shells, common reed (Phragmites australis) and pine needles (Pinus thunbergii) collected in 1966, 1970, 1990 and 2008 at Lake Biwa in Japan, and of archaeological samples, to examine radiocarbon reservoir effects at Lake Biwa. We also tested for differences in the radiocarbon reservoir effect between species and locations in the lake. The effects of nuclear bomb tests conducted in the 1950s and 1960s are clear, the offset between atmospheric C-14 and the Lake Biwa freshwater C-14 is larger for this period because the atmospheric C-14 is so high. The semiclosed Lake Biwa system is in dynamic equilibrium with the atmosphere, resulting in the C-14 content of the water following the changes in atmospheric C-14 caused by nuclear testing. The shells collected after 1990 had radiocarbon ages that were 330-450 C-14 years older than those of the coeval atmosphere. The apparent differences in radiocarbon age (about 300 C-14 years) between shell fossils and wood samples excavated from the same layer of the submerged Awazu shell midden at Lake Biwa suggest that the radiocarbon reservoir effect also existed in the middle Holocene (the Middle Jomon period, about 5000 years ago). Because the present-day average residence time of Lake Biwa water is 3-6 years, its direct influence on the radiocarbon reservoir effect is small, which suggests that old carbon has been supplied into Lake Biwa. (C) 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2012.09.027

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  243. Radiocarbon dating of VIRI bone samples using ultrafiltration

    Masayo Minami, Kana Yamazaki, Takayuki Omori, Toshio Nakamura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 294   page: 240 - 245   2013.1

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    Ultrafiltration can effectively remove low-molecular-weight (LMW) contaminants from bone gelatin to extract high-molecular-weight (HMW) proteins that are derived from original bone collagen, though it cannot remove HMW collagen crosslinked with humic acids. Therefore, ultrafiltration is often used to obtain more accurate C-14 dates of bones. However, ultrafiltration may introduce new contaminants to bone gelatins, mainly from ultrafilters used. To study the effects of ultrafiltration on C-14 age, we analyzed the C/N ratio, delta C-13(PDB) and delta N-15(AIR) values, and C-14 ages of acid-soluble bone collagen obtained by decalcification, gelatin extracted from acid-insoluble bone collagen, and the HMW gelatin and LMW fractions produced during ultrafiltration of the extracted gelatin. Bone samples from the Fifth International Radiocarbon Intercomparison (VIRI) were used: VIRI-E (mammoth), -F (horse), -G (human), and -I (whale).
    In this study, carbon and nitrogen content and gelatin yields were used to evaluate collagen preservation in the VIRI bone samples. Radiocarbon ages, delta C-13(PDB) and delta N-15(AIR) values of unfiltered and HMW gelatins were obtained and compared with the published consensus values. The LMW fraction was found to exhibit different values from those of the other fractions, indicating the possible presence of extraneous contamination. The Vivaspin (TM) 6 ultrafilters used in this study were analyzed and radiocarbon dated both before and after cleaning. We present evidence to suggest that LMW fraction contaminants could be derived from the ultrafilters rather than humic substances. Excessively long ultrafiltration time was suspected to have contaminated the bone samples with material from the ultrafilter, because those samples exhibited older C-14 ages than did those filtered for shorter durations. The results in this study indicate that C-14 ages of unfiltered gelatin extracted from well-preserved bones can be sufficiently accurate, and that care should be taken not to contaminate bone gelatin during ultrafiltration. Additional studies investigating bones with different degrees of degradation are needed to determine the effectiveness of ultrafiltration for accurate C-14 dating when the collagen is not so well preserved. (C) 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2012.06.016

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    Scopus

  244. エル・サルバドル共和国から出土した先スペイン期埋葬人骨の同位体分析 Reviewed

    南 雅代・市川 彰・坂田 健・森田 航・伊藤伸幸

    考古学と自然科学   Vol. 64   page: 1-25   2013

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  245. Ultrafiltration pretreatment for 14C dating of fossil bones from archaeological sites in Japan Reviewed

    Minami, M., Sakata, K., Takigami, M. and Nakamura, T.

    Radiocarbon   Vol. 55   page: 481-490   2013

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  246. Less impact of limestone bedrock on elemental concentrations in stream sediments -Case study of Akiyoshi area- Reviewed

    Ohta, A. and Minami, M.

    Bulletin of the Geological Survey of Japan   Vol. 64 ( 5/6 ) page: 121-138   2013

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  247. 骨試料の年代測定

    南 雅代

    フィッション・トラックニュースレター   Vol. 26   page: 76-79   2013

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  248. アミノ酸ラセミ化法を用いた骨遺物の年代決定 Invited

    南 雅代

    新学術領域研究ニュースレター   Vol. 2   page: 3-4   2013

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  249. Start on RICE-W (Radiocarbon Intercomparison on Chemical Experiments, Water series) project

    MInami Masayo, Aramaki Takafumi, Takahashi Hiroshi, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 ) page: 101   2013

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    DOI: 10.14862/geochemproc.60.0.101.0

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  250. Strontium isotope ratio (<sup>87</sup>Sr/<sup>86</sup>Sr) of stream sediments classified by particle size in Akiyoshi limestone area

    Jomori Yuka, Minami Masayo, Ohta Atsuyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 ) page: 61   2013

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    DOI: 10.14862/geochemproc.60.0.61.0

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  251. Seasonal variations of stable and radiocarbon isotope ratios for total carbon in PM<SUB>2.5</SUB> at Fukuoka city

    Soda Aoi, Ikemori Fumikazu, Higo Hayato, Nakajima Daisuke, Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 ) page: 112   2013

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    近年、大気粉塵中の炭素粒子の発生源を推定する方法の一つとして、&lt;SUP&gt;14&lt;/SUP&gt;C濃度測定が注目されている。&lt;SUP&gt;14&lt;/SUP&gt;C濃度により、炭素成分の起源は化石燃料起源とバイオマス起源に分けられ、実際の粉塵試料に対し&lt;SUP&gt;14&lt;/SUP&gt;C濃度測定を行うことで、この2つの起源の寄与率が推定できる。また、δ&lt;SUP&gt;13&lt;/SUP&gt;Cも発生源特定の手がかりとして有効と考えられる。偏西風の風下に位置する福岡は、アジア大陸からの輸送による影響を受けやすい地点であるため、福岡の大気中微小粒子状物質に対し&lt;SUP&gt;14&lt;/SUP&gt;C濃度測定およびδ&lt;SUP&gt;13&lt;/SUP&gt;C測定を行うことは、近隣での発生および長距離輸送の実態解明につながると考えられる。本発表では、2012年度に福岡市で観測されたPM&lt;SUB&gt;2.5&lt;/SUB&gt;中全炭素(TC)における&lt;SUP&gt;14&lt;/SUP&gt;C濃度およびδ&lt;SUP&gt;13&lt;/SUP&gt;Cの通年の挙動について報告する。

    DOI: 10.14862/geochemproc.60.0.112.0

    CiNii Research

  252. Freshwater reservoir effect at Lake Biwa: Effect of radiocarbon dating in archaeological samples

    Miyata Yoshiki, Aramaki Takafumi, Minami Masayo, Ohta Tomoko, Onbe Shin, Sakamoto Minoru, Imamura Mineo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 ) page: 226   2013

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    本研究では,琵琶湖水が淡水リザーバー年代を示す原因を説明するために,湖水に対する古い炭素源の寄与を琵琶湖のシンプルな水理構造を利用してモデル計算を試みた。さらに,伊吹山系の湧水や姉川など河川水のDIC,DI14C濃度を測定し, Dead carbon sourceである伊吹山,霊仙山などの石灰岩地帯を起源とする河川水,地下水などから供給される古い炭素の影響を評価した。 豊富な魚介類や淡水を利用できるため,琵琶湖周辺では,先史時代から人々の生活が営まれていたことが知られている(水中遺跡は100ヶ所以上)。琵琶湖の水産資源を利用していた当時の(人間を含む)動物が,淡水リザーバー効果の影響を強く受けていたことが示唆される。発表では,現生生態試料を用いて,貝殻と(可食部である)身の炭素年代差,代表的な湖のリザーバー年代も含めて,考古学試料の炭素年代測定に関する淡水リザーバー効果の影響に関しても議論する。

    DOI: 10.14862/geochemproc.60.0.226.0

    CiNii Research

    J-GLOBAL

  253. 名古屋大学タンデトロンAMSシステムの現状(2012年度)

    中村俊夫, 南雅代, 小田寛貴, 池田晃子, 一木絵理, 伊藤一充, 宮田佳樹, 箱崎真隆, 太田友子, 西田真砂美, 池盛文数, 城森由佳, 加藤ともみ, 早田葵, 長谷和磨, 冨山慎二

    第15回AMSシンポジウム報告集     2013

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  254. 名古屋大学AMS14C測定の現状と利用(2012)

    中村俊夫, 南雅代, 小田寛貴, 池田晃子, 一木絵理, 伊藤一充, 宮田佳樹, 箱崎真隆, 太田友子, 西田真砂美, 池盛文数, 城森由佳, 加藤ともみ, 早田葵, 長谷和磨

    第25回タンデム加速器及びその周辺技術の研究会報告集     page: 11 - 14   2013

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  255. Spatial distribution of Sr-87/Sr-86 ratios of stream sediments in Shikoku Island and the Kii Peninsula, Southwest Japan Reviewed

    Yuka Jomori, Masayo Minami, Atsuyuki Ohta, Makoto Takeuchi, Noboru Imai

    GEOCHEMICAL JOURNAL   Vol. 47 ( 3 ) page: 321 - 335   2013

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    Geochemical mapping of Sr-87/Sr-86 ratios in Shikoku Island and the Kii Peninsula of Southwest Japan was performed using 233 samples of stream sediments (&lt;180 mu m). The spatial distribution of Sr-87/Sr-86 ratios successively increases from northern to southern geological units, with a gap at the Median Tectonic Line (MTL). In the Inner Zone divided by the MTL, a zone with Cretaceous granitoid rocks of the Ryoke Belt and sedimentary rocks of the Izumi Group, the Sr-87/Sr-86 ratios are measured at similar to 0.710. In the Outer Zone, a zone with Cretaceous metamorphic rocks of the Sanbagawa Belt and Jurassic to Miocene accretionary complexes of the Chichibu Belt and Shimanto Belts, the Sr-87/Sr-86 ratios tend to fall in the range from 0.706 to 0.715, tend to increase from north to south, and are highest in the youngest accretionary complex of the Southern Shimanto Belt.
    The Rb-87/Sr-86-Sr-87/Sr-86 plots for stream sediments more clearly reveal the differences and similarities of their bedrocks, such as the different trends among the stream sediments of the Inner and Outer Zones. Samples collected from the Inner Zone show almost the same Rb-87/Sr-86-Sr-87/Sr-86 field as their source rocks, while most of the samples derived from accretionary complexes in the Outer Zone are plotted around a mixing line of older continental detritus and igneous-rock-derived materials. In light of the other geochemical characteristics observed, particularly the REE chemical features of the stream sediments and zircon ages in the basemental sedimentary rocks, the accretionary complexes in the Outer Zone may be mainly formed from the same source rocks, namely, igneous-rock-derived materials and continental detrital materials with different mixing ratios and a larger ratio of continental materials in the Southern Shimanto Belt. This study indicates that Sr-87/Sr-86 ratios of stream sediments strongly reflect the isotopic composition of the source rocks and are very useful for distinguishing the various geological and geochemical settings of the source rocks.

    Web of Science

  256. ストロンチウム同位体比を用いた過去の人類の移動の解明 Invited Reviewed

    南 雅代

    化学と教育   Vol. 60   page: 472-473   2012

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  257. 14C年代測定のための骨試料調製法

    南 雅代・坂田 健・市川 彰・伊藤伸幸

    名古屋大学加速器質量分析計業績報告書,   Vol. XXIII   page: 185-189   2012

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  258. 微少量グラファイト化ラインの検討.

    加藤ともみ・南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 76-85   2012

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  259. 北海道利尻島の泥炭湿地に飛来する鉛の供給源の変遷.

    河野麻希子・谷水雅治・浅原良浩・南 雅代・細野高啓・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 138-148   2012

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  260. アミノ酸組成ならびに14C年代に関する同一古人骨の部位による比較.

    坂田 健・瀧上 舞・南 雅代・中村俊夫・長岡朋人・平田和明

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 86-96   2012

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  261. 深部花崗岩中の透水性亀裂と充填鉱物-産状と形成プロセス-.

    吉田英一・石橋正祐紀・南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 54-56   2012

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  262. Radiocarbon dating of human skeletons of medieval archaelogical sites in Kamakura, Japan: were they killed by Nitta Yoshisada's attack on Kamakura in AD 1333? Reviewed

    Minami, M., Nakamura, T., Nagaoka, T. and Hirata, K.

    Radiocarbon   Vol. 54   page: 599-613   2012

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  263. C-14 DATING HUMAN SKELETONS FROM MEDIEVAL ARCHAELOGICAL SITES IN KAMAKURA, JAPAN: WERE THEY VICTIMS OF NITTA YOSHISADA'S ATTACK?

    Minami M., Nakamura T., Nagaoka T., Hirata K.

    RADIOCARBON   Vol. 54 ( 3-4 ) page: 599 - 613   2012

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  264. Strontium isotope ratios of rice -Relationship between the values of rice and geology of its growth-

    Hase Kazuma, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 ) page: 234   2012

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    DOI: 10.14862/geochemproc.59.0.234.0

    CiNii Research

  265. Difference of 14C age and 210Pb age of a peat core from Rishiri Island, northern Japan

    Kono Makiko, Minami Masayo, Tanimizu Masaharu, Asahara Yoshihiro, Hosono Takanori, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 ) page: 218   2012

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    DOI: 10.14862/geochemproc.59.0.218.0

    CiNii Research

  266. Spatial distribution of strontium isotope ratios (87Sr/86Sr) using stream sediments collected from Hokkaido, Japan

    Jomori Yuka, Minami Masayo, Ohta Atsuyuki, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 ) page: 60   2012

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    DOI: 10.14862/geochemproc.59.0.60.0

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  267. The Analysis to Elucidate the Pathogenesis of Type 1 Long QT Syndrome using Disease-specific Induced Pluripotent Stem Cells

    MINAMI Masayo

    CHEMISTRY & EDUCATION   Vol. 60 ( 11 ) page: 472 - 473   2012

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    Language:Japanese   Publisher:The Chemical Society of Japan  

    DOI: 10.20665/kakyoshi.60.11_472

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  268. A new graphitization system for small-mass AMS-<SUP>14</SUP>C measurements at Nagoya University

    Kato Tomomi, Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 ) page: 132   2012

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    DOI: 10.14862/geochemproc.59.0.132.0

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  269. Reconstruction of paleo diet in pottery excavated from coastal archaeological site at latter half of Jomon period.

    Miyata Yoshiki, Horiuchi Akiko, Nakamura Kentaro, Kuronuma Yasuko, Masuyama Takayuki, Minami Masayo, Nakamura Toshio, Evershed Richard

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 ) page: 333   2012

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    本研究では,縄文時代後半期,海産物に依存していた海岸近くに暮らしていた人々の生活を,遺跡出土土器に残存する有機物組成を用いて復元することを目的とする。愛知県渥美半島にある保美貝塚から出土した土器残存有機物の脂質組成から,土器で海産物を含む食材を煮炊きしていた可能性を強く支持する結果が得られた。この結果は,土器付着炭化物の年代測定結果から海洋リザーバー効果が検出され,付着炭化物の安定同位体組成から,海獣や海産魚類を調理した可能性が示唆されたことも調和的である。

    DOI: 10.14862/geochemproc.59.0.333.0

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  270. Nationwide geochemical map of strontium isotope ratios using stream sediments -A basic data for determination of geographic origin of crops-

    Minami Masayo, Jomori Yuka, Hase Kazuma, Ohta Atsuyuki, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 ) page: 331   2012

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    DOI: 10.14862/geochemproc.59.0.331.0

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  271. C-14 DATING HUMAN SKELETONS FROM MEDIEVAL ARCHAELOGICAL SITES IN KAMAKURA, JAPAN: WERE THEY VICTIMS OF NITTA YOSHISADA'S ATTACK?

    Minami M, Nakamura T, Nagaoka T, Hirata K

    RADIOCARBON   Vol. 54 ( 3-4 ) page: 599 - 613   2012

  272. Carbon isotope components of aerosols in Nagoya and Fukuoka in spring 2011 Reviewed

    Fumikazu Ikemori, Hayato Higo, Daisuke Nakajima, Aoi Soda, Masayo Minami, Toshio Nakamura

    29TH SYMPOSIUM ON AEROSOL SCIENCE AND TECHNOLOGY, 2012     page: 45 - 46   2012

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    Total suspended particles (TSP) were collected in spring (2011) in Nagoya and Fukuoka. The samples were analyzed for contents of inorganic ions, organic carbon (OC), and elemental carbon (EC), and delta C-13 value of total carbon. The results demonstrate that the calcium ion concentration and delta C-13 value of total carbon increased during the Asian dust storm events. In May 3, the ration of carbon derived from carbonate in total carbon was at maximum, and delta C-13 of total carbon showed the largest value. The results indicate that carbon derived from carbonate had been reacted with acidic species (such as H2SO4, HNO3 etc...) in the atmosphere during a long-range transport.

    Web of Science

  273. Difference in radiocarbon ages of carbonized material from the inner and outer surfaces of pottery from a wetland archaeological site

    MIYATA Yoshiki, MINAMI Masayo, ONBE Shin, SAKAMOTO Minoru, MATSUZAKI Hiroyuki, NAKAMURA Toshio, IMAMURA Mineo

    Proceedings of the Japan Academy, Series B   Vol. 87 ( 8 ) page: 518 - 528   2011.10

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    AMS (Accelerator Mass Spectrometry) radiocarbon dates for eight potsherds from a single piece of pottery from a wetland archaeological site indicated that charred material from the inner pottery surfaces (5052 ± 12 BP; <i>N</i> = 5) is about 90 <sup>14</sup>C years older than that from the outer surfaces (4961 ± 22 BP; <i>N</i> = 7). We considered three possible causes of this difference: the old wood effect, reservoir effects, and diagenesis. We concluded that differences in the radiocarbon ages between materials from the inner and outer surfaces of the same pot were caused either by the freshwater reservoir effect or by diagenesis. Moreover, we found that the radiocarbon ages of carbonized material on outer surfaces (soot) of pottery from other wetland archaeological sites were the same as the ages of material on inner surfaces (charred food) of the same pot within error, suggesting absence of freshwater reservoir effect or diagenesis.<BR><BR>(Communicated by Ikuo KUSHIRO, M.J.A.)

    DOI: 10.2183/pjab.87.518

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    Scopus

    PubMed

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  274. エル・サルバドル共和国出土人骨の14C年代とストロンチウム同位体比.

    南 雅代・坂田 健・市川 彰・伊藤伸幸

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 106-115   2011

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  275. 段階的加熱を用いた14C試料調製.

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 225-228   2011

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  276. 炭素・酸素同位体分析による実構造物中のコンクリートの中性化進行評価.

    浅原良浩・南 雅代・丸山一平・吉田英一・田中 剛名古屋大学加速器質量分析計業績報告書

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 140-151   2011

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  277. 里山からキツネが消えた日 −一匹のキツネのC・N・Sr同位体比測定−.

    鈴木和博・中村俊夫・南 雅代・池田晃子

    海洋化学研究   Vol. 24   page: 64-72   2011

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  278. 里山からキツネが消えた日−豊田市小手沢町の地蔵堂から見つかったキツネの遺骸−.

    鈴木和博・中村俊夫・南 雅代・池田晃子

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 121-134   2011

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  279. 14C測定による粗大枯死材の枯死年および分解速度の推定

    菱沼卓也・南 雅代・伊藤公一・大園享司

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 72-81   2011

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  280. 見かけ上の炭素年代差を用いた環境解析 −淡水湖産貝,骨試料を例として−.

    宮田佳樹・南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 49-54   2011

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  281. Radiocarbon dating of carbonized material adhering to pottery -The difference of Carbon-14 age between inner and outer surface of the pottery in wetland archaeological site. Reviewed

    Miyata, Y., Minami, M., Onbe, S., Sakamoto, M., Nakamura, T. and Imamura, M.

    Proc. Japan Acad.   Vol. 87B   page: 518-528   2011

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  282. Reaction of silicate minerals with released CO<sub>2</sub> by inorganic precipitations of marine carbonate in sandstone

    MINAMI MASAYO, TANAKA TSUYOSHI, TAKEUCHI MAKOTO, MITO SAEKO

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 185 - 185   2011

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    <sup>87</sup>Sr/<sup>86</sup>Sr, δ<sup>18</sup>O and δ<sup>13</sup>C isotopes of carbonate in calcareous sandstone show intermediate values between marine carbonate and silicate phase of the sandstone. The <sup>87</sup>Sr/<sup>86</sup>Sr and δ<sup>18</sup>O isotopes indicate that these are the mixed ones of marine strontium and oxygen with those in silicate phase. Very little carbon is contained in the silicate phase and the δ<sup>13</sup>C value shows always that of marine. These data show conjunctive formations of the 1st-carbonate precipitation from seawater in the sandstone with 2nd-precipitation of carbonate by the quick reaction of silicates and the nascent carbon dioxide released at that time.

    DOI: 10.14862/geochemproc.58.0.185.0

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  283. Strontium isotope ratios of stream sediments in Chugoku areas

    Minami Masayo, Mori Kenta, Jyomori Yuka, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 380 - 380   2011

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    DOI: 10.14862/geochemproc.58.0.380.0

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  284. Quantitative evaluation and age determination of concrete carbonation with analysis of radiocarbon

    Asahara Yoshihiro, Minami Masayo, Maruyama Ippei, Yoshida Hidekazu

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 137 - 137   2011

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    DOI: 10.14862/geochemproc.58.0.137.0

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  285. Reconstruction of paleo diet in pottery excavated from Hamanaka 2 archaeological site, Rebun island, Japan.

    Miyata Yoshiki, Horiuchi Akiko, Cramp Lucy, Minami Masayo, Nakamura Toshio, Evershed Richard

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 300 - 300   2011

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    本研究では,礼文島浜中2遺跡V層出土土器胎土に残存する有機物をBristol大学で脂質分析し,海獣を起源とする有機残渣が検出されるかどうか検討した。その結果,炭素数14~22までの飽和脂肪酸が検出されると同時に,炭素数C16:3,18:3,20:3,22:3などのトリ不飽和脂肪酸(陸上動物や植物油と比べて,海洋性動物由来の油脂に占める割合は非常に高い)の加熱生成物と推定される環状化合物(ω-(o-alkylphenyl) alkanoic acids)が検出された。さらに,海洋性動物の存在の証拠と考えられているPhytanic acidやPristanic acidも検出された。このことは,縄文時代後期(1300~1200 BC)に,本遺跡で,これらの土器でニホンアシカを調理した際に,ニホンアシカの肉はコゲとして内面土器炭化付着物になり,燃料材に由来するススが外面土器付着炭化物として付着した。また,加熱によって生成するこれらの環状化合物は,土器でニホンアシカを調理した可能性を示唆する証拠であり,海洋性動物の指標として考えられるイソプレノイド化合物とともに土器に吸着され,現代検出されたものと考えられる。

    DOI: 10.14862/geochemproc.58.0.300.0

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    J-GLOBAL

  286. Strontium isotope ratios (<sup>87</sup>Sr/<sup>86</sup>Sr) of size classified stream sediments

    Jomori Yuka, Minami Masayo, Suzuki Kazuhiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 314 - 314   2011

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    DOI: 10.14862/geochemproc.58.0.314.0

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  287. History of atmospheric lead deposition to a peat bog in Rishiri Island, Hokkaido, over the past 5000 years

    Kono Makiko, Asahara Yoshihiro, Tanimizu Masaharu, Minami Masayo, Nakamura Toshio, Hosono Takahiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 114 - 114   2011

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    DOI: 10.14862/geochemproc.58.0.114.0

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  288. 骨の^<14>C年代測定 : 骨の化学分析からどのようなことがわかるか

    南 雅代

    化学と工業 = Chemistry and chemical industry   Vol. 63 ( 6 ) page: 478 - 480   2010.6

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  289. 骨の^<14>C年代測定 : 骨の化学分析からどのようなことがわかるか

    南 雅代

    化学と工業 = Chemistry and chemical industry   Vol. 63 ( 6 ) page: 478 - 480   2010.6

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  290. Radiocarbon dating of charred human bone remains preserved in urns excavated from medieval Buddhist cemetery in Japan

    Toshio Nakamura, Shinichi Sagawa, Tetsuya Yamada, Masaaki Kanehara, Norio Tsuchimoto, Masayo Minami, Takayuki Omori, Mitsuru Okuno, Tomoko Ohta

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 268 ( 7-8 ) page: 985 - 989   2010.4

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    For a preliminary test of C-14 dating of cremated human remains, we have collected charred bone and wood-charcoal fragments from cremated remains contained in cinerary urns that had been excavated from medieval Buddhist cemetery at the Hoenji temple in Aichi prefecture, central Japan. More than 230 urn vessels were discovered from the excavated area of ca. 14 m wide and 14 m long. The identification of charred bone or charcoal fragments among the remains was performed by observation of surface appearance, inspection of fine structures by a microscope, bubble formation during the HCl treatments in preparing target material for AMS C-14 dating, carbon and nitrogen contents, delta C-13 and delta N-15 values of the fragments. All C-14 ages obtained for the samples that were identified as charred bone remains were almost consistent with the archeological age estimated based on typological analysis of respective urns. On the other hand, some C-14 ages for the remains identified as wood charcoal, which had been produced from firewood or a wooden coffin during the cremation, were not consistent with archeological estimation, shifting toward older C-14 ages, most probably as the result of old wood effect. (C) 2009 Published by Elsevier B.V.

    DOI: 10.1016/j.nimb.2009.10.080

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  291. Radiocarbon dating of charred human-bone remains preserved in urns excavated from medieval Buddhist cemetery in Japan. Reviewed

    Nakamura, T., Sagawa, S., Yamada, T., Kanehara, M., Tsuchimoto, N., Minami, M., Omori, T., Okuno and M., Ohta, T.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B268   page: 985-989   2010

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  292. A first step toward small-mass AMS radiocarbon analysis at Nagoya University.

    Minami, M., Miyata, Y., Nakamura, T., Hua, Q.

        page: 57-60   2010

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  293. エル・サルバドル共和国出土人骨のストロンチウム同位体比

    南 雅代・市川 彰・坂田 健・森田 航・伊藤伸幸

    古代メソアメリカの考古資料を用いた学術的発展研究(平成21年度総長裁量経費報告書)     page: 23-30   2010

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  294. 少量炭素試料のAMS 14C分析に向けて.

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 166-170   2010

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  295. 放射性炭素を用いたコンクリートの中性化時期の推定.

    浅原良浩・南 雅代・丸山一平・吉田英一・田中 剛名古屋大学加速器質量分析計業績報告書

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 53-60   2010

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  296. 貝の炭素年代測定値が示す意味.

    宮田佳樹・南 雅代・松崎浩之・西本豊弘・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 32-39   2010

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  297. 限外濾過調製法を用いた骨ゼラチンの14C年代測定.

    山崎香奈・南 雅代・大森貴之・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 100-112   2010

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  298. 同位体分析による実構造物中のコンクリートの中性化進行評価の試み. Reviewed

    丸山一平・淺原良浩・南 雅代・吉田英一

    セメントコンクリート論文集   Vol. 64   page: 139-146   2010

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  299. CHIME geochronology of granitic gneiss from Baekdong in the Hongseong area of the Gyeonggi Massif, South Korea. Reviewed

    Suzuki, K., Chwae, U., Dunkley, D.J., Kim, S-W., Kajizuka, I. and Minami, M.

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 57   page: 19-41   2010

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  300. Geochemical map: An essential national inventory map

    TANAKA TSUYOSHI, YAMAMOTO KOSHI, MINAMI MASAYO, MIMURA KOICHI, ASAHARA YOSHIHIRO, YOSHIDA HIDEKAZU, TAKEUCHI MAKOTO

    Annual Meeting of the Geological Society of Japan   Vol. 2010 ( 0 ) page: 543 - 543   2010

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    DOI: 10.14863/geosocabst.2010.0.543.0

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    J-GLOBAL

  301. EVALUATION OF CARBONATION PROCESS IN CONCRETE WITH AN ANALYSIS OF CARBON ISOTOPES

    MARUYAMA Ippei, ASAHARA Yoshihiro, MINAMI Masayo, YOSHIDA Hidekazu

    Cement Science and Concrete Technology   Vol. 64 ( 1 ) page: 139 - 146   2010

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    Radiocarbon method has been applied to concrete in order to estimate progression and age of carbonation in concrete. Concrete cores from a building constructed in 1967 on the campus of Nagoya University, Japan, were collected in 2008, and were investigated for <sup>14</sup>C, δ<sup>13</sup>C, and carbon content. The amount of carbon dioxide was 8% at the concrete surface where the concrete is highly carbonated, decreasing with depth, and was 1% at the depth where carbonation is hardly observed. The measured <sup>14</sup>C values were 144 to 148pMC at the carbonated surface and 71 to 82pMC at the depth of less carbonation, decreasing from the surface down to the depth. These profiles can be interpreted as the following:(1)The age of carbonation in the concrete can be estimated by the variation of <sup>14</sup>C and carbon concentrations, coupled with atmospheric <sup>14</sup>C value at 1967(~170pMC:Hua and Barbetti, 2004)and the present one(~100pMC). Most part of CO<sub>2</sub> in the surface concrete is estimated to be absorbed and fixed in ten years after construction.(2)The deeper part of the concrete also contains small amount of atmospheric CO<sub>2</sub>, which is 43 to 78% of CO<sub>2</sub> in the deeper part. However, δ<sup>13</sup>CPDB value in the deeper part is -25 to -21‰, and is significantly lower than those of atmospheric CO<sub>2</sub>(δ<sup>13</sup>C≅8‰)and marine sedimentary limestones with geological ages(δ<sup>13</sup>C≅0‰). Carbon isotope compositions, <sup>14</sup>C and δ<sup>13</sup>C, in the deeper part of concrete cannot be explained by a simple mixing of the two components. There are two possible causes of the lowest δ<sup>13</sup>C value:material originating from cements and/or concrete, and direct absorption of atmospheric CO<sub>2</sub> by high-pH cement solutions with kinetic effects in the high-pH zone.

    DOI: 10.14250/cement.64.139

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  302. Temporal as well as Spatial Variations of <sup>14</sup>C Concentrations in Environmental Samples: <sup>14</sup>C Fixed in Plant Materials (2)

    Nakamura Toshio, Ohta Tomoko, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 167 - 167   2010

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    DOI: 10.14862/geochemproc.57.0.167.0

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  303. Elemental migration in concrete during carbonation process

    Minami Masayo, Yoshida Hidekazu, Asahara Yoshihiro, Maruyama Ippei

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 35 - 35   2010

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    DOI: 10.14862/geochemproc.57.0.35.0

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  304. Origin of clastics suggested by distribution of CHIME ages of Zircon from sandstones in the Shimanto Belt

    Jyomori Yuka, Minami Masayo, Suzuki Kazuhiro, Takeuchi Makoto

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 277 - 277   2010

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    DOI: 10.14862/geochemproc.57.0.277.0

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  305. Reconstruction of paleo diet from pottery by TOF-SIMS

    Miyata Yoshiki, Saito Kaori, Horiuchi Akiko, Minami Masayo, Kamijo Nobuhiko, Fukushima Kazuhiko, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 147 - 147   2010

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    先史時代の食生活を復元するために,飛行時間型二次イオン質量分析法(Time-of-flight secondary ion mass spectrometry:TOF-SIMS)を用いて,土器に残存する有機物分子を分子レベルで直接同定し(非破壊分析),調理された食材を推定することが可能であるかどうか検討した.

    DOI: 10.14862/geochemproc.57.0.147.0

    CiNii Research

  306. 石灰岩質砂岩の炭素14を指標とする風化評価-コンクリートのナチュラルアナログ研究として-

    南 雅代・池田晃子・吉田英一

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 71-80   2009

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  307. Comparison of δ13C and 14C activities of CO2 samples combusted in closed-tube and elemental-analyzer systems. Reviewed

    Minami, M., Goto, S. A., Omori, T., Ohta, T. and Nakamura, T.

    Nucl. Instr. and Meth. in Phys. Res.     page: doi: 10.1016/j.nimb.2009.10.063   2009

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  308. 封管法で微量のシュウ酸をガス化した場合のガス組成

    後藤(桜井)晶子・南 雅代・三村耕一

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 152-155   2009

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  309. 琵琶湖の淡水リザーバー効果に関する研究

    宮田佳樹・南 雅代・遠部 慎・坂本 稔・今村峯雄

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 112-116   2009

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  310. Areal distribution of strontium isotopic ratios of stream sediments in Kyushu and Shikoku areas

    Jyomori Yuka, Minami Masayo, Goto Akiko, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 210 - 210   2009

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    DOI: 10.14862/geochemproc.56.0.210.0

    CiNii Research

  311. Environment change to estimate from tree-ring cellulose of Japanese pine at Nagoya.

    hayashi kazuki, minami masayo, nakamura tosio, nakatsuka takeshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 129 - 129   2009

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    DOI: 10.14862/geochemproc.56.0.129.0

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  312. Weathering assessment of calcareous sandstone using radiocarbon -A natural analogue study for weathering of concrete construction-

    Minami Masayo, Yoshida Hidekazu, Tanaka Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 259 - 259   2009

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    DOI: 10.14862/geochemproc.56.0.259.0

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  313. Application of radiogenic <sup>14</sup>C to quantitative evaluation of concrete degradation

    ASAHARA Yoshihiro, MINAMI Masayo, MARUYAMA Ippei, YOSHIDA Hidekazu, TANAKA Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 63 - 63   2009

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    DOI: 10.14862/geochemproc.56.0.63.0

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  314. Regional geochemistry of the east Aichi and the south Gifu areas

    TANAKA TSUYOSHI, YAMAMOTO KOUSI, MINAMI MASAYO, Mimura Koichi, Asahara Yoshihiro, Yoshida Hidekazu, Takeuchi Makoto

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 205 - 205   2009

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    DOI: 10.14862/geochemproc.56.0.205.0

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    J-GLOBAL

  315. Strontium Isotope Analysis using Resonance Ionization Mass Spectrometry for Determination of Bone Origin

    Seiji Sasada, Kenichi Watanabe, Yuki Higuchi, Hideki Tomita, Akiko Goto, Masayo Minami, Kazuhiro Suzuki, Takenori Kato, Takuya Hasegawa, Jun Kawarabayashi, Tetsuo Iguchi

    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY   Vol. 5   page: 97 - 100   2008.9

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    We have considered the applicability of strontium isotope analysis, using Laser Ablation-assisted Resonance Ionization Mass Spectrometry (LA-RIMS), to the determination of bone origin. We separated the uncertainty into two categories: ion counting statistics, and short-term or uncontrollable shifts of experimental conditions; only the former decreases with increasing signal intensity. Additionally, we confirmed that long-term shifts of isotope ratio in LA-RIMS can be cancelled by an internal correction method. We preliminarily estimated the precision of our technique to be 0.7% (1 sigma) for 10(5) laser shots: the accuracy is also confirmed within the present uncertainty through the comparison with a reference value.

    DOI: 10.1080/00223131.2008.10875986

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    Scopus

  316. Summaries of "free discussion on Future view of the Center for Chronological Research" and "result of a questionnaire about convenience of the Accelerator mass Spectrometer facility in collaborated research(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    MINAMI Masayo

    Summaries of Researches using AMS at Nagoya University   Vol. 19 ( 19 ) page: 169 - 173   2008.3

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    DOI: 10.18999/sumrua.19.169

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  317. ^<14>C abundances : An index for weathering of concrete construction(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    Tanaka Tsuyoshi, Minami Masayo, Yoshida Hidekazu, Yoshida Shizuo

    Summaries of Researches using AMS at Nagoya University   Vol. 19 ( 19 ) page: 66 - 72   2008.3

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    ^<14>C abundances are measured across a weathering rind formed in Triassic calcareous sandstone. ^<14>C has not been detected by our sensitive AMS in the fresh sandstone, while about a half amount of the present ^<14>C is detected in the weathering rind of the sandstone. 14C is found to be a sensitive index of concrete weathering. The fresh concrete made from natural limestone does not contain any ^<14>C. Weathering in atmospheric condition will replace the dead carbon in the concrete with radiogenic ^<14>C and will be able to detect easily.

    DOI: 10.18999/sumrua.19.66

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  318. Variations of δ^<13>C, δ^<15>N values and 14C ages in human bone sections(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    TAKIGAMI Mai, MINAMI Masayo, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   Vol. 19 ( 19 ) page: 117 - 126   2008.3

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    Prehistrical human bone is used for ^<14>C dating and isotope palaeodietary analysis. Fossil bone tends to be suffered from exogenous contaminants and diagenetic alteration during burial, especially in tropical and wet areas, and the state of bone collagen preservation differs with each bone sample. Since bone sections in an individual have different internal structures, such as density, thickness, amount of spongins and compact bone, different sections could have various levels of diagenesis. In this study, we investigated whether collagen extracted from different sections of an individual has variations of C/N ratios, δ^<13>C and δ^<15>N values for different sections of an individual, and whether we can estimate its palaeodietary by analyzing one bone section of a whole individual. The samples used are eleven bone sections (cranium, sphenoid, tooth, rib, humerus, radius or ulna, the lower femur, the central femur, tibia and two back-bones) in an individual, nine sections in another, and seven sections in the other, collected from the Yuigahama-minami archealogical site, Kamakura, Japan. The surface of fossil samples were shaved and ultrasonicated repeatedly in distilled water, followed by HCl and NaOH treatments; then samples were lyophilized and pulverized. The powdered bone sample was treated with 0.6M-HCl in a cellulose tube in a beaker over 20h at 4℃. The decalcified bone sample was treated by 0.6M-NaOH followed by 1.2M-HCl and 0.6M-HCl. Gelatin was extracted from acid/alkali-insoluble residue by heating in distilled water for 12h at 80-90℃. Combusted gelatin was refined into N_2 and CO_2. These gases were used for carbon and nitrogen isotopic measurement by using an isotope ratio mass spectrometer (Finnigan, MAT252). Gelatin was wrapped into a Sn cup and measured for C/N ratios by using an elemental analyzer (Euro Vector, Euro EA3000). To estimate sample preparation-induced variation, seven gelatins were extracted from a bone section, and each measured for C/N ratios, δ^<13>C and δ^<15>N values. The deviations of δ^<13>C and δ^<15>N values for seven gelatins are ±0.1‰ and ±0.2‰, respectively. Most bone sections have gelatin yield of more than 0.7 wt%, and carbon yield of the combusted gelatin between 42 and 46 wt%. Bone with more than 0.7 wt% gelatin is generally well preserved, and collagens with around 40 wt% C are intact. The bone samples in this study, therefore, are well preserved and regarded as suitable for analysis. The C/N ratios of gelatins varied from 3.1 to 3.4 with different sections in an individual. The values show quality of the gelatin extractions because the good collagens have C/N ratios between 2.9 and 3.6. The δ^<13>C values of gelatins have variations of about 1‰, between -19.3 and -18.2‰, for different bone sections in an individual. The other two individuals have variations between -19.3 and -18.4‰, and -18.3 and -17.7‰. The δ^<15>N values have variations of about 1.5‰ (12.6〜14.0‰, 12.4〜13.1‰ and 12.6〜14.1‰, respectively) for different sections of each individual. There is a positive correlation between δ^<13>C and δ^<15>N values. The back-bones tend to have highest values, and the rib and tooth have a little higher values than the others. ^<14>C ages have no variation in different sections. It means exterior organic substance don't get mixed in gelatin.

    DOI: 10.18999/sumrua.19.117

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  319. Is ^<14>C concentration higher for plants growing at high altitude Tibetan Plateau than those at the sea level?(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    NAKAMURA Toshio, WATANABE Takahiro, MATSUNAKA Tetsuya, NISHIMURA Mitsugu, ZHU Liping, OHTA Tomoko, MINAMI Masayo

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 110 - 116   2008.3

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    To answer a question whether ^<14>C concentration is higher for plants growing at high altitude locations than those growing at the sea level, we recently have collected plants samples from four sites at different altitudes: (1) plants from Lake Pumayum area at the altitude of 5030m; (2) plant samples from the suburbs of Lhasa city at the altitude of 4000m; (3) needle leaves from pine tree at 2600m-high location of Mt. Fuji; and (4) needle leaves from pine trees growing in the Higashiyama Campus of Nagoya University. The plant samples were rinsed with distilled water, treated chemically by an acid- alkali-acid treatment, and finally dried in an electric oven. A part of the samples were combusted to produce CO_2 and the produced CO_2 was changed to graphite for ^<14>C measurements with an AMS ^<14>C system at Nagoya University. The measured ^<14>C concentration was given in a ratio of sample ^<14>C/^<12>C to that of standard. For both sample and standard, isotopic fractionation was corrected. In addition, the decrease of ^<14>C concentration by radioactive decay for a standard from AD1950 to the year of sample collection was also corrected. ^<14>C concentrations were highest for the plant samples from Lake Pumayum showing a value of 1.081±0.016 in average, followed by the values of 1.055±0.005 for plants near Lhasa city, the values of 1.051±0,002 for plants from Mt. Fuji, and finally 1.017±0.003 for pine needles from Nagoya University. This clear altitude dependence may be explained preferably by Suess effect that is a dilution effect of modern ^<14>C concentration with dead carbon, containing no ^<14>C, produced by combustion of fossil fuel. The estimated altitude dependence of ^<14>C atom production is not strong and the resulting altitude dependence of ^<14>C concentration of CO_2 can fade out quickly by the strong air-mass mixing in the troposphere.

    DOI: 10.18999/sumrua.19.110

  320. The place name 'Umi' in Kamiyahagi of Ena City originated from the damming by a landslide triggered by Tensho Earthquake in 1586(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    Suzuki Kazuhiro, Nakamurai Toshio, Kato Takenori, Ikeda Akiko, Goto Akiko, Oda Hirotaka, Minami Masayo, Kamikubo Hiroshi, Kajizuka Izumi, Adachi Kaori, Tsuboi Motohiro, Tokiwa Tetsuya, Oota Tomoko, Nishida Masami, Esaka Naoko, Tanaka Atsuko, Mori Shinobu, Dunkley Daniel J., Kusiak Monika A., Suzuki Satoko, Niu Etsuko, Nakazaki Mineko, Senda Ryoko, Kanagawa Kazuyo, Kumazawa Hiroyo

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 26 - 38   2008.3

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    Umi is located along the Kamimura River within the Kamiyahagi area of southeastern Ena City, Gifu Prefecture. The name 'Umi' means sea or large lake; however, there are no lakes in the mountainous Kamiyahagi area. The Tokai Gou (torrential rain) flood of September 11-12, 2000 destroyed embankments along the river, and exposed sedimentary layers that are typical of a lacustrine depositional setting. This confirms the existence of a paleo-lake from which the name Umi originated. The ^<14>C ages, ranging from 280±37 to 345±25 BP, appear to be contemporaneous with Tensho Earthquake that occurred in central Japan on January 18, 1586.

    DOI: 10.18999/sumrua.19.26

  321. Reconstruction of climatic changes using δ^<13>C variations of annual tree-ring celluloses of a Japanese pine tree from Nagoya(Summaries of Research Using AMS)

    HAYASHI Kazuki, MINAMI Masayo

    Summaries of Researches using AMS at Nagoya University   Vol. 19 ( 19 ) page: 175 - 183   2008.3

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    We investigated the relationships between climatic factors and annual tree-ring data such as stable carbon isotopic composition and tree-ring width of a Japanese pine tree (Pinus thunbergii) with annual rings from 1955 to 2002, which was collected at the site of Environmental Studies Hall in Nagoya University. The climatic factors used are: month total values of sunshine duration and precipitation, month average values of day average temperature, relative humidity and vapor pressure in the Nagoya area. The annual rings of the sample are very wide in the periods from 1960-1970. This remarkable growth might be related with the local environment changes not with the regional environment changes because the annual-ring width shows no correlation with the climatic factors. The δ^<13>C fluctuations of the annual rings in the period from 1955 to 1979 are different from those in the period from 1980 to 2002. The result shows the change factors of δ^<13>C values in the two periods are different. In the period from 1955 to 1979, no-climatic environmental factors, that is, artificial factors such as air pollution effect the δ^<13>C fluctuations because they are not related with the climatic factors. In the period from 1980 to 2002, on the other hand, the month average values of relative humidity are good correlative with the δ^<13>C fluctuations of earlywood and latewood fractions, relatively.

    DOI: 10.18999/sumrua.19.175

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  322. Preliminary report of monitoring of vibration caused by earthquake-proof construction of Furukawa Memorial Hall(Summaries of Research Using AMS)

    IKEDA Akiko, KATO Takenori, NAKAMURA Toshio, MINAMI Masayo, KUDO Yuichiro

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 190 - 193   2008.3

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    Furukawa Memorial Hall is now under earthquake-proof construction and we are performing measurement of vibration caused by the construction to evaluate the influence given to a Tandetron Accelerator Mass Spectrometer and two CHIME machines installed in Furukawa Memorial Hall. In this report we described about the monitoring points of vibration and measurement equipments used for vibration measurement.

    DOI: 10.18999/sumrua.19.190

  323. Status and applications of Tandetron AMS system-II at Nagoya University in 2007(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    NAKAMURA Toshio, MINAMI Masayo, ODA Hirotaka, KUDO Yuichiro, IKEDA Akiko, OMORI Takayuki, NISHIMOTO Hiroshi, HAYASHI Kazuki, OHTA Tomoko, NISHIDA Masami, SUYA Tokunori, SEKINO Tatsuya

    Summaries of Researches using AMS at Nagoya University   Vol. 19 ( 19 ) page: 39 - 45   2008.3

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    A second ^<14>C-AMS system (Model 4130-AMS), built by High Voltage Engineering Europe (HVEE), B.V., The Netherlands, was delivered to Nagoya University in 1996/97. Acceptance tests were completed in January of 1999, and routine measurements began in mid-2000. Since completion of the acceptance tests in early 1999, we have encountered a lot of troubles with the machine, particularly in 2002. Since the end of 2002, the machine has relatively worked well, expect for minor problems. However, since June in 2006, we had a serious problem with the high voltage generation system. We opened the accelerator tank twice, in October of 2006 and July of 2007, and replaced each time totally 154 diodes and 5 resistors, 230 diodes and 5 resistors, respectively, for the high-voltage generator system used to rectify the AC power source and stabilize the DC current. Thus the number of targets measured was 1384 in 2007, which was almost the two-third of that in normal year. We also encountered troubles with (1) spark-oriented damage of a high voltage controller module, (2) a cooling system of the power generator for the analyzing magnets both for high energy and low energy beams. The cooling-water flow for the power generator was disturbed by chemical deposits in water tubes, and was not plenty enough to cool down the generator. A thermo-switch stopped the generator for safety and thus we could not operate the analyzing magnets. We replaced the damaged tubes to new ones. This trouble also limited the number of targets measured. Since November 1^<st>, 2007, we had a scheduled shutdown of the AMS system, owing to the improvements of the building, Furukawa Memorial Hall, against earthquake invasion expected in near future around Tokai area, central Japan, In April of 2008, we will start ^<14>C measurements again, possibly in a new good condition of the building.

    DOI: 10.18999/sumrua.19.39

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  324. Carbon isotopic fractionation during sample combustion and CO_2 purification : Comparison of δ^<13>C measured values between closed tube- and elemental analyzer-combusted samples(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    Minami Masayo, Ohta Tomoko, Omori Takayuki, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 160 - 168   2008.3

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    For combustion of samples a closed tube-combustion (CTC) method has been generally and widely used until now, but this method takes much time and labor. Recently we have investigated a CO_2 production and purification system using a commercial elemental analyzer (EA) connected to cryogenic traps, which enables fast combustion and CO_2 purification of samples. We compared δ^<13>C values between closed tube- and elemental analyzer-combusted samples of Oxalic Acid-II (new oxalic acid standard distributed by NIST; SRM4990c) and almost ^<14>C-free oxalic acid (Kishida[○!R]). For the CTC method δ^<13>C measured values tend to increase as sample amount is small relative to CuO amount. This might be due to absorption of more ^<12>C than ^<13>C to an inner wall of Pyrex tube and/or CuO. Furthermore, different δ^<13>C is observed by addition of Sulfix[○!R] to small amount of CO_2. δ^<13>C values measured by the EA method show good agreement with the results using the CTC method, and sample preparation background of ^<14>C is higher in the CTC method than the EA method, suggesting that this newly developed EA system shows high precision and accuracy. However, more detailed study and improvement on the EA system will be needed for different amounts of various standards such as IAEA standards.

    DOI: 10.18999/sumrua.19.160

  325. Strontium isotope analysis using Resonance Ionization Mass Spectrometry for determination of bone origin. Reviewed

    Sasada, S., Watanabe, K., Higuchi, Y., Tomita, H., Goto, A., Minami, M., Suzuki, K., Kato, T., Hasegawa, T., Kawarabayashi, J. and Iguchi, T.

    Journal of Nuclear Science and Technology   Vol. 5   page: 97-100   2008

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  326. 古人骨の同一個体内における部位の違いによるδ13C・δ15N値、14C年代の相違の有無

    瀧上 舞・南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIX   page: 117-126   2008

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  327. コンクリート風化の超長時間評価を目的とする石灰岩質砂岩地層の14C存在度変化

    田中 剛・南 雅代・吉田英一・吉田鎮男

    名古屋大学加速器質量分析計業績報告書   Vol. XIX   page: 117-126   2008

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  328. 試料燃焼-二酸化炭素精製における炭素同位体比分別 -封管法と元素分析計による試料調製の違い-

    南 雅代・太田友子・大森貴之・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 160-168   2008

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  329. Areal distribution of strontium isotopic ratios of stream sediments in north and central Kyushu area

    Goto Akiko, Minami Masayo, Asahara Yoshihiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 55 ( 0 ) page: 382 - 382   2008

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    DOI: 10.14862/geochemproc.55.0.382.0

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  330. Radiocarbon ages of medieval human skeletons excavated from the Yuigahama archaeological site, Kamakura, Japan

    Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 55 ( 0 ) page: 325 - 325   2008

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    DOI: 10.14862/geochemproc.55.0.325.0

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  331. Diverse microstructures from Archaean chert from the mount goldsworthy-mount grant area, pilbara craton, western australia: Microfossils, dubiofossils, or pseudofossils?

    Kenichiro Sugitani, Kathleen Grey, Abigail Allwood, Tsutomu Nagaoka, Koichi Mimura, Masayo Minami, Craig P. Marshall, Martin J. Van Kranendonk, Malcolm R. Walter

    PRECAMBRIAN RESEARCH   Vol. 158 ( 3-4 ) page: 228 - 262   2007.10

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    A diverse assemblage of indigenous carbonaceous microstructures, classified here as highly probable microfossils to pseudomicrofossils, is present in the &gt;ca. 2.97 Ga Farrel Quartzite (Gorge Creek Group) at Mount Grant and Mount Goldsworthy, Pilbara Craton, Western Australia. The microstructures are an integral part of the primary sedimentary fabrics preserved in black chert beds. The interbedding of chert with layers of large silicified crystal pseudomorphs and fine to coarse grained volcaniclastic/clastic beds indicate deposition in a partially evaporitic basin with terrigenous clastic and volcaniclastic input.
    Similar associations of microstructures are present at the same stratigraphic level in outcrops more than 2 km apart. Four major microstructural types are present: thread-like, film-like, spheroidal and lenticular to spindle-like, each of which can be further subdivided into several sub-types. Most of the microstructures were deposited as part of an assemblage of chemical and clastic sediments, although there are some thread-like microstructures present for which a synsedimentary origin cannot be confirmed. Many specimens appear to have originally had flexible but breakable walls and some occur in colony-like aggregations. Size distributions for the four major types are generally narrow, a feature typical of biogenic structures. The microstructures are composed of disordered carbon (as revealed by Raman spectroscopy) and the bulk isotopic composition of the carbon is delta C-13&lt;-30per mil, which is consistent with biological processing.
    The combined morphological and geological evidence suggests that the film-like structures, small spheres associated with films, large spheroids and spindle-like structures are probable to highly probable fossil remains of microorganisms. The morphological variety among the microstructures suggests that a diverse microbial ecosystem flourished in the Pilbara region during the Archaean. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.precamres.2007.03.006

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  332. Radiocarbon and C-13 variations during the last 300 years in lacustrine sediments of Lake Biwa, central Japan

    Minami M., Tane N., Nakamura T.

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 71 ( 15 ) page: A669 - A669   2007.8

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  333. Radiocarbon and C-13 variations during the last 300 years in lacustrine sediments of Lake Biwa, central Japan

    Minami M, Tane N, Nakamura T

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 71 ( 15 ) page: A669 - A669   2007.8

  334. High precision C-14 measurements and wiggle-match dating of tree rings at Nagoya University Reviewed

    Toshio Nakamura, Hiroko Miyahara, Kimiaki Masuda, Hiroaki Menjo, Kohsuke Kuwana, Katsuhiko Kimura, Mitsuru Okuno, Masayo Minami, Hirotaka Oda, Andrzej Rakowski, Tomoko Ohta, Akiko Ikeda, Etsuko Niu

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 259 ( 1 ) page: 408 - 413   2007.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    An AMS system dedicated to C-14 measurement (486-AMS) built by HVEE BN. The Netherlands, was delivered to Nagoya University in 1996, and is in use for routine C-14 measurements. The relative error of the standard deviation (1 sigma) of C-14/C-12 ratios is 10.3% to +/- 0.5% (somewhat larger than the uncertainty of +/- 03% from C-14 counting statistics) and that of the corresponding C-13/C-12 ratios is +/- 0.03% to +/- 0.07%, as measured for HOxII standards. By using this AMS system, we are now testing whether the recommended IntCa104 C-14 calibration data set is consistent with the natural C-14-concentration variations as recorded in Japanese trees. Here we report the results of these consistency tests and accurate age determination of tree rings grown in Japan, using the C-14 wiggle matching technique. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2007.02.005

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  335. Marine reservoir effect deduced from C-14 dates on marine shells and terrestrial remains at archeological sites in Japan Reviewed

    Toshio Nakamura, Iwao Nishida, Hideki Takada, Mitsuru Okuno, Masayo Minami, Hirotaka Oda

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 259 ( 1 ) page: 453 - 459   2007.6

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    Paired marine and terrestrial samples were collected at archeological shell mounds in Kagoshima, Saga and Aichi prefectures and selected from sediment samples bored at the Mawaki archeological site in Ishikawa prefecture, to evaluate the local marine reservoir effect in Japan. The local reservoir corrections, Delta R, were evaluated to be 8 +/- 110 and - 178 +/- 113 C-14 years for Miyasaka shell mound, - 125 +/- 50 to -45 +/- 49 and -86 +/- 48 to -21 +/- 50 C-14 years for Higashimyo shell mound, -46 +/- 52, 40 +/- 44, -136 +/- 44 and 100 + 44 14C years for Yoshigo shell mound, -255 +/- 38 and - 146 +/- 46 C-14 years for Kuzubasama shell mound, -71 +/- 33, -30 +/- 85 and -78 +/- 74 C-14 years on average for C4, C5 and C6 cores, respectively, from the Mawaki site. The existing data along with the present results suggest that the Delta R values obtained for central to southern part of Japan are consistent with zero or a bit negative, but are different from the Delta R values of 200 to 500 C-14 years for the northern parts of the Japanese archipelago. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2007.01.186

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  336. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part1)

    Minami Masayo, Terui Atsushi, Takaoka Nobuo, Nakamura Toshio

    名古屋大学加速器質量分析計業績報告書   ( 18 ) page: 55 - 55   2007.3

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    第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<第1部> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall

    DOI: 10.18999/sumrua.18.55

  337. Diurnal variation of CO_2 concentration, Δ^<14>C and δ^<13>C in an urban forest : Estimate of the anthropogenic and biogenic CO_2 contributions(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part1)

    TAKAHASHI HIROSHI A., KONOHIRA EIICHI, HIYAMA TETSUYA, MINAMI MASAYO, NAKAMURA TOSHIO, YOSHIDA NAOHIRO

    Summaries of Researches using AMS at Nagoya University   Vol. 18 ( 18 ) page: 53 - 53   2007.3

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    DOI: 10.18999/sumrua.18.53

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  338. Present Status of AMS ^<14>C facility of Nagoya University and its applications to archeology and geology(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part1)

    NAKAMURA Toshio, MINAMI Masayo, ODA Hirotaka, IKEAD Akiko, WATANABE Takahiro, MIYAHARA Hiroko, OHTA Tomoko, YOSHIOKA Shigeo, NISHIDA Masami

    名古屋大学加速器質量分析計業績報告書   ( 18 ) page: 31 - 32   2007.3

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    第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<第1部> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall

    DOI: 10.18999/sumrua.18.31

  339. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,POSTER SESSION)

    MINAMI Masayo, TAKEYAMA Masami, MURANAKA Yasushi, NAKAMURA Toshio

    名古屋大学加速器質量分析計業績報告書   ( 18 ) page: 83 - 83   2007.3

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    第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<POSTER SESSION> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall

    DOI: 10.18999/sumrua.18.83

  340. Variations of C/N ratios, δ^<13>C and δ^<15>N values in human bone sections(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,POSTER SESSION)

    TAKIGAMI Mai, MINAMI Masayo, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   Vol. 18 ( 18 ) page: 73 - 82   2007.3

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    Prehistrical human bone is used for ^<14>C dating and isotope palaeodietary analysis. Fossil bone tends to be suffered from exogenous contaminants and diagenetic alteration during burial, especially in tropical and wet areas, and the state of bone collagen preservation differs with each bone sample. Since bone sections in an individual have different internal structures, such as density, thickness, amount of spongins and compact bone, different sections could have various levels of diagenesis. In this study, we investigated whether collagen extracted from different sections of an individual has variations of C/N ratios, δ^<13>C and δ^<15>N values for different sections of an individual, and whether we can estimate its palaeodietary by analyzing one bone section of a whole individual. The samples used are eleven bone sections (cranium, sphenoid, tooth, rib, humerus, radius or ulna, the lower femur, the central femur, tibia and two back-bones) in an individual, nine sections in another, and seven sections in the other, collected from the Yuigahama-minami archealogical site, Kamakura, Japan. The surface of fossil samples were shaved and ultrasonicated repeatedly in distilled water, followed by HCl and NaOH treatments; then samples were lyophilized and pulverized. The powdered bone sample was treated with 0.6M-HCl in a cellulose tube in a beaker over 20h at 4℃. The decalcified bone sample was treated by 0.6M-NaOH followed by 1.2M-HCl and 0.6M-HCl. Gelatin was extracted from acid/alkali-insoluble residue by heating in distilled water for 12h at 80-90℃. Combusted gelatin was refined into N_2 and CO_2. These gases were used for carbon and nitrogen isotopic measurement by using an isotope ratio mass spectrometer (Finnigan, MAT252). Gelatin was wrapped into a Sn cup and measured for C/N ratios by using an elemental analyzer (Euro Vector, Euro EA 3000). To estimate sample preparation-induced variation, seven gelatins were extracted from a bone section, and each measured for C/N ratios, δ^<13>C and δ^<15>N values. The deviations of δ^<13>C and δ^<15>N values for seven gelatins are ±0.1‰ and ±0.2‰, respectively. Most bone sections have gelatin yield of more than 0.7 wt%, and carbon yield of the combusted gelatin between 42 and 46 wt%. Bone with more than 0.7 wt% gelatin is generally well preserved, and collagens with around 40 wt% C are intact. The bone samples in this study, therefore, are well preserved and regarded as suitable for analysis. The C/N ratios of gelatins varied from 3.1 to 3.4 with different sections in an individual. The values show quality of the gelatin extractions because the good collagens have C/N ratios between 2.9 and 3.6. The δ^<13>C values of gelatins have variations of about 1‰, between -19.3 and -18.2‰, for different bone sections in an individual. The other two individuals have variations between -19.3 and -18.4‰, and -18.3 and -17.7‰. The δ^<15>N values have variations of about 1.5‰ (12.6〜14.0‰, 12.4〜13.1‰ and 12.6〜14.1‰, respectively) for different sections of each individual. There is a positive correlation betweenδ^<13>C andδ^<15>N values. The back-bones tend to have highest values, and the rib and tooth have a little higher values than the others.

    DOI: 10.18999/sumrua.18.73

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  341. Status and applications of Tandetron AMS system-II at Nagoya University in 2006(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part 2)

    NAKAMURA Toshio, MINAMI Masayo, ODA Hirotaka, IKEDA Akiko, WATANABE Takahiro, MIYAHARA Hiroko, OHTA Tomoko, YOSHIOKA Shigeo, NISHIDA Masami

    Summaries of Researches using AMS at Nagoya University   Vol. 18 ( 18 ) page: 91 - 97   2007.3

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    A second ^<14>C-AMS system (Model 4130-AMS), built by High Voltage Engineering Europe (HVEE), B.V, The Netherlands, was delivered to Nagoya University in 1996/97. Acceptance tests were completed in January of 1999, and routine measurements began in mid-2000. Since completion of the acceptance tests in early 1999, we have encountered a lot of troubles with the machine, in particular in 2002 (see Fig.1). Since 2002, the machine has relatively worked well, expect for minor problems. However, it should be stressed that even a minor malfunction, ^<14>C measurements are not possible with the system. In fact, the AMS machine was in good condition in the early half of 2006. However, since June in 2006, we had a serious problem with the high voltage generation system. We opened the accelerator tank in October and replaced totally 154 diodes and 5 resistors for the high-voltage generator system used to rectify the AC power source and stabilize the DC current. Thus the number of targets measured was 1115 in 2006, which is almost the half of that in normal year. We also encountered a trouble with a cooling system of the power generator for the analyzing magnets both for high energy and low energy beams. The cooling-water flow for the power generator was disturbed by chemical deposits in the water tube, and was not enough to cool down the generator. Thermo-switch stopped the generator for safety and thus we could not operate the analyzing magnets. We replaced the damaged tubes to new ones. This trouble also limited the number of targets measured.

    DOI: 10.18999/sumrua.18.91

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  342. Geochemical study on human and animal bones excavated from the Yuigahama site, Kamakura, Japan(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part 2)

    Minami Masayo, Nakamura Toshio, Hirata Kazuaki, Nagaoka Tomohito, Hoshino Keigo

    Summaries of Researches using AMS at Nagoya University   ( 18 ) page: 134 - 143   2007.3

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    During the past several decades, many medieval skeletons were excavated from archaeological sites in the Yuigahama area, Kamakura, Japan. The excavations yielded more than 5,000 individuals in varying states of preservation from the Zaimokuza, Seiyokan, Yuigahama-minami and Chusei Shudan Bochi sites. Medieval Kamakura was an ancient capital of the Kamakura Shogunate, and a lot of people lived in Kamakura with high population density. The human skeletons excavated from the Zaimokuza site are reported to be humans dead by competition at the end of the Kamakura Shogunate, but a detailed study on dating of the human skeletons has not made yet. In this study, we measured ^<14>C ages, together with carbon and nitrogen isotope ratios, of human skeletal remains excavated from the Yuigahama-minami site and Chusei Shudan Bochi site. The δ^<13>C and δ^<15>N were not different between human skeletal samples of both sites, while the ^<14>C ages were different between them: The human bones of the Yuigahama-minami site are 100 year younger than those of the medieval collective-cemetery site. All of ages of human skeletons from both of the sites are older than the latest Kamakura period. The δ^<13>C and δ^<15>N values of the medieval Kamakura people are higher than those of terrestrial mammals, indicating that they exploited some amount of marine fish and/or mammals with higher δ^<13>C and δ^<15>N as protein sources. Therefore, the ^<14>C ages obtained for human skeletons could be order than the true ages. ^<87>Sr/^<86>Sr isotopic ratios of human skeletons of the Yuigahama-minami site tend to be higher than those of the Chusei Shudan Bochi site. Soils, plants and animals feeding on them in a given locality have ^<87>Sr/^<86>Sr values that generally mirror underlying bedrock composition, and thus ^<87>Sr/^<86>Sr ratios of human skeletons are useful tools for assessing migration in prehistory. The result obtained in this study suggests that Yuigahama-minami humans and Chusei Shudan Bochi humas lived in different areas. More skeleton samples should be analyzed for determining detailed ^<14>C ages of humans excavated from the Yuigahama sites, and for estimating migration of prehistory of the medieval Kamakura humans.

    DOI: 10.18999/sumrua.18.134

  343. Geochemical mapping in Aichi prefecture, Japan: Its significance as a useful dataset for geological mapping

    Koshi Yamamoto, Tsuyoshi Tanaka, Masayo Minami, Koichi Mimura, Yoshihiro Asahara, Hidekazu Yoshida, Setsuo Yogo, Makoto Takeuchi, Masami Inayoshi

    APPLIED GEOCHEMISTRY   Vol. 22 ( 2 ) page: 306 - 319   2007.2

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    Since 1994 a geochemical mapping project has been undertaken in Aichi prefecture, central Japan, with the aim of establishing a database to contribute to environmental assessment in the region. To date more than 1200 stream sediments have been collected and analyzed. The samples were analyzed for 10 major elements by X-ray fluorescence spectrometry and loss-on-ignition.
    The analyses show that stream sediments from areas with sedimentary bedrock are enriched in SiO2 and mafic elements such as TiO2 and Fe2O3 compared to areas with granitic bedrock. The SiO2 enrichment is mainly due to the amount of quartz and the enrichment in mafic elements is due to biotite, both of which are derived from the sedimentary bedrock. In contrast, sediments derived from granitic bedrock are characterized by high abundances of elements contained in feldspars such as Na2O and CaO. This contrast in elemental distribution (e.g., Na2O/TiO2 ratio) can be useful for geological mapping in the areas covered by vegetation and with poor bedrock exposure. The relative abundances of Ca, Na and K in the stream sediments suggest that the Inagawa granite, one of the main granite bodies in the study area, can be classified into four distinct types. This classification is distinct from previous classifications based on geological and petrochemical studies. It is confirmed that analysis of geochemical compositions of stream sediments has considerable potential as a tool in geological studies including lithological mapping. (c) 2006 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.apgeochem.2006.09.011

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  344. 514 A Report on Practice and evaluation of Environmental Education

      ( 45 ) page: 653 - 656   2007.2

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    Publisher:Architectural Institute of Japan  

  345. Geochemical mapping in Aichi Prefecture, Japan: Its significance as a useful dataset for geological mapping. Reviewed

    Yamamoto, K., Tanaka, T., Minami, M., Mimura, K., Asahara, Y., Yoshida, H., Yogo, S., Takeuchi, M. and Inayoshi, M.

    Applied Geochemistry   Vol. 22   page: 306-319   2007

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  346. Diverse microstructures from Archaean chert from the Mount Goldsworthy - Mount Grant area, Pilbara Craton, Western Australia: microfossils, dubiofossils, or pseudofossils? Reviewed

    Sugitani, K., Grey, K., Allwood, A.C., Nagaoka, T., Minami, M., Marshall, C.P., Van Kranendonk, M.J. and Walter, M.R.

    Precambrian Research   Vol. 158   page: 228-262   2007

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  347. 鎌倉由比ヶ浜埋葬人骨および獣骨の地球化学的研究

    南 雅代・中村俊夫・平田和明・長岡朋人・鵜澤和宏

    名古屋大学加速器質量分析計業績報告書   Vol. XVIII   page: 134-143   2007

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  348. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age. Reviewed

    Minami, M., Takeyama, M., Mimura, K. and Nakamura, T.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B259   page: 547-551   2007

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  349. Application of (14C) Wggle-matching to support dendrochronological analysis in Japan

    Nakamura T., Okuno M., Kimura K., Mitsutani T., Moriwaki H., Ishizuka Y., Kim K. H., Jing B. L., Oda H., Minami M., Takada H.

    TREE-RING RESEARCH   Vol. 63 ( 1 ) page: 37 - 46   2007

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  350. Reconstruction of migration and mobility using strontium isotope analysis of archaeological human skeletons -Do 87Sr/86Sr ratios of animal bones reflect 87Sr/86Sr ratios of the birth- and growth-places?-

    Minami Masayo, Suzuki Kazuhiro, Goto Akiko, Kato Takenori, Watanabe Ken-ichi, Hasegawa Takuya

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 54 ( 0 ) page: 203 - 203   2007

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    To evaluate whether 87Sr/86Sr ratio of a bone reflects 87Sr/86Sr ratio of the birth- and growth-places, two bone samples, together with the geological samples in their birth- and growth-places, were measured for 87Sr/86Sr ratios by TIMS. The samples used are a boar collected at Asuke, Toyota City, Aichi prefecture, and a black bass collected from Lake Biwa. The 87Sr/86Sr ratio of the boar bone was 0.71001±0.00002, while those of stream sediments in the Asuke area was around 0.710. The 87Sr/86Sr ratio of the black bass bone was 0.71215±0.00002, while those of surface water at the southern basin in Lake Biwa was 0.71233±0.00002. The similar 87Sr/86Sr ratios between bone and its provenance geology indicates that the 87Sr/86Sr ratio of bone reflects the isotopic ratios of the birth- and growth-places.

    DOI: 10.14862/geochemproc.54.0.203.0

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  351. Origin Determination of Fossil Bone using Resonance Ionization Mass Spectrometry

    SASADA SEIJI, HIGUCHI YUKI, TOMITA HIDEKI, Watanabe Kenichi, Kawarabayasi Jyun, Iguchi Tetsuo, Minami Masayo, Suzuki Kazuhiro, Katou Takenori, Goto Syouko, Hasegawa Takuya

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   Vol. 2007s ( 0 ) page: 66 - 66   2007

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    DOI: 10.11561/aesj.2007s.0.66.0

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  352. Application of (14C) Wggle-matching to support dendrochronological analysis in Japan

    Nakamura T, Okuno M, Kimura K, Mitsutani T, Moriwaki H, Ishizuka Y, Kim K. H, Jing B. L, Oda H, Minami M, Takada H

    TREE-RING RESEARCH   Vol. 63 ( 1 ) page: 37 - 46   2007

  353. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldsworthy in the Pilbara Craton, Western Australia : Implications for alteration and origin

    Sugitani Kenichiro, Yamashita Fumiaki, Nagaoka Tsutomu, MINAMI MASAYO, YAMAMOTO KOSHI

    Geochemical journal : journal of the Geochemical Society of Japan   Vol. 40 ( 5 ) page: 523 - 535   2006.10

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    Publisher:Geochemical Society of Japan  

  354. Geochemistry and sedimentary petrology of Archean clastic sedimentary rocks at Mt. Goldsworthy, Pilbara Craton, Western Australia: Evidence for the early evolution of continental crust and hydrothermal alteration Reviewed

    K Sugitani, F Yamashita, T Nagaoka, K Yamamoto, M Minami, K Mimura, K Suzuki

    PRECAMBRIAN RESEARCH   Vol. 147 ( 1-2 ) page: 124 - 147   2006.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    Geochemical and petrological analyses of Archean clastic metasedimentary rocks at Mt. Goldsworthy in the Pilbara Craton, Western Australia reveal the early evolution of continental crust and the Earth's surface environment. The succession correlative to the ca. 3.4 Ga Strelley Pool Chert is composed dominantly of silicified medium-grained to very coarse-grained sandstone, siltstone and shale, with minor chert and precipitative beds of nahcolite and barite. The sandstone is generally rich in detrital quartz, with the coarse-grained sandstone containing abundant, very well rounded mono-crystalline quartz that is assumed to be derived from older sedimentary rocks. The recycled detritus is mixed with first-cycle detrital material such as feldspar and barite that is sourced from reworked precipitative beds. The sandstone also contains zircon, Fe-Ti oxides, sulfides and lithic fragments of various origins including mafic-ultramafic volcanic rocks, sedimentary and possibly metamorphic rocks.
    Al-Ti-Zr systematics indicates that the source area for the Mt. Goldsworthy clastic metasedimentary rocks was locally subjected to hydrothermal alteration. Reaction with the acid solution resulted in Al-dissolution and the formation of Zr- and Ti-enriched residual detrital material. The enrichment in heavy rare earth elements and low Al2O3/TiO2 values of Mt. Goldsworthy samples reflects the inflow of the residual zircon- and Ti-oxides-enriched detritus. Th/Sc, La/Sc and Eu/Eu-* ratios that are unaffected by contamination by the residual detritus indicate a mixed provenance with a significant contribution from granitoid rocks. The presence of detrital zircon older than 3.5 Ga was also demonstrated in this study. (c) 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.precamres.2006.02.006

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  355. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites

    Minami M, Terui A, Takaoka N, Nakamura T

    METEORITICS & PLANETARY SCIENCE   Vol. 41 ( 4 ) page: 529 - 540   2006.4

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  356. Application of Sr isotopes to geochemical mapping and provenance analysis: The case of Aichi Prefecture, central Japan

    Y Asahara, H Ishiguro, T Tanaka, K Yamamoto, K Mimura, M Minami, H Yoshida

    APPLIED GEOCHEMISTRY   Vol. 21 ( 3 ) page: 419 - 436   2006.3

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    Geochemical maps expressing areal distributions of chemical elements in the earth's land surface have been published in several countries in relation to various global environment issues. The authors have applied a radiogenic isotope ratio, Sr-87/Sr-86, to geochemical mapping in order to understand the geological origin, transportation and dispersion system of chemical elements in the earth's land surface. The Sr isotope ratio is a useful tracer for distinguishing the geological origin of surficial deposits, especially in areas where surface exposure of bedrocks is low, because it is not significantly altered by the processes of weathering and transportation. Most bedrocks in the Japanese islands are covered by plants, soils and urban areas. In this study, 142 of 1219 stream sediments (&lt; 180 mu m) collected from the northeastern part of Aichi Prefecture, in the central part of Japan (75 km x 30 km), were analyzed. Their Sr isotope ratios range from 0.7086 to 0.7315 with an average of 0.7129, except for one sample. This average is higher than the mean of the upper crust of the Japan Arc (the Japanese Island Crustal Composite, JICC), 0.7077. This difference can be attributed to the below-average presence of young volcanic rocks, generally having lower Sr-87/Sr-86 values, and the above-average presence of granitic rocks, in the study area compared with the surface exposure of the Japan Arc. The first factor controlling the distribution of Sr isotope ratios is the bedrock distributed around the sampling points. Regional variation in the Sr-87/Sr-86 value shows that it is higher in the western and southeastern parts, where sedimentary rocks and metamorphic rocks are distributed, and that it is lower mainly in the central part, where granitic rocks are distributed. The Rb-87/Sr-86-Sr-87/Sr-86 plot for stream sediments more clearly reveals the differences and similarities of bedrocks. In some locations, the distribution of Sr isotope ratios does not correspond to that of bedrocks on the geological map. One reason is the existence of unmapped bedrock, for example, small intrusive masses of granite. The other is fluvial transportation and dispersion. The distribution of the isotope ratios suggests that some stream sediments include surficial deposits from a few km upstream. Application of the Sr isotope ratio to geochemical mapping is useful for revealing both the distribution of unexposed bedrocks and the transportation of surficial deposits. Information on unexposed bedrocks will be expected to contribute to the improvement of geological mapping. (c) 2006 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.apgeochem.2005.12.003

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  357. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites. Reviewed

    Minami, M., Terui, A., Takaoka, N. and Nakamura, T.

    Meteoritics & Planetary Science   Vol. 41 ( 4 ) page: 529-540   2006

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  358. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldworthy in the Pilbara Craton, Western Australia: Implications for alteration and origin. Reviewed

    Sugitani, K., Yamashita, F., Nagaoka T., Minami, M. and Yamamoto, K.

    Geochemical Journal   Vol. 40   page: 523-535   2006

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  359. Geochemistry and sedimentary petrology of Archean clastic sedimentary rocks at Mt. Goldworthy, Pilbara Craton, Western Australia: Evidence for the early evolution of continental crust and hydrothermal alteration. Reviewed

    Sugitani, K., Yamashita, F., Nagaoka T., Yamamoto, K., Minami, M., Mimura, K. and Suzuki K.

    Precambrian Research   Vol. 147   page: 124-147   2006

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    Language:English   Publishing type:Research paper (scientific journal)  

  360. Application of Sr isotopes to geochemical mapping and provenance analysis: the case of Aichi Prefecture, central Japan. Reviewed

    Asahara, Y., Ishiguro, H., Tanaka, T., Yamamoto, K., Mimura, K., Minami, M., Yoshida, H.

    Applied Geochemistry   Vol. 21   page: 419-436   2006

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  361. INAA trace element analysis of stream sediments collected from the northeastern areas of Aichi Prefecture, central Japan. Reviewed

    Minami, M., Shibata, S. and Tanaka, T.

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 53   page: 15-32   2006

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  362. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldsworthy in the Pilbara Craton, Western Australia: Implications for alteration and origin

    Sugitani Kenichiro, Yamashita Fumiaki, Nagaoka Tsutomu, Minami Masayo, Yamamoto Koshi

    GEOCHEMICAL JOURNAL   Vol. 40 ( 5 ) page: 523 - 535   2006

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  363. INAA trace element analysis of stream sediments collected from the nortearstern areas of Aichi Prefecture, central Japan

    MINAMI M., SHIBATA Shin-nosuke, TANAKA Tsuyoshi

    The Journal of Earth and Planetary Sciences, Nagoya University   ( 53 ) page: 15 - 32   2006

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    Geochemistry and Cosmochemistry Laboratory, Nagoya University, started a geochemical mapping project in 1994 to make environmental assessment of the Chubu area in Japan. During ten years from 1994 to 2004, stream sediment samples of 1,563 were collected in the northeastern parts of Aichi Prefecture. Major element data of these samples by X-ray fluorescence spectrometry (XRF) and the discussion on their regional spatial distributions have been published. Here we report 22 element analysis (Sc, Cr, Fe, Co, Zn, As, Rb, Sb, Cr, Ba, La, Ce, Sm, Eu, Tb, Yb, Lu, Hf, Ta, Au, Th and U) of the sediment samples by instrumental neutron activation analysis (INAA), together with discussion on the accuracy and precision of our analytical method by INAA. A new automated γ-ray counting and data processing system for INAA and postaldelivery system of irradiated samples from Japan Atomic Energy Research Institute were utilized. The INAA system enables us simple and rapid INAA analysis of a large number of samples. By using this system, nine GSJ rock reference samples (JB-1a, JB-2, JA-1, JG-1a, JG-2, JLk-1, JSd-1, JSd-2 and JSd-3) and one USGS rock standard G-2 were analyzed to examine accuracy and precision of analytical results. The results show good agreement with the reference values, indicating that our analytical system is effective for analysis of stream sediments with various bedrock geology. On the other hand, in order to evaluate accruracy of the values obtained by INAA, comparison of analytical results of stream sediments by INAA with the previously analyzed data by inductively coupled plasma atomic emission spectrometry (ICP-AES), atomic absorption spectrometry (AAS) and XRF was made. The result indicates that the data by the ICP-AES and AAS methods, which need HF digestion of samples, could be lower than the true values for some elements due to partly incomplete decomposition of samples. The INAA method, which needs no HF digestion, is suitable for accurate analysis for a large number of samples in the geochemical mapping project. We have collected stream sediments collected at the same site every year since 1994 to 2004. The samples were used to evaluate sample heterogeneity of the sediment collected at the same site. Most of trace elements, except for Cr, Zn, Hf and Au, of the samples show the concentrations with ±(30~50)% deviations, a little larger than the analytical errors. The Cr, Zn, Hf and Au concentrations have larger deviations, indicating the heterogeneous distribution of small accessory minerals at the sampling site and even in sample aliquots of 100 mg.国立情報学研究所で電子化したコンテンツを使用している。

    DOI: 10.18999/joueps.53.15

  364. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldsworthy in the Pilbara Craton, Western Australia: Implications for alteration and origin

    SUGITANI KENICHIRO, YAMASHITA FUMIAKI, NAGAOKA TSUTOMU, MINAMI MASAYO, YAMAMOTO KOSHI

    GEOCHEMICAL JOURNAL   Vol. 40 ( 5 ) page: 523 - 535   2006

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    The geochemical characteristics of Archean unusual siliceous rocks at Mt. Goldsworthy region in the Pilbara Craton were studied. The siliceous rocks have been assigned to the uppermost Warrawoona Group mafic volcanic rocks, and are overlain by quartz-rich sandstone units of the Strelley Pool Chert that probably represent continental margin sedimentation. The Warrwoona rocks have been heavily altered and are now composed dominantly of microcrystalline quartz, with subordinate mica, Fe-Ti oxides and unidentified silicates; original magmatic textures are only locally preserved. The complex alteration is assumed to result from multiple events including weathering during subaerial exposure, circulation of hydrothermal fluids, and metasomatic silicification. During alteration, Al, Ti, Zr, Th, Cr and Sc remained immobile, although their concentrations were lowered by a substantial increase in silica. Mutual ratios of these immobile elements such as Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> Cr/Th, Th/Sc, Cr/Al<sub>2</sub>O<sub>3</sub> and Zr/TiO<sub>2</sub> and comparison with the least-altered contemporaneous mafic-ultramafic rocks in the Pilbara Craton show that the altered rocks originated from high-MgO rocks such as komatiite and high-MgO basalt, possibly of Al-depleted type. The Mt. Goldsworthy rocks have significantly higher Th/Sc (0.024-0.1) values compared with primitive mantle values (0.005) and komatiite (0.01). This feature is interpreted as a result of crustal contamination, which is consistent with the early evolution of continental crust.

    DOI: 10.2343/geochemj.40.523

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  365. Annual and seasonal changes of chemical composition of stream sediments in the Yada river in Seto, Aichi

    Minami Masayo, Itoh Tomoko, Tanaka Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 53 ( 0 ) page: 98 - 98   2006

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    DOI: 10.14862/geochemproc.53.0.98.0

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  366. Behavior of arsenic and gold in Mesozoic and Paleozoic areas, Inuyama-city,Aichi Prefecture;studies by geochemical mapping

    Ito Tomoko, Tanaka Tsuyoshi, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 53 ( 0 ) page: 136 - 136   2006

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    Gold, arsenic and antimony appear together in hydrothermally altered area. However, Au exists very little in the eastern part of Inuyama-city, although high As concentrations are observed. There might be different mechanism of elemental concentration in As and Au from hydrothermally altered area. In this study, we collected 101 stream sediments in Inuyama-city, Aichi Prefecture, and determine major elements and trace elements that included As ,Sb and Au. We drew the geochemical map of these elements and discuss mobility of elements in Mesozoic and Paleozoic area.

    DOI: 10.14862/geochemproc.53.0.136.0

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  367. Sr isotopic composition of fossil human bones from Kamakura, Japan

    Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 53 ( 0 ) page: 224 - 224   2006

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    DOI: 10.14862/geochemproc.53.0.224.0

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  368. Carbon and nitrogen isotopic fractionation in bone collagen during chemical treatment

    M Minami, T Nakamura

    CHEMICAL GEOLOGY   Vol. 222 ( 1-2 ) page: 65 - 74   2005.10

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    In measuring radiocarbon ages of fossil bone samples, it is necessary to extract pure bone protein from the samples by chemical treatment. To evaluate the effect of the chemical treatment including XAD-2 chromatography on carbon and nitrogen isotopic values, we measured C/N ratio, delta(13)C and delta(15)N in decalcified fraction, gelatin, hydrolysate, and XAD-treated hydrolysate extracted from fossil bones together with modem samples. The C/N ratios of the collagen fractions progressively decreased as chemical treatment proceeded. The delta(13)C values of the fractions became more positive as purification proceeded. There was an overall +0.5 similar to+2.0 parts per thousand difference in delta(13)C and a slight trend of decrease in delta(15)N during chemical processing and around +0.3 parts per thousand difference in delta(13)C and +0.2 parts per thousand in delta(15)N during XAD-2 treatment only. The large change in C/N ratio and delta(13)C of the hydrolysates following XAD-2 chromatography in the Bovine Achilles tendon collagen standard could be explained by the removal of lipids unextracted before the XAD-2 treatment. There was no difference in 613 C between hydrolysates and XAD-treated hydrolysates in fossil bones because the latter contains negligible preserved lipids. Fossil bones and lipid-extracted collagen standard showed the similar C/N change and isotopic fractionation during sequential chemical treatment. Individual amino acid standards showed little to no increase in delta(13)C and delta(15)N values during XAD-2 treatment, except for aspartic acid and glutamic acid, which showed pronounced increase in delta(15)N values. Furthermore, regarding amino acid compositions separated by XAD-2 treatment, alanine and glycine tend to be enriched, while valine, threonine, isoleucine, leucine, and serine compositions tend to be depleted. The carbon and nitrogen isotopic fractionation during sequential chemical treatment might reflect variation in the amino acid composition of the extracted fractions due to degradation, such as decarboxylation, rather than removal of contaminants. The variation during XAD-2 treatment is due to both degradation by HCl and isotopic fractionation related to the XAD-2 resin. (c) 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.chemgeo.2005.06.005

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  369. Carbon and nitrogen isotopic fractionation in bone collagen during chemical treatment. Reviewed

    Minami M. and Nakamura, T.

    Chemical Geology   Vol. 222   page: 65-74   2005

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  370. Database for geochemical mapping of the northeastern areas of Aichi Prefecture, central Japan -XRF major element data of stream sediments collected in 1994 to 2004-. Reviewed

    Minami, M., Tanaka, T., Yamamoto, K., Mimura, K., Asahara, Y., Takeuchi, M., Yoshida, H. and Yogo, S.

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 52   page: 25- 67   2005

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  371. 琵琶湖の湖底堆積物ならびに流入河川堆積物の炭素同位体比から探る堆積環境

    南 雅代,種 紀彦,小田寛貴,横田喜一郎

    名古屋大学加速器質量分析計業績報告書   Vol. XVI   page: 73-83   2005

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  372. Determination of Sr isotopic composition and concentration on a single sample aliquot with <sup>84</sup>Sr-concentrated spike

    Minami Masayo, Hayashi Takamasa, Tanaka Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 52 ( 0 ) page: 273 - 273   2005

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    Techniques have been developed to measure Sr isotopic composition and concentration on a single sample aliquot in rock and water samples with <sup>84</sup>Sr-concentrated spike. A single TIMS measurement of the Sr sample yielded both isotopic composition and concentration after decomposition of mixture of sample and <sup>84</sup>Sr spike. Standard solutions with different Sr concentrations, made form Johnson-Matthey Specpure SrCO<sub>3</sub> (99.999%), were added by appropriate amount of 84Sr spike solution, and determined the Sr isotopic composition and concentration. The single measurement was adopted to water samples of an Indian river and standard rocks such as JP-1 and JCh-1. We will report the results.

    DOI: 10.14862/geochemproc.52.0.273.0

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  373. Database for geochemical mapping of the northeastern areas of Aichi Prefecture, central Japan ^ XRF major element data of stream sediments collected in 1994 to 2004 -

    MINAMI Masayo, TANAKA Tsuyoshi, YAMAMOTO Koshi, MIMURA Koichi, ASAHARA Yoshihiro, TAKEUCHI Makoto, YOSHIDA Hidekazu, YOGO Setsuo

    The Journal of earth and planetary sciences, Nagoya University   ( 52 ) page: 25 - 67   2005

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    国立情報学研究所で電子化したコンテンツを使用している。

    DOI: 10.18999/joueps.52.25

  374. Sedimentary environment in Lake Biwa -Carbon isotopes of lake and river sediments-

    Minami Masayo, Tane Norihiko, Oda Hirotaka, Yokota Kiichiro, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 52 ( 0 ) page: 170 - 170   2005

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    Lake sediment cores in Lake Biwa, collected from the northern and southern basins, respectively, were measured for carbon content, d<sup>13</sup>C, and d<sup>14</sup>C. Acid-alkali-insoluble fraction (residue) and acid-soluble fraction obtained by acid-alkali-acid treatment of the sediments were analyzed. The sediments in rivers flowing in Lake Biwa were also measured for C content and d<sup>13</sup>C of residue and acid-soluble fractions. The d<sup>13</sup>C and d<sup>14</sup>C values of residue were higher than those of acid-soluble fraction. We will report the difference, together with the result of different chemical behaviors of sediments in the northern and southern basins.

    DOI: 10.14862/geochemproc.52.0.170.0

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  375. Possible microfossils from c. 3.4 Ga Strelley Pool Chert at Mt. Goldsworthy in the Pilbara Block, Western Australia

    Sugitani Kenichiro, Mimura Koichi, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 52 ( 0 ) page: 105 - 105   2005

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    DOI: 10.14862/geochemproc.52.0.105.0

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  376. Chemical techniques to extract organic fractions from fossil bones for accurate C-14 dating

    M Minami, H Muto, T Nakamura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 223 ( SPEC. ISS. ) page: 302 - 307   2004.8

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    We examined different concentrations of HCI, such as 0.4, 0.6, 0.8, 1.0 and 1.2 M, for decalcification of fossil bones and different times of 0.1 M NaOH treatment on collagens to determine the best conditions for purifying collagen through extraction of humic contaminants, and compared the alkali treatment method with the XAD-2 treatment method for several types of fossils. The yield of acid-insoluble bone fractions did not change over the range from 0.4 to 1.0 M HCI and decreased suddenly with 1.2 M HCl on decalcification, and the 14 C ages of the extracted gelatins from the five decalcified fractions were unchanged, suggesting that &lt;1.0 M, and probably about 0.4 M, is recommended to the best concentration of HCI to decalcify fossil bones efficiently. The alkali treatment was done with 0.1 M NaOH at room temperature. The NaOH-treated collagens, with a considerable loss of organic bone protein especially for long treatment time, gave almost the same C-14 ages as those of the XAD-purified hydrolysates. The NaOH-treatment time should be less than several hours to avoid a loss of collagen. The fossil bones used are relatively well-preserved, but the alkali treatment could bring about a lot of loss of organic bone proteins for poorly-preserved bones. The XAD-2 treatment method is effective for accurate radiocarbon dating of fossil bones, if the XAD-2 resin is completely precleaned. (C) 2004 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2004.04.060

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  377. High precision C-14 measurements with the HVEE Tandetron AMS system at Nagoya University

    T Nakamura, E Niu, H Oda, A Ikeda, M Minami, T Ohta, T Oda

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 223 ( SPEC. ISS. ) page: 124 - 129   2004.8

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    In 1996/1997, a C-14-AMS system (model 4130-AMS) manufactured by High Voltage Engineering Europe (HVEE), B.V., The Netherlands, was installed at the Center for Chronological Research (CCR), Nagoya University. The system provides highly precise and accurate C-14 determinations as well as delta(13)C values for graphite targets (1.5 mg carbon and 3 mg iron powder) prepared from standards and samples. One sigma errors in C-14 ages typically range from +/-20 to +/-40 yr for materials younger than 8000 BP, depending on absolute C-14 ages or C-14 counting uncertainties. Standard deviations of C-13/C-12 ratios range from +/-0.1parts per thousand to +/-0.9parts per thousand. For relatively young samples, accuracies of less than 10parts per thousand are obtained using IAEA reference materials and FIRI test samples. Background levels on the C-14-AMS system range from 52 to 54 ka BP for a pure graphite powder. The HVEE C-14-AMS system at the CCR has been used routinely to date samples with a variety of research applications. (C) 2004 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2004.04.027

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  378. Precambrian Antarctic Meteorite "Phantasia"

    Tanaka T, Minami M, Shibata S, Yanai K, Shiraishi K

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 68 ( 11 ) page: A769 - A769   2004.6

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  379. Precambrian Antarctic Meteorite "Phantasia"

    Tanaka T, Minami M, Shibata S, Yanai K, Shiraishi K

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 68 ( 11 ) page: A769 - A769   2004.6

  380. Chemical characteristics of lake sediments in Lake Biwa(Summaries of Researches Using AMS)

    MINAMI Masayo, HIRANO Yasuyuki, ODA Hirotaka, YOKOTA Kiichiro

    Summaries of Researches using AMS at Nagoya University   ( 15 ) page: 181 - 198   2004.3

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    The chemical composition of major and trace elements in bottom sediments of Lake Biwa was determined by X-ray fluorescence spectrometry (XRF) and instrumental neutron activation analysis (INAA). The sediments were collected in the northern basin, the southern basin and its boundary part. The vertical distribution patterns of some elements in the northern basin, such as Al, Ti and Sc, are similar each other. The concentrations of Al, Ti and Sc in the northern basin increase from the surface to the depth of about 18cm, where they reach maxima. The variations in concentrations are probably due to temporal influx of Allvium which consists of clay, mud and gravel layer. The concentrations of As and Mn are extremely high in the surface layer in the northern and southern basins. Manganese in sediments exists in different forms of oxidation state together with variation of redox condition. Manganese precipitates in oxic layer as Mn(IV)-oxides. Therefore, the concentration of Mn is high in the surface layer. The high concentration of As in the oxidized surface layer is due to Mn acting as carrier, so that the vertical distribution pattern of As is similar to that of Mn. The plots of major elements against TiO_2 show correlations in granites, river sediments and lake sediments. The lower concentrations of Na_2O, CaO and SiO_2 in river and lake sediments compared to granites are caused by weathering of plagioclase. The higher concentrations of Fe_2O_3 and MgO are relative increase in samples due to resolution of some elements sensitive to weathering.

    DOI: 10.18999/sumrua.15.181

  381. High precision 14C measurement with the HVEE Tandetron AMS system at Nagoya Universtiy. Reviewed

    Nakamura, T., Niu, E., Oda, H., Ikeda, A., Minami, M.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B223-224   page: 124-129   2004

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  382. 都市公共用水域に対するノンポイント汚染源としての道路脇粉塵(<63μm画分)の化学的特徴-名古屋市の事例- Reviewed

    杉谷健一郎・野村晶子・南 雅代・加藤博和

    水環境学会誌   Vol. 27   page: 547-552   2004

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  383. 東シベリアマンモス臼歯化石のアミノ酸のラセミ化と14C年代

    南 雅代・竹山雅美・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XV   page: 52-65   2004

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  384. Chemical techniques to extract organic fractions from fossil bones for accurate 14C dating, Reviewed

    Minami, M., Muto, H. and Nakamura, T.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B223-224   page: 302-307   2004

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  385. 琵琶湖湖底堆積物の化学的特徴

    南 雅代・平野靖幸・小田寛貴・横田喜一郎

    名古屋大学加速器質量分析計業績報告書   Vol. XV   page: 181-198   2004

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  386. Radiocarbon age and amino acid racemization of a Mammoth molar fossil from eastern Siberia

    Minami Masayo, Takeyama Masami, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 51 ( 0 ) page: 110 - 110   2004

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    We measured D/L aspartic acid ratios and radiocarbon ages of a Mammoth molar fossil collected from Bykovsky Peninsula, eastern Siberia. Four parts of dentin, enamel, cement and root in the molar fossil were analyzed for gelatins and XAD-treated hydrolysates. The <sup>14</sup>C ages of four parts are different, and the gelatins have 1000-2000 year older ages than the XAD-treated hydrolysates, expect for the root part. It is thought that the Molor fossil is dated about 37,000 BP. The D/L aspartic acid ratio of the molar fossil is low, and it suggests that amino acids in the Mammoth molar have not racemized since it was dead and buried. This result is well consistent with the fact that it was preserved in the permafrost.

    DOI: 10.14862/geochemproc.51.0.110.0

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  387. Chemical Composition of Fine Fractions (<63.MU.m) of Street Dust as Nonpoint Pollution Source of River and Sewer Systems in Urban Areas-A Case Study for Nagoya City-

    SUGITANI Kenichiro, NOMURA Akiko, MINAMI Masayo, KATO Hirokazu

    Journal of Japan Society on Water Environment   Vol. 27 ( 8 ) page: 547 - 552   2004

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    The chemical composition of fine fractions (<63<i>μ</i>m) of street dust in Nagoya City, central Japan, is examined to obtain information on the nonpoint pollution load of river and sewer systems in urban areas. The results show that the fine fractions of street dust have more C, Fe, Mn, Ca, Mg, P, Cr, Zn, Sb, As, Hf, and Au than hypothetical background level. Additionally, Ti and Co are also derived significantly from anthropogenic sources. Among these “enriched elements”, C, Ca, P, Zn and Ti are likely derived from tire and asphalt dusts, whereas Fe, Mn, Co and possibly Cr appear to be incorporated into street dust as iron alloy particles. These metallic iron particles are also considered to be derived from parts of vehicles such as their bodies and brake disks.

    DOI: 10.2965/jswe.27.547

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  388. Dependence of C-14 ages on carbon fraction and reservoir effect for archeological materials

    Nakamura T, Minami M, Oda H, Niu E, Ikeda A, Ohta T

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A328 - A328   2003.9

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  389. Geochemical map of Aichi Prefecture, central part of Japan - Minor elements

    Tanaka T, Yamamoto K, Minami M, Mimura K, Asahara Y, Yoshida H, Yogo S, Inayoshi M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A476 - A476   2003.9

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  390. Sr-87/Sr-86 ratios in lake sediments in Lake Biwa, Japan - Environmental change in the last 200 years

    Minami M, Oda H, Yokota K, Ando K, Yamamoto K

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A292 - A292   2003.9

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  391. New attempt to geochemical mapping of Sr isotope in Aichi Prefecture, central part of Japan

    Asahara Y, Ishiguro H, Tanaka T, Yamamoto K, Mimura K, Minami M, Yoshida HD, Yogo S

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A25 - A25   2003.9

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  392. Geochemical map of Aichi prefecture, central part of Japan major elements

    Yamamoto K, Tanaka T, Minami M, Mimura K, Asahara Y, Yoshida H, Yogo S, Inayoshi M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A552 - A552   2003.9

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  393. Dependence of C-14 ages on carbon fraction and reservoir effect for archeological materials

    Nakamura T, Minami M, Oda H, Niu E, Ikeda A, Ohta T

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A328 - A328   2003.9

  394. Radiocarbon age and racemization reaction of amino acids extracted from a molar fossil(Summaries of Researches Using AMS)

    MINAMI Masayo, MURANAKA Yasushi, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   Vol. 14 ( 14 ) page: 201 - 207   2003.3

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    The XAD-2 treated collagen-hydrolysate of a Naumann's elephant molar fossil collected from the bottom of the Uwa Sea was analyzed with the gaschromatography. The ratio of D/L Aspartic acid is 0.128. Substituting the D/L Aspartic acid ratio and the radiocarbon age of 43,870±450 BP (Muto, 2001) for "D/L" and "t", respectively, into the following equation : 1n((1+D/L)/(1-D/L))-0.14=2k_<asp>t where k_<asp> is the rate constant of Aspartic acid enantiomer, and t is the time after the start of the racemization reaction, we have (1.34±0.01)×10^<-6> for k_<asp>. Futhermore, substituting the value of k_<asp> into the equation : 1n((8×10^<-4>)/k_<asp>)=((33.4×10^3)/1.987)(310-T)/(T×310) (10) where T is the average temperature (K) of the fossil since deposition, yields T of 277.3±0.1 K (4.1±0.1℃). The age between 44,000 and 10,000 years ago was a glacial period. The Seto Inland Sea was a land before 10,000 years, and sea water has flowed into the Seto Inland Sea since 8,000 years ago. The surrounding temperature of the molar fossil on land could be over 4.1℃, and water temperature of the bottom of the sea is assumed to be 0〜5℃. Therefore, the average temperature of 4.1℃ for the molar fossil could be true.

    DOI: 10.18999/sumrua.14.201

    CiNii Books

  395. Evaluation of organometals as an indicator of environmental assessment : case of Lake Biwa sediments(Summaries of Researches Using AMS)

    ANDO Kunihiko, MINAMI Masayo, ODA Hirotaka, YOKOTA Kiichiro, YAMAMOTO Koshi

    Summaries of Researches using AMS at Nagoya University   ( 14 ) page: 155 - 169   2003.3

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    The organometal, which consists of organic compound and metal, is regarded to be hardly affected by the geology of the hinterland. Thus, it may be useful as a new indicator of environmental assessment. In this study, organometals in sediments of Biwa Lake are analyzed, and their usefulness as an indicator of environmental assessment is discussed. The vertical distribution of organometals does not correlate with that of major elements. Since major element compositions are controlled mainly by the geology of hinterland, organometals is hardly affected by major elements. The vertical distribution of these elements are roughly divied into three groups: 1) elements with no clear variation of the content against burial depth such as Fe Mn Ni and Cu; Artificial pollution of these elements are not detected in the bottom sediments in Lake Biwa, 2) elements with higher content in surface layers such as Mn, Fe Ni and Cu; Increase for Fe and Mn may be ascribed to the effect of bacterial accumulation, and increase for Ni and Cu may be due to artificial addition. There is a strong correlation between Ni and Cu, and 3) elements with the highest content near 20cm layer such as Co, As ans Se; They are positively correlated with organic carbon, that is, organic matters. In the case of Lake Biwa, the organometals that could be used as an indicator of anthropogenic pollution are Ni and Cu. Artificial poluution of Ni and Cu have been increased during this 100year.

    DOI: 10.18999/sumrua.14.155

  396. 最近落下した隕石ならびに南極やまと隕石の14C濃度測定

    南 雅代・照井敦・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIV   page: 72-82   2003

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

  397. 有機金属の環境指標としての有用性の検討

    安藤邦彦・南 雅代・小田寛貴・横田喜一郎・山本鋼志

    名古屋大学加速器質量分析計業績報告書   Vol. XIV   page: 155-169   2003

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  398. 化石骨から抽出したアミノ酸の14C年代とラセミ化反応

    南 雅代・村中泰志・中村俊夫

    名古屋大学加速器質量分析業績報告書   Vol. XIV   page: 201-207   2003

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  399. Radiocarbon age and racemization reaction of amino acids extracted from a Naumann's molar fossil

    Minami Masayo, Muranaka Yasushi, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 31 - 31   2003

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    DOI: 10.14862/geochemproc.50.0.31.0

    CiNii Research

  400. Application of Sr isotope to an assessment of geoenvironmental impact

    Asahara Yoshihiro, Ishiguro Hiroko, Tanaka Tsuyoshi, Yamamoto Koshi, Mimura Koichi, Minami Masayo, Yoshida Hidekazu, Yogo Setsuo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 63 - 63   2003

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    陸域の金属元素の主なリザーバは岩石圏にあり、風化、侵食により土砂や溶存態に形を変え、河川、沿海、外洋へと移動、拡散していく。現代においては、人為的な森林伐採や丘陵地開発による侵食の加速、人間活動による金属物質の放出もある。これらの様々な要因が複合的に絡まり河川水や海水、堆積物の元素組成が決まっているが、その要因をひとつひとつ紐解くにはその起源の情報を与えてくれる同位体は有力な指標である。本講演では、愛知県北東部地域から採取された150の河川堆積物試料と15の基盤岩岩石試料中の微量金属元素ストロンチウムの同位体比から得られる地圏環境情報について報告する。

    DOI: 10.14862/geochemproc.50.0.63.0

    CiNii Research

  401. Geochemical map of Aichi Prefecture -Minor elements-

    Tanaka Tsuyoshi, Yamamoto Koshi, Minami Masayo, Mimura Koichi, Asahara Yoshihiro, Yoshida Hidekazu, Yogo Setsuo, Inayoshi Masami

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 62 - 62   2003

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    Geochemical map is a useful tool for geoenvironmental assessment. 27 minor elements were examined for 1500 stream sediment of Aichi Prefecture, Japan. Most of the elemental distribution patterns are considered as an effect of basement geology. Some of the high Fe distribution ,however, are correlated with golf cource. Gold and arsenic distribution seems be a result of geothermal activities.

    DOI: 10.14862/geochemproc.50.0.62.0

    CiNii Research

  402. Geochemical map of aichi Prefecture - Major elements -

    Yamamoto Koshi, Tanaka Tsuyoshi, Minami Masayo, Mimura Koichi, Asahara Yoshihiro, Yoshida Hidekazu, Yogo Setsuo, Inayoshi Masami

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 61 - 61   2003

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    Geochemical and Cosmochemical Laboratory, Nagoya University, has started a geochemical mapping in 1994, in order to make a geo-environmental assessment of Aichi Prefecture, central part of Japan.The analyses suggest that the stream sediments from areas with sedimentary rock basement are more enriched in SiO2 than those from areas with granitic basement. This SiO2 enrichment can be ascribed to the wide distribution of siliceous sedimentary rocks such as bedded cherts in their hinterland, the Mino Terrane. Samples from the area in the granitic basement are characterized by enrichment of Na, K, and Ca. The relative abundance of these elements, however, differs in the respective granitic bodies. This difference reflects the difference of abundance and chemical composition of plagioclase and potassium feldspar in stream sediments. Therefore, the major elements examined here reflect natural geo-environment and geochemical map may be useful as a supporting data for geological mapping.

    DOI: 10.14862/geochemproc.50.0.61.0

    CiNii Research

    J-GLOBAL

  403. Presence of evolved continental crust in Archean Pilbara craton, Western Australia: Evidence from Re-Os isotopic systematics of 3.4Gyr cherts

    Suzuki K, Shimizu F, Okamoto M, Hattori Y, Minami M, Shimoda G, Tatsumi Y, Adachi M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 66 ( 15A ) page: A755 - A755   2002.8

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  404. Presence of evolved continental crust in Archean Pilbara craton, Western Australia: Evidence from Re-Os isotopic systematics of 3.4Gyr cherts

    Suzuki K, Shimizu F, Okamoto M, Hattori Y, Minami M, Shimoda G, Tatsumi Y, Adachi M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 66 ( 15A ) page: A755 - A755   2002.8

  405. Isotope diluted neutron activation analysis (ID-NAA) for quantitative analysis of PGEs and Re

    Tanaka T, Senda R, Shibata S, Minami M, Tanimizu M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 66 ( 15A ) page: A763 - A763   2002.8

  406. Diurnal variation of CO2 concentration, Delta C-14 and delta C-13 in an urban forest: estimate of the anthropogenic and biogenic CO2 contributions

    Takahashi HA, Konohira E, Hiyama T, Minami M, Nakamura T, Yoshida N

    TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY   Vol. 54 ( 2 ) page: 97 - 109   2002.4

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  407. Preliminary results of 2000-fourth international radiocarbon intercomparison : international blind test of <14>^C measurement

    Nakamura Toshio, Oda Hirotaka, Niu Etsuko, Ikeda Akiko, Minami Masayo, Takahashi Hiroshi, Ohta Tomoko

    Summaries of Researches using AMS at Nagoya University   ( 13 ) page: 29 - 40   2002.3

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    A Tandetron accelerator mass spectrometer (Tandetron-I AMS system), an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Center for Chronological Research (CCR), Nagoya University. In the meanwhile, a so-called second generation AMS ^<14>C apparatus (Tandetron-II AMS system) manufactured by High Voltage Engineering Europe, BV, the Netherlands has been installed successfully at CCR in 1997. Though we had experienced a lot of difficulties with the Tandetron-II just two years after its installation, we were able to start ^<14>C measurements with the machine in acceptable precision since the end of 1999. The ^<14>C measurement error (one sigma error)of the Tandetron-II is around ±20 - ±40 years, which is clearly smaller than that of the Tandetron-I (around ±50 - ±90 years). In addition, the reproducibility tests of ^<14>C measurements for the IAEA C1- C8 ^<14>C standards suggest that accuracy of ^<14>C measurement can be as good as around 0.5% We participated the Forth International Radiocarbon Intercomparison (FIRI) program started in 1999,after its set up at the time of the 15^<th> International Radiocarbon Conference at the University of Groningen, the Netherlands, in 1997. In the FIRI program, 10 samples of different materials were distributed to 92 ^<14>C laboratories of three different ^<14>C detection methods (25 AMS labs., 18 GPC labs. and 49 LSC labs.) from 37 different countries. Our AMS group of Nagoya University is one of the 25 AMS labs. The FIRI results have been reported preliminarily at the Edinburgh workshop on March 2001. We can also get the results by the web site of Radiocarbon (www. radiocarbon. org). We briefly summarize the report in relation with our own results, which are consistent with the mean values of ^<14>C results reported from 25 AMS labs.

    DOI: 10.18999/sumrua.13.29

  408. Determination of the condition in decalcification for fossil bones

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 13 ) page: 177 - 185   2002.3

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    To investigate the best HCl concentration used for decalcification of a fossil bone without loss of bone organic fractions, various concentrations of 0.4M, 0.6M, 0.8M, 1.0M and 1.2M HCl were examined to analyze carbon, nitrogen and radiocarbon isotopes. The bone used in the experiment is a fossil fragment collected from the Awazu submarine archeological site, Shiga. The yield of insoluble decalcified fractions does not change in the range from 0.4M to 1.0M HCl, and it decreases on 1.2M HCl. The result suggests that a part of bone organic fractions departs from the decalcified fractions by treatment of higher HCl concentration. The ^<14>C age for gelatin collagens does not change on any concentrations of 0.4M, 0.6M, 0.8M and 1.2M HCl, and could be reliable because the XAD-2 treated hydrolysate fraction shows the same ^<14>C age. Therefore, 0.4M is the best concentration of HCl to efficiently decalcify the fossil fragment in this study. The fossil bone used in this study is well-preserved, and the above best condition of decalcification does not apply to another poorly-preserved fossil bones. It could be, however, suitable to decalcify and fossil bone with 0.4M HCl in a cellulose tube.

    DOI: 10.18999/sumrua.13.177

  409. Sr isotope ratios of sediments in southern Lake Biwa

    Minami Masayo, Oda Hirotaka, Kojima Sadao, Yokota Kiichiro, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 13 ) page: 71 - 81   2002.3

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    A sediment core in the southern Lake Biwa was analyzed for ^<210>Pb, ^<137>Cs and Sr isotope ratio. The sedimentation rate of the lake sediments assumed by ^<210>Pb is about 3mm/y. 137Cs, a fallout product from atmospheric nuclear weapon tests, shows maximum activity at 9.5cm depth. Maximum fallout of ^<137>Cs to water and land occurred during 1963-1964,and the sedimentation rate assumed by ^<137>Cs is also about 3mm/y. The sedimentation rate of 3mm/y, however, could be untrue because surface sediments are disturbed and mixed by physical turbulence. Sr isotope ratios of the lake sediments radically change from 0.7185 to 0.7198,and Sr concentrations also radically change from 73ppm to 64ppm at near 10cm depth. Therefore, the following causes are expected : 1) Sr system has changed by artificially environment pollution since near 1960,and 2) surface sediments are disturbed and mixed by physical turbulence. In the case of 2), the profiles of ^<210>Pb and ^<137>Cs lead to mixing process except sedimentation process. The profiles of other nuclides such as ^<14>C and ^<90>Sr would help better understanding of the behavior of lake sediments. It is necessary to analyze another sediment cores of southern and northern Lake Biwa.

    DOI: 10.18999/sumrua.13.71

  410. Diurnal variation of CO2 concentration, Δ14C and δ13C in an urban forest --Estimate of the anthropogenic and biogenic CO2 contributions--. Reviewed

    Takahashi, H., Konohira, E., Hiyama, T., Minami, M., Nakamura, T. and Yoshida, N.

    Tellus   Vol. 54B   page: 97-109   2002

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  411. 化石骨の脱灰処理条件の検討

    南 雅代・中村俊夫

    名古屋大学加速器質量分析業績報告書   Vol. XIII   page: 177-185   2002

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  412. 琵琶湖南湖の湖底堆積物のSr同位体比

    南 雅代・小田寛貴・小島貞男・横田喜一郎・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIII   page: 71-81   2002

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  413. Isotope diluted neutron activation analysis (ID-NAA) for quantitative analysis of PGEs and Re

    Tanaka Tsuyoshi, Senda Ryouko, Shibata Sinnosuke, Minami Masayo, Tanimizu Masaharu

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 49 ( 0 ) page: 209 - 209   2002

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    DOI: 10.14862/geochemproc.49.0.209.0

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  414. Strontium isotope ratio of sediments from Lake Biwa

    Minami Masayo, Oda Hirotaka, Kozima Sadao, Yokota Kiichiro, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 49 ( 0 ) page: 187 - 187   2002

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    DOI: 10.14862/geochemproc.49.0.187.0

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  415. Carbon, nitrogen and strontium isotope compositions of fossil bones from the bottom of lake or sea

    Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 49 ( 0 ) page: 142 - 142   2002

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    DOI: 10.14862/geochemproc.49.0.142.0

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  416. AMS <14>^C ages of deer and human bones collected from British Columbia

    Minami Masayo, Chisholm Brian, Muto Hiroo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 12 ) page: 169 - 179   2001.3

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    We measured ^<14>C ages, carbon and nitrogen stable isotopic ratios of gelatin-collagens extracted from deer and human bones at British Columbia, Canada. The deer bone samples, samples #1〜#3,come from a site in the interior of British Columbia, designated as DhRa-02 site. The human bone samples, samples #4〜#6,are from the Pender Canal site, on North Pender Island, British Columbia. In general, reliable ^<14>C ages, carbon and nitrogen stable isotopic ratios can be obtained for collagens extracted from fossil bones, provided that the collagens have been preserved well from weathering in nature. Experimental yields of gelatin-collagens were higher than 0.7%, except for sample #1 with 0.25%. For sample #1,we tried to extract amino acid fractions by hydrolyzation and XAD-2 treatment and to measure its ^<14>C age. The age is the same as that of gelatin-collagen, about 1200 yrBP. Samples #1 and #2 are situated stratigraphically above a volvcanic ash, identified as Mazama tephra ca 6800 yrBP, and have post-ash dates, 1260 and 3010 yrBP, respectively. Sample #3 shows 3820 yrBP, younger than the age of Mazama tephra, though #3 comes from a pre-ash layer. Samples #4〜#6 have relatively high gelatin yields of 6〜9%, and show the ^<14>C ages of 3120〜3550 yrBP. The CO_2 yields from the gelatin-collagens of samples #1〜#6 are over 41%, consistent with the value of 40〜50% for gelatin-collagen extracted from fresh bones. Thus, the ^<14>C ages, carbon and nitrogen stable isotopic ratios obtained for the gelatin-collagens seem to be reliable. The deer bone samples #1〜#3 demonstrate δ^<13>C value of 〜-21‰ and δ^<15>N value of +5〜+8‰, which are the values of C3 millets. On the other hand, the human bone samples #4〜#6 show relatively high δ^<13>C value of -13‰ and δ^<15>N value of +18‰. It is thought that they ate marine products such as fishes and shellfishes, with δ^<13>C value of -15〜-20‰ and δ^<15>N value of +15〜+20‰, when they were alive. The high δ^<13>C and δ^<15>N values for the human bones are caused by the food resources.

    DOI: 10.18999/sumrua.12.169

  417. Carbon-14 terrestrial ages of Antarctic meteorites with a Tandetron AMS at Nagoya University

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 12 ) page: 134 - 145   2001.3

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    Terrestrial age of meteorites gives us important informaion to estimate the terrestrial history of the meteorites. With the advent of AMS, the required sample mass of meteorite for measurement has been reduced as small as 0.1g. As a result, many more ^<14>C measurements have been performed intensively by the Toronto AMS group, Canada, the Arizona AMS group, USA, and so on. In Japan, AMS ^<14>C measurements of meteorites have been scarcely performed, to our regret. We have constructed a system to extract carbon from meteorites using a vacuum-tight RF melting method in order to study ^<14>C activities in meteorites, in a similar method used by the Arizona group. A meteorite powder sample mixed with pure iron chips is combusted in a RF furnace (Leco HF-10) in the presence of purified carbon-free oxygen in a closed vacuum-tight glass line system. The sample gases evolved are passed through MnO_2 and Pt/CuO traps, and then the CO_2 is separated in a liq.N_2 trap, by pumping out oxygen completely. The amount of ^<14>CO_2 is determined by a pressure transducer in a certain volume and diluted with a known amount of ^<14>C-free CO_2. The total CO_2 is graphitized by reducing with hydrogen in a Fe-powder catalyst and the produced graphite is measured of its ^<14>C concentration with a Tandetron accelerator mass spectrometer at the Center for Chronological Research, Nagoya University. Terrestrial ^<14>C ages of two Antarctic meteorites, Y-75102 from the Yamato icefield, ALH-77294 and ALH-77262 from the Allan Hills icefield, were determined. The age of Y-75102 is estimated 4.0±1.0 ka, the age of ALH-77294 is 19.5±1.2 ka, and the age of ALH-77262 is 28.5±0.9 ka. The ^<14>C ages on the meteorites roughly agree with the literature value. However, the results of the small-counter method (Fireman, 1983; Fireman and Norris, 1981) tend to be oldest, the results of the AMS method by Jull et al. (1984,1989b, 1998) are youngest, and our results of the AMS method are intermediate. The difference would be caused by analytical uncertainties, contamination in samples, incomplete fusion of samples and back-ground value in the extraction system. Y-74190,Y-75097 and Y-75108,which are thought to have fallen at the same time as Y-75102,gave similar ages of 〜4 ka, though Y-74190 gave a slightly younger age of 2.8 ka. These four chondrites might have fallen at the same time. Further studies are needed to improve analytical technique : reducing back-ground value of the extraction system and complete combustion of meteorites by such as longer heating time in RF furnace and use of much more combustion accelerator. It is indispensable to measure saturated ^<14>C activity of recently fallen meteorites with our extraction system. Furthermore, shielding or depth corrections are needed for ^<14>C terrestrial age determination of a meteorite sample if the meteoroid was very large or very small. We intend to obtan the other radioisotope data such as ^<10>Be to estimate the shielding effect. By normalizing the saturated activity of ^<14>C to that of ^<10>Be in a meteorite, more correct terrestrial age for the meteorite could be obtained.

    DOI: 10.18999/sumrua.12.134

  418. Measurement of IAEA <14>^C standard materials with the 2nd Tandetron AMS machine at Nagoya University : estimates of precision and accuracy

    Nakamura Toshio, Oda Hirotaka, Niu Etsuko, Ikeda Akiko, Minami Masayo, Takahashi Hiroshi, Ohta Tomoko

    Summaries of Researches using AMS at Nagoya University   ( 12 ) page: 35 - 43   2001.3

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    A Tandetron accelerator mass spectrometer, an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Center for Chronological Research (CCR), Nagoya University. A so-called second generation AMS ^<14>C apparatus manufactured by High Voltage Engineering Europe, BV, the Netherlands has been installed at CCR in 1997 and has been tested of its performance on ^<14>C measurements. The authors present here a brief review of the present performance and status of the Tandetron-I and Tandetron-II AMS systems. The ^<14>C measurement error (one sigma error) of the Tandetron-II is around +/-20-+/-40 years, which is clearly smaller than that of the Tandetron-I (around+/-50-+/-90 years). In addition, the reproducibility tests of ^<14>C measurements for the IAEA C1-C8 ^<14>C standards suggests that accuracy of ^<14>C measurement can be as good as around 0.5%.

    DOI: 10.18999/sumrua.12.35

  419. British Columbiaから採取された獣骨および人骨のAMS14C年代

    南 雅代・Chisholm, B.・武藤宏男・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XII   page: 169-179   2001

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  420. An extraction system to measure carbon-14 terrestial ages of meteorites with a Tandetron AMS at Nagoya University Reviewed

    Minami, M. and Nakamura, T.

    Radiocarbon   Vol. 43 ( 2A ) page: 263-270   2001

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  421. 南極隕石の落下14C年代測定

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XII   page: 134-145   2001

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  422. An extraction system to measure carbon-14 terrestrial ages of meteorites with a tandetron AMS at Nagoya University

    Minami M, Nakamura T

    RADIOCARBON   Vol. 43 ( 2A ) page: 263 - 269   2001

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  423. The procedure and accuracy of INAA for geological materials by new γ-ray counting and data processing system at Radioisotope Center in Nagoya University

    SHIBATA Shin-nosuke, TANAKA Tsuyoshi, MINAMI Masayo, SENDA Ryoko, TAKEBE Masamichi, KACHI Takuya, KONDO Masashi, ODA Shuhei, HAYASHI Takamasa, NISHIZAWA Kunihide, KOJIMA Hisashi

    Bulletin of the Nagoya University Museum   ( 17 ) page: 15 - 32   2001

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    A new gamma-ray counting and data processing system for non-destructive neutron activation analysis has been set up in Radioisotope Center in Nagoya University. The system carry out gamma-ray counting, sample change and data processing automatically, and is able to keep us away from parts of complicated operations in INAA. In this study, we have arranged simple analytical procedure that makes practical works easier than previous. The concrete flow is described from the preparation of powder rock samples to gamma-ray counting and data processing by the new INAA system. Then it is run over that the analyses used two Geological Survey of Japan rock reference samples JB-1a and JG-1a in order to evaluate how the new analytical procedure give any speediness and accuracy for analyses of geological materials. Two United States Geological Survey reference samples BCR-1 and G-2 used as the standard respectively. Twenty two elements for JB-1a and 25 elements for JG-1a were analyzed, the uncertainty are <5% for Na, Sc, Fe, Co, La, Ce, Sm, Eu, Yb, Lu, Hf, Ta and Th, and of <10% for Cr, Zn, Cs, Ba, Nd, Tb and U. This system will enable us to analyze more than 1500 geologic samples per year.

    DOI: 10.18999/bulnum.017.03

  424. AMS radiocarbon age for fossil bone by XAD-2 chromatography method

    Minami M, Nakamura T

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 172   page: 462 - 468   2000.10

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  425. The HVEE Tandetron AMS system at Nagoya University

    Nakamura T, Niu E, Oda H, Ikeda A, Minami M, Takahashi H, Adachi M, Pals L, Gottdang A, Suya N

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 172   page: 52 - 57   2000.10

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  426. Contributions of anthropogenic and biogenic CO_2 to the atmosphere at an urban forest in winter season and their diurnal variations of vertical profiles

    Takahashi Hiroshi A, Konohira Eiichi, Hiyama Tetsuya, Minami Masayo, Takahashi Atsuhiro, Oguri Hideyuki, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 88 - 99   2000.3

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    Diurnal variations of carbon isotopic compositions (Δ^<14>C and δ^<13>C) of atmospheric CO_2 as well as concentration in an urban area on 9 February, 1999 were measured. The carbon isotopic approach in the present study discriminated quantitative contributions from the several CO_2 sources, i.e., background, anthropogenic and biogenic components, in the urban atmosphere. The diurnal variations in vertical profiles in anthropogenic and biogenic components within the forest were estimated, and their contributions were ranged from 1.3 to 15.8% and from 1.6 to 7.8%, respectively. There was a little variation vertically at each time in the respective components, whereas anthropogenic CO_2 fluctuated largely according to the total atmospheric CO_2 variation. On the other hand, the biogenic CO_2 concentration remained relatively constant throughout the day. With regard to the vertical profiles, the biogenic contribution increases from the top to the floor of the forest with smooth gradient, while the anthropogenic contribution shows the mirror image profile against biogenic one. Both of them showed the large gradual change especially during the night.

    DOI: 10.18999/sumrua.11.88

  427. An attempt to measure carbon-14 terrestrial ages of Antarctic meteorites with a Tandetron AMS at Nagoya University

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 100 - 112   2000.3

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    Publisher:Nagoya University  

    Terrestrial age of meteorites gives us important information to estimate the terrestrial history of the meteorites. With the advent of AMS, the required sample mass of meteorite for measurement has been reduced as small as 0.1g. As a result, many more ^<14>C measurements have been performed intensively by the Toronto AMS group, Canada, the Arizona AMS group, USA, and so on. In Japan, AMS ^<14>C measurements of meteorites have been scarcely performed, to our regret. We are now at the early stage of the program for studying ^<14>C activities in meteorites, and constructing a system to extract ^<14>C from meteorites, in a similar method used by the Arizona group. A meteorite powder sample mixed with pure iron chips is combusted in a RF furnace (Leco HF-10) in the presence of purified carbon-free oxygen in a closed vacuum-tight glass line system. The sample gases evolved are passed through MnO_2 and Pt/CuO traps, and then the CO_2 is separated in a liq.N_2 trap, by pumping out oxygen completely. The amount of ^<14>CO_2 is determined by a pressure transducer in a certain volume and diluted with a known amount of ^<14>C^free CO_2. The total CO_2 is graphitized by reducing with hydrogen in a Fe-powder catalyst and the produced graphite is measured of its ^<14>C concentration with a Tandetron accelerator mass spectrometer at the Dating and Materials Research Center, Nagoya University. Extraction yields of CO_2 using the above method which employs RF melting of steel standards of known carbon content were about 90%. The new extraction procedure gave higher extraction yields and older ^<14>C ages than those using the old extraction method. Carbon yields of two Antarctic meteorites (Y-75102 and ALH-77294), however, were significantly low, and the carbon-14 terrestrial ages for the meteorites were different from the reported values. The results might be caused by imperfect combustions of the meteorites and high blanks from the crucible with iron chips alone. Further studies are needed to improve analytical techniques.

    DOI: 10.18999/sumrua.11.100

  428. Carbon and nitrogen isotope fractionations of collagen by chemical treatment : mainly by XAD-2 treatment

    Minami Masayo

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 231 - 238   2000.3

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    XAD-2 rasin is considered a good material to separate quantiatively polar amino acids from less polar fulvic and humic acids, which are predominant sources of error in ^<14>C and stable isotope analysis on collagen of fossil bone. To evaluate if XAD-2 treatment affects carbon and nitrogen isotope values, Minami (1999) measured δ^<13>C and δ^<15>N on several extracted fractions of collagens from modern bovine Achilles heel tendons made of Sigma Chemical and Nacalai Tesque. There were about +1.0‰ difference in δ^<13>C and about -0.1‰ in δ^<15>N between hydrolyzed collagen and XAD-treated collagen hydrolysates from modern collagen standards. On the other hand, the carbon and nitrogen isotope fractionations were about -0.6‰ and +0.3‰ in δ^<15>N, respectively, on animal fossil bones collected from collected from the Awazu submarine archeological site in this study. The C/N ratios, δ^<13>C and δ^<15>N values of extracted fractions : decalcified, hydrolyzed and XAD-treated hydrolysate fractions, vary as chemical extraction proceeded. The change of the isotope values, which differ between fossils and modern collagens, might be caused by purification of collagen, decomposition of a part of collagen, and combined changes in amino acid composition in collagen. The XAD-treatment affected amino acid compositions on both fossils and modern collagen standards. Since there was no difference in both δ^<13>C and δ^<15>N values by XAD-2 treatment on amino acid standards (Minami, 1999), the isotope fractionation with XAD-2 resin on the collagens can not be due to the total isotope variation of individual amino acids, but be due to the change of amino acid compositions. We need to further study the effect of chemical treatment with HCl on carbon and nitrogen isotope ratios of collagen with XAD-2 resin.

    DOI: 10.18999/sumrua.11.231

  429. The <14>^C AMS facility of the Nagoya University : achievements and present status of the Tandetron-I

    Nakamura Toshio, Oda Hirotaka, Ikeda Akiko, Niu Etsuko, Minami Masayo, Yoshioka Shigeo, Ohta Tomoko, Takahashi Hiroshi, Adachi Mamoru

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 38 - 50   2000.3

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    A Tandetron accelerator mass spectrometer, an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Dating and Materials Research Center, Nagoya University. The authors present here a brief review of the present performance and some archaeological and geological applications of the Tandetron-I AMS, as well as a brief introduction to application field of ^<10>Be measurements. After the second AMS machine goes into routine operation, the main purpose of the Tandetron-I AMS will be shifted towards ^<10>Be measurements. Some hardware and software tools are in preparation now for the ^<10>Be measurements.

    DOI: 10.18999/sumrua.11.38

  430. AMS radiocarbon age for fossil bones by XAD-2 chromatography method Reviewed

    Minami, M. and Nakamura, T.

    Nucl.Instr.andMeth.in Phys.Res.   Vol. B172   page: 462-468   2000

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  431. 化学処理によるコラーゲンの炭素・窒素同位体比の変化-主にXAD-2樹脂処理について-

    南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XI   page: 231-238   2000

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  432. 南極隕石の落下14C年代測定の試み

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XI   page: 100-112   2000

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  433. XAD-2樹脂処理法による化石骨のAMS14C年代 Reviewed

    南 雅代・中村俊夫

    第四紀研究   Vol. 39   page: 547-557   2000

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  434. The HVEE Tandetron AMS system at Nagoya University Reviewed

    Nakamura, T., Niu, E., Oda, H., Ikeda, A., Minami, M., Takahashi, H., Adachi, M., Pals, L.

    Nucl.Instr.and Meth.in Phys.Res.   Vol. B172   page: 52-57   2000

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  435. Deriving AMS Radiocarbon Age of Fossil Bone by Pretreatment with XAD-2 Resin. Comparison with the Gelatin Extraction Method.

    Minami Masayo, Nakamura Toshio

    The Quaternary Research (Daiyonki-Kenkyu)   Vol. 39 ( 6 ) page: 547 - 557   2000

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    Accurate radiocarbon (<sup>14</sup>C) and carbon isotope measurements of fossil bones require complete removal of all exogenous carbon. XAD-2 chromatography was used to eliminate the foreign organic matter from bones. The fossil bones used in the experiment were animal bone fragments collected at the Awazu submarine archeological site. The bone samples were demineralized with 0.8M HCl at 4°C, and the acid-insoluble residue was concentrated by centrifugation and lyophilized. The demineralized bone powder was hydrolysed with 6M HCl at 110°C. Solid components were removed by centrifugation before the filtered hydrolysate was passed through the XAD-2 resin used for removal of fulvic acids. In addition, the gelatin extraction method of decalcification in a cellulose tube with 1.2M HCl, followed by heating at 90°C in water was used for the same species to compare the ability of the two methods to remove organic contaminants.<br>The purified hydrolysates obtained from XAD-2 chromatography have more positive δ<sup>13</sup>C values and older <sup>14</sup>C ages than gelatin collagens extracted from hot water. The difference tends to become greater for poorly preserved fossil bones containing less than 0.7% collageneous materials. The fulvic phases give apparently younger ages and significantly more negative δ<sup>13</sup>C values than bone organic carbon. Furthermore, the XAD-treated hydrolysates of gelatin collagens give the same <sup>14</sup>C ages (older than those of gelatin collagens) as the XAD-purified hydrolysates. The result indicates that the gelatin extraction method is sufficient for <sup>14</sup>C dating on well-preserved bones, but insufficient on poorly preserved bones, because hot-water extraction does not totally remove exogenous organic carbon. Therefore, XAD-2 resin is recommended for accurate <sup>14</sup>C and carbon isotope measurements.

    DOI: 10.4116/jaqua.39.547

    CiNii Research

  436. Carbon and nitrogen isotope fractionations of collagen by treatment with XAD-2 adsorption resin

    Minami Masayo

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 235 - 242   1999.3

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    DOI: 10.18999/sumrua.10.235

  437. AMS <14>^C age of a Molar fossil of Maumann's elephant : with XAD-2 resin

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 139 - 148   1999.3

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    The predominant contaminants such as humic and fulvic acids affect ^<14>C date and stable isotope analyses in fossil bone. The XAD-2 treatment of collagen hydrolysate is considered an effective method to eliminate the foreign organic matter from bone. In this study, we have conducted ^<14>C dating, by the XAD-2 method, on a molar fossil of Naumann's elephant (Palaeoloxodon naumanni) collected from the Uwa-sea, offshore Natori-kajitanihana, Nishi-Uwa-gun, Ehime prefecture. The ^<14>C date of 29,200±870 yr BP was already obtained for gelatin collagen by gelatin-extraction method of decalcification in a cellulose tube with 1.2N HCl, followed by heating at 90℃ in water (Nakamura et al., 1998). Three parts of dentine, enamel and cement in the molar fossil were separated for each ^<14>C dating. The samples were decalcificated with 4℃, 0.8N HCl and the acid-insoluble residues were concentrated by centrifugation and lyophilized. The demineralized fractions were hydrolysed with 6N HCl at 110℃. The filtered hydrolysates were passed through the XAD-2 resin to remove fulvic and humic acids. Dentine phase in the molar fossil gives older ^<14>C age than enamel and cement phases. It is thought that the dentine, covered with enamel and cement phases, is better-preserved. The ^<14>C age of the XAD-purified hydrolysates (XAD) is older than that of solution collagen (SC), but coincide with age of gelatin collagen (GC) in dentine phase. Enamel phase gives different C/N ratio, δ ^<13>C and δ ^<15>N values from those of dentine and cement phases, and relatively younger age, which indicates that the majority of enamel protein has decomposed and changed to hydroxyapatite. All fulvic fractions (F) of three phases give significantly younger ages than bone organic carbon. The molar fossil might be well-preserved because of the higher yield (1.22%) of gelatin collagen more than 1%. The gelatin-extraction method is sufficient for ^<14>C dating on the well-preserved fossil.

    DOI: 10.18999/sumrua.10.139

  438. The <14>^C AMS facility of the Nagoya University : present status of the Tandetron-I and -II AMS systems

    Nakamura Toshio, Oda Hirotaka, Ikeda Akiko, Niu Etsuko, Minami Masayo, Yoshioka Shigeo, Ohta Tomoko, Takahashi Hiroshi A, Adachi Mamoru, Pals Ludi

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 5 - 17   1999.3

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    A Tandetron accelerator mass spectrometer, an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Dating and Materials Research Center, Nagoya University. The authors present here a brief review of the present performance and some archaeological and geological applications of the Tandetron-I AMS, as well as a brief introduction to a so-called second generation AMS machine, an AMS ^<14>C dating apparatus, currently of the highest performance, manufactured by High Voltage Engineering Europe, BV, the Netherlands, which has been recently installed at the Dating and Materials Research Center. Results of the recent performance tests of the Tandetron-II AMS machine are briefly described.

    DOI: 10.18999/sumrua.10.5

  439. AMS <14>^C age of Japanese wolf collected from the cave at Mt. Kyozyo in Izumi-mura, Yashiro-gun, Kumamoto Prefecture

    Minami Masayo, Kitamura Naoshi, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 189 - 198   1999.3

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    DOI: 10.18999/sumrua.10.189

  440. AMS 14C age of Japanese wolf collected from the cave at Mt. Kyonojo in Izumi-mura, Yashiro-gun, Kumamoto prefecture

      Vol. X   page: 189-198   1999

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  441. A whole skerton of a Japanese Wolf collected from a cave at Mt. Kyonojo in Izumi-mura, Yatsushiro-gun, Kumamoto Prefecture

      Vol. 11   page: 35-69   1999

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  442. AMS 14C age of a Molar fossil of Naumann's elephant -with XAD-2 resin-

      Vol. X   page: 139-148   1999

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  443. Carbon and nitrogen isotope fractionations of collagen by treatment with XAD-2 adsorption resin

      Vol. X   page: 235-242   1999

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  444. Status Report of ^<14>C Measurements with the First Tandetron AMS at Nagoya University in the Year of 1997 and Installation of a Second-Generation High-Performance AMS System

    NAKAMURA Toshio, ODA Hirotaka, IKEDA Akiko, MINAMI Masayo, ADACHI Mamoru

    Summaries of Researches using AMS at Nagoya University   ( 9 ) page: 126 - 139   1998.3

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    A Tandetrno accelerator mass spectrometer (AMS), an apparatus dedicated to radiocarbon (^<14>C) measurements with high sensitivity, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure ^<14gt;C concentrations of environmental samples as well as ^<14>C dates of geological and archeological materials at the Dating and Materials Research Center (DMRC), Nagoya University. No serious problem has occurred with the machine, which resulted in that 770 samples were measured in 1997,and totally 7,371 samples in various fields have been measured since the installation of the machine. Though the Tandetron AMS has been operated intensively, the number of samples analyzed annually is rather limited to several hundreds which is far smaller than the number of samples brought to the DMRC by many users from various research fields, mainly owing to lower negative current intensity from an ion source (HICONEX-844,modified for loading 18 targets at a time), as well as a rather low throughput of the total system. We could have fortunately introduced a new-generation Tandetron which is manufactured by High Voltage Engineering Europe (HVEE) BV, the Netherlands. Two sets of similar HVEE AMS system have been installed successfully at the University of Groningen, Holland, and at the University of Christian-Albrechts, Kiel, Germany. They have already shown excellent performances in carbon-isotope-ratio measurments : reproducibility of ^<12>C/^<13>C ratio as ±0.1%; error and reproducibility of ^<14>C/^<12>C ratio as ±0.15%-±0.22% and ±0.3%, respectively. We are planning to perform high accuracy and high precision ^<14>C dating of mainly cultural property materials of historical age, archeological and geological samples, by using the new-generation machine.

    DOI: 10.18999/10.19999/sumrua.9.126

  445. AMS ^<14>C Age of Collagen Separated from a Molar Fossil of Naumann's Elephant Collected from the Uwa-sea, Ehime Prefecture

    NAKAMURA Toshio, OHTA Tomoko, MIYAMOTO Masazo, MINAMI Masayo, ODA Hirotaka, IKEDA Akiko

    Summaries of Researches using AMS at Nagoya University   ( 9 ) page: 286 - 297   1998.3

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    We have conducted ^<14>C dating, with a Tandetron accelerator mass spectrometer (AMS) at Nagoya University, on carbon from collagen fractions extracted from a molar tooth fossil of Naumann's elephant (Palaeoloxodon naumanni) collected from the Uwa-sea, offshore Natori-Kajitanihana, Nishi-Uwa-gun, Ehime prefecture. The molar fossil was cleaned on the surface with a steel brush and a dental grinder, treated with 0.5M NaOH solution, and ground into powder. Two sets of the powdered sample, about 3.8g and 4.9g each, were demineralized with 1.2N HCl in a cellulose tube to extract collagen. After demineralization, HCl was completely removed from the tube by dialysis. Then the solution fraction in the tube was separated by centrifuge, and freeze-dried to get a solution-collagen fraction. Solid remains were put in a Pyrex tube with 20ml of distilled water and heated at 90℃ for 10 hours to extract the water soluble gelatin-collagen fraction. Collagen was oxidized, using CuO to produce CO_2,in a Vycor tube at 950℃ for an hour. A small aliquot of the CO_2 was analyzed for its' stable carbon isotope ratio, δ ^<13>C_<PDB>, using a triple-collector mass spectrometer (MAT-252). To produce graphite, the remaining CO_2 was reduced by hydrogen, with an Fe-powder catalyst, in a Vycor tube at 650℃ for several hours. The sample graphite was analyzed for its' ^<14>C/^<13>C ratio, relative to that of an oxalic acid standard (NBS-SRM-4990). In general, reliable ^<14>C dates can be obtained for collagen fractions extracted from the fossil sample, provided that the collagen fractions have been preserved well from weathering in nature. Experimental yields of collagen fractions were relatively high, ranging from 1.22 to 1.51%. The CO_2 yield from the gelatin collagen fraction was 42%, being consistent with the values of 41-42% for gelatin collagen extracted from fresh bone samples. On the other hand, the CO_2 yield from the solution fraction was 25%, being lower than the values of 41-42%. Thus the ^<14>C date of 29,200±870 yr BP, obtained for the gelatin collagen fraction, seems to be reliable and can be assigned as the age of the molar fossil sample, though the ^<14>C date is about 4,000 years older than the value of 24,880±580 yr BP obtained for the solution collagen fraction. The δ ^<13>C_<PDB> values of -20.2‰ for the both gelatin and solution collagen fractions were consistent with accepted δ ^<13>C_<PDB> values, of from -21 to -23‰ for herbivorous mammals.

    DOI: 10.18999/10.19999/sumrua.9.286

  446. Analytical note of stable nitrogen isotopic measurements with MAT-252 mass spectrometer at Dating and Materials Research Center, Nagoya University

    MINAMI Masayo, AOKI Hiroshi, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   ( 9 ) page: 316 - 323   1998.3

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    This paper provides a basic experimental information of stable nitrogen isotopic measurements with MAT-252 mass spectrometer (Finnigan MAT Ltd.) at Dating and Materials Research Center, Nagoya University, and a refining method of N_2 gas from sample gas on vacuum line. The ion output voltage from 28 collector is directly proportional to N_2 gas pressure. In case that ion output voltage from 28 collector of N_2 gas is more than 1.6V, the ratio of [29]/[28] hardly varies according to the output voltage, and the pressure effect on nitrogen isotopic ratios can be disregarded. The 28 ion output voltage of 2.5V (N_2 gas pressure around 38mb) is recommended on normal measurements. Only N_2 gas can be separated and refined from a sample gas by means of molecular sieves on vacuum line for refining CO_2. The δ^<13>C values do not change by collecting N_2.

    DOI: 10.18999/10.19999/sumrua.9.316

  447. Approximate estimation method of the degree of lanthanide tetrad effect and application to the tetrad effects in lanthanide ionic radii

    Minami M, Masuda A

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   Vol. 177   page: 1021 - 1022   1998.1

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  448. Approximate estimation method of the degree of lanthanide letrad effect and application to the tetrad effects in lanthanide ionic radii Reviewed

    Minami, M. and Masuda, A.

    Journal of Magnetism and Magnetic Materials   Vol. 180   page: 1021-1022   1998

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  449. Analytical note of stable nitrogen isotopic measurements with MAT-252 mass spectrometer at Dating and Materials Research Center, Nagoya University

      Vol. IX   page: 316-323   1998

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  450. Isotope fractionation by XAD-2 treatment

      Vol. IX   page: 308-311   1998

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  451. Extraction and radiocarbon dates of amino acids in fossil bones

      Vol. IX   page: 46-54   1998

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  452. Comparison of AMS radiocarbon ages between amino acids and collagens in fossil bones Reviewed

    Minami, M. and Nakamura, T.

    Chinese Science Bulletin   Vol. 43   page: 89   1998

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  453. Y-Ho fractionation and lanthanide tetrad effect observed in cherts

    Minami M, Masuda A, Takahashi K, Adachi M, Shimizu H

    GEOCHEMICAL JOURNAL   Vol. 32 ( 6 ) page: 405 - 419   1998

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  454. Y-Ho fractionation and lanthanide tetrad effect observed in cherts.

    Minami Masayo, Masuda Akimasa, Takahashi Kazuya, Adachi Mamoru, Shmizu Hiroshi

    GEOCHEMICAL JOURNAL   Vol. 32 ( 6 ) page: 405 - 419   1998

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    The abundances of rare earth elements (REE) and Y in cherts were precisely determined by ICP-MS: the Archean Marble Bar Chert from the Pilbara Block, Western Australia, Triassic cherts from central Japan, and Cretaceous deep-sea cherts from central Pacific and the Caribbean Sea. Both of W-type and M-type REE patterns are observed for the studied cherts and, in particular, clear W-type tetrad effect is observed for the Archean Marble Bar banded cherts. Appearance of tetrad effect phenomenon is related to their Fe<sub>2</sub>O<sub>3</sub><sup>∗</sup> (total iron as Fe<sub>2</sub>O<sub>3</sub>) and Al<sub>2</sub>O<sub>3</sub> concentrations. The cherts relatively enriched in Fe<sub>2</sub>O<sub>3</sub><sup>∗</sup> show W-type tetrad effect, while that enriched in Al<sub>2</sub>O<sub>3</sub> tends to show M-type tetrad effect. Therefore, impure clastic detritus in the cherts might be responsible for M-type tetrad effect. It is worthwhile noting that, irrespective of their REE patterns of W-type and M-type tetrad and little tetrad effects, the cherts chiefly show non-chondritic Y/Ho ratios between 13 and 27, negative deviations from chondritic value around 28, in contrast with seawaters and limestones characterized by strongly higher Y/Ho ratios ranging from 50 to 80 than the chondritic value. Among the cherts, the lowest Y/Ho ratios between 13 and 18 are observed for the Marble Bar yellowish gray cherts, which suffered disturbance of geochemical features by thermal events at ca. 2.5 Ga. It has been widely recognized that both of Y-Ho fractionation and lanthanide tetrad effect are phenomena observed in the marine environment. However, Y-Ho fractionation is not closely associated with lanthanide tetrad effect. Y-Ho fractionation is suggested to be related to the ligand that dominates the chemical complex in aqueous system, from our results and the observation that silicate-rich part and carbonate-rich part in banded iron formations show lower and higher Y/Ho ratios than the chondritic value, respectively. On the other hand, tetrad effect in the cherts is related to impurity minerals such as Fe-oxides and clastic detritus, with which REE might well by associated. It is interesting that the Archean banded charts, not containing organic nor detrital materials, display clear W-type tetrad effect coupled with slightly lower Y/Ho ratios than chondritic ratio.

    DOI: 10.2343/geochemj.32.405

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    CiNii Research

  455. Y-Ho fractionation and lanthanide tetrad effect observed in cherts

    Minami M, Masuda A, Takahashi K, Adachi M, Shimizu H

    GEOCHEMICAL JOURNAL   Vol. 32 ( 6 ) page: 405 - 419   1998

  456. Status Report of <14>^C Measurements with a Tandetron AMS at Nagoya University in the Year of 1996 and Installation of a second-Generation High-Performance AMS System

    Nakamura Toshio, Ikeda Akiko, Ohta Tomoko, Minami Masayo, Adachi Mamoru

    Summaries of Researches using AMS at Nagoya University   ( 8 ) page: 56 - 67   1997.3

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    A Tandetron accelerator mass spectrometer (AMS), an apparatus dedicated to radiocarbon (^<14>C) measurements with high sensitivity, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archeological materials at the Dating and Materials Research Center (DMRC), Nagoya University. No serious problem has occurred with the machine, which resulted in that 708 samples were measured in 1996,and totally 6,300 samples in various fields have been measured since the installation of the machine. Though the Tandetron AMS has been operated intensively, the number of samples analyzed annually is rather limited to several hundreds which is far smaller than the number of samples brought to the DMRC by many users from various research fields, mainly owing to lower negative current intensity from an ion source (HICONEX-844,modified for loading 18 targets at a time), as well as a rather low throughput of the total system. We could have fortunately introduced a new-generation Tandetron which is manufactured by High Voltage Engineering Europe (HVEE) BV, the Netherlands. Two sets of similar HVEE AMS system have been installed successfully at University of Groningen, Holland, and at University of Christian-Albrechts, Kiel, Germany. They have already shown excellent performances in carbon-isotope-ratio measurements : reproducibility of ^<12>C/^<13>C ratio as ア0.1% ; error and reproducibility of ^<14>C/^<12>C ratio as ア0.15-0.22% and ア0.3%, respectively. We are planning to perform high accuracy and high precision ^<14>C dating of mainly cultural property materials of historical age, archeological and geological samples, by using the new-generation machine.

    DOI: 10.18999/sumrua.8.56

  457. AMS Radiocarbon Dates of Wood, Mammalian Bone and Shell Fossils Collected from the Same Horizons of a Shell Mound Excavated at Awazu Submarine Archeological Site, Shiga Prefecture

    Nakamura Toshio, Ohta Tomoko, Iba Isao, Minami Masayo, Ikeda Akiko

    Summaries of Researches using AMS at Nagoya University   ( 8 ) page: 237 - 246   1997.3

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    The Awazu submarine archeological site, 2-3 meters below the water surface, is located at southern basin of Lake Biwa, near the mouth of Seta River flowing out of the Lake Biwa. A shell mound was excavated during the 1990-1991 year survey of the site. Seven sets of wood, mammalian bone, and shell fossil samples collected from the same layers of the shell mound were dated with the AMS radiocarbon method. The ^<14>C dates for each of the three kinds of samples did not show big difference between the seven layers. This tendency is consistent with the fact that the shell mound was formed within ca. 100 years, because pottery fragments of the Funamoto-I type, which corresponds to early stage of the middle Jomon, were preferentially discovered from this shell mound. However, ^<14>C dates were systematically different among three types of samples : shell fossil samples showed the oldest dates from 4800-5080yr BP, except for a very young date (4630+/-80yrBP); wood samples did the middle ones (4570-4760yrBP); and bone fragment samples did the youngest ones (4090-4430yrBP). The reasons for the difference of ^<14>C dates among the three kinds of samples collected from the same horizons are not clarified yet. Shell carbonate originates from dissolved inorganic carbon in the lake water, which carbon was produced partly in the dissociation of old organic materials in the lake sediment and was also added with dead carbon from limestone rock surrounding Lake Biwa. In addition, younger carbon contaminated the bone samples when the samples were in the sediment may not have been removed completely during chemical preparation procedures of the samples.

    DOI: 10.18999/sumrua.8.237

  458. An attempt on accurate radiocarbon and carbon isotope measurements of fossil bone

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 8 ) page: 247 - 253   1997.3

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    Publisher:Nagoya University  

    Accurate radiocarbon (^<14>C) and carbon isotope measurements on fossil bones require that all exogenous carbon be removed. The remove the foreign organic carbon and obtain reliable ^<14>C ages from bones, XAD-2 chromatography method was examined. The fossil bones used in the experiment were bone fragments collected from the Awazu submarine archeological site. The bone samples were demineralized with 4℃ 0.8N HCl and the acid-insoluble residue was concentrated by centrifugation and lyophilized. The demineralized bone powder was hydrolysed with 6N HCl at 110℃. Solids were removed by centrifugation before the filtered hydrolysate was passed through the XAD-2 resin to remove fulvic and humic acids. δ^<13>C values and ^<14>C ages for three fractions of decalcified bone powder, XAD-treated hydrolysate, and fulvic and humic acids in demineralization-hydrolysis-XAD treatment procedure. XAD-purified hydrolysates have more positive δ^<13>C values and older ^<14>C ages than gelatin collagen extracted by conventional method. The δ^<13>C values in fulvic and humic phases are significantly more negative than collagen fractions. Conventional collagen extraction method is sufficient for ^<14>C dating on well-preserved bones but insufficient on poorly-preserved bones, because the method does not totally remove exogenous organic carbon. XAD-2 resin is recommended for accurate ^<14>C and carbon isotope measurements.

    DOI: 10.18999/sumrua.8.247

  459. *Approximate estimation of the degree of lanthanide tetrad effect from the data potentially involving all lanthanides Reviewed

    Minami, M. and Masuda, A.

    Geochemical Journal   Vol. 31   page: 125-133   1997

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  460. An attempt on accurate radiocarbon and carbon isotope measurements of fossil bone

      Vol. VIII   page: 247-253   1997

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  461. Geochronological and geochemical study for the Archean cherts in Pilbara Block, Western Australia

    Minami Masayo

    Chikyukagaku   Vol. 31 ( 4 ) page: 244 - 244   1997

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    Language:Japanese   Publisher:The Geochemical Society of Japan  

    DOI: 10.14934/chikyukagaku.31.244

    CiNii Books

    CiNii Research

  462. Geochemical mapping of the northern area of Toyota City, Aichi Prefecture, central Japan: Distinct chemical characteristics of stream sediments between granitic and sedimentary rock areas Reviewed

    Tanaka T, Kawabe I, Yamamoto K, Iwamori H, Hirahara Y, Mimura K, Asahara Y, Minami M, Ito T, Dragusanu C, Miura N, Aoki H, Ohta A, Togami K, Toriumi T, Yohko M, Sakakibara T, Tanimizu M, Mizutani Y, Miyanaga N, Murayama M, Takayanagi Y

    The Journal of Earth and Planetary Sciences, Nagoya University   Vol. 43   page: 27–47   1996

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    Language:English  

    DOI: 10.18999/joueps.43.27

    Other Link: http://orcid.org/0000-0002-0770-3273

  463. Experimental studies on behaviors of lanthanides in interaction between water and basaltic rock grains : Bearings of tetrad effect on conditions Reviewed

    Minami, M., Matsuda, N. and Masuda, A.

    Proceedings of Japan Academy   Vol. 71B   page: 10-14   1995

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  464. Two Archean Sm-Nd ages of 3.2 and 2.5 Ga for the Marble bar Chert, Warrawoona Group, Pilbara Block, Western Australia Reviewed

    Minami, M., Shimizu, H., Masuda, A. and Adachi, M.

    Geochemical Journal   Vol. 29   page: 347-362   1995

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  465. Two Archean Sm-Nd ages of 3.2 and 2.5 Ga for the Marble Bar Chert, Warrawoona Group, Pilbara Block, Western Australia

    Minami M, Shimizu H, Masuda A, Adachi M

    GEOCHEMICAL JOURNAL   Vol. 29 ( 6 ) page: 347 - 362   1995

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  466. Approximate estimation of the degree of lanthanide tetrad effect from precise but partially void data measured by isotope dilution and an electron configuration model to explain the tetrad phenomenon. Reviewed

    Masuda, A., Matsuda, N., Minami, M. and Yamamoto, H.

    Proceedings of Japan Academy   Vol. 70B   page: 10-14   1994

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  467. La-Ce and Sm-Nd systematics of siliceous sedimentary rocks : A Clue to marine environment in their deposition Reviewed

    Shimizu, H., Amano (Minami), M. and Masuda, A.

    Geology   Vol. 19   page: 369-371   1991

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▼display all

Books 4

  1. 研究するって面白い!科学者になった11人の物語・「地球化学」と歩む

    南 雅代( Role: Contributor)

    岩波書店  2016.10 

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    Total pages:176   Language:Japanese Book type:General book, introductory book for general audience

  2. 考古学を科学する・中国・北朝鮮国境白頭山の10世紀巨大噴火−放射性炭素法による高精度年代測定

    中村俊夫・奥野 充・小田寛貴・南 雅代( Role: Joint author)

    臨川書店  2011 

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    Language:Japanese

  3. 考古学を科学する・鎌倉中世人骨・獣類骨の14C年代測定

    南 雅代, 中村俊夫( Role: Joint author)

    臨川書店  2011 

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    Responsible for pages:233-244   Language:Japanese

  4. 地球化学講座8 地球化学分析法・4. 11加速器質量分析

    中村俊夫・南 雅代( Role: Joint author)

    培風館  2010 

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    Language:Japanese

MISC 251

  1. 第5章第8節「土壌資料のストロンチウム同位体分析」 Invited

    若木重行・南 雅代

    松原市立部遺跡発掘調査報告書     page: 78 - 80   2021.3

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    Authorship:Last author   Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  2. 第5章第6節「火葬骨・木炭の放射性炭素年代測定」 Invited

    南 雅代

    松原市立部遺跡発掘調査報告書     page: 68 - 72   2021.3

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    Authorship:Lead author   Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  3. 第5章第7節「人骨のストロンチウム同位体分析」 Invited

    若木重行・南 雅代

    松原市立部遺跡発掘調査報告書     page: 73 - 77   2021.3

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  4. 利根川河床の前橋泥流から見出された木片群の14C年代 Reviewed

    佐藤興平・南 雅代・安倍 久・中村俊夫・武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  5. 高崎市のボーリングコアから見出された木片の14C年代と高崎ー前橋地域の後期更新世の地層形成史における意義 Reviewed

    佐藤興平・南 雅代・中村俊夫

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  6. 吾妻川上流域の火山泥流堆積物に含まれる木片の14C年代(予察) Reviewed

    佐藤興平・南 雅代・安部 久・中村俊夫・中村庄八・黒岩利明・嶋村 明・武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  7. 前橋の敷島公園に産する巨石「お艶ヶ岩」の起源 Reviewed

    佐藤興平・南 雅代・池田信二・安倍 久・小島純一・武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  8. 利根川河床の前橋泥流から見出された木片群の14C年代 Reviewed

    佐藤興平, 南 雅代, 安倍 久, 中村俊夫, 武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  9. 前橋の敷島公園に産する巨石「お艶ヶ岩」の起源 Reviewed

    佐藤興平, 南 雅代, 池田信二, 安倍 久, 小島純一, 武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  10. 吾妻川上流域の火山泥流堆積物に含まれる木片の14C年代(予察) Reviewed

    佐藤興平, 南 雅代, 安部 久, 中村俊夫, 中村庄八, 黒岩利明, 嶋村 明, 武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  11. 第5章第6節「火葬骨・木炭の放射性炭素年代測定」 Invited

    南 雅代

    松原市立部遺跡発掘調査報告書     page: 68 - 72   2021.3

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    Authorship:Lead author   Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  12. 第5章第7節「人骨のストロンチウム同位体分析」 Invited

    若木重行, 南 雅代

    松原市立部遺跡発掘調査報告書     page: 73 - 77   2021.3

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    Authorship:Last author   Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  13. 第5章第8節「土壌資料のストロンチウム同位体分析」 Invited

    若木重行, 南 雅代

    松原市立部遺跡発掘調査報告書     page: 78 - 80   2021.3

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    Authorship:Last author   Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  14. 高崎市のボーリングコアから見出された木片の14C年代と高崎ー前橋地域の後期更新世の地層形成史における意義 Reviewed

    佐藤興平, 南 雅代, 中村俊夫

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  15. 米国グリーンリバー湖成層に見られる有機物起源チャートの成因

    隈隆成, 長谷川精, 吉田英一, 南雅代

    名古屋大学年代測定研究   Vol. 5   2021

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  16. Chemical analysis of cremated human bones excavated from the Tatsube archaeological site, Matsubara City, Osaka Prefecture

    M. Minami, S. Wakaki, A. Sato, N. Kashinoki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_168

  17. Radiocarbon dating of bone remains excavated from archaeological site. Invited

    Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_193

  18. Dietary and inhabited area estimated from Sr isotopic analysis of cremated bones excavated from the Ishibotokedani site in Binmanji Temple, Shiga Prefecture

    Sawada Hitoshi, Wakaki Shigeyuki, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_198

  19. Establishment of a new CO2 extraction method for radiocarbon analysis of dissolved inorganic carbon in water samples and comparison of it with the conventional methods

    Sato Rina, Takahashi Hiroshi, Handa Hiroko, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_157

  20. Paleoenvironmental reconstruction of northwest Iran based on <sup>14</sup>C age and chemical compositions of travertines International coauthorship

    Zhang Yubo, Asahara Yoshihiro, Minami Masayo, Kaneko Masaki, Amin-Rasouli Hadi, Azizi Hossein

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_200

  21. Strontium isotope dating of carbonate concretions International coauthorship

    Asahara Yoshihiro, Yoshida Hidekazu, Yamamoto Koshi, Katsuta Nagayoshi, Minami Masayo, Metcalfe Richard

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_166

  22. Isotopic and geochemical assessment of travertine springs in northwestern Iran International coauthorship

    Kaneko Masaki, Asahara Yoshihiro, Minami Masayo, Kurita Naoyuki, Azizi Hossein, Amin―Rasouli Hadi, Zhang Yubo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_126

  23. 北海道東部(阿寒湖 No.1・網走湖豊住No.1)の 2 つのボーリングコアの花粉分析とAMS 14C年代測定による後期更新世と完新世の植生変遷

    星野フサ・岡 孝雄・春木雅寛・中村俊夫・南 雅代・近藤 務・米道 博・関根達夫・山崎芳樹・若松幹男

    名古屋大学年代測定研究   Vol. 4   page: 10 - 26   2020.6

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  24. 名古屋大学タンデトロンAMS14Cシステムの現状と利用(2019)

    中村俊夫・南 雅代・小田寛貴・池田晃子・山根雅子・西田真砂美・若杉勇輝・佐藤里名・澤田 陸・酢屋徳啓・北川浩之

    名古屋大学年代測定研究   Vol. 4   page: 63 - 71   2020.6

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  25. 水試料の放射性炭素濃度測定のための手法改良

    高橋 浩・半田宙子・佐藤里名・中村俊夫・南 雅代

    名古屋大学年代測定研究   Vol. 4   page: 1 - 8   2020.6

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  26. 滋賀県多賀町敏満寺遺跡石仏谷墓跡出土火葬骨のSr同位体分析

    澤田 陸・若木重行・南 雅代

    名古屋大学年代測定研究   Vol. 4   page: 53 - 58   2020.6

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  27. 鹿児島県湧水町の三日月池の堆積物の層序と年代

    長友拓磨・奥野 充・藤木利之・中村俊夫・南 雅代・成尾英仁・寺田仁志

    名古屋大学年代測定研究   Vol. 4   page: 35 - 38   2020.6

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  28. 令和元年度 名古屋大学総長裁量経費 地域貢献事業「名古屋周辺の地震・活断層を学ぼう」活動報告

    南 雅代・鷺谷 威・小坂由紀子・加藤丈典・若杉勇輝・北川浩之・栗田直幸・山根雅子・西田真砂美・澤田 陸・榎並正樹

    名古屋大学年代測定研究   Vol. 4   page: 76 - 83   2020.6

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  29. 鹿児島県湧水町の三日月池の堆積物の層序と年代

    長友拓磨, 奥野 充, 藤木利之, 中村俊夫, 南 雅代, 成尾英仁, 寺田仁志

    名古屋大学年代測定研究   Vol. 4   page: 35 - 38   2020.6

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  30. 令和元年度 名古屋大学総長裁量経費 地域貢献事業「名古屋周辺の地震・活断層を学ぼう」活動報告

    南 雅代, 鷺谷 威, 小坂由紀子, 加藤丈典, 若杉勇輝, 北川浩之, 栗田直幸, 山根雅子, 西田真砂美, 澤田 陸, 榎並正樹

    名古屋大学年代測定研究   Vol. 4   page: 76 - 83   2020.6

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  31. 北海道東部(阿寒湖 No.1・網走湖豊住No.1)の 2 つのボーリングコアの花粉分析とAMS 14C年代測定による後期更新世と完新世の植生変遷

    星野フサ・岡 孝雄, 春木雅寛, 中村俊夫, 南 雅代, 近藤 務, 米道 博, 関根達夫, 山崎芳樹, 若松幹男

    名古屋大学年代測定研究   Vol. 4   page: 10 - 26   2020.6

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  32. 名古屋大学タンデトロンAMS14Cシステムの現状と利用(2019)

    中村俊夫, 南 雅代, 小田寛貴, 池田晃子, 山根雅子, 西田真砂美, 若杉勇輝, 佐藤里名, 澤田 陸, 酢屋徳啓, 北川浩之

    名古屋大学年代測定研究   Vol. 4   page: 63 - 71   2020.6

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  33. 水試料の放射性炭素濃度測定のための手法改良

    高橋 浩, 半田宙子, 佐藤里名, 中村俊夫, 南 雅代

    名古屋大学年代測定研究   Vol. 4   page: 1 - 8   2020.6

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  34. 滋賀県多賀町敏満寺遺跡石仏谷墓跡出土火葬骨のSr同位体分析

    澤田 陸, 若木重行, 南 雅代

    名古屋大学年代測定研究   Vol. 4   page: 53 - 58   2020.6

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  35. 関東山地北西縁の下仁田地域に産する南蛇井層:ジルコンのU−Pb年代による予察 Reviewed

    佐藤興平・竹内 誠・李 雨嘯・南 雅代・柴田 賢

    群馬県立自然史博研究報告   Vol. 24   page: 53 - 70   2020.3

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  36. 巨石のSr同位体と埋没木片の14C年代からみた前橋泥流 Invited

    佐藤興平・南 雅代・柴田 賢・武者 巌

    群馬県立自然史博物館研究報告   Vol. 24   page: 31 - 42   2020.3

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  37. 榛名・小野子・子持火山の基盤を構成する火山岩類の岩石化学的特徴:天然記念物「岩神の飛石」との比較 Reviewed

    佐藤興平・南 雅代

    群馬県立自然史博物館研究報告   Vol. 24   page: 43 - 52   2020.3

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  38. 関東山地北西縁の下仁田地域に産する南蛇井層:ジルコンのU−Pb年代による予察 Reviewed

    佐藤興平, 竹内 誠, 李 雨嘯, 南 雅代, 柴田 賢

    群馬県立自然史博研究報告   Vol. 24   page: 53 - 70   2020.3

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  39. 巨石のSr同位体と埋没木片の14C年代からみた前橋泥流 Invited

    佐藤興平, 南 雅代, 柴田 賢, 武者 巌

    群馬県立自然史博物館研究報告   Vol. 24   page: 31 - 42   2020.3

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