Faculty Profiles - NAGAO, Masahiro

Estimation of Material Stocks Based on Building Structure Determination Using Image Recognition

Two-stage electrolysis of H2O and CO2 to methanol: CO2-to-methane reduction at the cathode and subsequent methane-to-methanol oxidation at the anode Reviewed

Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro, Dongwen Zhou, Siyuan Chen

JOURNAL OF MATERIALS CHEMISTRY A Vol. 10 ( 42 ) page： 22718 - 22729 2022.11

NAGAO Masahiro, TAKEUCHI Junki, TAMASAKI Miyu, MORITA Masato, KITA Eisuke, SHIRAKAWA Hiroaki, TANIKAWA Hiroki

Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) Vol. 78 ( 6 ) page： II_19 - II_25 2022

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Estimation of material stock of buildings in urban areas is important for recycling and proper disposal of resources. For the purpose of more accurate stock estimation, glasses and walls were extracted from images of building walls using a machine learning model of image recognition, and then calculated the percentage of glass in the walls based on the number of pixels in each. The classification of building structures based on the glass percentage showed that a threshold value of 67% is suitable for classifying steel-framed buildings with curtain walls. Classification result obtained from 262 buildings around Nagoya Station was used for stock estimation, and the result was compared with those calculated by the method proposed by previous study. The estimated amount of concrete decreased by 18% and the estimated amount of steel increased by 325%.

DOI： 10.2208/jscejer.78.6_ii_19

Fuel cell and electrolyzer using plastic waste directly as fuel

Ionic conductive and photocatalytic properties of cementitious materials: calcium silicate hydrate and calcium aluminoferrite International coauthorship

Nagao Masahiro, Kobayashi Kazuyo, Jin Yongcheng, Maruyama Ippei, Hibino Takashi

JOURNAL OF MATERIALS CHEMISTRY A Vol. 8 ( 30 ) page： 15157 - 15166 2020.8

Hori Tetsuya, Kobayashi Kazuyo, Teranishi Shinya, Nagao Masahiro, Hibino Takashi

WASTE MANAGEMENT Vol. 102 page： 30 - 39 2020.2

A Cellulose Electrolysis Cell with Metal-Free Carbon Electrodes International coauthorship

Li Yaorong, Nagao Masahiro, Kobayashi Kazuyo, Jin Yongcheng, Hibino Takashi

CATALYSTS Vol. 10 ( 1 ) 2020.1

Humidity Driven Transition from Insulator to Ionic Conductor in Portland Cement

Nagao Masahiro, Kobayashi Kazuyo, Hori Tetsuya, Li Yaorong, Hibino Takashi

MATERIALS Vol. 12 ( 22 ) 2019.11

Addition of Docetaxel to Oral Fluoropyrimidine Improves Efficacy in Patients With Stage III Gastric Cancer: Interim Analysis of JACCRO GC-07, a Randomized Controlled Trial

Kazuhiro Yoshida, Yasuhiro Kodera, Mitsugu Kochi, Wataru Ichikawa, Yoshihiro Kakeji, Takeshi Sano, Narutoshi Nagao, Masazumi Takahashi, Akinori Takagane, Takuya Watanabe, Masahide Kaji, Hiroshi Okitsu, Takashi Nomura, Takanori Matsui, Takaki Yoshikawa, Jin Matsuyama, Makoto Yamada, Seiji Ito, Masahiro Takeuchi, Masashi Fujii

Journal of Clinical Oncology Vol. 37 ( 15 ) page： 1296 - 1304 2019.5

Language：English Publishing type：Research paper (scientific journal) Publisher：American Society of Clinical Oncology (ASCO)

<jats:sec><jats:title>PURPOSE</jats:title><jats:p> S-1 is a standard postoperative adjuvant chemotherapy for patients with stage II or III gastric cancer in Asia. Neoadjuvant or perioperative strategies dominate in Western countries, and docetaxel has recently shown significant survival benefits when combined with other standard regimens in advanced cancer and perioperative settings. </jats:p></jats:sec><jats:sec><jats:title>PATIENTS AND METHODS</jats:title><jats:p> This randomized phase III study was designed to prove the superiority of postoperative S-1 plus docetaxel over S-1 alone for R0 resection of pathologic stage III gastric cancer. The sample size of 1,100 patients was necessary to detect a 7% increase in 3-year relapse-free survival as the primary end point (hazard ratio, 0.78; 2-sided α = .05; β = .2). </jats:p></jats:sec><jats:sec><jats:title>RESULTS</jats:title><jats:p> The second interim analysis was conducted when the number of events reached 216 among 915 enrolled patients (median follow-up, 12.5 months). Analysis demonstrated the superiority of S-1 plus docetaxel (66%) to S-1 (50%) for 3-year relapse-free survival (hazard ratio, 0.632; 99.99% CI, 0.400 to 0.998; stratified log-rank test, P < .001), and enrollment was terminated as recommended by the independent data and safety monitoring committee. Incidences of grade 3 or greater adverse events, particularly neutropenia and leukopenia, were higher in the S-1 plus docetaxel group, but all events were manageable. </jats:p></jats:sec><jats:sec><jats:title>CONCLUSION</jats:title><jats:p> Addition of docetaxel to S-1 is effective with few safety concerns in patients with stage III gastric cancer. The present findings may also be applicable in countries in which perioperative adjuvant chemotherapy or chemoradiation is not standard. </jats:p></jats:sec>

DOI： 10.1200/jco.18.01138

Electrolysis of humidified methane to hydrogen and carbon dioxide at low temperatures and voltages

Hori Tetsuya, Ma Qiang, Kobayashi Kazuyo, Nagao Masahiro, Teranishi Shinya, Hibino Takashi

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY Vol. 44 ( 5 ) page： 2454 - 2460 2019.1

Intermediate-temperature electrolysis of energy grass Miscanthus sinensis for sustainable hydrogen production

Ito Masaya, Hori Tetsuya, Teranishi Shinya, Nagao Masahiro, Hibino Takashi

SCIENTIFIC REPORTS Vol. 8 ( 1 ) page： 16186 2018.11

Direct electrolysis of waste newspaper for sustainable hydrogen production: an oxygen-functionalized porous carbon anode

Hibino Takashi, Kobayashi Kazuyo, Ito Masaya, Nagao Masahiro, Fukui Mai, Teranishi Shinya

APPLIED CATALYSIS B-ENVIRONMENTAL Vol. 231 page： 191 - 199 2018.9

Efficient Hydrogen Production by Direct Electrolysis of Waste Biomass at Intermediate Temperatures

Takashi Hibino, Kazuyo Kobayashi, Masaya Ito, Qiang Ma, Masahiro Nagao, Mai Fukui, Shinya Teranishi

ACS Sustainable Chemistry & Engineering Vol. 6 ( 7 ) page： 9360 - 9368 2018.7

Hydrogen Production by Direct Lignin Electrolysis at Intermediate Temperatures

Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro, Teranishi Shinya

CHEMELECTROCHEM Vol. 4 ( 12 ) page： 3032 - 3036 2017.12

High Performance Anode for Direct Cellulosic Biomass Fuel Cells Operating at Intermediate Temperatures

Hibino Takashi, Kobayashi Kazuyo, Lv Peiling, Nagao Masahiro, Teranishi Shinya

Bulletin of the Chemical Society of Japan Vol. 90 ( 9 ) page： 1017 - 1026 2017.9

Language：English Publishing type：Research paper (scientific journal) Publisher：The Chemical Society of Japan

Cellulosic biomass resources have considerable potential as a renewable energy source that can be used for the cogeneration of electricity and heat. The utilization of these resources generally requires three major systematic processes: gasification, gas processing, and gas utilization. If a power generator could operate using wood resources directly as fuels, then this system could be significantly simplified, thereby reducing initial equipment cost and enhancing application flexibility. An intermediate-temperature fuel cell could possibly realize such an operation; however, the fuel-cell characteristics, especially the catalytic activity of the Pt/C anode, are not sufficient at present. In this study, we attempted to improve the anode activity by alloying Pt with other metals, followed by optimization of the alloy in terms of its atomic ratio and content. The resulting PtFe/C anode yielded higher power densities (37–42 mW cm−2) and energy densities (125–169 Wh kg−1) at 250 °C for fuels composed of cypress, tissue paper, and cotton, compared to those obtained using the Pt/C anode, despite its smaller Pt loading.

DOI： 10.1246/bcsj.20170163

An Intermediate-Temperature Biomass Fuel Cell UsingWood Sawdust and Pulp Directly as Fuel

Grammatical evolution using two-dimensional gene for symbolic regression: an advanced improvement with conditional statement grammar Reviewed

Hideyuki Sugiura, Masahiro Nagao, Yi Zuo, Eisuke Kita

International Journal of Computational Intelligence Studies Vol. 5 ( 3-4 ) page： 237-251 2017.4

Balancing setup workers' load of flexible job shop scheduling using hybrid genetic algorithm with tabu search strategy Reviewed

Yasuhiko Morinaga, Masahiro Nagao, Mitsuru Sano

International Journal of Decision Support Systems Vol. 2 ( 1-3 ) page： 71-90 2017.1

Hibino Takashi, Kobayashi Kazuyo, Lv Peiling, Nagao Masahiro, Teranishi Shinya, Mori Toshiyuki

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 164 ( 6 ) page： F557 - F563 2017

NOx Sensing Characteristics of Semiconductor Gas Sensors under Controlled Oxygen Activity Conditions Using a Proton-Conducting Electrolyte

Nagao Masahiro, Kobayashi Kazuyo, Lv Peiling, Teranishi Shinya, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 164 ( 9 ) page： B397 - B402 2017

Grammatical Evolution using Tree Representation Learning

Shunya Maruta, Yi Zuo, Masahiro Nagao, Hideyuki Sugiura, Eisuke Kita

The 24th International Conference On Neural Information Processing Vol. 10637 page： 346 - 355 2017

Grammatical evolution using two-dimensional gene for symbolic regression: An advanced improvement with conditional statement grammar

Sugiura H., Nagao M., Zuo Y., Kita E.

International Journal of Critical Infrastructures Vol. 13 ( 1 ) page： 237 - 251 2017

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：International Journal of Critical Infrastructures

Symbolic regression problems can be solved using grammatical evolution (GE), an evolutionary computation (EC) method, to find a function that coincides satisfactorily with the given datasets. The evolutional approach of GE is based on the grammar learning paradigm, which can translate the genotype (binary digit) into the phenotype (terminals and non-terminals). Unlike traditional codons in a genotype, the fittest codons in phenotype represented by the Backus-Naur form (BNF) are difficult for next generation genes to inherit the traits of parents, accounting for crossover and mutation. For this issue, this article presents a proposal of an advanced improvement to GE using a two-dimensional gene (GE2DG). In contrast to multi-chromosomal GE (GEMC), our proposal not only encloses the two-dimensional gene-expression for symbolic regression, but also introduces one independent gene defined as a conditional statement to express a new BNF grammar of an if-then (-else) branch. In the experiments described herein, continuous/discontinuous non-branch functions and continuous/discontinuous branch functions, four testing patterns, are considered as numerical examples. Results show that GE2DG has better performance than the original GE or GEMC. Especially for the case of branch functions, GE with hybrid chromosome (GEHC), where GE2DG is incorporated with GEMC, has faster convergence in symbolic regression than other methods.

DOI： 10.1504/IJCIS.2017.083634

A self-regenerable soot sensor with a proton-conductive thin electrolyte and a nanostructured platinum sensing electrode

Lv Peiling, Ito Takenori, Oogushi Akihide, Nakashima Kensaku, Nagao Masahiro, Hibino Takashi

SCIENTIFIC REPORTS Vol. 6 page： 37463 2016.11

Kinetically driven switching and memory phenomena at the interface between a proton-conductive electrolyte and a titanium electrode

Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro

SCIENTIFIC REPORTS Vol. 6 page： 31691 2016.8

A Rechargeable Tin–Air PEM Battery Using SnSO4 as an Anode-active Material

Kobayashi Kazuyo, Nagao Masahiro, Hibino Takashi

Chemistry Letters Vol. 45 ( 2 ) page： 161 - 163 2016.2

Language：English Publishing type：Research paper (scientific journal) Publisher：The Chemical Society of Japan

SnSO4 was employed as an anode-active material for rechargeable batteries, where Sn4+ and Sn2+ ions are reduced to Sn2+ and Sn, respectively during charge while the inverse reactions occur during discharge. Undesired hydrogen production was substantially avoided by adjusting the charge voltage to 1.5 V. The resulting cell functioned as a battery with an electrical capacity of 258 mA h g−1 at 10 mA cm−2 and as a fuel cell with power densities of 55–125 mW cm−2 at 0.8 V.

DOI： 10.1246/cl.151015

Rechargeable Metal-Air Proton-Exchange Membrane Batteries for Renewable Energy Storage

Nagao Masahiro, Kobayashi Kazuyo, Yamamoto Yuta, Yamaguchi Togo, Oogushi Akihide, Hibino Takashi

CHEMELECTROCHEM Vol. 3 ( 2 ) page： 247 - 255 2016.2

Rechargeable metal-air proton -exchange membrane batteries for renewable energy storage Reviewed

Masahiro Nagao, Kazuyo Kobayashi, Yuta Yamamoto, Togo Yamaguchi, Akihide Oogushi, Takashi Hibino

ChemElectroChem Vol. 3 page： 247-255 2016

Kinetically driven switching and memory phenomena at the interface between a proton-conductive electrolyte and a titanium electrode Reviewed

Takashi Hibino, Kazuyo Kobayashi, Masahiro Nagao

Scientific Reports Vol. 6 page： 31691 2016

A self-regenerable soot sensor with a proton-conductive thin electrolyte and a nanostructured platinum sensing electrode Reviewed

Peiling Lv, Takenori Ito, Akihide Oogushi, Kensaku Nakashima, Masahiro Nagao, Takashi Hibino

Scientific Reports Vol. 6 page： 37463 2016

A Sensitive and Self-Regenerable Particulate Matter Sensor with a H3PO4-Modified BaZr0.8Y0.2O3-delta Electrolyte and an IrO2-Catalyzed Sensing Electrode

Lv Peiling, Oogushi Akihide, Nakashima Kensaku, Kobayashi Kazuyo, Nagao Masahiro, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 163 ( 14 ) page： B761 - B767 2016

Design of a Rechargeable Fuel-Cell Battery with Enhanced Performance and Cyclability

Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro, Yamamoto Yuta

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 163 ( 7 ) page： A1420 - A1428 2016

A Sensitive and Self-Regenerable Particulate Matter Sensor with a H3PO4-Modified BaZr0.8Y0.2O3-δ Electrolyte and an IrO2-Catalyzed Sensing Electrode Reviewed

長尾征洋

Journal of The Electrochemical Society Vol. 163 2016

Diversity oriented multi-objective island based genetic algorithm for flexible job shop scheduling considering setup operator regulation Reviewed

Masahiro Nagao, Takuya Sugimoto, Yasuhiko Morinaga, and Mitsuru Sano

Journal of Human Environmental Studies Vol. 12 ( 1 ) page： 1-12 2015.6

A Direct Urine Fuel Cell Operated at Intermediate Temperatures

Nagao Masahiro, Kobayashi Kazuyo, Hibino Takashi

Chemistry Letters Vol. 44 ( 3 ) page： 363 - 365 2015.3

Language：English Publishing type：Research paper (scientific journal) Publisher：The Chemical Society of Japan

Direct utilization of urine in fuel cells is a promising technology for conversion into electricity. Here, we report the design of anode materials for high-temperature direct urine fuel cells and the performance of a fuel cell with an optimized anode at 300 °C. The resultant peak power densities reached 16.7 mW cm−2 for urine and 26.5 mW cm−2 for urea.

DOI： 10.1246/cl.141067

High-temperature supercapacitor with a proton-conducting metal pyrophosphate electrolyte

Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro, Kawasaki Shinji

SCIENTIFIC REPORTS Vol. 5 page： 7903 2015.1

Diversity oriented multi-objective island based genetic algorithm for flexible job shop scheduling considering setup operator regulation

Nagao Masahiro, Sugimoto Takuya, Morinaga Yasuhiko, Sano Mitsuru

Journal of Human Environmental Studies Vol. 13 ( 1 ) page： 1 - 12 2015

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Society for Human Environmental Studies

The flexible job-shop scheduling problem has received considerable attention in the production scheduling field. Setup operators are inseparable from the system of a small-volume and widely diverse producing. The work load balance among setup operators is important to increase the satisfaction at work. In this paper, a diversity-oriented multi-objective island based genetic algorithm is proposed to solve the FJSP considering the setup operators as a constraint. The total tardiness of each product and the difference of the setup number between setup operators are regarded as objectives and optimized using the Pareto-based method. When the proposed GA is applied to a test instance with moderate size of the problem complexity, it obtained the two exact solutions within a few seconds. Results show that the proposed algorithm, which was applied to the realistic production planning of the model enterprise, improves diversity of sub-solutions and the local search performance by the introduction of the diversity-oriented evaluation of each island, and emigration strategy among islands.

DOI： 10.4189/shes.13.1

Rechargeable PEM Fuel-Cell Batteries Using Quinones as Hydrogen Carriers

Rechargeable PEM Fuel-Cell Batteries Using Porous Carbon Modified with Carbonyl Groups as Anode Materials International coauthorship

Kobayashi Kazuyo, Nagao Masahiro, Yamamoto Yuta, Heo Pilwon, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 162 ( 8 ) page： F868 - F877 2015

Nagao Masahiro, Kobayashi Kazuyo, Yamamoto Yuta, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 162 ( 4 ) page： F410 - F418 2015

Low-temperature Sintering of Yttria-stabilized Zirconia Using Bismuth–Vanadium Oxide as a Sintering Aid at 800 °C

Nagao Masahiro, Kobayashi Kazuyo, Hibino Takashi

Chemistry Letters Vol. 43 ( 12 ) page： 1887 - 1889 2014.12

Language：English Publishing type：Research paper (scientific journal) Publisher：The Chemical Society of Japan

The effect of the addition of copper-doped bismuth–vanadium oxide to yttria-stabilized zirconia (YSZ) on the sinterability and electrical conductivity, especially in reducing atmospheres, has been investigated. When Bi2Cu0.1V0.9O5.35 was used as a sintering aid, the sintering temperature could be reduced to 800 °C, whereas the conventional sintering process requires temperatures above 1300 °C. Although the conductivity of YSZ with 1.5 mol % Bi2Cu0.1V0.9O5.35 was slightly lower than that of pure YSZ sintered at 1300 °C, no PO2 dependence was observed under reducing conditions (e.g., PO2 = 10−5–10−24 atm), which indicates that the electrolyte is applicable to solid-oxide fuel cells.

DOI： 10.1246/cl.140712

Flexible job shop scheduling with weighted tardiness and setup worker load balance in make-to-order manufacturing

Solo pool-punishers defeat free-riders through individual learning in compulsory public goods games

Mitsuru Sano, Kenta Nagasawa, and Masahiro Nagao

Social for Human Environmental Studies Vol. 12 ( 2 ) page： 181-189 2014.12

Proton-conducting tin phosphates for electrochemical applications operating at intermediate temperatures Invited

Masahiro Nagao

Journal of Material Sciences & Engineering Vol. 3 ( 3 ) page： 64 2014.10

Yasuhiko Morinaga, Masahiro Nagao, Mitsuru Sano

IPSJ SIG technical reports Vol. 2014 ( 24 ) page： 1 - 7 2014.6

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Information Processing Society of Japan (IPSJ)

This paper describes the optimization of flexible job-shop scheduling problem (FJSP) in small and medium-sized companies with make-to-order (MTO) manufacturing many kinds of products. Incorporating weighted tardiness and set-up worker load balance to the objective function of the problem, we develop Genetic Algorithm (GA) using island model and a study of production data in real world make-to-order manufacturing type small business. Comparing the solutions by developed GA with the values obtained by prioritizing due date alone schedule such as EDD (Earliest due date), we confirm the effectiveness of the proposed method. In addition, we conduct numerical experiments on risk, which is general in the enterprise, and countermeasures by using this technique, and confirm that it is possible to quantitatively evaluate the effects. We suggest that the proposed method has potential to contribute to the business judgment in the make-to-order type small business with products and services by incorporating other objective functions

Flexible job shop scheduling with weighted tardiness and setup worker load balance in make-to-order manufacturing

Yasuhiko Morinaga, Masahiro Nagao, Mitsuru Sano

IPSJ SIG Notes Vol. 2014 ( 24 ) page： 1 - 7 2014.6

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Information Processing Society of Japan (IPSJ)

Optimization of flexible job-shop scheduling with weighted tardiness and setup-worker load balance in make-to-order manufacturing

Morinaga Y.

2014 Joint 7th International Conference on Soft Computing and Intelligent Systems, SCIS 2014 and 15th International Symposium on Advanced Intelligent Systems, ISIS 2014 page： 87 - 94 2014.2

Solo pool-punishers defeat free-riders through individual learning in compulsory public goods games

Sano Mitsuru, Nagasawa Kenta, Nagao Masahiro

Journal of Human Environmental Studies Vol. 12 ( 2 ) page： 181 - 189 2014

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Society for Human Environmental Studies

Human societies are organized around cooperative and altruistic interactions. Natural selection, however, favors selfish and strong individuals who maximize their own resources at the expense of others. Although many previous studies with average payoffs have developed mechanisms for resolving the cooperation dilemma, they have a severe problem. Estimating the average values requires sufficient knowledge of the payoffs for all players in all public goods games (PGGs), which is difficult to achieve in practice. People make estimates every day based on insufficient knowledge. The transition probabilities ought to be therefore calculated based on known payoffs rather than on the average. Through this individual learning, we show that pool-punishers can overcome free-riders to establish stable cooperation within a society without help from non-participants or players using other strategies, even with a small multiplier (r) of public goods. This scenario requires the punishment that the free-riders receive to be greater than the cost to the pool-punishers. We also demonstrate that smaller population sizes and higher participation rates engender greater fixation probabilities for cooperation.

DOI： 10.4189/shes.12.181

Fatigue and quality of life in citrin deficiency during adaptation and compensation stage

Okano Y., Kobayashi K., Ihara K., Ito T., Yoshino M., Watanabe Y., Kaji S., Ohura T., Nagao M., Noguchi A., Mushiake S., Hohashi N., Hashimoto-Tamaoki T.

Molecular Genetics and Metabolism Vol. 109 ( 1 ) page： 9 - 13 2013.5

Language：English Publishing type：Research paper (scientific journal) Publisher：Molecular Genetics and Metabolism

Citrin-deficient children and adolescents between adult-onset type II citrullinemia and neonatal intrahepatic cholestasis by citrin deficiency do not have clear clinical features except for unusual diet of high-fat, high-protein, and low-carbohydrate food. The aims of the present study are to characterize fatigue and quality of life (QOL) in citrin-deficient patients during adaptation and compensation stage, and to define the relationship between fatigue and QOL. The study subjects were 55 citrin-deficient patients aged 1-22. years (29 males) and 54 guardians. Fatigue was evaluated by self-reports and proxy-reports of the PedsQL Multidimensional Fatigue Scale. QOL was evaluated by the PedsQL Generic Core Scales. Both scale scores were significantly lower in child self-reports (p< 0.01 and p< 0.05, respectively) and parent proxy-reports (p< 0.01 and p< 0.01, respectively) than those of healthy children. Citrin-deficient patients with scores of 50 percentile or less of healthy children constituted 67.5% of the sample for the Fatigue Scale and 68.4% for the Generic Core Scales. The PedsQL Fatigue Scale correlated with the Generic Core Scales for both the patients (r = 0.56) and parents reports (r = 0.71). Assessments by the patients and their parents showed moderate agreement. Parents assessed the condition of children more favorably than their children. The study identified severe fatigue and impaired QOL in citrin-deficient patients during the silent period, and that such children perceive worse fatigue and poorer QOL than those estimated by their parents. The results stress the need for active involvement of parents and medical staff in the management of citrin-deficient patients during the silent period. © 2013 Elsevier Inc.

DOI： 10.1016/j.ymgme.2013.01.020

An all-solid-state rechargeable aluminum-air battery with a hydroxide ion-conducting Sb(V)-doped SnP2O7 electrolyte

Takashi Hibino, Kazuyo Kobayashi, Masahiro Nagao

Journal of Materials Chemistry a Vol. 1 ( 47 ) page： 14844 - 14848 2013

QOL指標と維持費用に基づく撤退・集結市街地の遺伝的アルゴリズムを用いた選定方法 Reviewed

長尾征洋、青野隆仁、戸川卓哉、加藤博和、佐野充

土木計画学研究・論文集 Vol. 29 page： I_339-I_348 2012.12

Alternating-Current Electrolysis for the Production of Phenol from Benzene

Lee Byungik, Naito Hiroto, Nagao Masahiro, Hibino Takashi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 51 ( 28 ) page： 6961 - 6965 2012

Hydroxide Ion Conducting Antimony(V)-Doped Tin Pyrophosphate Electrolyte for Intermediate-Temperature Alkaline Fuel Cells

Hibino Takashi, Shen Yanbai, Nishida Masakazu, Nagao Masahiro

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 51 ( 43 ) page： 10786 - 10790 2012

AN APPLICATION OF GENETIC ALGORITHM TO SELECT RETREAT AND COHESION AREAS

NAGAO Masahiro, AONO Takahito, TOGAWA Takuya, KATO Hirokazu, SANO Mitsuru

Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) Vol. 68 ( 5 ) page： I_339 - I_348 2012

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers

Compact city is a promising urban form from a sustainability viewpoint, especially in developed countries. For urban planners, however, it is difficult to determine which areas should be expected to retreat and which should be concentrated. This paper discusses the morphology of an urban area after a retreat and concentration policy is implemented. The authors design and implement a genetic algorithm to determine areas that should retreat and those where concentration should occur to secure sustainability of a real local city. Changes in various indices related with Quality Of Life (QOL) and the urban forms that emerge are discussed. To evaluate this optimization technique, we focus on reducing maintenance expenses and improving the QOL within city government budget constraints. It is found that, in least maintenance cost option, people living in old houses/buildings or low land price areas may leave those districts and re-concentrate into areas where transport is convenient such as around train stations and national routes. In QOL maximization option, people living in the suburbs where transport is relatively inconvenient may move to more accessible areas. In medium option between least maintenance cost and most QOL, suburbs where land prices are low and where houses are old are the prior areas to retreat, followed by suburbs where transport is inconvenient. It is concluded that proposed optimization method, using a genetic algorithm for the evaluation of retreat and re-concentrate policies, is efficient and reliable.

DOI： 10.2208/jscejipm.68.i_339

Compact bipolar plate-free direct methanol fuel cell stacks

Optimizing the Energy Management for a Medical Facility by Genetic Algorithm

NAGAO Masahiro, TAKEUCHI Yusuke, SANO Mitsuru

Vol. 32 ( 5 ) page： 318 2011.9

An Application of Genetic Algorithm to Retreat and Re-concentration Area Selection - A Case Study for Joetsu City, Niigata Prefecture - Reviewed

Takahito AONO, Masahiro NAGAO, Takuya TOGAWA, Hirokazu KATO and Mitsuru SANO

Vol. 43 page： 284 2011.5

Xue Dong, Motohiro Takahashi, Masahiro Nagao and Takashi Hibino

Chemical Communications Vol. 47 ( 18 ) page： 5292 - 5294 2011

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

Fuel cells with a PtAu/C anode and a Pr-doped Mn2O3/C cathode were stacked without using a bipolar plate, and their discharge properties were investigated in a methanol aqueous solution bubbled with air. A three-cell stack exhibited a stack voltage of 2330 mV and a power output of 21 mW.

DOI： 10.1039/c1cc10493d

Optimizing the Energy Management for a Medical Facility by Genetic Algorithm

PubMed

Nagao Masahiro, Takeuchi Yusuke, Sano Mitsuru

Journal of Japan Society of Energy and Resources Vol. 32 ( 5 ) page： 24 - 32 2011

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Energy and Resources

The present study evaluated the optimized operation management of a cold air power system at a large-scale medical facility
during the summer, when the air-conditioning cold load reaches the annual maximum. The evaluation was conducted with
respect to energy costs, CO2 emissions and robustness of the energy-supply system. Since there are a large number of
possible solutions as to which machines and which refrigeration levels should be operated, a genetic algorithm (GA) was
used to obtain approximate, applicable solutions stochastically, to determine a daily plan of operation for the refrigeration
system in a timely manner. According to the operation management plan obtained from the GA, over 10% of the energy costs
and the CO2 emissions can be reduced by improved operation. The stability of the cold air power system when a large-sized
photovoltaic system is installed or when one of the refrigeration units breaks down can also be evaluated by using the GA. In
a medical faculty we taken up, the estimated reduction in CO2 by adopting the photovoltaic system was calculated to be about
16% compared to the current operation management plan. And also the stability of present energy-supply system was
validated except for when the vapor-absorption-type refrigerator was down.

DOI： 10.24778/jjser.32.5_24

Separator-free fuel cell stacks operating in a mixture of hydrogen and air

Nagao, M; Takahashi, M; Hibino, T

ENERGY & ENVIRONMENTAL SCIENCE Vol. 3 ( 12 ) page： 1934 - 1940 2010.12

Language：English Publishing type：Research paper (scientific journal) Publisher：Energy and Environmental Science

Fuel cells for vehicular and residential applications have encountered a key technical challenge in cost reduction. This challenge can be avoided by operating a fuel cell stack without the use of gas separators, which are expensive and voluminous and therefore comprise a significant portion of the cost of a fuel cell stack. Single-chamber fuel cells (SCFCs) have the potential of realizing such operation, because there is no need for separation between fuel and air. In this paper, we present a selective anode (PtAu/C) and cathode (Pr-doped Mn2O3/C) for respective electrochemical hydrogen oxidation and oxygen reduction reactions in a SCFC. A single cell with these electrodes operated at 50 °C generated an open-circuit voltage of 1204 mV and a peak power density of 50 mW cm-2 in a feed mixture of 80% hydrogen and 20% air at a flow rate of 30 mL min-1. The high selectivity of these electrodes also enabled the design of two different separator-free fuel cell stacks, parallel and perpendicular to the gas stream. Both cell stacks exhibited increasing stack voltage and power output almost proportionally to the increase in the number of single cells. These results demonstrate that the separator-free fuel cell stack shows high potential for a significant reduction of the cost of fuel cell systems. © The Royal Society of Chemistry.

DOI： 10.1039/c0ee00288g

Electrochemical Property of Mg-doped LiMnPO4/C for Li-ion Battery

MFCAの経年解析の課題と月次簡易MFCAの提案

佐野充，長尾征洋，杉本拓弥，江端祐也

第15回商品開発・管理学会創立10周年記念全国大会講演・論文集 page： 130-135 2010.11

Masahiro Nagao, Hiroki Ohmae, Miho Fujita, and Mitsuru Sano

Meeting Abstract-Electrochemical Society Vol. 901 page： 164 2009.5

*システムダイナミクスによる名古屋市下水道モデルの構築と環境改善対策シミュレーション

長尾征洋、渡会育也、佐野充、栗本英和

システムダイナミックス学会日本支部予稿集 page： 17-20 2009.5

A Single-Chamber SOFC Stack: Energy Recovery from Engine Exhaust

Nagao M., Yano M., Okamoto K., Tomita A., Uchiyama Y., Uchiyama N., Hibino T.

FUEL CELLS Vol. 8 ( 5 ) page： 322 - 329 2008.10

De-NOx reactor and NOx sensor using In3+-doped SnP2O7 with PtRhBa/C electrode

Nagao Masahiro, Yoshii Takeshi, Namekata Yousuke, Teranishi Shinya, Sano Mitsuru, Tomita Atsuko, Hibino Takashi

SOLID STATE IONICS Vol. 179 ( 27-32 ) page： 1655 - 1661 2008.9

Pt-free intermediate-temperature fuel cells

Heo Pilwon, Shibata Hidetaka, Nagao Masahiro, Hibino Takashi

SOLID STATE IONICS Vol. 179 ( 27-32 ) page： 1446 - 1449 2008.9

Direct dimethyl ether fuel cells at intermediate temperatures

Heo Pilwon, Nagao Masahiro, Sano Mitsuru, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 155 ( 1 ) page： B92 - B95 2008

Proton conduction in Sn(0.95)Al(0.05)P(2)O(7)-PBI-PTFE composite membrane

Heo Pilwon, Kajiyama Norikazu, Kobayashi Kazuyo, Nagao Masahiro, Sano Mitsuru, Hibino Takashi

ELECTROCHEMICAL AND SOLID STATE LETTERS Vol. 11 ( 6 ) page： B91 - B95 2008

De-NOx reactor and NOx sensor using In^<3+>-doped SnP_2O_7 with PtRhBa/C electrode Reviewed

長尾征洋

Solid State Ionics 179 page： 1655 - 1661 2008

Pt-free intermediate-temperature fuel cells Reviewed

長尾征洋

Solid State Ionics 97 page： 1446 - 1449 2008

Proton conductor in Sn_ <0.95>Al_ <0.05>P_2O_7-PBI-PTFE composite membrane Reviewed

長尾征洋

Electrochemical and Solid-State Letters 11 2008

Direct Dimethyl Ether Fuel Cells at Intermediate Temperatures Reviewed

長尾征洋

Journal of The Electrochemical Society 155 2008

A single-chamber SOFC stack operating in engine exhaust

Yano, M; Nagaoa, M; Okamoto, K; Inoa, AT; Uchiyarna, Y; Uchiyama, N; Hibino, T

ELECTROCHEMICAL AND SOLID STATE LETTERS Vol. 11 ( 3 ) page： B29 - B33 2008

Language：English Publishing type：Research paper (scientific journal) Publisher：Electrochemical and Solid-State Letters

Heat engines emit huge amounts of exhaust which contain considerable quantities of heat and chemical energies. An increasing public awareness of global warming and oil depletion has required the development of innovative methods of recovering energy from such exhaust. A promising approach is to produce electricity from unburned fuel by using a fuel cell system. The exhaust includes cracked-light hydrocarbons, offering the possibility of applying this system to a power generator. Solid oxide fuel cells (SOFCs) can work at elevated temperatures but have poor thermal and mechanical shock resistance. In this study, we address this problem by operating the fuel cell system in a single-chamber mode, wherein no separation between fuel and oxidant gases is required. This operation provides high tolerance toward thermal cycling and breakage of the electrolyte. As a result, a twelve-cell stack exhibits stable and high performance in the exhaust from a motorcycle. © 2007 The Electrochemical Society.

DOI： 10.1149/1.2824502

Selective catalytic reduction of NOx by H-2 using proton conductors as catalyst supports

*A Single-Chamber SOFC Stack Operating in Engine Exhaust Reviewed

Masaya Yano, Masahiro Nagao, Kohsuke Okamoto, Atsuko Tomita, Yasuyuki Uchiyama, Naoki Uchiyama, and Takashi Hibino

Electrochemical and Solid-State Letters Vol. 11 ( 3 ) page： B29-B33 2007.12

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

Tomita Atsuko, Yoshii Takeshi, Teranishi Shinya, Nagao Masahiro, Hibino Takashi

JOURNAL OF CATALYSIS Vol. 247 ( 2 ) page： 137 - 144 2007.4

Proton Conduction in In3+-doped SnP2O7 with Various P/(Sn+In) Ratios Reviewed

Masahiro Nagao, Toshio Kamiya, Pilwon Heo, Takashi Hibino, Mitsuru Sano, Atsuko Tomita

ECS Transaction Vol. 2 ( 10 ) page： 43 2007

Language：English

A proton conducting, 10 mol% In3+-doped SnP2O7 was characterized by TGA, TEM measurement, and electrochemical techniques. We prepared Sn0.9In0.1P2{plus minus}xO7{plus minus}x samples with various P/(Sn+In) molar ratios from 1.7 to 2.6. Sn0.9In0.1P2O7 with a stoichiometric P/(Sn+In) molar ratio of 2.0 showed a proton conductivity of about 0.19 S cm-1 at 250oC under unhumidified conditions. When the P/(Sn+In) molar ratios were over 2.0, amorphous layer composed of phosphorus compounds were observed over the surface of Sn0.9In0.1P2O7 particles. The proton conductivity slightly increased with increasing the P/(Sn+In) molar ratios from 2.0 to 2.6. It is considered that the amorphous layer enhanced the proton conductivity by surface conduction. On the other hand, the thermal stability of this amorphous layer during heating-cooling cycle was not enough high to apply to electrochemical devises. It is important to prepare Sn0.9In0.1P2O7 with the P/(Sn+In) molar ratio of 2.0 to achieve both sufficient proton conductivity and high thermal stability.

A high-performance Mo2C-ZrO2 anode catalyst for intermediate-temperature fuel cells

Heo, P; Nagao, M; Sano, M; Hibino, T

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 154 ( 1 ) page： B53 - B56 2007

Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of the Electrochemical Society

Anode performance of non-Pt catalysts for hydrogen oxidation was investigated in intermediate-temperature proton exchange membrane fuel cells. Molybdenum carbide (Mo2 C) showed the highest catalytic activity among the transition metal carbides tested. Furthermore, the catalytic activity of Mo2 C was significantly improved by the addition of ZrO2 to the anode. Transmission electron microscopy and X-ray diffraction measurements revealed that Mo2 C was more highly dispersed in the Mo2 C- ZrO2 C than in the Mo2 CC, suggesting that the particle growth of Mo2 C was suppressed by the addition of ZrO2. We also tested the performance of a fuel cell using Mo2 C- ZrO2 C and Sn0.9 In0.1 P2 O7 as the anode and electrolyte materials, respectively, between 150 and 300°C. At 250°C or higher, the Mo2 C- ZrO2 C anode showed a cell performance comparable to that of the PtC anode. However, cell performance was strongly dependent on the operating temperature, reflecting that the catalytic activity of Mo2 C- ZrO2 was greatly lowered by the decrease in operating temperature. Thus it was concluded that the Mo2 C- ZrO2 catalyst is a promising alternative anode material to Pt, especially at intermediate temperatures. © 2006 The Electrochemical Society.

DOI： 10.1149/1.2382268

Sn0.9In0.1P2O7-based organic/inorganic composite membranes application to intermediate-temperature fuel cells

Heo Pilwon, Nagao Masahiro, Kamiya Toshio, Sano Mitsuru, Tomita Atsuko, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 154 ( 1 ) page： B63 - B67 2007

Single-chamber SOFCs using dimethyl ether and ethanol

Yano Masaya, Kawai Takanori, Okamoto Kohsuke, Nagao Masahiro, Sano Mitsuru, Tomita Atsuko, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 154 ( 8 ) page： B865 - B870 2007

Room-temperature hydrogen sensors based on an In3+-doped SnP2O7 proton conductor

Tomita Atsuko, Namekata Yousuke, Nagao Masahiro, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 154 ( 5 ) page： J172 - J176 2007

Intermediate-temperature proton conduction in Al3+-doped SnP2O7

Tomita Atsuko, Kajiyama Norikazu, Kamiya Toshio, Nagao Masahiro, Hibino Takashi

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 154 ( 12 ) page： B1265 - B1269 2007

A high-performance Mo_2C-ZrO_2 anode catalyst for intermediate-temperature fuel cells Reviewed

長尾征洋

Journal of The Electrochemical Society 154 2007

Sn_ <0.9>In_ <0.1>P_2O_7-based organic/inorganic composite membranes application to intermediate-temperature fuel cells Reviewed

長尾征洋

Journal of The Electrochemical Society 154 2007

A proton-conducting In3+-doped SnP2O7 electrolyte for intermediate-temperature fuel cells

Nagao M, Takeuchi A, Heo P, Hibino T, Sano M, Tomitab A

ELECTROCHEMICAL AND SOLID STATE LETTERS Vol. 9 ( 3 ) page： A105 - A109 2006

Proton conduction in In3+-doped SnP<inf>2</inf>O<inf>7</inf> with various P/(Sn+In) ratios

Nagao M., Heo P., Kamiya T., Hibino T., Sano M., Tomita A.

ECS Transactions Vol. 2 ( 10 ) page： 43 - 49 2006

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：ECS Transactions

A proton conducting, 10 mol% In3+-doped SnP2O 7 (Sn0.9In0.1 P2O7) was characterized by thermogravimetric analysis (TGA), transmission electron microscope (TEM) measurement, and electrochemical techniques. We prepared Sn0.9In0.1P2=x07±x samples with various P/(Sn+In) molar ratios from 1.7 to 2.6 through the control of the amount of phosphoric acid at the preparation process in order to examine electrochemical properties and thermal stabilities. Sn0.9In 0.1P2O7 with a stoichiometric P/(Sn+In) molar ratio of 2.0 showed a proton conductivity of about 0.19 S cm-1 at 250°C under unhumidified conditions. When the P/(Sn+In) molar ratios were over 2.0, the formation of amorphous layer composed of phosphorus compounds were observed over the surface of Sn0.9In0.1P 2O7 particles. The proton conductivity slightly increased with increasing the P/(Sn+In) molar ratios from 2.0 to 2.6. It is considered that the amorphous layer enhanced the proton conductivity by surface conduction. On the other hand, the thermal stability of this amorphous layer during heating-cooling cycle was not enough high to apply to electrochemical devises. As a result, it is important to prepare Sn0.9In0.1P 2O7 with the P/(Sn+In) molar ratio of 2.0 to achieve both sufficient proton conductivity and high thermal stability. Copyright The Electrochemical Society.

DOI： 10.1149/1.2408942

Proton conduction in In3+-doped SnP2O7 at intermediate temperatures

Nagao Masahiro, Kamiya Toshio, Heo Pilwon, Tomita Atsuko, Hibino Takashi, Sano Mitsuru

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 153 ( 8 ) page： A1604 - A1609 2006

Performance of an intermediate-temperature fuel cell using a proton-conducting Sn0.9In0.1P2O7 electrolyte

Heo P, Shibata H, Nagao M, Hibino T, Sano M

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 153 ( 5 ) page： A897 - A901 2006

Intermediate-temperature NOx sensor based on an In3+-doped SnP2O7 proton conductor

Nagao M, Namekata Y, Hibino T, Sano M, Tomita A

ELECTROCHEMICAL AND SOLID STATE LETTERS Vol. 9 ( 6 ) page： H48 - H51 2006

Electrochemical reduction of NOx at intermediate temperatures using a proton-conducting In3+-doped SnP2O7 electrolyte

Nagao M, Yoshii T, Hibino T, Sano M, Tomita A

ELECTROCHEMICAL AND SOLID STATE LETTERS Vol. 9 ( 2 ) page： J1 - J4 2006

Comparative performance of anode-supported SOFCs using a thin Ce0.9Gd0.1O1.95 electrolyte with an incorporated BaCe0.8Y0.2O3-alpha layer in hydrogen and methane

Tomita A, Teranishi S, Nagao M, Hibino T, Sano M

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 153 ( 6 ) page： A956 - A960 2006

A high performance Pt-free anode for intermediate-temperature fuel cells

Heo P., Nagao M., Sano M., Hibino T.

ECS Transactions Vol. 3 ( 1 ) page： 453 - 458 2006

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：ECS Transactions

Proton exchange membrane fuel cells (PEMFCs) are among the most promising power sources for vehicular and residential applications because of their clean and efficient energy conversion. However, these fuel cells require expensive Pt-based electrodes, which raise the cost of fuel-cell systems considerably. Here, we propose an approach to solving this problem by combining a molybdenum carbide (Mo2C) catalyst with an In3+-doped SnP 2O7 electrolyte. The resulting fuel cell can operate in the temperature range of 150 to 300°C, providing the high catalytic activity of Mo2C for electrochemical hydrogen oxidation, which is comparable to that of a Pt anode catalyst. Another important advantage of this fuel cell is that the Mo2C anode catalyst showed perfect tolerance to 10%CO. copyright The Electrochemical Society.

DOI： 10.1149/1.2356166