Faculty Profiles - TSUCHIKAWA, Satoru

Papers - TSUCHIKAWA, Satoru

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Discriminant Analysis of Wood Based Materials with Weathering Damage by Near Infrared Spectroscopy Reviewed

"Tsuchikawa, S.; Yamato, K."

Journal of Near Infrared Spectroscopy Vol. 11 page： 391-399 2003.1

Application of time-of-flight near-infrared spectroscopy for detection of sugar content and acid degrees in Satsuma Mandarin Reviewed

"Tsuchikawa, S.; Sakai, E.; Inoue, K.; Miyamoto, K."

Journal of American Society of Horticultural Science Vol. 128 page： 391-396 2003.1

Near-Infrared Spectroscopic Comparison of Antique and Modern Wood Reviewed

Yonenobu, H, Tsuchikawa, S

Applied Spectroscopy Vol. 57 ( 11 ) page： 1451-1453 2003.1

Application of time-of-flight near-infrared spectroscopy for detection of sugar content and acid degrees in Satsuma Mandarin Reviewed

Tsuchikawa, S, Sakai, E, Inoue, K, Miyamoto, K

Journal of American Society of Horticultural Science Vol. 128 page： 391-396 2003.1

Application of Near Infrared Spectroscopy to Light-Irradiated Wood Reviewed

Mitsui, K, Tsuchikawa, S

Holz als Roh- und Werkstoff Vol. 61 page： 159-160 2003.1

Application of time-of-flight near infrared spectroscopy for detecting sugar content and acidity in apples Invited Reviewed

Tsuchikawa, S, Hamada, T

NIR news Vol. 14 page： 6-8 2003.1

Near-infrared Spectroscopic monitoring of the diffusion process of deuterium-labeled molecules in wood. Part II: Hardwood Reviewed

Tsuchikawa, S., Siesler, H.

Applied Spectroscopy Vol. 57 ( 6 ) page： 675-681 - 681 2003.1

Spectroscopic Monitoring of Biomass Modification by Light-Irradiation with Heat Treatment Reviewed

"Tsuchikawa, S.; Murata, A.; Kohara, M.; Mitsui K."

Journal of Near Infrared Spectroscopy Vol. 11 page： 401-405 2003

Evaluation of Elastic Modulus of Wood Surface Using Small Specimen

KOHARA Mitsuhiro, MITSUI Katsuya, MURATA Akihiro, TSUCHIKAWA Satoru

Science report of the Faculty of Education, Gifu University. Natural science Vol. 28 ( 1 ) page： 61 - 63 2003

Copying Photographic Images on Wood Surface by Light-Irradiation and Heat Treatment

KOHARA Mitsuhiro, MITSUI Katsuya, MURATA Akihiro, TSUCHIKAWA Satoru

Science report of the Faculty of Education, Gifu University. Natural science Vol. 28 ( 1 ) page： 57 - 60 2003

Discriminant analysis of wood-based materials using near-infrared spectroscopy

Tsuchikawa S, Yamato K, Inoue K

JOURNAL OF WOOD SCIENCE Vol. 49 ( 3 ) page： 275 - 280 2003

Discriminant analysis of wood-based materials with weathering damage by near infrared spectroscopy

Tsuchikawa S, Yamato K

JOURNAL OF NEAR INFRARED SPECTROSCOPY Vol. 11 ( 5 ) page： 391 - 399 2003

Non-destructive near infrared spectroscopic measurement of antique washi calligraphic scrolls

Yonenobu H, Tsuchikawa S, Oda H

JOURNAL OF NEAR INFRARED SPECTROSCOPY Vol. 11 ( 5 ) page： 407 - 411 2003

近赤外分光法による木質系廃棄物の判別分析

土川覚, 山登香織

木材保存 Vol. 29 ( 6 ) page： 259 - 262 2003

Discriminant analysis of wood-based materials with weathering damage by near infrared spectroscopy Reviewed

S Tsuchikawa, K Yamato

JOURNAL OF NEAR INFRARED SPECTROSCOPY Vol. 11 ( 5 ) page： 391 - 399 2003

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：N I R PUBLICATIONS

This research was aimed at finding a suitable discriminate technique for wood-based materials which had suffered from weathering damage, as an analogue of waste wood condition, by means of near infrared (NIR) spectroscopy and several kinds of chemometrics. The feasibility of Mahalanobis generalised distance, K nearest neighbours (KNN) or soft independent modelling of class analogy (SIMCA) as the classification method of wooden materials was examined in detail. The differences in the accuracy of classification with the spectrophotometer (for example, laboratory use and field use), pre-treatment of NIR spectra or the wavelength range as the explanatory variables were also taken into account. Five categories of wood-based materials (solid wood, laminated wood, particle or fibreboard, impregnated wood and overlaid wood) were exposed to outdoor sunlight for up to six months. It was difficult to apply Mahalanobis generalised distance to the classification of five material types where the NIR spectra varied greatly with the sample categories. Both of KNN and SIMCA presented the highest correct classification of over 93%, independent of the spectrophotometer. These results support the applicability of NIR spectroscopy to the classification of waste wood at the actual factory and job site.

Web of Science

Discriminant analysis of wood-based materials using near-infrared spectroscopy Reviewed

S Tsuchikawa, K Yamato, K Inoue

JOURNAL OF WOOD SCIENCE Vol. 49 ( 3 ) page： 275 - 280 2003

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER-VERLAG TOKYO

This study deals with the suitable discriminant techniques of wood-based materials by means of near-infrared spectroscopy (NIRS) and several chemometric analyses. The concept of Mahalanobis' generalized distance. K nearest neighbors (KNN), and soft independent modeling of class analogy (SIMCA) were evaluated to determine the best analytical procedure. The difference in the accuracy of classification with the spectrophotometer. the wavelength range as the explanatory variables, and the light-exposure condition of the sample were examined in detail. It was difficult to apply Mahalanobis' generalized distances to the classification of wood-based materials where NIR spectra varied widely within the sample category. The performance of KNN in the NIR region (800-2500nm). for which the device used in the laboratory was employed, exhibited a high rate of correct answers of validation (>98%) independent of the light-exposure conditions of the sample. When employing the device used in the field. both KNN and SIMCA revealed correct answers of validation (>88%) at wavelengths of 550-1010nm. These results suggest the applicability of NIRS to a reasonable classification of used wood at the factory and at job sites.

Web of Science

Application of near-infrared spectroscopy to wood discrimination Reviewed

S Tsuchikawa, K Inoue, J Noma, K Hayashi

JOURNAL OF WOOD SCIENCE Vol. 49 ( 1 ) page： 29 - 35 2003

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER-VERLAG TOKYO

This study deals with a new nondestructive discriminant analysis by which wood can be classified on the basis of a combination of near-infrared (NIR) spectroscopy and Mahaianobis' generalized distance. Its accuracy and reasonability were examined for wood samples with various moisture contents ranging from oven-dried to a fully saturated free water state. In a discriminant analysis employing second derivative spectra, each wood group was well distinguished. Mahalanobis' generalized distances between softwoods are relatively independent of analytical pattern, whereas the distances between hardwoods are large for easy classification. There may be two reasons for selecting a wavelength: (1) when the chemical component of wood substance relates to the discriminant analysis; and (2) when the difference in moisture content with wood species relates to them. When we correctly construct the database of NIR spectra, confirming the purpose of the analysis, suitable wood discrimination should be possible.

Web of Science

Copying Photographic Images on Wood Surface by Light-Irradiation and Heat Treatment Reviewed

KOHARA Mitsuhiro, MITSUI Katsuya, MURATA Akihiro, TSUCHIKAWA Satoru

Science report of the Faculty of Education, Gifu University. Natural science Vol. 28 ( 1 ) page： 57 - 60 2003

Evaluation of Elastic Modulus of Wood Surface Using Small Specimen Reviewed

KOHARA Mitsuhiro, MITSUI Katsuya, MURATA Akihiro, TSUCHIKAWA Satoru

Science report of the Faculty of Education, Gifu University. Natural science Vol. 28 ( 1 ) page： 61 - 63 2003

Application of near-infrared spectroscopy to wood discrimination Reviewed

Tsuchikawa S, Inoue K, Noma J, Hayashi K

JOURNAL OF WOOD SCIENCE Vol. 49 ( 1 ) page： 29 - 35 2003

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