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양승옥,Sun-Hee Hyun,So-Hyun Kim,Hee-su Kim,이재휘,Wan Kyun Whang,이민원,Hyung-Kyoon Choi 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
To classify Glycyrrhiza species, samples of different species were analyzed by 1H NMR-based metabolomics technique. Partial least squares discriminant analysis (PLS-DA) was used as the multivariate statistical analysis of the 1H NMR data sets. There was a clear separation between various Glycyrrhiza species in the PLS-DA derived score plots. The PLS-DA model was validated, and the key metabolites contributing to the separation in the score plots of various Glycyrrhiza species were lactic acid, alanine, arginine, proline, malic acid, asparagine, choline, glycine, glucose, sucrose, 4-hydroxyphenylacetic acid, and formic acid. The compounds present at relatively high levels were glucose, and 4-hydroxyphenylacetic acid in G. glabra; lactic acid, alanine, and proline in G. inflata; and arginine, malic acid, and sucrose in G. uralensis. This is the first study to perform the global metabolomic profiling and differentiation of Glycyrrhiza species using 1H NMR and multivariate statistical analysis.
양승옥 한국의학도서관협의회 1992 한국의학도서관협의회지 Vol.19 No.1
The purpose of this study is to inspire to need and provide a basic data for the establishment of medical information network in Korea. Therefore, the writter searches for the theory of medical information network and takes example by the present condition in the united states. As a result, medical information network copes with the various information need of many users as a combined and effective information delivery means. Furthermore, it is believed to be carried out plural role in medical library. Finally, the writter urges to establish medical information network in order to implement devoted role of the medical library in Korea and its development.
양승옥,신권,조태신,윤경한,김영철 ( Seung Ok Yang,Kwone Shin,Tae Shin Cho,Kyong Han Yun,Young Chol Kim ) 충북대학교 산업과학기술연구소 1994 산업과학기술연구 논문집 Vol.8 No.2
Abstract_Roman We present a design of high precision controller for the plastic extruder, in which the product is required to maintain the constant weight per meter. Since such a system is continuous process, it is very difficult to measure the output va