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Park Gowooni,김형섭,배균섭 대한임상약리학회 2020 Translational and Clinical Pharmacology Vol.28 No.4
SAS® is commonly used for bioequivalence (BE) data analysis. R is a free and open software for general purpose data analysis, and is less frequently used than SAS® for BE data analysis. This tutorial explains how R can be used for BE data analysis to generate comparable results with SAS®. The main SAS® procedures for BE data analysis are PROC GLM and PROC MIXED, and the corresponding R main packages are “sasLM” and “nlme” respectively. For fixed effects only or balanced data, the SAS® PROC GLM and R “sasLM” provide good estimates; however, for a mixed-effects model with unbalanced data, the SAS® PROC MIXED and R “nlme” are better for providing estimates without bias. The SAS® and R scripts are provided for convenience.
Flavonoids and Aromatic Compounds from the Rhizomes of Zingiber zerumbet
Jang Dae Sik,Han Ah-Reum,Park Gowooni,Jhon Gil-Ja,Seon Eun-Kyoung The Pharmaceutical Society of Korea 2004 Archives of Pharmacal Research Vol.27 No.4
Repeated column chromatography of the CHCI_3-soluble fraction of Zingiber zerumbet led to the isolation and identification of two aromatic compounds, p-hydroxybenzaldehyde (1) and vanillin (2), and six kaempferol derivatives, kaempferol-3,4',7-O-trimethylether (3), kaempferol-3-O-methylether (4), kaempferol-3,4'-O-dimethylether (5), 4'-O-acetylafzel in (6), kaempferol-3-O-(4-O-acetyl-$\alpha$-L-rhamnopyranoside)], 2',4'-O-diacetylafzelin (7), kaempferol-3-O-(2,4-O-diacetyl-$\alpha$-L-rhamnopyranoside)], and 3',4'-O-diacetylafzelin (8), kaempferol-3-O-(3,4-O-diacetyl-$\alpha$-L-rhamnopyranoside)]. The structures of 1-8 were identifed by analysis of spectroscopic data as well as by comparison with published values. This is the first report on the isolation of compounds 1-3 from this plant.