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EDF 기대손실에 기초한 공정능력지수의 붓스트랩 신뢰구간
임태진 ( Im Tae Jin ),송현석 ( Song Hyeon Seog ) 한국품질경영학회 2003 품질경영학회지 Vol.31 No.4
This paper investigates bootstrap confidence intervals of the process capability index(PCI1 based on the expected loss derived from the empirical distribution function(EDF1. The PCI based on the expected loss is too complex to derive its confidence interval analytically, so the bootstrap method is a good alternative. We propose three types of the bootstrap confidence interval; the standard bootstrap(SB1, the percentile bootstrap(PB1, and the acceleration biased-corrected percentile bootstrap(ABC1. We also perform a comprehensive simulation study under various process distributions, in order to compare the accuracy of the coverage probability of the bootstrap confidence intervals. In most cases, the coverage probabilities of the bootstrap confidence intervals from the EDF PCI turned out to be more accurate than those from the PCI based on the normal distribution. It is expected that the bootstrap confidence intervals from the EDF PCI can be utilized in real processes where the true distribution family may not be known.
초임계 유체 추출법을 이용한 용담사간탕(龍膽瀉肝湯) 약침액(藥鍼液)의 정유(精油)성분에 대한 연구(硏究)
이재은,김병우,임태진,김동희,권기록,Lee, Jae-Eun,Kim, Byeong-U,Im, Tae-Jin,Kim, Dong-Hui,Shin, Min-Seop,Yook, Tae-Han,Gwon, Gi-Rok 대한약침학회 2008 Journal of pharmacopuncture Vol.11 No.1
Objectives : This study was performed to analyze the effective components of essential oil obtained from Yongdamsagantang, which has been efficacious against leukorrhea in gynecologic diseases. Methods : I obtained the essential oils of Yongdamsagan-tang by hydrodistillation extraction method and supercritical fluid extraction(SFE) method, and then I analyzed those by GC/MS(Gas Chromatography/Mass Spectrum). Results : 1. The optimum SFE(Supercritical Fluid Extraction) condition was obtained in the following experiment conditions: pressure 200atm, temperature $45^{\circ}C$, duration of extraction 25minutes. 2. With GC(Gas Chromatography) and GC/MS(Gas Chromato- graphy/Mass Spectrum) analysis, I identified 37 compounds in the Yongdamsagan-tang's essential oil obtained through the SFE method. The main compounds were as follows : 3-Methyl-but-2-enoic acid,2,2-dimethyl-8-oxo-3,4-dihydro-2H,8H -pyrano[3,2-g]chromen-3-yl ester(49.81%), (Z)-6-Pentadecen-1 -ol(3.19%), (-)-Spathulenol(2.40%). 3. I identified 4 compounds in the Yongdamsagan-tang's essential oil obtained through the hydrodistillation method. The main compounds were as follows : 3-Methyl-but-2-enoic acid, 2,2-dimethyl-8-oxo-3,4-dihydro-2H,8H-pyrano [3,2-g]chromen-3-yl ester(2.61%). 4. 3-Methy I-but-2-enoic acid, 2,2-dimethyl-8-oxo-3,4-dihydro-2H,8H-pyrano[3,2-g] chromen-3-yl ester, all were identified in both the SFE method and the hydrodistillation method, but the others were not identified in common. 5. I also conducted an additional test in order to examine the essential oil's antimicrobial action against bacteria. Both MIC(Minimum Inhibitory Concentrations) and MBC(Minimum Bactericidal Concentrations) were $0.125mg/m{\ell}$ against N. meningitidis, however MIC and MBC were $1.0mg/m{\ell}$ in antimicrobial action against 12 different genera of bacteria.
장재휘 ( Jang Jae Hwi ),강구정 ( Kang Gu Jeong ),김용훈 ( Kim Yong Hun ),임태진 ( Im Tae Jin ),강유나 ( Kang Yu Na ) 대한소화기학회 2003 대한소화기학회 추계학술대회 Vol.2003 No.-
<목적> 간섬유화과정에는 성상세포가 중요한 기능을 하는 것으로 알려져 있으며 성상세포를 포함한 간내 다른 세포에서 분비되는 TGF-β1이 간 섬유화 시작에 중요한 신호전달물질로 알려져 있다. 간 섬유화실험모델에서 가장 중요한 역할을 하는 것으로 알려진 성상세포가 섬유화과정에서 단계별로 활성화정도와 TGF-β1 발현관계를 일차적으로 알아보고자 했다. 아연(Zn)은 유리산소기(oxygen free radical) 포착제인 metallothionein (MT