• 제목/요약/키워드: Cho Young - Pil

검색결과 332건 처리시간 0.035초

Validation of Analysis Methods of Decursin and Decursin angelate from Angelicae gigantis Radix by Reversed-phase Liquid Chromatography

  • Ze, Keum-Ryon;Park, Sang-Young;Cho, Chang-Hee;Sung, Rak-Sun;Lee, Jong-Pil;Park, Ju-Young;Cho, So-Yean;Jin, Zhexiong;Kim, Jun-Hyuk
    • 대한약학회:학술대회논문집
    • /
    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
    • /
    • pp.288.1-288.1
    • /
    • 2003

  • The determination method of decursin and decursin angelate from Angelicae gigantis Radix, an important crude drug in oriental medicine, was developed and validated by a reverse-phase liquid chromatography. The decursin and decursin angelate, the structural isomer aspyranocoumarin each other, are the main organic constituents in Angelicae gigantis Radix. (omitted)

  • PDF

Development of a Precise Orbit Determination System for GPS

  • Park Eun-Seo;Jung Sung-Wook;Park Sang-Young;Choi Kyu-Hong;Lee Woo-Kyoung;Cho Sungki;Park Jong-Uk;Park Pil-Ho
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
    • /
    • 한국우주과학회 2005년도 한국우주과학회보 제14권2호
    • /
    • pp.60-60
    • /
    • 2005

  • PDF

탄성 댐퍼가 추가된 대형철골 구조물의 응답특성 (Response Characteristics Of Steel Frame Structures With Added Elastic Dampers)

  • Bae, Chun-Hee;Cho, Cheul-Whan;Yang, Kyeong-Hyeon;Park, Young-Pil
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2002년도 추계학술대회논문초록집
    • /
    • pp.361.1-361
    • /
    • 2002

  • Coupling adjacent steel frame using elastic dampers fer control of response to low and moderate dynamic event is investigated in this paper. The complex modal superposition method is first used to determine dynamic characteristic, mainly modal damping ratio and modal frequency, of damper linked linear adjacent steel frame for fractical use. Dynamic response of steel frame linked by hydraulic-excitation method. (omitted)

  • PDF

Effect of kurtosis on the Flow Factors Using Average Flow Model

  • Cho, Yong-Joo;Kim, Tae-Wan;Koo, Young-Pil
    • KSTLE International Journal
    • /
    • 제3권1호
    • /
    • pp.7-11
    • /
    • 2002

  • The roughness effects are very important due to the presence of interacting asperities in mixed lubrication regime. An average Reynolds equation using flow factors is useful to determine the effects of surface roughness on mixed lubrication. In this study, the effect of kurtosis on flow factors is investigated using random rough surfaces generated numerically, The results show that flow factors are very sensitive to h/$\sigma$ according to the value of kurtosis in the partial lubrication regime.

  • PDF KSCI