• Title/Summary/Keyword: Lee Sung-min

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Diterpene Alkaloids from Kyong-Po Buja (Processed Aconitium carmichaeli) (경포부자의 다이테르펜 알칼로이드 성분)

  • Choi, Sang-Zin;Kwon, Hak-Cheol;Min, Yong-Deak;Lee, Sung-Ok;Kim, Kyung-Ran;Choi, Sang-Un;Son, Kun-Ho;Kang, Sam-Sik;Lee, Kang-Ro
    • Korean Journal of Pharmacognosy
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    • v.33 no.3 s.130
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    • pp.187-190
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    • 2002

  • Three diterpene alkaloids, songorine (1), neoline (2), N-deethylneoline (3), were isolated from Kyong-Po Buja (Processed Aconitium carmichaeli, Ranunculaceae) which was used as Chinese traditional medicine with analgesic, anti-inflammatory and cardiotonic activity. Their structures were established by chemical and spectroscopic methods.

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Action mechanism of estrogen potentials of Ginko biloba extracts and its major components in human breast cancer cell

  • Kim, Yun-Hee;Oh, Seung-Min;Lee, Hee-Sung;Chung, Kyu-Hyuck
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.166.2-167
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    • 2003

  • The important biological activities of estrogen were reproduction and physiological processes in a number of tissues, including liver, bone, brain, blood vessels, adipose tissue and so on. The regulation of estrogen level is important a prevention of estrogen-related disease. Ginkgo biloba extracts (GSE) are extracted from leaves of the Ginkgo biloba tree. GSE contains 24％ phytoestrogen, which are kaempferol, quercetin, and isorhamnetin. (omitted)

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Analysis of two current feedback methods using shunt resistor (Shunt Resistor을 이용한 두 가지 전류 피드백 방법 분석)

  • Joo, Dong-Myoung;Jo, Won-Je;Shin, Seung-Min;Lee, Byoung-Kuk
    • Proceedings of the KIPE Conference
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    • 2010.11a
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    • pp.318-319
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    • 2010

  • 동기 전동기 구동에서는 정밀한 토크 제어를 위해 벡터 제어가 필요하다. 이를 위해 전류 피드백이 필요하며, 전류를 검출하는 방법으로 1개 또는 3개의 shunt resistor를 사용하여 각각 dc-link 전류 검출 또는 상 전류를 검출하는 것이 있다. 이 전류 검출 방법들의 문제 발생 구간을 분석한다.

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