• Title/Summary/Keyword: Cheon Won Gi

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The Development History Of Disease Bi(痞病) Reflected In "Euhakibmun(醫學入門)" ("의학입문(醫學入門)"에 반영된 비병(痞病)의 발전과정(發展過程))

  • Jo, Hak-Jun
    • Journal of Korean Medical classics
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    • v.24 no.5
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    • pp.131-145
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    • 2011
  • I had come at the conclusion of the development history of Disease Bi(痞病) reflected in Yi Cheon (李梴)'s work, "Euhakibmun(醫學入門)" in the respects of the causes, mechanism, symptoms, differential diagnosis and treatments. The causes of Disease Bi(痞病) mentioned at "Euhakibmun(醫學入門)" followed the Ju Dan-Gyeo(朱丹溪)'s theory. The mechanism of it went after the viewpoints of "Nae-Gyeong(內經)", Jang Jung-Gyeong(張仲景), Yi Dong-Won(李東垣) and Wang Ho-Go(王好古). The symptoms of it kept the Ju Dan-Gyeo(朱丹溪)'s theory. Yi Cheon distinguished Disease Bi(痞病) from Gyeol-Hyung(結胸) according to Jang Jung-Gyeong's theory. He knew it from abdominal dropsy(脹滿) according to Ju Dan-Gyeo's theory. He also divided it into two respects of deficiency(虛) and excessive(實) from Yi Dong-Won's viewpoint. Jang Jung-Gyeong first suggested that treatments of it could be selected according to the difference of deficiency, excessive(實), cold(寒), hot(熱), sputum(痰), fluid(飮), blood(血) and food(食). Yi Dong-Won insisted many doctors could make a mistake because they only used herbs for Gi(氣藥) instead of herbs for blood(血藥) together. Wang Ho-Go(王好古) maintained his opinion that treatments of both digestion(消導) and assistance(補益), remedies of bitter and hot herbs can recover patients from Disease Bi(痞病). Yi Cheon followed their theories properly.

해양 곰팡이 Thraustochytrium aureum의 형태학적 변화와 DHA 생산과의 특성 규명

  • Park, Gyeong-Won;Park, Cheon-Ik;Jo, Dae-Won;Heo, Byeong-Gi
    • 한국생물공학회:학술대회논문집
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    • 2000.11a
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    • pp.273-276
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    • 2000
  • Marine fungus, Thraustochytrium aureum ATCC 34034, was incubated in artificial sea water media in order to produce docosahexaenoic acid(DHA). Cultures were performed at $24^{\circ}C$ in light for 13 days with orbital shaker at 100rpm. Maximum cell productivity of 1.34g/L and DHA yield of 41.4 mg/L were obtained by using this method, which is almost the twice level of DHA yield obtained for the strains reported previously. This strain did produce much more DHA after sporangium disruption.

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CONSTRUCTIONS FOR SPARSE ROW-ORTHOGONAL MATRICES WITH A FULL ROW

  • Cheon, Gi-Sang;Park, Se-Won;Seol, Han-Guk
    • Journal of the Korean Mathematical Society
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    • v.36 no.2
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    • pp.333-344
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    • 1999
  • In [4], it was shown that an n by n orthogonal matrix which has a row of nonzeros has at least ( log2n + 3)n - log2n +1 nonzero entries. In this paper, the matrices achieving these bounds are constructed. The analogous sparsity problem for m by n row-orthogonal matrices which have a row of nonzeros in conjectured.

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