• Title/Summary/Keyword: HANs

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NEW RELATIONSHIPS INVOLVING THE MEAN CURVATURE OF SLANT SUBMANIFOLDS IN S-SPACE-FORMS

  • Fernandez, Luis M.;Hans-Uber, Maria Belen
    • Journal of the Korean Mathematical Society
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    • v.44 no.3
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    • pp.647-659
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    • 2007

  • Relationships between the Ricci curvature and the squared mean curvature and between the shape operator associated with the mean curvature vector and the sectional curvature function for slant submanifolds of an S-space-form are proved, particularizing them to invariant and anti-invariant submanifolds tangent to the structure vector fields.

  • https://doi.org/10.4134/JKMS.2007.44.3.647 인용 PDF KSCI

On the Root Rot of Ginseng(I) (인삼근부병에 관한 연구 1)

  • 김종희;이민웅
    • Korean Journal of Microbiology
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    • v.12 no.2
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    • pp.94-98
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    • 1974

  • This study was conducted from April 1 to September 31, 1973. Ten strains of Fusarium spp. were isolated from the diseased ginseng in two local areas at Kangwha-Gun nad Kumsan-Gun in Korea. Among of them, 2 strains ($G_1$, $G_4$) did not have virulence to ginseng in reinoculation. Their cultural, morphological characteristic and hose virulence to pea seedling were examined. Taxonomical identification of 8 isolates followed by the method of Wollenweber, Snyder nad Toussoun, Booth, Matuo and Snyder. All of eight strains were identified as the Fusarium solani f.sp.pisi(Jones) Synd. et Hans.

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Facile Synthetic Routes to Prepare α-Muricholic Acid, Hyocholic Acid, and Their Taurine Conjugates

  • Kang, Dong Wook;Luecke, Hans F.
    • Bulletin of the Korean Chemical Society
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    • v.34 no.8
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    • pp.2436-2440
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    • 2013

  • ${\alpha}$-Muricholic acid was synthesized through 9 steps from chenodeoxycholic acid with 26% overall yield. Hyocholic acid was synthesized through 8 steps from the same starting material with 63% overall yield. Taurine conjugates of ${\alpha}$-muricholic acid and hyocholic acid were also prepared via their pentafluorophenyl ester.

  • https://doi.org/10.5012/bkcs.2013.34.8.2436 인용 PDF KSCI

Griseusin C, a Novel Quinone Derivative from a Marine-Derived Fungus Penicillium sp.

  • Li, Xiang;Zheng, Yinan;Sattler, Isabel;Lin, Wenhan
    • Archives of Pharmacal Research
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    • v.29 no.11
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    • pp.942-945
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    • 2006

  • A novel quinone derivative, Griseusin C (1), along with a known quinone, Naphthoquinone C (2), was isolated from the lyophilized culture broth of the marine-derived fungus Penicillium sp. The structures were elucidated on the basis of extensive 1D-and 2D-NMR, as well as HRESIMS, spectroscopic analysis. The relative stereochemistries of the compounds were assessed by NOESY analysis.

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MEMBRANE-BASED GAS AND VAPOR SEPARATIONS

  • Wijmans, Hans
    • Proceedings of the Membrane Society of Korea Conference
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    • 2004.05a
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    • pp.3-6
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    • 2004

  • Industrial gas separation by membranes began in 1980 with the introduction of hollow-fiber polysulfone membrane systems by Permea, at that time a division of Monsanto. This first application was the recovery of hydrogen from ammonia reactor purge gas and was soon followed by the generation of nitrogen from air. Today, membrane gas separation ranks second behind cryogenic distillation in terms of nitrogen production, and this application has drawn the industrial gas companies into the membrane field.(omitted)

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