• Proceedings of the Korea Concrete Institute Conference
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• 2005.05b
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• pp.445-448
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• 2005

In this paper, waterproofing improvement of cement mortar is researched by comparing cement mixed with natural inorganic minerals with OPC under the same condition. The result shows that cement mixed with natural inorganic minerals has less permeability and absorption compared to OPC, which can be used as important data for improvements of durability and waterproofing of concrete structures.

• Journal of computational fluids engineering
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• v.7 no.1
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• pp.28-35
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• 2002

The effect of concave curvature on the natural convection has been numerically studied using the higher-order finite difference method. The heating wall in a enclosure is approximated by a cosine function. The heat transfer coefficient is analyzed for three Rayleigh numbers and five amplitudes. For Ra = 10/sup 8/ the separation and reattachment are observed on the adiabatic walls. The wall heat transfer are slightly changed by the increasing curvatures.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2003.10a
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• pp.99-99
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• 2003

• Proceedings of the Korean Society of Applied Entomolohy Conference
• /
• 2003.10a
• /
• pp.100-100
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• 2003

• Bulletin of the Korean Chemical Society
• /
• v.27 no.11
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• pp.1865-1868
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• 2006

• Proceedings of the Zoological Society Korea Conference
• /
• 2003.08a
• /
• pp.209.2-209
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• 2003

No Abstract, See Full Text

• Archives of Pharmacal Research
• /
• v.8 no.4
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• pp.257-260
• /
• 1985

Based on spectral and chemical evidences two glycosides isolated from Korean red ginseng are characterized as isomaltol-.alpha.-D-glucopyranoside. These compounds are not found in Korean white ginseng.

• Proceedings of the Korean Society of Life Science Conference
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• 2001.09a
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• pp.110-110
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• 2001

• Proceedings of the Korean Society of Life Science Conference
• /
• 2001.02a
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• pp.80-80
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• 2001

• Archives of Pharmacal Research
• /
• v.6 no.1
• /
• pp.75-77
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• 1983

Two phenolic acids were isolated from the hydrolyzed butanol fraction of Aralia continenetalis K. in crystalline form. They were identified by chemical tests and by analysis of spectra of UV, IR and NMR as ferulic acid and caffeic acid.