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강부경,이종섭,신태용,이은희,김형민 원광대학교 생명공학연구소 1996 생명공학연구소보 Vol.4 No.1
We determined for IgE in serum based on the enzyme-linked immunosorbent assay(ELISA) in vivo after intraperitoneal injection of Solanum lyratum extract for 14 days. The experiment showed as well whole spleen cells that Solanum lyratum extract enhanced IgE production in vivo. Solanum lyratum extract significantly facilitated the production of IgE by LPS-stimulated murine spleen cells. Solanum lyratum THUNB. also enhanced IgE production from mouse whole spleen cells. Lypopolysaccharide(LPS) stimulated IgE production was enhanced 1.4-fold to 2.7-fold by the addition of Solanum lyratum extract over a period of 7 days.
Acrylonitrile Butadiene Rubber의 열적 열화 특성
김기엽,강현구,이청,류부형 한국안전학회 2003 한국안전학회지 Vol.18 No.4
Thermal degradation of Acrylonitrile butadiene rubber(NBR), which is used for 0-ring material as elastomeric sealed diaphragm valve in the nuclear power plants, is examined. The thermal degradation is accelerated at l30℃ by Arrhenius exploit method using the activation energy calculated by thennogravimetric analysis. The weight loss temperature and glass transition temperature are verified for thermally aged NBR The relationship between dynamic mechanical properties and elongation at break are also investigated. The threshold value of thermally aged NBR is a ten year in the change of elongation at break.