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Phenazine dioxide 유도체가 간 Xanthine Oxidase 활성에 미치는 영향
강일영(Il Young Kang),김상렬(Sang Yul Kim),김호식(Ho Shik Kim),허근(Keun Huh) 대한약학회 1990 약학회지 Vol.34 No.2
8-Acyl-2-hydroxyphenzaine-5,10-dioxides and 8-acyl-2-aminophenazine-5,10-dioxides bearing n-butanoyl, n-hexanoyl and n-octanoyl groups were synthesized. It was attempted to observe the effect of phenazine dioxide derivatives on the hepatic xanthine oxidase activity in this study. As the activity of xanthine oxidase, the key enzyme in the generation of superoxide anion radical (O2), was measured in the presence of phenazine dioxide derivatives, the action of 8-acyl-2-hydroxyphenazine-5,10-dioxide derivatives inhibited with increase of numbers of carbon atom bearing 8-acyl group. Moreover, when plotted on double reciprocal form, the Vmax value decrease as increase of numbers of carbon atom bearing acyl groups without affecting the Km value. However, the hepatic xanthine oxidase activity was not changed by 8-acyl-2-aminophenazine-5,10-dioxide derivatives.
1-Hexene과 2-Hexene의 발화특성에 관한 연구
최재욱,목연수,김상렬 釜山工業大學校 1990 論文集 Vol.32 No.-
This study was performed by experiments with ASTM's apparatus for determination of autoignition temperature to obtain autoignition characteristics of 1-Hexene and 2-Hexene. As results, minimum autoignition temperatures(MAIT) of 1-Hexene and 2-Hexene were respectively 254℃ and 257℃, and dropping volume corresponding to these temperatures was 0.23ml. Instantaneous ignition temperatures by using this dropping volume were 400℃ for 1-Hexene and 427℃ for 2-Hexen. Relation between ignition delay and temperature agreed with Semenov's equation and apparent activation energy for 1-Hexene and 2-Hexene was the same value of 39 Kcal/mol. Hence it was found that differences in autoignition characteristics of these materials were not significant.