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강오봉(OB kang),김순동(SD Kim),박원정(YS Park),이지제(GJ Lee) 대한산부인과학회 1966 Obstetrics & Gynecology Science Vol.9 No.3
The authors presented a case of serum hepatitis combined stillbirth in full term delivery calivery by frequent transfusion of whole blood during pregnancy period with a brief feview of literature.
육상 중·장거리 선수의 탈진적인 지구성 운동이 활성산소 산물 및 항산화 효소에 미치는 영향
박순진,오봉석 龍仁大學校 1998 용인대학교 논문집 Vol.15 No.-
Middle and long distance runners of track and field consume a lot of oxygen during endurance training, so they can be regarded as a group who are affected by free radical. But they have the capacity to continue an exhaustive endurance training for a long time without any characteristic bad effect on body. This study was designed to investigate the effect of exhaustive endurance exercise on the reactive oxygen species(malondialdehyde ; MDA) and on the antioxidant enzymes(superoxide dismutase; SOD, catalase: CAT). The results were as follows : 1. MDA increased significantly right after exhaustive endurance exercise (p〈0.01), but there was no significant difference at 30min, 60min after exercise(p)0.05). 2. SOD increased significantly right after exhaustive endurance exercise (p〈0.01), but there was no significant difference at 30min, 60min after exercise(p)0.05). 3. CAT did not change significantly right after exhaustive endurance exercise(p)0.05), but its level was at the highest point at 60min after exhaustive endurance exercise. This results indicate that although middle and long distance runners of track and field can be affected by free radical during exhaustive endurance exercise, they also can be recovered immediately from effect of free radical. This results suggested that endurance training for a long period enhance the antioxidant capacity.
강오봉(OB kang),박원정(YS Park),홍자선(JS Hong),이지제(GJ Lee) 대한산부인과학회 1966 Obstetrics & Gynecology Science Vol.9 No.3
A case of man head sized, 2.3kg weighted dermoid cyst in 19 year old married girl was presented and briefly reviewed it`s literature.
김태형(Tae Hyung Kim),권오봉(Oh Boong Kwon),박정(Jeong Park),길상인(Sang-In Keel),윤진한(Jin-Han Yun),박종호(Jong Ho Park) 한국연소학회 2015 한국연소학회지 Vol.20 No.4
Oxy-methane nonpremixed flames diluted with CO₂ were investigated to clarify impact of radiation heat loss and chemical effects of additional CO₂ to oxidizer stream on flame extinction. Flame stability maps were presented with functional dependencies of critical diluents mole fraction upon global strain rate at several oxidizer stream temperatures in CH₄-O₂/N₂, CH₄-O₂/CO₂, and CH₄-O₂/CO₂/N₂ counterflow flames. The effects of radiation heat loss on the critical diluent mole fractions for flame extinction are not significant even at low strain rate in nonpremixed CH₄-O₂/N₂ diffusion flame, whereas those are significant at low strain rate and are negligible at high strain rate (> 200 s<SUP>-1</SUP>) in CH₄-O₂/CO₂ and CH₄-O₂/CO₂/N₂ counterflow flames. Chemical effects of additional CO₂ to oxidizer stream on the flame extinction curves were appreciable in both CH₄-O₂/CO₂ and CH₄-O₂/CO₂/N₂ flames. A scaling analysis based on asymptotic solution of stretched flame extinction was applied. A specific radical index, which could reflect the OH population in main reaction zone via controlling the mixture composition in the oxidizer stream, was identified to quantify the chemical kinetic contribution to flame extinction. A good correlation of predicted extinction limits to those calculated numerically were obtained via the ratio between radical indices and oxidizer Lewis numbers for the target and baseline flames. This offered an effective approach to estimate extinction strain rate of nonpremixed oxy-methane flames permitting air infiltration when the baseline flame was taken to nonpremixed CH₄-O₂/N₂ flame.