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조용준,양희철,은희철,유재형,김준형 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.5
용융염산화는 혼성폐기물과 유해폐기물을 효과적으로 산화 및 분해할 수 있는 소각대체기술중 하나이다. 본 연구에서는 직경이 0.079 m이고 높이가 0.653 m인 용융염산화 반응기에서 기체체류량 및 기-액 흐름특성에 대한 연구를 수행하였다. 액상으로 용융탄산나트륨을 기상으로 건조된 공기를 사용하였으며 기체유속(0.05-0.22 m/s)과 용융염온도(870-970℃) 변화가 기체체류량 및 기-액 흐름특성에 미치는 영향을 규명하였다. 기체체류량은 용융염 온도가 상승함에 따라 증가하였는데, 이는 용융염 온도의 증가로 인해 용융된 탄산나트륨의 점도와 표면장력이 감소하였기 때문이다. 실험에서 얻어진 기체체류량 데이터를 drift-flux 모델에 적용하여 용융염반응기 내의 흐름특성을 규명할 수 있었으며, 이를 통해 흐름영역에 따른 기체체류량을 정확하게 예측할 수 있었다. Molten salt oxidation is one of the most promising alternatives to incineration that can be used to efficiently destroy the organic components of mixed wastes and hazardous wastes. In this study, the gas holdup and gas-liquid flow characteristics are investigated in the molten salt oxidation reactor (0.076 m D×0.653 m H.). Effects of input air velocity (0.05-0.22m/s ) and molten salt temperature (870-970℃) on the gas holdup and flow characteristics have been studied. Molten carbonate as the liquid phase and air as the gas phase have been used in this study. The gas holdup increases with increasing molten salt temperature due to the decrease of viscosity and surface tension of molten carbonate. The experimentally obtained gas holdups in the molten salt reactor have been well described and characterized by means of drift-flux model. The gas holdups with variation of the flow regime have been well predicted.
정명수,박준희,김유수 조선대학교 통계연구소 1999 統計硏究所論文誌 Vol.1 No.1
The purpose of this study was to identify the social and psychological variables associated with sport consumption. A questionnaire consisted of 101 items measuring the social and psychological factors related to sport consumption and basic items asking the subject's demographic characteristics and amount of sport consumption through various means was administered to 414 Collegians(159 male and 255 female). The means of spot consumption investigated were viewing sport events in actual sport situations, viewing sports through T.V.. listening to sport broadcasting through radio. and reading newspapers, magazines and books on sports. Factor analyses were conducted on the 101 items and 17 social and psychological factors were found. The social and psychological factors were then used as independent variables for multiple regression analyses in order to identify the variables associated with various means of sport consumption. The main results indicated the following conclusions : (1) The social and psychological variables related to the general sport consumption were learning of sport skills and strategies, entertainment, socialization, curiousty, aesthetics, avoidance of reality, aggression, locality catharsis, stress-seeking, dependance and identification. (2) Variables such as socialization, learning of sport skills and strategies and entertainment were the common variables for all sport consumption besides the common variables. (3) Different social and psychological variables were identified for different means of sport consumption besides the common variables.
주정 중독 흰쥐에서 총담관 결찰이 간 및 혈청의 Glyoxalase I 활성에 미치는 영향
곽춘식,김여희,변용준 啓明大學校 醫科大學 1995 계명의대학술지 Vol.14 No.4
The activities of the rat liver and serum glyoxalase-I(GLO-I) were studied in cholestasis induced by common bile duct(CBD) ligation after chronic ethanol intoxication, and in cholestasis before acute ethanol intoxication to establish the biochemical background of alcohol hazards in hepatobiliary disease. GLO-I activities in the rat's liver and serum showed less increases when CBD was ligated after chronic ethanol intoxication than that in the CBD ligation alone. GLO-I activities in the rat's liver and serum showed no more increases when acute ethanol intoxication was induced after CBD ligation than that in the CBD ligation alone. On the other hand, when CBD was ligated after chronic ethanol intoxication, the value of Vmax of the liver GLO-I decreased significantly than that in the CBD was ligated alone. However, the values of Km of the liver GLO-I did not changes in the all experimental groups. Viewed from above results, when chronic ethanol intoxication is combined with cholestasis, GLO-I in the liver seems to be decrease its activity than that in cholestasis, and the cause of the decrease is thought to be decreased biosynthesis.
최정태,안무업,안희철,최영미,정재봉,서정열,유기철,이삼우,박석현,조준휘,김성환,김아진,송근정 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4
Purpose : This study was conducted to develop field triage, transportation, distribution, and prehospital care at a fire disaster by analyzing the victims of the fore that broke out at a bar in Incheon. Method : We analyzed the cases of the victims of a fire in Incheon in Oct. 1999. We determined the primary care hospital, the arrival time, the burn size, the outcome, and the injury type from the medical records, the concerned organ records, and interviews with concerned persons. Result : The total number of victims was 137: 56 prehospital deaths, 1 hospital death, and 80 survivals. The Pearson correlation coefficient between the burn size and the severity was -0.175. There were 121(89.6%) cases of inhalation injury, 59 (43.7%) cases of flame burns, 66 (48.9%) cases of hypoxic brain damage, and 16 (11.9%) cases involving other types of injury. Conclusion : The causes of death of the fire victims were inhalation injury and hypoxic brain damage due to CO poisoning and other toxic inhalants. We propose the use of a simple triage and rapid treatment(START) system and a reassessment the delayed category in fire disasters.