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김원만 ( Won Man Kim ) 한국물환경학회 1986 한국물환경학회지 Vol.2 No.1
The seasonal and spatial fluctuation of petroleum-degrading bacterial population was wstimated in the coastal water near Soch`on-gun. The number of petroleum-degrading bateria measured in the range of 3.0 × 10^1 cells/1 - 7.5 × 10^2 cells/1 with a relatively small population. The proportions of the number of petroleum-degrading bacteria to total viable counts were in the range of 0.031% - 0.000064%. Pseudomonas, Enterobacteriaceae, Aeromonas, Vibrio, Acinetobacter and Staphylococcus were isolated as petroleum-degrader. To examine correlations for petroleum-degrading bacteria and other environmental factors, correlation coefficients were obtained. Highly significant correlations were observed between petroleum-degrading bacterial number and total viable counts and also shown between the number of petroleum-degrading bacteria and biochemical oxygen demand.
김정만 ( Jung Man Kim ),서병성 ( Byung Seong Suh ),정갑열 ( Kap Yeol Jung ),김동일 ( Dong Il Kim ),김원술 ( Won Sool Kim ),조한석 ( Han Seok Cho ),김진욱 ( Jin Wook Kim ),권재 ( Jae Kwon ),윤동영 ( Dong Young Yoon ),김정일 ( Jung 한국산업위생학회 2007 한국산업보건학회지 Vol.17 No.2
Firemen are directly exposed to various harmful chemicals, physical factors and mental stress during rescue and firefighting. In fire extinguishing, unstable posture, poisonous gas, dust, high temperature and heavy equipments are possible hazardous factors. The alertness for emergency, shift work, job strain and stress are also possibly hazardous. Therefore, this study aimed to investigate the prevalence of musculo-skeletal symptoms and job stress and to determine risk factors in firemen. This study was carried out in a group of 226 firemen in Busan City, Korea. Standardized Nordic Questionnaire was used to investigate the prevalence of musculo-skeletal symptoms and Psycho-social Well-being Index (abbreviated PWI) was used to investigate the prevalence of job stress. General and occupational characteristics were included education, marital status, alcohol and smoking history, working duration, and work shift system. Body mass index (BMI) scores were calculated by physical examination including height and weight. Concerning musculo-skeletal complaints, the commonest site was neck, and shoulder, lower back, upper back were the next. Complaint site above one area of body was about 80%. From multiple logistic regression analysis, working duration was significant variable in musculo-skeletal symptoms. Odds ratio were 15.4 in working duration. About 16.8% was high risk stress group. From multiple logistic regression analysis, shift work and alcohol drinking were significant variables in PWI scores. Odds ratios were 2.25 in shift work. Accordingly, interventions are needed for health promotion of long term and shift worker.
ANSI/IEEE IEC 規格에 따른 變壓器의 短絡强度試驗의 比較
김선구(Sun-Koo Kim),김선호(Sun-Ho Kim),김원만(Won-Man Kim),나대열(Kim Dae-Ryeol),노창일(Chang-Il Roh),이동준(Dong-Jun Lee),정흥수(Heung-Soo Jung) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Generally Short Circuit Test of transformers are tested according to IEEE std C57.12.00-2000, IEC 60076-5(2000-07), ES148(1998.6.26) or KS C4309(2003). But ES148 (1998.6.26) is same as IEEE std C57. 12.00-2000 and KS C4309(2003) is revising coincidence with IEC 60076-5 (2000 ~07). On this study condition of the transformers before short circuit test, calculation method for test current peak value, tolerance on the asymmetrical peak and r.m.s value, short circuit testing procedure, number of short circuit test, duration short circuit test, and detection of faults and evaluation of short circuit test result will be compared with ANSI and IEC.
김원만,Kim, Won-Man 한국상하수도협회 1980 水道 Vol.21 No.-
이 원고는 1980. 4. 9-10. 2일간 서울 신라호텔에서 열렸던 한일하수도기술토론회에서 일본오토트롤주식회사 가촌 굉기술부차장이 발표한 내용을 번역하여 게재하는 것입니다.