http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
조을훈(E. H. Cho),김정균(J. K. Kim),오상기(S. G Oh),이승호(S. H. Lee) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.5
Recently, it is developed a variety of electrical contacts on the switch. The contacts will be processed for 2.30 of embossing type as a three-cladding material (Ag-Cu-Fe) used. Embossing type of electrical contacts are working to increase the hardness without plate thickness of the material and local plastic deformation of the shape in process. In this study, we are made of contact in total of 5 spot embossing and measured outside diameter, depth in jig pin by using microscope, respectively. We were found that the important of height, outside diameter of embossing because of spot process for joined bimetal and contact in processing of manufacture thermostat. The pin was formed by the processing for HSS material by E.D.M (electrical discharge machine)
택시운전수들의 혈중 Vanadium 함량에 관한 조사연구
김준연,문덕환,김성천,배기택,김용완,김정균 인제대학교 1986 仁濟論叢 Vol.2 No.1
Automobiles using fossil fuel as a power source give out a significant amount of exhaust gas including vanadium, which causes air pollution and may lead to significant health problems for the general population. For the purpose of indirectly evaluating the effect of vanadium on urban air pollution and obtaining the basic data to its subsequent health effects, the authors determined vanadium levels in blood of 107 taxi drivels in Pusan by graphite furnace atomic absorption spectrophotometry, and the control group was 76 college students. The survey was taken from August 1985 to November 1985. The obtained results were as follows : 1.The mean concentration of vanadium in blood of drivers was 29.5±16.0ppb, and it was higher than 21.6±16.7ppb of the control group(p<0.01). 2.The mean concentration of vanadium in blood of drivers was not dependent on age of drivers nor driving duration.