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송기용 ( G Y Song ),김석봉 ( S B Kim ),이호원 ( H W Lee ) 대한임상검사과학회 1991 대한임상검사과학회지(KJCLS) Vol.23 No.1
A total of 1, 205 employees (male 683, female 206) of three companies located in Masan Free Export Zone were tested for HBs Ag by RPHA (Reverse passive hemagglutination) method and anti-HBs by PHA (Passive hemagglutination) method during the period from October the lst, 1989 to March 30th, 1990. The results of immune response rate after vaccinated 200 employees who indicated negative markers of HBs Ag and anti -HBs followed. The relations between HBe Ag and Anti-HBe makers conversion of 72 HBs Ag positive individuals and the value of transaminase were investigated. These results indicated that the percentage of positive HBs Ag was 6. 22% and anti-HBs was 18.76%. The immune response rate to the vaccination of 200 employees showed 94%. Positive rate HBe Ag of the 75 HBs Ag positive individuals was 37. 33% and that of anti-HBe was 29.34%. The highest positive rate of anti-HBe was on the 30-39 age group marking 44.44%. The markers conversion rate of HBe Ag and anti --HBe of the 72 HBs Ag positive individuals showed 36.11%. The results of markers seroconversion, in HBs-Ag positive cases proved to be HBe Ag negative 25.93% anti-HBe positive cases proved to be anti-HBe negative 66.67%. HBe Ag negative individuals and anti-HBe positive individuals were normal level of serum transaminase, but 33. 33% of the 27 H Be Ag positive individuals were abnormally high level of AST (Aspartate amino transferase) and 55. 56% of that individuals were abnormally high level of AL T (Alanine amino transferase).
임성준(S. J. Lim),김석봉(S. B. Kim),허훈(H. Huh) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.5
In this paper, forming limit diagrams of DP780, DP980, TRIP590 and TRIP780 steel sheets were investigated for high-speed sheet metal forming. The static and high speed forming limit tests were conducted with the aid of punch stretch tests with arc-shaped and square-shaped specimens. The width of arc-shaped specimen was changed to compose the uniaxial tension region of FLD and the friction condition was also varied to obtain the biaxial tension region of FLD. A high speed crash testing machine with a specially designed high speed forming jig was used in order to realize the high speed forming condition. The forming speed of each test condition was determined by comparing the results of the finite element simulation and the experimental results.