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이성수,안규동,이병국,남택승,Lee, Sung-Soo,Ahn, Kyu-Dong,Lee, Byong-Kook,Nam, Taik-Sung 대한예방의학회 1989 예방의학회지 Vol.22 No.4
The objective of this study was to examine the correlation between personal exposure of toluene at workplace and the concentration of hippuric acid in urine of male solvent workers. The study groups are 60 toluene exposed workers who worked at video tape factory and printing factory. The results are as follows : 1. The coefficient of correlation between toluene concentration of personal exposure and concentration of urinary hippuric acid was 0.649 (regression equation Y=0.015X+0.936, Y=urinary hippuric acid concentration, X=Toluene concentration of personal exposure). 2. Urinary hippuric acid concentration of workers with TLV 100 ppm of toluene was calculated 2.44 g/L by the regression equation (Y=0.015X+0.936).
이성수,Lee, Seong-Su 대한출판문화협회 1992 출판저널 Vol.114 No.-
일본은 잡지왕국이라 해도 무방할 정도로 많은 잡지가 만들어지고 팔린다. 한국에 상륙한 패션시 "논노"는 한 서점에서 한달에 70-80권 정도나 판매되는 '인기도서'가 되어 있는 것이 현실이다. 이제는 자그마한 동네서점에까지 버젓이 놓여 있는 이들 일본잡지의 수입액이 1990년말 현재 7천억엔에 육박하고 있는 실정이다.
분배성 추적자 기법을 이용한 디젤 오염 토양의 정량적 오염도 평가에 관한 2차원 토조 실험 연구
이성수,이광헌,박준범,Rhee, Sung-Su,Lee, Gwang-Hun,Park, Jun-Boum 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.1
The partitioning tracer method is to estimate the residual saturation of nonaqueous phase liquid (NAPL) in soils by analyzing tracer's retardation induced by the reversible partitioning of tracer with NAPL. This study is to estimate the residual diesel saturation in soils using the partitioning tracer method. Two-dimensional soil box was used to represent the 2-dimensional flows of groundwater and tracer solution in the saturated aquifer, and the soil box was filled with soil and then saturated with water. The residual diesel saturation was induced in saturated soil, and the partitioning tracer method was applied. The results from batch-partitioning experiment indicated that the diesel-water partitioning was linear with respect to tracer's concentration, and the partition coefficient of tracer between diesel and water was measured by their linearities. The groundwater flow in the saturated aquifer was simulated in the 2-dimensional soil box, and the residual diesel contamination was visually identified. The results from the partitioning tracer method with or without diesel in soils confirmed that 4-methyl-2-pentanol, 2-ethyl-1-butanol and 1-hexanol, can be used as a detecting method for diesel contamination. By the accuracies of estimations for diesel contamination using the partitioning tracer method, 2-ethyl-1- butanol showed the highest accuracy with 83%.
이성수,최낙만,Lee, Seong-Su,Choe, Nak-Man 한국전자통신연구원 1988 전자통신 Vol.10 No.4
최근들어 반도체 제조업계에서는 반도체제조공정자동화에 대한 요구가 증대하고 있으며, 이의 실현을 위해서는 반도체 제조장비와 상위 컴퓨터간의 직접 접속에 의한 제조공정의 실시간 감시 제어가 선행되어야 한다. 본고는 통일된 통신규격의 부재로 야기되는 자동화의 장애요소를 해결하기 위하여 제정된 반도체 공정 자동화용 통신규격인 SECS(SEMI Equipment Communications Standard)의 주요 구성 및 기능에 대하여 기술한다. SECS는 컴퓨터를 이용한 반도체 공정 자동화를 효율적으로 실현하기 위한 유용한 수단으로 활용된다.