http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
횡형과 주형의 접합부에서 횡형단부의 경계조건에 관한 연구
이채성(Chae Sung Lee),김우기(Woo Gi Kim),이기범(Ki Bum Lee),윤순종(Soon Jong Yoon),윤종열(Chong Yul Yoon),이원복(Won Bok Lee) 한국강구조학회 1996 韓國鋼構造學會誌 Vol.8 No.2
In a beam-to-girder connection system, the boundary condition of the cross beam is assumed as a fixed support and the cross beam is welded to the web of a girder in practice. But, in general, the torsional rigidity of I-shape girder arid the out-of-plane bending rigidity of slender-web plate are small. Hence the interaction behavior between the cross beam and the girder must be considered in the connection design. In this paper, cross beam ends are assumed as a fixed support and the moment reduction effects, caused by the torsion of a main girder and the out-of-plane deformation of the web, are evaluated, respectively. Based on this practical example, it was found that the moment reduction is significant and therefore it is recommended to design the cross beam as a simply supported beam.
간세포암 환자에 있어서 AST / ALT 비의 진단적 의의
박병채(Byung Chae Park),안수열(Su Yul Ahn),김영곤(Young Gon Kim),조기범(Gi Beum Cho),김미선(Mi Sun Kim),고용호(Yong Ho Ko),박무인(Mu In Park),우인기(In Ki Woo) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.5
N/A To assess the possibility that the measurement in peripheral venous blood of AST/ALT ratios might be helpful in detection of hepatocellular carcinoma (HCC), the AST/ALT ratios were evaluated in 282 cases of chronic active hepatitis (CAH), 59 cases of CAH with early cirrhotic change (CAH with LC), 213 cases of liver cirrhosis (LC), and 220 cases of hepatocellular carcinoma (HCC). The ratio of male to female was 72.9% to 27.1% in HBsAg seropositive groups and 68.8% to 3I.2% in HBsAg seronegative groups, respectively. The mean age was 43.7 years old in HBsAg seropositivity and 49.9 years old in HBsAg seonegativity, respectively. In HBsAg seropositive groups, the AST/ALT ratio was 0.68+-0.30 in CAH group, 0.78+-0.19 in CAH with LC, 1.68+-0 83 in LC, 2.17+- l.60 in HCC. In HBsAg seronegative groups, AST/ALT ratio was 0.71+-0.58 in CAH group. 0.82+-0.31 in CAH with LC, 1.72+-0.87 in LC, 1.95+-1.38 in HCC. AST/ALT ratio was gradually increased according to the progress of the chronic liver disease in both HBsAg seropositive groups as well as negative groups. AST/ALT ratio was significantly (p<0.005) elevated in patients with HCC, being above 2.0, as compared to other groups. AST/ALT ratio in the patients with serum AST>200 units was higher than in those with AST<200 units, and the mean AST/ALT ratio in the HCC patients with AST.> 200 units was significantly higher than in other chronic liver disease. AST/ALT ratio above 3.3, without evidence of circulatory disturbance, was almost entirely restricted to the patients with HCC. In conclusion, since elevated AST/ALT ratio reflects the progress of chronic liver disease from CAH to HCC, a gradual increase in AST/ALT ratio might be a useful marker assessing for detection of HCC.