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패혈증 환자에서 유전자 재조합 인 성장 호르몬 투여가 질소 균형에 미치는 효과
고정민(J . M . Koh),박중열(J . Y . Park),채희복,김진엽(J . Y . Kim),김철희(C . H . Kim),최철수(C . S . Choi),김양수(Y . S . Kim),임채만(C . M . Lim),고윤석(Y . S . Koh),이기업(K . U . Lee),김기수(G . S . Kim) 대한내과학회 1997 대한내과학회지 Vol.53 No.1
N/A Background: Increased catabolism in patients with severe sepsis results in loss of body protein, which is associated with loss of skeletal muscle, impaired immune function and delayed wound healing. However, conventional nutritional support has been unsuccessful in inducing a positive nitrogen balance in septic patient. Recently, growth hormone (GH) has been reported to improve the nitrogen balance in patients with burns and multiple trauma. Methods: As a prospective, randomized, placebo-controlled trial, we studied the effects of 8 day treatment of recombinant human GH(rhGH) on nitrogen balance in patients with sepsis. Twenty four patients with sepsis admitted to medical intensive care unit from July, 1993 to June, 1995 were divided into GH-group(n=13) and control group(n=11). RhGH (EutropinR, Lucky) 0.4IU/kg or same volume of saline was administered once daily as subcutaneous injection for 8 days. Results: Twenty one patients((H group; 12, control group; 9) completed the study. Nitrogen balance was negative on day O, but became positive on day 2 and remained positive throughout the study period in the GH group. Mean nitrogen production rate [nitrogen excretion rate(g/day+△BUN(mmol/L/day)×0.019×body weight(kg)) was significantly lower in GH group than that in control group(12.8±3.9g/day vs. 16.8±4.1g/day p<0.05). Conclusion: GH treatment improved nitrogen balance in patients with severe sepsis and this improvement was associated with a decrease in nitrogen production rate. These results suggest that GH administration may be beneficial in nutritional sup- port for patients with severe sepsis.
액슬하우징의 온간 후 판단조에서 모서리 박육 방지를 위한 장치의 개발
김장섭(J. S. Kim),김기수(K. S. Kim),심상현(S. H. Shim),엄재근(J. G. Eom),전만수(M. S. Joun) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.5
In this paper, a novel warm plate forging process of an axle housing is presented. A die system is proposed to reduce the inherent thickness reduction along the bent comer of the product which deteriorates structural strength and fatigue life in its service. The mechanism of the die system is given and its effect on comer thickness of the product is revealed by two dimensional finite element analysis under plain strain assumption. Three-dimensional finite element solutions are also given to verify validity of the two dimensional approach. The die system has been successfully applied to manufacturing the axle housings of medium or large trucks.