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정상 및 재생간의 Cytosol이 흰쥐의 대사기능에 미치는 영향
윤창식,손기섭 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2
Extensive hepatic resection for massive injury and malignant tumor of liver has been markedly increased during past a few decades. Liver regeneration has been shown following partial hepatectomy by many authors with clinical and experimental studies, and considerable experiments have done to find out what is the real property of restoration, when it initiates, when it is most active and when it terminates after partial removal of liver, but still it is uncertain. The purpose of this paper is to provide to focus on the metabolic function, biochemical changes, following administration of cytosol extract from normal and regenerating livers in the normal and partially hepatectomized liver in rats. The results of this experimental study were summerized as follows: 1. The values of SGOT were increased remarkably in all groups (P<0.01). 2. The values of SGPT were elevated significantly in all groups as high as four times or six and a half times (P<O.01). 3. The values of glucose were seen considerably increasing rate in all groups except I -B, II -B, III-B and I.-D. Group I and II were seen very significant changes statistically as P<0.01 and group III were seen considerable change as P<0.05. 4. The values of BUN were seen considerable changes in group II only (P<0.05). 5. The values of total bilirubin were seen very remarkable changes in group II only (P<0.01). 6. The values of total protein were revealed very significant decreasing rate in group I and group II (P<0.01). 7. The values of alkaline phosphatase and albumin were revealed no significant changes in all groups. 8. The group II were revealed most significant changes. It was supposed that maximum response after partial resection of liver was seen at 12 hours in the rat.
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김유식,윤창식 진주여자전문대학 1997 論文集 Vol.20 No.-
There was exprienced to flow characteristics of The Circular Turbulent swirl Jet by numerical, experiental methods. The finite differential method was adapted for numerical analysis by using k^(-ε) turbuence model, and The Swirl Jet was maken by variable blade. The operating fluid was used airs The Jet velocity tested flow characteristics of axial velocity, radial velocity and etc about 10m/s, 20m/s and 30m/s. The increase of the swirl angle is reached to decrease of the axial velocity and to increase of the radial ones.
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스파크점화 기관의 회전형 흡배기장치의 개발에 의한 체적효율 향상에 관한 연구
김치원,윤창식,김유식 경남대학교 신소재연구소 1995 論文集 Vol.5 No.-
최근 자동차용 기관의 연구에 있어서는 고성능, 고효율과가 추진되고 있으며, 본 연구에서도 기관의 체적효율 향상을 달성하기 위하여 회전밸브를 설계 제작하였으며 기존의 포핏밸브와 실험적 방법을 통하여 비교하였다. 본 연구의 결과 회전식 흡배기 밸브장치에서 유입유동 저항이 현저하게 낮아짐으로서 체적효율의 향상을 기할 수 있었으며, 따라서 자동차용 기관의 성능이 높게 나타남을 확인할 수 있었다. In recent years, the study on the high efficiency of the internal combustion engine has been mainly proceeding. In this study, we developed rotary valve to achieve the improvement of volumetric efficiency and to be simple construction. And then made a comparative analysis between rotary and poppet valve. In this experiment, rotary valve enlarged the flow area of valve port to minimize the resistance of the fluid flow and to flow smoothly in intake and exhaust process. Indeed, valve timing was controlled properly lest positive pressure in exhaust process should affect intake process. Motoring and firing experiments were using engine speed and air-fuel ratio a s the principle parameter and the full opening of throttle valve and minimum spark advance for best torque(MBT) as engine operating variables.
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