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신문지를 이용하여 제조한 Potassium-Cyanoethylcellulose의 수분흡수력 및 시금치의 생육에 미치는 영향
김석균,김경제 동국대학교 산업기술환경대학원 1998 산업기술논총 Vol.4 No.-
This study was carried out to investigate the effects of potassium-cyanoethylcellulose(K-CEC), which is a natural polymer derivate, and polyacrylamide(PAM), which is a synthetic polymer, on growth of spinach under controlled environment biotron. Effects of KOH, acrylonitrile, and reaction temperature on water absorbing capacity of K-CEC were examined. Water absorbing capacity of K-CEC added with 40㎖ of 30% KOH and 9g of acrylonitrile was the highest at room temperature. PAM and K-CEC treatments showed higher early growth characteristics of spinach, number of leaves, leaf length, and leaf width than control. PAM and K-CEC treatments increased the vegetative yields of spinach, also. It would be need to make super absorbent polymers which possessed with higher water absorbing capacity in the future.
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최영칠,오재필,도성환,백홍규,김석균 건국대학교 의과학연구소 1994 건국의과학학술지 Vol.4 No.-
The postgastrectomy change of gall bladder was investigated by many literature since 1970s. Although the exact pathogenesis was not clearly defined but several hypothesis including the role of neuroendocrine that the act of vagal-cholecystokinin were documented. After gastrectomy, partial or total, even trunkal vagotomy, the size and internal character of gallbladder was changed and some case was revealed gall stone and cholecystitis. In a retrospective trial to determine wether gastric surgery induced gall bladder sludge and stone formation. Twelve patients with gastric cancer were ultrasonographically examined before and after gastrectomy serially. Gall bladder sludge formation was induced with a high frequency of 83.3% in patient who were carried out subtotal gastrectomy with gastrojejunostomy. And Gall bladder size was significantly increased after gastrectomy within 12 months and then the size was decreased rapidly. Regarding the type of gallbladder sludge, the most frequent pattern of changes during the follow-up course is as followed: aechogenic type (O) to precipitate type (P) following aechogenic type (O). Gall stone formation was not found in this study. We concluded that disturbance of food passage from stomach to small intestine more likely that changes in the release of food passage from stomach to small intestine more likely that changes in the release of CCK, followed by changes in the gallbladder kinetics, in response to the physiologic endogenous stimulation, could be deeply involved in the formation of gallstone after gastrectomy
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