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반응표면법을 이용한 태양열 Dish 구조부 최적설계에 관한 연구
신용욱(Y. W. Shin),송병욱(B. U. Song),서태일(T. I. Seo),정연승(Y. S. Jung) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
Solar energy to produce hot water and solar collector Dish installed on the outside of the structure, and external factors that pose a threat to the structure is a wind. Thus, against the wind with proven reliability design method should be applied. In addition, the nature of each region in the wind velocity changes that occur every so considering various wind conditions in finite element analysis should be performed. In this study, as some may want to check the structural analysis that Dish structure is subjected to drag by the wind, the maximum stress of the cantilever occurs, is running on Dish structure and thickness of the cantilever in the design factor by this apply the center synthesis planning method based on the wind speed and setting the design parameters nine.
신용욱,김동현,김남재 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2003 東西醫學硏究所 論文集 Vol.2003 No.-
We have conducted to characterize the physico-chemical change and pharmacological transformation of traditional herbal medicines by means of processing. Processed Gardeniae Fructus was prepared by healing of fruit of Gaidenia jasminoides(GF) for 30-50 minute in the roster designed for herb processing. The contents of drying Boss, water extract, diluted ethanol extract, ether extract and geniposide in non-processed GF and processed GF were examined. The contents of drying loss, water extract and geniposide in processed GF showed a decrease as compared with those of non-processed GF. however the contents of dilute ethanol and ether extract showed a increase as compared with those of non-processed GF. The rate of decrease/increase of those index were in proportion to heating time. And, biological activities of methanol extract of non-pro-cessed GF and processed GF were investigated. DPPH scavenging effects and inhibitory effect of xanthune oxidase and hemolysis of processed GF exhibited more effective than those of non-processed GF in vitro. Accelerating effect of large intestinal transport and purgative action of non-processed GF were discriminated by processing of GF. Methanol extracts of non-processed GF and processed GF showed the protective effects against the hepatotoxicity induced by α-naphthylisothiocyanate in rats. These results suggested that the transformation of biological actives of GF by means of processing may be due to the physico-chemical change of the constituents in GF by heating.
신용욱,최혁재,Park, J. E.,김동현,박정일,김남재 경희대학교 동서의학연구소 2006 東西醫學硏究所 論文集 Vol.2006 No.-
Processing of traditional herbal medicine is one of the pharmaceutical technique in oriental medicine. Most frequently used processing method in oriental medicine are roasting and steaming. in this studies, to elucidate the pharmacological transformation of traditional herbal medicine by means of processing them, Ginseng Radix (root of Panax ginseng, Araliaceae) was used as a sample. Processed ginseng radix (SGR, Sun Ginseng) was prepared by steaming of roots of white ginseng (GR) for 3 hours at 120℃. The biological activities of methanol extract of GR and SGR were investigated. According to DPPH radical scavenging effects, and inhibitory effects of xanthine oxidase and AAPH induced hemolysis, PGR exhibited more effective than those of GR in vitro. And, the antifatigue effect of GR and SGR were investigated using a weight-loading forced swimming test by monitoring swimming times and prolonged intensity exercise model rats by measuring blood biochemical parameters. GR and SGR were significantly prolonged swimming times in 8% body weight ratio loaded mice. Also, they had the inhibitory effects on the decrease of blood glucose levels, the elevation of serum creatinine, lactic acid and free fatty acid, and lactic dehydrogenase activities in forces swimming rats with 1% of the body weight attached to the neck for 3 hours. SGR was more excellent than GR on these effect. Also, these effects were transformed to the n-butanol fraction of methanol extract of SGR. From these results, it can be considered that SGR has antifatigue effect.