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- 저자 : Kap-Seoung Yang (검색결과 2 건)
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성장호르몬이 결핍된 흰쥐에서 성장호르몬 투여가 체조성 및 당대사에 미치는 영향
김현만,허갑범,이현철,이관우,정윤석,강엽,박덕배,양승오 대한내분비학회 1997 Endocrinology and metabolism Vol.12 No.1
Background: It is well known that growth hormone(GH) stimulates animal growth, but studies on metabolic effects of growth hormone have recently been increasing. The purpose of this study was to clarify the effects of growth hormone treatment on body composition and glucose metabolism in hypophysectomized growth hormone-deficient rats. Methods: The 20-week-old rnale Sprague-Dawley rats were hypophysectomized and replaced with cortisol and thyroxine for 8 weeks, then administered with recombinant human growth hormone for 2 weeks. Group 1 consisted of intact controls(n 15), while group 2 consisted of hypophysectomized controls(n 12), and group three consisted of those with GH treatment(n 13). The body weights, body composition, blood glucose levels, plasma insulin-like growth factor-I (IGF-I) levels, euglycemic hyperinsulinemic clamp test, and glycogen synthase activities in gastrocnemius muscle were measured before and after growth hormone treatment. Results: Plasma IGF-I levels in GH-treated group increased to intact control group levels after 2 weeks of GH treatment. There were significant changes in body composition after the treatment (fat mass significantly decreased and lean body mass significantly increased). There were no changes in glucose metabolism in peripheral tissue after 2 weeks of GH treatment. Condusion: Human GH treatment(4 IU/kg/day) in adult hypophysectomized GH-deficient rats changed the body composition, but did not alter the glucose metabolism in peripheral tissue. (J Kor Soc Endocrinol 12:53-60, 1997)
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Oxidative Stabilization Behaviors of Petroleum-based Isotropic Litch fiber Spun by Melt-blown Method
Chan Kim,Su-Hyun Lee,Young-Min Kim,Kap-Seoung Yang 한국탄소학회 2001 Carbon Letters Vol.2 No.3
탄소섬유나 활성탄소섬유의 물성과 탄화 수율은 피치의 화학적 구조, 방사방법, 산화안정화, 탄소화, 활성화 등의 각 조건에 의해서 크게 영향을 받는다. 산화안전화 공정은 열가소성 피치를 열경화성 피치로 변환시켜 후속하는 고온 탄소화,활성화 공정에서 섬유의 융착 및 열용융을 방지하기 위해 섬유를 표면으로부터 산화처리하는 과정이ㅏ[1-4]. 산화안정화 공저을 행하지 않고직접 탄소화나 진행되어 탄화되기보다는 연소된다[2].
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