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초고강도 콘크리트와 철근의 부착 특성에 대한 실험적 연구
국경훈 ( Kook Kyung-hun ),이슬기 ( Lee Seul-kee ),정형철 ( Jung Hyung-chul ),곽임종 ( Kwahk Im-jong ),윤영수 ( Yoon Young-soo ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.2
In this study, pull-out test carried out in order to investigate bond characteristics of Ultra-High Performance Concrete which is drawing attention as new materials. Variables are diameters and strength of steel rebar, length of bonding, and thickness of concrete cover. Through experiments, we can know high bond performance of Ultra-High Performance Concrete.
초고강도 콘크리트와 철근의 부착 특성에 대한 실험적 연구
국경훈(Kook, Kyung-Hun),이슬기(Lee, Seul-Kee),정형철(Jung, Hyung-Chul),곽임종(Kwahk, Im-Jong),윤영수(Yoon, Young-Soo) 한국구조물진단유지관리학회 2009 한국구조물진단학회 학술발표회논문집 Vol.2009 No.2
In this study, pull-out test carried out in order to investigate bond characteristics of Ultra-High Performance Concrete which is drawing attention as new materials. Variables are diameters and strength of steel rebar, length of bonding, and thickness of concrete cover. Through experiments, we can know high bond performance of Ultra-High Performance Concrete.
안와섬유모세포의 지방세포 분화에 대한 혼합 갱글리오사이드의 영향
최윤희,조은형,국경훈,Youn-Hee Choi,Eun Hyung Cho,Koung Hoon Kook 대한안과학회 2011 대한안과학회지 Vol.52 No.3
Purpose: To investigate the role of gangliosides in the differentiation of orbital fibroblasts into adipocytes, a component in the pathogenesis of Graves’ ophthalmopathy. Methods: Orbital tissues were obtained during orbital surgery for subjects without Graves’ ophthalmopathy or other inflammatory orbital disease, and orbital fibroblasts were primarily cultured from each obtained tissue. Morphological examination of orbital fibroblasts was performed after treatment with commercially available gangliosides mixture (Gmix) comprised of several subtypes. To determine the effect of Gmix on the differentiation of orbital fibroblasts into adipocytes and the differentiation-related genes, Oil Red-O staining and RT-PCR were performed. Results: The treatment with Gmix induced the morphological changes, which at least in part were explained with the differentiation of orbital fibroblasts into adipocytes in accordance with the increase of mRNA level of genes known to be related to adipogenesis, whereas dermal fibroblasts and preadipocytes were irresponsive to the same treatment. Conclusions: The results from the present study suggest gangliosides may have a role in pathologic mechanisms of Graves’ ophthalmopathy by the induction of differentiation of orbital fibroblasts into adipocytes. J Korean Ophthalmol Soc 2011;52(3):338-344