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정권수,조정구 順天大學校 師範大學 附屬 科學敎育硏究所 1994 科學과 敎育 Vol.2 No.-
본 논문에서는 PM 공간 상에서 양립사상의 성질을 이용하여 세 개의 사상들의 공통 부동점 정리를 증명하였다. 이 결과는 Singh와 Pant[5]의 결과를 일반화한 것이다.
정권수,조정구 順天大學校 師範大學 附屬 科學敎育硏究所 1994 科學과 敎育 Vol.2 No.-
PM 공간에서 타입 (A)의 양립 사상의 성질을 이용하여 Fisher의 일반화된 축소 사상의 조건을 만족하는 사상들의 공통 부동점 정리를 증명하였다.
Bon-Gwon Koo,Dong-Hee Lee,Won-Sub Kim,Jin-Hwan Yoon 한국생활환경학회 2018 한국생활환경학회지 Vol.25 No.1
In the present study, we investigated the effects of 12 weeks resistance exercise on muscle strength, breaking force and serum ALP level in orchiectomized(OCX) rats. Thirty male Sprague–Dawley rats(30 weeks) were used as subjects. The subjects were divided into three groups; control group(CG, n=10), OCX control rats group(OCXC, n=10) and OCXC rats+resistance exercise group(OCXC+RE, n=10). Progressive resistance training using a ladder and tail weights was performed for 12 weeks (3 days/week). After the experiment for 12 weeks, grip strength was significantly higher in OCXC+RE group than OCXC group(p<0.05). Femur breaking force was significantly higher in OCXC+RE group than OCXC group(p<0.05). Serum ALP level was significantly increased in OCXC+RE group compared with OCXC group(p<0.05). In conclusion, theses results suggest that regular resistance exercise training can improve muscle strength, breaking force and markers of bone formation in orchiectomized rats.
大區劃化 耕地整理에 있어서 用ㆍ排水管理上 制限要素의 檢討
具滋雄,孫在權,崔珍奎 전북대학교 농업과학기술연구소 1995 農大論文集 Vol.26 No.1
This study was performed in order to investigate various restrictions on water management practices in the large scale farm land consolidation project for promoting farming of efficiency. To accomplish this object, 26 farm households and 50 farming companies were chosen as subjects of field survey, and surface drainage experiments of paddy field were carried out in 2 experimental plots. In this study, many factors influencing determination of the size of a reasonable standard plot, were studied and analyzed in the side of water management practices to produce basic data for the large scale farm land consolidation project to promote the productivity of labor and land.
Gwon, Yong Hwan,Ha, Jong Keun,Cho, Kwon Koo,Kim, Hye Sung Springer 2012 Nanoscale research letters Vol.7 No.1
<P>Multi-walled carbon nanotubes were synthesized on a Ni/Au/Ti substrate using a thermal chemical vapor deposition process. A Ni layer was used as a catalyst, and an Au layer was applied as a barrier in order to prevent diffusion between Ni and Ti within the substrate during the growth of carbon nanotubes. The results showed that vertically aligned multi-walled carbon nanotubes could be uniformly grown on the Ti substrate (i.e., metal substrate), thus indicating that the Au buffer layer effectively prevented interdiffusion of the catalyst and metal substrate. Synthesized carbon nanotubes on the Ti substrate have the diameter of about 80 to 120 nm and the length of about 5 to 10 μm. The Ti substrate, with carbon nanotubes, was prepared as an electrode for a lithium rechargeable battery, and its electrochemical properties were investigated. In a Li/CNT cell with carbon nanotubes on a 60-nm Au buffer layer, the first discharge capacity and discharge capacity after the 50th cycle were 210 and 80 μAh/cm<SUP>2</SUP>, respectively.</P>