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마골(馬骨) 추출물의 성장기 흰쥐 장골 길이 성장에 대한 효과
이세나 ( Se Na Lee ),최한 ( Han Choi ),손재봉 ( Jae Bong Son ),정재승 ( Jae Seung Jeong ),김윤정 ( Yun Jung Kim ),강대평 ( Dae Pyung Kang ),박수영 ( Soo Yeong Park ),강세찬 ( Se Chan Kang ),임강현 ( Kang Hyun Leem ) 대한본초학회 2009 大韓本草學會誌 Vol.24 No.3
Objectives: This study was designed to investigate the effects of horse bone powder extract on the growth of longitudinal bone in adolescent male rats. Methods: Longitudinal bone growth was measured by fluorescent microscopy. To examine the effects on the growth plate metabolism, the total height of growth plate, the induction of local insulin-like growth factor-1 (IGF-1), and bone morphogenetic protein-2 (BMP-2) were measured. Results: Horse bone powder extract enhanced longitudinal bone growth and total height of the growth plate. Also, it promoted the induction of local IGF-1 and BMP-2 of the growth plate. Conclusions: This study shows that the horse bone powder extract effects longitudinal bone growth in adolescent rats and might be used for both stunted adolescents and inherent growth failure patients.
강대철,전병희,이원평,성부용 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.5
The Tailor Welded Blanks(TWB) are using various materials (different thickness, strength and different materials) can be welded together prior to the forming process. Therefore, TWB applications have become little by little important in automobile industries, because it has more light weight and process reduction. A burnish area is very important for TWB using laser welding. In this paper, evaluated failure criterion, effect of clearance and distance of between pad and punch by computer simulation. We used element separation method for fracture. And applied a plastic strain to failure criterion. According to the analysis results, we obtain failure criterion, when plastic strain is 2.0. The burnish area and clearance were inverse proportional.