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복재 신경의 혈관망을 이용한 원위도상 도서형 신경피부 피판술
김상수,김동철,김용범,Kim, Sang-Soo,Kim, Dong-Churl,Kim, Yong-Bum 대한미세수술학회 2001 Archives of reconstructive microsurgery Vol.10 No.1
Introduction : The goal in the management of soft tissue injuries of the lower extremity is to obtain a closed stable wound as soon as possible. Recently, An anatomic study that has shown the role of the vascular axis that follows the superficial sensory nerves in supplying the skin developed the concept of a neuroskin island flap. It has been suggested that skin island flaps supplied by the vascular network of the saphenous nerve is one of the most reliable treatment to skin defect below the knee joint. Purpose : The aim of this article is to present a clinical experience of neuroskin island flaps based on the saphenous nerve and to estimate the clinical utilities of distally based saphenous neuroskin flap. Materials and Methods : From September 1995 to May 2000, a total 12 distally based neuroskin island flaps supplied by the vascular axis of the saphenous nerve were performed to cover defects in pretibial area below the knee. Result : flap necrosis due to reactivation of existing infection developed in a case that skin defect had been on infected nonunion site of tibia. But other 11 cases survived completely without any specific complications. Conclusion : The distally based neuroskin pedicled island flap using the vascular network of the saphenous nerve are versatile and reliable and especially indicated for limited defects in pretibial area below the knee joint which are not good indications for other better-known flaps.
김상수,구재관,이영호,김병걸,Kim, Shang-Shu,Ku, Jae-Kwan,Lee, Young-Ho,Kim, Byung-Geol 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.5
The new recycling technology for aged Aluminum wires in overhead conductor have been carried out. We are attempting to develop remanufacturing method for them for more effective way of recycling in stead of its conventional remelting process. The weld of aged aluminum wires play a vital role in remanufacture process. The paper investigates the mechanical properties during cold welding process of aged Aluminum wire. The tensile tests and microscopic analysis results are discussed to underscore the hardening features of welded aluminum wire. Various graphs are presented accompanied by discussion about their relevance on the process.
Super-PVA LCD Technology for Wide Viewing Angle Performance
김상수,박진혁,김태성,Kim, Sang-Su,Park, Jin-Hyeok,Kim, Tae-Seong 한국정보디스플레이학회 2005 인포메이션 디스플레이 Vol.6 No.4
평판 디스플레이 장치가 LCD-TV에 사용되는 경우 시야각 특성과 동화상 성능은 보다 중요한 성능이 된다. 전반적인 LCD의 화질 특성은 시야각 특성과 동화상 응답 속도를 제외한 모든 부문에서 경쟁 기술보다 우세하다. 이러한 디스플레이의 시야각 특성을 개선하기 위해 LCD업계에서는 IPS, MVA, PVA 등 시야각 특성이 개선된 광시야각 액정 Mode를 개발하여 사용하고 있지만 여전히 LCD는 자발광 디스플레이에 비하여 측면 시인성 측면으로 열세에 있었다. 최근에는 LCD의 측면 시인성을 획기적으로 개선 할 수 있는 기술이 개발되어 더 이상 LCD-TV 응용에서 문제가 되지 않을 수준이 되고 있다. 본 논문에서는 여러가지 광시야각 액정모드 LCD의 측면 시인성 향상 기술에 대한 개략적인 사항을 알아보고, 그 중 Super PVA 액정 기술의 기본원리와 동작 방법에 대하여 상세히 기술하기로 한다.
김상수,구재관,이영호,김병걸,Kim, Shang-Shu,Ku, Jae-Kwan,Lee, Young-Ho,Kim, Byung-Geol 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.6
The new recycling technology for aged aluminum wires in overhead conductor have been carried out. We are attempting to develop remanufacturing method for them for more effective way of recycling in stead of its conventional remelting process. The drawing process of aged aluminum wires play a role in remanufacture process. Drawing process was performed under lubricant. The speed of drawing was between 500 m/min and 1,000 m/min. These machines have 11 or 12 dies house for breakdown of the feedstock. Material of the die is tungsten carbide and they have generally 25% reduction ratio. The paper investigates the mechanical properties during drawing process of aged aluminum wire. The results of tensile tests and microscopic analysis were discussed to underscore the hardening features of drawing aluminum wire. Various graphs are presented accompanied by discussion about their relevance on the process.