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한경천,노형래,이한동,이유상,Chon, Han-Kyong,Roh, Hyong-Rae,Lee, Han-Dong,Lee, Yu-Sang The Korean Society for Microsurgery 2012 Archives of reconstructive microsurgery Vol.21 No.1
Purpose: We reviewed 66 cases of the glomus tumors in the hands. The purpose of this study was to review the characteristic signs and symptoms of glomus tumors and the surgical outcomes. We made hypothesis that (1) our guideline for surgical excision are reliable and (2) our surgical technique is efficient and less harmful to the nail root. Materials and Methods: The clinical diagnosis was made with occasional radiological studies and surgical excision was performed according to our indications. Patients with electrical shock-like pain by touching (the essential symptom) and at least 2 of 4 clinical signs and symptoms (cold hypersensitivity, paroxysmal pain that radiated proximally, blue discoloration, nail deformity for dorsal tumor or a palpable nodule for pulp tumor) underwent surgical excision. Results: The duration of symptoms of the patients was about 5.3 years. No difference of prevalence was found in both hands, but the thumb and the middle finger were more affected than the other fingers. The mean follow up period was 2.4 years and none of the patients complained the same characteristic pain at the last visit. Conclusion: To the best of our knowledge, this report is the largest case series about glomus tumors in the finger tip. The clinical signs and symptoms are important to make a diagnosis of glomus tumors, and surgical excision is the treatment of choice.
유한요소법을 이용한 Sputtering Coating 장치용 진공용기의 응력해석
이동명,오택열,한경천 경희대학교 산학협력기술연구원 1995 산학협력기술연구논문집 Vol.1 No.-
In this study, stress analysis of the vacuum chamber of sputtering coating equipment was performed and its safely was confirmed. In order to enhance the self-analysis ability of the manufacturer, computer program was developed using finite element technique. Since door and chamber flanges are known to be the weakest parts of the vacuum chamber, the flanges were meshed as bilinear rectangle elements and analyzed. The results are confirmed by commercial software, NASTRAN. The calculated stresses are low enough to modify the chamber structure. This study is expected to be the motivation and the foundations of computer analysis and design technique of the manufacturer.
김기평(Ki-pyoung Kim),강호근(Ho-keun Kang),장재식,천강우,배한경(Han-kyung Bae) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10
선박의 설계와 운영을 개선하여 에너지 효율을 증대하고, 온실가스 배출을 감소시키기 위한 광범위한 기술들이 IMO에서 검토되고 있다. 특히 MEPC는 57, 58, 59, 60차 회의를 통하여 선박 온실가스 저감을 위한 논의를 진행하고 있으며, ‘10년 10월 개최 예정인 MEPC 61차 회의에서 MARPOL 부속서 6을 수정하여 온실가스 저감을 위한 강제조항으로 도입하려는 노력을 추진 중이다. 본 연구에서는 현재 운항하고 있는 선박을 대상으로 적용 가능한 GHG 저감을 위한 운항효율화 기술을 분류하고, 각 세부기술에 대한 기술조사의 내용을 보고한다.