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이승구,김정만,김형민,강용구,김용식,권순용,이경태,김인,Rhee, S.K.,Kim, J.M.,Kim, H.M.,Kang, Y.K.,Kim, Y.S.,Kwon, S.Y.,Lee, K.T.,Kim, I. 대한근골격종양학회 1995 대한골관절종양학회지 Vol.1 No.2
A desmoid tumor is a locally aggressive growth of connective tissue origin which infiltrates the surrounding tissue and has a marked tendency for recurrence. And so it was also called as an aggressive fibromatosis, musculofascial fibromatosis or fibrosarcoma etc. Thirteen cases of desmoid tumor was treated since 1980, and their retrospective study was done with 79 months of follow-up after initial surgical excision. The female was involved in 12 cases(one male) with the age ranged from 7-50 years, average 28 years, and seven patients in third decade. A slowly growing mass was excised on average 4 months after first notice of the mass, but their margins are not demarcated clearly in most cases. Wide excision in 12 cases was done, but wide excision and saphenous vein graft was performed in one case because of invasion of posterior tibial artery by tumor mass. The tumor was found on extraabdominal region in 8 cases(61.5%) but 5 cases in abdominal wall(38.5%). The recurrence rate was high(6/13, 46.2%), and 11 times in 6 patients were recurred(average 1.8 times), within 27 months of initial excision. Six cases of recurrence were treated with wide excision again in 3 cases, wide excision combined with radiotherapy(4,000-6,000cGy) in 4 cases and wide excision with chemotherapy in one case. During the follow-up for average 21 months after treatment, no recurrences are found. Tumor remission periods without recurrence are average 67 months in all, and 11 years in longest case. Histologically it was very mimic with fibrosarcoma but could be differentiated with Trichrome stain, and their findings are not changed after recurrence.
조동혁(Cho, D.H.),황상연(Hwang, S.Y.),조성호(Cho, S.H.),이인우(Lee, I.W.),이승구(Lee, S.K.) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.11
This paper presents a design approach for wind power generator. Among several different generator systems, doubly-fed induction generator(DFIG) is selected for Hyosung 2MW wind turbine system from the view of cost and weight. The time step finite element method is applied to analyze the performance of DFIG, and design of experiment(DOE) is used as an optimization method.