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- 저자 : 김진봉(J. Kim) (검색결과 32 건)
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액상성형법에 의해 제조된 고성능 BMI기지 복합재의 구조물성
김진봉(J.B. Kim),김영규(Y.G. Kim),엄문광(M.K. UM),변준형(J.H. Byun) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
This paper is focused on the investigation of the mechanical property of the carbon fabric/BMI composite laminate. The carbon fabric/BMI composite laminate can be one of light-weight structural materials in aerospace engineering for high temperature application over 170℃. The composites laminate plates were made through RTM process. To check the validity of the composite material for the application, the mechanical characteristics of composite specimens from as-received and environmentally conditioned plates were investigated. The mechanical tests were performed according to the MIL-HDBK-17 and ASTM standards
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김수호 ( Kim Su Ho ),김종혁 ( Kim Jong Hyeog ),백광호 ( Baeg Gwang Ho ),백일현 ( Baeg Il Hyeon ),한태호 ( Han Tae Ho ),오순옥 ( O Sun Og ),김진봉 ( Kim Jin Bong ),박상훈 ( Park Sang Hun ),장웅기 ( Jang Ung Gi ),김동준 ( Kim Dong J 대한소화기학회 2004 대한소화기학회지 Vol.43 No.1
GIST is a rare neoplasm, the majority of GISTs are located in the stomach and small intestine. Most GISTs are diagnosed histopathologically after resection because of submucosal location. A 37-year-old female patient presented with a 2-weeks history of generalized weakness, nausea accompanied by intermittent passage of black, tarry stools. Esophagogastroduodenoscopy and ERCP showed a large round mass measuring 5 cm in diameter in the ampulla of Vater with ulcer crack. Endoscopic multiple biopsies from the mass including ulcer base were taken. Light microscopic findings showed spindle-shaped and epitheloid tumor cells having high cellularity and frequent mitotic figures. On immunohistochemical stainings, the tumor cells were positive for CD34 and smooth muscle actin. Based on these preoperative findings, a diagnosis of malignant GIST of the ampulla of Vater was made probably. After operation, immunohistochemical studies revealed positive reaction for c-kit and vimentin, as well as focally reactive for CD34 and smooth muscle actin. We report a case of GIST in the ampulla of Vater presenting with melena that was diagnosed preoperatively and postoperatively. (Korean J Gastroenterol 2004;43:66-70)
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