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Laser sheet 광을 이용한 디젤분무의 성장에 관한 연구
서경일(K.I.Se),천무권(M.K.Chun),차건종(K.J.Cha),김덕줄(D.J.Kim) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
Diesel engine plays an important role in heavy industry and transportation owing to its high thermal efficiency compared with others. But, because these engines are producing pollution substances such as Soo, NOx, etc., air pollution is especially serious in industrial area and urban area. So recent major research and development studies in diesel engines are changing toward point to purify the polluted environment In diesel engines, the geometric structure of nozzle and the microscopic and macroscopic mixing processes between the injected fuel and the ambient gas have a great influence on the formation of Soot and NOx emissions. In this study, the inner microscopic structure and growth process of a non-evaporating diesel spray at different injection pressures and ambient pressures were investigated using laser sheet beam. These results were compared with those of impinged spray that is briskly studied now as a manner to decrease the exhaust emissions under the same conditions.
Graves씨 병, 특발성 혈소판 감소성 자반증을 동반한 전신성 홍반성 낭창 1예
최현,박강서,김영철,한재룡,천경일,조인성,홍숙경 대한내분비학회 1997 Endocrinology and metabolism Vol.12 No.4
Autoimmune diseases are occasionally associated with other autoimmune diseases in the same patients. Autoimmune Graves' disease has been associated with systemic rheumatic diseases including systemic lupus erythematosus(SLE). And Graves' disease associated with idiopathic thrornbocytopenic purpura(ITP) has been reported many times in Korea. There is a special relationship between SLE and ITP, both of which are autoimmune diseases. Some patients with thrombocytopenic purpura, labeled as idiopathic at the onset, later develop a classical course of SLE, suggesting that ITP may be an early manifestation of SLE. The relationships among these three conditions and their pathogenesis are poorly undemtood, and the coexistence of these diseases at the same time has been reported very rarely, but it may be very probable that there are some relationships among them. We report a case of SLE associated with Graves' disease and ITP treated well by imunosup- pressive agent who had been suffering from recurrence by conventional treatments(antithyroid medication, corticosteroid, subtotal thyroidectomy and splenectomy). (J Korean Soc Endocrinol 12:677-683, 1997)
내시경적 경화요법에 의한 십이지장 정맥류출혈의 치유 1예
김영철,박성규,이승철,최덕례,최현,나문준,한재룡,천경일,홍숙경,조경근 대한소화기내시경학회 1998 Clinical Endoscopy Vol.18 No.2
Bleeding frorn the duodenal varix is an unusual event. Upper gastrointestinal endoscopy is the diagnostic procedure of choice in diagnosing duodenal varices. If performed during active bleeding, it can differentiate between esophageal and duodenal varices as the source, which has important therapeutic implications. A thorough examination of the duodenum for varices is important in an upper gastrointestinal hemorrhage. Treatment modalites for bleeding duodenal varices are sclerotherapy, varix suture ligation, portocaval shunt, and duodenal resection. Although endoscopic sclerotherapy has lirnited success in controlling active duodenal varix as initial treatment, endoscopic injection sclerotherapy is a useful first-line therapeutic measure in the treatment of bleeding duodenal varices. In this study we present a case of a ruptured duodenal varix, which was defected by an endoscopy, in a 61-year-old male. An endoscopic examination showed small and nonbleeding esophageal varices and a prominant ulcerated varix was identified in the 2nd portion of the duodenum. Endoscopic sclerotherapy was performed by injecting ethanolamine oleate into the varix. Our report demonstrate that endoscopic sclerotherapy can be efficient even in the presence of acute bleeding and that it can provide a definitive method of curing of a bleeding duodenal varix.