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김성규(Sung-Gue Kim),황태규(Tae-Gyu Hwang),박재현(Jae-Hyoun Park),김동균(Dong-Kyoon Kim),권혁상(Hyuk-Sang Kwon) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
Valves has been used widely in various industries. Especially, a ball valve is on of the flow device most frequently employed in a pipeline system. There are many purposes for valve usage in a piping system. one of them is to control the flow rate. For a design of ball valves, it is important to know the characteristics of flows inside a ball valve. In this study, the computation fluid dynamics were conducted to observe flow velocity, flow coefficient and pressure distribution using CFX 11 according to the valve angles and uniform incoming velocity.
MR Spectroscopy로 진단한 Leigh 병 1례
황성욱,황태규,김용우 인제대학교 2006 仁濟醫學 Vol.27 No.-
Leigh syndrome is a progressive and degenerating central nerve system disease with symmetrically localized necrotic changes on the both gray and white matter, called subacute necrotizing encephalopathy. The causes of this disease have been revealed that defect of various enzymes (pyruvate dehydrogenase, repiratory complex Ⅰ, Ⅳ, Ⅴ, etc.)related to mitrochondrial carbonate metabolism and energy generating mechanisms. The clinical course is variable, and symptoms such as non-specific- seizure, respiratory failure, nystagmus, decreased muscle tone, developmental delay, vomiting and lethargy etc. appeared. And the diagnostic tool is not clear, so the diagnosis is difficult. Brain MRI and MR spectroscopy have been used to diagnose Leigh syndrome. We experienced 1 case of Leigh syndrome with typical MR, MR spectroscopic findings. MRI shows the lesions on midbrain, both basal ganglia, caudate nucleus, putamen, periaqueductal area, and periventricular white matter. MR spectroscopic findings showing high lactate peak were appropriate to Leigh disease. The patient is a 16-month-old girl with generalized weakness, and died within 1 month after first admission on our hospital. We report this case with typical MR spectroscopic findings.
김노현,박상조,황태규,이순용 인제대학교 1993 仁濟醫學 Vol.14 No.2
Holoprosencephaly는 대뇌 반구 발달의 실패와 중앙선상의 안면기형을 나타내는 드문 선천성 질환이다. 저자들은 출생시 토순 및 비정상적인 안면소견을 보여 시행한 전산화 단층촬영에서 Alobal type으로 확진된 환아를 경험하였기에 보고하고자 한다. Holoprosencephaly is the result of an embryogenic defect of prechodal mesoderm which leads to incomplete morphogenesis of the fore brain and variable deficit of facial midline anomalies. A case of holoprosencephaly, alobal type with premaxillary agenesis in 1-day-female patient was presented. She had hypotelorism, cleft upper lip, and flat nasal bridge. Diagnosis of holoprosencephaly is confirmed by clinical features and CT-scan. A brief review of literatures was made.