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전현우,문석환,조건현,왕영필,김용한,이현승 대한흉부외과학회 2007 Journal of Chest Surgery (J Chest Surg) Vol.40 No.11
유두상 섬유 탄력종은 심장에 발생하는 양성 종양으로 그 빈도는 매우 드물다. 21세 남자 환자가 운동 시 발생하는 호흡 곤란을 주소로 내원하였고 심초음파상 전측유두근에 위치한 포도알 크기의 심장 종양이 진단되었다. 전신 색전증이 우려되어 응급수술을 통하여 전유두근 및 승모판막에 부착된 종양을 절제하였으며 기계판막으로 승모판치환술을 시행하였다. 환자는 수술 후 항응고제 치료를 받으면서 특별한 문제 없이 퇴원하였다.
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조강 및 포조란시멘트 의결경화촉진이 콘크리트 강도에 미치는 영향에 관한 연구
전현우 한국농공학회 1972 한국농공학회논문집 Vol.14 No.3
시멘트의결경화촉진(疑結硬化促進)으로 콘크리트의 초기압축강도(初期壓縮强度)를 얻음으로서 한중(寒中)콘크리트 공사시(工事時) 동해(冬害)를 예방(豫防)하고 보다 안전(安全)하게 구조물(構造物)을 축조(築造)하는데 도움을 얻고자 일반(一般) 포트랜드시멘트(TYPE I) 조강(早强)시멘트(TYPE II) 및 포조란시멘트를 사용(使用)하여 본시험(本試驗)을 실시(實施)한 것이다. 이상(以上)의 결과(結果)를 요약(要約)하면 다음과 같다. 1. 보통(普通)포트랜드시멘트(TYPE I) 보다 조강(早强)시멘트(TYPE II)가 초기강도(初期强度)가 높았고, 2. 조강(早强)시멘트로 만든 콘크리트 초기강도(初期强度)의 증진(增進)으로 공기(工期)를 최대한(最大限)으로 단축(短縮)시킬수 있어 한중(寒中)콘크리트 공사시공(工事施工)에 적합(適合)하겠다. 3. 조강(早强) 및 포조란은 높은 분말도(粉末度)로 외기(外氣)에 대(對)한 풍화작용(風化作用)이 촉진(促進)될 우려(憂慮)가 있으므로 저장기간(貯藏期間)이 짧아야 하겠다. 4. 국내(國內)에서 생산(生産)되는 포조란시멘트가 조강현상(早强現象)을 나타냄으로 이에 대(對)한 시험(試驗)이 계속 필요(必要)하겠다. 이상(以上)의 결과(結果)는 공사현장(工事現場)에서 유효하게 적용(適用)될 것으로 믿는다. This study was carried out to search for an effect on strengths of a pozzolan and a high-early strength cements due to accelerating the initial setting and a rate of strength development at early age, and to obtain the effects applicable for structural construction works safety in the cold winter weather. The results of the study were as follows: 1. The early strength of high-early strength cement was higher than an ordinary portland cement(Type I). 2. High-early strength cement had a characteristic suitable for construction works in the cold weather due to the rate of acceleration of the eary strength. 3. When using pozzolan cements, a weight proportion should be considered in mix design since the pozzolan cement has a lower specific gravity than other portland cements. 4. It was desirable for the pozzolan cement to shorten the storage period since particles of the pozzolan cement was so fine that it was likely to weathering.
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BIM을 활용한 컬러모듈 BIPV 건축 설계 최적화 방안 연구 - 서울 지역 실증 일사량 데이터 중심으로 -
전현우,윤혜경,박서준 한국BIM학회 2019 KIBIM Magazine Vol.9 No.3
Currently, BIPV (Building Integrated Photovoltaic) design technology lacks analysis function at the planning stage, and there is a lack of understanding and reliability of BIPV design method and system for building designers. To design and consider various building integrated solar design alternatives, the color of building integrated solar is often monotonous or does not match the design direction of the building. In this study, architectural designers can select various color modules in the planning and design process of the building and analyze the characteristics of color module solar cells and compare and analyze the actual solar radiation and predicted solar radiation in Republic of Korea Seoul to reduce the confusion of design methods. By building a BIM design integrated system that can prove the quality of the building and analyze the shading analysis and power generation performance architecturally, it can improve the reliability of color module solar cell applicability that can express aesthetics in buildings and the predicted solar power generation capacity of each region. In the initial design stage, based on the empirical data of the BIPV system, it is possible to analyze the power generation performance for each installation angle and installation direction by analyzing the surrounding environment and the installation area, and accurately determine the appropriateness of the design accordingly.
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전현우 한국농공학회 1973 한국농공학회논문집 Vol.15 No.2
The aggregate materials being scottored in districts of the country were investigated to provide the data to the Consturction worker who are working without quality tests of construction materials in the small scale land consolidation, farm building construction and new village Construction projects in the country. Also results of the survey will be helpful to those who want to devise a succerrful plan in concrete execution by means of specifying a standard and technical treatment of construction materials.
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전현우 대한영상의학회 1983 대한영상의학회지 Vol.19 No.3
Endoscopic Retrograde Cholangiopancreatography(ERCP) is one of the important diagnostic methods for pancreatic cancer. It has an essential role in the early detection of pancreatic cancer. The ERCP findings of 35 cases of pathologically proven pancreatic cancer during the period of five and a half years from April 1977 through November 1982 at Kwangju Christian Hospital were studied. The results were as follows : 1. The ratio of male of female was 3.4 : 1, and most of the patients were over 40 years of age (88.5%). 2. The locations of the lesions were the head in 28 cases (80%), the body in 7 cases (20%), and the tail in 3 cases (8.6%). 3. The ERCP findings of pancreatic cancers were as follows ; 1) Encasement or obstruction of common bile duct, 18 cases (51.4%). 2) Obstruction of pancreatic duct, 16 cases (45.7%). 3) Irregular stenosis of pancreatic duct, 8 cases (22.3%). 4) Double duct sign, 7 cases (20%). 5) Diffuse narrowing of pancreatic duct, 2 cases (5.7%).
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全鉉禹,朴在允,李根培 朝鮮大學校 醫學硏究所 1982 The Medical Journal of Chosun University Vol.7 No.-
NAD^(+)-linked glutamate dehydrogenase(L-glutamate : NAD^(+) oxidoreductase, desminating, EC 1.4.1.3) of rabbit erythrocytes during cytosol differentiation has been studied. The rabbits were injected with phenylhtdrazine on day 0.1 and 3 at intervals, the blood samples were taken by cardiac puncture, and the activity of glutamate dehydrogenase in cytosolic and mitochondrial fraction of reticulocytes was assayed by the method of King. The results observed were as follows: 1. Activity of cytosolic glutamate dehydrogenase was about 4.0 unit from normal rabbit erythrocyte, however no appreciable enzyme activity was found in mitochomdrial fraction. 2. In phenylhydrazine-produced reticulocytosis, the total glutamate dehydrogenase activity was maximal on 5 day, about 34.5mits which is abouty 8.3 times higher than that of normal value. 3. The increase in total activity of glutamate dehydrogenase during the induction of reticulocytosis was primarily to 6.7 folds increase in the cytoselic isozyme(K_(s)=0.01161 ; K_(d)=0.0043 ; t1/2=161.16 hrs.), for mitochondrial isozyme(K_(s)=0.0675, K_(d)=0.090 ; t1/2=77.0 hrs). 4. The rate of constants follwing recovery from phenylhydrazine treatment were, Ks=0.0161, K_(d)=0.0320; 1/2=21.66 hrs, for cytosolic isozyme and K_(s)=0.0916 ; K_(d)=0.0229 ; t1/2=30.26 hrs, for mitochondrial isozyme.
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