우편집중국 수변전 설비 수용률 산정을 위한 새로운 부하 계산법 개발

윤순만,정종찬,김광호 江原大學校 産業技術硏究所 2010 産業技術硏究 Vol.30 No.A

Recently, There have been many attempts to optimize energy usage in buildings and houses using Information Technology(IT) and the typical implementation can be found in Intelligent Building and Zero Energy Building. These kinds of buildings need to forecast the building loads, estimate the capacity requirement for power supply, and decide the capacity of the main transformer of the building. Currently, the capacity of the main transformer has been decided just using typical load estimation method not considering the load characteristics and patterns. In this paper, we propose a new load estimation method considering the load characteristics and patterns of the builiding. The proposed method was applied to actual mail center and verified the feasibility of application to actual design of buildings.

석유화학공장 근로자에서 발생한 재생불량성 빈혈 1례

박영만,임영,강성규,김지홍,이종욱,최용휴,김경아 大韓産業醫學會 1999 대한직업환경의학회지 Vol.11 No.2

Aplastic anemia is characterized by pancytopenia with hypocellular bone marrow. Fifty percent of the cases are idiopathic and the rest are caused by various agents including drugs, chemicals, radiation and viruses. It is difficult to link specific etiologic agents, especially chemicals to the development of aplastic anemia because multiple or unknown exposures may be involved in. Benzene, a common industrial chemical and a component of gasoline, may lead progressively to pancytopenia, aplastic anemia and leukemia when exposed. A petrochemical worker with aplastic anemia was referred to our hospital to evaluate a relationship between the job history and the disease. He worked in the petrochemical plant for 21 years and was exposed to low-level benzene. There was not anyother etiologic agent except benzene and this is the case report of aplastic anemia which possibly due to benzene exposure.

만성간염 및 간경변증에서 Malotilate^(�)의 임상효과

유종선,최성규,김세종,윤종만 최신의학사 1991 最新醫學 Vol.34 No.3

헤르만 브로흐의 소설「베르길의 죽음」연구 (Ⅰ) : 시간과 죽음의 상상력

崔鐘萬 慶尙大學校 1990 論文集 Vol.29 No.2

Hinter der individuellen Zeit Vergils erscheint transparent die Problematik oder Zeit des letzten vorchrislichen Jahrhunderts. Diese wiederum steht nach Brochs Auffassung zu unserer eigenen Epoche im Verhaltnis der Analogie. Das Gemeinsame der Zeit Vergils und unserer Gegenwart ist der Zustand der Wertzersplitterung. Daraus resultiert die Hoffnung des Menschen nach einen Mythos, der Zeit eine neue Grundlage, eine neue Wertwirklichkeit gibt. Vergil, der mit seiner Dichtung diese Wirklichkeit festhalten will, scheitert an dieser Erkenntnisaufgabe, weil er nicht die zeitlose ldee gestalten konnte, sondern nur das Sinnbild und Gleichnis erreicht, die aber unzulanglich bleiben, denn ein Gleichnis ist noch nicht die Erkenntnis selbst. Diese Erkenntnis ist auf das auβerste Ziel gerichtet, das sich der Mensch setzen kann : die Erkenntnis des Todes. Solange der Tod nur das Ende der Zeit ist, bleibt die Zeit das furchtbares Problem, das sich dem Menschen stellt, da er ihrem zwangslaufigen Ablauf nicht entfliehen kann. Die Aufgabe, das Wesen des Todes zu erkennen, kann so nur darin liegen, eine Moglichkeit zu finden, die dem Tod den Schrecken des Endes der Zeit nimmt. Die Lebenszeit ist nur sinnvoll, wenn sie als Zeitstrecke Ausschnitt aus einem ewigen Gesetz ist, das diese Zeit umgreift und den Menschen schon mittelbar in der Zeit as der Ewigkeit teilhaben laβt. Erweist sich der Tod als sinnvolles Geschehen etwa als Ubergang in diese Ewigkeit, empfangt damit auch das Leben und die Zeit, die dieses Leben erfullt, einen Sinn.

진폐진행정도에 따른 혈청내 구리와 아연 농도의 변동

박정래,박종욱,이수일,이철호,오차재,김창원,조병만,김돈균 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.3

목 적 : 진폐증은 분진으로 인해 인체의 면역기전이 작용하여 폐섬유화가 진행되는 질환으로, 인체의 면역기전에 작용하는 구리와 아연은 진폐증의 병리적인 진행과정인 폐섬유화에 관여한다. 본 연구의 목적은 초기진폐증 유소견자와 진행된 진폐증 환자의 혈청 구리와 아연의 농도를 정상인과 비교함으로써 체내 구리와 아연의 농도가 진폐증의 섬유화의 진행정도에 따라 변동함을 밝히고, 이를 이용하여 폐섬유화의 진행정도를 추정할 수 있는 지표를 제시하고자 한다. 방 법 : 진폐정밀기관에 내원한 초진내 원자 100명과 진폐요양기관에 입원한 진폐증 환자 100명을 선정한 후 흥부사진소견을 ILO 분류법의 진폐진행정도에 따라 각각 세 군(Stage Vl, V2, V3 & Stage Pl, P2, P3)으로 구분한 후 각 군의 혈청구리와 아연의 농도를 비교분석하였다. 대조군으로는 폐결핵, 심근경색, 뇌경색을 경험한 적이 없는 일반인 100명을 선정하였다. 결 과 : 초진내 원자군의 혈청 구리농도는 섬유화의 진행단계에 따른 유의한 차이를 보였으며, Stage V3에서 가장 높았다. 입원환자군에서는 혈청 구리농도가 대조군과 유의한 차이를 보이지 않는데 (p=0, 152), 이는 입원환자의 불량한 영양상태와 건강상태 때문인 것으로 추정된다. 초진내원자군과 입원환자군의 혈청 아연농도는 섬유화의 진행에 따라 통계적인 차이를 보였으며, Stage V2와 Stage P2, P3에서 각각 대조군에 비해 유의하게 낮았다. 혈청 아연과 구리농도의 비또한 양군에서 섬유화의 진행에 따라 의미있게 높았는데, 섬유화가 현저히 진행된 단계 (Stage V3, Stage P2, P3)에서 대조군과 의미있는 차이를 보였다. 결 론 : 초진내 원자와 입원환자의 혈청 Cu/zrl 비는 섬유화의 진행정도가 현저할수록 대조군에 비해 유의하게 높게 나타났다. 진폐증 환자들의 혈청 Cu/zn 비는 진폐증의 폐섬유화의 진행정도를 추정함에 있어 상당히 유용한 지표로 이용될 수 있으며, 폐섬유화의 진행과정에서의 혈청 구리와 아연의 작용기전을 이용한 치료방법의 마련에도 도움이 될 것으로 판단한다. Objectives : Copper and Zinc, the trace elements of a living body, take a part in immunologic mechanism and induce the pulmonary fibrosis which is the pathologic progress of pneumoconiosis. This study was performed to assist the identification of the pathologic process of pulmonary fibrosis in pneumoconiosis. Methods : The subjects of thls study was 200 diagnosed persons as pneumoconiosis, of whom 700 persons was the visitors in the outpatients departments of pneumoconiosis and 100 admissive pneumoconiosis patients. The serum copper and zinc are measured and compared. Results : The mean serum copper concentration of visitor group was significantly higher than that of control group, and that of stage V3 subgroup of visitor group was highest because of their advanced fibrosis. But, there was not the difference of serum copper concentration between patient and control group. We thought that the reason was poor nutritional and health status of the patient. The mean of serum zinc concentration of visitor and patient control was lower than that of control group. As the degree of pulmonary fibrosis was more severe from stage Vl, V2, V3 of visitor to stage Pl, P2, P3 of patient, the mean of serum zinc concentration was lower. The ratio of serum copper/zinc of visitor and patient was higher than that of control, and that of patient was higher than that of visitor. Those results showed that the ratio of serum copper/zlnc ratio more greatly expressed the degree of progression of pneumoconiosis than only copper or zinc concentration by adjustment of nutritional and health status of the patient. Conclusions : As above study results, the degree of pulmonary fibrosis of pneumoconiosis could be estimated by means of serum copper/zinc ratio.

자동차 동력조향용 유압호스의 압력맥동 감쇠특성

김도태,이종만 한국공작기계학회 1998 한국생산제조학회지 Vol.7 No.3

This paper presents experimental investigations on the attenuation characteristics of pressure ripple in automotive power steering hydraulic hoses. Also, a mathematical model of hydraulic hoses in proposed to support design of the power steering hydraulic circuit and analyze the attenuation characteristics of pressure ripples. The experimental results show that the pulsation attenuation characteristics of hydraulic hoses is remarkably affected by the flexible metal tube inserted coaxially inside a hydraulic hose with a finite length as well as viscoelastic properties of hose wall. It is also shown that the predicted results by the model proposed here agree well with the measured results over a wide range of frequency.

요중 N-acetyl-β-D-glucosaminidase 활성치를 이용한 신발제조업 근로자들의 만성 신기능 장애 평가

김돈균,이수일,조병만,이지호,이후락,박종욱 大韓産業醫學會 1993 대한직업환경의학회지 Vol.5 No.1

부산지역 신발제조업 근로자중 유기용제에 폭로되고 있는 150명을 폭로군으로 하고, 일반사무직 근로자 53명을 대조군으로 하여 인적특성, 직업에 대한 만족도, 자각증상, 작업과 관련된 스트레스의 정도를 조사하고, 유기용제 폭로량의 지표가 되는 요중 마뇨산 및 근로자 건강진단 항목인 혈중 요소질소, 혈청 크레아티닌 그리고 조기 신기능 장애의 지표로 알려진 요중 NAG 활성치를 측정하여 얻은 바를 아래와 같이 요약한다. 1. 요중 NAG 활성치는 폭로군에서 4.63U/g creatinine, 대조군에서 2.95U/g creatinine로 폭로군에서 높게 측정되었고(p<0.05), 유기용제 폭로에 의한 신기능 변화에 민감한 결과를 보였다. 2. 설문조사에서 직업에 대한 불만족, 이직을 원하는 경우, 건강에 대한 염려, 직업과 관련된 스트레스 및 유기용제 폭로와 관련된 증상호소가 대조군에 비해 폭로군에서 유의하게 증가되어 있어(p<0.05), 유기용제에 폭로되고 있는 신발제조업 근로자들의 보건관리는 산업보건학적 측면에서 매우 중요한 것으로 나타났다. 3. 폭로군중 근무기간 5년 이상인 대상자에서 요중 NAG 활성치는 5.92U/g creatinine, 근무기간 5년 미만인 경우 4.34U/g creatinine으로, 유기용제 폭로 기간이 길어짐에 따라 요중 NAG활성치는 통계학적으로 유의하게 증가되어 있었다(p<0.05). 4. 요중 NAG활성치는 근무기간을 가중한 톨루엔 총 폭로량과 유의한 정의 상관관계를 보여(p<0.05), 용량-반응관계를 보여 주었다. 이상의 결과에서, 복합유기용제에 만성적으로 폭로되는 근로자들에 공통적으로 발생할 수 있는 조기 신기능 장애를 감시하기 위하여, 요중 NAG활성치를 측정한 자료를 이용하면 유기용제 폭로 근로자들의 보건관리를 위하여 자료를 제공할 수 있을 것으로 생각된다. Personal characteristics, degree of satisfaction for work, subjective symptoms, and stress related to working condition were investigated from 150 workers exposed to organic solvents in shoe factories and 53 official workers in Pusan area, and urinary hippuric acid concentration which represented the amount of exposed organic solvents, BUN and serum creatinine which were renal function tests for worker's health examination and urinary N-acetyl-β-D-glucosaminidase activity were measured. The results obtained were summarized as follows. 1. The mean value of urinary NAG activity of exposed group was higher than that of control group(p<0.01), and subjects whose NAG activities were over refrence range in exposed group were far more than in control group(p<0.05), therefore urinary NAG activity was a sensitive test for the change of renal function due to exposure of organic solvents. 2. Unsatisfaction for occupation, want to change occupation, worry about health, stress related to job and symptoms related to exposure of organic solvents investigated by questionnaire were higher in exposed group than in control group, therefore the health management for workers exposed to organic solvents in shoe factories was important in the viewpoint of occupational medicine. 3. The mean value of urinary NAG activity in the subjects whose working duration were over 5 years was higher than in the subjects whose working duration were over 5 years was higher than in the subjects whose working duration were under 5 years, therefore the longer exposured duration was, the higher urinary NAG activity was. 4. Urinary NAG activity had positive correlation with time weighted amount of total toluene exposure therefore dose-response relationship was suspected. As above results, it will be very useful to apply the data of urinary NAG activity to the health management of workers exposed to orgaic solvents in order to monitoring of early renal dysfunction which was common in the workers chornically exposed to mixed organic solvents.

무선통신을 위한 STBC-FMT와 STBC-OFDM 시스템의 성능 비교

김종만(Jong-Mann Kim),권의근(Ui-Kun Kwon),박철진(Cheol-Jin Park),임기홍(Gi-Hong Im) 한국통신학회 2004 한국통신학회 학술대회 및 강연회 Vol.2004 No.4

결핵성 임파선염을 동반하고 상하부 장관을 광범위하게 침범한 장결핵 1예

김종순,최성규,김현수,김세종,유종선,서강석,안현택,윤종만,구철,오원태 대한소화기내시경학회 1998 Clinical Endoscopy Vol.18 No.3

The prevalence of intestinal tuberculosis has been markedly decreased with the development of anti-tuberculous chemotherapy, preventive medicine, vaccinations, early detection and treatment of pulmonary tuberculosis, and improved eeonomic conditions. Nowadays, intestinal tuberculosis is a disease that should be differentiated from the inflammatory bowel diseases such as Crohn's disease and ulcerative colitis, Behcet's disease, and colon cancer and amebic colitis. This disease also has a new clinical significance in that it has an increased infection rate and unfavorable outcomes in patients infected by HIV or in those who undergo organ transplantation or receive immunosuppressive agents. Tuberculosis of the duodenum was a rare disease and was not reported in the last decade. Moreover Intestinal tuberculosis extensively involving the small bowel including the duodenum and colon was very rarely reported in the various relateid literature. Recently we experienced a case of advanced intestinal tuberculosis involving the duodenum, jejunum, ileum, and colon accompanied by tuberculous cervical and abdominal lymphadenopathies, in a 49-year-old woman who manifested profound general weakness, diarrhea, and marked weight loss. She was diagnosed pathologically by upper gastrointestinal endoscopy, colonoscopy, and fine needle aspiration cytology as well as by roentgenologic examination. The patient was given antituberculous medication which resulted in dramatic clinical improvement. In this report, we present this case with review of the related literature.

천연가스 폐압발전의 경제적 타당성에 대한 열역학적 분석

하종만(Jong Mann Ha),홍성호(Seongho Hong),김경천(Kyung Chun Kim) 한국가스학회 2012 한국가스학회 학술대회논문집 Vol.2012 No.11