단무지 공장에서 발생한 질식 사고의 원인과 방사선학적 소견: 중례보고 및 가스분석 결과

박충기,김만구,김흥철,안범규,박만수,황우철,최철순,강익원 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-

목 적:단무지 공장에서 질식사고를 일으켰던 가스의 종류를 알아내고, 이러한 가스중독의 방서선학적 소견을 소개하기 위하여 본 연구를 하였다. 대상 및 방법:단무지 공장에서 발생한 질식 사고자 3예중 생존자 1예를 대상으로 단순흥부X-선검사와 CT 소견을 분석하였으며, 가스의 종류를 알아내기 위하여 단무지를 유리병에 넣어 발생된 가스를 가스크로마토그래픽을 이용하여 분석하였다. 결 과:단무지 공장에서 발생한 질식사고자중 생존한 1명의 방사선학적 검사에서 신속히 호전되는 폐경결(consolidation)을 볼 수 있었으며 이는 폐부종의 소견임을 알 수 있었다. 협기성 상태에서 단무지를 담은 유리병의 상층부 가스를 실험 분석한 결과 이산화탄소, 에칠알코올이 다량으로 검출되었으나 독성가스는 주로 황화수소이였다. 결 론:단무지 공장의 질식 사고자에서 폐방사선학적 소견은 폐경결을 보이는 폐부증으로서 이는 실험을 통해 단무지에서 발생되는 유독가스인 황화수소 때문임을 입증하였다. Purpose: To identify the main toxic gas released from salted radish in rice bran(Dan-M-Ji) and to introduce the radiological findings of the patient who was exposed to the gas. Materials and Methods: Chest radiographs and CT scans of one survivor among three men who were exposed to the gas from Dan-Mu-Ji were reviewed. Gas obtained from the closed bottle containing Dan-Mu-Ji was analized by using the gas chromatography. Results: The radiographlc examinations of the survivor were suggestive of pulmonary edema with it's rapidly improving consolidations in both lung. The headapace gas within the bottle containing Dan-Mu-Ji was mainly composed with carbon dioxide, ethyl alcohol and hydrogen sulfide, of which hydrogen sulfide was considered the main toxic gas released. Conclusion: Under the anaerobic condition, Dan-Mu-Ji released toxic hydrogen sulfide. Inhalation of hydrogen sulfide might produce non-cardiogenic pulmonary edema.

동종 골수이식 후 만성 이식편대숙주질환과 동반되어 신증후군으로 발현된 IgA 신병증 1예

정철권,김현수,박준성,정성현,조도연,최진혁,남동기,임호영,김명성,신규태,임현이,김효철 대한조혈모세포이식학회 1999 대한조혈모세포이식학회지 Vol.4 No.2

동종 골수이식 후 발생하는 신기능부전은 원인이 다양하여 감별에 어려움이 있다. 만성 GVHD는 흉선의 기능저하에 따른 면역관용의 실패로 발생되는 자가면역현상에 의해 발생되는 것으로 알려져 있으며 드물게 신장을 침범하여 신증후군을 일으키기도 한다. CaA의 용량을 줄이거나 투약중지 후 발생한 만성 GVHD에 동반된 신증후군의 경우 조기에 신조직검사를 시행하여 감별진단하고 CsA의 용량을 증량하거나 재투약하여 좋은 치료 결과를 보일 것으로 기대된다. 저자들은 문헌고찰을 통해 동종 골수이식 후 발생된 신증후군이 유사한 임상양상을 보이며 발생기전에 만성 GVHD와 자가면역현상이 연관되어 있음을 확인하였으며 동종 골수이식 후 신증후군의 임상양상을 보이는 환자에서 병리조직학적으로 lgA 신병증을 진단하고 이러한 lgA 신병증이 발생기전에 만성 GVHD와 자가 면역현상이 연관되어 있을 가능성을 최초로 확인하였으며 CsA를 이용하여 성공적으로 치료한 경험을 하였기에 보고하는 바이다. Renal insufficiency is occasionally encountered in allogeneic bone marrow transplantation and its cause is difficult to ascertain. Chronic graft-versus-host disease (GVHD) related to thymic dysfunction is immune-mediated and involves autoreactivity of T-lymphocytes derived from donor marrow to recipient's major histocompatibility complex(MHC) minor antigens. The clinical mainifestations of chronic GVHD are similar to those of autoimmune disease but kidney involvement is rare. Few cases of nephrotic syndrome with membranous nephropathy or minimal change nephrotic syndrome have been reported to be associated with chronic GVHD in allogeneic bone marrow transplant recipient especially after cyclosporine A(CsA) withdrawal, and these cases have responded well to CsA. Therefore, it is prudent to differentiate the cause of post-transplant renal insufficiency using renal biopsy and to start CsA in a case of nephrotic syndrome associated with chronic GVHD as early as possible. We report a case who had a massive proteinuria during the post-allogeneic marrow transplantation period. The cause of nephrotic syndrome was diagnosed as IgA nephropathy by renal biopsy. The patient was successfully treated with reintroduction of CsA.

태권도선수의 호흡순환능력에 관한 연구

박철호,김영준,김우규,박태열,홍명엽 東亞大學校附設스포츠科學硏究所 1999 스포츠科學硏究論文集 Vol.17 No.-

The purpose of this study was to evaluate the anaerobic thresold and EPOC(Excess post-exercise Oxygen Consumption) in treadmill exercise of taekwondo players(n=7),and group of controls college students(n=7). The started treadmill exercise with speed of 120m/min and within treadmill 5% slope. Especially the treadmill speed was increased with 20m/min per two minutes and subjects were finally led to exhaustion. The results obtained from this test were as follows: 1. The VO₂max( /min), VO₂ max(kg) showed significantly higher differences taekwondo group than control group in maximum exercise. 2. The ventilation volume showed significant difference taekwondo group than control group in maximum exercise. 3. The anaerobic threshold showed significant difference taekwondo group than control group in maximum exercise. 4. The EPOC showed significant difference taekwondo group than control group in maximum exercise.

수직형 머시닝센타 이송시 스틱-슬립에 관한 연구

최경현,조규재,박종남,이승철 朝鮮大學校 機械技術硏究所 2004 機械技術硏究 Vol.7 No.2

볼나사 미끄럼 시스템에서 고속과 고정밀도를 이루는데 중대한 문제들은 마찰과 각 구성 요소들 사이에서의 마찰과 축 방향의 강성이 감소하여 나타난다 특히, 안내면에서의 마찰은 이송정밀도를 떨어뜨리는 좋지 않은 영향을 준다. 더욱이 스틱-슬립현상과 같은 특수한 마찰 형태는 미끄럼 시스템의 저 강성에서 일어난다. 스틱-슬립은 정밀도에 나쁜 영향을 가진다. 본 논문에서는 미끄럼 시스템의 정밀도에 있어서 스틱-슬립 마찰에 의한 운동오차에 따른 변화들을 고찰하여 이송정밀도의 해결 방안을 제시하려 하였다. In the ball screw slide system the major problems in accomplishing the high-speed and high-precision are the friction between elements and the decrease of axial stiffness. Especially the friction on the guide have a bad effect on the precision of sliding. Furthermore stick-slip occur when the low stiffness of slide system. The stick-slip have a bad influence on the precision. In this research, the affection of stick-slip friction to the precision of the slide system is studied and the possible solution of the precision is proposed.

요통에 對한 자석요대(마그네밴드)의 治療效果

林準圭,李哲浣 大田大學校 1984 論文集 Vol.3 No.1

산소의 첨가가 박막 백금측온저항체의 온도저항계수에 미치는 영향

설철규,김영진,장경훈,이건환,이정희 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1

A thin film Pt-RTD(resistance temperature device) was fabricated by using DC magnetron sputtering and laser patterning. A study was fulfilled to adjust the TCR(temperature coefficient of resistance) to 3850 ppm/℃ which is IEC751 standard and the influence of oxygen addition(0 ~ 20 %) on TCR was measured. The resistance of Pt-RTD was set to 1000 Q at 0 ℃ using laser patterning and trimming. The analyses of XRD and AES were used to characterise the platinum thin film. The TCR of Pt-RTD was measured by a high precision oil bath. When the addition of oxygen flow rate was 1 %, TCR was 3850 ppm/℃.

상부 조기 위암 환자의 복강경하 상부 위절제술 3례 경험

조규석,김형철,박경규,이문수,송옥평,임철완,신웅진,주종우,유기원 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Background : The reported incidence of early gastric cancer located in the upper portion of the stomach has been increasing with the recent advances in its diagnosis and screening. Recently, we have successfully performed laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without pyloroplasty on three patients with early gastric carcinoma localized to the upper third of the stomach. We describe our modification of this procedure in this report. Method : After creating an surgical pneumoperitoneum, the stomach was mobilized using laparoscopic coagulating shears. Upper half of the greater curvature and three-quarters of the lesser curvature were then dissected along with regoinal D2 lymphadenectomy. This was followed by a 5 cm, longitudinal mini-laparotomy in the upper abdomen, and the construction of the exteriorized stomach with a gastric tube measuring 20 cm long and 4 cm wide. Reconstruction with an esophagogastrostomy was performed using a circular stapler. Result : No post-operative morbidity or mortality was observed in this small series of patients. The average operative time was 250 minutes (range 220-300 minutes), and the average blood loss was 150 ml (range 90-180 ml). The mean number of lymph nodes harvested during these laparoscopic proximal gastrectomies was 24 nodes (range 22-25 lymph nodes). The average postoperative hospital stays was 7.5 days (range 7-8 days). Conclusion : Our technique of laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without phloroplasty offers a minimally invasive technique with the potential of impoving the post-operative quality of life patients with an early-stage proximal gastric cancer.

效率的인 環境敎育을 위한 敎授·學習方法의 改善에 關限 硏究 : 中學校를 中心으로 in Middle School

김현철,이택순,문병현,서규태 7개 국립대학교 환경연구 논문집 공동발행 위원회 2002 환경연구논문집 Vol.2 No.1

This paper focuses on the development of desirable curriculum for environmental education in middel school. From the questionnaire investigation for teachers and students of 10 middle schools in Gyeongnam-do, it is desirable that the eduaction program should be practical and experiential rather than the current cramming lecture. In addition, environmental education program should be introduced as a compulsory subject through continuous and systematic curriculum. A training program is necessary for specialist group teaching environmental issues too. Institution of regional environmental education center is an appropriate meausre to develop such program. It will be helpful for open communication between school and social community. National support is necessarily required to promote research activity and to develop innovative teaching materials in such center. Consequently the national environmental network will be constructed and effective environmental education will be implemented.

레이저가공기를 이용한 SAPH400의 절단특성에 관한 연구

조규재,박종남,이승철 朝鮮大學校 機械技術硏究所 2004 機械技術硏究 Vol.7 No.1

본 연구의 목적은 자동차 구조용 열간 압연강(SAPH400)의 몇 가지에 대한 최적의 절단 가공 조건을 구하기 위한 실험이다. 현재 대부분의 절단가공은 기계적인 방법이 활용되고 있으며,절단속도와 정밀도,금형제작,공구수명 등의 문제점이 많아 CO₂레이저 가공기를 이용하여 이를 해결하고자 하였다. 실험은 유입가스의 압력,절단속도 및 출력의 변화를 주었을 경우 절단면의 조도와 폭에 어떤 영향을 주는가를 연구 · 분석하였다. 실험결과 출력,절단속도 및 절단가스압력을 변화시켰을 때 출력은 1500W,절단속도는 1100mm/min. 절단 가스압력은 0.5kgf/㎠마 일 때 가장 양호한 표면 거칠기 값 18.06㎛을 나타냈다. This study aims at making experiments to fine the optimum cutting processing conditions of some sheets in common use of Steel Automobile Press Hot 400(SAPH400). Current mechanical methods for cutting processing of most have several problems in relation to cutting speed, precision, manufacture of metal mold and life of tools, which we tried to solve by using the CO₂ Laser Machining. We studied and analyzed what effects on the roughness and width of a section changes in the pressure of blowing gas, cutting speed and power according to the quality and thickness of the material might exert. The results from this experimental study are summarized as follows, when power, cutting speed and gas pressure were changed, the finest value of surface roughness, 18.06㎛ was attained at power of 1500W, cutting speed of 1100mm/min and gas pressure of 0.5kgf/㎠.

施肥量 Yacon의 生育 및 收量에 미치는 效果

李喆浩,崔周鎬,송인규 진주산업대학교 1997 論文集 Vol.36 No.-

This experiment was conducted to investigate the effect of the amount of fertilizer on the growth and yield characters of yacon(Polymnia sonchifolia POEPP) and to establish the cultivation method. An introduced variety of yacon was used. Seeding dates were from April 5 to April 7, and seedlings were transplanted on May 25. Planting density was 80㎝(width)×45㎝(distance). The minimal amounts of fertilizers of N-P-K were 3.5-5.0-3.5㎏/10a. And twice, three times and four times as much as the minimal amounts were applicated. The results were summarized as follows. 1. As the amounts of fertilizer were increased, plant height, leaf width, no. of leavesm no. of nodes, stem diameter and fresh weight of top part increased but leaf length was not different among treatments. 2. Tuber yield was highest in the 10.5-15.0-10.5㎏/10a treatment, whose total yield increased because of the heavy amount of fertilizer, and yield of commercial goods was highest in 7.0-10.0-7.0㎏/10a treatment(36.9%). 3. Plant height(r=0.973^**), leaf width(r=0.968^**), no. of leaves(r=0.994^**), and no. of nodes(r=0.949^**) had higher positive correlation with tuber yield, respectively.