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김정엽,신현준,강세구,안경철,Kim, Jung-Yup,Shin, Hyun-Joon,Kang, Se-Gu,Ahn, Kyung-Chul 한국터널지하공간학회 2004 터널기술 Vol.6 No.2
도로터널내 화재가 발생한 경우 자연환기와 종류식 환기시스템에서의 연기유동에 대한 연구가 수행되었다. Froude Scaling에 기초한 1/18 축적의 축소모형실험장치가 제작되었으며, 화원으로는 연료심지를 이용한 14.55kW 규모의 연소기가 사용되었다. 화원으로부터 등비간격으로 터널천정부근과 수직방향의 온도분포가 측정되었으며, 연소가스의 농도가 피난대피구 입구에서 측정되었다. 연구결과로서 자연환기시스템에서 비상대피구가 225m 간격으로 설치되어 있을 경우 비상대피구 구간의 연기확산시간은 256초가 되며, 20MW의 화재강도에 대해 화염역류를 완전히 방지하기 위해서는 터널풍속을 2.8m/s로 형성해 주어야 한다. In this study, smoke movement in tunnel fire with natural and longitudinal ventilation systems has been investigated. Reduced-scale experiments were carried out under the Froude scaling using 14.55kW fire source with a wick and experimental data is obtained with 1/18 model tunnel test. Temperature profiles were measured under the ceiling and vertical direction along the center of the tunnel and poisonous gas was measured at emergency exit point. The results show that refuge time for 225m intervals of emergency exit in case of natural ventilation systems is 256 seconds and critical velocity for sufficient back-layer prevention is 2.8m/s for fire strength of 20MW.
Pyrantel Pamoate (Combantrin)에 依한 蛔蟲 및 鉤蟲感染의 集團治療
徐丙卨,朴定圭,趙昇烈,姜信榮,魚光本,康世喆,李源宰,李正雨,黃邱一 中央醫學社 1972 中央醫學 Vol.23 No.6
The mass treatment trial of pyrantel pamoate on Ascaris lumbricoides and Ancylostoma duodenale infections was carried out to school-children and inhabitants in rural areas in the central part of Korea. Pyrantel pamoate ("Combantrin") tablet (123 mg base) was administered as a single dose of 10. 0 mg per kg. body weight to a total of 4,198 Ascaris infected cases selected out of 4,436 (41. 6%) positives, who were screened from the total 10,660 collected stool specimens. Of these, only 3,169. cases were followed up after treatment to provide an analysis in this study. Incidentally 161 cases with concomittently infected hookworm were also subjected to assess the efficacy of pyrantel pamoate against A. duodenale. The egg negative conversion rate on A. lumbricoides was 95.3%, and on A. duodenale, 97.5% four weeks following treatment. In failed cases, the egg reduction rates on both of the infections were 97.6% and 97.3% respectively. No side effects and no problem in drug administration were demonstrated. It is concluded that this study confirms the high efficacy of pyrantel pamoate in the treatment of Ascaris lumbricoides and Ancylostoma duodenale infections and also proves the acceptability and safety of this drug in the mass treatment of ascariasis in a population with relatively high worm burden.