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김윤신,이은규,엽무종,김기영 한국환경보건학회 2002 한국환경보건학회지 Vol.28 No.1
A measurement of indoor microorganism using Reuter Centrifugal Air Sampler(RCS) was undertaken during October 1991 - February 1999 and 6-Stage Cascade Air Sampler was undertaken during May 2001 - June 2001 in Seoul. Sites including book store, department store, theater, subway station, underground shopping center, hospital, office building, sports facility, and eduationa institutio were chosen to measure indoor microorganism. The results were as follows: 1. The average of total microorganism collected on the agar strip GK-A media were, in the order, subway station, hospital, underground shopping center, department store, book store, theater, sports facility, educational institution, office building in sites. The highest concentration of 711cfu/m3 was found in the subway station and the lowest concentration of 44cfu/m3 was found in office building. 2. The average of staphylococci collected on the agar strip GK-S media, in the order, were subway station, underground shopping center, hospital and department store, department store, theater, office building, sports facility and educational institution in sites. The highest concentration of 502cfu/m3 was found in the subway station and the lowest concentration of 14cfu/m3 was found in sports facility and educational institution. 3. The average of fungus collected on the agar strip GK-HS media, in the order, were underground hospital, shopping center, theater, subway station, department store, book store, sports facility, educational institution, and office building in sites. The highest concentration of 252cfu/m3 was found in the hospital and the lowest concentration of 32cfu/m3 was found in office building. 4. Ratio of Indoor/Outdoor, determined by site was 1.12-2.38 in total count, 1.00-2.35 in staphylococci, and 0.99-1.34 in fungus. 5. The positive results of test were 12-24% in indoor and 9-43% in outdoor. 6. By gram staining gram positive cocci were 59.9%, gram positive bacill 24.4%, gram negative bacilli 10.4%, and gram negative cocci 0.5%.
지진예측연구에 있어 과거 발생된 지진의 분포 및 발생현황에 대한 한반도 지진분포자료의 데이터베이스 구축에 관한 연구
김윤신,이철민,김현탁,장기식,이진원,엽무종 한양대학교 환경및산업의학연구소 2001 環境과 産業醫學 Vol.10 No.1
A survey and a research for the distribution and status of occurrence of previous earthquakes are essential factors to predict future earthquakes, and in order to establish database for the earthquakes each year in the Korean peninsula, database far earthquakes between 1980 and August 2000 are established based on the data provided by the weather obsertvatory. And to use the database established, frequency of earthquakes for each earthquake area is calculated using the MATLAB (version 5.2.0.3048) of Math Works, Inc. Earthquakes are categorized according to their points, and a special program which selects and calculates for earthquakes of the same category upon the request is made. Results of the study were as follows 1.Earthquakes had been occurred total 436 times in the Korea peninsula during 1980 - 2000. 2.The maximum frequency of occurred earthquakes in the Korea cities was 23 times in Seoul city. 3.The magnitude ranges of occurred earthquakes in the Korea peninsula were from 1.9 point to 7.9 point. 4.The magnitude ranges of frequency occurrence in the Korea peninsula were from 2.6 point to 3.0 point and the magnitudes below 4.0 point were more than 90%.