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소아 급성 위장염 환자의 Rotavirus 감염에 관한 검색(2)
김대근 ( D K Kim ),이주섭 ( J S Lee ),윤현정 ( H J Yun ),김경현 ( K H Kim ) 대한임상검사과학회 1992 대한임상검사과학회지(KJCLS) Vol.24 No.1
Human rotavirus (HRV) in the stools of pediatric inpatients with acute gastroenteritis were detected by ELISA (Mar. 1982-Apr. 1986) and LA test (May. 1986-Feb. 1992) at HanYang University Hospital. The results were fallowing: 1. The positive rate of HRV was 38.1% (1119/ 2934 patients). 2. The seasonal variation of rotavirus gastroenteritis was significantly high in Autumn (47.5 %). 3. The frequency of HRV infection was highest on November ( 55.3%). 4. The ratio of male and female children with HRV infection was 1.1: 1. 5. The age group distribution of children with HRV infection were 20.5% below 6 months of age, 62.9% between 6 to 12 months of age, 58.1% between 13 to 24, 9.2% between 25 to 36 months of age and 6.1% over 36 months age. 6. The ELISA was as sensitive as electron microcopy for detection of rotavirus.
[가솔린엔진부문] 2-stroke 소형엔진의 촉매후처리법에서 촉매 비활성화에 관한 연구
김대근(D.K.Kim),정동수(D.S.Jeong),최교남(K.N.Choi),조규백(G.B.Cho),김태권(T.K.Kim) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The world emission regulations for motorcycle become increasingly strict recently. Considering both performance and product costs, the use of catalytic aftertreatment to reduce harmful gases in the exhaust streams of 2-stroke small engine is becoming widespread. The primary exhaust gas pollutants are carbon monoxide(CO) and hydrocarbons(HC) for vehicles equipped with 2-stroke engine. The major contributors to deactivation in catalyst performance are extended operation at elevated temperatures and exposure to unburned gasoline and lubricant oil.<br/> This paper investigates the impact of both thermal and unburned gasoline and oil related deactivation on the performance of catalysts in 2-stroke small engine