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이병천(B. C. Lee),이종일(J. I. Lee) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
Numerical simulations of 3-dimensional turbulent flow around SOLAR CAR using CFD code.STAR-GD.are carried out in order to reduce aerodynamic drag and improve cooling performance of driver. motor and battery.
浸透性殺蟲劑의 土壤施用이 배추 진딧물 防除에 미치는 效果
金炅濟,李炳天,吳允重 동국대학교 대학원 1974 大學院硏究論集-東國大學校 大學院 Vol.4 No.-
This experiment was Conducted to study the efficiency of Aphid Control and to increase the yield and quality of chinese cabbage through the prevention of virus disease with permeable insecticides applied to the soil. Four Kinds of insecticide Disyston, Furadan, PSP-204 and Azodrin were applied in setting plants. 1. The number of parasitic aphids per plant of experiment plots treated with insecticides in as follows; A. Disyston … 18.5 B. Furadan … 30.2 C. PSP-204 … 74.2 D. Azodrin … 345.2 E. Control … 368.7 2. The residual efficiency of Disyston Continued for 40 days after application. 3. The rate of virus infection in chinese cabbage was 5.0% in the Disyston treated plot compared to 23.1% in the control plot. The difference was significant among the insecticides. 4. Mean weight per fresh chinese cabbage in the Disyston and Furadan treated polt was heaviest by 2,000g, significantly heavier than the others.