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농약의 토양 표면유출에 관한 연구 - Ⅰ 포장에서 자연강우에 의한 Captafol 의 유출특성
김균(Kyun Kim),김용화(Yong Hwa Kim),김정한(Jeong Han Kim),박창규(Chang Kyu Park) 한국응용생명화학회 1996 Applied Biological Chemistry (Appl Biol Chem) Vol.39 No.6
As a first step of pesticide runoff studies, runoff losses of captafol were measured under natural rainfall conditions in apple orchard area. The maximum concentration of captafol was 180 ppb at 5 th sampling period when the rainfall occurred within 24 hours after captafol was applied, and the concentration of samples from other periods was below than 20 ppb. Total runoff loss of captafol was below 0.1%. About 10 fold of dilution factor was observed at the merging point with stream near outlet from orchard and about 50 fold was observed at the next merging point which is located further down. Therefore, captafol will not harm the aquatic organisms due to dilution factor(10∼50 fold) and rapid hydrolytic degradation rate even when it was run off into a stream nearby.
김균,김정한,박창규 ( Kyun Kim,Jeong Han Kim,Chang Kyu Park ) 한국환경농학회 1997 한국환경농학회지 Vol.16 No.3
Pesticide runoff from crop fields is the important concern in environment because it may affect aquatic ecosystem and human. And it is essential to find out the amount of runoff and evaluate the possible effect on aquatic organisms for the human and environmental risk assessment. However, no definite guidelines have been established and related researches are not active in Korea since too many factors were involved in pesticide runoff and it was hard to predict it by using simple data. Therefore, various runoff studies with natural field, simulated rain/field, and computer models were reviewed for the general aspect of experiments and results.
농약의 토양 표면 유출에 관한 연구-II 포장에서 인공강우에 의한 phorate의 유출특성
김균,염동혁,김정한,이성규,김용화,박창규 ( Kyun Kim,Dong Hyuk Yeom,Jeong Han Kim,Sung Kyu Lee,Yong Hwa Kim,Chang Kyu Park ) 한국응용생명화학회 1997 Applied Biological Chemistry (Appl Biol Chem) Vol.40 No.4
Runoff of phorate, soil insecticide, were measured under simulated rainfall conditions in field using small test plot(120×120 ㎝) at the loam area and loamy sand area. Fish acute toxicity tests were performed with runoff water to elucidate its toxicological effect on organisms in ecosystem. The average concentrations of phorate in runoff water from loam and loamy sand soil were 11.3 ppb and 4.8 ppb, respectively. However, there was no significant concentration difference between the heavy and the light rain. With loam soil, average runoff rates were 1.31 and 0.18%, while with loamy sand soil those were 0.48 and 0.012% under the heavy and the light rain conditions, respectively. Total average runoff rate was 0.50%. With killifish, no mortality was observed in runoff water from loamy sand soil, whereas half of the population was dead in runoff water from loam soil when it was diluted to 54.4% content.
The Grading Methods for the Apparel CAD system
Jo, Jin Sook,Lee, Dae Hoon,Jang, Sng Ok,Park, Chang Kyu,Kim, Min Kyun 梨花女子大學校 韓國生活科學硏究院 1993 韓國生活科學硏究院 論叢 Vol.52 No.-
본 연구는 개발중인 한국형 Apparel CAD System에서 채택하게 괼 그레이딩 방법에 관한 연구이다. 현재 상용으로 개발된 유사한 성능의 시스템들에서 사용하는 방법에 관하여 비교연구하여 그 장단점 및 개선가능성을 찾아보았고 그 결과 Split Grading Method를 채택하기로 결정하였다. 이 방법의 장점은 지금 현재 가장 많이 사용되고 있는 Shift Grading Method와 성능에서는 비슷하고 사용하기에는 더 편리하다는 것이다. 그레이딩 방법에 선택된 후에는 이를 실현하기 위한 각각의 기능들을 정리하였고 어떻게 사용자에게 제시할 것인지에 대하여도 연구되었다.