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전재철,마상용 ( Jae Chul Chun,Sang Yong Ma ) 한국환경농학회 1995 한국환경농학회지 Vol.14 No.3
The effect of N-(4-chlorophenyl) maleimide(CPMI), plant growth regulators, and alkylating agents on gluathione(GSH) content and glutathione S-transferase(GST) activity was examined with 3-day-old etiolated sorghum(Sorghum bicolor [L.] Moench) seedlings. The GSH content and GST activity of untreated seedlings were higher in shoots than that in roots. Response of GST activity in coleoptile was significantly greater than in other tissues of sorghum seedling. In CPMI-treated seedlings, GSH content was not significantly different from that in untreated seedlings. CPM treatment resulted in 2.3-fold increase in GST activity measured with metolachlor as substrate in the coleoptile region. In contrast, change in GST activity measured with metolachlor as substrate in the coleoptile region. In contrast, change in GST activity measured with 1-chloro-2,4-dinitrobenzene did not occur. The increase of GST activity was caused by induction of a GST isozyme, which is substrate-specific to metolachlor. Subsequently, two hypotheses related to metolachlor detoxification were evaluated on the basis of regulation of plant growth regulators and substrate induction of GST activity. In coleoptile, GST activity measured with metolachior was increased to 2.1-and 3.4-fold by both 2,4-dichlorophenoxyacetic acid(2,4-D) and metolachlor treated at the germination stage of sorghum, respectively. Treatments of 2.4-D and metolachlor also induced isozymes exhibiting the activity toward metolachlor. One of the isozymes was co-eluted with that induced by CPMI. These results indicated that increase in GST activity by CPMI may be partially related to auxin regulation and substrate induction.
전재철,박용덕,김광호,남철,이동종,김두석 한국경영과학회 1998 한국경영과학회 학술대회논문집 Vol.- No.1
본 연구에서는 정보시스템의 활용도를 향상시키고, 최근 그 필요성이 절실한 전사적자원계획(ERP, Enterprise Resource Planning)의 인프라(Infra)를 구축하기 위하여 전동기 생산현장용 생산시점 정보관리(POP : Point of Production) 시스템을 구축하였다. 전동기 생산현장에는 생산계획의 지연, 불명확한 생산계획, 작업 진척관리 불가능, 단위 공정별 부하관리 불가능, 자재 소요량 및 불출처 파악 불가능 등과 같은 생산 계획 및 관리상의 문제점이 있었다. 그러나 본 시스템을 도입함으로써 실시간 생산실적 관리가 가능해졌고, 그로 인하여 진척관리와 부하관리 뿐 만 아니라 동적 일정계획 수립도 가능해졌다. 또한 전동기 생산 특성상 반드시 필요한 공정내 간이 자동창고관리가 가능해졌다.
전재철,마상용 ( Jae Chul Chun,Sang Yong Ma ) 한국환경농학회 1994 한국환경농학회지 Vol.13 No.3
Mode of safening action of N-(4-chlorophenyl)maleimide (CPMI) on metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-l-methylethyl) acetamide] was investigated in sorghum(Sorghum bicolor L.). CPMI was synthesized by dehydration of N-(4-chlorophenyl)maleamic acid(CPMA) which was obtained from amination with maleic anhydride and 4-chloroaniline. Melting points of CPMA and CPMI (>95% purity) were 200-202℃ and 116-118℃, respectively. Growth response study indicated that seed treatment of CPMI increased tolerance of sorghum shoot to metolachlor approximately threefold. Sorghum shoot was more sensitive to injury caused by metolachlor and CPMI activity than the root. Metolachlor was initially absorbed by sorghum shoot and metabolized to the metolachlor-glutathione conjugate in CPMI-untreated and treated shoots. However, CPMI treatment significantly accelerated metabolism of [^(14)C] metolachlor in sorghum shoot, resulting in decrease in metolachlor content and increase in formation of the glutathione conjugate. It was concluded that the protection against metolachlor injury conferred by CPMI appeared to be correlated to detoxification of metolachlor in sorghum shoot tissue.