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차량의 전기부하와 Charing System Matching 연구
박동균(Dong-Kyun Park),조성현(Seong-Hyeon Jo),이종화(Jong-Hwa Lee),조상복(Sang-Bok Cho) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
This paper proposed that it can appraise a safe source of electric power service function in every kind of the Electric load of cars and compatibility of the vehicles charging system include the battery in early stage. we not only show the most suitable specification of battery and alternator through appraisal of the electric charging and discharging-balance effect, but also appraise effect of the electric charging and discharging about removing the cause of the price increase and changing every kind of the engine factor(rpm, pully ratio) and the electric load. Judging from this, we expect reduction of experiment time.
Dracocephalum palmatum Stephan 잎 헥산 분획 추출물의 인간 유래 전립선 암세포 사멸에 대한 작용
이민지 ( Min Ji Lee ),이세은 ( Se-eun Lee ),최나리 ( Na Ri Choi ),조성현 ( Sung Hyeon Jo ),조수인 ( Suin Cho ) 대한본초학회 2018 大韓本草學會誌 Vol.33 No.4
Objectives : Dracocephalum palmatum Stephan (Lamiaceae) is a medicinal plant used by the East-Russian nomads but there were few studies on this plant. This study was to evaluate anti-cancer effects of D. palmatum Stephan leaf hexane fraction on human derived prostate cancer cell death. Methods : The dried leaves of D. palmatum were dissolved in methanol, and hexane fraction (DpLH) was again obtained from lyophilized methanol extract (DpLM). DpLH was investigated by measuring by MTT assay and annexin V/PI staining to evaluate its effects on the cell viability and apoptosis of PC-3 cells. The ROS generations were detected by DCF-DA dye. The protein expressions were confirmed by p-AKT, Bcl-2, Bax, procaspase-3 activities. Results : After treatment of DpLH to PC-3 cells, the cell proliferation was significantly inhibited, and in addition, DpLH treatment also accelerated apoptosis of PC-3 cells. When DpLH was treated to the PC-3 cells, its ROS production significantly decreased. The proportion of all proteins (p-AKT/actin, Bcl-2/Bax and procaspase-3/actin ratios) showed decreasing tendency of expression compared with the control group. Conclusions : As shown in the above results, the extract from D. palmatum inhibits ROS production and promotes cell death, which is considered to be a relatively safe induction of cell death when administered to a living body. In conclusion, these results suggested that DpLH may have anti-cancer effect in human prostate cancer cell.