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정대원(Dae-Won Chung),이율재(Yul-Jae Lee),박지호(Ji-Ho Park),최철원(Cheol-Won Choi),마상철(Sang-Chul Ma) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
This paper presents a regenerative braking system of electric vehicles using super capacitor as the braking energy storage element. A bi-directional controlled current flow with the capacitor is connected in parallel with battery, and is controlled so that the whole of the braking energy is absorbed into the capacitor and released back to the electric motor upon acceleration. the converter needs the series-parallel switchover circuit for making the best use of the series capacitors and for limiting the step-up ratio of the boost converter. The circuit arrangement and its control method are the major topics of this paper. The proposed method are verified by computer simulation and performance test on the experimental setup.
Papanicolaou stain의 시간단축 및 시약절약을 위한 세포질염색시약의 연구
김순재 ( Soon Jae Kim ),이문정 ( Moon Jung Lee ),조민호 ( Min Mo Cho ),박노진 ( Noh Jin Park ),마상철 ( Sang Chul Ma ),한명기 ( Myung Ki Han ) 대한임상검사과학회 2000 대한임상검사과학회지(KJCLS) Vol.32 No.3
Currently, Orange-G and EA50 are being used in Papanicolaou stain. The simplification of this two reagents is studied in this research. According to the result, the most favorable arrangement condition is like the following. 1) It is proved that the most satisfactoη stain property is made when Orange-G is 2.5ml, Light green is 4.5ml and Eosin-Y is 7.0ml in the aspect of density. 2) The best qulified stain property is made up when the pH is 5.0-5.5 in the aspect of pH in mixed reagent. Therefore, for the optimum mixture of reagents, you should mix Orange-G 2.5ml, Light geen 4.5ml and Eosin-Y 7.아nl together, and then, add alcohol whose alcoholicity is 95 percent to it whεn it comes to the amount of 1α)()ml. And you shou1d add phosphotungstic acid 2g, saturated solution of lithium carbonate O.5ml and glacial acetic acid to it in a row lUltil it comes to pH5.0-5.5.