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윤정효(Junghyo Yoon),조영규(Youngkyu Cho),이은두(Eundoo Lee),김재호(Jaeho Kim),이정훈(Jeong Hoon Lee),정석(Seok Chung) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
In this study, we developed nano and micro-particle control system, using ion concentration polarization (ICP) in an ion-selective, resin-coated channel. The particle was controlled by an electric field, a flow rate and ionic concentration of liquid solution. As a result, the particle was tunablely focused and concentrated without any sheath flow. We also provide physical insights of the ICP-control phenomena, and a statistical approach for analyzing the particle control. This ICP-control technology could be applied for separation and preconcentration of various particles, including proteins, bacteria and cells.
정수처리공정시 Ozone Mass Transfer 및 적용에 관한 연구
김동윤,윤정효,임정아,유정아 부산대학교 환경문제연구소 1996 環境硏究報 Vol.14 No.1
The mass transfer was known that a residual ozone was changed to proportion by the ozone dosages. The mass transfer coefficients of ozone calculated for slope of relationships ozone dosage versus residual ozone concentrations. The relationship of ozone utility rate versus slope of its was known to unproportions. A residual ozone could control by the ozone dosages about water qualities and could inlet to ozone of optimum in the reactors. The relationship of organics and reactions of ozone changed by the condition of water qualifies and estimations of organics in a drinking water at the water work systems would be BDOC. The equation of relationships ozone dosages versus increasing BDOC is following: BDOC = BDOC_o + 0.105Cd^0.52