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        Parallel Imports and Music CD Prices

        Yeh-ning Chen,Ivan Png 한국법경제학회 2008 법경제학연구 Vol.5 No.1

        Parallel imports are a significant academic and policy issue. Official investigations into the impact of parallel imports on music CD prices have reached widely conflicting conclusions. This note reports an event study on an international panel of changes in copyright law to permit or disallow parallel imports. The study shows that, on average, legalization of parallel imports was associated with a 7.2–7.9% reduction in the retail price of music CDs.

      • Low‐Voltage Pulsed Electric Field Sterilization on a Microfluidic Chip

        Liu, Linlin,Zhao, Liping,Yang, Jun,Wan, Xiaoping,Hu, Ning,Yeh, Li‐,Hsien,Joo, Sang W.,Qian, Shizhi WILEY‐VCH Verlag 2013 Electroanalysis Vol.25 No.5

        <P><B>Abstract</B></P><P>A polyimide substrate based microfluidic chip with thousands of comb‐shaped microelectrodes has been designed, fabricated, and tested for sterilization of bacteria by using pulsed electric field. The performance of bacteria sterilization as functions of the electric field strength, pulse number and width, treatment buffer, bacteria growth status, and bacteria enrichment by positive dielectrophoresis has been experimentally investigated on the microfluidic chip. Experimental results show that only 100 V are sufficient to obtain good sterilization of <I>Escherichia coli</I>. Higher electric field strength, bacteria enrichment by positive dielectrophoresis, longer pulse time, buffer with fewer components and nutritions, and suitable bacteria growth status also improve the sterilization of bacteria. In addition, configuration of the microelectrode array affects bacteria sterilization. This microfluidic device allows one to preconcentrate bacteria to a region with high electric field strength by using positive dielectrophoresis, and subsequently kill the enriched bacteria by applying a pulsed electric field through the same microelectrode array.</P>

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