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This paper offers a rationale for expanding current efforts to support industrial innovation to encompass the important and unique contributions that the social sciences can make in this area. In order to provide a comprehensive overview of these contributions, the paper examines the role that social factors play in the process of technological innovations, the importance of social innovations, and the potential contributions of social science research to the diffusion of innovation as well as its importance in considering the broad social impacts of social innovations.  相似文献   
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An improved technique for cocaine extraction from urine samples for gas chromatographic (GC) analysis is described. Employing a simple liquid-liquid extraction (LLE) of cocaine with a mixture of ethyl ether:isopropanol (9:1) the method presents a mean recovery of 74.49%. Limit of detection (LOD) and limit of quantification (LOQ) were 5 and 20 ng/ml, respectively. The method is highly precise (coefficient of variation (CV) <8%) and linear from 20 to 2000 ng/ml. It can he applied to detect the presence of cocaine in urine as a marker of its recent use in drug abuse treatment protocols.  相似文献   
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