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2006 Issue 2 (Total No. 23)
Published: 15 March 2006 Previous Issue    Next Issue
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Proficiency Testing in Forensic Science:A Method of Supervising the Durative Identification Competence of Forensic Providers and Practitioners SHEN Min;FANG Jian-xin (Institute of Forensic Science;Ministry of Justice;Shanghai 000;China) 2006(2): 19-22+2.  Abstract ( )   As a method of supervising durative identification competence of forensic providers and practitioners, the proficiency testing has a very important value in the quality control of forensic practice and the administrative management of forensic service providers. The type, organization and procedure of proficiency testing are elucidated in this article. Related Articles | Metrics

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Study of Rapid Test Strip for Detecting Alcohol in Saliva ZENG Li-bo;CHEN Lian-kang;HU Xiao-long;WANG Xue-sheng;CHEN Liang;ZHANG Yu-rong (Shanghai Institute of Forensic Science;Shanghai 000;China) 2006(2): 23-24.  Abstract ( )   Objective To develope a reliable rapid test strip for detecting alcohol in saliva according to the relativity of the alcohol concentration in saliva and blood. Methods The alcohol oxidase (ALO) in the presence of peroxidase and its substrate TMB was coated on the test strip by using enzymatic technology. The distinct color could be observed when alcohol exists in the saliva sample. The alcohol concentration could be semi-quantified by comparing color developed on the test strip. Result The alcohol concentration in saliva specimens of 300 volunteers were tested by the alcohol rapid test strip and GC/MS, respectively. The results detected by the two methods were almost the same. The cut-off value of alcohol rapid test strip was 0.1mg/mL, sensitivity 96.5%, specificity 91%, and accuracy 94.7%. Conclusion Alcohol rapid test strip with enzymatic technology is sensitive,rapid and easy to handle in detecting alcohol in saliva, and is suitable for onsite testing. Related Articles | Metrics

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A Study of Foot Impressions on the Upper-Side Sole of Shoes XIA Xiao-ling(Hunan Advanced College of Public Security;Changsha 000;China) 2006(2): 25-27.  Abstract ( )   Discovery, collection and application of foot's and shoe's impressions left at crime scenes are very important in criminal investigations. In this paper, from a new angle, we present our study of foot impressions on the upper-side surface of shoe's sole. The concepts, forming mechanism, characteristics and application of foot impressions on the upper-side sole of shoes are discussed. Related Articles | Metrics