犯罪現(xiàn)場(chǎng)勘驗(yàn)中微量物證的發(fā)現(xiàn)和提取

1、四川警察學(xué)院畢業(yè)論文 第 1 頁1四川警察學(xué)院政法干警招錄培養(yǎng)體制改革試點(diǎn)班畢 業(yè) 論 文犯罪現(xiàn)場(chǎng)勘驗(yàn)中微量物證的發(fā)現(xiàn)和提取2012 年 5 月 1 日四川警察學(xué)院畢業(yè)論文 第 3 頁3Crime scene investigation evidence in detection and extractionAbstract：In recen

2、t years, with the intelligent type of criminal cases increased significantly, the scene of a crime not to extract valuable fingerprints, footprints of trace evidence, the trace material evidence extraction on case detect

3、ion effect is bigger and bigger, the scene surveying work should strengthen the evidence consciousness. In view of this, this paper describes the system of micro-material evidence in criminal cases to the trace evidence

4、of the definition, the theoretical basis for the existence and characteristics such as small volume, light weight, is not easy to detect, easy pollution, complex distribution; and the trace evidence of existence and dist

5、ribution of the key parts in different cases, exploration of key sites, as well as trace evidence found in the commonly used methods are introduced; and the introduction of trace material evidence extraction, packaging p

6、rinciple, extraction and packing method, and introduces the explosive residue, gunshot residue, trace forensic evidence, fiber, paint, plastic, rubber, glass, metal, paper, oil stain and adhesives and other common trace

7、material evidence extraction, preservation and matters needing attention. As in reconnaissance found in advance, and more valuable trace evidenceKeywords: Trace evidence Crime scene investigation Key partsDiscover