中毒鱼体材料中五氯酚的检验

目的　研究五氯酚的检验方法并对一起五氯酚钠投毒案进行检验。方法　采用高效液相色谱法及气相色谱 质谱联用法对案件所涉及的各种检验材料 ,尤其是鱼体材料中的五氯酚进行检验 ,同时分析新建技术的特点。结果　运用所建方法检出检材中的五氯酚。结论　所建方法可进行五氯酚钠投毒案件的检验 ,且适用范围广。     

DNA技术在系列案件串并中的应用

系列案件、流窜案件时空跨度大,严重影响社会稳定。对其进行及时的串并侦查是一项有效的侦查措施。DNA技术和DNA数据库目前已越来越多地应用于凶杀、强奸、盗窃、抢劫等许多系列案件的串并和认定,为最大限度打击犯罪,合理配置有限的侦查资源提供了强有力的科技支撑。     

围绕构建和谐社会推进群众工作

群众工作是构建社会主义和谐社会的基础性工作。做好群众工作对于构建和谐社会意义重大。同时,建设和谐社会对群众工作提出了新的任务和要求。适应构建和谐社会需要,推进群众工作,必须从多方面作出努力。     

显微操作法提取混合斑中精子细胞方法的探讨

目的尝试建立一种提取混合斑中精子细胞的检测方法。方法在人为控制条件下,制备精液—阴道液混合斑,分别使用显微操作法与差异裂解法分离精子细胞,提取DNA,进行STR基因型检测。结果采用显微操作法检测成功率11/12,差异裂解法成功率1/12,两者有显著性差异。结论显微操作法可有效获取精子细胞,排除女性物质和其它杂质的干扰,STR分型成功率优于差异裂解法。     

The analysis of some evidential materials by inductively coupled plasma-optical emission spectrometry

Inductively coupled plasma-optical emission spectrometry (ICP-OES) is under evaluation at the Central Research Establishment for the analysis of evidential materials. The analysis of standard reference materials has demonstrated that quantitative multi-element data can be obtained from small samples of a variety of materials. The results of some determinations carried out in support of casework investigations are reported.     

对必须牢固树立群众观点的思考

党群关系,关系到党的兴衰成败,生死存亡。共产党人必须尊重人民,深入基层,深入实际,始终保持同人民群众的血肉联系,代表和不断实现最广大人民群众的根本利益。     

论社区安全防范体系的整体构建

社区警务思想是整体构建社区安全防范体系的理论基础。社区警务是指警察与社区公众有机结合,共同探讨和解决可能影响或制约社区正常生活质量的各种问题及潜在的越轨隐患,以达到预防和惩治违法犯罪、确保社区长治久安目的的警务战略思想。     

构筑社区警务平台之策略

社区警务模式是以社区的治安需求为出发点,以社区利益为立足点,联合社区力量进行的社区服务、治安联动的警务运作模式,这种警务运作模式以社区为构建平台。社区这个平台在防范、打击犯罪,教育改造违法犯罪主体,挖掘利用警务资源等方面。都起到了不可估量的作用。     

降解生物检材遗传标记检测的研究进展

降解生物检材遗传标记的检测一直是法医学实践和科研的难点。虽然PCR-STR分析技术能在一定程度上检测降解生物检材的遗传标记,但是对于某些高度降解的生物检材如骨骼、牙齿等的PCR-STR分型仍旧十分困难,存在不稳定性和分型异常现象。本文就近几年来PCR-STR分型技术在降解生物检材的法医实践中出现的问题和解决方法作一综述。     

Lead-free primer residues: a qualitative characterization of Winchester WinClean, Remington/UMC LeadLess, Federal BallistiClean, and Speer Lawman CleanFire handgun ammunition

The elemental composition and postfiring residues of several "lead-free" or "nontoxic" centerfire handgun ammunition types currently available to the general public were examined. Offerings from Winchester, Remington/UMC, Federal and Speer were obtained from retail sources in both .45 ACP and 9 mm when possible. A total of 112 postfiring residue samples (SEM pins) were collected at varying distances from the muzzle, at two distances from target and from the shooter's hands. An additional 20 samples were collected by direct ignition of primers. Qualitative determinations were carried out using scanning electron microscopy (SEM)/electron dispersive spectrometry (EDS) analysis. All types tested contained aluminum (Al), silicon (Si), copper (Cu), and zinc (Zn). Most contain traces of sulfur and calcium. Winchester WinClean and Remington LeadLess contained potassium as the principle ingredient. Federal BallistClean contained barium, while Speer Lawman CleanFire contained strontium. In the main, these compared favorably with manufacturers' MSDS publications and patents granted. The characterizations undertaken here will be of use to the forensic electron microscopist as these formulations gain popularity.