Use of a Spray Device to Locate Touch DNA on Casework Samples

The use of a fluorescent dye to visualize cellular material on surfaces offers a targeted sampling approach for locating touch DNA on casework items. However, the current application of such dye is not feasible for examination of relatively large items. As a result, development of an efficient dye application system is required to translate this approach into practice. Here, the spray pattern (area covered, intensity, and evenness) of 15 different commercial spray devices was examined visually using food coloring. From this, five devices were selected to apply Diamond Nucleic Acid Dye (DD) to three substrates (glass slide, plastic sheet, and brown packing tape) seeded with saliva and touch DNA. The cellular material was visualized using the Dino-lite Microscope and Polilight. The inhibitory effects of DD afforded by each spray device were examined using Identifiler Plus^® DNA profiling kit and a DNA input of 800 pg. The two most promising devices were further tested on a range of mock casework items seeded with touch DNA. The results presented demonstrate the feasibility of a spray system to apply DD to large surfaces and subsequently detect cellular material at both micro and macroscale. Specifically, the data suggest that a pressurized continuous-spray system is favorable and that droplet size influences the intensity of fluorescence and surface coverage. Furthermore, this study indicates that full STR profiles can be obtained following spraying with DD solution, even with excessive application, which is essential for the widespread use of these devices in casework.     

军队院校计算机教材改革初探

随着教育信息化的不断普及和发展,军队院校计算机教材越来越不能适应时代和教学的需要,滞后性和局限性问题越来越突出,如何进行军队院校的计算机教材的改革,已经成为一个亟待解决的问题。本文通过对军队院校的计算机教材的现状、计算机学科的特点和部队院校特殊性的分析,对计算机教材的改革进行了初步探讨。     

TDS-GC/MS法检测黑色中性笔墨迹中挥发性溶剂的历时性变化

目的 应用热脱附-气相色谱/质谱(TDS-GC/MS)分析,研究7支黑色中性笔墨迹中挥发性溶剂的历时性变化规律.方法 选取7支不同品牌的黑色中性笔,分别在A4纸和笔记本上进行一次制样,然后在不同时间点取样,应用所建TDS-GC/MS方法分析墨迹中乙二醇、二甘醇和三甘醇在200余天内的含量变化.结果 6支笔中的乙二醇、三...     

论刑事非法证据的证据能力

刑事非法证据的证据能力原则涉及犯罪控制和人权保障、实体公正与程序正义价值尖锐冲突.从两大法系主要国家立法及实践考察来看,结合我国立法现状及国情,我国非法证据的证据能力原则应当是非明文不排除.     

中国高等教育中"双语教学"的有效性解析

本文从中国实际出发,分析了影响教学质量的诸要素,从而对国内双语教学提出了客观中肯的评判。     

Characteristic Features of Hanging: A Study in Rural District of Central India

The ligature mark is the most relevant feature of hanging. This study was undertaken with a view to determine the characteristic features of hanging and its association with ligature material or mode of suspension. Of a total medicolegal deaths reported at an Apex Medical Centre, hanging was noted in 4.1% cases, all suicidal with mortality rate of 1.5 per 100,000 population per year. The hanging was complete in 67.7% with nylon rope as the commonest type of ligature material used for ligation. The hanging mark was usually single, situated above thyroid cartilage, incomplete, prominent, and directed toward nape of neck. The mark of dribbling of saliva was seen in 11.8% cases. Facial congestion, petechial hemorrhage, and cyanosis were significantly seen in partial hanging. Though occasionally reported, the argent line was noted in 78.7% hanging deaths with neck muscle hemorrhage in 23.6% cases. Fracture of neck structure was predominant in complete hanging.     

European Human Rights Law and the Normalisation of the ‘Closed Material Procedure’: Limit or Source?

Once a legal abnormality that was criticised on human rights grounds, the closed material procedure (CMP) has now become the main mechanism for dealing with allegedly sensitive security information in the UK. This article considers the role of European human rights law in that process. It argues that the CMP can be conceptualised as the product of human rights law, which has developed so as to legalise and normalise its use, and that this process is symptomatic of a deeper inter‐relationship between human rights law and the preservation of states' security interests, which renders the former inherently unsuitable for dealing with security phenomena.     

视听资料的证据能力及采信规则

视听资料在我国是一种独立的证据种类 ,它对民事案件过程的再现具有其他证据种类无法比拟的特性。但是 ,视听资料本身又包含有易被伪造、篡改的先天不足 ,瑕疵视听资料 (包括非法视听资料 )的证据能力该如何判断 ?视听资料在司法实践中的采信规则该如何把握 ?等问题 ,都是我们要面对且亟待解决的课题。本文主要就视听资料的证据能力及采信规则进行一番探讨 ,以为今后建立视听资料的有关具体制度作一些理论上的准备     

戒毒难之探索--吸毒复吸机理之新探

毒品对人体造成了生理上的实质性损害,改变了人脑中枢的正常犒赏功能,仅仅依靠自然或意志是不可能恢复的.因此,生理依赖才是其根本的原因,心理依赖是建立在生理依赖的基础上的.     

一次手印鉴定引发的思考

近期,我们受理了一起特殊的手印鉴定。此前该手印已有肯定与否定两种截然相反的鉴定结论,鉴定委托人又不能提供检材和样本原件,只将相关的照片送检。在检验过程中,我们经过观察分析、实验验证、计算机图像处理等过程,弄清了手印的本质,做出了科学、客观的结论。