Methyl 3-[3',4'-(methylenedioxy)phenyl]-2-methyl glycidate: an ecstasy precursor seized in Sydney, Australia

Five 44 gallon drums labeled as glycidyl methacrylate were seized by the Australian Customs Service and the Australian Federal Police at Port Botany, Sydney, Australia, in December 2004. Each drum contained a white, semisolid substance that was initially suspected to be 3,4-methylenedioxymethylamphetamine (MDMA). Gas chromatography-mass spectroscopy (GC/MS) analysis demonstrated that the material was neither glycidyl methacrylate nor MDMA. Because intelligence sources employed by federal agents indicated that this material was in some way connected to MDMA production, suspicion fell on the various MDMA precursor chemicals. Using a number of techniques including proton nuclear magnetic resonance spectroscopy ((1)H NMR), carbon nuclear magnetic resonance spectroscopy ((13)C NMR), GC/MS, infrared spectroscopy, and total synthesis, the unknown substance was eventually identified as methyl 3-[3',4'(methylenedioxy)phenyl]-2-methyl glycidate. The substance was also subjected to a published hydrolysis and decarboxylation procedure and gave a high yield of the MDMA precursor chemical, 3,4-methylenedioxyphenyl-2-propanone, thereby establishing this material as a "precursor to a precursor."     

A Statistical Validation of the Individuality and Repeatability of Striated Tool Marks: Screwdrivers and Tongue and Groove Pliers*

Abstract: Tool mark identification relies on the premise that microscopic imperfections on a tool’s working surface are sufficiently unique and faithfully transferred to enable a one‐to‐one association between a tool and the tool marks it creates. This paper presents a study undertaken to assess the validity of this premise. As part of this study sets of striated tool marks were created under different conditions and on different media. The topography of these tool marks was acquired and the degree of similarity between them was quantified using well‐defined metrics. An analysis of the resulting matching and nonmatching similarity distributions shows nearly error‐free identification under most conditions. These results provide substantial support for the validity of the premise of tool mark identification. Because the approach taken in this study relies on a quantifiable similarity metric, the results have greater repeatability and objectivity than those obtained using less precise measures of similarity.     

Machinery‐Related Deaths: Relevance of Workplace Investigation and Antemortem Radiological Data in Reconstructing the Fatality

Abstract: Machinery‐related fatalities are one of the leading causes of traumatic occupational deaths. In our report, we present the case of a 40‐year‐old male who suffered a severe head trauma while working in a cut‐foam industry and died despite an early craniectomy. The radiological reconstruction of the skull based on preoperative computed tomography scans disclosed a large depressed conical fracture of the left parietal bone. The 3D‐reconstruction of the work area, combined with a fit‐matching analysis between the machinery and the depressed skull fracture allowed us to conclude that the head was crushed between the sliding bar of the cutting device and the metallic protuberance on the opposite side. The case underlines the importance of a detailed workplace investigation and of a thorough evaluation of all circumstantial, clinical, radiological, and autopsy data in the reconstruction of machinery‐related fatalities to identify any possible legal responsibilities of the worker and/or the employer.     

3g运营商的法律风险分析——以3g产业链为视角

随着3g通信技术的深度发展,3g产业链呈现出多维互动格局.运营商将在更多环节、更广泛区域内与更多主体形成复杂和敏感的法律关系,从而增大了运营商所承担的法律风险.运营商必须强化对3g产业链的控制、协调、整合,合理有效地防范3g运营的法律风险.     

三维激光扫描仪在立体足迹检验中的应用

三维激光扫描仪是用于采集实物三维几何数据信息的先进仪器。其运用全自动立体激光扫描技术,可以精确迅速地获取实物三维信息。将获得的信息通过点云数据处理软件转化为三维模型,实现实物的＂实景复制＂——三维建模。这种技术方法可以用于立体足迹的形态特征检验,在检验能力和效果上都更为出色。     

The Economic Cost of March 11: Measuring the Direct Economic Cost of the Terrorist Attack on March 11, 2004 in Madrid

This article attempts to measure the direct costs that the terrorist attacks of 3/11 had on the economy of the region of Madrid. The evaluation has been made applying conservative criteria, and the results obtained have to be considered as minimum. The result indicates that the terrorist attacks caused a loss of nearly 212 million euros to the regional economy of Madrid, equivalent to 0.16 percent of the regional GDP (0.03 of the national GDP). This confirms that the immediate economic dimension of a terrorist attack such as the one of 3/11—apart from human catastrophic consequences—is relatively low.     

高等学校“概论”课开放式教学方式探索——“听、读、评、写、研”教学模式实践及启示

在“毛泽东思想和中国特色社会主义理论体系概论”课程教学中开展“听、说、读、评、研”教学活动,是深化教学改革,培养创新型人才的可行途径之一。在教学中结合课程内容让学生读一些相关的书目,搞一些同学们有兴趣又能参与其中的活动,使同学们在了解历史但又不脱离现实生活的状态下,既掌握了知识又活跃了课堂气氛,提高了同学们的理论素养以及分析问题和解决问题的能力,从而坚定在中国共产党的领导下走中国特色社会主义道路的理想信念。     

Arab Muslim Attitudes Toward the West: Cultural,Social, and Political Explanations

We utilize pooled data from Zogby International's 2002 Zogby, James. 2002. What Arabs Think: Values Beliefs and Concerns, Utica NY: Zogby International.  [Google Scholar] Arab Values Survey (carried out in Egypt, Jordan, Lebanon, Kuwait, Morocco, Saudi Arabia, and UAE) in order to test for “cultural,” “social” and/or international “political” influences on Arab Muslim attitudes toward “Western” countries (Canada, France, Germany, UK, and USA). We find little support for “cultural” hypotheses to the effect that hostility to the West is a mark-up on Muslim and/or Arab identity. We find only limited support for “social” hypotheses that suggest that hostility to the West is predicted by socioeconomic deprivation, youth, and/or being male. We find the strongest support for a lone “political” hypothesis: hostility toward specific Western countries is predicted by those countries' recent and visible international political actions in regard to salient international issues (e.g., Western foreign policies toward Palestine).     

Accuracy and Repeatability of Trajectory Rod Measurement Using Laser Scanners

Three‐dimensional (3D) technologies contribute greatly to bullet trajectory analysis and shooting reconstruction. There are few papers which address the errors associated with utilizing laser scanning for bullet trajectory documentation. This study examined the accuracy and precision of laser scanning for documenting trajectory rods in drywall for angles between 25° and 90°. The inherent error range of 0.02°–2.10° was noted while the overall error for laser scanning ranged between 0.04° and 1.98°. The inter‐ and intraobserver errors for trajectory rod placement and virtual trajectory marking showed that the range of variation for rod placement was between 0.1°–1° in drywall and 0.05°–0.5° in plywood. Virtual trajectory marking accuracy tests showed that 75% of data values were below 0.91° and 0.61° on azimuth and vertical angles, respectively. In conclusion, many contributing factors affect bullet trajectory analysis, and the use of 3D technologies can aid in reduction of errors associated with documentation.     

Controversial Suicide Case Using a Submachine Gun with a Sound Suppressor—The Need of Team Work of Forensic Chemistry and Firearm Examiners

Evidence materials in a presumed suicide case were studied by a firearm examiner and a forensic chemist. The victim's body with double gunshot wounding in his forehead, a machine gun in the sustained fire mode with a silencer, and four cartridge cases were found. Examinations of the evidence, the case file studies, and experiments dedicated to the case were carried out. Relationships between the placement of cartridge cases and the gun were established using a fast camera. The distributions of gunshot residues on the evidence materials and within the comparative gunshot patterns were studied by means of optical and electron microscopy, X‐ray microanalysis, and infrared spectroscopy. The shooting distance was assessed to be 30 cm or more, whereas the greatest distance that could have been achieved by the victim himself was about 11–13 cm. The obtained results supported the version of homicide rather than suicide.