Investigations concerning the threshold value between endogenous and exogenous GHB (liquid ecstasy)

The article describes critical investigations concerning the threshold value between endogenous and exogenous concentrations of gamma-hydroxybutyric acid (GHB/"liquid ecstasy") in human blood. The values of GHB in the blood samples of 50 blood donors and 50 postmortem cases were measured with a validated gas-chromatographic/mass-spectrometric procedure according to the guidelines of the GTFCh (Society of Toxicological and Forensic Chemistry). GHB-concentrations were found to range between 0.11 and 1.56 mg/L (mean value 0.54 mg/L/standard deviation 0.37 mg/L/coefficient of variation 68.4 %) in the donors' blood, and between 2.2 and 116 mg/L (mean value 32.4 mg/L/standard deviation 25.6 mg/L/coefficient of variation 79 %) in the postmortem samples, respectively.     

Le chevauchement des programmes fédéraux et provinciaux: un bilan

Sommaire: Après avoir montré que le chevauchement des programmes fédéraux et provinciaux est une caractéristique fondamentale de l'activité gouvernementale au Canada et qu'il a son origine dans les dispositions de la Constitution, cette étude présente une évaluation qualitative de ses conséquences quant à l'efficience et à l'efficacité du système politico-administratif canadien. Ces conséquences sont envisagées sous l'angle du coût de l'action gouvernementale, de l'efficacité des politiques publiques, du fardeau imposé aux administrés en matière de transactions avec l'État et de la portée du principe de la responsabilité politique des gouvernants envers la population. Vue dans cette perspective, la duplication des activités fédérales et provinciales apparaît comme une source d'inefficience et d'inefficacité pour la gestion des affaires publiques. Elle justifie qu'on s'interroge sérieusement sur la valeur du partage actuel des pouvoirs entre les deux ordres de gouvernement. Abstract: After showing that the overlap between federal and provincial programs is a basic characteristic of government activity in Canada rooted in the provisions of the constitution, this study presents a qualitative assessment of its consequences for the efficiency and effectiveness of the Canadian political-administrative system. These consequences are viewed from the viewpoint of the cost of government action, of the effectiveness of public policy, of the burden the administered face in dealing with governments, and of the scope of governmental political accountability to the people. From this angle, the duplication of federal and provincial activities appears to be a source of inefficiency and ineffectiveness in the management of public affairs. It raises serious questions as to the adequacy of the present sharing of powers between the two levels of government.     

Surface Modification for the Collection and Identification of Fingerprints and Colorimetric Detection of Urea Nitrate

Glass surfaces were modified with a combination of dyes and reagents to allow for the potential simultaneous recording of a detailed fingerprint and the detection of the explosive urea nitrate (UN), as a proof of principle of surface modification for simultaneous linking of identity to manipulation of explosives. By coating microscope slides with 9,10‐diphenylanthracene (DPA), p‐dimethylaminobenzaldehyde (p‐DMAB) and p‐dimethylaminocinnamaldehyde (p‐DMAC), a colorimetric change was observed in the presence of UN, while revealing a fingerprint with enough resolution to isolate at least 10 minutiae. This is the first step in creating point‐of‐care devices capable of detecting low concentrations of explosives and drug metabolites and connecting them to a fingerprint.     

Application of 3D documentation and geometric reconstruction methods in traffic accident analysis: with high resolution surface scanning, radiological MSCT/MRI scanning and real data based animation

The examination of traffic accidents is daily routine in forensic medicine. An important question in the analysis of the victims of traffic accidents, for example in collisions between motor vehicles and pedestrians or cyclists, is the situation of the impact. Apart from forensic medical examinations (external examination and autopsy), three-dimensional technologies and methods are gaining importance in forensic investigations. Besides the post-mortem multi-slice computed tomography (MSCT) and magnetic resonance imaging (MRI) for the documentation and analysis of internal findings, highly precise 3D surface scanning is employed for the documentation of the external body findings and of injury-inflicting instruments. The correlation of injuries of the body to the injury-inflicting object and the accident mechanism are of great importance. The applied methods include documentation of the external and internal body and the involved vehicles and inflicting tools as well as the analysis of the acquired data. The body surface and the accident vehicles with their damages were digitized by 3D surface scanning. For the internal findings of the body, post-mortem MSCT and MRI were used. The analysis included the processing of the obtained data to 3D models, determination of the driving direction of the vehicle, correlation of injuries to the vehicle damages, geometric determination of the impact situation and evaluation of further findings of the accident. In the following article, the benefits of the 3D documentation and computer-assisted, drawn-to-scale 3D comparisons of the relevant injuries with the damages to the vehicle in the analysis of the course of accidents, especially with regard to the impact situation, are shown on two examined cases.     

中国网络治理的社会符号学阐释

网络治理是一项复杂系统的社会工程,符号学因其系统性可为网络治理构建和完善提供学理支撑。网络治理和网络空间作为社会符号具有时空性和社会性,其意义会随着历史的变迁和解释主体的不同而变化,主要受历史条件、网络治理实践和国家利益等语境因素的制约。网络空间命运共同体和网络主权是中国网络治理符号系统的重要组成部分,要不断推动其从价值独特性符号向价值共识性符号的转变,即既保持中国特色,又获得国际社会的普遍共识。此外,结合马克思主义哲学理论,中国网络治理具有时代性、人民性、科学性、实践性和全球性,是马克思主义在网络空间治理领域的中国实践,是历史符号在新时代的全新阐释。