Application of 3D Imaging Technology to Latent Fingermark Aging Studies

In most latent fingermark aging studies, two‐dimensional (2D) features are obtained from photo images, scans, or inked impressions. However, some relevant information is possibly being missed because fingermarks are three‐dimensional (3D) objects that age in all three dimensions. A feature that has not been carefully examined is how the height of ridges changes over time. In this report, a 3D imaging technology—called optical profilometry—is introduced as a tool for the visual examination of the aging process. Optical profilometry is a nondestructive technology that allows the visualization and data acquisition of unprocessed latent fingermarks. Detailed ridge images and spatiotemporal data were successively obtained on the x‐, y‐ and z‐axis, delivering 3D topographical information. OP was able to detect the loss of ridge heights over time. The feasibility of employing this technology to collect data on the aging process of ridges has been proven.     

Animation and multiple-choice questions as a formative feedback tool for legal education

Two-dimensional animation when combined with multiple-choice questions affords an interesting and innovative formative feedback tool for engaging law students in problem-based learning. This article investigates methods for making animation a more accessible medium for legal academics. The article also describes, evaluates and reflects upon the results of a focus group and a survey of online law student perceptions on the combined use of animation and multiple-choice questions as a formative feedback tool. Ethical issues involving delinquent and guilty clients were used as the context in which to describe an animation workflow and explore student attitudes to animation. A website was created within which animations created by academics were included to provide feedback to scaffold student understanding of legal ethics. Students viewed the animations as a very positive learning experience, in the sense of making the lesson more interesting to learn, assisting them to learn and help visualise the ethical problems. Student comments highlighted design features which, when refined, may improve the quality of both the animations and the student experience in studying law using animation.     

Supplementing the sunshine- what is the role of psychiatrists,particularly in a forensic context,in maintaining patients vitamin D levels?

Vitamin D has an integral role in maintaining calcium homeostasis in the blood. It is well established that prolonged and severe vitamin D deficiency leads to rickets in children and osteomalacia in adults. Increasing evidence indicates that deficiency has associations with a number of other physical and mental health conditions. Doctors should ensure that their patients have information so that they can make informed decisions about their health, be it their physical or mental health. Recent NICE guidelines on vitamin D recommend that health care professionals have a role in informing patients about vitamin D supplements. This is especially relevant for forensic psychiatrists, as their patients often fall into recognised at risk groups for lowered vitamin D levels. One could argue that patients who have long admissions in secure wards are a specific at risk group and that supplementation should be routine.     

肝豆汤调控NLRP3炎症小体抑制Wilson病模型神经炎症的机制研究

目的 通过观察肝豆汤对Nod样受体家族含pyrin结构域蛋白3(Nod-like receptor family, pyrin domain-containing protein 3,NLRP3)炎症小体的调控作用,探究其抑制Wilson病(Wilson’s disease, WD)模型神经细胞炎症损伤的机制。方法 体外实验中,采用CuCl₂诱导小胶质细胞(BV-2细胞)复制WD神经细胞损伤模型,并将BV-2细胞与海马细胞(HT-22细胞)条件培养,给予不同浓度肝豆汤含药血清。CCK-8法检测BV-2细胞及HT-22细胞活力,酶联免疫吸附法测定炎症因子水平,细胞化学法检测HT-22细胞乳酸脱氢酶(lactate dehydrogenase, LDH)漏出水平及氧化应激水平,Western blot法检测NLRP3炎症小体相关蛋白表达水平。体内实验中,以TX小鼠为模型组,并以DL小鼠为正常组,肝豆汤组给予TX小鼠肝豆汤灌胃4周。采用Barnes迷宫、旷场实验、高架十字实验观察小鼠行为,苏木精—伊红染色法观察小鼠海马组织的损伤程度,Western blot法检测NLR...     

3D forensic facial approximation: Implementation protocol in a forensic activity

The primary objective of this paper is to report on the successful implementation of forensic facial approximation in a real case in the forensic context. A three‐dimensional (3D) facial approximation protocol of the skull was performed with free software, applying techniques in a virtual environment that have already been consolidated in the literature. The skull was scanned with the photogrammetry technique, the digital replica was imported in the Blender software (Blender Foundation, Amsterdam) and individualized model sketches of the face were traced with the MakeHuman software (MakeHuman Org) according to the anthropological profile of the victim. The face created was imported in Blender, where it was adapted, modeled, and sculpted on the 3D skull and its soft tissue markers, using an American open‐source application of the technique in the digital environment. The face created in a virtual environment was recognized and legal identification procedures were started, resulting in the more agile delivery of the disappeared body to its next of kin. It is therefore concluded that facial approximation may not be a primary method of human identification, but it can be satisfactorily applied in the forensic field as an individual recognition resource. It has great value in narrowing the search, reducing the number of alleged victims, and leading to identification tests, therefore significantly reducing the number of genetic DNA (deoxyribonucleic acid) tests—which are considered costly for the State or Federation—and consequently reducing the waiting time before delivery of the body to its family.     

渤海油田漏油事故法律问题分析

渤海油田漏油事故造成了极为严重的环境污染,对海洋生态环境、海洋资源均产生严重影响。在此事件中,海洋局并未及时主动公开这一突发性的环境污染事件,应依法承担相应的行政责任,而事故责任人应承担相应的民事责任,包括但不限于清理油污、赔偿海洋生态损害、渔业资源损害、渔民损失等,海洋局和渔业部门可代表国家对事故责任人提供环境民事公益诉讼。检察机关亦应追究事故责任人的刑事责任。     

Personal identification by the comparison of facial profiles: testing the reliability of a high-resolution 3D-2D comparison model

Identification from video surveillance systems is frequently requested in forensic practice. The "3D-2D" comparison has proven to be reliable in assessing identification but still requires standardization; this study concerns the validation of the 3D-2D profile comparison. The 3D models of the faces of five individuals were compared with photographs from the same subjects as well as from another 45 individuals. The difference in area and distance between maxima (glabella, tip of nose, fore point of upper and lower lips, pogonion) and minima points (selion, subnasale, stomion, suprapogonion) were measured. The highest difference in area between the 3D model and the 2D image was between 43 and 133 mm(2) in the five matches, always greater than 157 mm(2) in mismatches; the mean distance between the points was greater than 1.96 mm in mismatches, <1.9 mm in five matches (p < 0.05). These results indicate that this difference in areas may point toward a manner of distinguishing "correct" from "incorrect" matches.     

Interaction of 3,4-methylenedioxymethamphetamine and methamphetamine during metabolism by in vitro human metabolic enzymes and in rats

Illicit amphetamine-type stimulant (ATS) tablets commonly contain one or more active ingredients, which have hallucinogenic and/or stimulant effects. Because components such as 3,4-methylenedioxymethamphetamine (MDMA) and methamphetamine (MA) in ATS tablets have similar chemical structures, they could be metabolized by common metabolic enzymes. To investigate potential metabolic interactions of ATS tablet components, we studied the in vitro metabolism of MDMA and MA using human metabolic enzymes. MDMA and MA were mainly metabolized by cytochrome P450 2D6 (CYP2D6) and mutually inhibited the production of their main metabolites. In vivo experiments were also performed using intravenous administration of MDMA, MA, or their mixture to rats. The plasma concentrations of MDMA and MA after co-administration were higher than those after administration of MDMA or MA alone. The results in this study imply that multiple components in ATS tablets can interact to mutually inhibit their metabolism and potentially enhance the toxicity of each component.     

Comparison of bulk and compound-specific δ13C isotope ratio analyses for the discrimination between cannabis samples

Five marijuana samples were compared using bulk isotope analysis compound-specific isotope ratio analysis of the extracted cannabinoids. Owing to the age of our cannabis samples, four of the five samples were compared using the isotope ratios of cannabinol (CBN), a stable degradation product of Δ(9)-tetrahydrocannabinol (THC). Bulk δ(13)C isotope analysis discriminated between all five samples at the 95% confidence level. Compound-specific δ(13)C isotope analysis could not distinguish between one pair of the five samples at the 95% confidence level. All the measured cannabinoids showed significant depletion in (13)C relative to bulk isotope values; the isotope ratios for THC, CBN, and cannabidiol were on average 1.6‰, 1.7‰, and 2.2‰ more negative than the bulk values, respectively. A more detailed investigation needs to be conducted to assess the degree fractionation between the different cannabinoids, especially after aging.