Aging studies on fingerprint residues using thin-layer and high performance liquid chromatography

The chemical substances of perspiration found in latent fingerprint residue may hold the key for dating latent fingerprints. To study the chemical transformations of these components as a function of time and environment, fingerprint residues from four males and four females were analysed by thin-layer chromatography (TLC) and high performance liquid chromatography (HPLC). Three major and two or three minor components were detected by both methods and the variation in the quantity of the major components with time was observed.     

Sudden death due to unsuspected coronary vasculitis.

Coronary artery vasculitis is a well-recognized complication of polyarteritis nodosa and is occasionally seen in other forms of systemic vasculitis. However, involvement of the major epicardial coronary arteries leading to myocardial infarction and death is uncommon. Isolated coronary arteritis is even more rare. We report three cases of sudden death due to myocardial ischemia associated with arteritis of the major coronary arteries. All three decedents were previously healthy young to middle-aged men who had died suddenly after complaints of chest pain and shortness of breath. The autopsy findings and differential diagnoses are presented. Such cases are of particular interest to the medical examiner because of the sudden, unexpected nature of the deaths. An approach to the correct diagnosis is discussed.     

Young Chinese consumers' brand perception; the role of mianzi as moderator

The basic purpose of this study was to investigate the role of exposure and past experience on consumers' brand perception, as mediated by three variables (perceived quality, brand recall, and satisfaction) and moderated by mianzi. Using data collected from a survey of 331 customers, brand perception models for two diverse kinds of products (high and low involvement) were tested. SmartPLS structural equation modeling was applied to produce models for both types of products. Exposure and experience significantly influences brand perception in different product categories, which suggests that customers perceive both high and low involvement. Our study also established that mianzi has a significant moderating role in high‐involvement product category. Ultimately, the findings suggest significant differences in the brand perception of product types with respect to mianzi and the mediational role of perceived quality and satisfaction, providing a structure for future research on brand perception.     

VEP验光方法在常见眼外伤矫正视力检测中的应用研究

目的通过比较VEP验光、电脑验光及主觉插片验光在检测外伤眼屈光度中的关系,探讨VEP验光方法在外伤眼矫正视力中的应用价值。方法本组实验选取各种类型眼外伤患者,伤后3～6月经检查存在视力下降者61人(受检眼61只),分别对伤眼行电脑验光、主觉播片验光及VEP验光,比较三种验光方法所测屈光度及矫正视力之间的差异性。结果经统计学处理,VEP验光与主觉插片验光所测伤眼屈光度和矫正视力无显著性差异(P>0.05);电脑验光与主觉验光、VEP验光在球镜屈光度检查上存在显著性差异(P<0.05),在散光检查方面无明显差异(P>0.05);电脑验光所得矫正视力与主觉插片验光、VEP验光所得结果之间均存在显著性差异(P<0.05),尤其在角膜、虹膜睫状体、晶状体、玻璃体等部位损伤的受检眼中差异更为显著(P<0.01)。结论电脑验光和VEP验光均是客观的屈光检查方法,前者有方便迅速的优点,但其结果存在较大误差,特别是在屈光系统损伤的患者中误差更大,仅可作为屈光矫正的初步检查依据;而后者验光结果准确,能够反映伤眼的屈光实际情况,可以应用于法医学鉴定中的伤眼最佳矫正视力的评定。     

试论我国知识分子的历史定位

本文围绕知识分子的历史定位 ,即他们在当今我国社会发展中的社会地位这个主题 ,揭示了建国后党对我国知识分子社会地位的认识实现了两次历史性飞跃的历程和意义 ,从理论和现实的结合上论证了知识分子在我国社会主义现代化中的重要作用和光荣使命。     

数字化生存与网络法治建设——高校BBS用户注册实名制批判

网络数字化时代的来临,对传统法律提出了变革的要求.本文在对一例高校BBS用户注册实名制弊端分析和批判基础上,提出了数字化生存时代如何构建网络法治的问题,较为详细地分析了网络立法的基本原则、模式选择.     

Toxicological findings in a multi-drug death involving propoxyphene, caffeine, phenacetin, acetaminophen and salicylate

The toxicological findings of a multi-drug related fatal poisoning are described here. A 35-year-old Caucasian male found dead on the kitchen floor was a known user of abused drugs and had been taking aspirin alone or in combination with phenacetin and caffeine for the relief of joint pains. The gross examination of the organs at autopsy revealed slight grooving of the uncus and various stages of necrosis in the renal papillae. Histological examination confirmed the gross appearance of pulmonary congestion and edema, cerebral edema and interstitial nephritis of the tubules. Toxicological evaluation of the blood and urine samples disclosed the presence of propoxyphene (51 and 250 mg/l), salicylate (185 and 2750 mg/l), caffeine (16 and 37 mg/l), and phenacetin (9.6 and 20 mg/l). Furthermore, acetaminophen also was present in the plasma (54 mg/l) and urine. A gas liquid chromatographic method for simultaneous analysis of phenacetin and caffeine utilizing a nitrogen phosphorus detector was proposed.