The killer outfit and timing: Impact of the fabric and time in body fluid identification and DNA profiling

The present work aimed to study the detection, through lateral flow immunochromatographic (LFI) tests, of saliva samples over time in three different types of fabrics, as well as, the possibility of DNA isolation and characterization from the sample tubes and the cassettes. Fifty microliters of saliva (three samples/time) were deposited in denim, cotton, and polyester. Saliva was identified by SERATEC® Amylase Test and the Crime Scene version SALIVA CS, being able to detect it up to six months of deposition, although with different band intensities. Polyester showed stronger bands than cotton, probably due to its synthetic nature, and denim, as an inked fabric, showed less band intensities. Statistical analyses confirmed significant differences among fabrics, but not over time in the same type of fabric. Total DNA from the sample tubes was successfully recovered, in contrast, from the cassettes, only polyester retrieved amplifiable DNA. These findings indicated that it is possible to recover and identify saliva up to six months after deposition, also obtaining DNA. Future research will be able to expand these results, analyzing the stability of other body fluids, and the sensitivity of lateral flow immunochromatographic tests to detect them.     

Forensic Analysis of MTBE Contamination Using Basic Hydrogeologic Concepts

Contamination of groundwater with petroleum hydrocarbons and additives, such as methyl tert‐butyl ether (MTBE), is often linked to the leaking product distribution system of gas stations. In very few cases is it know if and when a leak occurred and how much product was released to the environment. In the absence of direct evidence, a careful analysis of the available data, such as contaminant breakthrough at receptor wells or discrepancies in the product inventory data, may provide evidence about the nature of the release, its timing and magnitude. Using a MTBE contamination site in the formerly glaciated New England region as an example, two possible release scenarios (slow, long‐term release vs. spill) were examined. Of the two scenarios, the slow release could be ruled out as the sole source even though there was no direct evidence for a spill. The analysis of hydraulic test results together with chemical data further permitted to estimate when such an undocumented spill might have occurred. Analyses of the data also allowed these results to be compared to that of a prior transport and fate modeling study. Good agreement and consistency for contaminant travel times was confirmed. This forensic analysis demonstrates that applying basic hydrogeologic principles can aide in the reconstruction of contamination events while providing more readily understandable and defendable evidence relative to complex models. Conceptually, the approach described herein is transferable to other sites with similar hydrogeologies.     

缺血性中风气虚血瘀证动物模型的初步研究

选用中老龄大鼠，采用饥饿、劳累、高脂饮食、结扎左侧侧颈总动脉的方法，制作缺血性中风气虚血瘀证模型。通过对一般体征、局部脑组织血流量、脑水肿、血液流变学、血浆血栓素Ａ２（ＴＸＡ２０、前列环素（ＰＧＩ２）的观察。结果表明：模型鼠出现偏瘫症状；脑组织含 显著增高，脑水肿明显；ｒＣＢＦ显著增高，ＰＧＩ２显著降低，血液呈高度浓、粘、凝、聚状态。符合缺血性中风气虚血瘀证的临床特点。     

关于促进欠发达地区人才流动的思考

人才是一个国家经济和社会发展的重要战略资源,更是经济欠发达地区摆脱贫困、实现跨越式发展的关键。人才流动无论是在国家之间还是地区之间,都是加快人力资本积累进而促进经济社会发展的一个重要机制,是市场经济发展客观规律的必然要求。本文分析了欠发达地区人才流动的重要性及影响人才流动的不利因素,提出了促进欠发达地区人才流动的建议,即以经济结构转变吸引人才,以高质量社会服务水平支持人才流动,以政府政策导向引导人才流动。     

海峡两岸资本琉动现状与问题分析

顺应国际国内经济区域化的潮流,建设海峡西岸经济区。在这一发展战略指导下,加强两岸的金融合作与交流显得尤为重要。文章着重分析了海峡两岸资本流动的现状及存在的问题,并提出几点促进海峡两岸资本项目领域合作与发展的政策建议。     

“源”与“流”：关于马克思主义中国化内涵的解读

马克思主义有原生形态与次生形态之分.原生形态马克思主义是"源",次生形态马克思主义是"流".马克思主义中国化语境中的"马克思主义"指的是原生形态的马克思主义.马克思主义中国化是马克思主义获得中国形态和内容与转换中国传统文化和人类其它优秀文明成果两个过程的汇合,其结果是中国化的马克思主义.中国化的马克思主义还有着一个自身理论流变的问题.中国化的马克思主义对马克思主义起到了丰富和发展的作用.     

对构建再就业社会流动机制的几点认识

构建合理的再就业社会流动机制,必须坚持动态协调的原则,调整产业结构,尽快推进制度改革,加强区域劳务协作,使更多的失业下岗人员走上再就业之路。     

骨蚀宁对激素性股骨头坏死家兔局部rBF、TNF及显微结构的影响

目的：探讨骨蚀宁治疗激素性股骨头坏死的作用机制.方法：选择马血清与甲基强的松龙造成兔激素性股骨头坏死模型,设立对照组、模型组、仙灵骨葆组、骨蚀宁组,测定其血中局部组织血流量（rBF）、肿瘤坏死因子（TNF）,同时取骨在光镜下进行常规病理检查观察.结果：与模型组比较,仙灵骨葆组与骨蚀宁组rBF明显升高（P＜0.01）,但两组之间无明显差异（P＞0.05）.与模型组比较,仙灵骨葆组与模型组TNF含量差别不大（P＞0.05）,而骨蚀宁组升高明显,差异有显著性（P＜0.05）.与仙灵骨葆组比较,骨蚀宁组TNF明显降低,差异有显著性（P＜0.05）.与模型组比较,仙灵骨葆组和骨蚀宁组空骨陷窝百分比均有减少,差异有显著性（P＜0.01）.但均未达正常,组间比较无显著性差异（P＞0.05）.骨蚀宁组股骨头骨小梁和骨细胞的损害明显减轻.结论：骨蚀宁可通过改善股骨头局部组织血流量、抗炎性反应以及保护和促进骨细胞再生达到治疗激素性股骨头坏死的作用.     

现金流量表与财务状况变动表之比较

为了适应社会主义市场经济发展的需要,进一步与国际惯例接轨,财政部于1998年3月颁布了《企业会计准则———现金流量表》。现金流量表是一张非常有用的报表。八十年代末、九十年代初,世界上许多发达国家就已将之列为与资产负债表、损益表同等地位的基本财务报表。现金流量表与财务状况变动表比较,其区别主要是编制原则、统制对象资金分类,可比程度不同。     

电针对兔激素性股骨头坏死局部组织血流量的影响

目的:探讨电针治疗激素性股骨头坏死的作用机制.方法:选择30只家兔,随机分为对照组、模型组和治疗组,后两组复制激素性股骨头坏死模型.治疗组选用环跳、髀关、悬钟等穴位电针治疗.测定股骨头局部组织血流量,了解即时效应和2周后效应.结果:针刺后局部组织血流量即时效应显著减少(P<0.01),而经过2周治疗后局部组织血流量明显升高(P<0.01).结论:电针对兔激素性股骨头坏死的疗效与调整局部微循环有关.