单芯电缆线断头痕迹实物提取方法

目的研究单芯电缆线这种离散型客体的实物提取方式、涉及的提取工具和最佳提取长度。方法采用模拟实验的方式,选用不同种类的单芯电缆线为客体,以电缆线断头痕迹不发生变化为基准,确定不同实物提取方式或不同种类工具提取单芯电缆线的最短长度。结果单芯电缆线实物提取可采取的方式主要有钳剪和割削两种,其中钳剪提取方式使用的工具为断线钳和线缆剪,割削提取方式使用的工具为钢锯和角磨机;针对直径小于16mm、非金属外护套及绝缘层的单芯电缆线,断线钳剪切提取最佳长度约为55cm,线缆剪剪切提取最佳长度约为70cm,钢锯锯割提取最佳长度约为5cm,角磨机切削提取最佳长度约为5cm。结论割削提取方法是提取电缆线断头的最佳方法;依据提取操作简便性及快捷性,角磨机(或充电式角磨机)为现场提取电缆线断头的最佳工具。     

用羊角锤撬压形成线形痕迹的检验

目的介绍羊角锤起钉槽撬压形成擦划痕迹的检验方法。方法痕迹整体分析及特征接合。结果具备同一认定条件。结论通过了解羊角锤的结构特点和功能,综合分析撬压时形成痕迹的作用关系,按照现场环境条件制作样本,可以进行同一认定。     

牙损伤的法医临床学鉴定

通过对健康牙齿与非健康牙齿损伤程度的法医临床学鉴定分析。综合牙齿本身的质量、临床治疗因素、个体因素等方面。依据《人体轻伤鉴定标准（试行）》及《人体重伤鉴定标准》的有关规定。有助于准确、科学地得出客观的鉴定结论。     

中性笔及其字迹色痕检验

利用中性笔作为书写工具实施变造文件的案件呈明显上升趋势,中性笔字迹色痕检验尤显迫切。中性笔笔痕检验包括笔痕特征法和笔法宽度测量法,中性笔字迹色痕检验包括无损检验法和有损检验法。     

Swiss trade marks practice on misleading geographical indications

Legal context: Geographical references in trade marks are often used not onlyto refer to a certain territory of origin for certain goodsor services, but also to evoke desirable associations, imaginations,emotions, or ideas. The strict practice of the Swiss Trade MarksOffice often requires applicants to limit their list of goodsand services to certain countries. Key points: This abstract discusses the issues of geographically suggestivetrade marks in Switzerland, the strict test used by the SwissTrade Marks Office often requiring the applicant to limit thelist of goods to a specific country, the new stance the formerAppeals Board took in this regard, and how it was struck downby the Swiss Supreme Court, confirming the strict test of theTrade Marks Office. Finally, the article gives a solution onhow the issue of geographical references in trade marks shouldbe treated in order to match reality. Practical significance: It is important to know that the Swiss Trade Marks Office appliesa strict test when it comes to geographical references in trademarks. Usually, the applicant is required to limit the listof goods, although it is questionable whether the trade markreally suggests that the goods stem from a certain country.Foreign decisions are not binding for the Swiss Trade MarksOffice and in this regard usually disregarded.     

6种现场常见断线钳加工特征的研究

目的研究不同品牌断线钳加工特征的差异性及痕迹反映与加工特征之间的关系。方法以6种现场常见断线钳为研究对象,首先观测断线钳的刃顶厚度、刃片咬合间隙、刃侧铣纹宽度和铣纹间距等参数,然后观测剪切断头痕迹的立顶高度、立顶厚度、刃侧铣纹印痕宽度和铣纹印痕间距等参数,并用SPSS统计软件进行处理。结果 6种品牌的断线钳加工特征存在差异,断头痕迹可以稳定地反映该差异。结论可利用断头痕迹特征推断断线钳种类。     

Crack Propagation in Teeth: A Comparison of Perimortem and Postmortem Behavior of Dental Materials and Cracks*

Abstract: This study presents a new method for understanding postmortem heat-induced crack propagation patterns in teeth. The results demonstrate that patterns of postmortem heat-induced crack propagation differ from perimortem and antemortem trauma-induced crack propagation patterns. Dental material of the postmortem tooth undergoes dehydration leading to a shrinking and more brittle dentin material and a weaker dentin-enamel junction. Dentin intertubule tensile stresses are amplified by the presence of the pulp cavity, and initiates crack propagation from the internal dentin, through the dentin-enamel junction and lastly the enamel. In contrast, in vivo perimortem and antemortem trauma-induced crack propagation initiates cracking from the external surface of the enamel toward the dentin-enamel junction where the majority of the energy of the crack is dissipated, eliminating the crack’s progress into the dentin. These unique patterns of crack propagation can be used to differentiate postmortem taphonomy-induced damage from antemortem and perimortem trauma in teeth.     

签字笔书写笔痕特征的实验分析

目的为准确掌握签字笔书写笔痕特征的变化规律，以求将其运用于案件鉴定。方法通过对同一人执不同签字笔、不同人执同一支签字笔及同一人执同一支签字笔书写笔痕分别进行实验分析。结果证实前二种情况下笔痕特征具有相互区别的特定性，后一种情况下笔痕特征具有重复再现的稳定性。     

Blood and Tissue Spatter Associated with Chainsaw Dismemberment

Abstract:  In response to the unexpected paucity of blood/tissue spatter at the site where a body of an adult woman was dismembered by an electric chainsaw, we dismembered two large pig carcasses with a small electric chainsaw in a controlled environment. These experiments demonstrated first that a large carcass could be easily dismembered by a small electric chainsaw. When the chainsaw bar is held parallel to the ground the majority of the blood and tissue is deposited directly beneath the saw and bar and very little elsewhere. If the discharge chute of the saw however is not oriented directly at the ground, larger amounts of blood and tissue may be sprayed on lateral surfaces or deposited some distance from the chainsaw. The characteristic striations created on the surface of wood as it is cut by a chainsaw can also be found on bony surfaces cut by a chainsaw.