毛发中海洛因及其代谢物的分析综述

对毛发中海洛因及其代谢物—6-单乙酰吗啡和吗啡的提取和检测分析进行了综述。其分析方法大致为6步:收集毛发,清洗毛发,分段,剪(磨)碎毛发,水解,提取净化,检测分析。     

头发对射击残留物附着的影响

利用射击残留物的存在和分布形态判断枪口与射入口的距离是现场分析的关键之一。然而我们在工作中发现,在对头部射击的案件中,弹孔周围的头发有可能对射击残留物起到屏蔽作用,尤其在贴近距离[1](2cm~5cm左右)射击的时候,绝大部分射击残留物会附着在头发而不是头皮上,本文将以实验和真实案例为基础详细说明近距离射击时头发对射击残留物附着的影响。     

英汉颜色词的国俗语义对比与文化教学

词语所承载的意义不仅包含它的概念意义,还包含它的社会文化色彩和情感内涵。国俗语义是语义民族性的一种表现。英汉两种语言中颜色词语的国俗语义相同性很小。英汉颜色词语在社会属性、情感和心理方面存在差异,英汉颜色词语国俗语义缺项。     

Commentary

Abstract

Women prisoners make up a small percentage of the prison population, yet they are the fastest growing population in prison, especially among women of color. Many of these women are typically young, poor, and uneducated mothers, and they often encounter an assortment of social and health problems while incarcerated. This commentary examines some of the issues that predispose women of color to commit crimes and the challenges they face in the New York State prison system.     

解读西南少数民族崇尚的色彩语言—"黑"

色彩语言是指人类社会中作为信息传递手段的色彩和意义结合的符号系统。西南不少民族崇尚黑色,以黑为美,以黑为贵,就在于色彩语言中的"黑"能传递出他们所企盼的信息。影响民族尚黑习俗形成的因素是复杂多样的,主要有三大因素:一是西南地区特有的自然环境和生产方式;二是原始宗教;三是历史上的文化接触与融合。但民族尚黑习俗的形成并不要求这三大因素必须同时起作用。     

Listening to color: a set of propositions on pain as feminist aesthetic

This performative text asks whether it is possible to imagine an antisocial feminist aesthetic that does not invoke the wounded body. Its form – numbered propositions that engage with critical theory, literature, and memoir – riffs on that of Maggie Nelson’s Bluets, a key interlocutor for this question of aestheticizing embodied pain. How does Nelson’s genealogy of blue model a methodology for a “queer genealogy of femininity,” to borrow Jack Halberstam’s term? How does looking at color in this way offer an approach to narrating trauma, one that displaces the primacy of the visual? Turning to the work of Christina Crosby, Toni Morrison, Fred Moten, and José Esteban Muñoz, as well as drawing upon the author’s experience as a volunteer for a peer listening hotline, this essay considers the implications of “listening to color” for minoritarian knowledge formations and feminist praxis.     

Hair as a specimen to document tetramethylene disulfotetramine exposure

Tetramethylene disulfotetramine (tetramine) is a rodenticide that has been banned for many years in China. Since 2005, inhabitants of a village in the Henan Province have been suffering from grand mal seizures. To investigate the possibility of tetramine as the cause, we developed a method to determine tetramine in human hair. Sample preparation involved external decontamination, frozen pulverization, and ultrasonication in 2 mL ethyl acetate in the presence of cocaine-d3 as an internal standard. The method exhibited good linearity; calibration curve was linear over a range of 0.1-20 ng/mg hair. The limit of detection for the assay was 0.05 ng/mg hair. Except for one subject (No. 4), all head and pubic hair samples were positive for tetramine. The concentrations of tetramine in pubic hair were significantly higher than those in the same subjects' head hair samples. Because of a long retention in body, segmental head hair analysis cannot provide an accurate exposure history of tetramine in the body.     

内蒙古乌盟六号辽墓契丹族古尸研究

1981年11月,内蒙乌盟出土一具距今约900年的契丹族女性干尸。头戴鎏骨金面具,身套铜丝网络,尸体外形保存较完整。全身骨骼完好,其主要化学组成为钙和磷。内脏呈棕黑色粉末状。肺如干枯的树叶紧贴于左右胸腔后壁。显微镜下可见肺泡及间质的轮廓和细菌芽孢。腹膜虽已干枯,但仍呈半透明状,并可见血管网的痕迹。其余内脏不能辨认。胃区组织中检出大量的砷。关于古尸保存的原因,本文也进行了分析。     

同一个体发毛角蛋白电泳谱型的分析

用SDS -PAGGE对收集到的 2 0例人体表毛发 (头发、阴毛、腋毛、腿毛 )角蛋白组分进行了分析。结果表明 ,同一个体毛发角蛋白电泳谱型基本相同 ,用激光光密度仪对电泳凝胶板扫描后证实 ,同一个体毛发角蛋白组分相对百分含量也无明显差异 ;人头部不同部位 (顶部、左侧、右侧、额部、枕部 )头发角蛋白的电泳谱型和角蛋白组分相对百分含量也基本相同。同一个体毛发角蛋白组分的分析 ,可为法医物证学鉴定中的毛发个人识别提供重要的依据。     

常见蔬菜、调料、空白脏器对硫靛反应化学检验氟乙酰胺干扰的实验研究

氟乙酰胺类鼠药(含氟乙酸,氟乙酸钠)是水溶性毒物,极性大,毒性也大.中毒死亡后在体内含量呈微.人及动物死亡后,难以用常见的TLC方法进行分析.几年来,经改进后的硫靛反应化学法,一直在各实验室办案中应用.该法对氟乙酰胺类鼠药中毒案件鉴定起了很大作用.但经过多年的研究实验及案件应用,笔者认为硫靛反应不是氟乙酰胺鼠药的专属性反应,有干扰,方法灵敏度低.仅靠该法出现阳性结果和阴性结果,均不能对检材作肯定或否定结论,应配合其它方法或案情进行综合评价.