生物样品中杀鼠迷(Coumatetralyl)液相色谱检测的实验研究

本文经实验研究,确定了在酸性条件下用氯仿作为萃取剂,萃取液经酸性氧化铝柱净化,分段收集冼脱液的方法,使杀鼠迷回收率在不低于70%的基础上,脂肪及其它杂质近乎完全清除。杀鼠迷的检测采用高效液相色谱法(HPLC),紫外检测灵敏度达10~(-9)g。并对杀鼠迷中毒家兔的尿液进行了分析,发现一次性服用20mg/kg 体重的家兔,在45h 的尿液中,尚能检出其原形物。     

在历史与现实之间——关于西部地区哲学现状的断想

在当代,我国西部地区的哲学现状及其发展与国内其它经济和文化发达的地区相比存在一定差距。作为一种文化现象,造成西部地区哲学滞后的原因,既要从物质生产状况和经济发展的方面去分析,也要研究历史的、文化传统的、学术传统的诸多因素的原因。     

浅谈查缉战术模拟实战训练的组织与实施

模拟实战训练在查缉战术教学中起着至关重要的作用,在组织模拟实战训练时要制定好计划,在实施时,注意安全,还要积极开展教学总结。     

对我国欠发达地区农业劳动力转移的几点思考

欠发达地区农业劳动力转移具有重要意义和特有形式。欠发达地区农业劳动力转移具有诸多制约因素。只有针对制约因素,采取相应对策,才能较好地实现欠发达地区农业劳动力的转移。     

小鹅瘟病毒荧光抗体的制备与应用

将小鹅瘟病毒 (GPV )分离毒xw株接种健康兔获得兔抗GPV超免疫血清 ,由此制备兔抗GPV荧光抗体。采用直接荧光抗体试验对人工感染雏鹅、鹅胚及自然病例进行了检测。结果表明 ,该方法可检出患病组织中的病毒抗原 ,且肠和肝的含毒量高于尿囊细胞。     

网络攻击追踪方法的技术分析与实现模型

本文分析了IP地址追踪方法,结合现有的入侵检测技术提出了网络攻击源追踪系统的模型,阐述了该系统的体系结构和各部分的主要功能,给出了利用相关性分析对攻击者的攻击路径进行回溯的基本思想,对网络安全管理具有一定的借鉴意义。     

猪附红细胞体PPA-ELISA检测方法的建立

用物理方法纯化猪附红细胞体抗原,用纯化抗原免疫兔制备超免疫血清,以辣根过氧化物酶标记葡萄球菌A蛋白作为二抗,建立了辣根过氧化物酶标记葡萄球菌A蛋白的酶联免疫吸附试验(PPA ELISA)检测方法。结果显示,用PPA ELISA方法检测猪血液中的附红细胞体,具有很高的敏感性和特异性,重复性良好,完全适用于猪附红细胞体病的实验室诊断。     

移植时间和检测方法与allo-HSCT受者的DNA嵌合率及法医学意义

影响allo-HSCT受者DNA嵌合率的因素有很多:如受者的疾病类型、移植前预处理方案、移植时病情的严重程度、造血干细胞来源、局部的GVHD、HLA是否相合等。本文主要讨论与法医学关系最为密切的2个影响因素,即移植后时间和检测方法的灵敏度。法医物证学工作者在检案实践中,对allo-HSCT受者进行亲权鉴定或个体识别时,需注意移植后时间和检测方法的灵敏度对嵌合率的影响。女性受者接受男性供者HSCT的情况下,受者毛囊中可以检出供者Y染色体DNA,检案实践中来源于犯罪现场的生物检材不能仅仅检测Y染色体特异遗传标记,以免导致错误判断。     

Seeing is believing: observer perceptions of trait trustworthiness predict perceptions of honesty in high-stakes emotional appeals

Instantaneous first impressions of facial trustworthiness influence the manner in which observers evaluate ensuing information about stranger targets [e.g. Porter, S., &; ten Brinke, L. (2009). Dangerous decisions: A theoretical framework for understanding how judges assess credibility in the courtroom. Legal and Criminological Psychology, 14, 119–134. doi:10.1348/135532508X281520]. In two studies, we examined the association between perceptions of general trustworthiness and honesty assessments in an extremely high-stakes sample – individuals publicly pleading for the return of a missing relative, half of whom had killed the missing individual. In Study 1, observers (N?=?131) provided trustworthiness ratings – either before or after viewing and evaluating the honesty of videotaped or audio-only pleas – for a still image that depicted a neutral expression on the face of each pleader. In Study 2, observers (N?=?220) evaluated the sincerity of audio pleas paired either with an untrustworthy-looking target, a trustworthy-looking target, or no target face. Collectively, our findings indicated that first impressions of trait trustworthiness form the basis of state judgments of honesty, potentially contributing to misguided credibility assessments and miscarriages of justice in the legal system.     

Deciphering the riddle of human deceit detection: groups comprising a higher number of anxious people are better at distinguishing lies from truths

Are groups superior to individuals in detecting lies, and are there certain personality traits that significantly contribute to a collective lie-detecting capability? In the current research, we compared the ability of small groups to detect deception compared with individuals, and further examined whether small groups comprising more members high in attachment anxiety would show superior performance in detecting deceit. To this end, we asked 233 participants (40 groups and 113 individuals) to watch a series of clips showing a person making either truthful or untruthful statements, and then decide whether the speaker was honest or dishonest. Results confirmed our expectations and showed superior deceit-detection abilities in small groups, and that this ability was proportionate to the number of people high in attachment anxiety in the group. These results are discussed from the perspective of social defense theory, and the utility of diverse social groups in coping with diverse threats.