犯罪记忆检测的涵义

犯罪记忆检测包括犯罪心理生理反应的诱导、测量、分析、识别四个成分,是一个完整的体系。犯罪记忆检测是一类犯罪心理测试,不是犯罪心理测试的全部;犯罪记忆检测可以用于刑事测谎,却不仅仅局限于刑事测谎;犯罪心理生理测谎仅仅是刑事测谎手段的一种,不能完全代表刑事测谎。     

上海地区D1S80位点基因频率分布及其在亲子鉴定中的应用

目的：将D1S80位点的DNA多态性分析应用于亲子鉴定。方法;PCR、聚丙烯酰胺凝胶电泳及溴已锭染色。结果：获得D1S80位点的DNA多态性分布数据。结论：D1S80位点的PCR检测方法可成功地用于亲权纠纷案的鉴定。     

“伽利略传统”与经济学实证方法

经典力学中诞生的“伽利略传统”对经济学方法有很大的影响。实证主义把整个人类文化看成是以实证为基础的知识体系,把科学方法的某一方面夸大为科学理论的唯一出发点,走向了片面性。在现代经济学中,一方面模型方法发挥着越来越大的作用,体现了经济学方法的进步;另一方面,我们应该看到,经济学与物理学有本质差异,它没有典型的物理意义上的实验,同时它又包含物理学所没有的人与人的关系。因此,经济学既要合理地继承“伽利略传统”,又要注重社会历史、文化和民族心理等因素。     

公安政法院校心理测试技术教学的思考

文章对当前阻碍公安政法院校心理测试技术教学发展的主要问题进行了总结,详细分析了产生问题的各种原因,并从改善心理测试技术人才的培养目标、教学内容、教学方法、教学条件等角度,探讨了从根本上促进心理测试技术教学发展的思路和方法,以顺应新时期培养新型侦查专门人才和"科技强警"的要求。     

毛圆科线虫对苯并咪唑类药物的抗药性

采用虫卵孵化试验对乌鲁木齐地区四个羊场饲养的羊感染的毛圆科线虫对苯并咪唑类药物的抗药性进行了检测.结果显示,两个南山羊场的虫卵孵化半数抑制度(ED50)分别为0.002和0.050μg/mL,两个屠宰场育肥羊场的ED50分别为0.270和0.293μg/mL,屠宰场育肥羊场的ED50远大于世界兽医寄生虫学促进协会推荐的0.100μg/mL.结果表明,该地区羊场存在抗苯并咪唑类药物的毛圆科线虫,而且抗药性程度较为严重.     

韩国对外直接投资与产业结构优化研究

韩国是发展对外直接投资比较成功的新兴工业化国家之一.定量分析显示:韩国对外直接投资促进了国内产业结构的优化,降低国内第一、第二产业结构的比例,明显提高国内第三产业结构的比例.借鉴韩国的经验,我国应该选择制造业作为我国发展对外直接投资的重点行业、注重发挥发展中国家的产业相对优势以及对外直接投资的产业选择方向应与国内产业结构高度化的发展趋势相一致.     

构建我国青少年犯罪防控模式的思考

青少年犯罪是世界上每个国家都不愿意面对而又无法回避的难题。目前 ,青少年犯罪日益突出 ,已成为倍受关注的社会焦点问题。因此 ,对青少年犯罪的防控 ,是整个犯罪控制体系中不可或缺的组成部分。对于青少年犯罪的防控 ,要从两个层面来实现 :一是预防青少年犯罪的发生 ;二是控制、改造青少年犯罪。具体措施应从完善立法、减少司法干预、优化社会环境等五个方面展开。     

idPAD: Paper Analytical Device for Presumptive Identification of Illicit Drugs

As drug overdose deaths across the United States continue to rise, there is increasing interest in field testing of illicit substances. This work discusses a paper-based analytical device (idPAD) that can run a library of 12 colorimetric tests at the same time, each detecting different chemical functional groups and materials found in illicit drugs, distractor substances, and cutting agents. The idPAD requires no electricity, costs less than $2 USD, and requires minimal training to operate. The results of the 12 tests form a color barcode which is “read” by comparison to standard images. The accuracy of the idPAD was assessed using samples of heroin, cocaine HCl, crack, and methamphetamine at concentrations of 25%–100% in a lactose matrix, as well as pure lactose. Based on 840 “reads” by three different users, the idPAD showed 95% sensitivity and 100% specificity for detecting these drugs; the most common error was mistaking cocaine HCl for crack or crack for cocaine HCl. In a second step, samples of heroin, cocaine, and methamphetamine (n = 30) and distractor substances (pharmaceuticals, cutting agents, and other illicit drugs, n = 64) were tested by two readers, yielding a sensitivity of 100% and specificity of 97%. Targeted substances were detected reliably at 55–180 μg/lane, and the idPAD was found to be stable for at least 3 months when stored at room temperature. The library approach used in the idPAD may provide the accuracy and robustness necessary for a presumptive field drug test.     

Testing Antemortem Blood for Ethanol Concentration from a Blood Kit in a Refrigerator Fire

The stability of ethanol in antemortem blood stored under various conditions has been widely studied. Antemortem blood samples stored at refrigerated temperature, at room temperature, and at elevated temperatures tend to decrease in ethanol concentration with storage. It appears that the stability of ethanol in blood exposed to temperatures greater than 38°C has not been evaluated. The case presented here involves comparison of breath test results with subsequent analysis of blood drawn at the time of breath testing. However, the blood tubes were in a refrigerator fire followed by refrigerated storage for 5 months prior to analysis by headspace gas chromatography. The subject’s breath was tested twice using an Intoxilyzer 8000. The subject’s blood was tested in duplicate using an Agilent headspace gas chromatograph. The measured breath ethanol concentration was 0.103 g/210 L and 0.092 g/210 L. The measured blood ethanol concentration was 0.0932 g/dL for both samples analyzed. Although the mean blood test result was slightly lower than the mean breath test result, the mean breath test result was within the estimated uncertainty of the mean blood test result. Even under the extreme conditions of the blood kit being in a refrigerator fire, the measured blood ethanol content agreed well with the paired breath ethanol test.     

Fentanyl Detection Using Eosin Y Paper Assays,

Eosin Y is a potential new color test for use in detecting illicit drugs that has not been extensively studied. In the present study, a variety of drugs of abuse and fentanyl analogues were tested to determine which drugs will bind to eosin Y, which functional groups are capable of binding and eliciting a color change, and a mechanism for eosin Y binding to fentanyl. Further, these agents were combined with common cutting agents and other drugs of abuse in order to determine the fentanyl detection limit in a drug mixture using an eosin Y test strip. Additionally, cobalt thiocyanate was used to determine whether the combination of cobalt thiocyanate and eosin Y has the potential to identify fentanyl. Through the testing performed, we concluded that (i) Eosin Y is capable of detecting low amounts of fentanyl down to 1%, (ii) Eosin Y binds to select tertiary amines to produce an orange to pink color change, and (iii) Eosin Y binds to the nonpiperidine ring nitrogen of fentanyl as a primary binding site and the piperidine ring nitrogen as a secondary binding site. While the cobalt thiocyanate assay detected 1% fentanyl in some of the mixtures, eosin Y detected 1% fentanyl in all mixtures. Finally, eosin Y was able to detect fentanyl in forensic case samples containing heroin and various cutting agents. Based on our results, eosin Y has the potential to screen for fentanyl and fentanyl analogues and can detect fentanyl in low amounts when mixed with common cutting agents.