Identification of a novel polymorphism in the X-chromosome region homologous to the DYS456 locus

During an extensive multipopulation study with Y-short tandem repeat (STR) loci, amplified using the AmpFlSTR Yfiler PCR amplification kit, amplification of a 71 bp fragment was observed in 2.32% of the male samples analyzed (N = 3141). By direct sequencing of this fragment, it was determined that the primer binding sequences were identical to those of the DYS456 locus. A T to G single-nucleotide polymorphism (SNP) enabled amplification of the 71 bp fragment. The SNP is located within an X-Y homologous region at Xq21.31 and was observed with the highest frequency within the African American and Sub-Saharan African populations in our study. Presence of SNP on the X chromosome did not interfere with the reliability of typing the DYS456 locus and the other Y-STR loci typeable using the AmpFlSTR Yfiler PCR amplification kit. Full profiles in a mixture of male:female at 1:4000 were obtained using the current configuration of the AmpFlSTR Yfiler kit even in the presence of female DNA containing the G variant.     

Sudden death from tubercular myocarditis

Tuberculous myocarditis is a rare finding. We present the case of a 33-year-old woman who was in good health and who died suddenly at home. Autopsy and histopathologic examinations revealed granulamatous lesions in the myocardium, lungs, lymph nodes, liver, and spleen. No fast acid bacilli were demonstrated on histological examination. The presence of a Mycobacterium tuberculosis DNA complex was identified using a polymerase chain reaction (PCR) on formalin-fixed paraffin-embedded histological samples. An HIV test carried out on the blood obtained during the autopsy was negative according to the DNA amplification technique (PCR) and enzyme-linked immunosorbent assay serological test. We hypothesize that the mechanism of death was severe ventricular arrhythmia due to granulomatous proliferation in the structures of the interventricular septum.     

The use of interference filters in refractive index measurements

Interference filters were investigated as alternatives to sodium vapour lamps to establish their suitability for making refractive index measurements using a hot stage microscope. It was found that variations in the characteristics of filters and in their method of mounting could give rise to systematic errors unless adequate precautions were taken.     

化学显色法快速筛选饮料及尿液中γ-羟基丁酸和γ-丁内酯

目的建立化学显色法快速筛选饮料及尿液中γ-羟基丁酸(GHB)及其前体γ-丁内酯(GBL)的方法。方法在酸性条件下GHB转化为GBL,GBL和盐酸羟胺在碱性条件下生成γ-羟基丁酰羟胺,γ-羟基丁酰羟胺在酸性条件下和三氯化铁反应,生成紫红色的络合物。结果饮料中GHB最低检出浓度为0.5～2mg/mL,低于常见滥用质量浓度。该方法也可以用于尿液分析,最低检出质量浓度为0.5mg/mL。考察了常见有机溶剂和麻醉镇静药物的干扰。结论该方法简单、安全、快速,为临床和法庭科学实验室快速筛选GHB和GBL提供了便利。     

经济的法律逻辑:马克思法律反作用思想的具体读解

以往人们对马克思历史唯物主义法律观存在着片面性认识,忽视了马克思关于法律对经济基础反作用思想的深入探究,尤其缺乏对法律反作用的逻辑机理和表现形式的具体分析.旨在全面领悟和深入读解马克思关于经济发展中法律作用的思想,揭示经济发展中蕴含的法律逻辑机理.     

颜色的文化蕴含

人们辨别颜色的视觉器官可以根据颜色的色彩、亮度和浓度把不同的颜色区分开来。实际生活经验的积累决定了颜色词汇的命名。不同文化背景的人有不同的颜色基本词 ;对同一颜色的反应和联想也不尽相同。颜色因特定文化环境文化习俗而具有特定的文化象征意义     

通过规制实现健康保护——范围、方法和程序概览

风险规制法的目标和方法在于具体危险的防御和预防(可能的)风险。对于科技工艺和技术生产的物质或生物来说,除了惩罚禁止措施外,需要建构一套传统风险预防的前置制度,通过广泛的公众参与来对科技后果进行评估,从而采取相应的预防措施。风险规制的行政法方法包括传统的行政调控方式和信息规制方法、激励型规制手段等非禁令手段的方法。通过智慧的规制方法既可实现意欲达到的规制目标,同时也能降低行政管理成本和减少对经济活动的过度干预。     

刺激性毒剂希埃斯(CS)的检验

用化学显色法、红外光谱法(IR),以及色-质联用技术(GC/MS)分析具有强烈刺激性气味的毒剂希埃斯(CS),在缺少已知对照样的情况下,用以上方法,可做出准确的鉴定.