‘Between Slavery and Freedom’: the expulsion and enslavement of free women of colour in the US South before the Civil War

For free black women in the pre-Civil War American South, the status offered by ‘freedom’ was uncertain and malleable. The conceptualization of bondage and freedom as two diametrically opposed conditions therefore fails to make sense of the complexities of life for these women. Instead, notions of enslavement and freedom are better framed as a spectrum. This article develops this idea by exploring two of the ways in which some black women negotiated their status before the law—namely though petitioning for residency or for enslavement. While these petitions are atypical numerically, and often offer tantalizingly scant evidence, when used in conjunction with evidence from the US census, it becomes clear that these women were highly pragmatic. Prioritizing their spousal and broader familial affective relationships above their legal status, they rejected the often theoretical distinction between slavery and liberation. As such, the petitions can be used to reach broader conclusions about the attitudes of women who have left little written testimony.     

D7S817,D18S865位点的群体遗传学研究

目的　调查D7S817、D18S86 5两个STR位点的遗传多态性 ,获得群体遗传学基本数据。　方法　采用PCR和PAG垂直电泳技术、银染显色方法。结果　D7S817位点在成都汉族群体中发现 9个等位基因 ,2 3种基因型 ,杂合度为 0 .738,个人识别机率为 0 .931。在甘肃东乡族群体中发现 8个等位基因 ,2 0种基因型 ,杂合度为 0 .75 2 ,个人识别机率为 0 .917。D18S86 5位点在成都汉族群体中发现 7个等位基因 ,17种基因型 ,杂合度为 0 .72 ,个人识别机率为 0 .90 6 ;在甘肃东乡族群体中发现 6个等位基因 ,15种基因型 ,杂合度为 0 .814,个人识别机率为 0 .898。基因型频率分布符合Hardy -Weinberg平衡定律。等位基因频率的分布在 2个群体之间无显著性差异。　结论　D7S817、D18S86 5位点的扩增效率高 ,重复性好 ,个人识别能力强 ,在法医学个人识别和亲子鉴定应用中有较高的价值。     

The spectroscopic detection of exogenous material in fingerprints after development with powders and recovery with adhesive lifters

The application of powders to fingerprints has long been established as an effective and reliable method for developing latent fingerprints. The powders adhere to the ridge pattern of the fingerprint only, thus allowing the image to be visualised. Fingerprints developed in situ at a crime scene routinely undergo lifting with specialist tapes to facilitate subsequent laboratory analysis. As with all recovered evidence these samples would be stored in evidence bags to allow secure transit from the scene to the laboratory and also to preserve the chain of evidence. In this paper, the application of Raman spectroscopy for the analysis of exogenous material in latent fingerprints is reported for contaminated fingerprints that had been treated with powders and also subsequently lifted with adhesive tapes. A selection of over the counter (OTC) analgesics were used as samples for the analysis and contaminated fingerprints were deposited on clean glass slides. The application of aluminium or iron based powders to contaminated fingerprints did not interfere with the Raman spectra obtained for the contaminants. In most cases background fluorescence attributed to the sebaceous content of the latent fingerprint was reduced by the application of the powder thus reducing spectral interference. Contaminated fingerprints developed with powders and then lifted with lifting tapes were also examined. The combination of these two techniques did not interfere with the successful analysis of exogenous contaminants by Raman spectroscopy. The lifting process was repeated using hinge lifters. As the hinge lifters exhibited strong Raman bands the spectroscopic analysis was more complex and an increase in the number of exposures to the detector allowed for improved clarification. Raman spectra of developed and lifted fingerprints recorded through evidence bags were obtained and it was found that the detection process was not compromised in any way. Although the application of powders did not interfere with the detection process the time taken to locate the contaminant was increased due to the physical presence of more material within the fingerprint. The presence of interfering Raman bands from lifting tapes is another potential complication. This, however, could be removed by spectral subtraction or by the choice of lifting tapes that have only weak Raman bands.     

脑皮质挫伤组织的定量自动图象分析——存活时间与神经细胞及胶质细胞反应的关系

作者用Quantimet-720型自动图象分析仪,对10例伤后不同时间的脑皮质挫伤病理组织切片,作神经细胞及胶质细胞的定量测定。结果发现受伤区神经细胞的数目及体积分数,随伤后存活时间增加而沿对数曲线减少;胶质细胞数目和体积分数则随伤后存活时间延长而增加,线性关系明显。其中星形胶质细胞数目的增加更为显著,伤后4.5h死亡者,细胞数已开始增加。上述改变具有一定规律性。作者认为,脑挫伤死亡案例,可用本文报告的方法,推测伤后存活时间。此法在法医学文献中尚未见报告。     

生物材料中溴氰菊酯的内标监控高效液相色谱分析方法研究

本文经实验研究建立了以反式二氯苯醚酯为监控内标反相高效液相色谱检测生物材料中溴氰菊酯的方法。通过空白兔肝添加试验验证了方法的回收率,工作曲线线性及数份样品的重视性。结果满意。并通过染毒动物试验验证了方法的实用性。     

Ultraviolet radiation and its role in wound pattern documentation.

The history of ultraviolet illumination in photography is discussed. Particular attention is devoted to the forensic aspects of ultraviolet photography as it relates to patterned injury on human skin. The authors discuss the theory underlying ultraviolet illumination of wounds on skin as well as the equipment required for this type of imaging.     

Formal Procedures, Informal Processes, Accountability, and Responsiveness in Bureaucratic Policy Making: An Institutional Policy Analysis

This study examines the role of public notice and comment in the development of 42 rules. These procedures can provide useful information to policy makers about the preferences of those who stand to be affected by agency actions. More importantly, they serve as cues for the accommodation of interests and the resolution of conflict through processes that are grounded in agencies' accountability to political officials. Yet, an examination of the interrelationship between formal, procedural constraints and the informal processes surrounding them reveals that the effects of notice and comment in promoting bureaucratic responsiveness are limited in ways that have received little systematic analysis. A consideration of the tension between the instrumental goal of procedural accountability and the political tasks that often dominate bureaucratic policy making suggests that it is desirable to return to the original use of notice and comment as a device for exposing agencies to the views of affected interests.