A new approach to amino acid racemization in enamel: testing of a less destructive sampling methodology

Aspartic acid racemization has been found to be an accurate measure of age at death for recent forensic material. This paper examines the practicality of using acid etching of the tooth surface to extract amino acids from the enamel for racemization analysis. By serial etching of the tooth and contamination of the teeth with bovine serum albumin prior to etching, the ability of etching to remove contamination was assessed. The destructiveness of the method was visualized and quantified using micro-computed tomography (micro-CT). By bleaching the teeth and by deeper etching it was possible to obtain more consistent values. While etching had little effect on the enamel at the macroscale, it did have an impact at the microscale. The quantities of enamel removed varied depending upon the tooth morphology, but were not large. Acid etching of enamel thus appears to be a promising new method for extracting proteins for amino acid racemization age estimation noninvasively.     

Sudden unexpected death due to a previously undiagnosed plasma cell dyscrasia

The plasma cell dyscrasias are a diverse group of disorders characterized by the production of a clonal paraprotein. Sudden death is a recognized complication of the plasma cell dyscrasias, most commonly in individuals with cardiac involvement by amyloidosis. However, the current forensic literature has no reported cases in which sudden death resulted from complications of a plasma cell dyscrasia that was first diagnosed by postmortem histologic examination. We present the case of a woman whose sudden and unexpected death resulted from a seizure. Postmortem examination revealed no evidence of trauma or a grossly identifiable natural disease process that would have accounted for her death. However, microscopic and immunohistologic studies revealed a previously undiagnosed plasma cell dyscrasia, the clonality of which was determined by immunohistochemical studies for immunoglobulin light chains, that was not associated with amyloid deposition. This case elucidates a previously unrecognized cause of sudden unexpected death and illustrates the importance of microscopic studies in selected cases examined in medical examiner/coroner offices.     

Investigation of Postmortem Absorption and Redistribution After the Application of a Fentanyl Patch

Fentanyl deaths have increased with availability of transdermal patches. Interpretation of postmortem fentanyl levels may be complicated by postmortem redistribution and absorption of fentanyl from a patch. We applied an unused 100‐μg/h fentanyl patch onto the lower abdomen of a decedent with no premortem fentanyl exposure. Ocular fluid, blood, and urine were collected prior to placement, and the decedent was refrigerated for 23 h. Prior to the autopsy, urine, subcutaneous tissue under the patch, and samples from the same anatomic sites were obtained. We observed no fentanyl in any postpatch placement samples (LOD: 0.1 ng/mL for blood and vitreous fluid, 1.0 ng/mL urine, 2.0 ng/g for tissues). Although we observed no postmortem absorption of fentanyl, this was only a single case; therefore, we recommend that patches be removed after receipt of a cadaver before initiation of an autopsy, with the location of removed patch documented.     

Mortality under and after sentence of male convicts transported to Van Diemen's Land (Tasmania), 1840–1852

This article reports on mortality in a cohort of 7084 English, Irish and Scottish-born convict men who were transported on 30 ships to Tasmania between 1840 and 1852. To the authors' knowledge, this is the first study of convict mortality that systematically traces the mortality of convicts after emancipation as well as under sentence. This pilot study investigates the relationship between pre-transportation characteristics, convict discipline, reactions to convict discipline, and mortality under and after sentence of the male convict population. The convict men were various in their origins but shared the experience of penal servitude under the gaze of a paper panopticon. Controlling for other factors, the authors find that the convicts were more likely to die under sentence if they were born in Scotland, London or an industrial-urban area; if they exhibited disturbed mental behaviour under sentence, such as tearing their clothes; or if they had more time in solitary confinement or more accumulated insults of their mind and body. For those who survived sentence, mortality was higher for those born in an industrial-urban area, those who had more alcohol-related offences under sentence, those with more time in solitary confinement under sentence, and those who were violent or threatened violence while under sentence.     

Weight-Based Victimization Among Adolescents in the School Setting: Emotional Reactions and Coping Behaviors

Weight-based victimization is a frequent experience for adolescents, but little is known about their emotional reactions and coping strategies in response to weight-based teasing and bullying. The present study examined the ways that adolescents cope with experiences of weight-based victimization at school. An initial sample of 1,555 students from two high schools in central Connecticut completed a comprehensive battery of self-report measures to assess their experiences of weight-based teasing and bullying at school, affective responses to these experiences, and coping strategies used to deal with incidents of weight-based victimization. Only those students who reported experiencing weight-based victimization (N = 394) were included for the purposes of the present study. Of this sub-sample, 56% were females, 84% were Caucasian, and the mean age was 16.4 years. Weight-based victimization resulted in 40–50% of adolescents feeling sad and depressed, worse about themselves, bad about their body, angry, and some feeling afraid. Gender differences emerged with respect to how boys and girls react to experiences of weight-based victimization. However, structural equation model estimates demonstrated that both boys and girls who reported negative affect in response to weight-based victimization were more likely to use coping strategies of avoidance (e.g., avoiding gym class), increased food consumption, and binge eating. Binary logistic regressions showed that the odds of students skipping school or reporting that their grades were harmed because of weight-based teasing increased by 5% per teasing incident, even after controlling for gender, age, race, grades, and weight status. To our knowledge, this study is the first systematic examination of affective reactions and coping strategies among overweight adolescents in response to weight-based victimization. These findings can inform efforts to assist overweight youth to cope adaptively with weight-based victimization.     

COMMODIFICATION OF HOUSING WITH CHINESE CHARACTERISTICS

In its attempt to reform the housing system, China has rapidly marketized but not privatized the housing production process and system. In contrast, the consumption of housing is privatized quickly but marketized slowly. Yet, the housing allocation process still largely relies on the old system of heavy subsidization. Nonetheless, housing subsidy has been curtailed and the growth in home ownership and the future pegging of rent and price with household income would dwarf the housing provider role of the government. The commodification process necessitated new government roles since government support in infrastructure and superstructure is essential for the healthy functioning of the newly emerged housing market. Overall, retention of the public ownership of the development companies and the housing financiers differentiate the Chinese housing reform process from those of other market and post‐socialist economies.     

The interaction between single mothers' living arrangements and welfare participation

This article examines the interaction between single mothers' living arrangements and their welfare participation, taking into account the endogeneity embedded in the two decisions. Using data from the 1990 Survey of Income and Program Participation, I estimate a two‐stage instrumental variables model and simulate the effects of partial‐ and full‐family benefit reductions on both the distribution of living arrangements and the rate of welfare participation. Tabulations show that 62 percent of single mothers live independently, 16 percent live in the home of their parents, 12 percent cohabit with an unrelated man, and 11 percent share with others. Reductions in combined AFDC and food stamp benefits increase mothers' probability of living with their parents relative to living independently, cohabiting, or sharing with others. Benefit reductions also decrease the probability of welfare receipt. The resulting drop in the participation rate is even more pronounced once the simultaneous effect on the distribution of living arrangements is taken into account. The implication of these findings is that policies aimed at reducing welfare caseloads may have the unanticipated effect of shifting families' living arrangements, potentially confounding the impacts of policy changes in either positive or negative ways. © 2000 by the Association for Public Policy Analysis and Management.