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581.
Mairs S Swift B Rutty GN 《The American journal of forensic medicine and pathology》2004,25(4):276-284
Osteological assessment of human remains forms an essential part of forensic work, especially during the examination of extensively decomposed, dismembered, or burnt bodies. Currently employed methods for removal of adherent soft tissue reflect practices often used by museum curators, notably insect consumption, enzymatic maceration, or boiling of the bones, with subsequent manual removal of material. This study was designed to assess the effectiveness of detergents for the purpose of soft-tissue removal from animal-derived specimens. The results indicate that such a means is comparable to enzymatic maceration but with fewer health and safety issues and greater advantages regarding transportation and availability of materials when an investigator is in a fieldwork scenario. 相似文献
582.
Diatoms are a group of unicellular algae that have been recorded and classified for over 200 years and have been used in a range of applications in forensic science. We have developed a quantitative diatom-based reconstruction technique to confirm drowning as a cause of death and localize the site of drowning in two recent, high-profile, case studies. In both case studies we collected diatom samples from the local and/or regional area to act as a control in the examination of diatom assemblages associated with lungs and clothing. In Case Study 1 the modern analog technique suggested that all lung and clothing samples have statistically significant similarities to control samples from shallow water habitats. In Case Study 2, the analog matching suggested that the majority of lung samples show a statistically significant relationship to samples from a pond, indicating that this was the drowning medium. 相似文献
583.
Lawyer SR Ruggiero KJ Resnick HS Kilpatrick DG Saunders BE 《Journal of interpersonal violence》2006,21(10):1333-1353
This research examines mental health correlates of different victim-perpetrator relationships among adolescent victims of interpersonal violence. A large and nationally representative sample of adolescents (N = 4,023) responded to structured telephone interviews concerning mental health functioning (posttraumatic stress disorder-PTSD, major depressive disorder, substance abuse/dependence, and delinquency). Those reporting histories of sexual (n = 321) and/or physical (n = 688) assault were queried about specific aspects of their assaults, including their relationship with the perpetrator. After controlling for demographic and assault-related risk factors, the victim-perpetrator relationship remained a significant risk factor for mental health problems. Adolescents sexually assaulted by nonstrangers were at increased risk for PTSD; those sexually assaulted by acquaintances or people they did not know well were at increased risk for delinquency. Adolescents who were physically assaulted by a family member were at increased risk for PTSD. Explanations for the findings and the need for consistent assessment methods across related studies are discussed. 相似文献
584.
Budowle B Adamowicz M Aranda XG Barna C Chakraborty R Cheswick D Dafoe B Eisenberg A Frappier R Gross AM Ladd C Lee HS Milne SC Meyers C Prinz M Richard ML Saldanha G Tierney AA Viculis L Krenke BE 《Forensic science international》2005,150(1):1-15
A total of 2443 male individuals, previously typed for the 13 CODIS STR loci, distributed across the five North American population groups African American, Asian, Caucasian, Hispanic, and Native American were typed for the Y-STR loci DYS19, DYS385a/b, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438 and DYS439 using the PowerPlex Y System. All population samples were highly polymorphic for the 12 Y-STR loci with the marker DYS385a/b being the most polymorphic across all sample populations. The Native American population groups demonstrated the lowest genetic diversity, most notably at the DYS393 and DYS437 loci. Almost all of the 12-locus haplotypes observed in the sample populations were represented only once in the database. Haplotype diversities were greater than 99.6% for the African Americans, Caucasians, Hispanics, and Asians. The Native Americans had the lowest haplotype diversities (Apaches, 97.0%; Navajo, 98.1%). Population substructure effects were greater for Y-haplotypes, compared with that for the autosomal loci. For the apportionment of variance for the 12 Y-STRs, the within sample population variation was the largest component (>98% for each major population group and approximately 97% in Native Americans), and the variance component contributed by the major population groups was less than the individual component, but much greater than among sample populations within a major group (11.79% versus 1.02% for African Americans/Caucasians/Hispanics and 15.35% versus 1.25% for all five major populations). When each major population is analyzed individually, the R(ST) values were low but showed significant among group heterogeneity. In 692 confirmed father-son pairs, 14 mutation events were observed with the average rate of 1.57x10(-3)/locus/generation (a 95% confidence bound of 0.83x10(-3) to 2.69x10(-3)). Since the Y-STR loci reside on the non-recombining region of the Y chromosome, the counting method is one approach suggested for conveying an estimate of the rarity of the Y-haplotype. Because the Y-STR loci are not all in disequilibrium to the same extent, the counting method is a very conservative approach. The data also support that autosomal STR frequencies can be multiplied by the upper bound frequency estimate of a Y-haplotype in the individual population group or those pooled into major population groups (i.e., Caucasian, African American, Hispanic, and Asian). These analyses support use of the haplotype population data for estimating Y-STR profile frequencies for populations residing in North America. 相似文献
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