Tracing the use of electrical torture

With the aim of being able to trace skin sequelae to electrical torture, an interdisciplinary group of scientists (the "electrical group" of Anti-Torture Research, ATR) has performed controlled morphological studies on skin biopsies from experiments with fully anesthetized pigs. "Vesicular nuclei" in epidermis and a characteristic pattern of collagen calcification in dermis were found to be typical of electrical damage. These alterations were produced by alternating current as well as by direct current.     

Reexamining Adolescent Suicidal Ideation: A Developmental Perspective Applied to a Diverse Population

The purpose of this study was to test the hypothesis that suicidal ideation is a common experience in a general population of African American, Hispanic, and White urban high school students residing in low-income neighborhoods. Based upon a developmental framework, it was hypothesized that once attitudes toward suicide were controlled, ideation would not vary significantly by ethnicity, gender, or psychosocial variables usually associated with ideation. The multivariate analysis revealed that ideation did not vary by ethnicity however, females, substance users, and those with greater tolerance toward suicide, higher family coping, and lower self-esteem were more likely to report ideation. A series of ideator profiles, calculated from the probability estimates, showed that an increase in tolerance substantially raises the likelihood of ideation. The results taken together raise the question of whether it is time to reconceptualize the relationship between ideation and normal adolescent development.     

Validation studies of an immunochromatographic 1-step test for the forensic identification of human blood.

An immunochromatographic 1-step test for the detection of fecal occult blood was evaluated for applicability for the forensic identification of human blood in stained material. The following experiments were conducted: 1) determination of the sensitivity and specificity of the assay; 2) evaluation of different extraction media for bloodstains (sterile water, Tris buffer pH 7.5 provided in the test kit, 5% ammonia); 3) analysis of biological samples subjected to a variety of environmental insults; and 4) evaluation of casework samples. This immunochromatographic 1-step occult blood test is specific for human (primate) hemoglobin and is at least an order of magnitude more sensitive than previous methods for detecting human hemoglobin in bloodstains. The antigen is insensitive to a variety of environmental insults, except for exposure to certain detergents and household bleaches and prolonged exposure to certain preparations of luminol. The entire assay can be conducted in field testing conditions within minutes. When in the laboratory the supernatant from a DNA extraction is used for the assay, there is essentially no consumption of DNA for determining the presence of human hemoglobin in a forensic sample. The data demonstrate that this test is robust and suitable for forensic analyses.