Detection of nitro-organic and peroxide explosives in latent fingermarks by DART- and SALDI-TOF-mass spectrometry

The ability of two mass spectrometric methods, surface-assisted laser desorption/ionization-time of flight-mass spectrometry (SALDI-TOF-MS) and direct analysis in real time (DART-MS), to detect the presence of seven common explosives (six nitro-organic- and one peroxide-type) in spiked latent fingermarks has been examined. It was found that each explosive could be detected with nanogram sensitivity for marks resulting from direct finger contact with a glass probe by DART-MS or onto stainless steel target plates using SALDI-TOF-MS for marks pre-dusted with one type of commercial black magnetic powder. These explosives also could be detected in latent marks lifted from six common surfaces (paper, plastic bag, metal drinks can, wood laminate, adhesive tape and white ceramic tile) whereas no explosive could be detected in equivalent pre-dusted marks on the surface of a commercial lifting tape by the DART-MS method due to high background interference from the tape material. The presence of TNT and Tetryl could be detected in pre-dusted latent fingermarks on a commercial lifting tape for up to 29 days sealed and stored under ambient conditions.     

Family influences,school behaviors,and risk for the later development of an eating disorder

Interviews were conducted with parents of 136 female and 45 male adolescents categorized into risk groups for the later development of an eating disorder. The family and school concomitants of risk status in females were demonstrated to be different from that in males. Risk group female adolescents rated family cohesion, parent-adolescent communication processes, and overall family satisfaction more negatively than the comparison group. Mothers of moderate risk group females reported lower family cohesion than the comparison group; there were no group differences for adolescent females in fathers' ratings of family measures. However, no group differences were found on any of the family measures between male risk and comparison males. For both females and males, there were no significant group differences in family history of eating and mood disorders, or alcohol dependence. Teacher ratings indicated relatively greater internalizing tendencies in the high-risk female group.This investigation was supported by NICHD Grant Number 1R01-HD24700 awarded to Gloria R. Leon.Received Ph.D. from University at Maryla. Research interests include precursors of eating disorders and stress and coping in extreme environments. To whom correspondence should be addressed.Received M.A. from San Diego State University. Research interests include precursors of eating disorders, substance abuse, and personality.Received Ph.D. from Stanford University. Research interests include psychosocial aspects of health promotion and disease prevention.Received B.A. from University of Maine. Research interests life span development and family issues.     

Environmental survey for four pathogenic bacteria and closely related species using phylogenetic and functional genes

Bacterial species with high DNA sequence similarity to pathogens could affect the specificity of assays designed to detect biological threat agents in environmental samples. The natural presence of four pathogenic bacteria, Bacillus anthracis, Clostridium perfringens, Francisella tularensis, and Yersinia pestis and their closely related species, was determined for a large collection of soil and aerosol samples. Polymerase chain reaction (PCR) and gene sequencing were used using group-specific 16S rRNA primers to identify pathogens and related species, and pathogen-specific virulence genes. Close relatives of B. anthracis (B. cereus group species) were detected in 37% of the soils and 25% of the aerosol samples. The B. anthracis protective antigen (pag) gene or a close homolog was detected in 16 of these samples. For the other three pathogen groups, the frequency of detection was much lower, and none of the samples were positive with both the phylogenetic and virulence gene primer sets.     

Business group drops opposition to drug users' health centre

A legal intervention by the Vancouver Area Network of Drug Users has forced the Community Alliance to abandon a petition against a health contact centre in Vancouver's Downtown Eastside.     

Post-Hurricane Katrina Racialized Explanations as a System Threat: Implications for Whites’ and Blacks’ Racial Attitudes

This experiment drew upon theoretical perspectives on group and system justification to examine whether exposure to media coverage arguing that racism was responsible for the ineffective Hurricane Katrina disaster response affected White and Black Americans’ intergroup attitudes. Consistent with a system justification perspective, Whites exposed to video clips arguing that the hurricane Katrina disaster response was due to racism displayed greater racial ingroup attachment and ingroup love compared to Whites exposed to videos conveying that the government’s incompetence was to blame for the disaster response. In contrast, Blacks displayed strong levels of ingroup attachment and ingroup love across both video conditions. This research highlights how insights from social psychology are valuable in understanding psychological responses to social justice-related events, such as the tragic response to hurricane Katrina.

1995 MEYER ELKIN ESSAY CONTEST WINNER IMPACT OF EXPEDITED VISITATION SERVICES,A COURT PROGRAM THAT ENFORCES ACCESS

The impact of a court service that is set up to enforce access orders is measured from the perspective of 70 children whose parents were program participants in the service. Children's perception of conflict diminished significantly over the 6-month period of service involvement. Children improved in their overall and school adjustment when visits with their noncustodial parents were more frequent. They were less depressed when they had quality relationships with both their mother and father. Children perceived more conflict as visits increased, but the negative impact was minimal.     

Face-to-Face Confrontation: Effects of Closed-Circuit Technology on Children's Eyewitness Testimony and Jurors' Decisions

The present study was designed to examine effects of closed-circuit technology on children's testimony and jurors' perceptions of child witnesses. For the study, a series of elaborately staged mock trials was held. First, 5- to 6-year-old and 8- to 9-year-old children individually participated in a play session with an unfamiliar male confederate. Approximately 2 weeks later, children individually testified about the event at a downtown city courtroom. Mock juries composed of community recruits viewed the trials, with the child's testimony presented either live in open court or over closed-circuit television. Mock jurors made ratings concerning the child witness and the defendant, and deliberated to reach a verdict. Results indicated that overall, older children were more accurate witnesses than younger children. However, older, not younger children produced more inaccurate information in free recall. Compared to live testimony in open court, use of closed-circuit technology led to decreased suggestibility for younger children. Testifying in open court was also associated with children experiencing greater pretrial anxiety. Closed-circuit technology did not diminish factfinders' abilities to discriminate accurate from inaccurate child testimony, nor did it directly bias jurors against the defendant. However, closed-circuit testimony biased jurors against child witnesses. Moreover, jurors tended to base their impressions of witness credibility on perceived confidence and consistency. Implications for the use of closed- circuit technology when children testify are discussed.     

Informing the Electorate? How Party Cues and Policy Information Affect Public Opinion about Initiatives

Citizens in representative democracies receive party endorsements and policy information when choosing candidates or making policy decisions via the initiative process. What effects do these sources of information have on public opinion? We address this important question by conducting survey experiments where citizens express opinions about initiatives in a real‐world electoral context. We manipulate whether they receive party cues, policy information, both, or neither type of information. We find that citizens do not simply ignore policy information when they are also exposed to party cues. Rather, citizens respond by shifting their opinions away from their party's positions when policy information provides a compelling reason for doing so. These results challenge the prominent claim in public opinion research that citizens blindly follow their party when also exposed to policy information. They also suggest that efforts to inform the electorate can influence opinions, provided that citizens actually receive the information being disseminated.     

Using art and everyday objects to fight HIV/AIDS in Uganda

This paper argues for the importance of enabling dialogue between women and men about taboo subjects of sex and sexuality in HIV/AIDS prevention. It reports the findings of a project that sought to use art (specifically sculpture) for creating dialogue between women and men in rural Uganda. It then provides suggestions for HIV/AIDS practitioners on how to use everyday objects to stimulate similar discussion about sex and disease prevention between women and men. We argue for the utility of art and everyday objects where literacy rates are low, or where modes of communication and information-sharing are predominantly orate.