血液样品中乙醇稳定性的实验研究

目的考察在不同存放条件下含乙醇的血液样品中乙醇浓度的变化情况。方法采用顶空-气相色谱法,以异丙醇为内标,对存放条件不同的血液样品中乙醇进行检测。结果冷冻(-10℃)条件存放1至30天,血液样品中乙醇含量无显著变化;冷藏(4℃)条件存放1至30天,血液样品中乙醇含量变化不显著;室温(28℃~33℃)条件存放1至30天,血液样品中乙醇含量显著改变。结论含有乙醇的血液样品,在冷冻、冷藏条件下可较稳定的存放30天;在室温条件下存放30天血液样品中乙醇浓度发生显著变化,不可在此条件下存放。     

Efficacy, Self-Derogation, and Alcohol Use Among Inner-City Adolescents: Gender Matters

Prior studies have found inconsistent relationships between measures of self-concept and adolescent alcohol use. The current study explored whether the link between various measures of self-concept and alcohol use depends on gender. In addition, earlier work suggested a focus on negative self-esteem (i.e., self-derogation) might be more useful in predicting alcohol use. Students (N = 1459) attending 22 middle and junior high schools in New York City completed surveys that included measures of efficacy, self-derogation, and alcohol use. Participants completed surveys at baseline, 1-year follow-up, and 2-year follow-up. Data collectors administered the questionnaire following a standardized protocol during a regular 40-min-class period. On the basis of a longitudinal structural equation model, lower efficacy was related to greater self-derogation a year later across gender. Increased self-derogation predicted higher alcohol use for girls but not boys. These findings are congruent with a literature highlighting the importance of negative thoughts about the self in drinking behavior for women but not men. The results suggest that the alcohol prevention approaches should include material to enhance girls' self-esteem.     

Alcohol-related Rape Among University Students

Background: Alcohol-related rape among university students is clearly a major concern. However, there have been no large-scale surveys of the prevalence of this offence among university students in the UK. The aim of the current paper is to investigate the prevalence and characteristics of alcohol-related rape among university students in seven universities in Wales.

Methods: All universities in Wales were approached to take part in the research. Eight of the nine universities agreed to take part and seven universities emailed their students as planned. On the launch date, emails were sent by the universities to all students requesting that they take part in the survey. The email contained a link to a questionnaire covering a range of topics including: demographics, lifestyle factors, and substance misuse.

Results: In total, 7,846 students submitted a questionnaire. Overall, just under six per cent of females reported being the victim of alcohol-related rape while at university compared with one per cent of males. Sexual orientation was significantly correlated with alcohol-related rape, with three per cent of heterosexuals reported being the victim of alcohol-related rape, compared with eight per cent of lesbians or gays. Students who drank alcohol frequently and those involved in binge drinking were also significantly more likely to report the offence.

Conclusions: The government and universities should play a more direct role to ensure that actions are taken to deter, prevent, and treat the consequences of these largely unreported offences.     

Risk and Protective Factors Associated with Alcohol,Cigarette, and Marijuana Use During Adolescence

The purpose of this study was to increase the knowledge base of adolescent substance use by examining the influences of risk and protective factors for specific substance use, namely alcohol, cigarettes, and marijuana. Participants included 271 adolescents and their primary caregivers referred for mental health services across North Carolina. A series of hierarchical multiple regressions showed that the relative influences of risk and protective factors differed depending on the target substance in some cases. History of parental felony predicted use of all 3 substances, although the direction of association was substance specific. Parental behavioral control (how families express and maintain standards of behavior) was predictive only of cigarette and marijuana use, not alcohol use. The different links among risk factors, protective factors, and specific substance use are discussed, and recommendations for both mental health and substance use professionals are offered.She received her M.A. in Psychology from Wake Forest University and is currently a doctoral student in Clinical Psychology at the University of North Carolina at Greensboro. Her major research interests include developmental pathways to aggressive behavior among females.An evaluator for the North Carolina Department of Health and Human Services, her major research interests include system of care intervention programming.She received her PhD in Clinical Psychology from Purdue University. Her major research interests include developmental psychopathology and early intervention.His research interests focus on youth violence and youth involved with the juvenile justice system.She received her PhD in Clinical Psychology from the University of North Carolina at Greensboro. Her research interests focus on early intervention with young children.     

Time-Varying Risk Factors for Reassault Among Batterer Program Participants

This study uses longitudinal data to identify risk markers for reassault among batterer program participants. Data are from 308 men and their partners collected at five, 3-month intervals. Time-varying situational and behavioral risk factors, as well as time-invariant individual characteristics, are examined. The most influential risk markers, in terms of relative risk and level of statistical significance, were time-varying: 2 measures of the man's drunkenness during the follow-up interval in which the reassault occurred (OR: 3.5-16.3; p > .0005). Other included time-varying batterer characteristics had no significant effect on reassault. Two significant time-invariant batterer risk factors were (1) severe psychopathology and (2) a history of non-domestic-violence arrest, both measured at intake. Results suggest that batterers' drinking behavior after program intake may provide an important and easily observed marker for risk of reassault and that prediction of reassault with individual risk factors at program intake remains problematical.     

Toxicology and Circumstances of Completed Suicide by Means Other than Overdose*

Abstract: To determine the prevalence and circumstances of psychoactive substances amongst nonoverdose completed suicide, 1436 consecutive cases autopsied at the NSW Department of Forensic Medicine over the period 1/1/1997–12/31/2006 were analyzed. Substances were detected in 67.2% of cases, and illicit drugs in 20.1%. Alcohol was present in 40.6% of cases. Males were more likely to be positive for alcohol, cannabis, and psychostimulants, and females for pharmaceuticals. Illicits were associated with younger age. Alcohol was most prominent amongst toxicity cases, as were opioids, psychostimulants amongst gunshot cases, and pharmaceuticals amongst drownings. Cases in which drug and alcohol histories were noted were more likely to have a substance detected. Alcohol was more common where a suicide note was left and where relationship problems were involved. Pharmaceuticals were more common where a previous attempt was noted. Licit and illicit substances are strongly associated with suicide, even when the method does not involve drug overdose.     

Understanding ‘The Panty Shanty’: off-campus house signs as cultural texts on gender and sexuality

Students at a large, prestigious, public university in the Midwestern region of the USA have a long-standing tradition of naming their rented houses off campus and communicating those names to the student body through displaying prominent and eye-catching house signs. Examples of signs names and visual characteristics are: ‘Betty Ford Clinic’ (featuring an image of a martini glass); ‘Morning Wood’ (referencing male sexual arousal and depicting a tent with a man's legs sticking out); ‘Time Well Wasted’ (written in pink over a beach scene and a martini glass); ‘Fox Den’ (images of a fox tail and a well-known sorority symbol); ‘Tequila Mockingbird’ (a play on words); and ‘Down on U’ (the sign references a sexual act for a house located on University Avenue). Through a socio-feminist and social constructionist perspective, the researchers use content analysis to explore how these house signs serve as cultural texts on gender and sexuality norms in the American undergraduate college setting. Based on our data, house signs reinforce dominant forms of gender ideologies, including hegemonic masculinity and emphasized femininity, both of which are associated with upholding and promoting institutionalized patriarchy (Connell, R. W., &; Messerschmidt, J. W. (2005 Connell, R. W., &; Messerschmidt, J. W. (2005). Hegemonic masculinity: Rethinking the concept. Gender &; Society, 19, 829–859. 10.1177/0891243205278639.[Crossref], [Web of Science ®] , [Google Scholar]). Hegemonic masculinity: Rethinking the concept. Gender &; Society, 19, 829–859). These house signs are also shown through the data to promote a campus culture of heteronormativity where partying, drinking, and casual sex are standards for social belonging, and where high rates of sexual assault persist. As opposed to viewing house signs as simply manifestations of student wit and harmless humor, the researchers critically evaluate if and how these visual displays serve as a mechanism through which gender and sexuality-related inequalities are perpetuated within a higher education institutional setting. Implications for students and their college campuses are discussed.     

The Accuracy of Handheld Pre‐Arrest Breath Test Instruments as a Predictor of the Evidential Breath Alcohol Test Results

Drunk driving is a serious threat to public safety. All available and appropriate tools for curbing this threat should be employed to their full extent. The handheld pre‐arrest breath test instrument (PBT) is one tool for identifying the alcohol‐impaired driver and enforcing drunk driving legislation. A set of data was evaluated (n = 1779) where the PBT instrument was employed in drunk driving arrests to develop a multivariate predictive model. When maintained and operated by trained personnel, the PBT provides a reasonable estimate of the evidential test result within the relevant forensic range (95% prediction interval:  ± 0.003 g/210 L). ROC analysis shows that a multivariate model for PBT prediction of the evidentiary alcohol concentration above versus below the legal limit of 0.08 g/210 L has excellent performance with an AUC of 0.96. These results would be of value in evidential hearings seeking to admit the PBT results in drunk driving trials.     

Effects of Homeopathic Mother Tinctures on Breath Alcohol Testing

In some countries, it is illegal to drive with any detectable amount of alcohol in blood; in others, the legal limit is 0.5 g/L or lower. Recently, some defendants charged with driving under the influence of alcohol and have claimed that positive breath alcohol test results were due to the ingestion of homeopathic mother tinctures. These preparations are obtained by maceration, digestion, infusion, or decoction of herbal material in hydroalcoholic solvent. A series of tests were conducted to evaluate the alcoholic content of three homeopathic mother tinctures and their ability to produce inaccurate breath alcohol results. Nine of 30 subjects gave positive results (0.11–0.82 g/L) when tests were taken within 1 min after drinking mother tincture. All tests taken at least 15 min after the mother tincture consumption and resulted in alcohol-free readings. An observation period of 15–20 min prior to breath alcohol testing eliminates the possibility of false-positive results.