Alcohol content of beer and malt beverages: forensic consideration

Beer consumption is commonly an issue in a medico-legal setting, requiring estimates either of a likely blood alcohol concentration (BAC) for a given pattern of consumption or vice versa. Four hundred and four beers and malt beverages available for sale in the State of Washington were tested by gas chromatography for their alcohol content. Considerable variability in the alcoholic strength was found, even within the same class. Overall the range of concentrations was 2.92%v/v to 15.66%v/v. The mean alcohol concentration for ales was 5.51%v/v (SD 1.23%v/v), and for lagers, 5.32% (SD 1.43%v/v). Some specialty brews had characteristically higher or lower mean concentrations: ice beers 6.07%v/v, malt liquor 7.23%v/v, light beer 4.13%v/v, seasonal ales 6.30%v/v. Six brands of lager and four light beers account for the majority of all beer sales in the United States, and the mean alcohol concentration for these products was measured as 4.73%v/v and 4.10%v/v respectively. Few of the beers (17%) were labeled with respect to alcohol content, and in some cases, there was a significant disparity between the concentration listed on the label, and the measured alcohol concentration. Toxicologists need to exercise caution when performing Widmark type calculations, using all available information to select the most appropriate estimate for alcoholic strength of a beer or malt beverage.     

Evaluation of prostate-specific antigen (PSA) membrane test assays for the forensic identification of seminal fluid.

Prostate specific antigen (PSA, also known as p30), a glycoprotein produced by the prostatic gland and secreted into seminal plasma, is a marker used for demonstrating the presence of seminal fluid. Methods for the detection of PSA include Ouchterlony double diffusion, crossover electrophoresis, rocket immuno-electrophoresis, radial immunodiffusion, and ELISA. The extremely sensitive ELISA technique can detect PSA in concentrations as low as approximately 4 ng/mL. However, all these techniques are cumbersome and time consuming to perform in forensic laboratories, especially when only a few samples per week are processed. Various membrane tests are currently used in clinical settings to screen a patient's serum for the presence of PSA at levels greater than 4 ng/mL. In this study we evaluated three immunochromatographic PSA membrane tests by analyzing semen stains stored at room temperature for up to 30 years, post-coital vaginal swabs taken at different time after intercourse, semen-free vaginal swabs, and various female and male body fluids, including urine. The data demonstrate that PSA membrane test assays offer the same sensitivity as ELISA-based tests and provide a rapid approach for the forensic identification of seminal fluid. Furthermore, when the supernatant from a DNA extraction is used for the assay, there is essentially no DNA consumption for determining the presence of PSA in a forensic sample.     

The social,behavioral, and health effects of phencyclidine (PCP) use

This study examined the perceived social, behavioral, and health effects of phencyclidine (PCP) use among a sample of 200 users in northern California. The study population, generated through snowball sampling techniques, included heavy chronic, light chronic, and recreational users; the vast majority of subjects were not in treatment facilities. Subjects reported that PCP use—particularly long-term, extensive use—resulted in frequent disruption of education and employment, impairment of relationships with parents and with lovers or spouses, involvement with the criminal justice system, and deterioration of physical and mental health. These findings provide systematic documentation of the extent to which problems previously associated with PCP use occurred among this population of users. In addition, the results illustrate the importance of examining the effects of PCP use in light of the psychosocial developmental processes of adolescence and early adulthood.This research was supported by Research Grant No. DA02293 from the National Institute on Drug Abuse.Received M.S. in psychology from California State University, Hayward.Received Ph.D. from University of Iowa.     

Adolescents and television

This study was divided into two parts. The first part consisted of an investigation of the frequency of television viewing among a sample of 2302 15-year-olds in 12 comprehensive schools. Subjects were divided into two groups, high and low frequency viewers, according to their own estimate of viewing time. The general picture which emerged (with some overlap of scores) was that high frequency viewers tended to be more neurotic and introverted; less intelligent; had less favorable attitudes to school; were less likely to think sport was important; were more likely to be bored in their leisure time; and possessed different social attitudes than low frequency viewers. The second part of the study investigated the program preferences of a subsample of over 900 subjects drawn from the main study. Little difference was found in the program preferences of high and low frequency viewers, but clear differences of preference were found between the sexes.Received his Ph.D. from the University of Aberdeen. Main research interests include social factors influencing education, adolescence, sports psychology, community education, and social psychology.Received her M.Ed. from the University of Aberdeen. Main research interests include community education and television.     

Increase in self-rejection and continuing/discontinued deviant response

It was hypothesized that adoption of deviant response patterns regardless of subsequent continuation of the act would be associated with an antecedent increase in negative self-attitudes. Subjects were seventh-grade students who responded to a questionnaire three times (T ₁,T ₂,T ₃) at annual intervals (N=3,148). Self-attitudes were measured by a seven-item self-derogation scale. Change in self-derogation was determined by expressing the posttest score as a deviation from the posttest-on-pretest regression line. Deviant responses were defined in terms of self-reports of each of 22 highly independent responses. In all cases, as hypothesized, for each of the 22 deviant responses both (1) subjects who adopted and continued the act and (2) subjects who adopted and discontinued the act manifested greater increases in self-derogation than subjects who did not adopt the deviant act. The differences, all of which were in the hypothesized direction, were significant in 34 of the 44 comparisons. The results were interpreted as supporting the position that the adoption of any of a broad range of manifestly dissimilar deviant responses is preceded by the genesis of negative selfattitudes.Received his Ph. D. in sociology from New York University in 1958. Current research interests are social psychiatry and, more specifically, the reciprocal relationship between self-attitudes and the adoption of deviant response patterns.     

Deviant behavior and self-enhancement in adolescence

The hypothesis that “among initially high self-derogation subjects deviant response patterns (alcohol and drug abuse, delinquent patterns, etc.) are related to subsequent decreases in self-derogation” was tested with data from a longitudinal survey study of adolescents. Among higher and lower socioeconomic status (SES) males initially high self-derogation subjects who adopted (relative to those who did not adopt) any of several deviant patterns manifested significantly greater subsequent base-free decreases in self-derogation. For higher SES females only narcotics use (and among lower SES females no deviant pattern) was significantly related to subsequent decrease in self-derogation. Together with collateral data, these results indicated that where the deviant patterns were compatible with valued social roles and the subjects were able to defend against negative responses by others (but not under mutually exclusive conditions), deviant patterns functioned to reduce self-rejecting feelings among initially highly self-derogating subjects.     

Some important variables related to conservation knowledge and interest

This study was an attempt to isolate and identify some important variables related to conservation knowledge and interest in high school age youth. The major goal of this study was to establish some basic variable groups that could provide additional meaning and direction for reintroducing an integrated conservation program into the secondary school curriculum through a more appealing instructional approach. Findings indicated that the assumption of a direct relationship between knowledge and interest does not necessarily hold. Findings also contradict popular assumptions regarding rural-urban, male-female, and age differences in levels of conservation knowledge and interest. Open-ended program approaches based on the variables identified could lead to improved methods for increasing conservation knowledge and interest.Received his M.S. in forestry from Virginia Polytechnic Institute and State University. Major interest is natural resource education.Received his Ph.D. in education from The Pennsylvania State University. Major interests are recreation education and natural resource education.     

Rapid Identification of Synthetic Cannabinoids in Herbal Incenses with DART‐MS and NMR

The usage of herbal incenses containing synthetic cannabinoids has caused an increase in medical incidents and triggered legislations to ban these products throughout the world. Law enforcement agencies are experiencing sample backlogs due to the variety of the products and the addition of new and still‐legal compounds. In our study, proton nuclear magnetic resonance (NMR) spectroscopy was employed to promptly screen the synthetic cannabinoids after their rapid, direct detection on the herbs and in the powders by direct analysis in real time mass spectrometry (DART‐MS). A simple sample preparation protocol was employed on 50 mg of herbal sample matrices for quick NMR detection. Ten synthetic cannabinoids were discovered in fifteen herbal incenses. The combined DART‐MS and NMR methods can be used to quickly screen synthetic cannabinoids in powder and herbal samples, serving as a complementary approach to conventional GC‐MS or LC‐MS methods.     

Determination of the Lewis blood group substances in stains of forensically relevant body fluids

Forensic investigations often demand a clear definition of secretor status. Lewis-typing of secretion stains may help to verify non-secretor results and to identify mixtures of secretions from Le (a-b-) persons and secretors (or non-secretors). Furthermore it gives an additional check on secretor status, determined by ABO-grouping. Few problems may arise, when testing prepared saliva or semen stains. Therefore our interest was focussed on the possibility of Lewis-typing in stains appearing in forensic case work such as cigarette tips, stamps and envelope flaps, semen stains and vaginal swabs, nasal secretion, sweat and urine stains. All stains with the exception of sweat and urine were successfully Lewis-typed. In saliva stains Lewis substances could be determined even after 5 years and in semen stains for at least up to 40 days.