Union Affiliation,Socialization, and Political Identities: The Case of Mexico

The literature on voting behavior has generally accepted that party identification largely determines voter choice. While many studies have found that party identification is largely transmitted through social learning, less studied are the processes of the construction of party identity by way of group membership. This study seeks to understand how group identity influences party identification among Mexican workers through an analysis of the effects of union affiliation on political behavior. It assesses the utility of corporatist legacies in explaining party identity in Mexico and provides a first assessment of party affinities among independent unionists. The evidence draws from original survey data collected during six demonstrations in Mexico City. The study finds that union membership does condition the party identity of corporatist workers but not that of independent unionists.     

Hemolyzed blood and serum levels of delta 9-THC: effects on the performance of roadside sobriety tests

A pilot study was conducted to ascertain the range of induced hemolyzed blood/serum delta 9-tetrahydrocannabinol (delta 9-THC) concentrations in 58 human subjects. Subjects were tested within 5 min of smoking a delta 9-THC cigarette and then at half-hour intervals to 150 min. The subjects initially demonstrated a broad range of delta 9-THC hemolyzed blood levels, which settled within an hour to levels comparable to those measured in California drivers who had been stopped for impaired driving, arrested, and tested for delta 9-THC. Serum levels, when correlated with performance or roadside sobriety tests, demonstrated a broad range (5 to 183 ng/mL) of delta 9-THC levels and an "adaptation" effect in the subjects' perception of their own impairment. Although this preliminary study was not a double-blind placebo experiment, the overall performance of human subjects demonstrated the "adaptation" effect, which may be a significant factor in making judgments while performing such complex tasks as driving. Also, the effects of the drug extended beyond the period of elevated delta 9-THC blood levels, perhaps because of THC metabolites that may contribute to impairment or the persistence of THC in the central nervous system. This pilot study will lay the groundwork for a program designed to determine the epidemiology and behavior correlates of marijuana use in motorists.     

Expert systems for medical diagnosis: A study in technology transfer

Expert systems continue to evolve for specific applications in medical diagnosis. This is necessary because the influx of new information is so massive that the expert systems must be specialized. The research methodology for this study was based on the usage patterns of expert systems in clinical pathology with data obtained at 94 US medical schools from 202 medical-school-based clinical pathologists. The study showed the link between the use of expert systems in medical schools and within the professional medical community. Initial education in medical schools and ongoing communications through residency programs, post-doctoral fellowships and clinical usage at university hospitals with the goal of technology transfer between medical schools and physicians, seem to represent the future for this valuable diagnostic technique.     

microRNA Detection in Blood,Urine, Semen,and Saliva Stains After Compromising Treatments

Evaluation of microRNA (miRNA) expression as a potential method for forensic body fluid identification has been the subject of investigation over the past several years. Because of their size and encapsulation within proteins and lipids, miRNAs are inherently less susceptible to degradation than other RNAs. In this work, blood, urine, semen, and saliva were exposed to environmental and chemical conditions mimicking sample compromise at the crime scene. For many treated samples, including 100% of blood samples, miRNAs remained detectable, comparable to the untreated control. Sample degradation varied by body fluid and treatment, with blood remarkably resistant, while semen and saliva are more susceptible to environmental insult. Body fluid identification using relative miRNA expression of blood and semen of the exposed samples was 100% and 94%, respectively. Given the overall robust results herein, the case is strengthened for the use of miRNAs as a molecular method for body fluid identification.