Solid-phase microextraction for the determination of cocaine and cocaethylene in human hair by gas chromatography-mass spectrometry

A method for the simultaneous determination of cocaine (COC) and cocaethylene (CE) in human hair was developed, using solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) as analytical technique to identify and quantify the drugs. Selected ion monitoring (SIM) mode was used to obtain higher sensitivity. The deuterated-labeled analogues were used as internal standards. The detector response was linear for the drugs studied over the range 0.4-15 ng/mg, with correlation coefficients higher than 0.995. The coefficients of variation oscillated between 0.65% and 14.18% and the accuracy was in the range from 0.73% to 11.20%. The limits of quantitation and detection were found to be acceptable. Finally, this method was applied to 15 hair samples from cocaine users, obtaining positive results in all cases. The mean concentrations were 5.39 ng/mg (range: 0.43-8.98 ng/mg) for cocaine and 1.11 ng/mg (range: 0.42-2.23 ng/mg) for cocaethylene.     

Genetic variation of 15 STR autosomal loci in the Maracaibo population from Venezuela

Allele frequencies for 15 short tandem repeats (STRs) autosomal loci (D8S1179, D21S11, D7S820, CSF1PO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, vWA, TPOX, D18S51, D5S818 and FGA, included in the AmpFLSTR Identifiler, Applied Biosystems) were studied in the city of Maracaibo, Venezuela and were compared with other published Latin-American populations for the same loci. Population and forensic parameters were estimated.     

Prior Experiences as Temporal Frames of Reference in Social Justice: The Influence of Previous Fairness Experiences on Reactions to New and Old Supervisors

This paper focuses on the psychology of social change and social justice. Specifically, we focus on subordinates’ reactions to new and old supervisors, and we argue that in evaluating these different types of supervisors, subordinates may rely on prior fair or unfair experiences as temporal frames of reference. We further propose that a result of these frames of reference may be that previous fairness experiences have a bigger impact on subordinates’ reactions to subsequent neutral communications when an old rather than when a new supervisor is the source of that communication. Findings of two empirical studies indeed show that subordinates who had had fair experiences with a particular supervisor reacted more positively toward subsequent neutral messages when the communication was coming from the old supervisor rather than from the new supervisor. Subordinates who had had unfair experiences, however, reacted more negatively toward the communication when the source was the old rather than the new supervisor. Some evidence was also found for contrast effects such that people who react to a new supervisor may react more positively with the neutral demand from this authority figure when they have earlier experienced unfair as opposed to fair treatment by a different supervisory agent. These findings were obtained on subordinates’ satisfaction with the supervisors’ communication and their acceptance of the supervisor. Finally, we discuss the implications for the psychology of social change and social justice.     

Population genetic data for 18 STR loci in Costa Rica

Allele frequencies for 18 STR autosomal loci (D3S1358, VWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317, D7S820, D16S539, TH01, TPOX, CSF1PO, Penta D, Penta E, D19S433, D2S1338 and SE33) were obtained from a sample of 191-500 unrelated individuals from Costa Rica, Central America.     

Clientelism or Something Else? Squatter Politics in Montevideo

Through the in‐depth ethnographic study of one squatter neighborhood in Montevideo and its leader's political networks, this article illustrates a successful strategy through which some squatter neighborhoods have fought for their right to the city. This consists of opportunistic, face‐to‐face relationships between squatter leaders and politicians of various factions and parties as intermediaries to get state goods, such as water, building materials, electricity, roads, and ultimately land tenure. Through this mechanism, squatters have seized political opportunities at the national and municipal levels. These opportunities were particularly high between 1989 and 2004, years of great competition for the votes of the urban poor on the periphery of the city, when the national and municipal governments belonged to opposing parties. In terms of theory, the article discusses current literature on clientelism, posing problems that make it difficult to characterize the political networks observed among squatters.     

Morphologic patterns of lip prints in a portuguese population: a preliminary analysis

Lip prints are thought to have the ability to distinguish individuals and, hence, have a potential use in human identification purposes. However, questions remain regarding their utility for sex determination. This study aimed to classify lip prints for different individuals in a Portuguese population and to determine whether sex differences exist. Lip prints of 25 females and 25 males were obtained using dark-colored lipstick and cellophane tape. Lip prints were analyzed using a magnifying lens and classified according to the Suzuki and Tsuchihashi classification. A Type II pattern was found to be most common. A comparison of lip-print patterns between males and females showed results with a statistically significant difference: Type III pattern was most common in males, and a Type II pattern in females. This study corroborates the hypothesis that lip prints are able to distinguish individuals and may be useful in sex determination.     

Gendered Paths to Legal Citizenship: The Case of Latin‐American Immigrants in Phoenix,Arizona

In this paper we seek to contribute to a greater understanding of legal citizenship by exploring the gendered experiences of Latin‐American‐origin immigrants in the greater Phoenix metropolitan area as they go through the legalization process. To explore this gendered angle we rely on in‐depth interviews conducted from 1998 through 2008 with women and men from Guatemala, El Salvador, Honduras, and Mexico. The data reveal that although immigration policies and procedures are presumably gender neutral, they are in fact inflected with gendered meanings and enacted in gendered social structures. Gender ideologies permeate the processes to differentially affect the legalization, permanent legal residence, and citizenship processes of immigrant women and men. This article points to key gender inequalities in immigration law.