School structure, bullying by teachers, moral disengagement, and students' aggression: A mediation model.

Aim: Understanding interrelations between the factors predicting students' aggressive behavior is a priority for bullying-prevention programs. Our study explores two possible mechanisms linking school disciplinary structure and students' aggression. We test students' moral disengagement and bullying by teachers as mediational pathways from school authoritative discipline to students' aggressive behavior.

Peer influence in adolescent drinking behavior: A meta-analysis of stochastic actor-based modeling studies.

Objectives: To measure the effects of peer influence and peer selection on drinking behavior in adolescence through a rigorous statistical approach designed to unravel these interrelated processes.

Methods: We conducted systematic searches of electronic databases, thesis collections and conference proceedings to identify studies that used longitudinal network design and stochastic actor-oriented modeling to analyze drinking behavior in adolescents. Parameter estimates collected from individual studies were analyzed using multilevel random-effects models.

Peer influence in adolescent drinking behaviour: a protocol for systematic review and meta-analysis of stochastic actor-based modeling studies.

Introduction: Alcohol consumption is a considerable public health problem that is especially harmful to young people. To develop effective prevention programmes targeted at adolescents, it is important to understand the social mechanisms triggering alcohol consumption. Among such mechanisms, peer influence plays an important role.

Vocational education paths, youth activities, and underage drinking in Russia: How early does the trouble start?

Working-class educational paths tend to be associated with elevated drinking. Little research has examined whether disproportionate alcohol use among vocationally oriented youth begins before or after the start of their vocational education. The present study analyzes a large sample of Russian middle-school students (N=1269; mean age=14.

Molecular phylogenetic analyses indicate a wide and ancient radiation of African hepatitis delta virus, suggesting a deltavirus genus of at least seven major clades.

Hepatitis D virus (HDV) is a satellite of hepatitis B virus (HBV) for transmission and propagation and infects nearly 20 million people worldwide. The HDV genome is a compact circular single-stranded RNA genome with extensive intramolecular complementarity. Despite its different epidemiological and pathological patterns, the variability and geographical distribution of HDV are limited to three genotypes and two subtypes that have been characterized to date.

Hepatitis delta virus genotypes I and II cocirculate in an endemic area of Yakutia, Russia.

Currently, three genotypes of hepatitis delta virus (HDV) are described. The most common, genotype I, has a worldwide distribution; in contrast, genotype II has been found previously only in Japan and Taiwan, while genotype III is found exclusively in South America. Considering the high prevalence of HDV in Northern Siberia (Russia), restriction fragment length polymorphism (RFLP) was used to analyse HDV genotypes from 29 infected patients living in Yakutia.