Risk and resilience factors for depression and suicidal ideation in Mongolian college students

There were 16 state and 84 private universities in Mongolian and 67% of high school graduates were enrolled in higher levels of education in 2014 (Ministry of education, 2015). Over 67% of total students who enrolled in the higher levels of education were females. This cross-sectional study is a secondary analysis of data from a research project originally designed to describe the overall health and wellness of college students at a technical college in Ulaanbaatar, Mongolia

Suicidal Plans and Attempts Among Adolescents in Mongolia: Urban Versus Rural Differences

Background: Although 75% of suicides occur in low- and middle-income countries, few studies have examined suicidal behaviors among young people in these countries. Aims: This study aimed to examine what individual characteristics were associated with suicidal plans and attempts among Mongolian youth and whether suicidal risks and behaviors varied by urban and rural locations. Method: Logistic regression analyses were utilized to investigate suicidal plans and attempts among 5,393 adolescents using the Global Student Health Survey – 2013. Results: Adolescents who lived in urban areas were at higher risk for suicidal plans and behaviors than those who lived in rural areas; however, the patterns of suicidal risks were similar. Specifically, individual characteristics, such as being female, feeling lonely and worried, smoking cigarettes, drinking alcohol, and having fights at school, were associated with suicidal plans and behaviors regardless of the residential places. Limitations: A number of important variables have not been included in the questionnaire such as depression, family and parental support, household income, family constructs etc. Conclusion: Given the comparable patterns of risk between urban and rural adolescents and the relatively high rates of suicidal plans and attempts, similar mental health services and interventions are necessitated for both urban and rural areas

Bronze Age population dynamics and the rise of dairy pastoralism on the eastern Eurasian steppe

Recent paleogenomic studies have shown that migrations of Western steppe herders (WSH) beginning in the Eneolithic (ca. 3300-2700 BCE) profoundly transformed the genes and cultures of Europe and central Asia. Compared with Europe, however, the eastern extent of this WSH expansion is not well defined. Here we present genomic and proteomic data from 22 directly dated Late Bronze Age burials putatively associated with early pastoralism in northern Mongolia (ca. 1380-975 BCE). Genome-wide analysis reveals that they are largely descended from a population represented by Early Bronze Age hunter-gatherers in the Baikal region, with only a limited contribution (∼7%) of WSH ancestry. At the same time, however, mass spectrometry analysis of dental calculus provides direct protein evidence of bovine, sheep, and goat milk consumption in seven of nine individuals. No individuals showed molecular evidence of lactase persistence, and only one individual exhibited evidence of >10% WSH ancestry, despite the presence of WSH populations in the nearby Altai-Sayan region for more than a millennium. Unlike the spread of Neolithic farming in Europe and the expansion of Bronze Age pastoralism on the Western steppe, our results indicate that ruminant dairy pastoralism was adopted on the Eastern steppe by local hunter-gatherers through a process of cultural transmission and minimal genetic exchange with outside groups

Aspects of the Photodimerization Mechanism of 2,4-Dichlorocinnamic Acid Studied by Kinetic Photocrystallography

Photoinduced structural variations in single crystals of 2,4-dichloro-trans-cinnamic acid (C9H6Cl2O2, DiClCA) have been investigated using X-ray diffraction (photocrystallography) and optical spectroscopic methods. During UV irradiation, which initiates the irreversible dimerization reaction, a loss of the long-range order of the reactant single crystal was found, i.e., that the dimerization is a heterogeneous one. This unexpected result emphasizes the still-existing problem of predicting changes or of remaining periodicity during chemical reactions in the solid state. On the basis of the experimental results, we propose a qualitative kinetic reaction scheme for DiClCA heterogeneous dimerization reaction

Intégrales de Poisson associées aux opérateurs de Dunkl pour les groupes diédraux

On définit tout d'abord les intégrales de Poisson associées aux opérateurs de Dunkl pour les groupes diédraux d'ordre 2k avec k impair, et l'on résout le problème de Dirichlet relatif à l'opérateur de Laplace associé aux opérateurs de Dunkl. On obtient également le théorème d'unicité correspondant. On donne alors diverses applications de ces résultats. On étudie ensuite, après avoir obtenu des résultats sur la différenciation et les fonctions maximales des mesures de Borel complexes sur le cercle unité du plan complexe relativement aux mesures associées aux opérateurs de Dunkl pour les groupes diédraux, les limites non tangentielles des intégrales de Poisson évoquées ci-dessus.AIX-MARSEILLE1-Inst.Médit.tech (130552107) / SudocSudocFranceF