BACKGROUND China is in the midst of history's largest flow of rural-urban migration in the world; a flow that includes growing numbers of children and adolescents. Their health status is an important public health issue. This study compares self-rated physical and mental health of migrant and local adolescents in China, and examines to what extent layered social connections account for health o...

cooperation in pastoralism and indigenous knowledge of dairy management had been considered for many years in iran and had been adapted with culture and environment of every region. this research had illustrated the analysis of indigenous knowledge and social cohesion in dairy management of grazing livestock in ghasr e yaghub village. research method was a combination of filed studies, direct o...