Background: Infertility with the prevalence of 15% is one of the main problems of the society. Preventing job injuries is one of the priorities of public health. Approximately 50% of total cases of infertility and subfertility is related to male. Some of the factors that affect male infertility are environmental. It is very difficult to ascertain the precise cause, but it seems that apart from ...

In this paper we develop and test an encompassing theoretical framework for the explanation of the geographical and temporal spread of extreme right violence. This framework combines internal precipitating factors related to ethnic competition, social disintegration, and political opportunity structures, which make certain localities more prone to exhibit ethnic violence, with diffusion variabl...

Aim: To analysis the relationship between healthy adults right ventricular diameter (RVD) and geographical factors. Location: China’s 22 provinces, municipalities and autonomous regions. Methods: Using correlation analysis the relationship between RVD and nine geographic factors, build predictive models by factor analysis. Results: There is significant correlation between RVD and geographical f...