A lack of recombination leads to the degeneration of an evolving Y chromosome. However, it is not known whether gene loss is largely a random process and primarily driven by the order in which mutations occur or whether certain categories of genes are lost less quickly than others; the latter would imply that selection counteracts the degeneration of Y chromosomes to some extent. In this study,...

This study was conducted in 2016 aimed to investigate the relationship between empowering leadership, uncertainty avoidance, trust, and employee creativity with regard to interaction effects and mediating mechanism. The population consists of 205 employees from the Nomadic affairs of Fars Province. In accordance with the Cochran formula, the sample size of 134 was calculated that were participa...

Previously, we found a positive correlation between the expression of platelet-type 12-lipoxygenase (12-LOX) and the progression of human prostate adenocarcinoma (PCa; Gao et al., Urology, 46: 227-237, 1995). To determine the role of 12-LOX in PCa progression, we generated stable 12-LOX-transfected PC3 cells, which synthesize high levels of 12-LOX protein and 12(S)-hydroxyeicosatetraenoic acid ...

aim and background: this study seeks the effect of teaching problem solving on self-efficacy and perceived self-efficacy in adolescents.   methods and materials: in this quasi-experimental study using three group with pre-test and post-test, on hundred sixty students were randomly selected via multi-stage sampling, and were divided into 64 students of experimental group and 62 students of place...

background: the main purpose of medical education system is that the students achieve the highest levels of learning and professional competency. training of skilled physicians is based on three domains including educational planning, environment, and psychological situation. methods: our study is a descriptive-analysis, conducted on 119 students including medical, nursing and midwifery groups ...