background: spermatogonial stem cells (sscs), a subset of undifferentiated type a spermatogonia, are the foundation of complex process of spermatogenesis and could be propagated in vitro culture conditions for long time for germ cell transplantation and fertility preservation. objective: the aim of this study was in vitro propagation of human spermatogonial stem cells (sscs) and improvement of ...

Culture is one of the factors tourists consider to choose their destination, and what is the level of cultural Host community and cultural differences compared to what other nations. Therefore, recognizing the culture of the society itself is one of the ways in which it can attract the tourists by refining its competitive advantages and by stepping up the knowledge of the weaknesses in or...

Introduction: The formation and evolution of culture in organizations are related to the learning experiences of their members over time. In this regard, the present study was conducted to empirically investigate the correlation relationship between the Learning Organization (LO) and safety culture concepts in Iran’s nuclear and radiological industries. Material and Methods: A theoretical mode...