Purpose – Libraries as one of the most important scientific, educational, research, social and cultural centers have an effective role in the development of information, awareness and human knowledge that the realization of their goals requires specialized and experienced managers to increase the effectiveness and efficiency of libraries. Is. But the goals of libraries will not be possible with...

Background: In this study, we seek to identify the challenges of leadership role in physicians. For physicians facing the challenge of being able to appear only as a leader is fraught with challenges. Because they have to follow the clinical duties of the patients at the same time. In fact, we face five major challenges along the way. This article introduces these five challenges and solutions ...

Introduction: The entrepreneurship and self-employment status is an important factor in business growth, in the current situation and in the future due to the economic conditions. To motivate people, an effective education is required. The main goal of this article is identifying the effective methods that can lead people into entrepreneurship. Methods: This study is a descriptive study. ...

one of the applications of nanotechnology is use of carbon nanotubes for the targeted delivery of drug molecules. to demonstrate the physical and chemical properties of biomolecules and identify new material of drug properties, the interaction of carbon nanotubes (cnts) with biomolecules is a subject of many investigations. cnts is a synthetic compound with extraordinary mechanical, thermal, el...