in recent years, entrepreneurship in it industry has been viewed as a prime factor of economic development. since opportunity recognition is a critical step in entrepreneurship, identification of effectual factors in opportunity recognition is of great significance. the main objective of this study is to examine the effects of individual and social factors in opportunity recognition in it indus...

background: millions of workers are the victims of different kinds of accidents every year throughout the world. the purpose of this study was to investigate the relationships between safety attitude and occurrence of the occupational accidents. methods: this investigation was a cross-sectional study performed in a gas refinery in south of iran in 2008. sample size of this study was 176 people....

Introduction: Orthodontic treatment has many clear benefits for reinforcement the function, esthetics, and self-respect in patients. However, as any treatment, there are risks complications associated with such it can cause gingivitis, enamel demineralization tooth decay. Supreme self-care brushing interdental cleaning using adjuncts besides regular professional must be strengthened. Comparing ...

Background: This study consists of two parts. The first part deals with both qualitative and quantitative analysis of 226Ra using alpha spectrometry measurement method. In the second part, the percentage of radioactive equilibrium between 226 Ra and its daughter products were determined by alpha spectrometry and total alpha measurement system after elapsed time of 15 days from precipitation. Ma...

the increasing trend in agricultural wastes is one of the most important challenging problems in most countries, especially the developing ones. policymakers and researchers being on the alert, do their best to reduce these wastes. the main purpose followed in this study, done in 2007, was to investigate the factors affecting the level of wastes of apple in zanjan province, iran. the study popu...

BACKGROUND The Achilles tendon Total Rupture Score was developed by a research group in 2007 in response to the need for a patient reported outcome measure for this patient population. Beyond this original development paper, no further validation studies have been published.Consequently the purpose of this study was to evaluate internal consistency, convergent validity and responsiveness of thi...