G cell–derived neurotrophic factor (GDNF), a distant relative of transforming growth factor(TGF), was purified as a factor that promotes the survival and differentiation of embryonic mesencephalic dopaminergic neurons (Lin et al., 1993). A closely related protein, neurturin, was purified as a factor that promotes the survival of sympathetic neurons (Kotzbauer et al., 1996). Subsequently, two ad...

mosquitoes is well known. As Hoffman and Miller comment, ‘We suggest a combination of directed wind and volatile repellent might be developed as a mosquito deterrent strategy for the backyard setting’ [3]. Indeed, the combination of DEET and permethrin in a coconut base (Mosbar) as a malaria control measure looks promising (M. Rowlands et al., unpublished). Volatile oils from plants can serve a...

Environmental pollution has increased many folds in recent years and in some places has reached levels that are toxic to living things. Among pollutant types, toxic heavy metals and metalloids are among the chemicals that pose the highest threat to biological systems (Jjemba 2004). Unlike organic pollutants, which are biodegradable, heavy metals are not degraded into less hazardous end products...

  Background: An important factor in the prevention of industrial accidents is the ability of employees to maintain awareness of the work situation, understand the information it holds, and predict how situations will develop. In the present study, we examined the role of fatalistic beliefs and safety climate in predicting occupational situation awareness (SA) among workers.   Mate...

Stability is a key feature in haptic interaction with virtual environments, since unwanted oscillations can impair realism and, most importantly, may be potentially harmful for the human operator. The issue of stability in this context has been addressed by several authors since the early 90’s (Minsky et al. (1990)) and involves quite a few aspects, since the systems at hand are complex and som...

The aim of this study was to determine the effect of knowledge management capabilities and information technology capabilities on innovative performance with the mediating role of organizational entrepreneurship, organizational learning and competitive advantage. The research method is descriptive-survey. The statistical population consists of all employees of Shimifar Iran Company, and 137 peo...