There are many factors that can influence an individual’s sleep pattern and quantity and quality of sleep. These factors can be cultural, social, psychological, behavioural, pathophysiological and environmental. Sleep patterns can also be influenced by society and by changes within society. In recent times we have seen the introduction of longer working hours, more shift-work and 24-7 availabil...

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.   materials and metho...

Administering medicAtion is one of the most common interventions in health care, but the complexity of the medication process can lead to unintended outcomes (rozich et al 2003, mcBride-Henry and Foureur 2006, sheu et al 2008). in recent years the use of medicines has grown, and there has been an increase in new products available (ndosi and newell 2008). rapid advances in technology and medici...

This study aimed at analyzing the relationship between institutional trust, work engagement and performance of physical education teachers in the cities of Tehran Province. The research had a correlational design. The statistical population of the study was comprised of all physical education teachers in the cities of Tehran Province in 2019-20 school year (1497 individuals). Random sampling me...

the potential sources of cr (vi) are various effluents from metallurgy, electroplating, leather tanning, textile dyeing, paint, ink, and aluminum manufacturing industries. these industrial effluents can contain cr (vi), in the concentration range of 10 to 100 mg/l (nakano et al 2000), which is much higher than the standard limit; 0.5 mg/l in industrial wastewater (epa). in aqueous systems, chro...

Cytokinins have been implicated in many developmental processes and environmental responses of plants, including leaf senescence, apical dominance, chloroplast development, anthocyanin production, and the regulation of cell division and sink/source relationships. They were identified in the pioneering work of Skoog and Miller (1957) by their ability to promote cell division in cultured cells in...

Phase inversion in liquid-liquid dispersions corresponds to the transitional boundary between Oil-in-Aqueous dispersion and Aqueous-in-Oil dispersion. A theoretical model based on simple assumptions was proposed to predict phase inversion point, ambivalence region and the hysteresis effect of inversion. Experimental data from the literature were used to validate the model and results were c...