risk assessment and management techniques are used in industrial activities to reduce accidents by applying preventive and protective methods. in this article a preventive approach called hazard and operability study (hazop) was used. the application of hazop, a process hazard identification and control method, has been demonstrated in the fatty acid unit of golnar oil company, northwest of teh...

abstract background: nowadays, caregivers’ general health has an influential impact on patients’ and attendants’ education as well as the management of chronic diseases. this study aimed to design, develop and evaluate an android application based on a user-led approach to educate caregivers of children with cerebral palsy. methods: to conduct this applied developmental study, we first assessed...

OBJECTIVE To demonstrate the potential of de-identified clinical data from multiple healthcare systems using different electronic health records (EHR) to be efficiently used for very large retrospective cohort studies. MATERIALS AND METHODS Data of 959 030 patients, pooled from multiple different healthcare systems with distinct EHR, were obtained. Data were standardized and normalized using ...

background advocacy coalitions play an increasingly prominent role within the global health landscape, linking actors and institutions to attract political attention and resources. this paper examines how coalitions negotiate among themselves and exercise hidden forms of power to produce policy on the basis of their beliefs and strategic interests.   methods this paper examines the beliefs...

one of the important aspects of the medicinal plants production is using less chemical inputs. it could be effective for increasing of production and environmental purposes. in order to investigate the effects of application time of integrated chemical fertilizer with cattle manure on growth, yield and yield components of black cumin (nigella sativa l.), an experiment was conducted based on a r...

stress and mental health at the place of work have received great attention by researchers. in spite of technology improvement in high-tech systems, the operators face new problems, which can affect mental health. there is hardly any published research about stress or mental health in such workplaces in developing countries. this paper presents the application of the self-rating scale general h...