background: the nature of work in the construction industry is closely associated with many human factor hazards. manual construction workers are exposed to hand-arm vibration, repetitive movements, holding of heavy loads and tools, and frequent manual materials handling hazards in their daily tasks. work related musculoskeletal disorders are major problems faced by construction workers, which ...

a simple emergency risk prediction tool should be developed for clinicians to quickly identify the prognosis of patients with acute aortic dissection.we enrolled 280 patients with acute aortic dissection admitted to emergency department between may 2010 and february 2013. multivariate logistic regression analysis was performed to identify independent predictors of in-hospital death.the in-hospi...

conclusions prevalence of speech and language delay is high (27%) in children less than three years of age attending the under-five clinic for at-risk children. negative home environment and family history of speech and language disorders are significant risk factors for speech and language delay. the strong association of speech delay with delay in tdsc reemphasizes the need for a complete dev...

background nasal colonization of healthy children with staphylococcus aureus is an important risk factor for different infections. detection of colonized individuals with methicillin resistant s. aureus (mrsa) and its eradication is the proper prevention strategy for infection spread in the community and health-care centers. objectives the aim of this study was to determine the prevalence, asso...

conclusions the results of this study show a considerable prevalence of chronic pain among adults in tehran. therefore, it is necessary to pay more attention to different types of chronic pain by planners and policy makers. background chronic pain has been estimated to affect between 2% - 40% of the adult population and its prevalence is increasing. objectives this study aimed to provide epidem...

objective: the prevalence of obesity is rising in both developed and developing countries. globally, it is estimated that nearly one billion adults are overweight at least 300 million of them are clinically obese. in afghanistan no published data is available regarding non-communicable diseases including obesity. this paper reports the prevalence and associated risk factors of obesity among adu...

asthma, which is mainly distinguished by airway inflammation and bronchial hyper responsiveness, is known as one of the most common chronic diseases worldwide. it also is the most frequent chronic respiratory disorder amongst all age groups. on one side of the asthma story, there are massive investment of time, effort and money, a large number of pharmaceutical and academic research studies, he...

Extinctions are a part of life on earth. Indeed, over 99.9% of all species that once existed have gone extinct. However, humans are doing a good job in helping species into early extinction. In this talk, I fist review some classic mass extinction, and then review ecology and genetic risk factors for extinction. I finish by discussing how to assess (and defend) a species risk assessment and wit...