Background and aims: Musculoskeletal disorders are the most prevalent occupational injuries and disability in the world. One of the most important risk factors of these disorders is awkward posture. Previous studies reported high prevalence of musculoskeletal disorders in medical laboratory personnel. This study was carried out to determine Prevalence and postural risk factors associated with m...

the space now known as complete erdos space ec was introduced by paul erdos in 1940 as the closed subspace of the hilbert space ?2 consisting of all vectors such that every coordinate is in the convergent sequence {0} ? { 1 n : n ? n}. in a solution to a problem posed by lex g. oversteegen we present simple and useful topological characterizations of ec. as an application we determine the ...

چکیده ندارد.

Abstract Background: There are many risk factors that predispose nurses to sleep disorders. In one hand, sleep disorder affects health and safety of nurses and patients and on the other hand, risk factors of this occupations raise the prevalance of sleep disorders and their complications. Materials and Methods: this study was done cross-sectionally on 190 nurses of Imam Khomeini hospital in ...

in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...

Background & Objectives: The rate of suicide varies amongst different parts of Iran. Since there is little knowledge about the risk factors for suicide attempts we carried out this study to determine the status of psychiatric disorders and risk factors of repeated attempted suicide in suicide attempters whom admitted to poisoning emergency in Isfahan, Iran. Methods: Patients with having attempt...

Abstract: Introduction: Musculoskeletal disorders have been devoted high percentage of occupational injuries and it is one of the leading causes of absence from work and disability. In this study we aimed to determine prevalence of musculoskeletal disorders and their risk factors and to evaluate exposure of musculoskeletal disorders risk factors by Rapid Upper Limb Assessment (RULA) Technique...