BACKGROUND CONTEXT Low back pain (LBP) is a prevalent and costly musculoskeletal disorder that often occurs in the working-age population. Although numerous physical activities have been implicated in its complex etiology, determining causation remains challenging and requires a methodologically rigorous approach. PURPOSE To conduct a systematic review of the scientific literature focused on ...

The objective of this paper is to examine measurement issues and data problems in the analysis of trends in male mortality differentials by socio-economic group (SEG) in Ireland between 1981 and 1991. The study is based on mortality data supplied by the Central Statistics Office and population data taken from the 1981 and 1991 Census. The recording of the occupation of decedents worsened betwee...

This paper discusses 2 heuristic job rotation procedures for preventing industrial workers from being excessively exposed to ergonomics and safety hazards in their workplaces. The objective of the procedures is 2-fold: (a) to find a minimum number of workers required for the given set of jobs, and (b) to determine a set of safe worker-job-period assignments such that all workers' exposure to ha...

Self-concept development from childhood to adolescence was studied from a cognitive-structural perspective. The responses of subjects to the question "Who am I?" were analyzed by means of a 30-category scoring system. Between childhood and adolescence, there was a significant increase in self-conceptions categorized as follows: occupational role; existential, individuating; ideological and beli...

Two categories of reference limits can be discerned in biological monitoring: The first category identifies individuals who have been exposed to a toxic agent at work, and is based on the distribution of the concentration of the agent or its metabolite in the population that has not been exposed to the agent at work. The second category, for which the term biological action level (BAL) is propo...

Occupational accidents, especially in the construction sector, are a worldwide phenomenon. There is large and important collection of repeated studies at an international level, which has identified categorized accident contributing factors different countries individually. This paper quantitative meta-analysis data from existing research that identifies ranks comprehensive list main to occupat...

Work-related stress is experienced when the demands of the work environment exceed the employees’ ability to cope with (or control) them. Recently, in DSM5, disorders which are precipitated by specific stressful and potentially traumatic events in the workplaces are included in a new diagnostic category, “Trauma and Stress-related Disorders”, which includes both Adjustment Disorders (Ads) and P...

Objective Exposure to extremely low-frequency electromagnetic fields (ELF-EMF) was in 2002 classified as a possible human carcinogen, Group 2B, by the International Agency for Research on Cancer at WHO based on an increased risk for childhood leukemia. In case-control studies on brain tumors during 1997-2003 and 2007-2009 we assessed lifetime occupations in addition to exposure to different age...

In this article, we outline work that led the QSAR and Molecular Modelling Group at Liverpool John Moores University to be jointly awarded the 2013 Lush Science Prize. Our research focuses around the development of in silico profilers for category formation within the Adverse Outcome Pathway paradigm. The development of a well-defined chemical category allows toxicity to be predicted via read-a...

background :this study aimed to understand the confront strategies of parents of premature infants hospitalized in nicu.   methods : this study was performed using qualitative content analysis approach. twelve participants including nine parents whose infants were hospitalized in nicu, two nurses and one physician, all selected by purposive sampling method were interviewed by a female expert oc...