Many arthropods inhabit caged-layer poultry manure, including pest and beneficial species. The primary pests are the house fly, Musca domestica L., and the darkling beetle, Alphitobius diaperinus (Panzer). The house fly is ubiquitous and rapidly infests newly accumulating poultry manure, often reaching enormous numbers. Flies pester farm workers, birds, and when emigration occurs, neighbors. Th...

We present a model in which monitoring costs determine firms’ outsourcing and offshoring decisions. We predict that the most productive firms outsource in the South, while the least productive produce in-house in the North. Within the range of intermediate productivities, firms with lower productivity outsource in the North, and those with higher productivity perform in-house production in the ...

Results Workers that were directly exposed to flour dust showed a prevalence of rhinitis (57.4%), rhinoconjonctivitis (43.5%), and nocturnal cough (11.0%) significantly higher than the indirectly exposed (43.5%, 14.7% and 5.4%) and controls (37.3%, 11.6% and 6.3%), all p<0.05. 36.8% of flour dust directly exposed workers showed positive SPT to at least one allergens, that was significantly lowe...

 Background: Organic solvents are known as a group of organic compounds, widely used in industry and to which many workers are exposed. Neurotoxicity is one of the most important complications of the chronic exposure to the solvents and may causes neurobehavioral disorders in workers. We have studied the frequency of neurobehavioral disorders in workers exposed to organic solvents in one o...

background: organic solvents are known as a group of organic compounds, widely used in industry and to which many workers are exposed. neurotoxicity is one of the most important complications of the chronic exposure to the solvents and may causes neurobehavioral disorders in workers. we have studied the frequency of neurobehavioral disorders in workers exposed to organic solvents in one of the ...

BACKGROUND Sensitivity and symptoms related to animal proteins have been investigated in various occupational groups. However, data from pet shops are limited. AIMS To investigate rates of sensitivity to cats and dogs among pet shop workers, to assess the relationship between sensitivity, allergen levels and symptoms and to investigate whether passive transport from pet shops to homes is poss...

The inappropriate use of pesticides has created side effects such as resistance to pesticides, outbreak of new or secondary pests, environmental toxicity, and human health issues. The aim of this study was to investigate which factors influence green house workers’ attitudes to pesticide use in a case study of 50 greenhouse workers in Hashtgerd city, Iran. Using Bayesian confirmatory factor ana...

In an investigation of the effect of heavy physical work on the back 217 concrete reinforcement workers aged 25-54 and a reference group of 202 house painters of similar age were interviewed about their back symptoms. Data on occupational history, accidents, and leisure time activities were collected with a questionnaire. The cumulative incidence rate of sciatic pain was significantly higher am...