Objective. To analyze the climate in last thirty years Northwest of Minas and its impacts on dairy production. Materials Methods. The database National Institute Meteorology was used during period from 1985 to 2017 cities Unaí, Paracatu, Arinos Formoso/MG. For each month year, average minimum temperature (Tmin), maximum (Tmax), relative humidity (RH), Temperature Humidity Index (THI), Wet-bulbe...

heat stress particularly  at  outdoor  workplaces in hot-dry    climates can  disrupt    the physical or mental functions and effect negatively on human performance. we aimed to study the effect of heat stress on productivity loss among workers of brick workshops in qom province – central iran. this cross-sectional descriptive and analytic study was performed on 184 workers in 40 brick workshop...

abstract background: heat is one of the most important of harmful agents in many working environments such as bakeries that can cause prevalence of diseases related to heat and falling of efficiency. aim of this study was exposure evaluation of isfahan bakers to heat stresses in their working environment through evaluation of relationship among wet bulb globe temperature index (wbgt) , oral tem...

One of the most critical variables in field thermal comfort measurements is mean radiant temperature which typically measured with a standard 150 mm black globe thermometer. This also reference instrument required for assessment heat stress conditions by means well-known Wet Bulb Globe Temperature index (WBGT). However, one limitations this method represented relatively long response time. why ...

Threshold limit values (TLVs) are intended to protect workers from the severest effects of thermal stress and to establish the exposures to heat in working conditions. Earlier, acute heat strokes often occurred as a result of working in hot environments in Japan. However, acute heat strokes recently sometimes occurred in outdoor work environments such as industrial constructions and agriculture...

The focus of this review is upon acute exposure to hot environments and the accompanying physiological changes. The target audience includes physiologists, physicians and occupational health and safety practitioners. Using the principles of thermodynamics, the avenues for human heat exchange are explored, leading to an evaluation of some methods used to assess thermally-stressful environments. ...

To elucidate the subjective thermal strain of workers in kitchen working environments, we performed a cross-sectional study involving 991 workers in 126 kitchen facilities in Japan, using a self-reporting questionnaire survey and subjective judgment scales (SJS). The ambient temperature, mean radiant temperature (MRT), and wet-bulb globe temperature (WBGT) index were measured in 10 kitchen faci...