نتایج جستجو برای: wbgt index

تعداد نتایج: 396212  

Journal: :Energy and Buildings 2021

Uncontrolled solar radiation and the related effects on occupant productivity can lead to considerable indoor thermal discomfort in office environments. In this paper, Radiance Daylight Coefficient (DC) method is used assess incoming consequent through delta mean radiant temperature (ΔMRT). The ΔMRT allows expressing an adjusted predicted vote (Adjusted PMV). Under conditions of direct radiatio...

ژورنال: Journal of Research and Health 2017

Heat stress is one of the harmful factors in workplaces. Asphalt workers are exposed to thermal stress due to the open environment and process. The aim of this study was to assess the heat stress and strain in asphalt workers. This study was conducted on 29 employees of asphalt workstation. The heat stress was measured based on Wet-Bulb Globe Temperature (WBGT). Also, physiological parameters s...

ژورنال: طب کار 2016
امیدی, لیلا, بشاش, داوود, جعفری, محمد جواد, خداکریم, سهیلا, عبداللهی, محمد باقر, نورلویی, سحر,

Introduction: Heat-related diseases are common disorders in many industries. Heat stress can cause changes in the secretion of some plasma hormones. The aim of this study was to determine the effects of heat stress on concentrations of serum triiodothyronine (T3) and thyroxine (T4) hormones among foundry workers. Methods: This cross sectional study was carried out with 35 workers of a foundr...

Journal: :Industrial health 2013
Subhashis Sahu Moumita Sett Tord Kjellstrom

Excessive workplace heat exposures create well-known risks of heat stroke, and it limits the workers' capacity to sustain physical activity. There is very limited evidence available on how these effects reduce work productivity, while the quantitative relationship between heat and work productivity is an essential basis for climate change impact assessments. We measured hourly heat exposure in ...

Journal: :Ergonomics 2002
Ioannis Vasmatzidis Robert E Schlegel Peter A Hancock

A study was conducted to investigate the effects of heat stress on time-sharing performance. Twelve participants performed three dual-task scenarios and a multiple-task scenario for 2 h in each of six climates. The climates were obtained by generating each of three wet bulb globe temperatures (WBGT; 22, 28 and 34 degrees C) with two relative humidity levels (30 and 70%). The dual tasks selected...

2009
Tord Kjellstrom Ingvar Holmer Bruno Lemke

BACKGROUND Global climate change is already increasing the average temperature and direct heat exposure in many places around the world. OBJECTIVES To assess the potential impact on occupational health and work capacity for people exposed at work to increasing heat due to climate change. DESIGN A brief review of basic thermal physiology mechanisms, occupational heat exposure guidelines and ...

2017
Mehdi Asghari Parvin Nassiri Mohammad Reza Monazzam Farideh Golbabaei Hossein Arabalibeik Aliakbar Shamsipour Armin Allahverdy

BACKGROUND Heat stress as a physical harmful agent can increase the risk of health and safety problems in different workplaces such as mining. Although there are different indices to assess the heat stress imposed on workers, choosing the best index for a specific workplace is so important. Since various criteria affect an index applicability, extracting the most effective ones and determining ...

Journal: :Environmental health perspectives 2022

BACKGROUND AND AIM Heat stress (HS) is associated with adverse health outcomes among agricultural workers, including acute kidney injury (AKI). The aim on this study was to estimate the incidence of AKI over course work shift and association HS workers in Spain, where summer temperatures are high heat waves expected be more frequent. METHODS Male were enrolled two different periods provinces: h...

Journal: :international journal of occupational hygiene 0
farideh golbabaei department of occupational health, school of public health, tehran university of medical sciences, tehran, iran. mohammadreza monazzam department of occupational health, school of public health, tehran university of medical sciences, tehran, iran. rasoul hematjo school of public health, bushehr university of medical sciences, bushehr, iran. mostafa hosseini department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran. somayeh fahang-dehghan department of occupational health, school of public health, tehran university of medical sciences, tehran, iran.

heat stress is well recognized among the hazardous physical agents that might be present during work. this study aims to compare wbgt index at acclimated and unacclimated people to permissible threshold limit value and study the differences between physiological parameters at them. twenty one healthy men were participated in the study. all of the subjects were monitored in two different weather...

بلقن آبادی, سمیه, تیزرو, مهدی, محمدی, علی اکبر, پور, مهدی,

Introduction: during the physical activity in hot environments, sweating with evaporation, the important physiological response of the body  increases which can be lead to dehydration . Long-term water shortages could adversely affect vital organs. The aim of this study was to determine heat stress and dehydration status of workers in hot workplaces. Methods: This cross sectional study ...

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