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Wyszukujesz frazę "heat strain" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
A Body Characteristic Index to Evaluate the Level of Risk of Heat Strain for a Group of Workers With a Test
Autorzy:
Lu, S.
Peng, H.
Gao, P.
Powiązania:
https://bibliotekanauki.pl/articles/89730.pdf
Data publikacji:
2014
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
heat environment
physical fitness
anthropometric characteristic
index
heat strain
środowisko cieplne
sprawność fizyczna
antropometria
Opis:
The purpose of this study was to develop a body characteristic index (BCI) based on the distribution of maximal oxygen uptake per body mass (VO2max/mass), body surface area per body mass (BSA/mass), and percentage of body fat (Fat%) to evaluate the relative level of individual physiological responses to heat strain in a group of workers. BCI was based upon the data obtained from 10 males and 10 females exercising for 60 min on a treadmill at 2 relative exercise intensities of 25% and 45% VO2max in mild, warm wet, and hot dry climate condition, separately. BCI was developed into 2 formulas, which were proved to be better predictors for heat strain responses than each individual characteristic, and more sensitive than body type to describe the distributions of individual characteristics and distinguish the differences in physiological responses to heat.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2014, 20, 4; 647-659
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of Duration Limited Exposure for Participants Wearing Chemical Protective Clothing in the Cold
Autorzy:
Rissanen, S.
Rintamaki, H.
Holder, I.
Powiązania:
https://bibliotekanauki.pl/articles/90646.pdf
Data publikacji:
2000
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
IREQ
cold strain
heat storage
thermal sensation
magazynowanie ciepła
odzież zabezpieczająca przed zimnem
odzież ochronna cieplna
Opis:
The suitability of the IREQ (insulation required) index for predicting the thermal responses of 6 participants wearing chemical protective clothing was tested during exercise at -20 and -25 °C. IREQ was used to calculate duration limited exposure (DLE). Measured DLE correlated (r= .899, p < .001) with the predicted DLE. In exposures exceeding 40 min, however, the predicted DLE tended to be 10-20 min too short compared to the measured one. During short exposures the prediction was 5-20 min too long. The results show that IREQ overestimated the cold strain in participants wearing chemical protective clothing during cold exposures longer than 40 min. Nevertheless, predicted DLE never exceeded measured times and thus the prediction was always safe from the occupational point of view.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2000, 6, 4; 451-461
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergonomics in Practice: Physical Workload and Heat Stress in Thailand
Autorzy:
Yoopat, P.
Toicharoen, P.
Glinsukon, T.
Vanwonterghem, K.
Louhevaara, V.
Powiązania:
https://bibliotekanauki.pl/articles/91204.pdf
Data publikacji:
2002
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
ergonomics
heat stress
physiological strain
ciepło
Tajlandia
ergonomia
obciążenie pracą umysłową
stres
praca w wysokiej temperaturze
fizjologia pracy
warunki pracy
Opis:
This study consists of assessments of the thermal environment and physiological strain in tasks associated with airport, construction, and metal jobs. The number of male and female participants was 108. Environmental heat stress was evaluated with the WBGT index. Physiological strain was evaluated by the relative cardiovascular load (%CVL) based on the measurements of heart rate. Also the increase of body temperature, weight loss, and perceived discomfort were determinated. At work sites the assessments lasted for 2 to 4 hrs for each participant. The mean physiological strain exceeded the level of 30%CVL. Severe peaks (over 60%CVL) were observed in specific tasks being in agreement with perceived discomfort ratings. The increase of body temperature and weight loss in most cases remained within acceptable limits. For the most strenuous tasks, various ergonomic improvements were developed in consultation with workers and managers.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2002, 8, 1; 83-93
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Test of Firefighter’s Turnout Gear in Hot and Humid Air Exposure
Autorzy:
Holmer, I.
Kuklane, K.
Gao, C.
Powiązania:
https://bibliotekanauki.pl/articles/90221.pdf
Data publikacji:
2006
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
body temperature
heat stress
physiological strain
protective clothing
odzież ochronna
straż pożarna
pożar
temperatura powietrza
temperatura ciała
stres
zagrożenia zawodowe
strażak
Opis:
Five students of a rescue training school cycled at 50 W for 20 min at 20 oC before walking at 5 km/hr up to 30 min in a climatic chamber at 55 oC and 30% relative humidity. 4 different types of clothing ensembles differing in terms of thickness and thermal insulation value were tested on separate days. All subjects completed 28–30 min in light clothing, but quit after 20–27 min in 3 firefighter ensembles due to a rectal temperature of 39 oC or subjective fatigue. No difference in the evolution of mean skin or rectal temperature was seen for the 3 turnout ensembles. Sweat production amounted to about 1000 g in the turnout gears of which less than 20% evaporated. It was concluded that the small differences between the turnout gears in terms of design, thickness and insulation value had no effect on the resulting heat physiological strain for the given experimental conditions.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2006, 12, 3; 297-305
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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