Catalogo Articoli (Spogli Riviste)
OPAC HELP
Titolo: VALIDATION AND ADJUSTMENT OF THE MATHEMATICAL PREDICTION MODEL FOR HUMAN SWEAT RATE RESPONSES TO OUTDOOR ENVIRONMENTALCONDITIONS
Autore: SHAPIRO Y; MORAN D; EPSTEIN Y; STROSCHEIN L; PANDOLF KB;
 Indirizzi:
 CHAIM SHEBA MED CTR,HELLER INST MED RES IL52621 TEL HASHOMER ISRAEL SACKLER FAC MED TEL AVIV ISRAEL USA,ENVIRONM MED RES INST,ENVIRONM PHYSIOL & MED DIRECTORATE NATICK MA 01760
 Titolo Testata:
 Ergonomics
fascicolo: 5,
volume: 38,
anno: 1995,
pagine: 981  986
 SICI:
 00140139(1995)38:5<981:VAAOTM>2.0.ZU;2K
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 TEMPERATURE;
 Keywords:
 SWEAT RATE; HEAT LOAD; THERMOREGULATION; MODELS;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Physical, Chemical & Earth Sciences
 Science Citation Index Expanded
 Citazioni:
 13
 Recensione:
 Indirizzi per estratti:



 Citazione:
 Y. Shapiro et al., "VALIDATION AND ADJUSTMENT OF THE MATHEMATICAL PREDICTION MODEL FOR HUMAN SWEAT RATE RESPONSES TO OUTDOOR ENVIRONMENTALCONDITIONS", Ergonomics, 38(5), 1995, pp. 981986
Abstract
Based on indoor laboratory studies, a mathematical model to predict sweat loss response was suggested as follows: m(sw) = 27.9E(req)(E(max))(0.455) (g . m(2). h(1)) Under outdoor conditions this model was over estimating sweat loss response in shaded (low solar radiation) environments, and underestimating the response when solar radiation was high (open field areas). The present study was conducted in order to adjust the model to be applicable under outdoor environmental conditions. Four groups of fit acclimated subjects participated in the study. They were exposed to three climatic conditions (30 degrees, 65% rh; 31 degrees C, 40% rh; and 40 degrees C, 20% rh) and three levels of metabolic rate (100, 300 and 450 W) in shaded and sunny areas while wearing shorts, cotton fatigues (BDUs) or protective garments. The original predictive equation for sweat loss was adjusted for the outdoor conditions by evaluating separately the radiative heat exchange, shortwave absorption in the body and longwave emission from the body to the atmosphere and integrating them in the required evaporation component (E(req)) of the model, as follows: Hr = 1.5SL(0.6)/IT (watt) Hl = 0.047M(e.th)/IT (watt), where SL is solar radiation (W . m(2)), M(e.th) isthe Stephan Boltzman constant, and IT is the effective clothing insulation coefficient. This adjustment revealed a high correlation between the measured and expected values of sweat loss (r = 0.99, p < 0.0001).
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 03:34:15