Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 271 for “"Heat Stress"”.
-
Physiological responses to intermittent heat stress
Typescript (photocopy).
-
Physiological responses to intermittent heat stress
Typescript (photocopy).
-
Evaluation of Heat Stress in Migrant Farmworkers
<p>The rate of heat-related fatalities in crop production workers is almost 20 times that of other industries. Heat stress was investigated in migrant tomato workers in July, 2012, using measurements of body temperature, heart rates, body weight loss, evaluation of the thermal environment, and …
-
Heat stress: A risk factor for skin carcinogenesis
… with high environmental temperatures. Thus, heat stress may potentiate the effects of UV exposure and act as an additional risk factor for skin cancer. Previous studies in mice have shown that repeated and concurrent exposure to UVB and heat stress, increases the rate and incidence of …
-
The Impact of Heat Stress on Immune Function
… crisis and its implications for global health. Heat waves are becoming increasingly common, intense and long. High ambient temperatures can not only shape pathogen dynamics but also induce a stress response in the host, which may compromise vaccine responsiveness and increase vulnerability to …
-
The Effects of Heat Stress on High Oil Corn
… set at 35°C, a temperature representing heat stress during grain fill. There was no significant difference in oil content between the two different temperatures.
-
Mechanisms Regulating the Response of Arabidopsis thaliana to Heat Stress
Abiotic stresses cause extensive losses to agricultural production worldwide. Acclimation of plants to abiotic stresses is mediated by a complex network of transcription factors and other regulatory genes that control multiple defense and acclimation pathways. Although, previous studies uncovered a …
-
Using Silvopasture to Mitigate Heat Stress in Grazing Beef Cattle
… the impact of silvopasture on mitigating heat stress in grazing beef cattle by comparing physiological and behavioral responses between shaded and non-shaded pastures. Twenty-two multiparous cows were monitored over a 20-day summer trial in East Texas. Data were collected on respiration …
-
Heat Stress Induced Fetal Dwarfing and Uterine Blood Flow in Sheep
… if restricted feed intake would alleviate heat induced dwarfing. Birthweight adjusted for sex and litter size was reduced 1.8 kg in trial 1 (P < .05) and 1.9 kg in trials 1 and 2 combined (P < .06) with maternal heat stress. Lamb sex, litter size, lamb condition and gestation length were …
-
Metabolic and endocrine adaptations to heat stress in lactating dairy cows
Heat stress (HS), a stress response in homeotherms mainly due to elevated ambient temperature and failure of effective heat dissipation, causes a substantial negative economic impact to livestock industry worldwide. Reduced feed intake, a typical phenomenon observed during HS, was thought to be the …
-
Physiological consequences of exposure to heat stress and the mycotoxin zearalenone
Heat stress is detrimental across many, if not most aspects of animal agriculture. Heat stress can have direct effects on the animal, effects on their environment and effects on the feedstuffs they consume. The work presented here will address direct effects on the animal (using dairy cattle) and …
-
The effects of heat stress on operator perceived workload in tracking
… actual changes in mental workload on tracking in heat. Finally, results showed that tracking performance decrement occurred at a lower temperature (29°C (85°F) WBGT) than did the perception of significant mental workload on tracking (which occurred at 34°C (93°F) W8GT).
-
Morpho-Physiological responses of spring wheat(Triticum Aestivum L.) to heat stress
Constant or transitory high temperatures affect wheat growth and development leading to diverse morphological, physiological and biochemical changes that eventually decrease grain yield. It is against this background that this study was conducted to identify morpho-physiological traits associated …
-
Morpho-Physiological responses of spring wheat(Triticum Aestivum L.) to heat stress
Constant or transitory high temperatures affect wheat growth and development leading to diverse morphological, physiological and biochemical changes that eventually decrease grain yield. It is against this background that this study was conducted to identify morpho-physiological traits associated …
-
The Effect of Uncompensable Heat Stress On Fatigue, Physiological, and Perceptual Measures
<p><strong>Context:</strong> Exercise in the heat causes physiological and perceptual changes which can indicate decreased performance or heat illness. Understanding the signs of heat stress is important for those who exercise in the heat.</p> <p><strong>Objective:</strong> To examine the effects …
-
Heat Stress Effects on Cotton During Reproductive Development and Subsequent Acclimation Responses
<p>High temperature stress is among the most difficult to control abiotic factors affecting crop yields in the Southern United States due to its wide regional influence. Cotton (Gossypium hirsutum L.) though a tropical plant in origin, it is sensitive to the effects of high temperature. This is of …
-
Spatially explicit humid heat stress projections in urban environments under climate change
… experience diverse microclimates and enhanced heat stress. Urban modification of the environment has commonly been explored through local and regional studies using air temperature and the urban heat island effect, a phenomenon in which an urban area is hotter than its rural surroundings. Here, …
-
Molecular responses of neonatally heat stressed broilers exposed to acute heat stress
… age increases their survival when exposed to a heat challenge at 6 weeks of age (35.0-37.8 C; RH 50% ). This' phenomenon does not resemble acclimation since the physiological changes known to occur in acclimated birds exposed to heat have not been observed in the neonatally stressed birds. A …
Page 1 of 14