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- Evaporative Cooling (3)
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Articles 1 - 6 of 6
Full-Text Articles in Medicine and Health Sciences
Validation Of The Usf Safe Exposure Time Equation For Heat Stress, Arden Bruce Andersen
Validation Of The Usf Safe Exposure Time Equation For Heat Stress, Arden Bruce Andersen
USF Tampa Graduate Theses and Dissertations
Heat stress conditions are prevalent in the working environment around the world. Often they are not readily engineered out. Administrative controls and, in extreme/toxic environments, personal protective gear are the means available to protect workers. For every combination of metabolic work rate, clothing ensemble and environmental WBGT, there is a time of exposure threshold, beyond which the worker can no longer compensate for the heat stress, and signs and symptoms of heat strain appear. Increasingly, worker environments require specialty clothing either for worker protection or to maintain a clean/sanitary environment. Prior to the publication of the USF safe exposure time …
Apparent Total Evaporative Resistance Values From Human Trials Over A Range Of Heat Stress Levels, Brian Grace
Apparent Total Evaporative Resistance Values From Human Trials Over A Range Of Heat Stress Levels, Brian Grace
USF Tampa Graduate Theses and Dissertations
Clothing can influence heat stress depending on the design and its ability to act as a barrier. The progressive heat stress protocol permitted the collection of data to empirically estimate the apparent total evaporative resistance (Re,T,a). Five different clothing ensembles were evaluated, which included work clothes, cotton coveralls, and three limited-use protective clothing ensembles including a pthesis-barrier ensemble, (Tyvek® 1424), water-barrier, vapor-permeable ensemble (NexGen® LS 417), and a vapor-barrier ensemble (Tychem QC®). The study design called for three metabolic level's: low, moderate, and high (L, M, & H) and three heat stages: compensable, transitional, …
Apparent Total Evaporative Resistance Values From Human Trials Over A Range Of Metabolic And Heat Stress Levels, Matthew David Dooris
Apparent Total Evaporative Resistance Values From Human Trials Over A Range Of Metabolic And Heat Stress Levels, Matthew David Dooris
USF Tampa Graduate Theses and Dissertations
Failure to maintain thermal equilibrium can cause uncontrollable increases in body core temperature beyond critical upper limits. In selecting clothing, consideration must be given to the heat transfer properties of clothing that may restrict the cooling capacity of the human body under heat stress conditions, most importantly, apparent total evaporative resistance (Re,T,a). This study calculated and compared Re,T,a for five clothing ensembles under varying heat stress conditions, including three relative humidity (RH) levels and three stages of heat stress to determine if Re,T,a values varied or remained the same with …
Literacy And Hazard Communication Comprehension Of Employees Presenting To An Occupational Health Clinic, Christine Bouchard
Literacy And Hazard Communication Comprehension Of Employees Presenting To An Occupational Health Clinic, Christine Bouchard
USF Tampa Graduate Theses and Dissertations
More than 100 million American workers, 7 million workplaces, and 945,000 hazardous chemical products are covered under the Hazard Communication Standard (HCS), regulated by the Occupational Safety and Health Administration. There were a total of 1,183,500 recordable non-fatal illnesses and injuries in private industry workplaces in 2006 resulting in days away from work. Of these, 19,480 were due to chemicals and chemical products. In addition, there were a total of 5,703 work-related fatalities in 2006. In 191 of these, chemicals and chemical products were listed as the primary source of injury and as the secondary source of injury in 104 …
Apparent Total Evaporative Resistance For Clothing Ensembles At High Heat Stress Levels, Patrick Rodriguez
Apparent Total Evaporative Resistance For Clothing Ensembles At High Heat Stress Levels, Patrick Rodriguez
USF Tampa Graduate Theses and Dissertations
Donning protective clothing for mitigation of hazard from chemical agents poses a problem in the form of heat stress. When choosing protective clothing, many factors must be taken into account including insulative properties and evaporative resistance. This study calculated and compared Re,T,a for three clothing ensembles at levels of heat stress past the level of compensation for heat gain to determine if Re,T,a values varied or remained the same with changes in heat stress level. A three-way mixed model analysis of variance demonstrated significant differences for estimated Re,T,a values among ensembles, heat stress levels and interactions among …
Sharps Injuries In Medical Training: Higher Risk For Residents Than For Medical Students, Rachel Williams
Sharps Injuries In Medical Training: Higher Risk For Residents Than For Medical Students, Rachel Williams
USF Tampa Graduate Theses and Dissertations
Because of their relative inexperience in performing procedures and handling sharps devices, medical students and resident physicians are considered to be at high risk for sharps injuries. A higher rate of sharps injuries for medical trainees implies a higher risk for occupationally-acquired infection with bloodborne pathogens and may have financial and legal implications for training institutions. This study examines the prevalence of sharps injuries among US medical students and resident physicians. A systematic review of the literature yielded 10 studies that gave data on sharps injuries for US medical students or residents, and those data were combined with data from …