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.
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Showing 1 to 20 of 33 for “"Exposure risk"”.
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Confidence intervals for exposure risk assessment
The problem of estimating exposure to a pollutant involves estimation of chemical intake Q. Typically, Q has the form Q = q11q12&cdots;q 1r1/q211q22 &cdots;q2r2t where all thetaij's are unknown means of certain random variables. In assessing the risk to human health from exposure to the pollutant …
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Using serious games to prime safety students for occupational noise exposure risk assessment
… to enhance the training for occupational noise risk assessments. A simulator titled AssessVR, a PC-based application was created to enhance the learning experience of students and safety workers in identifying hazards and assessing risks. This simulator enables students to engage in hazard …
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Chemical exposures in drinking water: contaminant analysis and physicochemical behavior
Environmental chemical exposures pose an understudied risk to human health. The quality and accessibility of data on occurrence in the environment and physicochemical behavior of industrial chemicals are integral for accurate exposure risk assessment. In this dissertation, analytical chemistry …
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Quantifying Air Distribution, Ventilation Effectiveness and Airborne Pollutant Transport in an Aircraft Cabin Mockup
… of pollutant source, and air supply rate. Exposure risk was significantly reduced with increased distance between source and receptors. Another possible way to decrease the exposure risk was to position the release source close to the exhaust outlets. Increasing the air supply rate could be …
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An Epidemiological Study Of Collegiate Women's Basketball Injuries
… relationship between injury rates and specific risk factors. Method: Baseline data were collected on the basketball team through pre-participation physical, medical history questionnaires, and a balance measurement. The players were followed throughout their regular season and all injuries and …
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Relationship between urinary levels of organophosphate metabolites and pesticide exposures among rural school boys of the Western Cape
… is an objective measure of short-term pesticide exposure as it measures possible exposure in the human body. Current evidence on the relationship between demographic, socio-economic and pesticide exposure risk factors and urinary levels of organophosphate (OP) pesticide metabolites among children …
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The Challenges and Opportunities in Monitoring and Modeling Waterborne Pathogens in Water- and Resource-Restricted Africa: Highlighting the critical need for multidisciplinary research and tool advancement
… across the landscape and can facilitate shared exposure to a community of waterborne pathogens. Despite remarkable global progress in sanitation and hygiene development in the past two decades, infectious diarrhea remains a prominent public health threat in sub-Saharan Africa. This thesis …
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Factors Associated with Pollinator Foraging and Floral Morphology of Lawn Weeds
… management practices that minimize pollinator exposure to harmful pesticides. Many common weeds in managed turfgrass systems attract honey bees (Apis mellifera L.) and other pollinators, increasing their risk of contact with insecticide residues. This dissertation project explored the potential …
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Fire fighters' ability and willingness to participate in a pandemic
… rate for their personnel because of increased exposure risk. Additionally, many variables will negatively influence fire fighter participation rates over and above these attack rates. This thesis analyzes fire fighters' ability and willingness to participate in a pandemic through a …
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Biomarkers of oxidative stress in atrazine-treated honey bees: A laboratory and in-hive study
… threat to honey bees is the unintended exposure to agricultural pesticides. Previous studies report that acute exposures to the common-use herbicide atrazine elicit oxidative stress in non-target insects; however, little information is currently available on the exposure risk of atrazine …
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Advancing Chemical Hazard and Risk Assessments: Insights From Chemical Property Prediction and Multimedia Mass-Balance Modeling
Evaluating the hazards and risks associated with the vast array of chemical substances on the market is essential for protecting human health and environmental integrity. Chemical properties serve as critical determinants of a chemical's potential for hazard, exposure, and risk. By evaluating both …
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Modelling the distribution of mercury in oil and gas processing facilities
… of mercury in oil and gas can increase the exposure risk to field operators and can cause serious corrosion problems. Furthermore,it may cause catalyst poisoning and deactivation; these could lead to long,unplanned shutdowns which are neither operationally nor financially desirable as they …
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Habitat selection, survival, and disease risk of semiaquatic mammals in a highly altered landscape
… must adapt to novel landscapes and mortality risks and variable environmental conditions. I used 6 years of presence-absence data and information from radiomarked individuals to evaluate habitat selection, survival, and disease risk of semiaquatic mammals in east-central, Illinois. Annual …
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Evaluation of Markerless Motion Capture to Assess Physical Exposures During Material Handling Tasks
… warehousing, and distribution. Physical exposure assessment can help identify high-risk tasks, guide the development and evaluation of ergonomic interventions, and contribute to understanding exposure-risk relationships. Physical exposure can be evaluated using self-assessment, …
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The development of welding fumes health risk assessment tool for automotive component related industries
… novel and limited. Currently, the welding fume exposure risk assessments are largely focused on a single welding fume constituent approach because the regulatory standard for compliance only caters for a single constituent. However, in reality, welders are simultaneously exposed to multiple …
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EVALUATING RISK OF LEAD EXPOSURE IN SCAVENGING SPECIES LINKED TO BIG-GAME HUNTING IN SASKATCHEWAN, CANADA
For free-ranging animals, chronic exposure to lead, a toxic heavy metal, can manifest in discrete physiological changes, alter behaviours, and contribute to increased mortality. In Canada, although lead ammunition has been banned for hunting waterfowl, carrion contaminated with lead fragments from …
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The impact of new women infant children (WIC) package on whole grain consumption of participating children in metro-Atlanta, Georgia
… low-income women and children facing nutritional risk. This nutritional risk is classified by a number of factors that include anaemia, underweight, overweight, history of pregnancy complication or poor pregnancy outcomes. Women and children facing nutritional risk are provided with services that …
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Investigating Seasonal and Occupational Trends of Five Organophosphate Pesticides in House Dust in the Lower Yakima Valley, WA
… pesticides that have become widely used. Adult exposure routes and health effects of OPs have been researched in detail. However, data characterizing chronic low–dose childhood exposures to pesticide sources, such as those that may occur in indirect outdoor and indoor environmental pathways, is …
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Preserving Biodiversity for a Climate Change Future: A Resilience Assessment of Three Bay Area Species--Adenostoma fasciculatum (Chamise), Arctostaphylos canescens (Hoary Manzanita), and Arctostaphylos virgata (Marin Manzanita)
… temperature, fire disturbance, temperature exposure risk, water uptake risk, and plant height. Of the resiliency traits examined in literature review, seed mass and species adaptability were determined as the most important for discerning future success by allowing species to expand in range …
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