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 14 of 14 for “"inhalation exposure"”.
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Inhalation exposure system for diesel exhaust particulates
… research were twofold. First, a Hazelton 2000 Inhalation Chamber was modified to minimize the amount of diesel exhaust particulate (DEP) needed for animal inhalation exposures. Second, instrumentation was evaluated for aerosolizing DEP, monitoring the mass concentration and size distribution, …
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T2 Mycotoxicosis in Swine Following Topical Application, Intravascular Administration and Inhalation Exposure
… (15 mg/kg), intravascular (0.6 to 5.4 mg/kg) or inhalation (8 or 9 mg/kg; 20 to 30 percent retention) exposure.
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Aerosolization of Ebola Virus Surrogates in Wastewater Systems
… the virus to be aerosolized and pose a risk of inhalation exposure has not been evaluated. We considered this risk for three wastewater systems: toilets, a lab-scale model of an aeration basin, and a lab-scale model of converging sewer pipes. We measured the aerosol size distribution generated …
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Chemical Contaminants in Drinking Water: An Integrated Exposure Analysis
… of this research is to develop an integrated exposure model, which performs uncertainty analysis of exposure to the entire range of chemical contaminants in drinking water via inhalation, ingestion and dermal sorption. The study is focused on a residential environment. The various water …
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Aerosolization of Drinking Water Metals to Indoor Air and Assessment of Human Taste and Visual Thresholds for Manganese
Exposure to excess manganese via drinking water raises concerns due to potential for adverse neurological impacts, particularly in children. Manganese is ubiquitous in US groundwaters above the SMCL = 0.05 mg/L. Manganese is an essential nutrient, but exposures to elevated manganese have neurotoxic …
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EXPLORING RISK ASSESSMENT METHODS TO EXAMINE NEUROLOGICAL RISK DUE TO AIR TOXIC EXPOSURE IN MINNESOTA
… sociodemographic characteristics and air toxic exposure in the United States. However, a few studies have examined the neurological risk from exposure to air toxics. The purpose of the study was to determine the correlation between sociodemographic variables and neurological risk due to exposure …
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Novel Approaches to Exposure Assessment and Dose Response to Contaminants in Drinking Water and Food
… risk assessment and applying novel methods for exposure assessments and dose responses to contaminants in drinking water and foods. Factors that greatly impact contaminant exposures and human dose response include: population susceptibility (i.e., healthy adults or children), different routes of …
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Assessing Human Exposure to Emissions from Ultrasonic Humidifiers
… into room air, but they simultaneously add exposure risks of aerosolized metals from drinking water used as fill water. The inhalation exposure from emitted metals can be overlooked, and thus, co-exposure of inhalation and ingestion and co-exposure to multiple inorganic metals is …
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Application of Polychlorinated Biphenyl Signatures for Environmental Fingerprinting
… the source of PCB contamination and age date exposure in workers at a transformer dismantling plant. A total of 84 different PCB congeners were identified in the sera of 30 workers with concentrations of the 7 indicator PCBs ranging from 1.2 - 39 μg g-1 lipid. Analysis of PCB signatures was …
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Environmental mineralogy of gold recovery from refractory gold-arsenic-bearing Bakyrchik concentrates
… Assessment of As bioaccessibility through inhalation demonstrates its strong dependence on the mineralogy rather than on total As content of the solid samples. Calculated cancer and non-cancer risks of inhalation exposure imply that all samples are highly hazardous for human health. With …
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Airborne Dissemination of Antibiotic Resistance Genes Near Farms and Effectiveness of Ionization Against Airborne Bacteria in a Classroom
… including blaCTX-M1, and 106 gc s-1 for intI1. Inhalation exposure to blaCTX-M1 was comparable to ingestion exposure from soil at the dairy farm. In chapter 4, the effectiveness of an in-duct, bipolar ionization system for reducing airborne pathogens was evaluated in a real-world setting: an …
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Síntomas respiratorios por uso de plaguicidas y factores asociados en cultivadores de papa Ventaquemada, Boyacá
El cultivo de papa en Colombia representa una de las principales actividades agrícolas. Los agricultores se exponen a factores como el uso de plaguicidas que puede llevar a la aparición de síntomas respiratorios debido a la inhalación de gases. Objetivo. Determinar los factores que explican la …
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The Influence of Outdoor Air Quality on Vertical and Transverse Dental Dimensions
<p>Introduction: Ambient air pollution exposure is significantly associated with increased posterior crossbite tendency. Purpose: The objectives of this study were to assess whether there was an association between exposure to ambient air pollution and skeletal and dental measurements of vertical …
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Exposición acumulada de polvo respirable como predictor de enfermedad respiratoria. Asociación entre la dosis acumulada de polvo respirable y las alteraciones respiratorias no malignas en los trabajadores de una empresa de minería de carbón a cielo abierto
En la minería de carbón se presenta exposición prolongada a polvo de carbón y a polvo de sílice en diferentes porcentajes, encontrándose una asociación con las alteraciones obstructivas, bronquitis crónica, Neumoconiosis de los trabajadores de carbón y Silicosis. Se han establecido varias formas de …