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 40 for “"air sampling"”.
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Validation of Passive Air Sampling Monitors Onboard United States Navy Submarines
<p>An operating submarine creates a unique air quality mixture of compounds that result from a combination of human metabolism, construction materials, materials brought onboard and compounds created through the interaction of ship systems. A comprehensive study of submarine atmospheres is ongoing …
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Mathematical solutions to problems in radiological protection involving air sampling and biokinetic modelling
… of radionuclides are estimated with the personal air sampler (PAS) and by biological monitoring techniques: in the case of plutonium, there are problems with both methods. The statistical variation in activity collected when sampling radioactive aerosols with low number concentrations was …
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An air sampling system to estimate concentrations of argon-41 in the V.P.I. physics building during reactor operation
… in a low background radiation area to analyze air samples. Air samples were taken from different locations in the physics building during reactor operation to determine the concentrations of A⁴¹ released to the surroundings of the building during reactor operation. The samples were collected in …
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Transmission of tuberculosis in high school students in Worcester, South Africa
… no published study has conducted measurement of air quality and air sampling for Mycobacterium tuberculosis DNA in school classrooms, a novel approach that may support targeted TB disease case–finding strategies which may be more efficient than symptom–based TB screening in the congregate school …
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Source receptor modeling of airborne particles collected over the Great Lakes
High-volume air samplers were used to collect aerosol samples on Whatman 41 air filters at the Canadian air sampling stations Burnt Island, Egbert and Point Petre. Once collected, the samples were analyzed for trace elements by neutron activation analysis. Air concentrations of over thirty trace …
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The study of volatile organic compounds in urban and indoor air
… play in it. Also investigated are the methods of sampling and analysing the volatile organic compounds in the air, paying particular attention to the role of solid phase sampling. Chapter 1 also examines the role of volatile organic compounds on air quality. Chapter 2 describes the experimental …
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Design, optimization and flight testing of a micro air vehicle
Micro Air Vehicles (MAVs) are a new type of aircraft maturing every year. The first mission-capable MAVs are already available on the market. Similarly to larger UAVs, MAVs may be used in a variety of applications, both military and civilian, such as situational awareness, reconnaissance, data …
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The animal health components of a biosurveillance system
… biosurveillance; 2) a pilot study on the use of air-sampling as a novel method for animal health surveillance; 3) a scoping review on behavioral barriers, enablers, and interventions for animal owners and producers reporting animal diseases to veterinary authorities; and 4) theoretical …
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Characterizing the Indoor Air Environment In the Homes of First Nation Children and Youth Using Remote Community-Based Research Methods: Household Conditions, Air Quality, and Preliminary Health Outcomes
Indoor air quality is a critical determinant of physical and mental health. Despite evidence linking poor indoor air quality to adverse health outcomes, this issue is understudied in the context of First Nations children and youth health and wellbeing. The objectives of this study were to (1) …
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Mercury emissions from crematoria
… emissions from crematoria by means of soil and air sampling programmes. The extent of exposure to the mercury by the crematoria workers was then determined by a hair-sampling programme. The soil monitoring and analysis programme involved five crematoria and measurements were made both by using a …
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Indoor/Ambient Residential Air Toxics Results in Rural Western Montana
… organic compounds (including 14 hazardous air pollutants) were measured in the homes of nearly 80 western Montana (Missoula) high school students as part of the ‘Air Toxics Under the Big Sky’ program during the 2004/2005 and 2005/2006 school years. Target analytes were measured using low …
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Indoor/Ambient Residential Air Toxics Results in Rural Western Montana
… organic compounds (including 14 hazardous air pollutants) were measured in the homes of nearly 80 western Montana (Missoula) high school students as part of the ‘Air Toxics Under the Big Sky’ program during the 2004/2005 and 2005/2006 school years. Target analytes were measured using low …
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Evaluating sources of volatile organic compounds in Colorado workplaces via positive matrix factorization
… for a stronger understanding and management of air quality. Exposure to VOCs, emitted from various sources like building materials, office equipment, and consumer products, have been linked to both acute and chronic health outcomes, including respiratory issues and carcinogenic effects. While …
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ON THE USE OF ASBESTOS IN CENTRAL ASIAN COUNTRIES: FINDINGS IN POSTMORTEM LUNG SAMPLES, CHARACTERIZATION OF ASBESTOS-CONTAINING MATERIALS, ENVIRONMENTAL AND OCCUPATIONAL EXPOSURE. CASE STUDIES IN KYRGYZSTAN.
… exposure present in Urban areas through air sampling; and measuring the occupational exposure in one of these industries through the same method. This thesis also presents an analysis of lung samples taken from the general population of Kyrgyzstan in non-occupational settings, further …
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Airborne Campylobacter in a Poultry Processing Plant
… on finished products. Monitoring levels of airborne Campylobacter may be useful for identifying the presence or relative concentration of the pathogen in a processing plant environment. In this study, air sampling was used to detect and quantify Campylobacter in a commercial chicken …
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Air quality at an electric-arc steel manufacturing plant
An extended air sampling program was conducted at an electric-arc secondary steel manufacturing facility using the HI-VOLUME Sampler reference method for suspended particulates. A wind recording device was installed at the facility to provide a continuous record of wind data for correlation with …
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Health Assessment of Artisanal Metal Work: Injury Patterns, Aerosol Exposures, and Biomonitoring
… health research. Despite sustained exposure to airborne particulates and acute injury hazards, these workers operate outside traditional regulatory frameworks and surveillance systems, such as those governed by OSHA, due to their non-standard employment status, with a notable lack of workers’ …
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Application of Fourier-transformed-infrared spectroscopy to quantitate amorphous silica in personal air samples in sugarcane cutters
… FTIR to non-destructively analyze and quantitate air sampling filters. Additionally, the results will be compared to the current limit of detection values for the FTIR methods employed by NIOSH for their silica analysis tool, further contributing to the literature.
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Development of limiting dilution viability pcr method to assess the effectiveness of selected biocides to treat indoor fungi growth
… of indoor waterborne fungi previously. Indoor air sampling revealed that higher educational building of computer studies (Building A) and of civil engineering studies (Building B) were contaminated by 509 CFU/m3 and 805.7 CFU/m3 of indoor airborne fungi, respectively. Two indoor fungi, …
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