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 22 for “"environmental sampling"”.
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Quantitative Recovery of Listeria monocytogenes and Salmonella enterica from Environmental Sampling Media
Environmental sampling is a pathogen monitoring technique that has become important in the food industry. Many food processing companies have adopted environmental sampling as a way to verify good manufacturing practices and sanitation plans in their facilities. Environmental sampling is helpful …
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A Self-Sustaining, Boundary-Layer-Adapted System for Terrain Exploration and Environmental Sampling
… of a system for remote terrain exploration and environmental sampling on worlds with dense atmospheres. The motivation for the system is to provide a platform for long-term scientific studies of these celestial bodies. The proposed system consists of three main components: a buoyancy-driven …
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Decision Making Tools for Optimizing Environmental Sampling Plans for Listeria in Poultry Processing Plants
… monocytogenes illness outbreaks. Developing environmental monitoring programs (EMPs) that are based on product and/or process risk level analysis is a useful approach to reduce contamination in poultry processing plants and enhance food safety. Sampling criteria that is based on product risk …
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Campylobacter jejuni and Salmonella spp. Detection in Chicken Grow Out Houses by Environmental Sampling Methods
… contents and dissection, research involving environmental sampling has been limited. New and/or improved environmental sampling methods may provide an easy, convenient, and less time-consuming way to collect samples. Coupling these sampling methods with PCR may provide a relatively simple, …
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Optimizing sample plans to improve microbiological safety in a food processing plant
… their introduction and control their spread. An environmental sampling and monitoring program is an important tool that food manufacturers use to determine the effectiveness of their sanitation practices and pathogen control efforts. Guidance for initiating an environmental sampling plan and …
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Association of Campylobacter spp. Levels between Chicken Grow-Out Environmental Samples and Processed Carcasses
… of pre- or post harvest contamination. Environmental sampling in a poultry grow-out house, combined with carcass rinse sampling from the same flock may provide a relative assessment of Campylobacter contamination and transmission. Air samples, fecal/litter samples, and feed pan/drink …
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Risk factors for work-related asthma in health workers with exposure to diverse cleaning agents in two African health care settings
… included systematic workplace observations, environmental sampling for aldehydes (orthophthalaldehyde-OPA, glutaraldehyde and formaldehyde) and urine biomonitoring for chlorhexidine. Environmental sampling for aldehydes was conducted more extensively in the South African hospital (SAH). A …
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South Chattanooga and Chattanooga Creek floodplain: A case study
… study approach, the area was examined as both an environmental justice community and home to an active Superfund site. Through legal analysis, historical research, environmental sampling, and government agency assessment, patterns emerged. The patterns provided a means for comparison with other …
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Photogrammetry, cloud storage, virtual reality, and augmented reality to guide radiation measurement planning and visualization process
… them and helps a user determine if environmental factors are introducing false positives. A virtual model has been shown to visualize collected measurements in near real-time, but not in real-time. The ability for a user to quickly address alarm measurements is hampered by this lack …
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Effects of Outdoor Access and Season on Mastitis Pathogen Distribution and Milk Quality Parameters in Dairy Herds in Western Canada
… balance productivity, welfare expectations, and environmental challenges, concerns persist regarding whether outdoor access increases the risk of clinical mastitis, particularly from environmental pathogens. However, little research has compared mastitis pathogen distribution across different …
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Biogenic Amine Analysis of Fresh and Stored Bluefish (Pomatomus Saltatrix) and Microbiological Survey of Histamine-Forming Bacte
… in fish-processing facilities was studied. Environmental sampling techniques were conducted in the Hampton Roads area of Virginia in fish-processing facilities that regularly handle scombroid fish or other fish which are known to accumulate histamine levels greater than 50 ppm. Surfaces that …
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Developing aggregative soil sampling methods to improve preharvest produce safety
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Human-robot interaction for telemanipulation by small unmanned aerial systems
… (UAV) platforms transformed the civil and environmental engineering industries through applications such as surveying, remote infrastructure inspection, and construction monitoring, which normally use UAVs for visual inspection only. Recent developments, however, suggest that performing …
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Marine ecosystem classification and conservation targets within the Agulhas ecoregion, South Africa
… of community biodiversity patterns and their environmental drivers. This is one of the first studies to (i) visually investigate marine epifaunal community patterns and their environmental drivers along the Agulhas ecoregion outer shelf, shelf edge and upper slope to support marine ecosystem …
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Determination of a novel mine tracer gas and development of a methodology for sampling and analysis of multiple mine tracer gases for characterization of ventilation systems
… largely dependent on the accuracy of release and sampling methods. Therefore, an analysis of sampling methods is crucial for rapid response and dependable results during emergencies. This research project involves evaluating and comparing four well-accepted sampling techniques currently utilized …
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Evaluation of approaches for the derivation of defensible sediment quality guidelines for application at Saskatchewan uranium operations
… community composition data for a specific sampling site. In this study, sediment chemistry (total metals and radionuclides) and benthic community data from northern Saskatchewan uranium operations were compiled and examined. Results indicated that the CNSC-derived SQGs had limited …
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Clostridium difficile: expression of virulence factors, resistance to disinfectants and interactions with human cells
… in ribotype 001, a common outbreak strain. Environmental sampling of the laboratory and surrounding areas showed considerable dissemination of C. difficile, highlighting the need for effective decontamination in conjunction with basic hygiene methods like hand-washing. The third study …
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Metal exposure in non-occupationally exposed pregnant women of Western Australia and contribution of environmental sources
… to their exposure. Studies have shown that environmental media are potential sources of metals exposure for humans, and exposure in the general population can occur through inhalation of contaminated air, ingestion of contaminated drinking water and food, or by dermal contact. This study is …
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Work-related asthma among workers in the Mozambique wood processing industry
… studies have comprehensively studied host and environmental risk factors for work-related asthma phenotypes associated with wood dust. The aim of this study was to determine the prevalence and risk factors for work-related asthma among workers in the Mozambiquan wood processing industry. …
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Post-natal environmental effects on behaviour in the zebra finch (Taeniopygia guttata)
… adult, there is currently great interest in how environmental variability may shape the behavioural phenotype, and whether such shaping has adaptive benefits. It is clear for example that the developmental environment will have immediate effects on an animal in terms of its survival and …
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