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 13 of 13 for “"Indicator Organism"”.
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Virus in sewage, polluted water and molluscan shellfish: a critical assessment of coliphage as a possible indicator organism
… begins with a comprehensive review of bacterial indicator systems and. by drawing on published material related to the transmission of enteric viral disease in the marine environment shows that bacterial indicators are inadequate for assessing risks from viruses. Literature in respect of …
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A study of multi-stage sludge digestion systems
… odor generation after centrifugal dewatering and indicator organism reduction in comparison to single-stage thermophilic and/or mesophilic anaerobic digestion systems. Pre-aeration of sludge in a thermophilic temperature was also tested followed by single or multi-stage anaerobic digestion …
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Survival and recovery characteristics of Arcobacter butzleri in groundwater microcosms
… groundwater can exceed that of the traditional indicator organism, Escherichia coli. An inverse relationship between survival and water temperature was observed for both organisms, but the persistence of A. butzleri exceeded that of E. coli at 5, 15, and 25°C. Selective media for the …
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Feasibility of semi-continuous solar disinfection system for developing countries at a household level
… microbial inactivation as measured by the E.coli indicator organism, can be made from locally available materials and is economical. Preliminary feedback from locals show SC-SODIS is socio-culturally acceptable. Limited time did not allow study of the operation and maintenance problems that the …
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Assessment of trace metals pollution along the Central Namibian marine coastline: using Choromytilus Meridionalis (Black Mussel) as indicator organisms.
… pollution using Choromytilus meridionalis as indicator organism. Samples were collected using randomized sampling techniques during winter and summer months of 2012. EPA 3050B and ICP-OES protocols were used to digest and assimilate the samples. Data were analysed using a 4x2x3 factorial model …
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Waste stabilization ponds: Possible contamination of the shore
… (2) and indicates its usefulness as an indicator organism.
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Effectiveness of Windrow Composting Methodology in Killing a Thermo-Tolerant Species of Salmonella During Mortality Composting
… tolerant <em>Salmonella senftenberg </em>as an indicator organism, we performed bench top trials of traditional and carcass compost in the lab. Samples were inoculated with <em>S. senftenberg </em>and kept at 55°C for 15 days in accordance with the California EPA and Test Method for the …
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Assessment of the fate of Cryptosporidium parvum, Giardia lamblia and Ascaris lumbricoides in class A composting and class B lime stabilization biosolids treatment processes
… in reduced numbers.</p><p>The only parasite indicator organism that is required by the Environmental Protection Agency's Part 503 Rule to screen for in biosolids is Ascaris lumbricoides. Protozoans including Cryptosporidium parvum and Giardia lamblia were not considered human pathogens when …
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Factors Associated with Foodborne Pathogens and Fecal Indicator Organisms in Virginia Agricultural Soils
… enterica and L. monocytogenes prevalence, fecal indicator bacteria concentration). Three produce farms in Virginia were selected from different regions (i.e., Blue Ridge Highlands, Piedmont, Coastal Plains). Farms were sampled four times to capture seasonal differences. Five soil samples were …
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Agricultural water quality and biofilm formation in water storage containers and irrigation pipes linked to fresh produce safety
… four weeks into the study. The presence of the indicator organism, E. coli, in the water and in the resultant biofilms was concerning however when considering the potential for crop contamination, no contamination of the lettuce crops was detected despite the high FC levels in the irrigation …
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Using algae as environmental impact indicators in urban freshwater ponds
… this study were to explore the use of algae as indicators of the biotic and abiotic challenges that occur in Sustainable Urban Drainage Systems (SUDS) and to investigate the relationships between algal population dynamics, and stress physiology and water chemistry and quality. An output of this …
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Improving food safety when traditional lab experiments with pathogens won’t work: corn wet milling and preharvest soil safety on pilot and field scale
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Application of Adverse Outcome Pathway framework in assessing nanogold exposure to Daphnia magna
… potential to cause harmful effects on aquatic organisms. However, there is limited information regarding harmful effects of these NMs especially at the molecular level. Daphnia magna is a planktonic crustacean known to be a filter feeder ingesting particles, microorganisms, and many other …