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 29 for “"animal waste"”.
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Evaluation of Odor-Reducing Commercial Products for Animal Waste
… efficacy in reducing odors from dairy and swine wastes. A sensory panel method was utilized for odor evaluations, in which the panel played an important part. Comparisons between products were made for agitated and unagitated conditions and effect of storage time (three weeks in which experiments …
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Impact of Animal Waste Best Management Practices on the Bacteriological Quality of Surface Water
… monitoring data. BMP implementation included animal waste storage facilities, nutrient management plans, conservation tillage, alternative water sources for livestock, fences, vegetative filter strips, runoff diversions, and others. Statistical analysis of the monthly precipitation data …
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Survival and Overland Transport of Fecal Coliform under Canadian Prairie Conditions
… can have profound impacts on water quality. Animal waste accumulated during winter can be transported to surface water with spring snowmelt. The potential impact on snowmelt runoff quality of winter in-field bale-grazing under the cold climate of Saskatchewan is being evaluated under the …
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A model for predicting bacteria concentrations in runoff from agricultural lands
… contaminate the food and water supplies of both animals and humans. Planning and design of animal waste best management practices (BMPs) thus becomes more important as livestock populations become more concentrated. A computer model is proposed to predict the effects of animal waste BMPs on the …
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Concentrated Animal Feeding Operations: Hazards, Environmental and Health Risks as the Latent Products of Late Modernity
<p>CAFOs raise tens of thousands of animals in confined cages and feedlots, feed them high calorie diets, and ship them to slaughter in record time. These factory farms (as they are sometimes called) devastate neighboring environments with the releases of toxic methane gas and animal waste. …
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A Biogeographic Inventory and Water Quality Analysis of the Upper Drainage Basin of the Meramec River, Missouri
… and fecal streptococcus which live in human and animal waste. A regression analysis was performed to identify correlation between the ecological parameters and the bacteria parameters. This correlation revealed relationships between total hardness and specific conductance. The water quality …
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Identification of fecal pollution sources of karst waters by a combination of Bacteroidales genetic marker, bacterial indicators, and environmental variables
… suggested that contamination by both human and animal waste was the dominant type of pollution among all samples, and only a few samples showed pollution solely by human or animal. Furthermore, spring water tended to be more contaminated than well water, and urban spring systems were detected …
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Solid waste disposal and enforcement with an application to Virginia's scrap tires
… to the effect of enforcement costs on solid waste disposal policy. The analysis demonstrates that the choice of a cost effective policy tool, be it either an enforcement mechanism or targeted subsidy, is an empirical question dependent on the particular attributes of the current waste …
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The role of communication in promoting green energy in the King Cetshwayo District
… The possibility of utilising organic waste to create biogas is an untapped market that would provide many advantages for rural dwellers. From a communications perspective, this study analysed how communications theories could be utilised to stimulate interest in renewable energy. The …
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Development of a Genetic Modification System in <i>Clostridium scatologenes</i> ATCC 25775 for Generation of Mutants
… indole (3-MI) is a malodorant in food and animal waste and <i>Clostridium scatologenes</i> ATCC 25775 is the model organism for the study of 3-MI production. 3-MI is an anaerobic degradation product of L-tryptophan and can cause pulmonary disorders and death in cattle and goats. To …
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New applications of STEPL watershed modeling of CAFO feedlot runoff and implications of surface water impacts
Concentrated Animal Feeding Operation (CAFO) cattle feedlot runoff is hydrologically modeled using the Spreadsheet Tool for Estimating Pollutants Load (STEPL). STEPL estimates the annual nutrient load of nitrogen and phosphorus, among other pollutants, by land use for a watershed. The Dry Creek …
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Simulation, optimization and instrumentation of agricultural biogas plants
… of organic material from energy crops and animal waste to the organic fraction of Municipal Solid Waste (MSW), and to the relative simplicity of AD plant designs. Thus, a whole new biogas market emerged in Europe, which is strongly supported by European and national funding and remuneration …
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Comparison of Ammonia and Particulate Matter Air Sample Concentrations at Task-Locations within Swine Confinement Buildings.
… by the number of exhaust fans and the type of animal waste disposal system.</p><p><em>Conclusions</em>: Occupational health nurses can use study results to implement interventions to minimize worker exposures. These results indicate that understanding the relationship between building design …
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Effectiveness of Windrow Composting Methodology in Killing a Thermo-Tolerant Species of Salmonella During Mortality Composting
… Cal Poly San Luis Obispo, disposal of deceased animals is an immense issue. The cost of transporting and rendering every dead animal is inhibitory to the general function of the agricultural operations and their thin budget. Therefore, we propose that composting mortalities could be an …
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Urea Hydrolysis in Soil Profile Toposequences: Mechanisms Relevant to Nitrogen Transport and Water Quality
… recommendations related to urea fertilizer and animal waste application so that urea-N can be efficiently used by crops and urea movement across the landscape and into surface waters can be minimized.
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Recommendations for at-risk water supplies in Capiz Province, Philippines : using water source and community assessments
… some of these- specifically septic tanks and animal waste- are contributing to poor microbiological water quality. Key-informant interviews and focus-group discussions conducted during the community assessments showed that water management systems are lacking, awareness regarding factors …
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Metabolomic Discrimination of Near Isogenic Low and High Phytate Soybean [GLYCINE MAX (L.) MERR.] Lines
… mixed salts are often excreted by non-ruminant animals such as humans, swine, poultry, and fish. While this causes iron and zinc deficiencies, phytate is also considered a water pollutant due to the excess phosphorus excreted in animal waste. These negative environmental and nutritional effects, …
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Managing ground water contamination from agricultural nitrates
… areas, which produce large quantities of animal waste with substantial nitrogen content. In this study, potential management strategies for reducing nitrate contamination of ground water from agricultural sources were examined using an economic-physical model of a representative dairy farm …
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Watershed nonpoint source management system: a geographic information system approach
… Overland delivery ratio, phosphorus yield, and animal waste models were modified for use in the system. In-stream delivery ratio, and pollutant routing procedures were developed as a part of the overall system functionality. Development and calibration of individual in-stream delivery ratio …
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Geochemical and Microbial Controls of Groundwater Quality in Northwestern Liberia
… but localized infiltration of human and or animal waste/fertilizer(s), was identified as the most important chemical water quality issue. Sulfate was found to be indicative of urban water cycling processes.Although nitrate, arsenic, and lead concentrations exceeded WHO guidelines in several …
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