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 65 for “"environmental fate"”.
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Environmental fate and persistence of cyclospora cayetanensis
Made available in DSpace on 2019-02-08T18:44:46Z (GMT). No. of bitstreams: 3 ONSTAD-THESIS-2018.pdf: 1970738 bytes, checksum: f1ef53075cde9d30780afc7b5b10effb (MD5) Onstad_TSM_MS.docx: 6390873 bytes, checksum: 5e1ee694d8ea7fb111613ecb4625e8f4 (MD5) LICENSE.txt: 4208 bytes, checksum: …
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MICROBIAL CONTROLS ON THE ENVIRONMENTAL FATE OF CARBON NANOMATERIALS
… of this dissertation is to examine the role of environmental microorganisms in degrading CNM and to elucidate which CNM properties and environmental processes represent important controls on this degradation. To accomplish this, a series of incubation studies were conducted in which pure fungal …
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Naphthenic Acids: Synthesis, Characterisation and Factors Influendng Environmental Fate
… deposition as salts in pipelines. NAs also cause environmental problems because they are known toxicants. For example, the processing of the vast tar sands deposits of Alberta, Canada results in tailings pond waters containing very high concentrations of NAs. The ponds are estimated to exceed a …
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An evaluation of the environmental fate of reactive dyes
… yet surprisingly little is known about their fate in the environment. The potential modes of transformation and removal of reactive dyes in treatment and in the environment are principally through anaerobic and aerobic biodegradation and photodegradation. The research herein describes the use …
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The Environmental Fate and transport of Trenbolone Acetate Metabolites in Agro-Ecosystems
… have been reasonably well characterized, their fate and transport in the environment is poorly characterized. Therefore, lab, plot, and field scale experiments were used to quantify the mass of TBA metabolites that could transport from agro-ecosystems to receiving waters. Observed leaching of …
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Physico-chemical Characteristics and Environmental Fate of a Hydrolytically Degradable Cationic Flocculant
… the characterization of poly(PLA4ChMA) and its environmental fate must be investigated. The objectives of this research were to characterize the degradation of poly(PLA4ChMA), and its interactions with mature fine tailings (MFT) and municipal wastewater, especially with respect to human …
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Environmental fate and effects of atrazine, metolachlor, carbaryl and chlorothalonil in lotic ecosystems
… These data indicate that pesticide fate and abundance are influenced by compound characteristics and stream physicochemical properties and effects of pesticides on aquatic organisms are influenced by species characteristics.
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Environmental fate and effects of chromium(III) and (IV) investigated using electroanalytical chemistry.
A system which enabled the simple exchange of reagents , during the electrochemical determination of chromium(III) or (VI) was developed. This media exchange system was used to investigate the effect of pH on the complexation and pre-concentration of chromium separately from the production of the …
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Model Aquatic Ecosystem Studies of the Environmental Fate and Biodegradability of Industrial Compounds
Made available in DSpace on 2014-12-12T01:27:44Z (GMT). No. of bitstreams: 1 7414576.pdf: 5098759 bytes, checksum: 90095620528c95607d846a398795952b (MD5) Previous issue date: 1974
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Environmental Fate of Animal Manure-associated Antibiotics and Seed-coated Pesticide in Soils
There is growing concern over the environmental and human health impacts of chemical contaminants in agricultural systems. The environmental persistence of veterinary antibiotics applied to agricultural fields during manure fertilization could lead to increased antibiotic resistance. New …
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Impact of Manure Management Practices on the Environmental Fate of Antibiotics in Manure-Applied Fields
Antibiotics and antibiotic resistance genes from animal manure applied to soil as fertilizer are now among the most concerned contaminants in soil. The widespread use of antibiotics in livestock might amplify the risk of developing antibiotic resistance, causing once treatable diseases to turn …
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Interaction of emerging contaminants at the colloidal and planar interfaces : influence on environmental fate and transport
… the role surface chemistry plays in the fate and transport of pollutants. The overarching aim of this thesis has been to investigate adsorption of selected emerging pollutants to colloids and elucidate how these surface interactions influence their fate and mobility in aquatic systems. …
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A Study of Neonicotinoid Seed Treatments in Bt Maize: Insect Resistance Management, Efficacy, and Environmental Fate
… To delay resistance to Bt traits, in 2010 the US Environmental Protection Agency (EPA) approved a "refuge-in-a-bag" (RIB) insect resistance management (IRM) strategy, where 5% of seeds do not express Bt toxins (i.e., "refuge" maize). The RIB strategy is intended to preserve Bt trait effectiveness …
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Characterization and Mobility of Brake Wear Dust from Traffic Non-Exhaust Emissions in Porous Media: Transport and Environmental Fate
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Role of Sulfhydryl-Containing Low Molecular Weight Ligands for the Environmental Fate of Zinc Sulfide and Metallic Silver Nanoparticles
… nanomaterials requires an understanding of the environmental factors that control the reactivity and bioavailability of natural and manufactured nanomaterials. Dissolved organic matter (DOM) acts as a moderator of reactivity and bioavailability for dissolved and particulate moieties in natural …
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Environmental Fate of Ivermectin and its biological metabolites in Soils: Potential implications for the Environmental Impact of Ivermectin Mass Drug Administration for Malaria Control
… the contamination impacts, these drugs' environmental fate and effects could be regarded before massive IVM applications. Many researchers have tried to address this subject in temperate regions compared to the tropics, where IVM is urgently needed. Regional discrepancies such as soil …
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Molecular Modeling Of Energetic Materials And Chemical Warfare Agents
… Effective decontamination requires knowledge of environmental fate of contaminants and the appropriate remediation methodologies. While the fate of chemical warfare agents are well studied, the impact of certain energetic materials in the environment is relatively unknown. So the current focus is …
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The Characterisation of Oilfield Chemicals by Electrospray Ionization Multi-Stage Mass Spectrometry (ESI-MSᵑ)
… platforms in so-called Produced Water (PW). The environmental fate of these chemicals is largely unknown since few methods exist for their detection. In the present study, the use of multistage electrospray ionisation ion trap mass spectrometry (ES1-MSᶯ) was investigated for the detection, …
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Integration of substance flow analysis, transport and fate of materials in the environment, and environmental risk assessment for provision of information for regional environmental management: cadmium as a case study in Australia
… give sufficiently rapid feedback for effective environmental management. With regard to the complexity and concern related to environment-health chain effects, there is currently no environmental tool or approach that can provide comprehensive information and indicators covering all major …
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The Fate of Dcpa and Diazinon in Turf Using Model Ecosystems
The environmental fate of two pesticides, DCPA (Dacthal) and Diazinon, was examined using model ecosystems. Experiments were designed to determine the effectiveness of the model ecosystem in pesticide research and to measure the effect of thatch and irrigation frequency on the transformation and …
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