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.
Results
Showing 1 to 10 of 10 for “"Mixture effects"”.
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The functional role of understorey herbs for litter decomposition in temperate forests
… we still know relatively little about the effects of the understorey layer on the decomposition of tree litter, which forms the biggest natural source for C and nutrients in the topsoil of most forests. This thesis aimed to unravel the relative importance of the functional role of …
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Investigating the effects of organic pollutants on amphibian populations in the UK
… biological samples and may be used to signature effects induced by chemicals in cells and tissues. Here, attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy in conjunction with multivariate analysis was implemented in order to distinguish between embryos, whole tadpoles …
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The role of cover crops in agroecosystem functioning
… crop (CC) species function uniquely in their effects on ecosystem services when grown in monoculture or mixtures. This research integrated field experiments and a literature synthesis to evaluate the role of cover crops in improving nitrogen (N) management and simultaneously providing multiple …
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Examining swim bladder inflation failure as a toxicological endpoint in Japanese medaka (Oryzias latipes)
… being lethal itself, can have serious long-term effects on fish populations. Many environmental contaminants can inhibit swim bladder inflation of larval fish. Understanding how swim bladder inflation failure due to pollutant exposure occurs and developing biomarkers for this effect is important. …
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Towards an understanding of mass transfer and hydrodynamics in packed bed reactors using Nuclear Magnetic Resonance
… correlations exist for pure components and mixtures, previous studies have failed to measure the mass transfer coefficient in situ without extensive pre-calibration. In this thesis, the T2-T2 method is used to measure in situ mass transfer coefficients for single components and mixtures …
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Experimental Study on Foamy Oil Flow by Using Different heavy Oil-Solvent Systems
… physical models, and the production performance effects of pressure depletion rates on foamy oil flow have been studied, it remains difficult to understand the process clearly. Meanwhile, many oil samples used in previous studies were on heavy oil-methane systems or heavy oil-CO2 systems, rarely …
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Copper and Zinc Speciation in the Tamar Estuary
… previous studies demonstrating the ameliorative effects of dissolved organic carbon (DOC) on metal toxicity, the effectiveness of ligands from varying sources and of potentially variable composition in controlling speciation has not been studied in detail in estuarine waters. In addition, the …
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Molecular docking and geographical information systems as tools to assess the potential impact of veterinary medicines on non-target organisms and the environment
… that may have chronic or sometimes lethal effects when they come into contact with non-target organisms. VMs enter the environment in mixtures, potentially having additive effects. Traditional ecotoxicology tests are used to determine the lethal and sometimes reproductive effects on …