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 11 of 11 for “"Oxidation and reduction reactions"”.
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Synthesis and properties of some 2,5-dihydrothiophene 1,1-dioxides
… including ionic additions, radical initiated reactions, Diels-Alder reactions, ietalation, condensation, and oxidation and reduction reactions. 2. For the first time the introduction of one halogen atom into the unsaturated five-membered cyclic sulfone without the isomerization of the double …
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Photoactivity of titanium dioxide films with controlled orientation
… could remove issues with disinfection byproducts and lower the operating costs. However, the activity of photocatalysts is too low to be used commercially. The most common photocatalyst is titanium dioxide, and while the activity of titanium dioxide is high when compared to other photocatalysts, …
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Carbon nitride for solar H2 production coupled to organic chemical transformations
… solar-light for clean fuel H2 production and is emerging as a potential solution for renewable energy generation. Photocatalytic systems that combine a light harvester and catalysts in one-pot reactor are promising strategies towards this direction. Yet, most of the reported systems …
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Detection, analysis, and photocatalytic destruction of the freshwater taint compound geosmin.
A significant issue affecting the aquaculture and water industries is the presence of off-flavour compounds in water, which cause problems by imparting an undesirable earthy/musty flavour and smell to water and fish. Two predominant off-flavour compounds are geosmin (GSM) and 2-methylisoborneol …
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Design and Application of Nanostructured Flavin Photocatalysts
… that are responsible for metabolic, antioxidant and photoreception processes across animal, plant and bacteria kingdoms. Their broad redox and photochemistry has seen the field of flavin-based catalysis emerge as a powerful addition to sustainable catalysis thanks to being cheap, non-toxic and …
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Manganese dioxide reduction kinetics by Geobacter sulfurreducens and associated biofilm morphology in a flow-through reactor
… aquatic environments such as streams, lakes, and groundwater, microorganisms play an important role in the cycling of metals. Dissimilatory metal reducing bacteria (DMRBs) are a specific type of bacteria that convert metals to lower redox states through oxidation and reduction reactions. They …
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In-situ electron imaging of oxidation and reduction of rutile (TiO2) nanocrystals and interaction with palladium
… excellent catalytic properties for chemical reactions that impact several industries, for example, Pd/CeO2 is used in the catalytic converters of automobiles for environmental remediation, Rh/ZrO2 is used for fuel refinement, and Pt/TiO2 is an excellent photocatalyst. Since chemical reactions …
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Cytotoxicity of Galvanically Coupled Magnesium and Titanium Particles for Therapeutic Effect
… Mg particles due to increased corrosion rate. Mg and Mg-Ti particles were characterized using scanning electron microscopy (SEM), which showed that Mg and Mg-Ti particles have the average diameter of 50 µm, which makes them slightly larger than an average mammalian cell. Therefore, the …
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Metabolic engineering of Saccharomyces cerevisiae for efficient ethanol production from pentose sugars
… sugar uptake ability, the low expression level and activity of heterologous proteins, the redox imbalance that results from different cofactor preference in oxidation and reduction reactions, and a suboptimal metabolic flux through different catalytic steps. A lot of research has been carried …
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Biotransformation studies on tobacco cembranoids using plant cell cultures
… the plant cell culture lines coded as TRP4a and T-43-T which are derived from Tripterygium wilfordii, an important Chinese herbal plant, and Nicotiana sylvestris, respectively. The studies are divided into three parts: 1) Biotransformation of the diols 1 and 2 using the TRP4a cell line. 2) …
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The marine geochemistry of the rare earth elements
… by cation exchange for removal of co-extracted U and remaining traces of major ions. Finally traces of U are removed by anion exchange before irradiation for 8 hours at a flux of 5 x 1013 neutrons.cm-2.sec-l. After post-irradiation separation of 24 Na, the gamma spectra are recorded over four …