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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 600 for “"dissolved oxygen"”.
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Modeling Dissolved Oxygen in Lake Powell using CE-QUAL-W2
… simulate hydrodynamics, temperature, and total dissolved solids with a reasonable degree of accuracy. An additional parameter, dissolved oxygen, will be added to the simulations and then calibrated with observed data to verify accuracy. Dissolved oxygen distributions in Lake Powell vary …
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Computational fluid dynamics modelling of dissolved oxygen in oxidation ditches.
… about the factors that affect the hydrodynamics, dissolved oxygen (DO) and aeration performance of a wastewater oxidation ditch. The literature is reviewed on the Computational Fluid Dynamics (CFD) modelling of wastewater aeration tanks. This study develops a CFD model of an aerated oxidation …
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Flexible link aerator for dissolved oxygen generation in tiger prawn pond
In the aquaculture industry, the dissolved oxygen is one of the important parameters that need to be monitored seriously. Aerator is normally used to increase the level of dissolved oxygen in water. It functions to circulate or mixes the water top to bottom to ensure that the oxygen content is …
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Modeling temporal and spatial variations in dissolved oxygen in Amite River
A watershed-based modeling framework is developed in this dissertation for simulating temporal and spatial variations in DO in lowland rivers with organic-rich fine-grained sediment. The modeling framework is based on three major contributions/new models, including (1)VART-DO model for improved …
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A Probabilistic Analysis of Dissolved Oxygen-Biochemical Oxygen Demand Relationship in Streams
Made available in DSpace on 2014-12-08T23:57:08Z (GMT). No. of bitstreams: 1 6901374.pdf: 5253573 bytes, checksum: 7904012f6d198abd64683c7d8be5e73e (MD5) Previous issue date: 1968
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The effect of dissolved oxygen on recombinant protein degradation in Escherichia coli
… This work characterizes the effect of dissolved oxygen, an important bioprocess scale-up parameter, on the degradation of recombinant [alpha]1-antitrypsin ([alpha]1AT) during production in E. coli. a 1-antitrypsin degradation increases with dissolved oxygen concentration, with -20% …
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Controlling Dissolved Oxygen, Iron and Manganese in Water-Supply Reservoirs using Hypolimnetic Oxygenation
Hypolimnetic oxygenation systems, such as linear bubble-plume diffusers, are used to improve raw water quality. Linear bubble-plume diffusers were installed in Spring Hollow Reservoir (SHR) and Carvins Cove Reservoir (CCR). Diffusers induce mixing that aids distribution of oxygen throughout the …
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Investigating the Response of the Eastern Oyster (Crassostrea virginica) to Low Dissolved Oxygen Conditions
… oyster <em>(Crassostrea virginica)</em> requires dissolved oxygen (DO) of about 4 mg/L to support proper physiological function. Hypoxia and/or microxia occur when DO decreases to ≤ 2 mg/L. Salinity and temperature changes resulting from large-scale freshwater influx have been identified as key …
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Characterizing water quality, nutrients, and dissolved oxygen dynamics in four Lake Ontario coastal wetlands
… wetlands. Continuous multiparameter sondes (dissolved oxygen, conductivity, turbidity, pH) were deployed above sediments, collecting data every 30 minutes, accompanied by weekly water samples. Key findings include a shift in algal (chlorophyll a) nutrient limitation from nitrogen in 2022 to …
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A system for the analysis of dissolved oxygen, nitrogen and argon in natural waters,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1968.
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The effect of dissolved oxygen by the corrosion of copper by high velocity water
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1954
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The effect of dissolved oxygen on the corrosion of copper by high velocity water
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1958
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The effects of dissolved oxygen concentration on the kinetics and settleability of activated sludge
… was to determine whether or not variations in dissolved oxygen concentration above the critical dissolved oxygen concentration affect the kinetic coefficient and settleability of activated sludge. Synthetic substrate loadings of 0.25, 0.50, 0.75 were applied to bench scale activated sludge …
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Optimization of Biological Nitrogen Removal From Fermented Dairy Manure Using Low Levels of Dissolved Oxygen
… and anoxic NO₃- and NO₂- reduction. The minimum dissolved oxygen (DO) concentration allowing for complete TAN removal was found to be 0.8 mg/L. However, TAN removal rates were less than predicted using default nitrifying kinetic parameters in BioWin®, a biological modeling simulator, which …
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Community Composition of Aquatic Invertebrates along Dissolved Oxygen Gradients in Lake Huron Coastal Wetland Wet Meadows
… I investigated the relative importance of dissolved oxygen along the water depth gradient and its influenced on invertebrate community composition in comparison to the uniform vegetation found in the wet meadow zones of 10 wetlands in Lake Huron of the Laurentian Great Lakes.In 2017, I …
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