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 37 for “"Aerobic respiration"”.
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Molecular Mechanisms Underlying Aerobic Respiration and Heme Regulation in Yeast
… of regulation of cellular bioenergetics and respiration by the SWI/SNF proteins. Measurement of oxygen consumption rate and promoter activity show that Swi3, not Swi2, regulates aerobic gene expression and oxygen consumption. The levels of mitochondrial respiratory chain complex proteins were …
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Combined Effects of Dissolved Oxygen and Temperature On Aerobic Respiration and Respiratory Recovery Responses of the Spioniform Polychaete, <i>Streblospio gynobranchiata</i>, In Relation to Body Size
… of coastal organisms.</p> <p>Mass-specific aerobic respiration (V<sub>O2</sub>) was characterized as a proxy for metabolic cost of <em>Streblospio gynobranchiata</em>, at combined levels of dissolved oxygen and temperature relative to body size. Also, changes in V<sub>O2</sub> during …
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Responses to salinity of color polymorphs in two populations of the sea star, Pisaster achraceus
… sea stars. The three responses analyzed were aerobic respiration, ammonia excretion, and self-righting. The tested variables included two different color morphs (orange and purple) of <em>P. ochraceus</em>, two different locations (open coast and inland straits) in Washington State, and three …
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Flow and reactive transport modeling at the stream-groundwater interface
… dissolved organic carbon and their reaction by aerobic respiration and denitrification are modeled. The results show that stream stage and discharge primarily induce hyporheic exchange flux and solute transport with implications for specific residence times and reactions at both the fully and …
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Ecosystem metabolism in salt marsh tidal creeks and ponds : applying triple oxygen isotopes and other gas tracers to novel environments
… present magnitude and drivers of production and respiration in these submerged environments in order to evaluate the future role of salt marshes as a carbon sink. This thesis describes new methods to apply the triple oxygen isotope tracer of photosynthetic production in a salt marsh. …
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Causes and control of low F/M bulking in long sludge age nutrient removal activated sludge systems
… when sludge is subjected to alternating anoxic-aerobic conditions with nitrite present. (3) A review of the biochemistry of respiration led to the formulation of a biochemical model for facultative organism respiration, an important aspect of which is a series of mechanisms that give rise to …
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Ecosystem metabolism in salt marsh tidal creeks and ponds : applying triple oxygen isotopes and other gas tracers to novel environments
… present magnitude and drivers of production and respiration in these submerged environments in order to evaluate the future role of salt marshes as a carbon sink. This thesis describes new methods to apply the triple oxygen isotope tracer of photosynthetic production in a salt marsh. …
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Effect of Unsteady Surface Water Hydraulics on Mixing-Dependent Hyporheic Denitrification in Riverbed Dunes
… from 0.1 to 1.0 m increased non-mixing dependent aerobic respiration by 270% and mixing-dependent denitrification by 78% in homogeneous sediment. Heterogeneous hydraulic conductivity fields yielded similar results, with increases in consumption due to variation in correlation length and variance …
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Understanding the physiological role of the small RNA RydC
… in amino acid transport, carbon metabolism, and aerobic respiration. We demonstrate that rydC transcription varies depending on the carbon source cells are utilizing.
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Respiratory quotient during metamorphosis of Hyla regilla tadpoles
… metamorphosis could be found.</p><p>In normal, aerobic respiration, the relative amounts of oxygen consumed and carbon dioxide released changed characteristically with the chemical nature of the metabolized substrate. An RQ of 1.0, 0.8, and 0.7 indicate metabolism of pure carbohydrate, lipid, …
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Spatial and temporal variability of carbon stocks within the River Colne Estuary
… species distribution, above-ground biomass and aerobic respiration on TOC content was investigated. The spatial and temporal variation of sediment TOC content was investigated by monthly sampling from two habitats and three zones at each study site. There was a significant spatial variation in …
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Disruption of mitochondrial redox homeostasis as a cellular signal.
… oxygen species (ROS), which are by-products of aerobic respiration and recently recognised as important signalling molecules that control various cellular functions. To avoid the potential damaging effects of ROS, mitochondria contain protein antioxidant systems to help maintain thiol …
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Examining the relationship between mitochondrial dysfunction and Parkinson's disease pathology: a review on potential risk factors and treatments for parkinsonism
… unknown. Neurons are heavily dependent on aerobic respiration for ATP due to their high energy demands. In neurons, mitochondria are transported throughout axons and dendrites for facilitating subcellular functions, and are critically important for membrane excitability and …
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The remineralization of marine organic matter by diverse biological and abiotic processes
While aerobic respiration is typically invoked as the dominant mass-balance sink for organic matter in the upper ocean, many other biological and abiotic processes can degrade particulate and dissolved substrates on globally significant scales. The relative strengths of these other remineralization …
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A STUDY ON THE BIOCHEMICAL AND CELLULAR EFFECTS OF ENVIORMENTAL TOBACCO SMOKE ON ADULT AND DEVELOPING RAT BRAIN BIOCHEMISTRY
… in elements associated with all aspects of aerobic respiration. These results were substantiated by orthogonal molecular measures, along with evidence for increase mitochondrial biogenesis/fission. These findings suggest an increase mitochondrial density driven by a demand for ATP. Further …
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The remineralization of marine organic matter by diverse biological and abiotic processes
While aerobic respiration is typically invoked as the dominant mass-balance sink for organic matter in the upper ocean, many other biological and abiotic processes can degrade particulate and dissolved substrates on globally significant scales. The relative strengths of these other remineralization …
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Degradation of gasoline oxygenates in the subsurface
… were added to induce the desired metabolism (aerobic respiration, denitrification, sulfate reduction, or methanogenesis). In each metabolic process, the influence of several subsurface environmental factors on biodegradation was investigated. The data show that biodegradation potential of …
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Estuarine sediment nutrient exchange: the importance of physical transport mechanisms and benthic micro-communities
… (DIP) fluxes were strongly dependent on benthic aerobic respiration rates for silt-clay sediments as compared to sandy substrates. In situ studies indicated a significant decrease in ammonium and DIP fluxes as a result of nutrient uptake by benthic microalgal communities. The importance of …
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MAJOR AND MINOR ION GEOCHEMISTRY OF GROUNDWATERS FROM BERMUDA
… suggest that carbon dioxide generation from aerobic respiration and nitrate reduction are probably the dominant reactions influencing the carbonate geochemistry, while iron, manganese and sulfate reduction, although clearly detectible, play only a minor role. The geochemistry of phosphate and …
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Seagrass-Mediated Carbonate Dissolution and Early Diagenesis in Bahamas Bank Sediments
… 1:1 mixing of DIC from carbonate dissolution and aerobic respiration. In contrast, pore water DIC in dense seagrass sediments was more enriched in <sup>13</sup>C than predicted by the simple mixing model. A carbonate dissolution/reprecipitation model was proposed to explain these observations. In …
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