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 82 for “"Carbon flux"”.
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Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study
… and to estimate the fate of phytoplankton carbon in continental shelf waters of the west Antarctic Peninsula (WAP) and Ross Sea. Simulation of the underwater light field required derivation of new coefficient sets for power function-type cloud cover correction algorithms, which were found …
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Three enzymes - One substrate Regulation of carbon flux through a "non-canonical" metabolic branchpoint
… be used for biomass production because the two carbon atoms which enter the TCA cycle are lost as CO2 . However, many bacteria are able to bypass these oxidative decarboxylation steps, allowing them to conserve carbon for gluconeogenesis. They perform this by using the “glyoxylate shunt”. Here, …
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Water and carbon flux responses to soil moisture pulses in the Western United States
… study, the relationships among plant water and carbon flux responses to soil moisture resource pulses in semi-arid lands of the Western United States were diagnosed. Measurements from twelve AmeriFlux tower (in situ) and SMAP (satellite) sites across the region were used to estimate …
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Physical Oceanographic Controls on Biological Production and Ocean-Atmosphere Carbon Flux in the North Pacific
… waters are a notably strong sink for atmospheric carbon dioxide (CO2) on a mean annual basis, while seasonally they vary from a sink in the winter to a neutral to weak source in the summer. As the partial pressure of carbon dioxide (pCO2) in the surface mixed layer exerts primary control on the …
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Screening the effects of indoles on the proliferation of yeast via changes in lipid carbon flux
… on culture growth in association with the lipid carbon flux. These indole compounds were selected to assess the significance of the 2-phenyl and the hydroxylated 2-phenyl substituents on the activity of indole. Interestingly, each of the indole compounds exhibited different growth inhibition …
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Modeling the combined environmental effects on net land carbon flux in the present and future scenarios
… contributing to the sources for the atmospheric carbon dioxide (CO2) in the global carbon cycle. The terrestrial ecosystem globally absorbs about 30% of the anthropogenic CO2 emissions as a sink. Land therefore consists of two counteracting CO2 fluxes, a source from LULCC and a sink from the …
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Organic-Input Impacts on Soil Carbon Flux, Storage, and Budget in Conservation Agricultural Soils, Central Washington, USA
… an urgent need for strategies for sequestering carbon (C). Soil C, which has been depleted by land use change and agricultural practices, is a prime target for C storage. Land management practices, including no-till, cover cropping and crop rotation, and the application of C amendments such as …
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Seasonal and spatial distribution of the mesozooplankton of Southampton Water with particular reference to the contribution of copepods and barnacle larvae to pelagic carbon flux
… of copepods and barnacle larvae to pelagic carbon fluxes. Additional biological and non-biological water column parameters were measured concurrently. A total of 144 different taxa were recorded within the zooplankton of Southampton Water during this study, with 92 identified to species, 30 …
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Diversity of mycorrhizal fungi and carbon nutrition in tropical epiphytic orchids
… which promote the exchange of compounds, mainly carbon, with the host orchid. However, the diversity of mycorrhizal fungi, mainly those belong to Tulasnellaceae, the commonest family of orchid mycorrhizal fungus, as well as the carbon flux in tropical epiphytic orchids are still little known. We …
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Effects of Growth Environment on Aboveground Carbon Budgets in Ponderosa Pine
… could have a significant effect on future forest carbon flux.
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Metabolic network design and engineering in Escherichia coli
… also are highly efficient and robust. Different carbon sources with different oxidation states and transport systems, such as sorbitol and xylose, were used to address the requirements of cofactor NADH and precursor PEP in order to improve succinate synthesis. Phosphoenolpyruvate carboxylase and …
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Optical and radar remote sensing of land use and land cover change in the tropics: An assessment of deforestation and secondary vegetation
… impact of land use in the tropics on net biotic carbon flux requires estimates of rates of deforestation, pre- and post-disturbance biomass, and fate of the cleared land. Synoptic observations of the extent, persistence, rates of secondary succession, and structure or biomass of regrowing forests …
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Lateral carbon export from the southern Benguela upwelling system
… was to quantify the lateral export of organic carbon from the continental shelf of the southern Benguela upwelling system to the open ocean. The flux is potentially important because the Benguela is one of the most productive and biogeochemically active ecosystems in the global ocean. …
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Lateral carbon export from the southern Benguela upwelling system
… was to quantify the lateral export of organic carbon from the continental shelf of the southern Benguela upwelling system to the open ocean. The flux is potentially important because the Benguela is one of the most productive and biogeochemically active ecosystems in the global ocean. …
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Latitudinal variation in plankton size spectra along the Atlantic Ocean
… pelagic food web, and consequently the oceanic carbon cycle. The transfer of energy between trophic levels can be inferred from regular patterns in population size structure, where plots of abundance within size classes, also known as plankton size spectra, typically show a power-law dependence …
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Hormonal regulation of phosphatidylcholine metabolism in Apium graveolens
… pathway coupled to a concomitant increase in flux through the phospholipid methyltransferase pathway upon long term exposure to gibberellic acid in conjunction with a decrease in CTP: phosphocholine cytidylyltransferase activity. Inhibition of phosphatidic acid production in these cultures …
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Gluconeogenic FBP1 plays a key metabolic role in activated T cells
… test the hypothesis that FBP1 activity increases carbon flux into the pentose phosphate pathway (PPP), to facilitate increased production of reducing agent and co-factor, NADPH, in preparation for proliferation. This research could contribute significantly to our understanding of T cell physiology …
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Metabolic Control Analysis of Carbon Pathways
… in unpredictable ways. In the particular case of carbon metabolism, the emergent condition of this complex interaction will be the regulation of the carbon flux through the system. The formal model presented in this dissertation incorporates complex kinetic equations and applies the theory of …
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