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 15 of 15 for “"carbon utilization"”.
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Alternative Carbon Utilization As A Virulence Determinant For Candida Albicans
… macrophage phagosome by upregulating alternative carbon utilization processes. The utilization of three alternative carbon sources particularly contribute to <em>C. albicans </em>pathogenesis: carboxylic acids, amino acids, and <em>N</em>-acetylglucosamine. Studied individually, utilization of …
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Evaluation of Alternative Electron Donors for Denitifying Moving Bed Biofilm Reactors (MBBRs)
… has clearly been the most commonly used external carbon source for post-denitrification processes due to low cost and effectiveness. However, with the requirement for more US wastewater treatment plants to reach effluent total nitrogen levels approaching 3 mg/L, alternative electron donors could …
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Sustainability implications of carbon delivery in microalgae cultivation for the production of biofuel
Supplementation of carbon is critical for high productivity cultivation of most microalgae. Moreover, using microalgae for atmospheric CO2 mitigation to combat climate change is promising, as waste sources and atmospheric CO2 can be utilized to produce useful products. The challenge is developing …
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The roles of secondary metabolites in microcystis inter-strain interactions
… knockout and the SigE-mediated regulation of carbon metabolism is found. According to the acquired transcriptional data, a model is proposed that postulates the regulating effect of microcystin on transcriptional regulators such as the alternative sigma factor SigE, which in return captures an …
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Differential Utilization of Allochthonous and Autochthonous Carbon By Aquatic Insects of Two Shrub-Steppe Desert Spring-Streams: A Stable Carbon Isotope Analysis and Critique of the Method
<p>Stable carbon isotope analysis, a technique that measures the ratio of stable carbon-12 to stable carbon-13 in abiotic and biotic components of ecosystems, was used to assess the differential utilization of autochthonous and allochthonous carbon by aquatic insects of two cold desert …
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Microbial Dynamics and Mechanistic Insights into a Hydrogenotrophic Denitrifying Microbial Consortium
… strain’s dominance was likely facilitated by a bicarbonate transporter allowing for more efficient carbon utilization by this strain. The consortium could tolerate a salinity up to 3%, highlighting its robustness and adaptability. Further investigations into this consortium unveiled its utility …
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Investigation of Novel Virulence Mechanisms In Candida Albicans
… for its recognition and clearance. Alternative carbon utilization has been shown throughout the years to be an essential requirement for <em>C. albicans </em>in host-pathogen interaction models. This idea is expanded in this thesis by the discovery of additional genetic contributors to pH …
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Effects of Sulfide and pH on Microbial Sulfate Reducing Efficiency
… SRB consortium which ran for 2 years. The 200 % carbon columns were able to reduce more sulfate than the 50 % columns, although the carbon utilization efficiency of the 50 % columns was greater. For the 21-day static bottle SRB experiments, the best pH range was 7 to 8. The difference between the …
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Ecotoxicity of silver nanoparticles on estuarine and coastal bacterial communities
… 6 mg Ag kg dry weight-1 decreased the bacterial carbon utilization rate of environmentally relevant carbon substrates. Following a 24 hr exposure the functional diversity changed, but recovered after 120 hr. This recovery may be explained by a number of possible factors, such as the formation of …
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Substrate Utilization of the Emerging Fungal Pathogen, Candida auris, and the Antifungal Activity of Select Essential Oils
… a variety of chemicals as a sole source of carbon or nitrogen was determined and compared to related yeasts. <em>Candida auris</em> displayed a unique pattern of carbon and nitrogen assimilation as compared to the other, related species. This included several carbon sources that may have …
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CO2 Derived Carbon Capture Using Microalgae in a PhotoBioCREC Unit
Microalgae has the potential to contribute to carbon dioxide capture, resulting in the production of alternative fuels and valuable chemical products. To accomplish this, high-efficiency photobioreactors must be conceptualized, designed, and established, in order to achieve high inorganic carbon …
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Carbon Sequestration Through the Production of Precipitated Calcium Carbonate From Waste Concrete
… activities, rising concentrations of atmospheric carbon dioxide (CO2) are causing climate change. One method to sequester CO2 involves the production of synthetic limestone (CaCO3) from calcium silicate minerals and CO2 via mineral carbonation. Certain grades of CaCO3, including Precipitated …
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Evaluation of Glycerol and Waste Alcohol as Supplemental Carbon Sources for Denitrification
Supplemental carbon has been successfully added and implemented at biological nutrient removal treatment plants all around the world in order to reach low nitrogen discharge limits. Although, methanol has been the most prevalent external electron donor used due to its low cost and effectiveness, …
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Developing durable electrodes for selective electroreduction of CO2 to value-added intermediates
… the population. Specifically, rising excess carbon dioxide (CO2) emissions (over 14 Gt CO2 per year) has pushed the atmospheric CO2 concentration to over 400 ppm. This high atmospheric CO2 (and other greenhouse gases) concentration has been linked to rising global temperatures and climate …
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Investigation of Regulatory Mechanisms of Chemical-Mediated Fruit Thinning in Apple (Malus X Domestica Borkh.)
… cycle, cell wall biosynthesis, photosynthesis, carbon fixation, chromatin assembly, auxin transport/efflux, cytoskeleton function, and flower development were generally downregulated. Comparison of changes in the gene expression patterns during NAA-induced fruit abscission with shading-induced …