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 28 for “"nutrient recycling"”.
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Effects of Raceway Pond Water and Nutrient Recycling on Microalgae Production and Harvesting
… algae biofuel production requires extensive recycling of water and nutrients during algae cultivation. Such recycling can be in the form of reuse of external wastewaters, such as from municipal sewers, but, to achieve significant biofuels production, internal recycling at the algae farms is …
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Water and Nutrient Recycling in High Rate Algae Ponds Fed in Primary Treated Municipal Wastewater
… alternative to petroleum based fuels. Water nutrient recycling is a key step to increase the sustainability of algae biofuel production facilities. This thesis discusses the process of nutrient and water recycling in high rate algae raceway ponds (HRAP) fed primary treated municipal …
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Improving algal biofuel production through nutrient recycling and characterization of photosynthetic anomalies in mutant algae species
… production process that recycles wastewater nutrients into multiple cycles of algal growth, and (2) characterization of potentially advantageous photosynthetic anomalies observed in a mutant strain of green alga species Chlamydomonas reinhardtii. A novel system for algal biofuel production …
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Seasonal and spatial patterns in nitrogen cycling and food web interactions in Lake Taupō New Zealand
… ecosystems, but may still require management of nutrient inputs and fisheries. The ecosystem processes that determine functions in oligotrophic lakes are often distinct from those in eutrophic lakes, which are traditionally more actively managed. This is particularly true for nitrogen cycling …
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Energy in the Corn Belt: Is Maize Production Sustainable?
… production methods changed from a sustainable, nutrient recycling production system to one reliant on imported fossil energy inputs. Located in the Western Corn Belt, Union County, South Dakota was chosen as the study area. Changes in production methods are represented by four technological …
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Dynamics of cicrobial communities associated with <i>Typha angustifolia</i> (cattail) litter in a wetland ecosystem: Effects of litter manipulations on microbial decay processes
… is important in understanding energy flow and nutrient recycling in wetlands. Prior studies examining emergent plant decomposition have often used litter that had been prematurely harvested (senescent) and/or manipulated (oven-dried). I examined the effects of litter manipulations on microbial …
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Hydrothermal processing of biogenic residues in Germany
… decentralised plant concepts with integrated nutrient recycling (e.g. phosphorus), and the development of cost-effective ways to treat process water. System integration, cost-effective process water treatment, and nutrient recycling are all closely linked to production costs, investment costs, …
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Estudo comparativo da Hymenopterofauna detritívora de duas unidades fisiográficas da Restinga da Marambaia (Baía de Sepetiba, Rio de Janeiro, RJ)
… role of the detritivorous arthropofauna on the nutrient recycling on the Neotropical region has been poorly studied. The objective of this study was to estabish the participation parcel of the most abundant group of this detritivorous on two physiographic regions of Marambaia, Rio de Janeiro, …
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Consequences of nitrogen fertilization and soil acidification from acid rain on dissolved carbon and nitrogen stability in the unglaciated Appalachian Mountains
… soluble pools are involved in decomposition and nutrient recycling, the formation of soil organic matter (SOM), and the translation of elements through the biogeochemical continuum from atmospheric to soil to water. Results suggest that N deposition led to reduced organic matter C/N, enhanced net …
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Decoding divergence in marine protistan communities: from strain diversity to basin biogeography
… critical components of primary productivity and nutrient recycling. Protists are genetically diverse and have distinctive ecological niches based on genetically-driven differences in physiological fitness. A deeper understanding of which dimensions of protistan genetic diversity translate to …
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Decoding divergence in marine protistan communities: from strain diversity to basin biogeography
… critical components of primary productivity and nutrient recycling. Protists are genetically diverse and have distinctive ecological niches based on genetically-driven differences in physiological fitness. A deeper understanding of which dimensions of protistan genetic diversity translate to …
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The biogeochemistry of lipid derived infochemical signals in the ocean
… decline may lead to greater flux attenuation and nutrient recycling. A novel lipidomics approach was applied along a cruise track in the California Coastal System revealing that canonical diatom free fatty acids and oxylipins dominated the dissolved lipidome and oxylipin abundance was correlated …
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Ciliate micrograzer dynamics of the New England Shelf
Protists play important roles in grazing and nutrient recycling, but quantifying these roles has been hindered by difficulties in collecting, culturing, and observing these often-delicate cells. During long-term deployments at theMartha’s Vineyard Coastal Observatory (MVCO) (Massachusetts, USA), …
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Unraveling the role of the antifungal peptide AnAFP in Aspergillus niger through a systems biology perspective
… activation of genes associated with autophagy, nutrient recycling, and development. Consequently, it has been suggested that AnAFP may operate as a cannibalistic toxin, promoting programmed cell death and contributing to the progression of development, ultimately ensuring the survival of a …
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Are aquatic food webs vulnerable to copper and gold engineered nanoparticles?
… The interaction between nanoparticles (NPs) and nutrients remains poorly understood within the context of aquatic food webs. To address this interaction, I examined the impacts of a citrate-coated gold nanoparticle (AuNPs) and a commercial pesticide containing Cu(OH)2 nanoparticles (CuNPs) on …
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Ciliate micrograzer dynamics of the New England shelf
Protists play important roles in grazing and nutrient recycling, but quantifying these roles has been hindered by difficulties in collecting, culturing, and observing these often-delicate cells. During long-term deployments at the Martha's Vineyard Coastal Observatory (MVCO) (Massachusetts, USA), …
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The biogeochemistry of lipid derived infochemical signals in the ocean
… decline may lead to greater flux attenuation and nutrient recycling. A novel lipidomics approach was applied along a cruise track in the California Coastal System revealing that canonical diatom free fatty acids and oxylipins dominated the dissolved lipidome and oxylipin abundance was correlated …
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Microbial and metazoan effects on nutrient dynamics during leaf decomposition in streams
I investigated the drivers of nutrient cycling by heterotrophic microbes during leaf decomposition in streams. My research addressed two overarching questions: 1) how do exogenous and endogenous factors interact to drive microbial nitrogen (N) cycling during organic matter decomposition in stream …
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Unraveling the roles of autophagy in proteome dynamics and energy metabolism in plants under abiotic stress
… survival. Autophagy, a conserved intracellular recycling pathway, contributes to the degradation and remobilization of cellular constituents, providing substrates for energy production while maintaining organelle and proteome quality. Despite increasing recognition of its importance, the …
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