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 62 for “"nutrient transport"”.
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Nutrient Transport During Hypoperfusion
… functions, such as ion exchange, access to nutrients and energy production, and is believed to play a pathogenic role in both necrotizing enterocolitis (NEC) and nonocclusive small bowel necrosis (NOSBN). It is postulated that the detrimental effects of hypoperfusion are further compounded …
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Nutrient Transport in the Lake Poinsett System
Concentrations and loads of nutrients transported through the Lake Poinsett system were monitored from April 1, 1970 to April 1, 1971. An annual 2.07x 10~ m3 surface discharge into Lake Poinsett transported 1.66 x 104 kg (PO4) phosphorus, 1.28 x 104 kg nitrate nitrogen, and 3.90 x 104 kg organic …
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ENHANCED SOIL STRUCTURING BENEATH WHITE CLOVER AND ITS IMPACT ON NUTRIENT TRANSPORT
… has important implications for the pollutant transport qualities of soils and for the organic/conventional agriculture debate. Re-packed soil columns of four soil series and 0.5 m intact monoliths of the Crediton series were planted with white clover, perennial ryegrass and a mixture of the …
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Water and nutrient transport dynamics during the irrigation of containerized nursery crops
… via reduced water loss, enhances crop-available nutrients while reducing non-point source agrichemical contributions in accordance with regulatory standards. Previous studies detailed nutrient leaching patterns throughout crop production seasons, leaving little known about water and dissolved …
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Investigations into the effects of berry flavonoids on nutrient transport processes in Caco-2 enterocytes
… are known to interact with a number of membrane transporters, influencing the rate of intestinal nutrient absorption. The transcriptional effects and consequences of such interactions remained to be fully elucidated. To address this we carried out gene expression microarray analysis on intestinal …
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Mathematical modelling of brain tumour growth. Integrating mechanics, phenotypic evolution, and nutrient transport to describe anisotropic behaviour and personalised therapies.
L'abstract è presente nell'allegato / the abstract is in the attachment
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Impact of virginiamycin on the development of intestinal structure and functional capacity in growing pigs
… would increase intestinal surface area and nutrient processing capacity compared with diets without virginiamycin. Littermate barrows with similar body weight (n=72; 23.0±1.3 kg; 9 weeks of age) were randomized to pens and pens were randomized to one of three treatment groups (0, 11, or 27.5 …
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The NAM-B1 transcription factor and the control of grain composition in wheat
… grain protein content, alters grain micronutrient content and accelerates monocarpic senescence, often without imposing a yield penalty. The aim of this thesis was to understand the mechanisms by which NAM-B1 influences nutrient remobilisation and monocarpic senescence to cause these …
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Modification of the SWAT Model to Simulate Hydrologic Processes in a Karst-influenced Watershed
… their ability to model both discharge and nutrient transport in karst watersheds. The Soil Water Assessment Tool (SWAT) model was found to be appropriate due to its capability to represent almost all of the hydrological processes, its user-friendliness, and its ability to generate most of …
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Inverse opal hydrogel scaffolds as lymphoid microenvironments for the study of immune cell migration and immunotherapy
… of a macroporous structure, including improved nutrient transport and a defined space for cell interactions.
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Mechanistic modeling of bacterial nutrient uptake strategies
… me to quantify the costs and benefits of various nutrient uptake strategies. I find that: (i) a sensing-uptake trade-off governs E. coli's regulation of maltose uptake and chemotaxis to maltose; (ii) a rate-affinity trade-off in nutrient transport systems governs the speciation of marine …
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A computer simulation model for investigating the effect of land application of sludge on runoff water quality
… the nitrogen (N) transformations and subsequent nutrient transport processes which occur in the soil following organic waste applications. CREAMS-NT accounts for nutrient addition through fertilization and rainfall and losses of N by volatilization, denitrification, plant uptake, leaching, and …
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Synthesis of climate-water-food nexus in Illinois – data analysis and modeling
… The model was calibrated for hydrology, nutrient transport and crop yield. The model was then forced with the bias-corrected climate projections data and the impacts of climate change on hydrology, nutrient transport and crop yield was analyzed. No significant change in average daily, …
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Temporal and spatial scaling of coupled hydrological and biogeochemical processes in river basins
The goal of this dissertation is to understand nutrient delivery processes in river networks, including the processes and factors controlling both the flow generation and nutrient retention mechanisms. An analysis framework that synthesizes the bottom-up and top-down approaches is implemented in …
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Embedded microvascular networks for electronically reconfigurable materials
… as damage repair, temperature regulation, and nutrient transport. Biological vasculature has inspired the use of microfluidic networks in various synthetic materials to achieve similar functionality such as vascular-based healing and cooling in structural composites. A recent use of …
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Extreme weather events in the upper Midwest: Implications on flood risk, crop yield, and water quality
… relationship between extreme precipitation and nutrient transport, revealing increased risks of nutrient losses under intensified precipitation scenarios. This comprehensive research provides valuable insights for enhancing community resilience, improving agricultural management, and developing …
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Development and analysis of the measured annual nutrient loads from agricultural environments (manage) drainage nutrient concentration database
… to understand the mechanisms responsible for nutrient transport from this land use leading to the eutrophication of surface waters and the hypoxic zone in the Gulf of Mexico. It is also vital to understand the effects of management practices in drained systems, as subsurface drains are …
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Linking Streamflow Trends with Land Cover Change in a Southern US Water Tower
… aspects of stream geomorphology, sediment and nutrient transport, and ecological processes. Using the non-parametric modified Mann-Kendall test, we analyzed streamflow trends from 1996 to 2022 for the Southern Appalachian (SA) region of the U.S. The forested uplands of the SA receive high …
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Development of an endometrial inspired biomaterial
… to biomaterial cultures and implants is nutrient transport. Unlike native tissue which contains a dense vascular network to provide nutrients and eliminate waste, biomaterials rely solely on diffusive transport which is often insufficient at maintaining cellular behavior of implants, …
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