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 “"Relative role"”.
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Relative Role of Uncertainty for Predictions of Future Southeastern U.S. Pine Carbon Cycling
Predictions of how forest productivity and carbon sequestration will respond to climate change are essential for making forest management decisions and adapting to future climate. However, current predictions can include considerable uncertainty that is not well quantified. To address the need for …
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The relative role of protozoans in the flux of phytoplankton nitrogen through pelagic food webs
… Microbial pathways thus appear to have a minor role in the· transfer of nitrogen to higher trophic levels, their function being mainly the regeneration of nitrogen for primary producers.
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Genetic ancestry and population health: elucidating the relative role of African genetic ancestry in cancer genomics and the broader implications for racial health disparities in cancer
… variation, may play a critical and underexplored role in shaping cancer risk and outcomes. This thesis investigates how ancestry-linked genetic variants may contribute to cancer development, progression, and disparities between human populations, particularly those found in populations of African …
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Mechanistic understanding of biogenic Mn-oxide mediated bisphenol A degradation
… MnO[subscript 2-bio]. Then, we examined the relative contribution of Mn(III) in BPA degradation by MnO[subscript 2-bio], using R. AzwK-3b as a model organism. In the first study, we demonstrated that R. AzwK-3b and E. SD-21 degraded BPA in absence of Mn(II) which has not been reported …
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Role of Intrinsic and Reflexive Dynamics in the Control of Spinal Stability
… control variability, and may play an important role in the etiology of low-back disorders (LBDs). The primary mechanism for the neuromuscular control of spinal stability is the recruitment and control of active paraspinal muscle stiffness (i.e., trunk stiffness). The two major components of …
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Fish Community Assembly At Multiple Spatial Scales In East Texas Streams
… with anthropogenic change. I investigated the relative role environmental variables play in the processes that structure the taxonomic and functional diversity of stream fish communities, as well as historical trends in occurrence and local habitat associated with a species of greatest …
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Multi-objective topology optimization for trabecular bone-like structure: role of stability and surface area
… provides the flexibility to determine the relative role of the different objectives without the need to specify preset values for constraint functions that may not be directly available. We discuss the implications of our work, particularly in the realm of biomimicry.
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Deuterium NMR relaxation studies of liquids in confined geometries
… of molecular liquids in porous media. The relative role of the pure geometrical confinement and the strength of the surface effect is investigated. The deuteron NMR spin-lattice relaxation times, T$\sb1$, of several molecular liquids in porous silica glasses are reported as function of pore …
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The Relative Roles of Herbivore- and Pollinator-mediated Selection on the Evolution of Floral Display in the Invasive Plant, Lythrum salicaria
… evolution. However, herbivores can also play a role, and, under some circumstances, may even impose stronger selection on floral display than pollinators. This is especially true when the traits under selection are linked to anti-herbivore defense. Here I describe a study in which I quantified …
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Damages in Transparent Materials by Ultrashort Laser Pulse
… determined by fitting experimental results. The relative role of multiphoton ionization and avalanche ionization are numerically studied and the percentage of electron contribution from each ionization channels are investigated.
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Use of Inbred Strains for the Study of Individual Differences in Pain Related Phenotypes in the Mouse
… complex phenotypes. In the first study, the relative role of laboratory environmental factors and genetic factors in pain related phenotypes are explored in a large data archive containing over 8000 observations of a single pain related phenotype. Classification and Regression Tree Analysis …
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Myocardial fibrosis and pathological hypertrophy in the rat with aorta-constricted hypertension
… of ANG II formation. To further distinguish the relative role of hemodynamic and humoral factors in promoting myocardial fibrosis, we used osmotic minipumps to chronically infuse a subpressor dose of ANG II that induced a marked fibrotic response in the rat heart which was similar to the fibrotic …
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Assimilation of altimeter data in a quasi-geostrophic model of the Gulf Stream system : a dynamical perspective
… an eddy component, in order to understand the relative role of these two components in determining the characteristics of the final st atistical steady state, we have considered two different experiments: in the first experiment only the climatological mean field is assimilated, while in the …
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Effects of habitat degradation on the evolutionary dynamics of populations in a rainforest cycad (Gymnospermae)
… can adaptively diverge between habitats, but the relative role of genetic and environmental factors, particularly maternal effects, on the magnitude and rate of genetic differentiation between subpopulations remains to be evaluated. These results suggest that habitat degradation can have important …
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Near Infrared Fluorescent Choline Kinase Inhibitors for Cancer Imaging and Therapy
… contributions from the phospholipases, the relative role of ChoKa is not absolutely discernable in a clinical setting. The goal of this work was to develop ChoKa-specific imaging probes to assist in the development of ChoKa as a diagnostic biomarker and therapeutic target. A series of …
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Simulating the Social Dynamics of Spatial Disparity Through Neighborhood Network Evolution
… to observed migration patterns to discern the relative role of social influence on neighborhood choice. With the calibrated model, policy scenarios may be explored to help communities avoid a fate of fragmentation. The significance of this project is at once substantive, in addressing the …
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Landing behaviour of the host seeking malaria vector anopheles coluzzii in response to host associated cues
… Thus, this research aimed to 1) quantify the relative effect that host-associated stimuli have on landing response, 2) quantify the effect that physical target characteristics have on flight behaviour and landing response, and 3) characterise pre- and post-landing behaviour and feeding success …
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The role of thermal history in shaping the microbiome of Red Sea corals
… day populations acclimatized to thrive under relatively extreme conditions. Whilst corals thrive along a range of environmental conditions, including relative extremes, within the Red Sea, these coral populations are still considered not well explored of the genetic and physiological …
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The influence of mass media on countryside leisure visit behaviour compared to the influence of childhood socialization: a structural model of relationships.
… has been recognised as playing an important role in sustaining this attachment but its relative influence compared to the role of the family, other social groups and education is less well understood in this context. The aim of this research is to provide a measure of the influences that …
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Forest Mortality in Lake Tahoe Basin from 1985-2010: Influences of Forest Type, Stand Density, Topography and Climate
… highlight the need for further study into the relative role of species traits, stand characteristics, insect herbivory, and climate for influencing forest mortality at both stand and landscape scales. Variable response to both climate and stand density means that scientists should be cautious …
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