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 68 for “"stress effects"”.
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Stress effects on atomistic kinetic transitions
In this thesis, I studied how the full tensorial stress state applied to a kinetic transition impacts the activation enthalpy. To this end, the activation energy, scalar activation volume, and tensorial activation volume were studied for several kinetic transition types. This computational study …
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Intermittent swim stress effects on anxiety behavior
… animal model of depression (intermittent swim stress) and its possible relationship to anxiety. In the intermittent swim stress (ISS) model, animals experienced 100, 5 second trials of cold water swim stress, and subsequent behavioral and cellular mechanisms were assessed. Behavioral measures …
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Fluid Shear Stress Effects on Cancer Metastasis
… a poorly understood phenomenon. Fluid shear stress is common to all metastatic events but its effects on circulating tumor cells (CTCs) remains a mystery. It is known that shear stress can act either directly, causing membrane rupture and cell death, or by altering cell phenotype via …
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Chronic Shear Stress Effects on Endothelial Cell Response
… of this dissertation is on how chronic shear stress alters the synthesis and secretion of important regulatory molecules by endothelial cells. Our hypothesis was that inclusion of chronic pulsatile shear stress in our model would lead to changes in endothelial cell release of regulatory …
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Chronic Stress Effects on Prefrontal Cortical Structure and Function
<p>Stressful life events have been implicated clinically in the pathogenesis of major depression, but the neural substrates that may account for this observation remain poorly understood. Attentional impairments symptomatic of depression are associated with structural and functional abnormalities …
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Moisture and stress effects on fretting between steel and polyimide coatings
… three polyimides was attributed to the residual stress, which developed upon cooling from the annealing temperature due to the mismatch of thermal expansion coefficients between the polymer and the metal substrate. Calculated from elasticity theory, the normal stress dropped shortly after the …
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Stress Effects on Phase Morphological and Compositional Non-uniformity in Intercalation Compounds
… out to elucidate and predict how coherency stress, which usually arises due to the solute concentration dependence of lattice parameter, impacts the evolution of phase morphology and solute composition distribution in intercalation compounds. In the first topic, the effect of coherency …
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Heat Stress Effects on Cotton During Reproductive Development and Subsequent Acclimation Responses
<p>High temperature stress is among the most difficult to control abiotic factors affecting crop yields in the Southern United States due to its wide regional influence. Cotton (Gossypium hirsutum L.) though a tropical plant in origin, it is sensitive to the effects of high temperature. This is of …
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Surface and mechanical stress effects in AlGaN/GaN high electron mobility transistors
… material, and changes in mechanical stress result in a change in the charge density which in turn affects the maximum current in AlGaN/GaN transistors. Finite element modelling techniques were applied to quantify the mechanical stress distribution in planar AlGaN/GaN RF transistors …
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Residual Stress Effects on Power Slump and Wafer Breakage in GaAs MESFETs
… a precise, non-destructive single crystal stress measurement technique, develop a model to explain the phenomenon known as 3power slump2, and investigate the role of device processing on wafer breakage. All three objectives were successfully met. The single crystal stress technique uses a …
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Temperature Stress Effects on Growth and Nitrogen Assimilation of Soybean(glycine Max, L. Merr.) Seedlings
Made available in DSpace on 2015-05-14T14:57:41Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7412095.PDF: 3687917 bytes, checksum: 6a26bbacc6211dcfdc76bc61343d7f32 (MD5) Previous issue date: 1973
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Surface residual stress effects on stress corrosion cracking/hydrogen embrittlement behavior of AISI 4340 steel
… was performed in an attempt to measure the effects of surface residual stresses on the stress corrosion cracking/hydrogen embrittlement (SCC/HE) behavior of AISI 4340 steel. Stress corrosion tests were performed under load control on cylindrical and notched tensile specimens in acidified …
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Investigation of Temperature, Solution Strength, and Applied Stress Effects on Cation Exchange Processes in Geosynthetic Clay Liners
… test program was conducted to investigate the effects of temperature, solution strength, and applied stress over increasing conditioning durations on cation exchange processes in sodium bentonite (Na-B) geosynthetic clay liners (GCLs). The test program was intended to determine if the variables …
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Incubation temperature and post-hatch stress effects on immune parameters, immune system development, and performance in commercial broilers
… transportation, and vaccination may impose stress upon the embryo and post-hatch chick and impact immune system development and lifetime performance of the bird. The objective of the first study was to evaluate incubation temperature and post-hatch transportation environment on response …
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