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 462 for “"arteries"”.
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Pulsatile blood flow in the arteries
The present study develops the unsteady, nonlinear, two-dimensional partial differential equations for pulsatile flow in a flexible tube. The fluid is assumed to be a Newtonian, incompressible liquid similar to blood. The vessel is modeled as circular in cross section and tapering with increasing …
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Pressure-Induced Intracellular Signaling in Isolated Arteries
… and migration. Vascular smooth muscle of the arteries have been shown to be sensitive to mechanical stimuli such as stretch, and pressure.</p> <p>This study attempts to add to the current knowledge of mechanotransduction by utilizing the isolated artery preparation. This preparation allows for …
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Non-invasive diagnostic methods of intracranial arteries
… tomography angiography (CTA) of intracranial arteries, and finally to evaluate the diagnostic accuracy of CTA in non-traumatic subarachnoid haemorrhage (SAH) compared to DSA and to assess the arterial attenuation (HU) as an image quality factor in this aspect. Follow-up DSA and time-of-flight …
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Turbulent pseudo-sound production in atherosclerotic arteries.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1974. Ph.D.
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Biological relations of the aorta and coronary arteries
… the cross section of the aorta and coronary arteries.
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Ultrasonic Characterization of Human Coronary Arteries and Atherosclerotic Plaques
… ultrasonic properties of human coronary arteries to date. An acoustic microscopy system was developed, refined, and tested for the purposes of acquiring data from fresh: that is, not chemically fixed) coronary artery tissues and atherosclerotic plaques. Novel methods of preparing samples, …
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Homeostatic Elastic States and the Stability of Elastic Arteries
… understand/predict the mechanical stability of arteries in response to diverse stimuli such as inhomogeneities in geometry and material properties. This dissertation seeks to add to this vibrant field by conducting a rigorous analysis of i) the mechanics of the homeostatic states of uniform …
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Analysis of local hemodynamics in central and peripheral arteries
… system, the propagation of waves in arteries has to be investigated, since they carry information which can be used for the prevention and diagnosis of cardiovascular diseases. The main goal of this thesis is to improve the understanding of wave propagation in central and peripheral …
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Some observations on the course of arteries: a study of arterial patterns in man, as exemplified in the placenta, the pulmonary and bronchial arteries, the arteries of the intestine and of skeletal muscle, demonstrating the fundamental relationship between the course of arteries and the function of the organs they supply
A preliminary discussion about the course of arteries with particular reference to anastomoses and end-arteries, and with some observations based on Hilton's work, introduced this investigation. Some of the literature was briefly reviewed, and the different views by different authorities, …
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Signal Transduction and Gene Regulation in Cerebral Arteries Following Ischemia
… molecular events that take place in the cerebral arteries following a stroke. The degree and temporal course of reperfusion following a stroke is pivotal for the survival of the neuronal tissue in the penumbra. Previous investigations have revealed upregulation of contractile receptors, a putative …
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Investigation of the Hemodynamics of Coronary Arteries - Effect of Stenting
… most common modality of treatment of occluded arteries is the use of stents. Despite the widespread use of stents, the incidence of post-stent restenosis is still high. The study of stents in conditions that are similar to in-vivo conditions is limited. This work tries to address the behavior …
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Laminar and Transitional Flow disturbances in Diseased and Stented Arteries
… is dependent on the geometry and compliance of arteries, and pulsatility of blood flow. Understanding of such hemodynamic regulation in relation to atherosclerosis is of significant clinical importance in the prediction and progression of heart disease as well as design of prosthetic devices …
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Interaction between Adrenergic and Nitric Oxide-releasing Nerves in Cerebral Arteries
… of sympathetic nerve activity in cerebral arteries with potential to modulate cerebral circulation.</p> <p>This thesis provides evidence supporting the hypothesis that adrenergic and nNOS nerves co-exist within cerebral arteries and strongly suggest an interaction between these two neuron …
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Endothelin-1 and Hypoxic Vascular Remodeling in Ovine Fetal Cerebral Arteries
… in an ETAdependent manner in Middle Cerebral Arteries (MCAs). ET-1 also exerts trophic effects on ovine fetal cerebrovasculature in organ culture in a PKC-dependent manner by inducing hypertrophy and increasing medial thicknesses, more in normoxic than hypoxic MCAs. ET-1-induced increase in …
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Expression and Function of Ca2+-Activated K+ Channels in Uterine Arteries
… by chronic hypoxia during gestation. Uterine arteries (UAs) were isolated from nonpregnant ewes (NPUAs) and near-term pregnant ewes (PUAs) that had been maintained at sea level (~300 m) or exposed to high altitude (3,801 m) for 110 days. In normoxic animals, both BKCa and SKCa channels were …
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