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 17 of 17 for “"Flow imaging"”.
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Ultrasonic blood flow imaging using correlation processing
Thesis (Ph. D.)--Michigan State University. Dept. of Electrical Engineering and Systems Science, 1981
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Flow Imaging of the Fluid Mechanics of Multilayer Slide Coating. Flow visualisation of layers formation in a 3-layers slide coating die, measurement of their thicknesses and interfacial and free surface flow instabilities
… the physical properties of the coating fluids), flow instabilities may arise at the interfaces between the layers and on the top layer. These instabilities ruin the application of the final multi-layered coating and must be avoided. This research addresses this coating flow situation and seeks to …
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Mechanistic approaches towards understanding particle formation in biopharmaceutical formations. The role of sufactant type and level on protein conformational stability, as assessed by calorimetry, and on protein size stability as assessed by dynamic light scattering, micro flow imaging and HIAC
Control and analysis of protein aggregation is an increasing challenge to biopharmaceutical research and development. Therefore it is important to understand the interactions, causes and analysis of particles in order to control protein aggregation to enable successful biopharmaceutical …
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Taking Magnetic Resonance into Industrial Applications
… dynamic MR is applied to characterise the flow behaviour, or rheology, of process fluids. Such characterisation is typically performed using conventional rheometry methods operating offline, with an online, or inline, method sought for process control and optimisation. Until recently, MR …
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Tactile tomographic imaging using robotic whiskers
… including nearby object features and fluid-flow characteristics. However, current array sensory systems do not fully utilize tactile sensing strategies extensively used by these animals. This dissertation focuses on developing advanced bio-inspired signal processing algorithms for the …
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Development of a to-scale fluid mixing visualization process for analysis of cold-flow mixing
… two cylinders, three pump systems, as well as an imaging system using a retrofitted green laser. The final model is a tested and proven system for flow imaging of two cold flows within a to-scale fuel-mixer.
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Magnetic Resonance Imaging of the Heart and Vasculature at 3 Tesla: Novel Strategies for the Diagnosis and Risk Stratification of Cardiovascular Disease
… study the effects of field strength and parallel imaging on image contrast and the interstudy reproducibility of right and left ventricular (RV and LV) measurements using steady-state free precession (SSFP) cardiac magnetic resonance; (2) to explore the impact of 3T parallel imaging techniques on …
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Towards imaging cerebral microvascular blood flow using MRI
… capillaries and venules, in which the blood flow velocity is slow (≤ 2 cm/s). The hemodynamic signals, blood oxygenation-level dependent response, cerebral blood flow, cerebral blood volume and cerebral metabolic rate of oxygen are the common surrogate markers to detect brain neural …
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Material phase detection using capacitance tomography
… design of sensor electronics for a tomographic imaging system based on electrical capacitance sensors is of interest in many different engineering applications. This can be especially beneficial in industrial two-component flow systems where capacitance tomography may provide information on how …
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Three-Dimensional Ultrasound Imaging For Blood Flow Assessment In First Carpometacarpal Osteoarthritis
… diagnosis, and treatment. Current clinical imaging modalities, x-ray and magnetic resonance imaging, are limited by their soft tissue contrast, and accessibility, respectively. There is a clinical need for point-of-care imaging tools to improve OA care. This thesis reports on an …
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Backscatter Spatial Coherence for Ultrasonic Image Quality Characterization: Theory and Applications
… designed to automatically and dynamically tune imaging parameters based on image quality feedback, represent a promising solution for reducing the user-dependence of ultrasound. The efficacy of such systems, however, depends on the ability to accurately and reliably measure in vivo image quality …
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The effect of dynamic operation and incoming flow on the wake of a utility-scale wind turbine
… is required. However, modeling wind turbine flows in the laboratory or in simulations is hindered by the wide range of relevant scales and the complexity of atmospheric flow and turbine operation. Because of these limitations, field scale studies are essential. Conventional field scale flow …
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Rheometry and direct flow observations of a model wax-oil system
… using a combined approach of rheology and flow measurement techniques. We describe the design, fabrication and calibration of a quantitative flow imaging apparatus that enables measurements of the local kinematics within the model fluid using Particle Image Velocimetry (PIV). This Rheo-PIV …
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Soft Robotic Platforms for the Simulation of Cardiovascular Disease and Device Development
… of invasive monitoring and 4-dimensional flow imaging techniques, this thesis demonstrates the ability of the aortic sleeve to recapitulate clinically relevant hemodynamics of AS and mimic the complex transvalvular blood flow patterns associated with this disease. The utility of the aortic …
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Three dimensional simulation of functional neuro-vascular imaging
Functional optical imaging has become a powerful tool for measuring physiological parameters in the brain without disrupting normal physiology. Fluorescence lifetime imaging (FLIM) has been shown to allow near real time mapping of oxygen tension in plasma (pO2), and Laser Speckle Contrast Imaging …
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Packed bed reactors at the pellet scale: magnetic resonance studies of hydrodynamics, mass transport and reaction
… use of packed bed reactors in industry, the flow, transport, and reaction phenomena occurring at the scale of individual catalyst pellets is poorly understood due to a lack of experimental techniques capable of non-invasively probing these phenomena at the pellet scale. This thesis presents …
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A Novel Dual-Imaging Approach for Visualizing Multiphase and Droplet Interactions including Shock-Driven Flows
… damage to materials and structures in high-speed flow environments. Studies like these have applications in areas ranging from aerospace engineering to blast mitigation systems, where these interactions play a pivotal role in designing the relevant systems.</p>