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 1622 for “"vessel"”.
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Blood Vessel Development
… Cardiovascular function depends on patent blood vessel formation by endothelial cells. In this dissertation, a careful analysis of different aspects of blood vessel development was conducted in order to expand our understandings of the biology of blood vessel. In brief, Chapter 2 provides an in …
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Retinal vessel segmentation using textons
Segmenting vessels from retinal images, like segmentation in many other medical image domains, is a challenging task, as there is no unified way that can be adopted to extract the vessels accurately. However, it is the most critical stage in automatic assessment of various forms of diseases (e.g. …
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Vessel identification in diabetic retinopathy
… namely the identification of the retinal blood vessels in fundus photographs. It de-velops two vessels segmentation strategies and assess their accuracies. A literature review of retinal vascular segmentation found few results, and indicated a need for further development. The two methods for …
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Vessel valuation : an options approach
… the application of real options on operating vessels as strategic decision tools has so far been more or less neglected, since only few players are familiar with the option theory. A charterer operating a vessel may have an agreement with the owner to acquire the ship at some future date, …
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Development of an In-Vitro Tissue Engineered Blood Vessel Mimic Using Human Large Vessel Cell Sources
… and therapies. Specifically, in-vitro blood vessel mimics (BVM) have been developed to create a bench-top blood vessel model using human cells that can be used to test and evaluate vascular disease treatments and intravascular devices. Previous BVM work has used fat derived human …
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Genetics of Cerebral Small Vessel Disease
Cerebral small vessel disease (SVD) is a leading cause of stroke and vascular dementia. The majority of cases are sporadic, occurring in the elderly hypertensive population. However, there also exist patients with familial disease. The most common form is Cerebral Autosomal Dominant Arteriopathy …
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Characterization and Implementation of a Decellularized Porcine Vessel as a Biologic Scaffold for a Blood Vessel Mimic
… recently developed a tissue engineered blood vessel mimic, with the goal of testing intravascular devices. However, the scaffold component of this model exhibits several physiological limitations that must be addressed to create a truly biomemtic BVM. The current model uses expanded …
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hiPSC-Derived Cerebral Small Vessel Disease Models
Cerebral small vessel disease (cSVD) is an umbrella term of disorders that affect the small perforating arteries of the brain and is a major cause of stroke and dementia worldwide, but its pathology is yet to be known. We hypothesise that the integrity of the blood brain barrier (BBB) is disrupted …
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Vessel : a lightweight container for network analysis
… use. The primary contribution of this thesis is Vessel, a tool to supplement existing tools with per-connection instrumentation, improving the ability to perform network analysis tests while providing sufficiently detailed information to identify differences with different tests. Vessel leverages …
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Stresses and flexibilities for pressure vessel attachments
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1984.
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Mathematical modelling of transport across blood vessel walls
… degenerative diseases is filtration across microvessel walls. The role of the microvessel wall is to let oxygen and nutrients contained in the blood stream to reach the interstitium, and ultimately the surrounding cells, while blocking macromolecules. An understanding of these processes is …
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On the origin of cerebral small vessel disease
Contains fulltext : 219047.pdf (Publisher’s version ) (Open Access)
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Sporadic cerebral small vessel disease and cognitive abilities
Cerebral small vessel disease (SVD) is a leading cause of vascular cognitive impairment, contributing to multiple neurological disorders ranging from stroke, to mild cognitive impairment and dementia. However, despite a huge number of studies on the subject, we have a limited understanding of how …
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Unravelling the Genetics of Cerebral Small Vessel Disease
Cerebral small vessel disease (CSVD) is a major cause of stroke and vascular dementia. While CSVD is mostly sporadic (caused by a complex mix of environmental and genetic risk factors), its rare monogenic forms have been increasingly identified. The most common of these, cerebral autosomal dominant …
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Sailing vessel dynamics : investigations into aero-hydrodynamic coupling
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.
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Vessel passage through straits : past, present, and future.
Thesis: M.S., Massachusetts Institute of Technology, Department of Ocean Engineering, 1976
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Dynamic Model of a Small Autonomous Hydrofoil Vessel
This thesis presents the development of a six degree of freedom nonlinear dynamic model for a single-mast fully submerged hydrofoil vehicle. The aim of the model is to aid in evaluating various model-based controllers for autonomous operation by simulating their performance before implementation in …
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Turbulent flame development in a high-pressure combustion vessel
The objective of this work was to extend the range of turbulent burning velocities presented in the literature by performing new measurements at elevated pressures over a range of turbulent velocities, u' (r. m. s. deviation from the mean velocity). The influence of equivalence ratio was …
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Modelling calcite dissolution in a rotating disc reaction vessel
The carbonate system is ubiquitous in nature, playing a role in many natural and industrial processes. For calcite dissolution, the kinetics and mass transport of the dissolved species reflect both the chemistry of the bulk, and the conditions at the dissolving interface. We formulate the …
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