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Dissertations / Theses on the topic 'Resistance to the vessel'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kneale, Barry J. "The influence of gender on forearm resistance vessel function." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312451.

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2

Heygate, Katherine M. "Resistance vessel structure and function in an experimental and genetic model of insulin-dependent diabetes mellitus." Thesis, University of Leicester, 1996. http://hdl.handle.net/2381/34106.

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Microvascular disease is a major complication of diabetes but little is known about how diabetes effects the precapillary resistance arteries. The work described in this thesis was designed to investigate the effects of insulin-dependent diabetes on the structure and function of the resistance vasculature, using an experimental and genetic animal model of diabetes. Preliminary in vitro studies of normal resistance arteries showed that hyperglycaemia (40mM glucose) resulted in impaired endothelium-dependent relaxation to the vasodilator acetylcholine (ACh). This effect was shown to not be due t

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3

Lechthaler, Silvia. "The hydraulic architecture of the plants: study of the allometric relations in stem and leaves." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3426838.

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The xylem in plants is formed by interconnected dead cells that allow the flow of water from the roots to the leaves. The ascent of sap is mainly passive and it is driven by water evaporation from the mesophyll cell walls in the leaf. The water evaporation generates capillary suction on the menisci at the micro-porous of cell walls, causing negative hydrostatic pressure that propagates down the water column in the xylem. Due to plants grow in height the length of the hydraulic path increases progressively posing the question whether the hydraulic resistance increases accordingly. There is evid

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4

Razavi, Habib M. "Conduit versus resistance blood vessels, adrenoceptors and nitric oxide." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0011/MQ40846.pdf.

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5

Valero, Carlos Alberto Mojica. "Efeito da superestrutura sobre a resistência longitudinal de embarcações de pequeno porte: aplicação e análise estrutural para um navio militar da Marinha Colombiana." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-13082008-151753/.

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O propósito do presente trabalho é desenvolver a avaliação estrutural de um navio \"Nodriza\" de pequeno porte de aplicação militar e cujo projeto inicial foi orientado à navegação em águas abrigadas com restrições de calado. Porém, requisitos e necessidades afetando a concepção inicial do projeto obrigam este a efetuar percursos em águas profundas com possibilidade de experimentar ciclos de onda. A avaliação estrutural pretende determinar o nível de influência da superestrutura sobre a resistência longitudinal do navio considerando-o submetido a esforços solicitantes próprios de águas não abr

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6

Bradley, Frederick Joseph. "Thermal shock resistance parameters for the industrial lining problem." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25568.

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A two-dimensional constant heating rate thermoelastic model has been used to develop design and selection criteria for refractory components of linings of high-temperature furnaces and process vessels. The criteria are in the form of resistance to fracture initiation and resistance to damage parameters which account for the influence of thermal and mechanical properties, geometry, and temperature range, while distinguishing between the heating and cooling cases. The resistance to fracture initiation parameter ɸs is the maximum rate at which a shape can be heated or cooled through a specified t

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7

Robards, Simon William Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "The hydrodynamics of high-speed transom-stern vessels." Publisher:University of New South Wales. Mechanical & Manufacturing Engineering, 2008. http://handle.unsw.edu.au/1959.4/42782.

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In the design of all marine craft the prediction of a vessel??s resistance characteristics is a major consideration. The accurate prediction of resistance is particularly important in the design of modern high-speed vessels where the primary contractual obligation placed upon the builder is the vessel??s achievable speed. Investigation was made of the methods of Doctors and Day, whereby the traditional Michell wave-resistance theory, published in 1898, is improved on through a better understanding of the hydrodynamics of transom sterns and the application of statistically determined form facto

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8

Zouridakis, Fragiskos. "A preliminary design tool for resistance and powering prediction of catamaran vessels." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33595.

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Thesis (Nav. E. and S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2005.<br>Includes bibliographical references (p. 86-87).<br>During the last decade catamaran ships have been very rapidly evolved into a dominant mode of sea transportation. Their particular area of proliferation is the short sea shipping where they show considerable superiority over competitive designs in attributes such as power requirements, economy, space availability and seakeeping. The rapid growth of the market has led to the need for an expanded range of catamaran designs in terms of size, spe

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9

Forrest, Andrew E. "Gas-liquid mixing in stirred vessels imaged using electrical resistance tomography (ERT)." Thesis, University of Manchester, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488332.

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A considerable effort has been invested over the past forty or so years in attempting to thoroughly understand the basic mechanisms which govern the dispersion of gas inside mechanically stirred mixing vessels. Previous research has concentrated on visual flow studies of gas-liquid flow structures and on measurement of overall properties such as agitator power consumption and gas hold-up. Any local measurements have usually been obtained intrusively and are point-wise giving limited information about the internal flow regime. The evolution of tomographic techniques for non-medical applications

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10

Berggren, Axel, and Ebba Lindh. "ICE LOADS AND RESISTANCES ON A SMALL COMMUTER VESSEL : A comparative study of rule based design and analytical ice loads and resistances." Thesis, KTH, Marina system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-162063.

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The aim of the thesis is to investigate what the results are when applying DNV ice class design rules on a vessel that falls outside the validity range and how it does compare to direct calculations. The vessel to be investigated is a smaller ice going commuter ferry intended for freshwater Lake Mälaren in Stockholm. Due to increased need of public transport in the area, political decisions have been made to incorporate ferry lines in the public transport system. The number of commuters’ peak during January and February and it is thus necessary to design a ferry that works all year around, in

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11

Vinciguerra, Iolanda. "CD8 T cells with constitutively active PI3Kγ induce hypertension in mice and increase myogenic tone of resistance arteries". Doctoral thesis, Università degli studi del Molise, 2019. http://hdl.handle.net/11695/86358.

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L’ipertensione è una condizione clinica caratterizzata da elevati valori di pressione arteriosa ed associata a danno cardiaco, renale e vascolare. Eziologicamente è definita come essenziale, se la causa non è ben identificabile, o come secondaria, se l’incremento di pressione ha un’origine nota. Il trattamento consiste nella modificazione dello stile di vita e nella somministrazione di trattamenti antipertensivi; nonostante ciò sono riscontrabili alcune forme di ipertensione farmaco-resistente. Ricercare i meccanismi alla base della patologia risulta, quindi, importante al fine di individuare

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12

McCulloch, Audrey I. "The regulation and modulation of potassium channels by endogenous mediators in rat resistance vessels." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363905.

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13

Ahmad, Hafiz Bashir. "Intraspecific variability in embolism resistance and functional trade-offs in sunflower (Helianthus annuus L.) and Maritime pine (Pinus pinaster Ait.)." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0747/document.

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Plusieurs études ont montré que la productivité des forêts et des cultures décroît sur l’ensemble de la planète en réponse au changement climatique, et que les risques de mortalité liée à la sécheresse s’accroissent. Ces mortalités massives ont été observées dans tous les écosystèmes forestiers et seraient dues à un dysfonctionnement hydraulique des plantes, causé par de l’embolie xylémiène. Le spectre interspécifique de résistance à l'embolie a été largement étudiée, mais peu d'attention a été accordée à la variabilité intra-spécifique de ce trait. C’est pourquoi, l’objectif de ce travail de

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14

Lyons, Declan. "The renin-angiotensin system : interaction with other homeostatic systems in upper limb resistance vessels in man." Thesis, University of Aberdeen, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259669.

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The thesis is concerned with the interaction of the renin-angiotensin system (RAS) with other homeostatic systems in the peripheral circulation of man. The activity of the RAS and is relationship to vascular tissue ACE, the arginine-nitric oxide system, the kallikrein-kinin system and the sympathetic nervous system are examined. The activity of a new orally active angiotensin (AT<sub>1</sub>) receptor antagonist and the regulation of AT receptors in response to low circulating angiotensin II concentrations are also assessed. Forearm venous occlusion plethysmography with mercury-in-silastic str

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15

Miller, Alastair Leslie. "Investigation of the mechanisms underlying the myogenic response in resistance blood vessels from the rat cerebral vasculature." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322245.

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16

Rouanne, Mathieu. "Mechanisms of Resistance to BCG Immunotherapy in Bladder Cancer." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS342.

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Le cancer de la vessie est le 9ème cancer le plus fréquent avec 435 000 nouveaux cas diagnostiqués chaque année et 165 000 décès par an dans le monde. Au diagnostic, 70-80% des cancers de la vessie sont tumeurs superficielles n’infiltrant pas le muscle vésical (TVNIM). Depuis près de 40 ans, les instillations intra-vésicales de bacille de Calmette-Guérin (BCG) sont le traitement de référence des TVNIM ayant un risque élevé de progression (T1, carcinome in situ, Ta haut grade). Malgré un traitement bien conduit, le taux de récidive est d'environ 50%, et la progression vers une tumeur infiltrant

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17

Ngonya, Karen Wanjiru. "Kongolese Peasant Christianity and Its Influence on Resistance in Eighteenth-and Nineteenth-Century South Carolina." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250192500.

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18

Wolfe, Jeremy Dean. "Vessel Formation and Feeder Vessel Treatment in Choroidal Neovascularization." University of Toledo Health Science Campus / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=mco1095878383.

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19

Wyatt, Hayley Louise. "Electrosurgical vessel sealing." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/59830/.

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Electrosurgical vessel sealing devices have been demonstrated to reduce patient blood loss and operative time during surgery. Whilst the benefits of such devices are widely reported there is still a large variation in the quality of the seal produced, with factors such as vessel size known to effect seal quality. The study aimed to investigate parameters affecting device performance and improve the seal quality. The burst pressure test was used to assess the seal quality and tissue adhesion was measured using a peel test. Additionally histology techniques were used to quantify vessel morpholog

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20

Grieff, Stacey. "The Raddled Vessel." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/2958.

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The wearing effects of being overworked and in somewhat poor health are reflected in my paintings, ceramic work, and mixed media pieces. I use old and dilapidated materials such as window frames, instrument cases, and wood to symbolically address my physical and emotional states. I reuse items from the past that show a sense of fatigue, tattered edges, and deterioration. Like these objects I felt run down, old, and at times, useless. However, I am comforted by the idea that old objects can, with some care, regain new life. I have discovered I seek my own rejuvenation through my creativity. As

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21

Carroll, Alice. "The contemporary vessel /." Online version of thesis, 1992. http://hdl.handle.net/1850/11622.

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22

Suwal, Pasang Sherpa. "Passive Acoustic Vessel Localization." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/757.

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This thesis investigates the development of a low-cost passive acoustic system for localizing moving vessels to monitor areas where human activities such as fishing, snorkeling and poaching are restricted. The system uses several off-the-shelf sensors with unsynchronized clocks where the Time Difference of Arrival (TDOA) or time delay is extracted by cross-correlation of the signal between paired sensors. The cross-correlation function uses phase correlation or Phase Transform (PHAT) which whitens the cross-spectrum in order to de-emphasize dominant frequency components. Using the locations of

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23

Masterson, Richard Garrett. "Torso as ceramic vessel." PDXScholar, 1990. https://pdxscholar.library.pdx.edu/open_access_etds/4141.

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The ceramic forms in this thesis project represent a study of the sculptural and figurative qualities of the ceramic process. This study includes a search for a personal form language, development of the slab construction technique, and development of a glazed surface appropriate to the work. The subject of the work is the human torso, with the vessel-like forms focusing on the core of the body as a metaphor for the core of the human spirit.

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24

Kaha, Myra. "The vessel and the sacred." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4791.

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Thesis (M.F.A.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains v, 15 p. : col. ill. Vita. Includes abstract. Includes bibliographical references (p. 13).

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25

Teng, Thomas Bart. "Vessel identification in diabetic retinopathy." Thesis, Bournemouth University, 2003. http://eprints.bournemouth.ac.uk/441/.

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Diabetic retinopathy is the single largest cause of sight loss and blindness in 18 to 65 year olds. Screening programs for the estimated one to six per- cent of the diabetic population have been demonstrated to be cost and sight saving, howeverthere are insufficient screening resources. Automatic screen-ing systems may help solve this resource short fall. This thesis reports on research into an aspect of automatic grading of diabetic retinopathy; namely the identification of the retinal blood vessels in fundus photographs. It de-velops two vessels segmentation strategies and assess their accur

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26

Largiadèr, Caspar Andri 1965. "Vessel valuation : an options approach." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/8991.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1999.<br>Includes bibliographical references (p. 74-75).<br>In the field of capital budgeting traditionally the widely accepted net-present-value (NPV) technique is used to capture a project's value. However, this approach fails to quantify managerial and operational flexibility and strategic interactions. The underlying analysis deals with the subject of resource allocation or capital budgeting under uncertainty, particularly with the valuation of managerial and operating flexibility as real options. Similar to

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27

Zhang, Lei. "Retinal vessel segmentation using textons." Thesis, University of East Anglia, 2014. https://ueaeprints.uea.ac.uk/54401/.

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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. Glaucoma, Age-related macular degeneration, diabetic retinopathy and cardiovascular diseases etc.). Our research aims to investigate retinal image segmentation approaches based on textons as they provide a compact description of texture that can be learnt from a training set. This thesis presents a br

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28

Rooney, Colum. "Blood vessel diameter in glaucoma." Thesis, Aston University, 2016. http://publications.aston.ac.uk/30071/.

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Glaucoma is a leading cause of visual disability in the UK and major referral reason between high street optometry and hospital based ophthalmology. The standard optometric tests used to determine necessity of referral are currently leading to a high false positive burden on glaucoma clinics. The disease of glaucoma is considered to be multifactorial in the reasons for its onset and progression. An increasing body of research proposes a vascular dysregulation hypothesis, and retinal artery diameter reduction, as a recognisable risk factor for both the onset and progression of glaucoma. The Hei

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29

Eckerd, K. Richard. "Glass : beyond the archetypal vessel /." Online version of thesis, 1996. http://hdl.handle.net/1850/12204.

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30

U, Paul Lykhun. "Blood vessel healing with lasers." Thesis, Queensland University of Technology, 1989. https://eprints.qut.edu.au/35987/1/35987_U_1989.pdf.

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This study represents the investigation of a test protocol involving the use of laser for vascular welding. Laser parameters which related to the delivery of energy for laser interaction were investigated by using the argon laser and the copper vapour laser. Thermal aspects of laser interaction with the blood vessel specimen were examined with both lasers. The surface temperature of specimen was recorded with a thermocouple system using the copper-constantan type of wires. The measurement of the time-dependence and the spatial distribution of tissue temperature were used to estimate

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31

Zhou, Zhengquan. "A theory and analysis of planing catamarans in calm and rough water." ScholarWorks@UNO, 2003. http://louisdl.louislibraries.org/u?/NOD,45.

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Thesis (Ph.D)--University of New Orleans, 2003.<br>Title from electronic submission form. "A dissertation ... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering and Applied Science"--Dissertation t.p. Vita. Includes bibliographical references.

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32

Stenzel, D. "Functional diversity of extracellular matrix components during vessel migration, endothelial sprouting and blood vessel stabilization." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/18782/.

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The formation of mature blood vessels requires recruitment of mural cells (MC) and generation of an extracellular matrix in order to stabilize and support the nascent vessel. The precise sequence of basement membrane protein expression and function during initiation, elongation and stabilization of the angiogenic sprout remains unclear. The first project describes a function of astrocytic Fibronectin (FN) in guided vessel migration. Integrin-binding is dispensable for fibrilliar FN assembly but mediates endothelial cell adhesion in vivo. VEGF-A dependent migration of retinal vessels requires P

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33

Delagrammaticas, Dimitri E. "Development of an In-Vitro Tissue Engineered Blood Vessel Mimic Using Human Large Vessel Cell Sources." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/79.

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Tissue engineering is an emerging field that offers novel and unmatched potential medical therapies and treatments. While the vast aim of tissue engineering endeavors is to provide clinically implantable constructs, secondary applications have been developed to utilize tissue-engineered constructs for in-vitro evaluation of devices 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

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34

Elyas, S. P. "Differences in vascular function between small vessel disease (SVD) stroke and atherosclerotic large vessel (LVD) stroke." Thesis, Exeter and Plymouth Peninsula Medical School, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.700492.

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35

Sanfilippo, Giorgia. "Turbulence in not fully filled vessel." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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In many chemical and biotechnological processes, mixing represents one of the fundamental unit operations, object of interest in chemical, pharmaceutical and food industries. Mixing efficiency is strongly influenced by the design and operating conditions chosen. The flow field study is important to understand which mechanism takes place in the fluid inside the stirred tank, in particular to characterize the property of the fluid and, to do that, a widely investigation techniques are used. This experimental work was carried out during the “Erasmus + for traineeship” project carried out at the

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36

von, Fahnestock Frank Michael. "Niche applications of in-vessel composting." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127237412.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xvii, 233 p.; also includes graphics (some col.). Includes bibliographical references (p. 185-192). Available online via OhioLINK's ETD Center

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Nar, Fatih. "Vessel Segmentation Using Shallow Water Equations." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613197/index.pdf.

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This thesis investigates the feasibility of using fluid flow as a deformable model for segmenting vessels in 2D and 3D medical images. Exploiting fluid flow in vessel segmentation is biologically plausible since vessels naturally provide the medium for blood transportation. Fluid flow can be used as a basis for powerful vessel segmentation because streaming fluid regions can merge and split providing topological adaptivity. In addition, the fluid can also flow through small gaps formed by imaging artifacts building connections between disconnected areas. In our study, due to their simplicity,

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38

Bower, Thomas Charles. "Fishing vessel optimization : a design tool." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25082.

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Rising fuel costs and decreased catch sizes have reduced the fishing vessel owners profit margin. This has caused the owners to try to find methods that reduce the costs of their operations. In this thesis a tool which can be used by fishing vessel designers, and operators, is developed for use at the preliminary ship design stage. It is used to determine the best fishing vessel parameters for a given operational scenario found on the West Coast of Canada.<br>Applied Science, Faculty of<br>Mechanical Engineering, Department of<br>Graduate

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Brown, Sandra Lois School of Design UNSW. "Significance, the vessel and the domestic." Awarded by:University of New South Wales. School of Design, 2004. http://handle.unsw.edu.au/1959.4/20761.

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Throughout history, people have made or acquired vessels from which to sip their favourite beverage. In the contemporary domestic setting, households frequently accumulate multiples of the same type of object in numbers that are considerably greater than is necessary and practical for use alone. Of these many objects there are often individual pieces that have special significance for the owner or user. Some are so valued that they may even be removed and set aside because of their perceived importance. The research was initiated by a previous study of tea drinking vessels coupled with a d

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Reinertsen, Ingerid R. "Vessel driven correction of brain-shift." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111865.

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The displacement and deformation of brain tissue is a major source of error in image-guided neurosurgery systems. This thesis presents the design, implementation and validation of an image registration algortithm to detect and correct brain-shift using pre-operative MR images and intraoperative Doppler ultrasound data. The registration algorithm uses segmented vessels from both modalities, and estimates the displacement using a modified version of the iterative closest point (ICP) algorithm. The least trimmed squares (LTS) was used to reduce the number of outliers in the point matching procedu

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Zhu, Lei. "Design optimization of pressure vessel shapes." Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248480.

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42

Tan, Yan Ying Rhea. "Genetics of cerebral small vessel disease." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283203.

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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 with Subcortical Infarcts and Leukoencephalopathy (CADASIL), caused by mutations in the NOTCH3 gene. In recent years, other genes have also been found to cause familial SVD, such as COL4A1/A2, HTRA1, FOXC1 and TREX1. Genome wide association studies (GWAS) have also revealed loci associated with sporadi

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Potter, Gillian Margaret. "Neuroimaging of cerebral small vessel disease." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5598.

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Lacunar stroke accounts for one quarter of all ischaemic stroke and in the long term carries a greater risk of death and disability than was previously realised. Much of our current knowledge originated from neuropathological studies in the 1950s and 1960s. In the last thirty years, brain computed tomography (CT) and magnetic resonance imaging (MRI) have revolutionised our understanding of lacunar stroke and associated features of cerebral small vessel disease (SVD), namely white matter lesions (WML), enlarged perivascular spaces (EPVS) and brain microbleeds (BMB). The purpose of the projects

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Gordon, Mark. "From vessel volumetrics to organic geometics." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1327527145.

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45

Amatruda, Claudia Maria. "Multiscale modelling of stent/vessel interactions." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/12229/.

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Angioplasty with stenting re-opens stenosed arteries, but in-stent restenosis remains a common negative outcome. Correlations between local mechanical stimuli and ISR have been reported, explained by mechanotransduction mechanisms that influence cell behaviour. This thesis investigates the loads imposed on the coronary artery following stent implantation. The changes in mechanical stimuli in a vessel following stent deployment were initially considered using a simple MATLAB model, followed by analysis of a 2D cross-section model to represent variation of stress with stent strut distribution. T

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Smith, Aubrey N. "CHARACTERIZATION AND IMPLEMENTATION OF A DECELLULARIZED PORCINE VESSEL AS A BIOLOGIC SCAFFOLD FOR A BLOOD VESSEL MIMIC." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/589.

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Every 34 seconds, someone in the United States suffers from a heart attack. Most heart attacks are caused by atherosclerotic build up in the coronary arteries, occluding normal blood flow. Balloon angioplasty procedures in combination with a metal stent often result in successful restoration of normal blood flow. However, bare metal stents often lead to restenosis and other complications. To compensate for this problem, industry has created drug-eluting stents to promote healing of the artery wall post stenting. These stents are continually advancing toward better drug-eluting designs and

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Goronovski, Andrei. "Influence of In-vessel Pressure and Corium Melt Properties on Global Vessel Wall Failure of Nordic-type BWRs." Thesis, KTH, Kärnkraftsäkerhet, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139534.

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The goal of the present study is to investigate the effect of different scenarios of core degradation in a Nordic-type BWR (boiling water reactor) on the reactor pressure vessel failure mode and timing. Specifically we consider the effects of (i) in-vessel pressure, (ii) melt properties. Control rod guide tube (CRGT) cooling and cooling of the debris from the top are considered as severe accident management (SAM) measures in this study. We also consider the question about minimal amount of debris that can be retained inside the reactor pressure vessel (RPV). Analysis is carried out with couple

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Holm, Sven. "Optical imaging of retinal blood flow : studies in automatic vessel extraction, alignment, and driven changes in vessel oximetry." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/optical-imaging-of-retinal-blood-flow-studies-in-automatic-vessel-extraction-alignment-and-driven-changes-in-vessel-oximetry(f39850b2-8f9c-4d7a-b8fa-370e313e2cc4).html.

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Recent advances in retinal imaging have made it possible to take measurements of retinal oxygen saturation noninvasively in humans. This allows studying the supply of oxygen in healthy and diseased retinae, thereby advancing our understanding of both the normal functioning of the retina and of retinal pathologies. However, retinal oximetry is still a research tool only and requires further improvement before being used in a clinical setting. Here, a single-wavelength flickering light was used to increase retinal blood flow in healthy subjects. This increase is revealed by both vasodilation and

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Bucciarelli, Elia. "Liquid-liquid dispersion in mechanically agitated vessel." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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L’argomento trattato è lo studio di due liquidi immiscibili all’interno di un recipiente agitato. Una nuova tecnica di misura delle dimensioni delle particelle viene presentata, la tecnica sperimentata è non invasiva in quanto tutti gli strumenti di misura sono stati posizionati esternamente al vessel. Il recipiente conteneva una dispersione di olio siliconico in acqua, i test sono stati condotti in assenza di coalescenza. Il sistema è agitato in un primo test da una girante Rushton e in un secondo da una girante con denti; esso consiste in un recipiente cilindrico dal diametro T=300mm in v

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Bonnín, Pascual Francisco. "Contributions to Robot-based Vessel Visual Inspection." Doctoral thesis, Universitat de les Illes Balears, 2017. http://hdl.handle.net/10803/543844.

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[cat]El transport marítim és una de les maneres més efectives de transportar béns d’un lloc a l’altre del món. Encara que avui dia es realitzen grans esforços per tal d’evitar els accidents marítims, aquests encara ocorren i, de tant en tant, tenen conseqüències catastròfiques en termes ambientals, humans i/o econòmics. Els problemes estructurals causats per esquerdes i/o corrosió són la causa principal d’aquests accidents i, per això, els vaixells són sotmesos a ins-peccions periòdiques amb l’objectiu de garantir la seva integritat estructural. Per dur a terme una inspecció, els vaixell

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