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Dissertations / Theses on the topic 'Head of bed'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Mattar, Louis. "The Effects of 60 Days of Head Down Bed Rest on Vascular Health." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2801.

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This study was designed to test the hypothesis that 60 days continuous head down bed rest (HDBR), an Earth-based analogue of the effects of space flight, would elevate factors that increase vasoconstriction and would increase markers of vascular inflammation. The study incorporated countermeasures consisting of treadmill running within lower-body negative pressure and resistive "flywheel" exercise (exercise countermeasure, EX) or an increased protein intake of 0. 6 g/kg body weight/day (dietary countermeasures, DIET) to determine whether these interventions might prevent the vasoconstricto

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2

Blissitt, Patricia A. "The effect of head of bed elevation on cerebrovascular dynamics in mild or moderate cerebral vasospasm following aneurysmal subarachnoid hemorrhage /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/7309.

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3

Johnson, Randall. "Evaluation of an Education Intervention for the Staff on the Head of the Bed Elevation in the Pediatric Intensive Care Unit." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3036.

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Elevating the head of bed (HOB) reduces risks for aspiration and ventilator associated pneumonia (VAP) in the adult population. Educational interventions have resulted in improvements in achieving a target HOB elevation of 30[degrees] in adults. Limited research has addressed this intervention in the pediatric intensive care unit (PICU). The aim of this study was to determine if an educational intervention for the PICU staff would result in improvement in the HOB elevation in the PICU. Four research questions were studied: 1) What is the common practice related to the elevation of the HOB in t

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4

Watts, Jennifer M. "A comparative analysis of the effect of critical care nursing interventions on acute outcomes in patients with traumatic brain injury." Honors in the Major Thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1521.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Nursing<br>Nursing

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5

Tucker, Brandon Raye. "Reducing the incidence of ventilator-associated pneumonia with selected positional strategies." Honors in the Major Thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1512.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Nursing<br>Nursing

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6

Liphardt, Anna-Maria [Verfasser]. "The potential of whole body vibration training during 14-days of 6°-head down tilt bed rest to counteract effects on muscle perfomance, balance and articular cartilage / Anna-Maria Liphardt." Köln : Deutsche Sporthochschule Köln, 2008. http://d-nb.info/107057189X/34.

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7

Greaves, Danielle Kathleen. "Désadaptations cardiovasculaires à la microgravité : techniques avancées pour améliorer la mesure et l'évaluation du risque cardiovaculaire induit par les vols spatiaux pour les équipages de longue durée Effects of exercise countermeasure on myocardial contractility measured by 4D speckle tracking during a 21-day head-down bed rest Cardiac and arterial structure and functional changes after four days of dry immersion with and without thigh cuffs Effect of thigh cuff on venous flow redistribution during 4 days in dry immersion." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC433.

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L'objectif était de quantifier les modifications de la contractilité cardiaque au cours d’un bedrest de 21 jours (HDBR) par la methode speckle tracking 4D et de déterminer si la contre-mesure « exercice » était capable de préserver cette contractilité cardiaque. Les méthodes traditionnelles 2D ne mesurent qu'une variation de la taille du ventricule de la systole à la diastole et ne suivent pas la cinetique des mouvements de contractilité à l’interieur de la paroi. De plus l’echographie 2D ne permet d’acceder qu’a la contractilite longitudinale globale par la mesure de la distance Apex-Valve mi

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8

Thomas, Benku. "Shallow vibrated particulate beds - bed dynamics and heat transfer." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/56157.

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Particulate beds which are mobilized and expanded by the application of mechanical vibrations are called vibrated beds. These beds are generally defined as shallow, if the depth-to-width ratio is less than unity. The dynamics of shallow vibrated beds and the heat transfer from immersed tubes to such beds are investigated using a vibrational frequency of 25 Hz. The vibration equipment is designed to minimize distortions in the applied displacement waveform. Transducers used are of a sufficiently high frequency response to accurately follow the variation of bed properties over a vibrational cy

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9

Leising, Guillaume M. "Radial heat transfer studies in low tube to particle diameter ratio fixed bed reactors." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-050205-154724/.

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10

Mason, Mark Olin. "Bed dynamics and heat transfer in shallow vibrated particulate beds." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07132007-143143/.

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11

Ibupoto, Khalil Ahmed. "Heat and moisture transfer during grain cooling." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246684.

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12

Wu, Richard Lap. "Heat transfer in circulating fluidized beds." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/31037.

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Heat transfer in circulating fluidized beds was studied in both a 7.3 m high, 152 x 152 mm square, pilot-scale combustor and a 9.3 m high, 152 mm ID transparent cold model unit. Results were obtained for particles of mean size 171-299 µm at superficial gas velocities from 4 to 9.5 m/s and for solids circulation rates up to 70 kg/m².s. For the combustor, results obtained by using membrane walls and a vertical tube as heat transfer surfaces show a strong influence of the cross-sectional area-averaged suspension density on time-averaged, length-averaged suspension-to-surface heat transfer coeffic

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13

Linjewile, Temi Makecha. "Temperature of burning carbonaceous particles in a fluidized-bed combustor /." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phl756.pdf.

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14

Rubenstein, Samuel. "Cold Flow Heat Transfer of Group D Particles in a Fluidized Bed." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1592717365378709.

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15

Al-Meshragi, Mohamed. "An investigation of radial heat transfer in packed beds." Thesis, University of Salford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253077.

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16

Aghajani, Massoud. "Studies of bed voidage and heat transfer in solid-liquid fluidized bed heat exchangers." Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/843681/.

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In recent years, there has been a considerable interest in the application of solid-liquid fluidized bed heat exchangers in various process industries. The importance of these heat exchangers arises from their ability to remove large quantities of heat per unit time and area from a hot surface. The value of the heat transfer coefficient in solid-liquid fluidized beds can be up to 8 times higher than for single phase forced convection, due to the increase in turbulence level. In addition, in cases where severe fouling is expected, any deposits that may form on the heat transfer surfaces are imm

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17

Nijemeisland, Michiel. "Verification Studies of Computational Fluid Dynamics in Fixed Bed Heat Transfer." Digital WPI, 2000. https://digitalcommons.wpi.edu/etd-theses/318.

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Computational Fluid Dynamics (CFD) is one of the fields that has strongly developed since the recent development of faster computers and numerical modeling. CFD is also finding its way into chemical engineering on several levels. We have used CFD for detailed modeling of heat and mass transfer in a packed bed. One of the major questions in CFD modeling is whether the computer model describes reality well enough to consider it a reasonable alternative to data collection. For this assumption a validation of CFD data against experimental data is desired. We have developed a low tube to particle,

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18

Demir, Vedat. "Development and application of vacuum heat-treated silicon nitride ceramics." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310039.

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19

Abou-Ziyan, H. Z. Z. "Heat and momentum transfer in porous material used for thermal energy storage." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233826.

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20

Onaiyekan, John. "What We Saw And Heard At The African Synod." Bulletin of Ecumenical Theology, 1994. http://digital.library.duq.edu/u?/bet,488.

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21

Brooks, Paul David Edwards. "The design of moving packed bed high temperature heat exchangers." Thesis, University of the West of England, Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321834.

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22

Brown, Steven Lewis. "Hydrodynamics and Transient Heat Transfer Characteristics in Fluidized and Spouted Beds." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/33806.

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Hydrodynamics and heat transfer characteristics found in fluidization were studied in a small scale laboratory fluidized bed. Experiments were designed to capture field data on multiple slit jet gas distributor systems for the validation of computational models. Localized data was quantified through the use of several novel non-intrusive experimental measurement techniques. The analyses provide a unique study that connects full field-of-view multiphase flow dynamics with transient heat transfer distributions. The gas-solid hydrodynamics were captured through three non-invasive measurement tech

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23

Nguyen, Khac Hoang. "Sezónní akumulátor tepla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417854.

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The aim of the thesis to explain the functionality of seasonal accumulation with an in-depth view on rock bed accumulator. The computational model is based on the project located in Attenkirchen, Germany. After the technical analysis of the model is carried out an economical review can be realized. To conclude the thesis an evaluation is made comparing an accumulation system with a more traditional one.

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24

Hossain, Abu Norman. "Combustion of solid fuel in a fluidized bed combustor." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1176492911.

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25

Courbariaux, Yann. "Heat transfer in a circulating fluidized bed." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ46243.pdf.

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26

Grant, Angela. "The view from the fountain head : the rise and fall of John Gwenogvryn Evans." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:1c490921-9480-4cc6-bed2-f3e1948a4817.

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John Gwenogvryn Evans was an important figure in late nineteenth and early twentieth century Welsh Celtic Studies, because he published accurate diplomatic editions of medieval manuscripts that are still used today. He also compiled an important and detailed Report on Welsh Manuscripts for the Historic Manuscripts Commission that was of significant utility to scholars of his day, and still has uses for its detailed description of manuscripts. His extraordinary talent for accuracy in the reproduction of medieval script came to the attention of John Rhŷs, then Professor of Celtic at Jesus Colle

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27

Nijemeisland, Michiel. "Influences of catalyst particle geometry on fixed bed reactor near-wall heat transfer using CFD." Digital WPI, 2003. https://digitalcommons.wpi.edu/etd-dissertations/445.

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Fixed bed reactors are an essential part of the chemical industry as they are used in a wide variety of chemical processes. To better model these systems a more fundamental understanding of the processes taking place in a fixed bed is required. Fixed bed models are traditionally based on high tube-to particle diameter ratio (N) beds, where temperature and flow profile gradients are mild and can be averaged. Low-N beds are used in extremely exo- and endothermic processes on the tube side of tube and shell type reactors. In these beds, heat transfer is one of the most important aspects. The impo

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28

Behnam, Mohsen. "CFD simulation and experiment of catalyst deactivation and heat transfer in a low N fixed-bed reactor." Digital WPI, 2012. https://digitalcommons.wpi.edu/etd-dissertations/20.

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Modeling of fluid flow, heat transfer and reaction in fixed beds is an essential part of their design. This is especially critical for highly endothermic reactions in low tube-to-particle diameter ratio (N) tubes, such as methane steam reforming (MSR) and alkane dehydrogenation as two important commercial reactions. The modeling of fixed bed reaction is available in literatures with lots of assumptions. However, there is a need for implementing the reaction conditions with diffusion aspects on a real fixed bed reactor without assuming any pseudo conditions. Computational fluid dynamics (CFD) h

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29

Li, Fang. "Heat Transfer in a High-pressure Gas-solid Fluidized Bed with Horizontal Tube Bundle and Continuous Addition of Fines." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/38002.

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Climate change is becoming more severe than ever in human history and the emission of green house gas urgently needs to be reduced while global energy consumption remains booming. Large-scale application of clean fossil fuel combustion shall be considered as a priority for its economical advantages as well as reliability in meeting global energy needs. Oxygen-fired pressurized fluidized bed combustor technology with downstream carbon capture and sequestration is considered a key approach to clean coal combustion. In such technology, the fluidized bed combustor operates at elevated pressures an

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30

Simonsen, Bjørn. "Heat Exchange in a Fluidized Bed Calcination Reactor." Thesis, Norges Teknisk-Naturvitenskaplige Universitet, Institutt for energi- og prosessteknikk, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9794.

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<p>Sorption Enhanced Steam Methane Reforming (SE-SMR) is a novel way of reforming natural gas to high purity hydrogen gas with in-situ CO2 capture by the introduction of a CO2 sorbent. The process is carried out in two steps. In the first step, hydrogen is produced and CO2 is absorbed by the sorbent. In the second step, the sorbent is exposed to high temperature heat and the CO2 is released. For the reforming to run continuously, two bubbling fluidized beds(BFB), can be coupled, one working as a reformer and the other one as a regenerator of the CO2 sorbent. The reformer works at a temperature

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31

Nguyen, Clayton Ma. "Heat transfer coefficients of particulate in tubular heat exchangers." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53960.

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This experimental study explores the heat transfer from heated bare and finned tubular surfaces to particulates in packed bed cross flow. The results from this experiment will be used to help select the type of particulates that will be used. Additionally, these results will assist in estimating heat transfer in prototype and commercial particle to fluid heat exchangers (PFHX). This research is part of larger effort in the use of particulates in concentrating solar power technology. These solid particles are heated by concentrated sunlight to very high temperatures at which they are a suitable

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32

Nigeria, The Catholic Bishops of. "Plenary Meeting of the Catholic Bishops' Conference of Nigeria Held at Enugu on September 12-16, 1994: Communique." Bulletin of Ecumenical Theology, 1994. http://digital.library.duq.edu/u?/bet,1799.

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33

Chaplains, All Nigerian Congress of Catholic Prison. "First All Nigerian Congress of Catholic Prison Chaplains Held in DRACC Emene, Enugu 27th- 30th November 1994: Communique." Bulletin of Ecumenical Theology, 1995. http://digital.library.duq.edu/u?/bet,1913.

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34

Bull, Douglas Rutherford. "Performance Improvements to a Fast Internally Circulating Fluidised Bed (FICFB) Biomass Gasifier for Combined Heat and Power Plants." Thesis, University of Canterbury. Chemical and Process Engineering, 2008. http://hdl.handle.net/10092/1952.

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This thesis describes the development and experimental testing of a 100 kW dual fluidized bed biomass gasifier (also called a Fast Internally Circulating Fluidized Bed (FICFB) biomass gasifier). This steam-blown gasifier is being studied for its suitability within combined heat and power plant systems for the New Zealand forest products industry. This advanced design of gasifier has the ability to generate producer gas with a lower heating value (LHV) of 11.5-13.4 MJ/Nm3, which is two to three times higher than yielded by conventional gasification systems. This is accomplished because the gasi

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35

Sajjakulnukit, Boonrod. "Hydrodynamics and heat transfer in a circulating fluidized bed." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0018/NQ46298.pdf.

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36

Bashir, Arif. "Hydrodynamics and heat transfer characteristics of a raining bed." Thesis, University of Leeds, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293836.

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37

El-Sherif, K. M. "Axial heat transfer in a packed bed heat exchangers using fluid near its critical point." Thesis, University of Sussex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374464.

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38

Zonato, Andrea. "Evaluating the urban heat island for cities of Emilia-Romagna region through numerical simulations." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10913/.

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Lo scopo di questo studio è la comprensione della dinamica dello strato limite urbano per città dell’Emilia Romagna tramite simulazioni numeriche. In particolare, l’attenzione è posta sull’ effetto isola di calore, ovvero sulla differenza di temperatura dell’aria in prossimità del suolo fra zone rurali e urbane dovuta all’urbanizzazione. Le simulazioni sono state effettuate con il modello alla mesoscala "Weather Research and Forecasting" (WRF), accoppiato con le parametrizzazioni urbane "Building Effect Parametrization" (BEP) e "Building Energy Model" (BEM), che agiscono a vari livelli

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39

Fenner, Markus. "Heat and mass transfer from endogenous combustion processes in packed beds." Thesis, Sheffield Hallam University, 2002. http://shura.shu.ac.uk/19644/.

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Since fires can develop from endogenous smouldering combustion processes deep inside packed beds, especially domestic refuse beds, it is a major task in early fire detection to detect the indications of such combustions as early as possible. Since it is believed that the surface temperature distribution of the bed is affected by the heat and mass transfer from a source of endogenous combustion deep within the bed, the measurement of the surface temperature using IR-Thermography (IRT) has been supposed to be the most promising technique in early combustion detection. The present work thus deals

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40

Visser, Coert Johannes. "Modelling heat and mass flow through packed pebble beds a heterogeneous volume-averaged approach /." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-08292008-125630/.

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41

Sharpe, Roger. "A PREDICTION OF THE ACOUSTICAL OUTPUT OF A GOLF DRIVER HEAD USING FINITE ELEMENTS." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/272.

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A simulation was created using LS-DYNA® to determine the acoustical properties of a golf ball and golf driver head impact. LS-DYNA® has a coupled finite element analysis (FEA) and boundary element method (BEM) solver that uses the integral form of Helmholtz’s acoustic wave equation to deliver predicted sound pressure levels at predetermined acoustic points. Validation of the modeling was done on a simple plate donated by Titleist Golf. The plate was modeled and meshed using TrueGrid and impacted by a three layer golf ball model derived from “Tanka’s” paper on multilayered golf balls. The final

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42

Evans, Patricia. "Hydrodynamics and heat transfer in a gas-fluidised bed bioreactor." Thesis, University of Surrey, 1992. http://epubs.surrey.ac.uk/2141/.

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43

Anzalone, Thomas M. "Heat transfer characteristics of a fluidized bed : stirling engine system." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291128389.

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44

Jia, Dening. "Heat and mass transfer in pulsed fluidized bed of biomass." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/61087.

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Biomass is a promising energy source that has been considered in a variety of thermal conversion processes where fluidized beds with their exceptional heat and mass transfer rates, are often considered as potential candidates. However, the fluidization of biomass is held back by its cohesive nature. This work has demonstrated that pulsed gas flow in fluidized bed is highly effective in overcoming channeling, partial and complete defluidization, without the need for inert bed particles. Both heat transfer and mass transfer were investigated in a pulsed fluidized bed with 0.15 m by 0.10 m recta

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45

Moraes, Raykleison Igor dos Reis. "Estudo numérico e experimental do armazenamento de energia por calor latente em um leito fixo." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263317.

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Orientador: Kamal Abdel Radi Ismail<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-20T09:32:00Z (GMT). No. of bitstreams: 1 Moraes_RaykleisonIgordosReis_D.pdf: 4245831 bytes, checksum: 07427cc907cc6cf8690c510c3dd14a1c (MD5) Previous issue date: 2012<br>Resumo: O presente trabalho consiste na investigação numérica e experimental do carregamento de um leito fixo com material de mudança de fase no interior das cápsulas esféricas. O modelo matemático é baseado na equação da energia e a solução obtida com a técnica

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46

Tackett, Joshua Lucas. "A master’s vocal recital analyzing the historical and stylistic aspects of works by George Frideric Handel, Wolfgang Amadeus Mozart, Franz Schubert, Vincenzo Bellini, Giuseppe Verdi, Gaetano Donizetti, Reynaldo Hahn, and Michael Head." Kansas State University, 2014. http://hdl.handle.net/2097/18335.

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Master of Music<br>Department of Music, Theatre, and Dance<br>Reginald L. Pittman<br>The songs presented in this report are works I performed in my Master’s Recital on March 30, 2014. This report will take an in-depth analysis at the selected composers’ life and styles of writing and the works they created. The scores studied in this report include: “Thus saith the Lord: But who may abide” from George Frideric Handel’s Messiah, “Soave sia il vento” from Wolfgang Amadeus Mozart’s Cosí fan Tutte, “Liebesbotschaft,” “Ihr Bild,” and “Das Fischermädchen” from Franz Schubert’s Schwanengesang, Vincen

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47

Faucher, Florent Patrice. "A Numerical Model of a Microwave Heated Fluidized Bed." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36217.

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This proposes a model for a microwave heated fluidized bed by ceramic pellets to highlight the possibility to obtain a temperature gradient between the gas and the pellets. After a review of the recent work on microwave effects on chemical reactions, a short description of fluidization is given for a better understanding of the phenomena, followed by a development of a model of the heat transfer processes taking place in the fluidized bed. A parameter study describes the trends that should be expected despite the numerous restrictions and assumptions. Also, a set of parameters is proposed f

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48

Abualkaz, Ali Hameed Ali. "The utilization of fluidized beds for heat pipe heat recovery." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235654.

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49

Morgan, Ashley T. "Comparison of CFD Simulation and Experimental Data for Heating and Cooling Low N Packed Beds of Spherical Particles." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-theses/1312.

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This study compared experimental and Computational Fluid Dynamics (CFD) results for heating and cooling in a packed bed (N=5.33). The experimental data was compared between heating and cooling, and was also used to validate the CFD model. The validated models were used to compare theoretical heat transfer parameters. For the experiments, it was found that the effective thermal conductivity was comparable for heating and cooling, and the wall Nusselt number for heating was higher. For the CFD results, it was found that both the wall Nusselt number and effective thermal conductivity were compara

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50

McQueen, Mark. "Heat recovery from molten blast furnace slag in a fluidized bed." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ55918.pdf.

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