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Dissertations / Theses on the topic 'Gas-particles'

Author: Grafiati

Published: 16 November 2024

Last updated: 31 July 2025

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1

Omota, Florin. "Adhesion of catalyst particles to gas bubbles." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2005. http://dare.uva.nl/document/77898.

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2

Zhao, Fan. "Modelling of gas-solid flows with non-spherical particles." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/34398.

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Dispersed multiphase flows are common in nature and industry and are governed by complex physical phenomena. The complex features of the turbulence continuity carrier phase and the dispersed phase make the problem of a dispersed multiphase flow much more complex than a single phase flow. This research work focuses on modelling and analysing one type of dispersed multiphase flows: solid particles suspended in a turbulent channel flow. The aim of this thesis is to numerically investigate the effects of Stokes number, particle shape and particle volume fraction on the behaviour of gas-solid turbu

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3

Rees, Andrew Christopher. "The behaviour of buoyant particles in gas-fluidised beds." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613955.

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4

Cowan, John D. "A billiard model for a gas of particles with rotation /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2004.

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Thesis (Ph.D.)--Tufts University, 2004.<br>Adviser: Boris Hasselblatt. Submitted to the Dept. of Mathematics. Includes bibliographical references (leaves 61-62). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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5

Hardy, Matthew Philips. "Numerical investigation of gas-powered delivery of micro particles to tissue." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289337.

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6

Soliman, Salah M. "Micro-Particles and Gas Dynamics in an Axi-Symmetric Supersonic Nozzle." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1313772443.

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7

Kim, Donghee. "Nucleation and coagulation of particulate matter inside a turbulent exhaust plume of a diesel vehicle." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2305.

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Thesis (Ph. D.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains xv, 198 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 165-177).

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8

Zhang, Ning. "Motion and distribution of micro-sized solid particles in turbulent gas flow /." Search for this dissertation online, 2005. http://wwwlib.umi.com/cr/ksu/main.

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9

Kassaee, Mohamad Hadi. "Internal surface modification of zeolite MFI particles and membranes for gas separation." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44906.

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Zeolites are a well-known class of crystalline oxide materials with tunable compositions and nanoporous structures, and have been used extensively in catalysis, adsorption, and ion exchange. The zeolite MFI is one of the well-studied zeolites because it has a pore size and structure suitable for separation or chemical conversion of many industrially important molecules. Modification of zeolite structures with organic groups offers a potential new way to change their properties of zeolites, beyond the manipulation of the zeolite framework structure and composition. The main goals of this thesis

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10

Gallen, Lucien. "Prediction of soot particles in Gas Turbine Combustors using Large Eddy Simulation." Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0058.

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Les futures réglementations en termes d'émission de polluants, notamment sur les particules fines (PM), qui s'appliquent aux chambres de combustion de nouvelle génération nécessitent de nouvelles approches de conception. Afin de réduire la formation des particules de suies, la compréhension des processus de formation et de transports des particules est nécessaire. La chimie et la dynamique de ces particules de suies dépendent fortement de la taille et de la morphologie de celle-ci, leur prédiction requière donc calculer la distribution en taille des particules. Pour cela, des méthodes Eulérien

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11

Bavarian, Farshad. "Hydrodynamics of gas-liquid fluidization in annular fluidized bed and fluidization of cylindrical particles under high gas holdup conditions /." Connect to resource, 1987. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1157058483.

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12

Tortorelli, Joseph Patrick. "The effect of external gas/slurry contact on the flotation of fine particles." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28874.pdf.

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13

Gilbert, Marcus. "Investigation into the use of a tapered element oscillating microbalance for real-time particulate measurement." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2549.

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Thesis (M.S.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains xii, 74 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 61-62).

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14

Croft, Shiona Andrea. "The analysis of unfired propellant particles by gas chromatography - mass spectrometry : a forensic approach." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/17251/1/Shiona_Croft_Thesis.pdf.

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In Australia, the 0.22 calibre ammunition is the most encountered ammunition type found at a crime scene [1]. Previous analysis of gun shot residue (GSR) and unfired propellant has involved studying the inorganic constituents by Scanning Electron Microscopy or similar technique. However, due to the heavy metal build up that comes with some ammunition types, manufacturing companies are now making propellant that is safer to use. Therefore, it has become appropriate to study and analyse unfired propellant by other means. One such technique is unfired propellant analysis by gas chromatography – m

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15

Croft, Shiona Andrea. "The analysis of unfired propellant particles by gas chromatography - mass spectrometry : a forensic approach." Queensland University of Technology, 2008. http://eprints.qut.edu.au/17251/.

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In Australia, the 0.22 calibre ammunition is the most encountered ammunition type found at a crime scene [1]. Previous analysis of gun shot residue (GSR) and unfired propellant has involved studying the inorganic constituents by Scanning Electron Microscopy or similar technique. However, due to the heavy metal build up that comes with some ammunition types, manufacturing companies are now making propellant that is safer to use. Therefore, it has become appropriate to study and analyse unfired propellant by other means. One such technique is unfired propellant analysis by gas chromatography – m

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16

Qin, Tong. "Numerical Simulations of Interactions of Solid Particles and Deformable Gas Bubbles in Viscous Liquids." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19225.

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Studying the interactions of solid particles and deformable gas<br />bubbles in viscous liquids is very important in many applications,<br />especially in mining and chemical industries. These interactions<br />involve liquid-solid-air multiphase flows and an<br />arbitrary-Lagrangian-Eulerican (ALE) approach is used for the direct<br />numerical simulations. In the system of rigid particles and<br />deformable gas bubbles suspended in viscous liquids, the<br />Navier-Stokes equations coupled with the equations of motion of the<br />particles and deformable bubbles are solved in a finite-eleme

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17

Jarrett, Ronald P. "Evaluation of opacity, particulate matter, and carbon monoxide from heavy-duty diesel transient chassis tests." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1599.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains xvi, 129 p. : ill. Includes abstract. Includes bibliographical references (p. 78-82).

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18

Dewsbury, Kevin H. "Hydrodynamic study of free rise of solid particles and gas bubbles in non-Newtonian fluids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0017/MQ58025.pdf.

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19

Mort, P. E. "The deposition of sub-micrometer particles from hot turbulent gas to a cold rough surface." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385217.

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20

Ahmed, Shafkat. "Interactions of Gas Particles with Graphene during Compressible Flow Exfoliation: A Molecular Dynamics Simulations Study." University of Toledo / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1588278674983556.

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21

Rodriguez, Alexander. "The removal of an airborne low-volatility heavy metal from exhaust gases through condensation onto sorbent particles." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3035970.

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22

Albertsson, Galina. "Effect of the presence of a dispersed phase (solid particles, gas bubbles) on the viscosity of slag." Thesis, KTH, Mikro-modellering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133495.

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The viscosities of a set of silicone oils containing different size ranges of charcoal or paraffin particles as well as the viscosities of silicone oil foams were measured at room temperature in order to determine the effect of dispersed phase on the viscosity of a liquid and its effect on foaming ability. The effective viscosity of the samples increased with volume fraction of the second phase. The foaming ability was improved by the presence of the particles. The improved foaming effect was for the most part not a result of the increased viscosity. No connection between the particle size and

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23

Anderson, Emmet Raymond. "A spectrographic study of the absorption and scattering of light by small particles in the gas phase." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/187030.

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A new technique for studying small particles optically in the laboratory is described. A modern spectrograph using an image intensifier tube coupled to a CCD as a detector provides sensitivity comparable to that of a spectrometer using a photomultiplier tube, while preserving the advantages of a spectrograph. Using the instrument, small particles of sodium were studied in light scattering in the gas phase, and gas phase extinction measurements were made of magnesium, carbon, and C₆₀ (Buckminsterfullerene). In the scattering spectra of sodium, the ability of a spectrograph to image along the sl

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24

Isenor, Merrill. "Characterization of aerosol particles at low temperatures in a bath gas cooling cell and Bessel beam optical trap." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52299.

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This thesis focuses on low temperature studies of ensembles of aerosol particles formed in a bath gas cooling cell (78 K) and of single aerosol particles trapped in a counter-propagating Bessel beam optical trap (228-260 K). Ensemble particle measurements provide average data for all particles within the ensemble. These measurements are directly applicable to the study of clouds and aerosols in the atmospheres of a variety of planets and moons. Conversely, single particle measurements offer insight into behaviours which may be dependent on a particular particle property, such as particle si

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25

Xu, Mingyuan Xu. "Study of Gas-Solid Slugging Fluidized Bed with Geldart D Particles Using High-Temperature Electrical Capacitance Volume Tomography." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500623814771833.

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26

Hitchins, Jane. "Dispersion of particles from vehicle emissions." Thesis, Queensland University of Technology, 2001.

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27

Johnson, Lynne Alison. "Modelling particle emissions from traffic flows." Thesis, Queensland University of Technology, 2000.

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28

Tang, Wen-Tzung. "Hydrodynamics, mixing, gas-liquid mass transfer, and biological applications of a three phase fluidized bed of low density particles /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487597424139205.

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29

Subhono, Boya. "Deploying nanotechnology for oil and gas flow assurance : understanding the transport and penetration of nano-particles in porous media." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/9284/.

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Scaling problem is one of the common engineering challenges in ‘flow assurance’ in the oil and gas industry. Since mechanical or chemical treatment frequently requires sacrifice in fluid production, it is often preferable to avoid this problem, for example by conducting a scale squeeze treatment. This treatment includes an injection of scale inhibitor to hinder scale formation in the rock. Its effectiveness corresponds to its attachment lifetime in the rock formation. This is where nanotechnology has an important role for its capability to enhance the attachment of the scale inhibitor on the r

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30

Li, Wanguang. "Experimental study of the thermophoretic force and evaporation rates for single microparticles in the Knudsen regime /." Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/9929.

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31

De, Vos Wouter Phillip. "The effect of particle shape on solid entrainment in gas-solid fluidisation." Diss., Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-08282008-144243/.

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32

SABIA, CARMINE. "Numerical Investigation of Particles Breakage and Growth in Gas-Solid Processes: Spiral Jet Milling and Polyolefin Polymerization in Fluidized Bed Reactors." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2971518.

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33

Betioli, Mario Luis Penteado. "Estudo experimental da distribuição de pressão estatica no escoamento gas-solido em um leito recirculante." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267005.

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Orientadores: Marco Aurelio Cremasco, Alexandre de Paula Peres<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-08T18:40:27Z (GMT). No. of bitstreams: 1 Betioli_MarioLuisPenteado_M.pdf: 23779149 bytes, checksum: 6c1ff800d2c4c61f6e72eab4a95e69f2 (MD5) Previous issue date: 2007<br>Resumo: Este trabalho tem por objetivo apresentar a distribuição axial de pressão estática ao longo de um leito fíuidízado circulante (CFB) para diversos valores de velocidade de gás e fluxo mássico de sólidos; para tanto, avaliou-se

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34

Lim, McKenzie C. H. "Chemical and physical characterization of aerosols from the exhaust emissions of motor vehicles." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16428/1/McKenzie_Lim_Thesis.pdf.

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The number concentration and size distribution of particles in Brisbane have been studied extensively by the researchers at The International Laboratory for Air Quality and Health, Queensland University of Technology (Morawska et al., 1998, 1999a, 1999b). However, the comprehensive studies of chemical compositions of atmospheric particles, especially with regard to the two main classes of pollutants (polycyclic aromatic hydrocarbons and trace elements), that are usually of environmental and health interest, have not been fully undertaken. Therefore, this thesis presents detailed information on

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35

Lim, McKenzie C. H. "Chemical and physical characterization of aerosols from the exhaust emissions of motor vehicles." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16428/.

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The number concentration and size distribution of particles in Brisbane have been studied extensively by the researchers at The International Laboratory for Air Quality and Health, Queensland University of Technology (Morawska et al., 1998, 1999a, 1999b). However, the comprehensive studies of chemical compositions of atmospheric particles, especially with regard to the two main classes of pollutants (polycyclic aromatic hydrocarbons and trace elements), that are usually of environmental and health interest, have not been fully undertaken. Therefore, this thesis presents detailed information on

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36

Jiang, Chengliang. "Germania-based Sol-gel Coatings and Core-shell Particles in Chromatographic Separations." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7683.

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Chapter one reviewed the development of sol-gel stationary phase for gas chromatograph (GC). Inorganic sol-gel precursor creates the substrate support for stationary phase bind to silica surface through the condensation of silanol groups, the rough surface with enhanced surface area enlarger the capacity of the sol-gel stationary phase, the porosity of sol-gel structure decreases the mass transferring coefficient, the term C in Van Deemter equation, which makes sol-gel stationary phase thicker coating up to 1 um but keeps the high resolution for gas chromatography. Chemical bound stationary ph

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37

Alois, Stefano [Verfasser], Jörn [Akademischer Betreuer] Sesterhenn, Jörn [Gutachter] Sesterhenn, and Manfred [Gutachter] Lane. "Contact electrification in aerosolized micron-sized solid particles: dependence upon size, chemical composition and gas properties / Stefano Alois ; Gutachter: Jörn Sesterhenn, Manfred Lane ; Betreuer: Jörn Sesterhenn." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1176623559/34.

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38

Brunton, Rosalind Elizabeth. "Strong correlation effects in heavy fermion and double exchange systems." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300345.

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39

Rapisarda, Andrea. "Hydrodynamic characterization of two/three phase flow regimes in stirred tank." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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Questo progetto di ricerca riguarda i processi di miscelazione in sistemi multifase meccanicamente agitati(regime turbolento). I sistemi studiati sono: gas-liquido, solido-liquido e gas-solido-liquido. Lo scopo è quello di analizzare il movimento delle particelle solide all'interno di un recipiente agitato, calcolandone la velocità(n) alle quali si è ottenuto lo stato di estrazione delle particelle(nJD), della completa dispersione(nCD) e del loading(nloading), attraverso l'uso di due diversi valori di diametro delle particelle. Le misure sono state effettuate utilizzando due giranti su un alb

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40

Lančarič, Vít. "Odlučování drobných prachových částic při spalování uhlí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231278.

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Thesis are focus for detailed description of fine solid particulates which are product from flue gas. Introduction type of Technologies for capture fine solid particulates. Calculation of electrostatic separator for specific coal and wood boiler.

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41

Chobot, Ivan. "Drobné prachové částice v plynných produktech spalování." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230414.

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Goal of this dissertation is introduce the problem of small dust particles present in the gaseous products of combustion. Further I´m looking technologies cyclone and an electrostatic filter to capture small particles and comparing the effectiveness of separability. Dissertation is concluded by designed cyclone and an electrostatic filter.

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42

Boglaienko, Daria. "Capture and Densification of Floating Hydrophobic Liquids by Natural Granular Materials." FIU Digital Commons, 2017. http://digitalcommons.fiu.edu/etd/3261.

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Densification and submergence of floating crude oil is proposed as a novel oil spills treatment method. Surface application of dry granular materials (e.g., quartz sand, limestone) on top of a floating oil layer increases the density of the floating oil phase/granule mixture and leads to formation of relatively large and stable aggregates with significant amounts of captured oil. The aggregates separate from the floating hydrophobic phase and settle by gravity. Implementation of this method will reduce the impact radius of a spill and its mobility, preventing direct contamination of beaches, c

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43

Abdelsayed, Victor Maher. "Experimental Studies on Nucleation, Nanoparticle's Formation and Polymerization from the Vapor Phase." VCU Scholars Compass, 2004. http://scholarscompass.vcu.edu/etd/1109.

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This research is divided into three major parts. In part I, the critical supersaturations required for the homogeneous nucleation of 2,2,2-trifluorothanol (TFE) vapor have been measured over a temperature range (266-296 K) using an upward thermal diffusion cloud chamber (DCC). The measured supersaturations are in agreement with the predictions of both the classical and the scaled theory of nucleation. Moreover, the condensation of supersaturated TFE vapor on laser-vaporized magnesium nanoparticles has been studied under different experimental conditions, such as the supersaturation, the pressu

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44

Melchiori, Tommaso. "Study of non catalytic gas-solid reactions: development of a single particle model." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423565.

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This thesis investigates single particle models to describe non catalytic gas-solid reactions. A comparative study was made between the traditional shrinking core model and more detailed continuous models, involving the solution of microscopic balances for the solid and gas phases inside a single porous particle. Such a study proved that in some cases the use of the shrinking core model can lead to severe errors in the prediction of conversion, and that kinetic parameters in SCM are affected by the particle size. Different diffusion models were tested for the continuous model, and the inaccura

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45

Fisher, Dave S. "Two-Photon Polarization Spectroscopy of Atomic Cesium Using Circularly Polarized Light." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1292444234.

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46

Girault, Ivan. "Développements formels et numériques vers la simulation numérique directe avec particules résolues de la combustion d'hydrogène en lit fluidisé." Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSEP083.

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Ce travail de thèse a été réalisé dans le cadre du projet ANR MIMOSAH qui vise à caractériser la combustion d'hydrogène en lit fluidisé, en présence de particules partiellement inertes, avec prise en compte de réactions de surface. L'objectif est de modéliser la combustion en milieu particulaire de la micro à la macro-échelle, avec une double approche numérique et expérimentale. Cette thèse concerne l’approche numérique à l’échelle microscopique, et plus particulièrement le développement d'une stratégie numérique pour la simulation numérique directe de la combustion d’hydrogène en présence de

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47

Pérez, Grau Laura. "The urban health effects and impact of anthropogenic and natural air pollution." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7195.

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The differential role that airborne particulate matter (PM) size fractions, sources, and components play in producing adverse health effects is not fully understood. Specific gaps include the role of PM generated by traffic and the effects of PMs generated by natural sources. Source specific air pollution epidemiological research still lacks integration in the risk assessment process, a fundamental tool to inform policy makers and the public about the current situation or the impact of future or past air pollution policies. This thesis addresses both these gaps. To explore the effects of PM fr

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48

Bass, Stephen Frank. "Optical properties of laboratory-generated polar stratospheric cloud particles." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275366.

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49

Demarthon, Romain. "Modélisation et simulation d’un étage haute température pour la purification d’un gaz chargé en goudrons et en particules carbonées par assistance plasma." Thesis, Pau, 2013. http://www.theses.fr/2013PAUU3001/document.

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Afin de répondre aux besoins croissants en énergie primaire, le groupe Europlasma a développé le procédé CHO-Power permettant de valoriser énergétiquement un mélange de refus de tri d’ordures ménagères et de résidus de biomasse. L’une des particularités de ce procédé est l’utilisation d’un réacteur de dégradation thermique des goudrons et des particules solides fines par assistance plasma. L’objectif de cette étude de mieux appréhender les mécanismes réactionnels mis en jeu lors de l’épuration thermique du gaz. Dans cette optique, un réacteur pilote a été dimensionné puis construit sur la plat

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50

Wu, Xuemei. "Monte-Carlo modeling of turbulent dispersion of small particles in channels." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17389.

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