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Дисертації з теми "Isotherm Study"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Furuhashi, Toyohisa. "STUDY OF PROPANE ADSORPTION ISOTHERM ON PURIFIED HIPCO SINGLE-WALLED CARBON NANOTUBES." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1967978731&sid=2&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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2

Thompson, Natalie A. "Comparative Study of Metal Carbonate Based Adsorbents Recovering Phosphate from Water." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535633479315897.

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3

Lian, Qiyu. "Adsorption of Lead(II) onto Phosphate Modified Ordered Mesoporous Carbon| Kinetics, Isotherm, Mechanism, Thermodynamic and Diffusion-Controlled Study." Thesis, University of Louisiana at Lafayette, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10814555.

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<p>Adsorption of Pb2+ onto ordered mesoporous Carbon (OMC) modified by nitric and phosphoric acid was investigated with variations of the parameters, such as pH, contact time, temperature, and initial concentration. Optimum Pb2+ adsorption was observed at a pH value of 5. Modified OMC was characterized by Nitrogen Adsorption-Desorption Isotherm, FT-IR, SEM, EDS, and TEM. The time required to reach equilibrium was between 20 mins and 30 mins. The equilibrium adsorption capacity of modified OMC (MOMC-NP) increased with the increase of temperature indicating that the process of Pb2+ adsorption i

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4

Telesford, Dana-Marie Leslie-Ann. "Langmuir Trough and Brewster Angle Microscopy Study of Model Lung Surfactant Monolayers at the Air/Aqueous Interface." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1353516892.

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5

Brouard, Christine. "Contribution à l'étude de la rétention de phénylurées (herbicides) par des adsorbants modèles et des sols." Angers, 1995. http://www.theses.fr/1995ANGE0006.

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Notre objectif était d'étudier la rétention d'herbicides de la famille des phenylurées sur des adsorbants minéraux et dans le sol. Les molécules retenues sont le chloroxuron, le chlortoluron, le metobromuron, l'isoproturon et le difenoxuron. Les adsorbants utilises sont la celite, le florisil, l'alumine, le carbonate et le sulfate de calcium. Les sols étudiés sont un sol limoneux-argileux et un sol limoneux-sableux. Nous poursuivons le double but analytique et environnemental d'améliorer les étapes de purification par chromatographie d'adsorption d'extraits en vue de l'analyse de résidus, et d

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6

Tee, Yit-Hong. "DESTRUCTION STUDY OF TOXIC CHLORINATED ORGANICS USING BIMETALLIC NANOPARTICLES AND MEMBRANE REACTOR: SYNTHESIS, CHARACTERIZATION, AND MODELING." Lexington, Ky. : [University of Kentucky Libraries], 2006. http://lib.uky.edu/ETD/ukychen2006t00528/Dissertation.pdf.

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Thesis (Ph. D.)--University of Kentucky, 2006.<br>Title from document title page (viewed on January 24, 2007). Document formatted into pages; contains: xi, 167 p. : ill. Includes abstract and vita. Includes bibliographical references (p. 149-165).

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7

Castada, Hardy Zingalaoa. "Brewster Angle Microscopy Study of Model Lung Surfactant Systems at the Air-Water and Air-Physiological Buffer Interfaces." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281642097.

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8

Bonneau, Olivier. "Étude des effets physico-chimiques des superplastifiants en vue d'optimiser le comportement rhéologique des bétons à ultra-hautes performances." Cachan, Ecole normale supérieure, 1997. http://www.theses.fr/1997DENS0027.

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Les bétons de poudres réactives (BPR) forment une nouvelle génération de BUHP. Les bpr sont composes de poudres fines et sont caractérises par un faible rapport eau/ciment et une forte concentration en superplastifiant. Pour étudier l'interaction (ciment, fumée de silice, adjuvant), nous avons développé une méthode basée sur le découplage des effets de l'eau et de l'adjuvant sur la rhéologie. Dans le cas des bpr, il existe un optimum rhéologique en superplastifiant qui dépend fortement de la formulation. Un modèle de prédiction permet de calculer cet optimum avec seulement 4 paramètres définis

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9

Du, Toit Elizabeth Louisa. "The Rate inhibiting effect of water as a product on reactions catalysed by cation exchange resins formation of mesityl oxide from acetone as a case study /." Diss., Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-02272004-140347.

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10

Darby, Samuel James. "An isothermal titration calorimetry study : complex binding isotherms obtained from the interaction between phytate and tannins with proteins." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13841/.

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In a single Isothermal Titration Calorimetry (ITC) experiment, the Gibbs free energy (∆G), the enthalpy (∆H), entropy (∆S), specific heat capacity (ΔCp) and stoichiometry of binding (n) can be identified. Non-sigmoidal binding isotherms are particularly difficult to interpret, yet these are routinely found in ITC studies. ITC binding studies at 25 °C between tannins and bovine serum albumin (BSA) produced biphasic binding isotherms that were suggested to be indicators of positive cooperative binding. However, reducing the temperature to 10 °C produced monophasic binding isotherms, which raised

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11

Bois, André. "Proprietes dynamiques des monocouches de molecules amphiphiles a l'interface eau-air." Aix-Marseille 1, 1987. http://www.theses.fr/1987AIX11080.

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12

Fournier, Jeannine. "Adsorption des hydrocarbures polycycliques aromatiques sur des solides donneurs d'electrons." Paris 6, 1987. http://www.theses.fr/1987PA066168.

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13

Lee, Lok Yan. "Study of the photodegradation and photostability of anti-cancer drugs in different media towards the development of both new actinometers and liquid formulations." Thesis, De Montfort University, 2016. http://hdl.handle.net/2086/12188.

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This study aims at tackling some of the problems often encountered in photostability testing and liquid formulation development. Three anti-cancer drugs will be employed as models; Dacarbazine (DBZ) has well established photostability issues, Axitinib (AXI) and Sunitinib (SUT) are two new drugs only commercially available in solid dosage forms. In ethanol, the photokinetics of these drugs were well described by the newly proposed Φ-order kinetic mathematical model. This has confirmed the photoreversible character of AXI and SUT’s and unimolecular photoreaction of DBZ’s photodegradations. Also,

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14

Li, Ruijie. "Applications of Stirling engine in sustainable development : context-experimental and numerical study." Thesis, Paris 10, 2017. http://www.theses.fr/2017PA100066/document.

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Dans ce travail, un moteur Stirling de type Gamma alimenté par énergie solaire avec une faible différence de température a été étudié numériquement et expérimentalement. Un nouveau modèle appelé Polytropic Stirling Model with Losses (PSML) a été proposé et appliqué au moteur GPU-3 Stirling. Un cryoréfrigérateur basé sur un moteur Stirling intégral de type Alpha a été étudié numériquement, après avoir mesuré ses dimensions géométriques au laboratoire. Pour le moteur Stirling de type gamma du laboratoire, le modèle ait thermodynamique à vitesse finie et le modèle isotherme a été développé, inclu

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15

Phusunti, Neeranuch. "Pryolytic and kinetic study of Chlorella vulgaris under isothermal and non-isothermal conditions." Thesis, Aston University, 2013. http://publications.aston.ac.uk/19227/.

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Algae are a new potential biomass for energy production but there is limited information on their pyrolysis and kinetics. The main aim of this thesis is to investigate the pyrolytic behaviour and kinetics of Chlorella vulgaris, a green microalga. Under pyrolysis conditions, these microalgae show their comparable capabilities to terrestrial biomass for energy and chemicals production. Also, the evidence from a preliminary pyrolysis by the intermediate pilot-scale reactor supports the applicability of these microalgae in the existing pyrolysis reactor. Thermal decomposition of Chlorella vulgaris

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16

Sahu, Srikrishna. "Experimental study of isothermal and evaporative sprays." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/7076.

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The present research focuses on studying an isothermal spray to understand the mechanism of interaction between droplets and turbulent air flow, and an evaporative spray to evaluate the group evaporation of droplets as opposed to single droplet evaporation. The thesis describes the development and application of two novel experimental techniques for simultaneous characterization of droplet and gaseous phases in isothermal and evaporative sprays respectively. Both approaches use the out-of-focus imaging technique, Interferometric Laser Imaging for Droplet Sizing (ILIDS), for planar measurements

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17

Mofaddel, Nadine. "Contribution à l'étude de systèmes quaternaires : exploitation de sulfates alcalins et dédoublement de molécules chirales par formation de diastéréoisomères." Rouen, 1989. http://www.theses.fr/1989ROUES013.

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Dans le cadre de la détermination des domaines de cristallisation d'espèces définies dans un système d'ordre élevé, deux systèmes quaternaires sont étudiés. Le premier système est Na2So4 - K2SO4 – (NH4)2SO4 – H2O : l'isotherme 18°C est dressé, définissant les domaines de stabilité des différentes phases rencontrées. Le deuxième système est le système réciproque: l'isotherme 20°C montre la possibilité de dédoublement d'un composé racémique. Une étude critique des travaux antérieurs est apportée

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18

Schaaf, Pierre. "La technique de reflectometrie : sa mise en oeuvre et son application a l'etude de l'adsorption de macromolecules a une interface solide/solution." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13039.

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19

Koutmos, P. "An isothermal study of gas turbine combustor flows." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37748.

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20

MENDES, PAULO ROBERTO BUFACCHI. "ISOTHERMAL GASIFICATION STUDY OF A SPHERICAL COAL PARTICLE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1986. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=20347@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>A partir das equações fundamentais da teoria clássica das misturas, é proposto um modelo simplificado, em regime pseudo-estacionário e isotérmico, da gaseificação do carvão sofrendo gaseificação com vapor dágua é analisada por meio de balanços diferenciais de conservação de massa de cada espécie química. O modelo leva em conta as reações do vapor dágua com o carbono e o monóxido de carbono. Estas duas reações aparecem no modelo como condições de contorno lineares, que englobam fenômenos intraparticulares, os quais são agrupados à superfície

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21

Soma, Shu. "Experimental and Theoretical Study on Enhancing Effect of Capillary Evaporation." Kyoto University, 2020. http://hdl.handle.net/2433/253276.

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22

Chaix, Laurent. "Influence de la méthode de fabrication et de l'histoire thermique de la glace sur ses propriétés de surface : implications atmosphériques." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10102.

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L'influence de la methode de preparation de la glace et de son histoire thermique sur la structure de sa surface a ete mesuree a 77,15k en utilisant l'adsorption du methane a 77,15 et 87,1k. Les isothermes d'adsorption du methane ont ete obtenues pour des recouvrements de surface compris entre 0,1 et plusieurs monocouches et entre 10-6 et 10-2 mocouche. Nous avons ainsi pu constater que la methode de preparation et l'histoire thermique de l'echantillon de glace affectaient ses proprietes d'adsorption a faibles recouvrements ; par contre aucune influence n'a pu etre decelee pour des recouvremen

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23

Li, Ran. "Isothermal Oxidation Study of Gd2Zr2O7/YSZ Multi-Layered Thermal Barrier Coatings." Thesis, Högskolan Väst, Avd för tillverkningsprocesser, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-8139.

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Conventional yttria stabilized zirconia (YSZ) are widely used in the gas turbine to protect the substrate material from high temperature. But the common YSZ top coatings have limitations at higher temperature (above 1200 ℃) due to significant phase transformation and intensified sintering effect. Among the list of pyrochlores, gadolinium zirconate offer very attractive properties like low thermal conductivity, high thermal expansion coefficient and CMAS resistance. However, a lower fracture toughness than YSZ and tendency to react with alumina (thermal grown oxide) can lead to lower lifetime.

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24

Yalala, Bongani Ndhlovu. "Ion exchange resins an functional fibres :a comparative study for the treatment of brine waste water." Thesis, University of the Western Cape, 2009. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8342_1298358875.

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<p>To improve the adsorption capacity of polyacrylonitrile (PAN) fibres, hydrophilic amidoxime fibres were prepared by subsequent conversion of the cyano groups to an amidoxime group by reacting with hydroxylamine at 80&deg<br>C at an optimum amidoximation time of 2 hrs. The amidoxime fibre was hydrolyzed/alkali treated in a solution of sodium hydroxide to enhance or improve the adsorption properties. This was followed by characterization of the amidoxime and hydrolyzed fibres using Scanning electron microscopy (SEM)<br>Fourier transform Infrared Spectroscopy (FTIR) and exchange capacity (cati

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25

Raud, Christophe. "Fissuration des composites carbone à matrice thermostable en traction isotherme et cyclage thermique." Cachan, Ecole normale supérieure, 1993. http://www.theses.fr/1993DENS0013.

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Ce travail vise a mieux comprendre les phénomènes qui régissent la microfissuration des stratifies carbone/matrice organique thermostable. Deux matériaux représentatifs des classes de température 200-250c (t800/5250 et t800/pmr-15), élaborés suivant plusieurs conditions de moulage, ont été étudiés. Il s'agit de déterminer l'influence des paramètres de fabrication sur la sensibilité a la microfissuration d'un drapage modelé 0#2,90#2#s dans des conditions de chargement quasi-statiques (traction uniaxiale) ou en sollicitation thermique alternée : en isotherme, des essais en traction statique inte

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26

Farmer, Robin Sandra. "A Study of Crystallization in Bisphenol-A Polycarbonate." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/35996.

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The crystallization behavior of bisphenol-A polycarbonate (BAPC) was studied, focusing on the initial stage of crystallization and the secondary stage of crystallization. Bisphenol-A polycarbonate was the polymer chosen for this study because of its slow crystallization rate. With slow crystallization kinetics, the polymer morphology does not change when quenched below its glass transition temperature, enabling the study of different stages of crystallization through the frozen morphology. The study of the initial stages of crystallization pertained to crystallization times prior to the g

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27

Cowling, Neil Peter. "Thin film flow over a topography and non-isothermal droplets : a numerical study." Thesis, University of Leeds, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.551241.

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Research towards understanding continuous thin film flows and droplet spreading is as relevant today as it ever was. Theoretically, lubrication theory has played a pivotal role with the equations involved requiring numerical solution. The most commonly employed solvers are based upon either a time-splitting or multigrid strategy; no consensus has been reached as to which is the most accurate and efficient. With modern engineering applications demanding solutions at smaller and smaller scales, in turn requiring the use of finer grids to ensure mesh independent solutions, efficiency is a necessa

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28

Chiu, Ya-Tien. "A Performance Study of a Super-cruise Engine with Isothermal Combustion inside the Turbine." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/30202.

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Current thinking on the best propulsion system for a next-generation supersonic cruising (Mach 2 to Mach 4) aircraft is a mixed-flow turbofan engine with afterburner. This study investigates the performance increase of a turbofan engine through the use of isothermal combustion inside the high-pressure turbine (High-Pressure Turburner, HPTB) as an alternative form of thrust augmentation. A cycle analysis computer program is developed for accurate prediction of the engine performance and a supersonic transport cruising at Mach 2 at 60,000 ft is used to demonstrate the merit of using a turburn

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29

Chiu, Ya-tien. "A Performance Study of a Super-cruise Engine with Isothermal Combustion inside the Turbine." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/30202.

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Анотація:

Current thinking on the best propulsion system for a next-generation supersonic cruising (Mach 2 to Mach 4) aircraft is a mixed-flow turbofan engine with afterburner. This study investigates the performance increase of a turbofan engine through the use of isothermal combustion inside the high-pressure turbine (High-Pressure Turburner, HPTB) as an alternative form of thrust augmentation. A cycle analysis computer program is developed for accurate prediction of the engine performance and a supersonic transport cruising at Mach 2 at 60,000 ft is used to demonstrate the merit of using a turburner

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30

Aachib, Mostafa. "Deplacement isotherme de deux fluides miscibles dans un milieu poreux sature : effets de densite et de viscosite, critere de stabilite." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13096.

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Etude de l'influence des contrastes de densite et de viscosite sur le deplacement miscible lors d'un passage du regime stable au regime instable. On propose un modele empirique pour un deplacement miscible eau douce-solution de chlorure de calcium: etude experimentale par mesure des conductivites electriques. Mise en evidence d'un critere de stabilite

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31

Perchanok, Mathias Samson. "Isothermal scale model study of the gas flow field in a hog fuel boiler furnace." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28510.

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Good combustion is required to maximize steam generation and avoid emissions in the wood waste fired boilers found frequently in the pulp and paper industry. The combustion process is assisted if velocities above the grate are minimized, if gases in the combustion zone are mixed intimately, and if gaseous combustion is concentrated above the grate. A 1/15 scale replica of a power boiler was constructed for isothermal flow modelling of the flow field above the grate, the overfire air jets and the furnace up to the generating banks. The flow was made visible with smoke, and velocities were meas

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32

Midgley, Kristofer. "An isothermal experimental study of the unsteady fluid mechanics of gas turbine fuel injector flowfields." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/10755.

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Low-emissions combustor design is crucially important to gas turbine engine manufacturers. Unfortunately, many designs are susceptible to unsteady oscillations that can result in structural fatigue and increased noise. Computational approaches that resolve flow unsteadiness, for example Large Eddy Simulation (LES), are being explored as one avenue to help understand such phenomena. However, in order to quantifY the accuracy of LES predictions, benchmark validation data in suitably chosen test cases are required. Comprehensive experimental data covering both time-averaged and timeresolved featu

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33

Martínez, del Álamo Manuel. "Numerical study of isothermal two-phase flow dispersion in the packed bed of a hydrodesulfurization reactor." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/51766.

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El objetivo principal de este trabajo es predecir la dispersión de un flujo bifásico en el lecho de un reactor de hidrodesulfuración. Se consideran propiedades físicas constantes, sin incluir reacciones químicas ni procesos de transferencia de calor ni materia. Dos herramientas de simulación diferentes se han utilizado en este estudio. Una de ellas es el software comercial Fluent, ampliamente utilizado en el campo de la Computación en Dinámica de Fluidos, en el que se han introducido nuevos modelos de arrastre y capilaridad no incluidos en la versión comercial del software. La segunda herramie

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34

Pocheron, Mickaël. "Life-time prediction of solder joints used in surface mount assemblies during thermo-mechanical and isothermal aging." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0245.

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Les directives ROHS et WEEE banniront, dans les années qui viennent, le plomb de l’industrie électronique. Seulement, les assemblages électroniques de Schlumberger destinés à des applications hautes températures, tels que les ceux faisant intervenir des composants montés en surface, font intervenir des brasures à forte teneur en plomb. C’est pourquoi, Schlumberger investit énormément afin de trouver de nouvelles brasures sans plomb pour les remplacer. Ce projet, qui s’inscrit dans ce cadre, a pour objectif de prédire la durée de vie d’assemblages utilisant ces nouvelles brasures avec un substr

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35

Shih, Angela Chao-Hsuan Hunt Melany L. Hunt Melany L. "The study of Taylor-Couette flows with superimposed isothermal and heated axial flows at high Taylor numbers /." Diss., Pasadena, Calif. : California Institute of Technology, 1994. http://resolver.caltech.edu/CaltechETD:etd-12112007-104052.

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36

Norman, Per-Albin. "Filter Materials for Sorption of Cu and Zn in Stormwater Treatment: A Batch Equilibrium and Kinetic study." Thesis, Luleå tekniska universitet, Arkitektur och vatten, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-68059.

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Urban stormwater is today recognized as a significant source of pollution that has contributed to the deterioration of water quality in lakes and streams. Of the pollutants, metals are commonly occurring in stormwater and can cause major damage when released into the receiving waters. A promising treatment method for removing these metals before it reaches the receiving waters is to filter the water in various filter technologies such as catch basin inserts. In this study, the potential of five materials to remove dissolved copper (Cu) and zinc (Zn) from stormwater was investigated. The study

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37

Papadopoulou, Athina. "The application of capillary electrophoresis, isothermal titration calorimetry and fluorescence spectroscopy for the study of protein-polyphenol interactions." Thesis, University of Reading, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430942.

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38

Haynes, Comas Lamar. "A study of high pressure operation of isothermal tubular solid oxide fuel cells and their integration with gas turbines." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16762.

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Pathiraja, Inoka Kumari. "Removal of Acid Yellow 25 Dye onto Chitin Extracted from Waste Crab legs and Study of Adsorption Isotherms and Kinetics of AY25 Dye Adsorption." Thesis, Southern Illinois University at Edwardsville, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1565520.

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<p> Acid Yellow 25 (AY25) is used in the textile industry for dyeing of natural fibers as well as synthetic fibers. To a lesser extent, it is also used as a coloring agent in paints, inks, plastics, and leather. Effluents from such industries are major sources of water pollution. Dyes in wastewater are difficult and costly to remove since they are stable to oxidizing agents and light. Hence, it is important to find simple, efficient, and inexpensive ways to remove the dyes from wastewater. The objective of this study is to determine the suitability of chitin extracted from waste crab legs as a

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40

Numbonui, Ghogomu Julius. "Transports facilités et actifs couplés à l'énergie thermique dans les systèmes membranaires non-isothermes. Applications à l'acide borique et au gaz carbonique." Rouen, 1993. http://www.theses.fr/1993ROUES058.

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Nous avons entrepris d'illustrer le transport-réaction non isotherme par des exemples étudiés précédemment au laboratoire en conditions isothermes : le transport facilité de l'acide borique par l'ion borate à travers une membrane échangeuse d'anions et le transport facilité du dioxyde de carbone par l'éthylènediamine monoprotonée à travers une membrane échangeuse de cations. Ces deux exemples mettent en jeu respectivement la formation des polyborates et d'un complexe carbamique dont les stabilités diminuent avec la température. L'étude expérimentale détaillée de ces deux systèmes est suivie d'

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41

Ayad, Djamel. "Etude du comportement viscoélastique linéaire du polyfluorure de vinylidène : corrélation avec sa microstructure et son aptitude à l'étirage en phase fondue." Saint-Etienne, 1996. http://www.theses.fr/1996STET4007.

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Le but de cette étude est d'établir des relations entre les caractéristiques moléculaires du polyfluorure de vinylidène, son comportement viscoélastique linéaire et son aptitude à l'étirage en phase fondue. Les paramètres moléculaires moyens ont été déterminés et comparés aux résultats les plus récents concernant ce sujet. L'incapacité des modèles de Cole-Cole et de Carreau-Yasuda à décrire le comportement viscoélastique observé nous a incité à utiliser la notion de spectre de distribution des temps de relaxation. Deux méthodes de détermination de ce spectre ont ainsi été choisies et comparées

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42

Covington, Michael Neal. "Development of an evolved gas analysis instrument and the investigation of a stepped isothermal method for the study of water desorption from zeolites." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/6995.

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A stepped isothermal pressure change method for the investigation of water desorption from zeolites has been developed. Stepped isothermal evolved gas analysis (SI-EGA) utilizes static methods, in a unique way, to determine kinetic data. This method produces isothermal kinetic data. The problems associated with dynamic methods are reduced by the use of an isothermal method. Zeolites NaY, NaX, and CaX have been investigated to determine if the SI-EGA method yields reliable kinetic data. This method consists of multiple expansions into vacuum carried out through a temperature range. The results

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Viera, Sotillo Juan Pablo. "Experimental study of the effect of nozzle geometry on the performance of direct-injection diesel sprays for three different fuels." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/81857.

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This thesis studies the influence of internal nozzle flow characteristics over a large spectrum of experimental conditions and diagnostics. Experiments were carried out for two nozzle geometries---cylindrical and conical single hole nozzles---and three different fuels. Two of the fuels are pure components---n-heptane and n-dodecane---while the third fuel consists of a three-component surrogate to better represent the physical and chemical properties of diesel fuel. Measurements include a complete hydraulic characterization consisting of instantaneous injection rate and spray momentum flux meas

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Baird, Sharon. "A study of type-3 copper proteins from arthropods." Thesis, University of Stirling, 2007. http://hdl.handle.net/1893/266.

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Arthropod hemocyanin and phenoloxidase are members of a group of proteins called the Type-3 copper oxygen-binding proteins, both possessing a highly conserved oxygen-binding site containing two copper atoms each coordinated by three histidine residues (Decker and Tuczek, 2000). Despite similarities in their active site, these proteins have very different physiological functions. Phenoloxidase possesses both tyrosinase and o-diphenoloxidase activity, and is predominantly involved in reactions which protect insects from infection (Kopàcek et al., 1995). Hemocyanin is a large multi-subunit protei

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Tavant, Antoine. "Study of the plasma/wall interaction and erosion on a plasma thruster of low power." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX085.

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Les moteurs électriques pour satellites, qui accélèrent les ions d'un plasma, sont primordiaux pour le succès des missions spatiales (GPS, météo, communication, etc.).Le moteur à effet Hall fait partie des technologies les plus performantes et utilisées.Cependant, sa conception et son optimisation sont longs et coûteux, car des processus clefs sont encore mal compris, en particulier, le transport des électrons et l'interaction plasma-paroi.Afin d'étudier ces deux phénomènes, nous utilisons une simulation cinétique bidimensionnelle.Grace aux résultats de simulation 2D, nous avons mis en évidenc

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46

Kovarik, Libor. "Microstructural study and modeling of metastable phases and their effect on strenghthening [sic] in Al-Mg-Cu-Si alloying system." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1149006665.

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47

Bouzar, Khalida. "Approche thermodynamique de l'organisation moléculaire de la phase liquide du toluène sous pression : détermination des expansivités et compressibilités sivities." Paris 6, 1986. http://www.theses.fr/1986PA066312.

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Mesures, par la méthode piezothermique, du coefficient de dilatation thermique et du coefficient de compressibilité isotherme, dans l'intervalle 200-450 k, sous des pressions atteignant 4000 bars; ajustement des résultats, établissement d'une équation phénoménologique du coefficient de dilatation comme fonction de la pression et de la température, permettant la détermination des propriétés thermodynamiques. Discussion de l'organisation moléculaire à la lumière des résultats obtenus et de données spectroscopiques (RMN, diffusion de la lumière).

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48

Hamou, Ahmed. "Relaxation et cristallisation d'alliages chalcogènes vitreux riches en sélenium : influence de la coordination de l'élément d'addition." Rouen, 1993. http://www.theses.fr/1993ROUES001.

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Le but du travail présenté dans cette thèse est de chercher à partir de matériaux modèles, des grandeurs ou des méthodes pouvant caractériser la structure d'un verre. Dans une première partie, nous justifierons le choix des alliages étudiés (Se, Se-As, Se-Bi et Se-Ge). Puis nous présenterons leurs structures cristallines et vitreuses, enfin nous donnerons un bref aperçu des méthodes expérimentales utilisées pour la fabrication et le contrôle des échantillons. La deuxième partie est consacrée aux résultats expérimentaux. Par les études de la relaxation et la cristallisation des alliages étudiés

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Bob and 張根穆. "The study of the Isotherm adsorption phenomenon of the alkaline regeneration active carbon to deal with the sulfide into waste gas." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/51208210523812931343.

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碩士<br>國立成功大學<br>環境工程學系<br>88<br>This study was not only confirmed with the feasible to reuse the basic impregnated carbon, made from regeneration spent activated carbon, but also dealt with the adsorption characteristics of hydrogen sulfide at different adsorption system. Research works was including physicochemical characteristics of carbon, adsorption capacity and cost-benefit analysis. Used the column and batch adsorption system to investigate the adsorption mechanism and assess the potential of using the batch system to replace the column adsorption system for break through curve preduct

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Wang, Jing-hung, and 王景弘. "Study on Sorption Isotherms and Moisture Migration of Composite Foods." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/87944445697621662134.

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碩士<br>大葉大學<br>生物產業科技學系<br>100<br>Preserved foods containing more than one component are called as composite foods, among which moisture transfer phenomenon often occurs. In the condition of long-term preservation, moisture transfer easily occurs among each heterogeneous component, results in a tremendous impact on food quality, and affects food safety. Previous studies of the moisture in composite foods focused on discussions of overall water activity, and seldom involved equilibrium moisture content of heterogeneous components and moisture transfer among them. Therefore, this study selected c

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