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Relevant bibliographies by topics / Thermo-Kinetics / Dissertations / Theses

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Dissertations / Theses on the topic 'Thermo-Kinetics'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Muralidas, Pooja. "Thermo-gravimetric Analysis of Corrosion Kinetics of Ti and Zr Coated P91 Steel." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/theses/2057.

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In recent decade growing concerns of CO2 emissions from power plants have increased, which led to development of technologies like oxy-fuel combustion process. P91 steel is profoundly used in power plants, but oxy fuel combustion exacerbates corrosion due to recycling of flue gas. This paper studied the kinetics of the corrosion rate on the boiler tubes and furnace and help achieve a corrosion resistant coating over it. Refractory metal diffusion coating is created and tested at high temperature in corrosive atmosphere. This was done by forming Ti and Zr diffusion coating on P91 steel using p

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2

Tita, Bertrand Asongwe. "Waste-to-Energy : A study on Reaction Kinetics of Tropical Wood Sawdust." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-9746.

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The reaction kinetics of Iroko and Mahogany were studied using TGA. The pyrolysis process was achieved using six different heating rates of 2,5,8,12,15 and 20˚C. A 15˚C/min heating rate was used for gasification in steam at different temperatures while varying the concentrations of nitrogen and steam in the process. The kinetic parameters, activation energy and pre exponential factor, were obtained by implementing two chosen kinetic models. These models are: Friedman’s Iso-conversional Method, Flynn-Wall-Ozawa Method (FWO). There were substantial differences in the values of the kinetic triple

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3

Brown, Tracy. "Investigation of the rheology, cure kinetics, and thermo-mechanical properties of GRC-A loaded with zeolites." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2010. http://digitalcommons.auctr.edu/dissertations/256.

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Phenylethynyl terminated imides (PETI) are high temperature, high performance matrix resins that can be processed into composites by various methods including resin transfer molding (RTM) arid vacuum assisted resin transfer molding (VARTM). PETI resins have experienced extremely rapid development in recent years, with major emphasis placed on engineering applications that take advantage of their high cured TgS,high thermooxidative stability, high strength to weight ratio, outstanding mechanical properties, and compatibility with RTM and VARTM processing. In recent years the addition of nanopar

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4

Al-Salem, S. "Thermo-Chemical Treatment (TCT) of polymers in multi-scale reactors : a kinetics and Life Cycle Assessment (LCA) study." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1394441/.

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The main reasons behind the success of the petrochemicals industry are not only the vast array of products that it provides - considered vital to our daily functions - but also the added value that it brings to the crude oil barrel price, making it a reliable venture for any concerned party. However, the industry is now faced with a fluctuating market and an unstable economy, which makes it imperative to find a more abundant and sustainable feedstock. Of all petrochemical derivatives, polymers (and their related industries) occupy the major share, and this makes the plastics industry a growing

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Bhagavatula, Abhijit. "THERMO-CHEMICAL CONVERSION OF COAL-BIOMASS BLENDS: KINETICS MODELING OF PYROLYSIS, MOVING BED GASIFICATION AND STABLE CARBON ISOTOPE ANALYSIS." UKnowledge, 2014. http://uknowledge.uky.edu/cme_etds/43.

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The past few years have seen an upsurge in the use of renewable biomass as a source of energy due to growing concerns over greenhouse gas emissions caused by the combustion of fossil fuels and the need for energy independence due to depleting fossil fuel resources. Although coal will continue to be a major source of energy for many years, there is still great interest in replacing part of the coal used in energy generation with renewable biomass. Combustion converts inherent chemical energy of carbonaceous feedstock to only thermal energy. On the other hand, partial oxidation processes like ga

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6

Couchet, Clélia. "New insights in understanding the interaction between recrystallization and phase transformation during intercritical annealing in DP steels." Electronic Thesis or Diss., Université de Lorraine, 2024. http://www.theses.fr/2024LORR0019.

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La formation des microstructures est cruciale pour la sidérurgie. Pour les aciers Dual Phase (DP), utilisés dans l'automobile, celle-ci a lieu lors du recuit intercritique après le laminage à froid. Après la chauffe, la microstructure est composée de ferrite et d'austénite recristallisées. Lors du refroidissement, l'austénite se transforme partiellement en ferrite puis en martensite pour atteindre la microstructure ferrite/martensite finale. L'austénitisation est cruciale pour contrôler les fractions et tailles de phase finales et donc leurs propriétés mécaniques. De nombreuses études montrent

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7

Maach, Nicolas. "Modélisation cinétique de l'hydratation en systèmes dilués des aluminates de calcium : Des mécanismes chimiques aux modélisations par les Population Balance Equations." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI127.

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Ces travaux s’articulent autour de la modélisation cinétique de l’hydratation des ciments alumino-calciques (CAC) pour en améliorer la compréhension et la maîtrise. L’aspect cinétique pour ces ciments est essentiel en raison des nombreux états métastables qu’ils traversent (e.g. conversion).Des modèles de cinétique intégrés dans l’espace existent déjà pour simuler des pâtes de mortier mais ils requièrent la connaissance des lois de cinétiques. Malheureusement, ces lois sont mal identifiées pour les CAC et c’est ce qui motive la création d’un modèle pour des suspensions minérales. L’étude de su

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8

Contri, Boris. "Procédés d’assemblages céramique – métal : étude des couples Inconel®625 – Alumine et Titane Zirconium Molybdène (TZM) – Carbure de silicium." Electronic Thesis or Diss., Limoges, 2023. http://www.theses.fr/2023LIMO0093.

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Ces travaux de thèses ont pour objectif de présenter les résultats obtenus sur l'assemblage de deux couples de matériaux métal - céramiques par thermocompression : Inconel®625 / Alumine et TZM / Carbure de silicium. Elle se place dans la continuité des résultats obtenus sur des assemblages similaires, au sein du laboratoire IRCER, en étudiant la faisabilité de liaisons direct et de liaison après préoxydation de la partie métallique. Une partie est dédiée à la compréhension du mécanisme d’oxydation de l’inconel®625 en utilisant une thermobalance à insertion à chaud. A l’aide des cinétiques obte

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9

Wessman, Sten. "Applications of Computational Thermodynamics and Kinetics on Transformations in Stainless Steels." Doctoral thesis, KTH, Skolan för industriell teknik och management (ITM), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121337.

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Stainless steels are high-alloyed, usually with multiple components and often also dual matrix phases, as for duplex stainless steels. This make predictions and calculations of alloying effects on equilibria and transformations complicated. Computational thermodynamics has emerged as an indispensable tool for calculations within these complex systems with predictions of equilibria and precipitation of phases. This thesis offers examples illustrating how computational methods can be applied both to thermodynamics, kinetics and coarsening of stainless steels in order to predict microstructure an

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10

Souza, Luiz Augusto Gesteira de. "Cálculos usando métodos de estrutura eletrônica na obtenção de parâmetros cinéticos e termoquímicos." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/46/46132/tde-08022018-090432/.

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Cálculos usando métodos de estrutura eletrônica (Hartree-Fock, Mõller-Plesset de segunda ordem e DFT, B3LYP) foram efetuados pelo programa Gaussian98 em microcomputadores e estações de trabalho, com o objetivo de elucidar os canais de decomposição unimolecular de éter dietílico em fase gasosa e foram comparados com valores obtidos através de aproximações baseadas na mecânica estatística pela metodologia de Benson. O éter dietílico vem sendo usado como um aditivo para o óleo diesel e combustível alternativo e o conhecimento de suas vias vias de decomposição é fundamental nestas investigações. D

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11

Duchatel, Xavier. "Dégradation thermo-oxydante du poly(fluorure de vinylidène)." Rouen, 1996. http://www.theses.fr/1996ROUES009.

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Le PVDF, réputé particulièrement stable chimiquement et thermiquement, est largement utilisé dans le domaine du forage pétrolier « off shore ». Dans ce type d'utilisation, la contrainte en température peut atteindre plus de 140°C. Or, jusqu'à présent, la plupart des études de dégradation menées ont été faites à des températures très supérieures. Nous avons étudié les différentes réactions de dégradation du PVDF sur une large gamme de température (400 à 140°C) dans des atmosphères neutres ou oxydantes. Il s'est avéré que la déhydrofluoration et la réticulation étaient les principaux phénomènes

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12

Rosenhaim, Raul. "Avaliação das Propriedades Fluído-dinâmicas e Estudo Cinético por Calorimetria Exploratória Diferencial Pressurizada (PDSC) de Biodiesel Etílico Derivado de óleo de fritura usado." Universidade Federal da Paraíba, 2009. http://tede.biblioteca.ufpb.br:8080/handle/tede/7166.

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Made available in DSpace on 2015-05-14T13:21:45Z (GMT). No. of bitstreams: 1 parte1.pdf: 2326464 bytes, checksum: edf040b92b5fdf343007a3626c02e26b (MD5) Previous issue date: 2009-02-19<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The present work aimed at investigating the biodiesel issuing from the transesterification of used frying oil with ethanol, via alkaline catalysis. Such investigation covers its thermo-oxidative stability during heating (thermal analysis and rheological properties) as well the kinetic profiles of the samples in the best oxidative in

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13

Tzu-Meng, Lin, and 林子孟. "Study on photopolymerization kinetics and thermo-physics property of UV curable resins." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/27970029930583350705.

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碩士<br>國立臺北科技大學<br>化學工程系碩士班<br>91<br>Formulation of UV curable resins used in this study contains aliphatic polyester based urethane diacrylate oligomer, tripropylene glycol diacrylate as difunctional monomer diluter and photoinitiator. In this study, concentration of photoinitiator and monomer diluter and clay in the formulation was varied separately to investigate its effect on the curing behavior and the thermo- physical properties of cured film. FTIR was employed to monitor the UV curing reaction and find the radiating time for complete reaction. UV Curing kinetic study was carried out on D

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14

Zhanshayeva, Lyazzat. "Towards macroscopic modeling of electro-thermo-mechanical couplings in PEDOT/PSS: Modeling of moisture absorption kinetics." Thesis, 2018. http://hdl.handle.net/10754/628057.

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Organic conducting polymer, poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS), is widely recognized for its electro-actuation mechanism and is used in flexible electronics. Its high potential as actuator is based on a strong coupling between chemical, mechanical and electrical properties which directly depends on external stimuli. There is no model today to describe the interplay between moisture absorption, mechanical expansion and electrical stimulus. Elucidating the role of each component in the effective actuation properties is needed to further optimize and tailor suc

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15

Lourens, Leon. "Reduction of iron ore fines in the Ifcon furnace." Diss., 2003. http://hdl.handle.net/2263/27383.

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This work involved an investigation into the mechanisms governing the reduction of material in the solids bed of the Ifcon® process. Thermo gravimetric analyses were done to investigate the influence of various operational parameters on the rate of solid state reduction. The experiments were modeled, and model predictions were compared to experimental results. Kinetic data was analised and the reduction rate constants were calculated. The rate constants were used as inputs to a model, which describes the reduction behaviour and temperature profile in a composite solids bed (similar to that in

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16

Sello, Maitse P. "The laves phase embrittlement of ferritic stainless steel type aisi 441." Thesis, 2010. http://hdl.handle.net/2263/25481.

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The effect of Laves phase (Fe2Nb) formation on the Charpy impact toughness of the ferritic stainless steel type AISI 441 was investigated. The steel exhibits good toughness after solution treatment at 850°C, but above and below this treatment temperature the impact toughness decreases sharply. With heat treatment below 850°C the presence of the Laves phase on grain boundaries and dislocations plays a significant role in embrittlement of the steel whereas above that temperature, an increase in the grain size from grain growth plays a major role in the impact embrittlement of this alloy. The tou

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17

Maier, Friedrich. "Improved tracer techniques for georeservoir applications." Thesis, 2014. http://hdl.handle.net/11858/00-1735-0000-0022-5D95-9.

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Für eine effiziente und nachhaltige Nutzung von Georeservoiren sind bestmögliche Reservoirmanagementverfahren erforderlich. Oft setzen diese Verfahren auf Tracer-Tests. Dabei enthalten die aufgezeichneten Tracersignale integrale Informationen der Reservoireigenschaften. Tracer-Tests bieten somit eine leistungsfähige Technik zur Charakterisierung und Überwachung der bewirtschafteten Georeservoire. Im Gegensatz zu Tracer-Tests mit konservativen Tracern, welche bereits etablierte Testroutinen zur Verfügung stellen, ist die Verwendung von reaktiven Tracern ein neuer Ansatz. Aufgrund unpassender ph

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