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Dissertations / Theses on the topic 'Non-Equilibrium conditions'

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1

Abdedou, Nazim. "Non-equilibrium conditions at solid/liquid interfaces." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0346.

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Notre travail porte sur la fusion dite solutale survenant lorsque l'on met deux métaux en contact à une température comprise entre leurs températures de fusion respectives. L'interface solide/liquide se retrouve initialement fortement hors-équilibre et la cinétique propre à son retour à l'équilibre semble mettre en défaut les modèles généralement employés pour décrire la solidification et la fusion. Pour progresser dans la compréhension du processus, nous avons abordé le problème sous trois angles complémentaires. Dans un premier temps, nous avons réalisé des expériences in-situ de fusion solu
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2

Martinelli, Alessandro. "Density relaxations across the glass-transition under equilibrium and non-equilibrium conditions." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/302591.

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Cooling down a liquid below its melting temperature can lead to an amorphous frozen system commonly known as a glass. Despite glasses are common in everyday life, the nature of the glass transition still remains one of the most intriguing unsolved problems of condensed matter physics. In this Thesis the atomic length-scale rearrangements of glassy systems close to the glass transition temperature are explored under equilibrium and non-equilibrium conditions with X-Ray Photon Correlation Spectroscopy (XPCS). In particular, we explore the role of directional stresses on the dynamics in a colloi
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3

Martinelli, Alessandro. "Density relaxations across the glass-transition under equilibrium and non-equilibrium conditions." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/302591.

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Cooling down a liquid below its melting temperature can lead to an amorphous frozen system commonly known as a glass. Despite glasses are common in everyday life, the nature of the glass transition still remains one of the most intriguing unsolved problems of condensed matter physics. In this Thesis the atomic length-scale rearrangements of glassy systems close to the glass transition temperature are explored under equilibrium and non-equilibrium conditions with X-Ray Photon Correlation Spectroscopy (XPCS). In particular, we explore the role of directional stresses on the dynamics in a colloi
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4

Zhang, Qingteng. "Properties of Ferroelectric Perovskite Structures under Non-equilibrium Conditions." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4422.

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Ferroelectric materials have received lots of attention thanks to their intriguing properties such as the piezoelectric and pyroelectric effects, as well as the large dielectric constants and the spontaneous polarization which can potentially be used for information storage. In particular, perovskite crystal has a very simple unit cell structure yet a very rich phase transition diagram, which makes it one of the most intensively studied ferroelectric materials. In this dissertation, we use effective Hamiltonian, a first-principles-based computational technique to study the finite-temperature p
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5

Opdyke, Daniel Robert. "Probabilistic groundwater transport of chemicals under non-equilibrium sorption conditions /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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6

Yang, F. "Radiation transfer characteristics and transport properties of nitrogen-polytetrafluoroethylene mixture plasma under equilibrium and non-equilibrium conditions." Thesis, University of Liverpool, 2016. http://livrepository.liverpool.ac.uk/3004928/.

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Nitrogen constitutes a natural part of air and is a non-global warming gas. There have been recent attempts to use it as a working medium in high voltage circuit breakers to replace SF6, which is an excellent insulating and arc quenching gas but also a strong greenhouse gas with a Global Warming Potential (GWP) of 23,900 and a life time of 3,200 years. To employ the full potential of nitrogen for use in high voltage circuit breakers, the properties and radiation characteristics of its mixture with Polytetrafluoroethylene (PTFE) vapour, an electrical and thermal insulation material, need to be
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7

Sakamoto, Souichi. "Open Quantum Dynamical Theory of Thermodynamics under Non-Perturbative Conditions: Entropy Production and Non-Equilibrium Work." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263489.

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8

Taubert, Daniela [Verfasser]. "Electronic transport experiments on low-dimensional nanostructures at non-equilibrium conditions / Daniela Taubert." München : Verlag Dr. Hut, 2012. http://d-nb.info/1022535692/34.

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9

Fabiano, Federico <1988&gt. "Inversion of remote sensing measurements of Middle and Upper Planetary Atmospheres under non-equilibrium conditions." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8332/1/fabiano_federico_tesi.pdf.

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This thesis treats the inversion of remote sensing measurements (infrared spectra) of middle and upper planetary atmospheres, through bayesian inversion strategy. The first part of the work regards the study of the middle and upper atmosphere of Titan, through inversion of VIMS measurements, a spectrometer aboard the Cassini mission. VIMS measured emission from CO, CH4, HCN and C2H2 in the 3-5 μm region, in conditions of non-Local Thermodynamic Equilibrium (non-LTE). The CO concentration in the upper stratosphere and mesosphere of Titan has been determined from the inversion of a set of
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10

Anderson, Mark Jule Jr. "Cooperative Behavior in Driven Lattice Systems with Shifted Periodic Boundary Conditions." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30606.

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We explore the nature of driven stochastic lattice systems with non-periodic boundary conditions. The systems consist of particle and holes which move by exchanges of nearest neighbor particle-hole pairs. These exchanges are controlled by the energetics associated with an internal Hamiltonian, an external drive and a stochastic coupling to a heat reservoir. The effect of the drive is to bias particle-hole exchanges along the field in such a way that a particle current can be established. Hard-core volume constraints limit the occupation of only one particle (hole) per lattice site. For certain
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11

Morssing, Vilén Eric. "Studies of Disulfide Bridge Formation in Human Carbonic Anhydrase Between Engineered Cysteines in Non Ideal Conformations Under Equilibrium and Kinetic Conditions." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9120.

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<p>Stabilization of proteins is of great interest for the biotechnological society, industrial as well as research areas. Proteins with high stability are more suitable as reagents, easier to handle, store, transport and use in industrial processes. One way to stabilize a protein is to introduce a disulfide bridge into the structure by protein engineering. In this report the formation of a disulfide bridge between engineered cysteines in non ideal conformations in human carbonic anhydrase has been investigated. The disulfide bridge is not formed when the protein is in its native state. It is s
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12

Wehrer, Markus [Verfasser], Kai-Uwe [Akademischer Betreuer] Totsche, Peter [Akademischer Betreuer] Grathwohl, and Bernd [Akademischer Betreuer] Huwe. "Non-equilibrium conditions during organic contaminant mobilization, transport and degradation in the subsurface / Markus Wehrer. Gutachter: Kai-Uwe Totsche ; Peter Grathwohl ; Bernd Huwe." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2015. http://d-nb.info/106721626X/34.

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13

Gracio, Bilro Castela Maria Luis. "Direct Numerical Simulations of plasma-assisted ignition in quiescent and turbulent flow conditions." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC042/document.

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La combustion assistée par plasma a reçu une attention croissante dans les deux communautés de plasma et de combustion. Les décharges Nanoseconde Répétitive Pulsée (NRP) sont des techniques prometteuse et efficaces pour initier et contrôler les processus de la combustion en particulier quand les systèmes d’allumage conventionnels sont inefficaces ou trop coûteux en énergie. Néanmoins, les phénomènes rencontrés dans la combustion assistée par plasma sont encore mal connus. Les études numériques présentées dans la littérature sont limitées à des simulations 1-D et 2-D dans des conditions au repo
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14

AL-AZMI, BADER SHABEEB. "ANALYSIS OF TRANSPORT MODELS AND COMPUTATION ALGORITHMS FOR FLOW THROUGH POROUS MEDIA." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1051059625.

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15

Pinètre, Clément. "Achieving Enantiοpurity Τhrοugh Directed Evοlutiοn and Crystallizatiοn under Νοn-Equilibrium Cοnditiοns". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMR076.

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La cristallisation est beaucoup utilisée pour isoler des molécules d’intérêt pharmaceutique sous formes énantiopures, ce qui nécessite que les énantiomère s’auto-discriminent à l’état solide. Malheureusement, ce comportement est imprévisible et rare (5-10%), car les deux énantiomères cristallisent majoritairement sous forme de composé racémique, empêchant toute résolution chirale par cristallisation. Réalisant que des conditions hors équilibres peuvent surmonter ces statistiques défavorables, nous avons exploré les comportements à l’état solide et les propriétés thermodynamiques de différentes
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16

Svensson, Anton. "Non-smooth and variational analysis of optimization problems and multi-leader-follower games." Thesis, Perpignan, 2020. http://www.theses.fr/2020PERP0003.

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Cette thèse, dont le cadre général est l'optimisation, traite de problèmes d'optimisation non-lisse et de problèmes de théorie des jeux. Elle est constituée de quatre parties. Dans la première, nous présentons le contexte et l'introduction. Dans la deuxième partie, nous discutons quelques règles de calcul sous-différentiel dans des espaces généraux, et présentons notamment certaines formules plus fortes que l'état de l'art, autant dans le cas convexe que dans le cas non convexe. L'accent est mis sur les règles de calcul et conditions d'optimalité approchées et "fuzzy", pour lesquelles aucune c
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17

Zhu, Wenbo. "Soldering interconnects through self-propagating reaction process." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/23259.

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This thesis presents a research into the solder interconnects made through the reactive bonding process based on the self-propagating reaction. A numerical study of soldering conditions in the heat affected zone (HAZ) during bonding was initially carried out in order to understand the self-propagating reactive bonding and the related influencing factors. This was subsequently followed by an extensive experimental work to evaluate the feasibility and reliability of the reactive bonding process to enable the optimisation of processing parameters, which had provided a detailed understanding in te
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18

Baumann, Xavier. "Étude de la composition chimique et des propriétés thermodynamiques et radiatives d'un plasma de SF6-C2F4 en condition de déséquilibre thermique." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30032.

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Le transport du courant électrique sur de longues distances nécessite l'emploi de la haute-tension pour minimiser les pertes en énergie. Toutefois, lorsqu'un défaut survient sur le réseau, il faut pouvoir couper le courant électrique. À cette fin, on utilise des appareils spécifiques comme les disjoncteurs haute-tension qui doivent être capables de couper l'arc électrique qui se forme lors de l'ouverture des contacts électriques. Afin de concevoir et d'améliorer les disjoncteurs, les industriels recourent de plus en plus aux modélisations numériques simulant le comportant de l'arc électrique e
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19

Lee, Soon Il. "Defect-phase equilibrium and ferroelectric phase transition behavior in non-stoichiometric BaTiO₃ under various equilibrium conditions." 2006. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1573/index.html.

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20

Bhatia, Tania. "Phase Evolution In The MgO-MgAl2O4 System Under Non-Equilibrium Processing Conditions." Thesis, 1997. https://etd.iisc.ac.in/handle/2005/2136.

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21

Bhatia, Tania. "Phase Evolution In The MgO-MgAl2O4 System Under Non-Equilibrium Processing Conditions." Thesis, 1997. http://etd.iisc.ernet.in/handle/2005/2136.

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22

Alhakeem, Eyad Ali. "Dosimetry at extreme non-charged particle equilibrium conditions using Monte Carlo and specialized dosimeters." Thesis, 2018. https://dspace.library.uvic.ca//handle/1828/10123.

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Radiotherapy is used in clinics to treat cancer with highly energetic ionizing particles. The radiation dose can be measured indirectly by means of radiation detectors or dosimeters. The dose deposited in a detector can be related to dose deposited in a point within the patient. In theory, however, this is only possible under charged particle equilibrium (CPE). The motivation behind the dissertation was driven by the difficult, yet crucial, dosimetry in non-CPE regions. Inaccurate dose assessment performed with standard dosimetry using ionization chambers may significantly impact the outcomes
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23

Gaikwad, Vaibhav. "Non-equilibrium plasma treatment of C1 and C2 chlorinated hydrocarbons under non-oxidative conditions and characterisation of the resultant polymers." Thesis, 2015. http://hdl.handle.net/1959.13/1310272.

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Research Doctorate - Doctor of Philosophy (PhD)<br>This thesis encompasses an investigation of the efficacy of a dielectric barrier discharge for treatment of chlorinated hydrocarbons in a non-oxidative environment by converting them to environmentally benign and potentially valuable products, most notably polymers. The approach for this research is rather unconventional in the sense that unlike the majority of research in this field, we have not singularly targeted the destruction of the chemical, but have rather focussed on its conversion to the aforementioned value added products. The four
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24

Hsu, Yu-Chuan, and 許育銓. "Multiscale Interface and Absorbing Boundary Condition for Non-Equilibrium Molecular Dynamics Simulation: Semi-Analytical Formulation and Machine Learning." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6xbmf8.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>106<br>Molecular dynamics (MD) simulation has been widely applied in studying materials behavior in the past decades. However, owning to its great demands on the modeling fidelity, MD is often limited by the length scale it can handle. Although it is much desired to develop multiscale modeling to overcome this limitation, the development of dynamic multiscale modeling is limited by the spurious wave-reflection problems on the interface between atoms and continuum. This study has developed a multiscale semi-analytical formulation for arbitrary lattices in MD. This me
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25

Beckmann, Alexander Felix. "Modeling evaporation in the rarefied gas regime by using macroscopic transport equations." Thesis, 2018. https://dspace.library.uvic.ca//handle/1828/9238.

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Due to failure of the continuum hypothesis for higher Knudsen numbers, rarefied gases and microflows of gases are particularly difficult to model. Macroscopic transport equations compete with particle methods, such as the direct simulation Monte Carlo method (DSMC) to find accurate solutions in the rarefied gas regime. Due to growing interest in micro flow applications, such as micro fuel cells, it is important to model and understand evaporation in this flow regime. To gain a better understanding of evaporation physics, a non-steady simulation for slow evaporation in a microscopic system, bas
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