Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 52 for “"Thermodynamic models"”.
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Analysis of combinatorial gene regulation with thermodynamic models
… method, Interaction-Identifier, to identify a thermodynamic model that best describes the form of TF-TF interaction among a set of TFs for every target gene. Applying this approach to time-course microarray data in mouse embryonic stem cells, we have inferred five interaction patterns among …
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Computational Exploration of Thermodynamic Models of Geological CO₂ Injection
… injection scenarios. The study examines how the thermodynamic accuracy of the Span-Wagner Equation of State influences flow characteristics, in comparison to the Ideal Gas Equation of State. Through a series of coupled pipe-reservoir simulations, we assess variations in pressure and density as …
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Improving Thermodynamic Models of Transcription by Combining ChIP and Expression Measurements of Synthetic Promoters
… process in biology. Accurate mathematical models of the relationship between regulatory sequence and observed expression would advance our understanding of biology.</p><p>I developed ReLoS, a regulatory logic simulator, to explore mathematical frameworks for describing the relationship …
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Predicting Phase Equilibria Using COSMO-Based Thermodynamic Models and the VT-2004 Sigma-Profile
Solvation-thermodynamics models based on computational quantum mechanics, such as the conductor-like screening model (COSMO), provide a good alternative to traditional group-contribution methods for predicting thermodynamic phase behavior. Two COSMO-based thermodynamic models are COSMO-RS (real …
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A comparison of thermodynamic models for the prediction of phase behavior in aqueous-polymer two-phase systems
… molecules is not completely understood. A thermodynamic model which could accurately represent the phase equilibria exhibited by these systems would be useful for the design of systems for use in many different applications. A potpourri of thermodynamic models and their underlying …
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The investigation of the thermodynamic properties of liquid metal solutions
The development of thermodynamic models for liquid metal solutions is reviewed and applications of these models are discussed. In addition, directions where new or more work is needed are suggested.
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A spectroscopic investigation of the thermodynamic properties of liquid organic mixtures
Several thermodynamic models for liquid organics have been developed and will be discussed in this thesis. In addition, recommendations are made for new areas to explore in order to further enhance our understanding of solution properties.
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Thermodynamics and kinetics of ceramic/metal interfacial interactions
… zirconias and active metals. Semi-empirical thermodynamic models of all the phases likely to take part in the ceramic/metal interfacial interactions studied were developed. Phase diagram data and thermochemical information were critically assessed and use to adjust the thermodynamic …
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A Study of Hydrogen-Bonded Solutions With NMR Spectroscopy
Several thermodynamic models have been proposed for alcohol-hydrocarbon solutions using chemical-physical theories with the alcohol assumed to self-associate through hydrogen bonds. These models do an excellent job of correlating vapor-liquid equilibria, excess enthalpy and mutual solubility data. …
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Linear and Nonlinear Modelling of Gas Turbine Engines
… turbine modelling, with the aim of estimating models which can be used to verify the linearised thermodynamic models derived from the engine physics, at different shaft speeds. A detailed analysis of the engine data is presented and linear engine models are identified at different operating …
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Flux-split algorithms for flows with non-equilibrium chemistry and thermodynamics
… when finite-rate chemistry and non-equilibrium thermodynamics greatly affect the physics of the problem. Two flux-vector-split algorithms, of the Steger-Warming and of the Van Leer type, and one flux-difference-split algorithm of the Roe type are established and utilized for the accurate …
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Miniature HCCI Engine Compressor
… working against a backpressure of 170 kPa. Two thermodynamic models of the air compressor were created which matched experimental results but did not capture all the details of compressor operation.
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Intermolecular interactions in supercritical fluid solutions from fluorescence spectroscopy
… to probe the local interactions. In contrast to thermodynamic measurements, this technique determines the strength of interactions on a molecular scale, which is important in the development of more accurate thermodynamic models. For pyrene, naphthalene, dibenzofuran and carbazole in SCF …
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Thermophotovoltaics : shaping the flow of thermal radiation
… lighting and sensor applications. Ideal thermodynamic models that capture dominant power transfer mechanism for TPV and micro-TPV case, are developed and used for the design, optimization and system performance estimation of TPV systems with photonic-crystals. Furthermore, we propose for …
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Identification of linear and nonlinear systems using multisine signals with a gas turbine application
… system identification techniques allow dynamic models to be directly estimated from measured data and the design of the data gathering experiment is a key step in any identification procedure. This thesis deals with the design of test signals for both linear and nonlinear modelling and their …
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Studies on Hydrogen-Pinch Analysis and Application of COSMO-SAC to Electrolytes
… which enables the application of solvation-thermodynamic models to predict vapor-liquid and solid-liquid equilibria, and other properties. We propose to add an additional term to the exchange energy to account for ion-ion attractive and repulsive forces. We also look at the resulting …
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An integrated geometric and thermodynamic performance model of the 2.670 Stirling Engine
… the design of the 2.670 Stirling Engine. A thermodynamics model of the engine was created in Matlab and a parametric solid model was created in SolidWorks. Then, DOME was used to link the Matlab thermodynamic models to the Solidworks cad model so that when geometric parameters are changed …
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Ion bombardment induced compositional changes in compound semiconductor surfaces studied by XPS combined with LEISS
… Sigmund linear collision cascade theory and the thermodynamic models based on bombardment induced Gibbsian surface segregation and diffusion, were investigated. Computer simulation using TRIM code was also carried out for assistance to the theoretical analysis. Combined the results obtained from …
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Contrasting Geometric Variations of Mathematical Models of Self-assembling Systems
… we explore multiple augmentations of well known models of self-assembly to gain a better understanding of the roles that geometry and space play in their dynamics. We begin in the abstract Tile Assembly Model (aTAM) with some examples and a brief survey of previous results to provide a …
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Microphysics of atmospheric aerosols : phase transitions and cloud formation mechanisms
… ammonium nitrate particles show that the current thermodynamic models do not correctly predict water activities in these particles under super-saturated conditions. High super-saturations are required for ice to nucleate homogeneously in aqueous ammonium nitrate particles. We have also …
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