Letteratura scientifica selezionata sul tema "Phase rule and equilibrium"

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Articoli di riviste sul tema "Phase rule and equilibrium"

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Seybold, Paul G., Matthew J. O'Malley, Lemont B. Kier, and Chao-Kun Cheng. "Cellular Automata Simulations of Vapor–Liquid Equilibria." Australian Journal of Chemistry 59, no. 12 (2006): 865. http://dx.doi.org/10.1071/ch06230.

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Phase transitions and phase equilibria are among the most fundamental phenomena in the physical and environmental sciences. In the present work an asynchronous stochastic cellular automata model for the equilibrium between a liquid and its vapor is presented. The model is visual, dynamic, and employs just two rules—an attraction probability and a gravitational preference. Application of the attraction rule alone yields a ‘mist’ within the vapor, whereas application of the gravitational rule by itself yields an isothermal atmospheric profile. Application of both rules together causes the vapor
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Shyu, Guor-Shiarn, Nishawn S. M. Hanif, Kenneth R. Hall, and Philip T. Eubank. "Maximum Partial Area Rule for Phase Equilibrium Calculations." Industrial & Engineering Chemistry Research 35, no. 11 (January 1996): 4348–53. http://dx.doi.org/10.1021/ie960203p.

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Chiang, C. S., and William C. Johnson. "Coherent phase equilibria in systems possessing a consolute critical point." Journal of Materials Research 4, no. 3 (June 1989): 678–87. http://dx.doi.org/10.1557/jmr.1989.0678.

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The influence of coherency strains on phase equilibria in a two-phase microstructure is examined for a binary or pseudobinary alloy system possessing a consolute critical point (chemical miscibility gap). The qualitative features of phase equilibria, including the limits of metastability (chemical spinodal), are shown to depend critically on the mechanical loading conditions and the geometric arrangement of the phases in the microstructure. If the elastic state of a phase in a two-phase coherent system is independent of the presence of the other phase, then the equilibrium characteristics usua
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Fujita, Hiroshi. "Non-equilibrium phase formation." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (August 1990): 506–7. http://dx.doi.org/10.1017/s0424820100175661.

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The most important advantage of EM’s is in situ experiments on detailed processes of the same phenomena that occur in bulk materials. In recent years, in situ experiments with HVEM’s, in particular with a 3MV ultra-HVEM , has made it possible to create non-equilibrium phases, which do not exist in nature, or to control and design materials on an atomic scale. Namely, HVEM’s have developed to “Micro-Laboratory”, in which various material-treatments can be done, for natural science from powerful tools for characterization and/or identification of materials.l.The General Rule for Solid Amorphizat
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Liu, Chengjun, Jiyu Qiu, and Zhengyue Liu. "Phase Equilibria in the System CaO-SiO2-La2O3-Nb2O5 at 1400 °C." Metals 11, no. 12 (November 24, 2021): 1892. http://dx.doi.org/10.3390/met11121892.

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CaO-SiO2-La2O3-Nb2O5 system is of great significance for the pyrometallurgical utilization of Bayan Obo tailing resources. In the present work, the phase equilibrium of this quaternary system at 1400 °C was determined by a thermodynamic equilibrium experiment. On the basis of the recently determined CaO-La2O3-Nb2O5 phase diagram, some boundary surfaces of primary phase fields of CaO-SiO2-La2O3-Nb2O5 phase diagram were modified; then, the 1400 °C isothermal surface in the primary phase fields of SiO2, CaNb2O6, Ca2Nb2O7, and LaNbO4 was constructed, respectively. On this basis, CaO-SiO2-Nb2O5 pse
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Karim, Abdul M. A., and Arkan J. Hadi. "Thermodynamic Model for High Pressure Phase Behavior of Carbon Dioxide in Several Physical Solvents at Different Temperatures." Tikrit Journal of Engineering Sciences 15, no. 2 (June 30, 2008): 32–50. http://dx.doi.org/10.25130/tjes.15.2.03.

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In the present study a thermodynamic model for prediction of gas-liquid equilibrium at high pressures and different temperatures prepared for the binary systems of carbon dioxide (1) with each of the one of the liquid physical solvents (2) (sulfolane, n-methyl-2-pyrrolidone and propylene carbonate) using Peng-Robenson equation of state (PR-EOS) with different mixing rules to show the effect of the type of mixing rule used. Comparison of the experimental phase equilibrium data in the literature with the results of the model showed very good representation for some mixing rules and good for the
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IONIŢĂ, Mihaela, Sergiu SIMA, Martin CISMONDI, and Catinca SECUIANU. "Phase equilibria for the carbon dioxide + cyclopentane + cyclohexane system at high pressures." Revue Roumaine de Chimie 66, no. 3 (2021): 303–8. http://dx.doi.org/10.33224/rrch.2021.66.3.11.

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Isothermal vapor–liquid equilibrium measurements for the ternary mixture carbon dioxide + cyclopentane + cyclohexane at 353.15 K are reported. Phase equilibrium measurements were made in a high-pressure visual cell with variable volume using a static-analytical method with phases sampling by rapid online sample injectors (ROLSI) coupled to a gas chromatograph (GC) for analysis. The new measured data were modelled with the RK–PR equation of state (EoS) coupled with classical van der Waals (two-parameter conventional mixing rule, 2PCMR).
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Colin, Samuel, and Antony Valentini. "Instability of quantum equilibrium in Bohm's dynamics." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 470, no. 2171 (November 8, 2014): 20140288. http://dx.doi.org/10.1098/rspa.2014.0288.

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We consider Bohm's second-order dynamics for arbitrary initial conditions in phase space. In principle, Bohm's dynamics allows for ‘extended’ non-equilibrium, with initial momenta not equal to the gradient of phase of the wave function (as well as initial positions whose distribution departs from the Born rule). We show that extended non-equilibrium does not relax in general and is in fact unstable. This is in sharp contrast with de Broglie's first-order dynamics, for which non-standard momenta are not allowed and which shows an efficient relaxation to the Born rule for positions. On this basi
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DU, P. C., and G. A. MANSOORI. "PHASE EQUILIBRIUM OF MULTICOMPONENT MIXTURES: CONTINUOUS MIXTURE GIBBS FREE ENERGY MINIMIZATION AND PHASE RULE." Chemical Engineering Communications 54, no. 1-6 (May 1987): 139–48. http://dx.doi.org/10.1080/00986448708911903.

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Toikka, Alexander, and Maria Toikka. "Solubility and critical phenomena in reactive liquid–liquid systems." Pure and Applied Chemistry 81, no. 9 (August 19, 2009): 1591–602. http://dx.doi.org/10.1351/pac-con-08-11-04.

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The goal of this work is to consider solubility phenomena in reactive fluid mixtures with liquid-phase splitting. One of the main tasks is to analyze peculiarities of liquid–liquid (LL) systems with equilibrium and nonequilibrium chemical reaction. The special aim is to consider the critical states in these systems. The reactive liquid–liquid equilibrium (LLE) is treated on the base of phase rule. The topology of diagrams of reactive LLE is discussed for some types of binary and ternary systems. Examples are presented of a possible transformation of phase diagrams caused by the shifting of che
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Tesi sul tema "Phase rule and equilibrium"

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Chu, Jennifer Hsing-chung. "Phase behavior and binary interaction energies of copolymer blends /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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Sankarasubramanian, R. "Symmetry-Breaking Transitions In Equilibrium Shapes Of Coherent Precipitates." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/191.

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We present a general approach for determining the equilibrium shape of isolated, coherent, misfitting particles by minimizing the sum of elastic and interfacial energies using a synthesis of finite element and optimization techniques. The generality derives from the fact that there is no restriction on the initial or final shape, or on the elastic moduli of the particle and matrix, or on the nature of misfit. The particle shape is parameterized using a set of design variables which are the magnitudes of vectors from a reference point inside the particle to points on the particle/matrix interfa
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Sankarasubramanian, R. "Symmetry-Breaking Transitions In Equilibrium Shapes Of Coherent Precipitates." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/191.

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We present a general approach for determining the equilibrium shape of isolated, coherent, misfitting particles by minimizing the sum of elastic and interfacial energies using a synthesis of finite element and optimization techniques. The generality derives from the fact that there is no restriction on the initial or final shape, or on the elastic moduli of the particle and matrix, or on the nature of misfit. The particle shape is parameterized using a set of design variables which are the magnitudes of vectors from a reference point inside the particle to points on the particle/matrix interfa
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Billman, John Frederick. "Structure and phase behavior in microemulsions /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/9825.

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Maeda, Nobuo. "Phase transitions of long-chain n-alkanes at interfaces." View thesis entry in Australian Digital Theses Program, 2001. http://thesis.anu.edu.au/public/adt-ANU20011203.151921/index.html.

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Hong, Seung-pyo. "Role of hydrocarbon structures in gas solvent + hydrocarbon multiphase equilibria /." Access abstract and link to full text, 1992. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/9303400.

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Variankaval, Narayan. "Structure and thermodynamics of associating solutions : prediction of phase equilibria." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/8304.

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Bhansali, Anil P. "Heat transfer resulting from a turbulent, submerged jet impinging on a phase change material." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/19568.

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Bush, David Martin. "Phase equilibria of solid-supercritical carbon dioxide solutions." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/12075.

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Smith, Richard Lee Jr. "Measurement and correlation of critical states." Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/10099.

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Libri sul tema "Phase rule and equilibrium"

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S, Roth Robert, Vanderah Terrell A, American Ceramic Society, and National Institute of Standards and Technology., eds. Phase equilibria diagrams. Westerville, Ohio: American Ceramic Society, 2005.

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S, Roth Robert, American Ceramic Society, and National Institute of Standards and Technology, eds. Phase equilibria diagrams. Westerville, Ohio: American Ceramic Society, 2001.

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Chu-kun, Kuo. High temperature phase equilibria and phase diagrams. Oxford [England): Pergamon Press, 1990.

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Ahmed, Tarek H. Hydrocarbon phase behavior. Houston: Gulf Pub. Co., 1989.

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Engels, Hans. Phase equilibria and phase diagrams of electrolytes. Frankfurt/Main: DECHEMA, 1990.

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Kociński, Jerzy. Commensurate and incommensurate phase transitions. Amsterdam: Elsevier, 1990.

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Ehlers, Timothy P. Polymer phase behavior. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Ghose, S. Structural and Magnetic Phase Transitions in Minerals. New York, NY: Springer New York, 1988.

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N, Romanenko V., ed. Raschet fazovykh ravnovesiĭ v mnogokomponentnykh sistemakh. Moskva: "Metallurgii͡a︡", 1987.

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Petrov, D. A. Dvoĭnye i troĭnye sistemy. 2nd ed. Moskva: "Metallurgii͡a︡", 1986.

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Capitoli di libri sul tema "Phase rule and equilibrium"

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Zaidi, Sheza. "Phase Equilibria: The Phase Rule." In Phase Rule and its applications, 1–12. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003297949-1.

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McHale, Anna E. "The Phase Rule and Heterogeneous Equilibria." In Phase Diagrams and Ceramic Processes, 63–69. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-010-9605-8_5.

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McHale, Anna E. "The Phase Rule and Heterogeneous Equilibria." In Phase Diagrams and Ceramic Processes, 63–69. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-6173-3_5.

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Richet, Pascal. "Phase Rule and Simple Univariant Equilibria." In The Physical Basis of Thermodynamics, 197–214. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1237-0_9.

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Blankschtein, Daniel. "Criteria of Phase Equilibria, and the Gibbs Phase Rule." In Lectures in Classical Thermodynamics with an Introduction to Statistical Mechanics, 281–89. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49198-7_27.

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Liu, Zi-Kui, and John Ågren. "Thermodynamics of Constrained and Unconstrained Equilibrium Systems and Their Phase Rules." In Zentropy, 349–62. New York: Jenny Stanford Publishing, 2024. http://dx.doi.org/10.1201/9781032692401-6.

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Raal, J. David, and Andreas L. Mühlbauer. "The Modern Direct Method and Novel Eos Mixing Rules for Hpvle Computation." In Phase Equilibria, 409–36. Boca Raton: Routledge, 2023. http://dx.doi.org/10.1201/9780203743621-21.

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Carreón-Calderón, Bernardo, Verónica Uribe-Vargas, and Juan Pablo Aguayo. "Phase Equilibrium." In Thermophysical Properties of Heavy Petroleum Fluids, 177–271. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58831-1_6.

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Romano, Antonio, and Addolorata Marasco. "Phase Equilibrium." In Continuum Mechanics, 113–32. Boston: Birkhäuser Boston, 2010. http://dx.doi.org/10.1007/978-0-8176-4870-1_4.

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Gooch, Jan W. "Phase Equilibrium." In Encyclopedic Dictionary of Polymers, 529. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8625.

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Atti di convegni sul tema "Phase rule and equilibrium"

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Tavakolifaradonbe, Javad, Sumudu Karunarathne, and Knut Vågsæther. "Evaluating the acceptability and accuracy of Phasepy as a Phyton framework to calculate the interfacial properties and phase equilibrium." In 63rd International Conference of Scandinavian Simulation Society, SIMS 2022, Trondheim, Norway, September 20-21, 2022. Linköping University Electronic Press, 2022. http://dx.doi.org/10.3384/ecp192028.

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Phasepy is a scientifically defined open-source package in python for computational thermodynamics. Phasepy indeed calculates the interfacial properties and fluid phases equilibrium using an equation of state. In addition, Phasepy enables the scientists to optimize the relevant parameters to the equilibrium of multicomponent vapor-liquid, liquid-liquid, or vapor-liquid-liquid mixtures. The Phasepy can model the equilibrium in the continuous approach (combining a cubic equation of state and a mixing rule) or the discontinuous approach (using a virial equation and an activity coefficient model).
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Sun, Ziting, and Huazhou Li. "Phase Behavior Modeling for Carbon Dioxide/Brine Mixtures Using PR EOS and Huron-Vidal Mixing Rule." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-80010.

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Abstract Accurately predicting CO2 solubility in saline aquifers is very important for CO2 capture and storage. A reliable and accurate thermodynamic model is needed to predict the phase equilibrium of the CO2+brine systems over a wide range of temperature, pressure, and molality. In this study, a cubic-EOS-based thermodynamic model is presented to predict the phase equilibrium of CO2+brine mixtures. Peng-Robinson equation of state and Huron-Vidal mixing rule are applied to predict the phase behavior of CO2+brine systems containing salt species including NaCl, KCl, CaCl2, and MgCl2. Binary int
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Eniolorunda, Oluwakemi Victoria, Antonin Chapoy, and Rod Burgass. "Solid-Fluid Phase Equilibria Measurement for Mixtures of Methane, Carbon-Dioxide and N-Hexadecane." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/208245-ms.

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Abstract In this study, new experimental data using a reliable approach are reported for solid-fluid phase equilibrium of ternary mixtures of Methane-Carbon-dioxide- n-Hexadecane for 30-73 mol% CO2 and pressures up to 24 MPa. The effect of varying CO2 composition on the overall phase transition of the systems were investigated. Three thermodynamic models were used to predict the liquid phase fugacity, this includes the Peng Robison equation of state (PR-EoS), Soave Redlich-Kwong equation of state (SRK-EoS) and the Cubic plus Association (CPA) equation of state with the classical mixing rule an
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Zhang, Hao, and Yanhua Yang. "A Two-Phase Flow Computation Code Based on Two-Fluid Seven-Equation Model." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-92367.

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Abstract The present work is developing a computation code based on two-fluid seven-equation model. This model is fully non-equilibrium. It not only assumes two phases are mechanical and thermal non-equilibrium, but also it assumes the pressure is non-equilibrium. The governing equations include seven partial differential equations, which are two continuity equations, two momentum equations, two energy equations, and one volume fraction evolution equation. The computation framework is based on split scheme, including Godunov split and Strang split, and the problem is split into two independent
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Sirignano, William A., and Albert Jorda Juanos. "Analytical / Computational Approach to Liquid Spray Heating and Vaporization at Supercritical Pressures." In ILASS2017 - 28th European Conference on Liquid Atomization and Spray Systems. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/ilass2017.2017.4615.

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Our findings from two areas of background research will define an approach to the study of liquid spray heating andvaporization in gases at supercritical pressure: (i) vaporizing droplets at supercritical pressure and (ii) supercritical combustion in simple configurations, e.g., counterflow. The a priori conclusion that only one phase exists at super- critical pressure is based on false “lore” and not physical law. The question about the phases must be left open until the analysis reaches a conclusion; a proper approach will be defined. Proper equations of state for density and en- thalpy and
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Huang, Desheng, Yunlong Li, and Daoyong Yang. "Phase Behaviour and Physical Properties of Dimethyl Ether DME/CO2/Water/Heavy Oil Systems under Reservoir Conditions." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206171-ms.

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Abstract In this paper, techniques have been developed to quantify phase behaviour and physical properties including phase boundaries, swelling factors, and phase volumes for reservoir fluids containing polar components from both experimental and theoretical aspects. Experimentally, a total of five pressure-volume-temperature (PVT) experiments including three sets of DME/CO2/heavy oil systems and two sets of DME/CO2/water/heavy oil systems have been carried out to measure saturation pressures, phase volumes, and swelling factors by using a versatile PVT setup. Theoretically, the modified Peng-
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Jung, Jin-Young, and Michael M. Chen. "Numerical Simulation of Dendritic Solidification." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1481.

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Abstract It is well known that the dendritic microstructure of alloys is a consequence of morphological instability of the solidification process, which is a result of the coupling of heat and mass transfer with the composition-dependent phase equilibrium condition mediated by the surface energy. There have been many numerical simulations of dendritic solidification. However, many successful simulations of dendritic growth have used non-discrete front tracking method such as artificial source method or phase field method, with demonstrably first order accuracy. Many also found it necessary to
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Pakala, V. K. Chaitanya, and O. A. Plumb. "Heat Transfer at an Evaporating Front in Porous Media." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88240.

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Evaporating fronts propagate through porous media during drying processes, underground coal gasification, geothermal energy production from hot dry rock, and around nuclear waste repositories. Present work will focus on the one-dimensional heat transfer at the interface between vapor saturated porous matrix and water saturated porous region and evaluate the conditions for which various approximations yield an accurate representation of front velocity. An implicit finite difference scheme is utilized to simulate the propagation of an evaporating front in a porous medium saturated with water and
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Nikbakht, Ali, Alireza Fallahi Arezoodar, Mojtaba Sadighi, and Ali Tale Zadeh Lari. "Indentation of a Functionally Graded Plate by a Rigid Spherical Indenter in the Presence of a Semi-Elliptic Surface Crack." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82714.

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Graded materials, also known as functionally graded materials (FGMs), are multiphase composites mainly composed of a ceramic and a metal; thus, they exploit the heat, oxidation and corrosion resistance typical of ceramics, and the strength, ductility and toughness typical of metals. These materials are mainly used as heat barriers. In addition, many of the present and potential applications of FGMs involve contact problems. On the other hand, the production process of FGMs is somewhat complex and leaves some defects in the produced structure. One of the most important defects in such structure
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Sha, W., A. E. Paul, S. Patkar, and Arthur L. Smirl. "Excitation-Induced Phase Shifts of Heavy and Light Hole Quantum Beats in Multiple Quantum Wells." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.tud.24.

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In recent years, transient four-wave mixing (FWM) techniques have been used to investigate the dephasing times of non-equilibrium carriers in semiconductor heterostructures by monitoring the decay of the macroscopic polarization. Initially, this decay was measured by temporally-integrating the scattered FWM signal as a function of time delay between two (or more) pump pulses. More recently, the macroscopic polarization decay has been measured by time-resolving the FWM signal by cross correlating it with an ultrashort laser pulse via frequency up-conversion in a nonlinear crystal. When excitons
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Rapporti di organizzazioni sul tema "Phase rule and equilibrium"

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Mottola, E., F. M. Cooper, A. R. Bishop, S. Habib, Y. Kluger, and N. G. Jensen. Non-equilibrium phase transitions. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/307958.

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Froese, E. An outline of phase equilibrium. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2013. http://dx.doi.org/10.4095/292552.

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Evans, R. A., A. D. Saunders, and G. G. Worley. Toxics Release Inventory Expansion Rule Phase 3 (TRI-P3). Office of Scientific and Technical Information (OSTI), September 1998. http://dx.doi.org/10.2172/1839.

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Deymier, P. A. Grain boundary phase equilibrium in metallic systems. Office of Scientific and Technical Information (OSTI), April 1991. http://dx.doi.org/10.2172/5836281.

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Karwat, H., and Y. Q. Ruan. Entropy analysis on non-equilibrium two-phase flow models. Office of Scientific and Technical Information (OSTI), September 1995. http://dx.doi.org/10.2172/106993.

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Kincaid, J. Theoretical studies of multicomponent mixtures: Phase equilibrium and transport. Office of Scientific and Technical Information (OSTI), May 1990. http://dx.doi.org/10.2172/6883357.

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7

Glandt, E. Thermodynamics of systems with very many components phase equilibrium. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/7167377.

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8

Liu, Jing, Channing Arndt, and Thomas Hertel. Parameter Estimation and Measures of Fit in A Global, General Equilibrium Model. GTAP Working Paper, March 2003. http://dx.doi.org/10.21642/gtap.wp24.

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Abstract (sommario):
Computable General Equilibrium (CGE) models have been widely used for quantitative analysis of global economic issues. However, CGE models are frequently criticized for resting on weak empirical foundations. This paper builds on recent work in macro-econometric estimation, developing an approach to parameter estimation for a widely employed global CGE model, the Global Trade Analysis Project (GTAP) model. An approximate likelihood function is developed and the set of optimum elasticity values is obtained by maximizing this approximate likelihood function in the context of a back casting exerci
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9

Robinson, R. L. Jr, K. A. M. Gasem, N. A. Darwish, and A. M. Raff. Phase equilibrium data for development of correlations for coal fluids. Office of Scientific and Technical Information (OSTI), February 1991. http://dx.doi.org/10.2172/6089730.

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10

Robinson, R. L. Jr. Phase equilibrium data for development of correlations for coal fluids. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6506233.

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