Results 31 to 40 of about 1,443,184 (294)

A quantitative model for evaluating the impact of volatile oil non-equilibrium phase transition on degassing

open access: yesPetroleum Exploration and Development, 2012
To quantitatively evaluate the impact of non-equilibrium phase transition on degassing in an oil-gas system and accurately determine the bubble point pressure of the system with different oil rates, a model, which takes the influence of pressure drop and
Keliu WU   +6 more
doaj   +1 more source

Dynamic Phase Transition, Universality, and Finite-size Scaling in the Two-dimensional Kinetic Ising Model in an Oscillating Field

open access: yes, 2000
We study the two-dimensional kinetic Ising model below its equilibrium critical temperature, subject to a square-wave oscillating external field. We focus on the multi-droplet regime where the metastable phase decays through nucleation and growth of many
A. Aharoni   +64 more
core   +1 more source

Phase Transitions in Equilibrium and Non-Equilibrium Models on Some Topologies

open access: yesEntropy, 2016
On some regular and non-regular topologies, we studied the critical properties of models that present up-down symmetry, like the equilibrium Ising model and the nonequilibrium majority vote model. These are investigated on networks, like Apollonian (AN),
Francisco W. De Sousa Lima
doaj   +1 more source

Quasi-Critical Brain Dynamics on a Non-Equilibrium Widom Line

open access: yes, 2014
Is the brain really operating at a critical point? We study the non-equilibrium properties of a neural network which models the dynamics of the neocortex and argue for optimal quasi-critical dynamics on the Widom line where the correlation length is ...
Beggs, John M.   +3 more
core   +1 more source

Non-equilibrium topological phase transitions in two-dimensional optical lattices [PDF]

open access: yes, 2014
Recently, concepts of topological phases of matter are extended to non-equilibrium systems, especially periodically driven systems. In this paper, we construct an example which shows non-equilibrium topological phase transitions using ultracold fermions ...
Kawakami, Norio, Nakagawa, Masaya
core   +2 more sources

Application of near critical behavior of equilibrium ratios to phase equilibrium calculations

open access: yesOil & Gas Science and Technology, 2019
We examine the asymptotic behavior of the equilibrium ratios (Ki) near the convergence locus in the pressure-temperature plane. When the Equation of State (EoS) is analytical, which is the case of most EoS of engineering purpose, Ki tends towards unity ...
Nichita Dan Vladimir   +2 more
doaj   +1 more source

Phase equilibria among η-Fe2Al5 and its higher-ordered phases

open access: yesScience and Technology of Advanced Materials, 2021
Phase equilibria among the η-Fe2Al5 phase and its higher-ordered phases with the η framework structure were determined experimentally. The solubility range of the η phase at elevated temperature does not differ remarkably from that in previous studies ...
Tetsuya Hamada   +3 more
doaj   +1 more source

Phase Diagram for a 2-D Two-Temperature Diffusive XY Model [PDF]

open access: yes, 2010
Using Monte Carlo simulations, we determine the phase diagram of a diffusive two-temperature XY model. When the two temperatures are equal the system becomes the equilibrium XY model with the continuous Kosterlitz-Thouless (KT) vortex-antivortex ...
B. Schmittmann   +4 more
core   +2 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Continuous- and discrete-time Glauber dynamics. First- and second-order phase transitions in mean-field Potts models

open access: yes, 2013
As is known, at the Gibbs-Boltzmann equilibrium, the mean-field $q$-state Potts model with a ferromagnetic coupling has only a first order phase transition when $q\geq 3$, while there is no phase transition for an antiferromagnetic coupling.
Mukhamedov, F., Ostilli, M.
core   +1 more source

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