Results 41 to 50 of about 1,698,433 (359)

Braun-Le Chatelier principle in dissipative thermodynamics

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019
Braun-Le Chatelier principle is a fundamental result of equilibrium thermodynamics, showing how stable equilibrium states shift when external conditions are varied. The principle follows from convexity of a thermodynamic potential.
Michal Pavelka, Miroslav Grmela
doaj   +1 more source

THERMODYNAMIC PROPERTIES OF BARU FRUITS (Dipteryx alata Vogel) [PDF]

open access: yesEngenharia Agrícola, 2017
: The objective of this study was to determine and evaluate the thermodynamic properties for different equilibrium moisture contents in baru fruits (Dipteryx alata Vogel), using the direct static method to obtain the experimental data.
Osvaldo Resende   +3 more
doaj   +2 more sources

Thermodynamic extremal principle and its application to Dufour and Soret effects and plasticity

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2008
An extremal principle is formulated for thermodynamic systems near equilibrium subjected to various external conditions. It is shown that the principle describes unambiguously the kinetics of the thermodynamic system and replaces classical ...
Fischer, Franz Dieter   +2 more
doaj   +1 more source

Unique extension of the maximum entropy principle to phase coexistence in heat conduction

open access: yesPhysical Review Research, 2022
The maximum entropy principle determines the values of thermodynamic variables in thermally isolated equilibrium systems. This paper extends the principle to a variational principle that applies to liquid–gas coexistence in heat conduction.
Naoko Nakagawa, Shin-ichi Sasa
doaj   +1 more source

Geometry of Thermodynamic Processes [PDF]

open access: yes, 2018
Since the 1970s contact geometry has been recognized as an appropriate framework for the geometric formulation of the state properties of thermodynamic systems, without, however, addressing the formulation of non-equilibrium thermodynamic processes.
Maschke, Bernhard, van der Schaft, Arjan
core   +3 more sources

A Gibbs free energy minimization based model for liquid–liquid equilibrium calculation of a system containing oil, brine, and surfactant

open access: yesOil & Gas Science and Technology, 2020
Accurate and reliable phase equilibrium calculations of microemulsion systems are of great importance. This study deals with the thermodynamic modeling of Liquid–Liquid Equilibrium (LLE) of a system including oil (n-decane), brine (containing CaCl2 salt),
Hosseini Mostafa, Mohammadi Amir H.
doaj   +1 more source

Thermodynamic resources in continuous-variable quantum systems

open access: yesnpj Quantum Information, 2021
Thermodynamic resources, beyond their well-known usefulness in work extraction and other thermodynamic tasks, are often important also in tasks that are not evidently thermodynamic.
Varun Narasimhachar   +5 more
doaj   +1 more source

Phase transitions in geometrothermodynamics

open access: yes, 2010
Using the formalism of geometrothermodynamics, we investigate the geometric properties of the equilibrium manifold for diverse thermodynamic systems. Starting from Legendre invariant metrics of the phase manifold, we derive thermodynamic metrics for the ...
Alberto Sánchez   +26 more
core   +1 more source

The equilibrium landscape of the Heisenberg spin chain [PDF]

open access: yes, 2019
We characterise the equilibrium landscape, the entire manifold of local equilibrium states, of an interacting integrable quantum model. Focusing on the isotropic Heisenberg spin chain, we describe in full generality two complementary frameworks for ...
Ilievski, Enej, Quinn, Eoin
core   +3 more sources

The Stumbling Block of the Gibbs Entropy: the Reality of the Negative Absolute Temperatures

open access: yesEPJ Web of Conferences, 2016
The second Tisza-Callen postulate of equilibrium thermodynamics states that for any system there exists a function of the system extensive parameters, called entropy, defined for all equilibrium states and having the property that the values assumed by ...
Anghel Dragoş-Victor
doaj   +1 more source

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