Results 21 to 30 of about 121,703 (314)

Rényi Entropy in Statistical Mechanics

open access: yesEntropy, 2022
Rényi entropy was originally introduced in the field of information theory as a parametric relaxation of Shannon (in physics, Boltzmann–Gibbs) entropy. This has also fuelled different attempts to generalise statistical mechanics, although mostly skipping
Jesús Fuentes, Jorge Gonçalves
doaj   +1 more source

Implicit Type Constitutive Relations for Elastic Solids and Their Use in the Development of Mathematical Models for Viscoelastic Fluids

open access: yesFluids, 2021
Viscoelastic fluids are non-Newtonian fluids that exhibit both “viscous” and “elastic” characteristics in virtue of the mechanisms used to store energy and produce entropy.
Vít Průša, K. R. Rajagopal
doaj   +1 more source

Semiclassical Casimir Energies at Finite Temperature [PDF]

open access: yes, 2000
We study the dependence on the temperature T of Casimir effects for a range of systems, and in particular for a pair of ideal parallel conducting plates, separated by a vacuum. We study the Helmholtz free energy, combining Matsubara's formalism, in which
A. Balian   +42 more
core   +2 more sources

Exploring the Interfacial Reaction of Nano Al/CuO Energetic Films through Thermal Analysis and Ab Initio Molecular Dynamics Simulation

open access: yesMolecules, 2022
The effect of the interface layer on energy release in nanoenergetic composite films is important and challenging for the utilization of energy. Nano Al/CuO composite films with different modulation periods were prepared by magnetron sputtering and ...
Anran Shi   +7 more
doaj   +1 more source

Finite-strain thermoelasticity based on multiplicative decomposition of deformation gradient [PDF]

open access: yesTheoretical and Applied Mechanics, 2002
The constitutive formulation of the finite-strain thermoelasticity is revisited within the thermodynamic framework and the multiplicative decomposition of the deformation gradient into its elastic and thermal parts.
Vujošević L., Lubarda V.A.
doaj   +1 more source

Some Thermodynamic Aspects of Black Holes and Singularities [PDF]

open access: yes, 1996
We review and correct the classical critical exponents characterizing the transition from negative to positive black hole's heat capacity at high charge--angular momentum.
Lousto, C. O.
core   +2 more sources

Helmholtz free energies of atom pair interactions in proteins

open access: yesFolding and Design, 1996
Proteins fold to unique three-dimensional structures, but how they achieve this transition and how they maintain their native folds is controversial. Information on the functional form of molecular interactions is required to address these issues. The basic building blocks are the free energies of atom pair interactions in dense protein solvent systems.
Sippl, Manfred J   +4 more
openaire   +2 more sources

THERMODYNAMIC PROPERTIES OF ROCK-FORMING OXIDES, α-Al2O3, Cr2O3, α-Fe2O3, AND Fe3O4 AT HIGH TEMPERATURES AND PRESSURES

open access: yesГеодинамика и тектонофизика, 2016
Equations of state of corundum (α-Al2O3), eskolaite (Cr2O3), hematite (α-Fe2O3), and magnetite (Fe3O4) are constructed based on the Helmholtz free energy by simultaneous optimization of ultrasonic, X-ray diffraction, dilatometric, and thermochemical ...
P. I. Dorogokupets   +3 more
doaj   +1 more source

Superstatistics of Schrödinger equation with pseudo-harmonic potential in external magnetic and Aharanov-Bohm fields

open access: yesHeliyon, 2020
In this work, the thermodynamic properties of pseudo-harmonic potential in the presence of external magnetic and Aharanov-Bohm fields are investigated. The effective Boltzmann factor in the superstatistics formalism was used to obtain the thermodynamic ...
A.N. Ikot   +7 more
doaj   +1 more source

Adsorption in Slit Pores and Pore-Size Distribution: A Molecular Layer Structure

open access: yesAdsorption Science & Technology, 2006
Anew approach is developed to analyze the thermodynamic properties of a sub-critical fluid adsorbed in a slit pore of activated carbon. The approach is based on a representation that an adsorbed fluid forms an ordered structure close to a smoothed solid ...
E.A. Ustinov, D.D. Do
doaj   +1 more source

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