Results 21 to 30 of about 40,302 (263)

On Thermodynamics Problems in the Single-Phase-Lagging Heat Conduction Model

open access: yesEntropy, 2016
Thermodynamics problems for the single-phase-lagging (SPL) model have not been much studied. In this paper, the violation of the second law of thermodynamics by the SPL model is studied from two perspectives, which are the negative entropy production ...
Shu-Nan Li, Bing-Yang Cao
doaj   +1 more source

On the Thermodynamic Equilibrium in the Universe [PDF]

open access: yesProceedings of the National Academy of Sciences, 1928
With the establishing of the second law it was realized that all the actual processes on earth are irreversible and unidirectional in the sense of this law. The same is true for the solar system as the sun is radiating energy continually in an irreversible way.
openaire   +2 more sources

Thermodynamics of the viscous fluid from an observer's viewpoint

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013
The development of the non-equilibrium thermodynamics of the viscous fluid not using the local thermodynamic equilibrium hypothesis is considered. The theory is based on the causal mechanics of the heat conducting continuum, which includes the 1st law of
Mikhail Yur'evich Belevich
doaj   +1 more source

Local non-equilibrium thermodynamics. [PDF]

open access: yesSci Rep, 2015
AbstractLocal Shannon entropy lies at the heart of modern thermodynamics, with much discussion of trajectory-dependent entropy production. When taken at both boundaries of a process in phase space, it reproduces the second law of thermodynamics over a finite time interval for small scale systems.
Jinwoo L, Tanaka H.
europepmc   +5 more sources

Thermodynamics of Various Entropies in Specific Modified Gravity with Particle Creation

open access: yesAdvances in High Energy Physics, 2018
We consider the particle creation scenario in the dynamical Chern-Simons modified gravity in the presence of perfect fluid equation of state p=(γ-1)ρ. By assuming various modified entropies (Bekenstein entropy logarithmic entropy, power law correction ...
Abdul Jawad   +2 more
doaj   +1 more source

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

The Second Law Today: Using Maximum-Minimum Entropy Generation

open access: yesEntropy, 2015
There are a great number of thermodynamic schools, independent of each other, and without a powerful general approach, but with a split on non-equilibrium thermodynamics. In 1912, in relation to the stationary non-equilibrium states, Ehrenfest introduced
Umberto Lucia, Giuseppe Grazzini
doaj   +1 more source

Making Sense of Gravitational Thermodynamics

open access: yesPhilosophy of Physics
The use of statistical methods to model gravitational systems is crucial to physics practice, but yet the extent to which thermodynamics and statistical mechanics genuinely apply to these systems is a contentious issue.
Lorenzo Lorenzetti
doaj   +1 more source

Entropy Principle and Recent Results in Non-Equilibrium Theories

open access: yesEntropy, 2014
We present the state of the art on the modern mathematical methods of exploiting the entropy principle in thermomechanics of continuous media. A survey of recent results and conceptual discussions of this topic in some well-known non-equilibrium theories
Vito Antonio Cimmelli   +3 more
doaj   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

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