Results 31 to 40 of about 280,377 (325)

Optimizing Our Patients’ Entropy Production as Therapy? Hypotheses Originating from the Physics of Physiology

open access: yesEntropy, 2020
Understanding how nature drives entropy production offers novel insights regarding patient care. Whilst energy is always preserved and energy gradients irreversibly dissipate (thus producing entropy), increasing evidence suggests that they do so in the ...
Andrew J. E. Seely
doaj   +1 more source

A Relativistic Entropic Hamiltonian–Lagrangian Approach to the Entropy Production of Spiral Galaxies in Hyperbolic Spacetime

open access: yesUniverse, 2021
Double-spiral galaxies are common in the Universe. It is known that the logarithmic double spiral is a Maximum Entropy geometry in hyperbolic (flat) spacetime that well represents an idealised spiral galaxy, with its central supermassive black hole (SMBH)
Michael C. Parker, Chris Jeynes
doaj   +1 more source

Physicochemical attack against solid tumors based on the reversal of direction of entropy flow: an attempt to introduce thermodynamics in anticancer therapy

open access: yesDiagnostic Pathology, 2006
Background There are many differences between healthy tissue and growing tumor tissue, including metabolic, structural and thermodynamic differences. Both structural and thermodynamic differences can be used to follow the entropy differences in cancerous
Lv Xiaogui   +4 more
doaj   +1 more source

Geometrical aspects of entropy production in stochastic thermodynamics based on Wasserstein distance

open access: yesPhysical Review Research, 2021
We study a relationship between optimal transport theory and stochastic thermodynamics for the Fokker-Planck equation. We show that the lower bound on the entropy production is the action measured by the path length of the L^{2}-Wasserstein distance ...
Muka Nakazato, Sosuke Ito
doaj   +1 more source

Theoretical Analysis of Entropy Generation at the Blade Interface of a Tubular Turbine Under Cooperative Conditions

open access: yesFrontiers in Energy Research, 2021
To study the influence of the blade entropy production range on the efficiency of a tubular turbine under coassociated conditions, the renormalization group K–ε turbulence model was used to simulate the full flow passage of the tubular turbine based on ...
Zhenggui Li   +4 more
doaj   +1 more source

Generalization of Prigogine’s theorem for the case of full differential of entropy

open access: yesMethodsX, 2018
In this paper we propose a solution to the problem associated with the presence of an incomplete differential of entropy in Prigogine's theorem on the minimum of entropy production.
V.I. Shapovalov, N.V. Kazakov
doaj   +1 more source

Entropy Production in Exactly Solvable Systems

open access: yesEntropy, 2020
The rate of entropy production by a stochastic process quantifies how far it is from thermodynamic equilibrium. Equivalently, entropy production captures the degree to which global detailed balance and time-reversal symmetry are broken.
Luca Cocconi   +4 more
doaj   +1 more source

Path-dependent entropy production [PDF]

open access: yesJournal of the Korean Physical Society, 2015
A rigorous derivation of nonequilibrium entropy production via the path-integral formalism is presented. Entropy production is defined as the entropy change piled in a heat reservoir as a result of a nonequilibrium thermodynamic process. It is a central quantity by which various forms of the fluctuation theorem are obtained.
openaire   +2 more sources

Entropy production and fluctuation theorems in a continuously monitored optical cavity at zero temperature [PDF]

open access: yesQuantum, 2022
Fluctuation theorems allow one to make generalised statements about the behaviour of thermodynamic quantities in systems that are driven far from thermal equilibrium. In this article we use Crooks' fluctuation theorem to understand the entropy production
Michael J. Kewming, Sally Shrapnel
doaj   +1 more source

Entropy Production Via Particle Production [PDF]

open access: yes, 1995
I critically examine the notion of ``irreversibility,'' and discuss in what sense it applies to the spontaneous creation of particles in external fields. The investigation reveals that particle creation in very strong fields can only be described by a non-Markovian transport theory.
openaire   +2 more sources

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