Results 11 to 20 of about 570,196 (180)

Boundary Entropy Can Increase Under Bulk RG Flow [PDF]

open access: yesNuclear Physics B, 2007
The boundary entropy log(g) of a critical one-dimensional quantum system (or two-dimensional conformal field theory) is known to decrease under renormalization group (RG) flow of the boundary theory.
Affleck   +44 more
core   +6 more sources

Axiomatic Foundations for the Principle of Entropy Increase [PDF]

open access: yesInternational Journal of Modern Physics E, 2007
We show that the principle of entropy increase may be exactly founded on a few axioms valid not only for quantum and classical statistics, but also for a wide range of statistical processes.Comment: 8 ...
Everett H., QI-REN ZHANG
core   +3 more sources

Increasing entropy for colloidal stabilization [PDF]

open access: yesScientific Reports, 2016
AbstractStability is of paramount importance in colloidal applications. Attraction between colloidal particles is believed to lead to particle aggregation and phase separation; hence, stability improvement can be achieved through either increasing repulsion or reducing attraction by modifying the fluid medium or by using additives.
Songping Mo   +3 more
openaire   +2 more sources

Meditation Increases the Entropy of Brain Oscillatory Activity [PDF]

open access: yesNeuroscience, 2020
We address the hypothesis that the entropy of neural dynamics indexes the intensity and quality of conscious content. Previous work established that serotonergic psychedelics can have a dysregulating effect on brain activity, leading to subjective effects that present a considerable overlap with the phenomenology of certain meditative states.
Martínez Vivot, Rocío   +4 more
openaire   +4 more sources

Fourth Order Diffusion Equations with Increasing Entropy [PDF]

open access: yesEntropy, 2012
The general quasi-linear autonomous fourth order diffusion equation ut = −[G(u)uxxx + h(u, ux, uxx)]x with positive variable diffusivity G(u) and lower-order flux component h is considered on the real line. A direct algorithm produces a general class of equations for which the Shannon entropy density obeys a reaction-diffusion equation with a positive
Tehseen, Naghmana., Broadbridge, Philip.
openaire   +3 more sources

Research of thermal performance of supercritical carbon dioxide in straight pipe casing

open access: yesJournal of Hebei University of Science and Technology, 2021
In order to solve the problems that the irreversible loss existing in the gas cooler has a great influence on its heat transfer performance,in order to improve the thermal performance of the straight tube tube-in-tube gas cooler,the heat transfer process
Haiting CUI   +3 more
doaj   +1 more source

The Concept of Entropy and Its Application in Thermal Engineering

open access: yesEnergies, 2021
Today, 156 years after the invention of entropy by Clausius, there remains disagreement among the scientific community on what entropy and the phenomenon of entropy increase mean [...]
Yousef Haseli
doaj   +1 more source

Trajectory versus probability density entropy [PDF]

open access: yes, 2000
We study the problem of entropy increase of the Bernoulli-shift map without recourse to the concept of trajectory and we discuss whether, and under which conditions if it does, the distribution density entropy coincides with the Kolmogorov-Sinai entropy,
A.K. Pattanayak   +39 more
core   +2 more sources

The entropy puzzle and the quark combination model [PDF]

open access: yes, 2010
We use two available methods, the Duhem-Gibbs relation and the entropy formula in terms of particle phase space distributions, to calculate the entropy in a quark combination model.
Feng-lan Shao   +5 more
core   +1 more source

Numerical Study on Entropy Generation of the Multi-Stage Centrifugal Pump

open access: yesEntropy, 2022
The energy loss of the multi-stage centrifugal pump was investigated by numerical analysis using the entropy generation method with the RNG k-ε turbulence model.
Baoxin Fan   +3 more
doaj   +1 more source

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