Results 91 to 100 of about 735,606 (326)

Possible generalized entropy convergence rates

open access: yes, 2013
We consider an isomorphism invariant for measure-preserving systems - types of generalized entropy convergence rates. We show the connections of this invariant with the types of Shannon entropy convergence rates. In the case when they differ we show several facts for aperiodic, completely ergodic and rank one systems. We use this concept to distinguish
openaire   +2 more sources

Entropy rate of chaos in an optically injected semiconductor laser for physical random number generation.

open access: yesOptics Express, 2021
We evaluate the (ɛ, τ) entropy of chaotic laser outputs generated by an optically injected semiconductor laser for physical random number generation. The vertical resolution ɛ and sampling time τ are numerically optimized by comparing the (ɛ, τ) entropy ...
Y. Kawaguchi   +3 more
semanticscholar   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

open access: yesFEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Analysis of Effect of Heat Pipe Parameters in Minimising the Entropy Generation Rate [PDF]

open access: yesJournal of Thermodynamics, 2016
Heat transfer and fluid flow in the heat pipe system result in thermodynamic irreversibility generating entropy. The minimum entropy generation principle can be used for optimum design of flat heat pipe. The objective of the present work is to minimise the total entropy generation rate as the objective function with different parameters of the flat ...
Rakesh Hari   +1 more
openaire   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

open access: yesMolecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon   +13 more
wiley   +1 more source

The thermodynamics of optical étendue

open access: yes, 2008
The concept of ´etendue is applied to the propagation of luminescent radiation, and to the transformation of such radiation in absorbing and luminescent media.
Markvart, T.
core   +1 more source

Optimization of Conical Micro-Diffusers and Micro-Nozzles Considering Entropy Generation [PDF]

open access: yes, 2016
Fluid flow characteristics and entropy generation in a circular diffuser/nozzle element are studied numerically. The flow is assumed to be isothermal, laminar and incompressible with constant thermo-physical properties. The velocity field, mass flow rate,
Ben-Mansour, Rached, Sahin, Ahmet Z.
core   +1 more source

Combined Effect of Buoyancy Force and Navier Slip on Entropy Generation in a Vertical Porous Channel

open access: yesEntropy, 2012
In this paper, we investigate the combined effects of buoyancy force and Navier slip on the entropy generation rate in a vertical porous channel with wall suction/injection.
Oluwole Daniel Makinde   +1 more
doaj   +1 more source

Quantum random number generation for 1.25 GHz quantum key distribution systems

open access: yes, 2015
Security proofs of quantum key distribution (QKD) systems usually assume that the users have access to source of perfect randomness. State-of-the-art QKD systems run at frequencies in the GHz range, requiring a sustained GHz rate of generation and ...
Houlmann, R.   +4 more
core   +2 more sources

Home - About - Disclaimer - Privacy