Results 41 to 50 of about 392,964 (284)

Generic points in systems of specification and Banach valued Birkhoff ergodic average

open access: yes, 2008
We prove that systems satisfying the specification property are saturated in the sense that the topological entropy of the set of generic points of any invariant measure is equal to the measure-theoretic entropy of the measure.
Fan, Ai-Hua   +2 more
core   +1 more source

Combined Effects of Pipe Diameter, Reynolds Number and Wall Heat Flux and on Flow, Heat Transfer and Second-Law Characteristics of Laminar-Transitional Micro-Pipe Flows

open access: yesEntropy, 2010
Fluid flow, heat transfer and entropy generation characteristics of micro-pipes are investigated computationally by considering the simultaneous effects of pipe diameter, wall heat flux and Reynolds number in detail.
A. Alper Ozalp
doaj   +1 more source

Entropy Numbers of Weighted Shifts

open access: yesJournal of Mathematical Analysis and Applications, 2001
A lower bound of the entropy numbers for powers of weighted shift operators on \(\ell_p\) space \((1\leq p\leq\infty)\) is established. As an application of proven results, the two operator ideals \(E^{(e)}_q(\ell_p,\ell_p)\) and \(S^{(s)}_q(\ell_p,\ell_p)\) are identical for \(q\in (0,\infty)\).
openaire   +2 more sources

Efficacy and Safety Analysis of Roxarestat in Regulating Renal Anemia in Patients on Maintenance Hemodialysis

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley   +1 more source

Large Alphabets and Incompressibility

open access: yes, 2006
We briefly survey some concepts related to empirical entropy -- normal numbers, de Bruijn sequences and Markov processes -- and investigate how well it approximates Kolmogorov complexity. Our results suggest $\ell$th-order empirical entropy stops being a
Becher   +21 more
core   +2 more sources

Second law of thermodynamics is ingrained within quantum mechanics

open access: yesResults in Physics, 2018
We show that the second law of thermodynamics is rooted in quantum mechanics, inasmuch as allowing the substitution of the Boltzmann constant k and temperature with respectively the Planck constant and quantum numbers. In particular, we will see that the
Tolga Yarman   +4 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Rotation intervals and entropy on attracting annular continua

open access: yes, 2017
We show that if $f$ is an annular homeomorphism admitting an attractor which is an irreducible annular continua with two different rotation numbers, then the entropy of $f$ is positive.
Passeggi, Alejandro   +2 more
core   +1 more source

Relations between Approximation Numbers and Entropy Numbers

open access: yesJournal of Approximation Theory, 1994
Replacing in the definition of the norm the triangle inequality by the inequality \(\| u+v\|\leq c(\| u\|+ \| v\|)\), \(c\geq 1\) fixed, one obtains the notion of quasi-norm and the corresponding notion of quasi-Banach space. The aim of this paper is to study the interrelations between approximation numbers and entropy numbers of compact operators ...
openaire   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

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