Results 61 to 70 of about 282,648 (277)

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Diversity and Semiconvergents in Pythagorean Tuning

open access: yesAxioms
Several approaches to building generalized Pythagorean scales provide interpretation for the rational approximation of an irrational number. Generally, attention is paid to the convergents of the continued fraction expansions.
Rafael Cubarsi
doaj   +1 more source

Quantum ergosphere and brick wall entropy

open access: yesPhysics Letters B, 2019
We revisit the “brick wall” model for black hole entropy taking into account backreaction effects on the horizon structure. We do so by adopting an evaporating metric in the quasi-static approximation in which departures from the standard Schwarzschild ...
M. Arzano   +4 more
doaj   +1 more source

On Statistical Properties of Jizba-Arimitsu Hybrid Entropy

open access: yes, 2016
Jizba-Arimitsu entropy (also called hybrid entropy) combines axiomatics of R\'enyi and Tsallis entropy. It has many common properties with them, on the other hand, some aspects as e.g., MaxEnt distributions, are completely different from the former two ...
Korbel, Jan, Çankaya, Mehmet Niyazi
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

Entropy of -valued operators and diverse applications

open access: yesJournal of Inequalities and Applications, 2001
We investigate how the metric entropy of -valued operators influences the entropy behaviour of special operators, such as integral or matrix operators.
Edmunds David E, Carl Bernd
doaj  

Fourier-domain transfer entropy spectrum

open access: yesPhysical Review Research, 2021
We propose the Fourier-domain transfer entropy spectrum, a generalization of transfer entropy, as a model-free metric of causality. For arbitrary systems, this approach systematically quantifies the causality among their different system components ...
Yang Tian   +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

Entanglement entropy and Page curve of black holes with island in massive gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
By applying the island rule proposed recently, we compute the entanglement entropy of Hawking radiation and study the Page curve for the eternal black holes in massive gravity.
Cao H. Nam
doaj   +1 more source

A note on dimensional entropy for amenable group actions

open access: yes, 2017
In this short note, for countably infinite amenable group actions, we provide topological proofs for the following results: Bowen topological entropy (dimensional entropy) of the whole space equals the usual topological entropy along tempered F{\o}lner ...
Dou, Dou, Zhang, Ruifeng
core   +1 more source

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