Results 81 to 90 of about 6,253,661 (292)

Regular charged black holes, quasilocal energy and energy conditions [PDF]

open access: yesInternational Journal of Modern Physics D, 2016
We revisit the relationship of inequality between the gravitational field energy and the Komar charge, both quantities evaluated at the event horizon, for static and spherically symmetric regular black hole solutions obtained with nonlinear electrodynamics. We found a way to characterize these regular black hole solutions by the energy conditions that
Balart, Leonardo, Peña, Francisco
openaire   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Generalized Finslerian Wormhole Models in f(R,T) Gravity

open access: yesParticles
This article explores wormhole solutions within the framework of Finsler geometry and the modified gravity theory. Modifications in gravitational theories, such as f(R,T) gravity, propose alternatives that potentially avoid the exotic requirements.
B. R. Yashwanth   +2 more
doaj   +1 more source

Effect of substitution on the superconducting phase of transition metal dichalcogenide Nb(Se $$_{x}$$ x S $$_{1-x}$$ 1 - x ) $$_{2}$$ 2 van der Waals layered structure

open access: yesScientific Reports, 2021
By means of first-principles cluster expansion, anisotropic superconductivity in the transition metal dichalcogenide Nb(Se $$_{x}$$ x S $$_{1-x}$$ 1 - x ) $$_{2}$$ 2 forming a van der Waals (vdW) layered structure is observed theoretically.
Prutthipong Tsuppayakorn-aek   +6 more
doaj   +1 more source

Diffractive Effects and General Boundary Conditions in Casimir Energy [PDF]

open access: yes, 2013
The effect of edges and apertures on the Casimir energy of an arrangement of plates and boundaries can be calculated in terms of an effective nonlocal lower-dimensional field theory that lives on the boundary.
Karabali, Dimitra, Nair, V. P.
core   +2 more sources

Energy Conditions for Hamiltonicity of Graphs [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2014
LetGbe an undirected simple graph of ordern. LetA(G)be the adjacency matrix ofG, and letμ1(G)≤μ2(G)≤⋯≤μn(G)be its eigenvalues. The energy ofGis defined asℰ(G)=∑i=1n‍|μi(G)|. Denote byGBPTa bipartite graph. In this paper, we establish the sufficient conditions forGhaving a Hamiltonian path or cycle or to be Hamilton-connected in terms of the energy of ...
Guidong Yu   +3 more
openaire   +2 more sources

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

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Energy conditions in mimetic-$f(R)$ gravity

open access: yes, 2017
The energy conditions of mimetic-$f(R)$ gravity theory is analyzed. We will obtain the parameter space of the theory in some special forms of $f(R)$ in which the self-acceleration is allowed.
Haghani, Zahra   +2 more
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

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