Results 61 to 70 of about 3,703,082 (328)

Dispersive properties of gradient-dependent and rate-dependent media

Mechanics of Materials, 1994
The dispersive behaviour of waves propagating in gradient-dependent and rate-dependent media is investigated analytically and numerically. Attention is focused on the proper modelling of dynamic strain localisation and the crucial role that dispersion plays in this.
Sluys, L.J., Borst, de, R.
openaire   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Laplacian-level density functionals for the exchange-correlation energy of low-dimensional nanostructures

, 2010
In modeling low-dimensional electronic nanostructures, the evaluation of the electron-electron interaction is a challenging task. Here we present an accurate and practical density-functional approach to the two-dimensional many-electron problem.
Pittalis, S., Rasanen, E.
core   +1 more source

Gradient bounds for a thin film epitaxy equation [PDF]

, 2016
We consider a gradient flow modeling the epitaxial growth of thin films with slope selection. The surface height profile satisfies a nonlinear diffusion equation with biharmonic dissipation. We establish optimal local and global wellposedness for initial
Li, Dong, Qiao, Zhonghua, Tang, Tao
core   +1 more source

Semilinear Elliptic Systems with Dependence on the Gradient [PDF]

Mediterranean Journal of Mathematics, 2018
The authors prove existence and multiplicity results for radial solutions of semilinear elliptic systems with full gradient dependence that are subject to boundary values problems on an annulus. The approach relies on the fixed point index.
F. Cianciaruso, P. Pietramala
openaire   +3 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

On a Neumann Problem with an Intrinsic Operator

Axioms
This paper investigates the existence and location of solutions for a Neumann problem driven by a (p,q) Laplacian operator and with a reaction term that depends not only on the solution and its gradient but also incorporates an intrinsic operator, which ...
Dumitru Motreanu, Angela Sciammetta
doaj   +1 more source

Gradient estimates for nonlinear elliptic equations with a gradient-dependent nonlinearity [PDF]

Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 2019
AbstractIn this paper, we obtain gradient estimates of the positive solutions to weightedp-Laplacian type equations with a gradient-dependent nonlinearity of the form0.1$${\rm div }( \vert x \vert ^\sigma \vert \nabla u \vert ^{p-2}\nabla u) = \vert x \vert ^{-\tau }u^q \vert \nabla u \vert ^m\quad {\rm in}\;\Omega^*: = \Omega {\rm \setminus }\{ 0\} .$$
Ching, Joshua, Cîrstea, Florica C.
openaire   +3 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Analytical Solution of the O-X Mode Conversion Problem

, 2010
The excitation of a slow extraordinary wave in a overdense plasma from an ordinary wave impinging on the critical layer in the plane spanned by the density gradient and magnetic field is solved analytically by formulating the problem in terms of a ...
Abramowitz, Budden, Cairns, Francesco Volpe, Ginzburg, Gospodchikov, Hansen, Köhn, Laqua, Laqua, Laqua, Laqua, Maekawa, Mjølhus, Podoba, Popov, Popov, Preinhaelter, Shevchenko, Stix, Swanson, Volpe, Weitzner, Weitzner, Zwillinger, Zwillinger   +25 more
core   +1 more source