Results 71 to 80 of about 85,294 (176)

The dynamo bifurcation in rotating spherical shells

open access: yes, 2009
We investigate the nature of the dynamo bifurcation in a configuration applicable to the Earth's liquid outer core, i.e. in a rotating spherical shell with thermally driven motions.
Dormy, Emmanuel, Morin, Vincent
core   +2 more sources

Refined Asymptotics for the subcritical Keller-Segel system and Related Functional Inequalities [PDF]

open access: yes, 2010
We analyze the rate of convergence towards self-similarity for the subcritical Keller-Segel system in the radially symmetric two-dimensional case and in the corresponding one-dimensional case for logarithmic interaction.
Calvez, Vincent, Carrillo, José Antonio
core   +4 more sources

Vacuum polarization of charged massless fermions in Coulomb and Aharonov--Bohm fields

open access: yes, 2015
Vacuum polarization of charged massless fermions is investigated in the superposition of Coulomb and Aharonov--Bohm (AB) potentials in 2+1 dimensions. For this purpose we construct the Green function of the two-dimensional Dirac equation with Coulomb and
Khalilov, V. R., Mamsurov, I. V.
core   +1 more source

A sign-changing solution for a superlinear Dirichlet problem, II

open access: yesElectronic Journal of Differential Equations, 2003
In previous work by Castro, Cossio, and Neuberger cite{ccn}, it was shown that a superlinear Dirichlet problem has at least three nontrivial solutions when the derivative of the nonlinearity at zero is less than the first eigenvalue of $-Delta$ with zero
Alfonso Castro   +2 more
doaj  

Subcritical Fourier uncertainty principles

open access: yes
It is well known that if a function $f$ satisfies $$\|f(x) e^{πα|x|^2}\|_p + \| \widehat{f}(ξ) e^{πα|ξ|^2} \|_q<\infty \qquad\qquad\qquad(*)$$ with $α=1$ and $1\le p,q<\infty$, then $f\equiv 0.$ We prove that if $f$ satisfies $(*)$ with some $0<α<1$ and $1\le p,q\leq \infty$, then $$ |f(y)|\le C (1+|y|)^{\frac{d}{p}} e^{- πα|y|^2 ...
Saucedo, Miquel, Tikhonov, Sergey
openaire   +2 more sources

Probing the thermal character of analogue Hawking radiation for shallow water waves?

open access: yes, 2014
We study and numerically compute the scattering coefficients of shallow water waves blocked by a stationary counterflow. When the flow is transcritical, the coefficients closely follow Hawking's prediction according to which black holes should emit a ...
Michel, Florent, Parentani, Renaud
core   +1 more source

Chiral phosphoric acid-catalyzed asymmetric synthesis of helically chiral, planarly chiral and inherently chiral molecules

open access: yesBeilstein Journal of Organic Chemistry
Chiral molecules, distinguished by nonsuperimposability with their mirror image, play crucial roles across diverse research fields. Molecular chirality is conventionally categorized into the following types: central chirality, axial chirality, planar ...
Wei Liu, Xiaoyu Yang
doaj   +1 more source

Subcritical water mediated fenton and fenton like degradation of wastewater containing antibiotics

open access: yesNext Materials
The issue of antibiotic residue causing environmental contamination must be addressed with urgency and seriousness. The present study used a heterogeneous Fenton-subcritical water process to degrade synthetic liquid waste containing a mixture of ...
Maria Natasya Inocentia Laban   +8 more
doaj   +1 more source

SWASHES: a compilation of Shallow Water Analytic Solutions for Hydraulic and Environmental Studies

open access: yes, 2013
Numerous codes are being developed to solve Shallow Water equations. Because there are used in hydraulic and environmental studies, their capability to simulate properly flow dynamics is critical to guarantee infrastructure and human safety.
Audusse   +46 more
core   +3 more sources

Largest cluster in subcritical percolation [PDF]

open access: yesPhysical Review E, 2000
16 pages, 5 figs, expanded version to appear in Phys Rev ...
openaire   +3 more sources

Home - About - Disclaimer - Privacy