Now showing items 1-10 of 13620
Solutions for a non-Markovian diffusion equation
(Elsevier Science BvAmsterdamHolanda, 2010)
A regularized nonlinear diffusion approach for texture image denoising
In this paper a new partial differential equation based method is presented with a view to denoising images having textures. The proposed model combines a nonlinear anisotropic diffusion filter with recent harmonic analysis ...
Diffusion phenomena of the oxygen and nitrogen in niobium by mechanical spectroscopy
The short-range diffusion phenomenon (Snoek Effect) was investigated by mechanical spectroscopy measurements between 300 K and 650 K, in a polycrystalline niobium sample, containing oxygen and nitrogen, using a torsion ...
Diffusion of Sn in different purity α-Ti
(Elsevier Science, 2003-05)
The diffusion of Sn in the hcp (α) phase of high purity (99.99%) and pure (99.9%) Ti was studied at different temperatures from 873 up to 1100 K. The Rutherford Backscattering Spectrometry (RBS) technique was used to obtain ...
MATHEMATICAL APPROACH OF DIFFUSION IN THE ELECTROCHEMICAL CONTEXT
(Soc Brasileira Quimica, 2016-04-01)
The aim of this study was to explain in detail the mathematical methods used to deal with diffusion equations, mainly for students and researchers interested in electrochemistry and related areas. Emphasis was placed on ...
A fully adaptive numerical approximation for a two-dimensional epidemic model with nonlinear cross-diffusion
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
SUFFICIENT CONDITIONS ON DIFFUSIVITY FOR THE EXISTENCE AND NONEXISTENCE OF STABLE EQUILIBRIA WITH NONLINEAR FLUX ON THE BOUNDARY
(TEXAS STATE UNIVSAN MARCOS, 2012)
A reaction-diffusion equation with variable diffusivity and non-linear flux boundary condition is considered. The goal is to give sufficient conditions on the diffusivity function for nonexistence and also for existence ...
Taylor dispersion technique for investigation of diffusion in liquids and its applications.
(Soc Brasileira QuimicaSao PauloBrasil, 1997)