Results 111 to 120 of about 267,847 (164)

Front Propagation in Heterogeneous Media

SIAM Review, 2000
In the article, the author presents a review of recent results on front propagation in reaction-diffusion-advection equations in homogeneous and heterogeneous media. Beginning with the well-studied scalar homogeneous reaction-diffusion equations, the author exposes the basic properties of front solution, such as front existence and stability, front ...
Jack Xin
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Reconstruction of random heterogeneous media

Journal of Microscopy, 2015
SUMMARYStochastic reconstruction is a technique to generate samples of random structures with prescribed distributional properties in the sense that certain of their statistical summary characteristics match target values or forms. This technique can be used to produce structures of any wanted size for further statistical analysis starting from small ...
F, Ballani, D, Stoyan
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Chemical Waves in Heterogeneous Media

The Journal of Physical Chemistry A, 2014
Formation of precipitation patterns and wave propagation in excitable media have attracted considerable scientific interest in the context of nonlinear chemical kinetics because of a new approach to micro and nanofabrication, in addition to some biological aspects. All precipitation patterns share common morphological characteristics, namely the formed
Mahmoud M, Ayass, Mazen, Al-Ghoul, István, Lagzi   +2 more
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Surface Waves in Laterally Heterogeneous Media

Journal of Engineering Mechanics, 2013
AbstractSurface wave methods exploit the dispersive properties of Rayleigh and Love waves to estimate the shear wave velocity profiles in vertically heterogeneous subsurfaces. Typically, they rely on a simplified one-dimensional (1D) analytical forward model where the lateral variation of the layer thickness is neglected and so is the fraction of the ...
BIGNARDI, Samuel, F. Fedele, SANTARATO, Giovanni, A. J. Yezzi, G. J. Rix   +4 more
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Generalized Approach to Heterogeneous Media

Transport in Porous Media, 1995
This paper is devoted to the description of a generalized approach developed for over-coming the fundamental difficulties that occur when the phenomenological field theory is extended from homogeneous to heterogeneous media. The origin of these difficulties lies in the kinematics of heterogeneous media where different constituents have in general ...
P. Jouanna, M.-A. Abellan
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Diffusion in Heterogeneous Media

Journal of Heat Transfer, 1982
Heat or mass diffusion problems of finite heterogeneous media are characterized by a set of partial differential equations for temperatures or mass concentrations, Tk (x, t), (k = 1, 2, . . . , n), in every point in space, which are coupled through source-sink terms in the equations.
M. D. Mikhailov, M. N. O¨¸zisik, B. K. Shishedjiev   +2 more
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Heterogeneous recording media

SPIE Proceedings, 1991
The paper summarizes the results of investigations performed to obtain deep 3-D holograms with 102 i0 mkm physical thickness allowing the postexposure amplification and the a posteriori changing of the grating parameters. This aim has been achieved by developing heterogeneous systems on the basis of porous glass with light-sensitive compositions ...
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HETEROGENEOUS PACEMAKERS IN OSCILLATORY MEDIA

2004
We discuss analytical and numerical results related to target patterns produced by heterogeneous pacemakers in oscillatory reaction-diffusion systems. The model consists of a complex Ginzburg-Landau equation where the oscillation frequency is space-dependent. Analytical calculations are performed in the framework of the phase dynamics approximation. We
Stich, M., Mikhailov, A.
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RAFT mediated polymerisation in heterogeneous media

Soft Matter, 2006
Reversible addition fragmentation chain transfer (RAFT) mediated polymerisation is one of a number of living radical polymerisation processes that were developed over the last decade. The RAFT process is facilitating the synthesis of controlled macromolecular architectures radical polymerisation in homogeneous and heterogeneous media.
McLeary JB, Klumperman B
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THERMOMECHANICS OF HETEROGENEOUS MEDIA

Journal of Thermal Stresses, 1997
This is a brief survey of some recently developed micromechanical modeling methods and certain results concerning the overall thermomechanical response and average local fields in both elastic and inelastic composite materials with extensions to laminated plates.
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