Results 61 to 70 of about 2,288,990 (250)

Analysis of a reaction-diffusion system of ƛ -w type [PDF]

open access: yes, 2003
The author studies two coupled reaction-diffusion equations of 'ƛ - w' type, on an open, bounded, convex domain Ω C R(^d) (d ≤ 3), with a boundary of class C(^2), and homogeneous Neumann boundary conditions.
Garvie, Marcus Roland
core  

A finite difference scheme for a degenerated diffusion equation arising in microbial ecology

open access: yesElectronic Journal of Differential Equations, 2007
A finite difference scheme is presented for a density-dependent diffusion equation that arises in the mathematical modelling of bacterial biofilms. The peculiarity of the underlying model is that it shows degeneracy as the dependent variable vanishes ...
Hermann J. Eberl, Laurent Demaret
doaj  

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

open access: yesAdvanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz   +4 more
wiley   +1 more source

Nonlinear diffusion problems of mathematical biology.

open access: yes, 1989
Nonlinear diffusion problems of mathematical ...
Tor Anthony. Kwembe (7993043)
core   +4 more sources

Existence of scale invariant solutions to horizontal flow with a Fujita type diffusion coefficient

open access: yesElectronic Journal of Differential Equations, 2012
In this article, we study a boundary-initial value problem on the half-line for the diffusion equation with a Fujita type diffusion coefficient that carries a parameter $alpha $.
Gastao A. Braga   +2 more
doaj  

Group Classification and Symmetry Reduction of a (1+1)-Dimensional Porous Medium Equation

open access: yesAppliedMath
In this paper, we present Lie symmetry analysis of a generalized (1+1)-dimensional porous medium equation characterized by parameters m and d. Through group classification, we examine how these parameters influence the Lie symmetry structure of the ...
Polokwane Charles Makibelo   +2 more
doaj   +1 more source

Morphology, Transport, and Dynamics of Protein Adsorption in Open‐Cell Metal Foam

open access: yesAdvanced Engineering Materials, EarlyView.
Stainless steel (SS) open‐cell foams are shown to adsorb more protein per unit area than previously reported 316L SS and chromium oxide surfaces under static and flow conditions. An integrated approach combining 3D pore imaging, flow simulation, and protein adsorption experiments characterizes the foam’s performance.
Chinmaya Prerana Inguva   +2 more
wiley   +1 more source

Solutions to a nonlinear drift-diffusion model for semiconductors

open access: yesElectronic Journal of Differential Equations, 1999
A nonlinear drift-diffusion model for semiconductors is analyzed to show the existence of non-vacuum global solutions and stationary solutions. The long time behavior of the solutions is studied by establishing the existence of an absorbing set and a ...
Weifu Fang, Kazufumi Ito
doaj  

Adatom interaction effects in surface diffusion

open access: yesCondensed Matter Physics, 2013
Motivated by recent research of Nikitin et al. [J. Phys. D: Appl. Phys., 2009, 49, 055301], we examine the effects of interatomic interactions on adatom surface diffusion.
Yu.B. Gaididei   +3 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

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