Results 31 to 40 of about 437,891 (285)

Fisher-KPP equations and applications to a model in medical sciences

open access: yesNetworks and Heterogeneous Media, 2018
This paper is devoted to a class of reaction-diffusion equations with nonlinearities depending on time modeling a cancerous process with chemotherapy. We begin by considering nonlinearities periodic in time.
Benjamin Contri
doaj   +1 more source

Topography driven spreading [PDF]

open access: yes, 2004
Roughening a hydrophobic surface enhances its nonwetting properties into superhydrophobicity. For liquids other than water, roughness can induce a complete rollup of a droplet.
A. M. Cazabat   +19 more
core   +1 more source

An extension of the formula for spreading speeds

open access: yesMathematical Biosciences and Engineering, 2010
A well-known formula for the spreading speed of a discrete-time recursion model is extended to a class of problems for which its validity was previously unknown. These include migration models with moderately fat tails or fat tails. Examples of such models are given.
Hans F. Weinberger, Xiao-Qiang Zhao
openaire   +3 more sources

Positive Stationary Solutions and Spreading Speeds of KPP Equations in Locally Spatially Inhomogeneous Media [PDF]

open access: yes, 2011
The current paper is concerned with positive stationary solutions and spatial spreading speeds of KPP type evolution equations with random or nonlocal or discrete dispersal in locally spatially inhomogeneous media. It is shown that such an equation has a
Kong, Liang, Shen, Wenxian
core   +1 more source

Dynamics of a time-periodic and delayed reaction-diffusion model with a quiescent stage

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, we study a time-periodic and delayed reaction-diffusion system with quiescent stage in both unbounded and bounded habitat domains. In unbounded habitat domain $\mathbb{R}$, we first prove the existence of the asymptotic spreading speed and
Shuang-Ming Wang, Liang Zhang
doaj   +1 more source

Bistable traveling wave solutions in a competitive recursion system with Ricker nonlinearity

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
Using an abstract scheme of monotone semiflows, the existence of bistable traveling wave solutions of a competitive recursion system is established. From the viewpoint of population dynamics, the bistable traveling wave solutions describe the strong ...
Shuxia Pan, Jie Liu
doaj   +1 more source

Varying the direction of propagation in reaction-diffusion equations in periodic media [PDF]

open access: yes, 2015
We consider a multidimensional reaction-diffusion equation of either ignition or monostable type, involving periodic heterogeneity, and analyze the dependence of the propagation phenomena on the direction.
Alfaro, Matthieu, Giletti, Thomas
core   +2 more sources

Dynamics of capillary spreading along hydrophilic microstripes [PDF]

open access: yes, 2001
We have studied the capillary spreading of a Newtonian liquid along hydrophilic microstripes that are chemically defined on a hydrophobic substrate. The front of the spreading film advances in time according to a power law x=Bt1/2.
Darhuber, Anton A.   +2 more
core   +1 more source

Spreading speeds and traveling waves for non-cooperative reaction-diffusion systems

open access: yes, 2010
Much has been studied on the spreading speed and traveling wave solutions for cooperative reaction-diffusion systems. In this paper, we shall establish the spreading speed for a large class of non-cooperative reaction-diffusion systems and characterize ...
Wang, Haiyan
core   +1 more source

Dynamic contact angle and three-phase contact line of water drop on copper surface [PDF]

open access: yes, 2015
Nowadays there is a lack of experimental data describing the physical process of drop spreading on a solid metal surface for developing wetting and spreading theory.
Batishcheva, K. A.   +2 more
core   +1 more source

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