Results 11 to 20 of about 802 (66)

Necrotic tumor growth: an analytic approach

open access: yes, 2012
The present paper deals with a free boundary problem modeling the growth process of necrotic multi-layer tumors. We prove the existence of flat stationary solutions and determine the linearization of our model at such an equilibrium.
A Friedman   +14 more
core   +1 more source

An Energetic Variational Approach for ion transport

open access: yes, 2014
The transport and distribution of charged particles are crucial in the study of many physical and biological problems. In this paper, we employ an Energy Variational Approach to derive the coupled Poisson-Nernst-Planck-Navier-Stokes system.
Liu, Chun, Sheng, Ping, Xu, Shixin
core   +2 more sources

Global-in-time behavior of the solution to a Gierer-Meinhardt system [PDF]

open access: yes, 2012
Gierer-Meinhardt system is a mathematical model to describe biological pattern formation due to activator and inhibitor. Turing pattern is expected in the presence of local self-enhancement and long-range inhibition.
Karali, Georgia D   +2 more
core  

Boundedness and exponential convergence of a chemotaxis model for tumor invasion

open access: yes, 2016
We revisit the following chemotaxis system modeling tumor invasion \begin{equation*} \begin{cases} u_t=\Delta u-\nabla \cdot(u\nabla v),& x\in\Omega, t>0,\\ v_t=\Delta v+wz,& x\in\Omega, t>0,\\ w_t=-wz,& x\in\Omega, t>0,\\ z_t=\Delta z-z+u, & x\in\Omega,
Jin, Haiyang, Xiang, Tian
core   +1 more source

Phase Transitions for the Brusselator Model

open access: yes, 2010
Dynamic phase transitions of the Brusselator model is carefully analyzed, leading to a rigorous characterization of the types and structure of the phase transitions of the model from basic homogeneous states.
Ma T., Ma T., Shouhong Wang, Tian Ma
core   +1 more source

Boundedness in a fully parabolic chemotaxis system with nonlinear diffusion and sensitivity, and logistic source

open access: yes, 2017
In this paper we study the zero-flux chemotaxis-system \begin{equation*} \begin{cases} u_{ t}=\nabla \cdot ((u+1)^{m-1} \nabla u-(u+1)^\alpha \chi(v)\nabla v) + ku-\mu u^2 & x\in \Omega, t>0, \\ v_{t} = \Delta v-vu & x\in \Omega, t>0,\\ \end{cases} \end ...
Amann   +34 more
core   +1 more source

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