Rate of convergence of attractors for semilinear singularly perturbed   problems: scalar parabolic equations with localized large diffusion
  In this paper we study the asymptotic nonlinear dynamics of scalar semilinear parabolic problems reaction-diffusion type when the diffusion coefficient becomes large in a subregion which is interior to the domain. We obtain, under suitable assumptions, that the family of attractors behaves continuously and we exhibit the rate of convergence. An accurate description of localized large diffusion is necessary. 
Leonardo Pires and Alexandre Nolasco de Carvalho
math.AP