2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/64090We consider a family of non-autonomous reaction-diffusion equations with almost periodic, rapidly oscillating principal part and nonlinear interactions. As the frequency of the oscillations tends to infinity, we prove that the solutions of the non-autonomous equations converge to the solutions of the autonomous averaged equation. If the nonlinearity is dissipative, we prove existence of compact attractors and their upper-semicontinuity at infinity.31 pages; to appear on "Topological Methods in Nonlinear Analysis"; references addedAnalysis of PDEsDynamical Systems34G20; 35Q30; 35L70text