RT Journal Article T1 On gradient estimates and other qualitative properties of solutions of nonlinear non autonomous parabolic systems A1 Díaz Díaz, Jesús Ildefonso A1 Antontsev, S.N. AB We prove several uniform L(1)-estimates on solutions of a general class of one-dimensional parabolic systems, mainly coupled in the diffusion term, which, in fact, can be of degenerate type. They are uniform in the sense that they don't depend on the coefficients, nor on the size of the spatial domain. The estimates concern the own Solution or/and its spatial gradient. This paper extends some previous results by the authors to the case of nonautonomous coefficients and possibly non homogeneous boundary conditions. Moreover, an application to the asymptotic decay of the L(1)-norm of solutions, as t -> +infinity, is also given. PB Real Academia Ciencias Exactas Físicas Y Naturales SN 1578-7303 YR 2009 FD 2009 LK https://hdl.handle.net/20.500.14352/49913 UL https://hdl.handle.net/20.500.14352/49913 LA eng NO Ministerio de Ciencia e Innovacion, Spain NO DGUIC of the CAM NO UCM DS Docta Complutense RD 25 ene 2026