The evolution of the Oxygen abundance radial gradient in the Milky Way
  Galaxy disk
  We review the state of our chemical evolution models for spiral and low mass
galaxies. We analyze the consequences of using different stellar yields, infall
rate laws and star formation prescriptions in the time/redshift evolution of
the radial distributions of abundances, and other quantities as star formation
rate or gas densities, in the Milky Way Galaxy; In particular we will study the
evolution of the Oxygen abundance radial gradient analyzing its relation with
the ratio SFR/infall. We also compare the results with our old chemical
evolution models, cosmological simulations and with the existing data, mainly
with the planetary nebulae abundances.
