  Many nucleosynthesis and mixing processes of low-mass stars as they evolve
from the Main Sequence to the thermal-pulse Asymptotic Giant Branch phase
(TP-AGB) are well understood (although of course important physics components,
e.g. rotation, magnetic fields, gravity wave mixing, remain poorly known).
Nevertheless, in the last years presolar grain measurements with high
resolution have presented new puzzling problems and strong constraints on
nucleosynthesis processes in stars. The goal of the NuGrid collaboration is to
present uniform yields for a large range of masses and metallicities, including
low$-$mass stars and massive stars and their explosions. Here we present the
first calculations of stellar evolution and high-resolution, post-processing
simulations of an AGB star with an initial mass of 2 M_sun and solar-like
metallicity (Z=0.01), based on the post-processing code PPN. In particular, we
analyze the formation and evolution of the radiative 13C-pocket between the
17th TP and the 18th TP. The s-process nucleosynthesis profile of a sample of
heavy isotopes is also discussed, before the next convective TP occurrence.
