[en] The aim of the first experiment at GANIL was to examine the variation of the N/Z ratio for projectile like fragments when the incident energy increases. Results presented bring confliding evidences. Some conclusions are drawn. The process pointed to by some of the results shown is examined in detail. The relative velocities of projectile and target at GANIL energies incompass the Fermi velocity. Already a few experiments which use the high energy and high intensity of the beam bring results dealing with the nuclear structure. Then results are reviewed