  The paper is devoted to the analysis of Fermi acceleration of protons in GRBs
and its neutrino signature. We have compared the consequences of Bohm scaling
and those of a Kolmogorov scaling, the latter being more reliable. The
predictions about the energy limitation of UHE-protons by the various losses
and the neutrino emissions turn out to be very sensitive to these scalings. We
consider Kolmogorov scaling as the most realistic and predict a reasonable
pp-neutrino emission around 100 GeV at the end of the radiative stage of the
fireball expansion, for a large number of GRBs pending on their baryonic load.
A second p$\gamma$-neutrino emission is expected with the acceleration of
protons in the radiation free stage, but with a synchrotron loss limitation
immediately followed by a severe expansion loss limitation. According to the
Kolmogorov scaling, the protons could not reach the UHE-range. Anyway the large
possibility of a two component neutrino emission would be an interesting clue
of cosmic ray physics.
