  We calculate the initial non-equilibrium conditions from perturbative QCD
(pQCD) within Glauber multiple scattering theory for $\sqrt s =200$ AGeV and
$\sqrt s =5.5$ ATeV. At the soon available collider energies one will
particularly test the small $x$ region of the parton distributions entering the
cross sections. Therefore shadowing effects, previously more or less
unimportant, will lead to new effects on variables such as particle
multiplicities $dN/dy$, transverse energy production $d\bar{E}_T/dy$, and the
initial temperature $T_i$. In this paper we will have a closer look on the
effects of shadowing by employing different parametrizations for the shadowing
effect for valence quarks, sea quarks and gluons. Since the cross sections at
midrapidity are dominated by processes involving gluons the amount of their
depletion is particularly important. We will therefore have a closer look on
the results for $dN/dy$, $d\bar{E}_T/dy$, and $T_i$ by using two different
gluon shadowing ratios, differing strongly in size. As a matter of fact, the
calculated quantities differ significantly.
