  We consider adiabatic charge transport through an almost open quantum dot. We
show that the charge transmitted in one cycle is quantized in the limit of
vanishing temperature and one-electron mean level spacing in the dot. The
explicit analytic expression for the pumped charge at finite temperature is
obtained for spinless electrons. The pumped charge is produced by both
non-dissipative and dissipative currents. The latter are responsible for the
corrections to charge quantization which are expressed through the conductance
of the system.
