  We study the transport behavior induced by a small bias voltage through a
quantum dot connected to one-channel finite-size wires. We describe the quantum
dot by the Hubbard-Kondo which is solved by means of a quantum Monte Carlo
method. We investigate the effect of a magnetic field applied at the quantum
dot in the Kondo regime. We identify changes in the behavior of mesoscopic
oscillations introduced by the magnetic field that have an analogous behavior
to those observed as a function of the temperature.
