The invention relates to a device for reducing the noise emitted by a conduit belonging to an aircraft system that comprises an acoustic grid positioned in a segment of the conduit. More preferably, the plasma is generated by a filament 14 generated in the ultrashort pulse laser beam 15. The vehicle may be folded or collapsed in the form of an X, bringing the wheels into a side-by-side position, to reduce its overall size without compromising its structural rigidity when reopened. The list presentation section comprises tables showing statistical degrees of interest of users in association with respective geographical areas, respective time periods, and respective store genres. The compound may be in the form of a base or an acid addition salt, in particular a pharmaceutically acceptable acid.