Inertial navigation systems for wheeled vehicles with constrained motion degrees of freedom are described. A passive ultrasonic tag according to a first embodiment of this invention includes a tag body. The dispenser is actuated by applying pressure to the pusher. The quick connect coupling assembly also includes a release mechanism to permit the locking members to be temporarily disposed into a retracted orientation, thereby permitting the first and second components to be detached from one another. This reduces the number of unnecessary handoffs and results in better system performance. These adsorbents are particularly suited to the adsorption of the para-xylene present in C8 aromatic hydrocarbon fractions in the liquid phase in processes of simulated moving bed type but also to the separation of sugars, polyhydric alcohols, cresols or substituted toluene isomers.