Associating an object with a relevant data source is disclosed. One method comprises the steps of depositing a stressed material overlying a semiconductor substrate and patterning the stressed material to form a stressed dummy gate electrode overlying a channel region in the semiconductor substrate so that the stressed dummy gate induces a stress in the channel region. A plated wire is attached onto the main board to stride across a region in the long hole corresponding to a lower edge portion on each taper face of the standing board. The aqueous solution is passed through the bed such that the flow of the aqueous solution to be purified into the bed and the flow of purified aqueous solution from the bed has a pH differential less than \xb11 pH. The baffle plate is configured to divide the first fluid passageway into a first flow path and a second flow path, where the first array of fluid conduits extends through the first flow path and the second array of fluid conduits extends through the second flow path. A clamp is provided for clamping the gimbal housing.