An interactive visualization of stored data includes a representation of a three-dimensional generally helical path extending between spaced apart ends of the path. In accordance with the invention, intracranial electrical stimulation can be administered to treat brain damage, brain disease, andor brain disorders. A first section of corrugated cardboard has an orifice which is aligned with the bore in the pressure plate. The network application server generates address mappings which the packet modifier uses for modification of data packets passing through it. An additional feature of the present invention is that not every inductive element of the filter needs to be enlarged. 03 and 2 mgm; 2; and whereof the electrostatic value of the silica particle surface is not less than the value of the charge of the silica particle surface measured in an aqueous phase without added salts at a pH not less than 7; b) consolidating the aggregates obtained at step a) either by heat treatment, or by precipitation of a mineral compound.