An imaging system includes an authorization logic that authenticates a imaging request. A profile reader may be configured to read, from a profile repository, at least one profile meta-model that is associated with at least one annotation; and a profile integrator may be configured to annotate the one or more elements with the at least one annotation to obtain an annotated model. An impedance circuit includes a feedback controller that adjusts an effective impedance associated with the second electrode based on a difference signal, a common mode signal, a phase-shifted signal, and an impedance associated with the first electrode. A communication node 15 having the first function and the second function and being the first receiver of this response packet grasps that own communication node is the search object of the first communication node. Preferably, but not necessarily, internal to the cover member are left and right guide walls which serve as crush features, as well as assistance to guiding the pivot rod therewithin. Such an in situ, simultaneously produced precipitated silicasilica gel combination provides such unexpectedly effective low abrasion and high cleaning capability and different thickening characteristics as compared to physical mixtures of such components.