Disclosed are, inter alia, methods, apparatus, computer-readable media, mechanisms, and means for communicating with a memory device, such as by a memory controller, a refresh command at least partially overlapping in time with a read andor write command. A generating line of the first cylindrical lens is parallel to the first direction. The clamp displacement assembly is operatively connected between the structural member and the first and second clamp assembly. The method is particularly applicable to highly active nuclear waste liquids in High Activity Storage Tank applications, and offers significant advantages over the methods of the prior art, since it comprises a non-invasive technique which does not require the prior installation of a detector in the vessel from which data are to be obtained. The free ends are pulled through one or more peripheral slits extending towards, but not all the way to, the gripping andor locking holes and then bent against the upper outer surface of the disk and locked in place in the respective one or more peripheral locking slits. On the heat-dissipating surface of the seat to be heated, a plurality of through holes is provided.