A spiral conveyor with automatic flow control includes a plurality of curved segments connected to form a spiral for the flow by gravity of articles from an upper level to a lower level. First antenna geometry is such that it is configured to resonate, for first or second polarization, at a predetermined stimulation frequency of a material for which Raman scattering is to be studied, or at a Stokes or anti-Stokes frequency corresponding with the material when excited at stimulation frequency. Upon the change from the first condition to the second one, a function of moving the screen in a direction of pushing pressure caused by the pointer is executed by the second processing. The memory controller and respective translation circuits are structured to control the array of XY TCAM cells to perform single cycle update and single cycle search operations. One or more dissipater elements, having respective through holes for said pair of cables are provided positioned transversely free relative to an inner surface of said longitudinal cavity. The communication transceiver is configured to receive content information associated with the website describing a current state of the website, receive historical event information associated with the website, and receive external information associated with the website from a source external to the website.