Abstract: A concentration photovoltaic system (1,11) comprises lens-type concentrator means (2) for intercepting and concentrating beams of incident solar rays (4,114), and is characterized in that it comprises selection means (24,124), for selecting the frequencies of beams of solar rays entering the photovoltaic system (1,11), capable of direct selected rays towards a plurality of photovoltaic cells (12, 14, 16, 502, 602, 702). The invention also comprises a method for concentrating beams of incident solar rays (4, 114) which uses the concentration photovoltaic system described.

Abstract: An automatic system (100) for conserving samples at a controlled temperature comprising at least one controlled-temperature thermo-insulated conservation chamber (1) with temperature control means (3) containing a set of disks (9) for storing samples (19) and a Cartesian robotic system (4) equipped with pick-up device (18), contained in an upper chamber (2) separated from the chamber (1) by means of an insulating shelf (6), where said Cartesian system (4) through the controlled-access opening (7) moves the samples (19) between the I/O drawer (20) and the above-mentioned set of disks (9). The combined and synchronized movement of the robotic device (4) and of every single disk of the set enables each storage location to be reached. The management of the devices of the automatic system (100) is controlled by an N/C system driven by dedicated management SW.