Abstract: A method for controlled production of an array of planar microparticles with the multiplexing of molecules on the surface thereof, intended to function as molecular sensors and/or actuators and a matrix (array) of microparticles, the surface thereof being printed with all of the molecular components required to provide the surface with functionality. Different molecular elements are multiplexed on the surface of each particle while they are supported on a substrate by means of a structural foot engraved below the particle. These microparticles can be released mechanically from the support on which they are produced using a controlled mechanical rupture method which is not chemically aggressive and therefore does not affect the molecules previously printed on the surface. The array and the particles contained therein offer great versatility in both chemical and/or biological applications.

Abstract: Conventional type liquefier appliance that incorporates an anti-drip system consisting of a “T”-shaped spout seal, besides the inclusion of a series of non-slip strips on the connecting gears between the drive unit and the rotary elements, which enable it to come to a sudden stop without the inertia of said elements forcing them in an upward direction, furthermore the grater disc is not fixed to the drive element by a through-screw but rather said screw is welded to its under side, while in addition the push piston terminates in a concavity which engages the piece to be liquefied during use and wherein said piston may be replaced by a feed hole reducer piston.

Abstract: Applicable in communications systems in the sending of data among user equipment of nodes connected to a network. It is characterised in that it comprises generating random keys (6) that are different for each packet, which are used for enciphering each packet by means of the DES enciphering algorithm, and the sending in the header of the packet of that random key (6), in turn enciphered (9) by means of a more secure algorithm than the DES algorithm, which permits improvement in the security of transmissions on a non-secure medium to which are connected the noses and user equipment of a telecommunications system using the procedure of the invention instead of the DES enciphering algorithm.