Abstract: A method for forming a bulk crystal from precursors in the molten state, of solidification and growth around a seed of a material having a defined crystalline structure, includes subjecting the crystalline solid phase obtained at the end of the growth to a first controlled cooling step performed at a first higher cooling rate until a predetermined threshold temperature is reached, and to a subsequent controlled cooling step from the threshold temperature, performed at a second cooling rate lower than the first cooling rate.

Abstract: A filter device for the depletion of the leukocyte content from blood products comprising: a porous element comprising at least one fibrous web having a pore size suitable for leukocyte removal (possibly the range for the pore size should be defined), said web comprising fibres of a hydrophobic polymer coated with a hydrophilic polymer suitable to enhance the CWST of said hydrophobic polymer, characterised in that said web further includes adsorbent particles having a mean diameter lower than 30 ?m, said particles being bonded to said fibres by means of said hydrophilic polymer coating said fibres.

Abstract: A filter device for the depletion of the leukocyte content from blood products comprising: a porous element comprising at least one fibrous web having a pore size suitable for leukocyte removal (possibly the range for the pore size should be defined), said web comprising fibres of a hydrophobic polymer coated with a hydrophilic polymer suitable to enhance the CWST of said hydrophobic polymer, characterised in that said web further includes adsorbent particles having a mean diameter lower than 30 ?m, said particles being bonded to said fibres by means of said hydrophilic polymer coating said fibres.

Abstract: The calorimeter comprises an external accommodating head (23) with two cavities (26, 27) which are capable of receiving a measurement cell (29), in which the specimen to be examined is inserted, and a reference cell (31); the cells (29, 31) are surrounded by a thermoresistor (229), the variation of the resistance of which is determined by a temperature variation, and a heater (129). The two cavities (26, 27) are closed by covers (35, 37) traversed by tubular stems (47-49) capable of supporting the cells (29, 31) for the insertion, into one of them, of a specimen contained in a tubular container (53), which is immersed in a chamber (29A) in which a fluid having high thermal conductivity is present; said cavities (26, 27) are reached by conduits (41, 43; 45) so as to be subjected to vacuum or to controlled pressure using replaceable gases (air, hydrogen, etc.).