Abstract: A method and a device for regulating the temperature inside a building having walls that include an inner microporous wall separated from a thermally insulating outer wall by a sheet of air, the device having a data processor configured to drive and control the circulation of outside air between the double walls of the building so as to act as a function of climatic conditions to regulate the temperature and the hygrometry inside the building by evaporating and condensing a fraction of the humidity of the microporous inner wall of the double walls of the building.

Abstract: A method and a device for regulating the temperature inside a building having walls that comprise an inner microporous wall separated from a thermally insulating outer wall by a sheet of air, the device having data processor means (22) driving means (30) for controlling means (32) for circulating outside air between the double walls of the building so as to act as a function of climatic conditions to regulate the temperature and the hygrometry inside the building by evaporating and condensing a fraction of the humidity of the microporous inner wall of the double walls of the building.

Abstract: A device for applying a thin layer of a powder on a support means (14) includes a device (12) for storing the powder, a screed (30) that includes a shoe (36) with a working surface, as well as a device (28) for guiding in translation in a direction of movement F. The shoe (36) is rotatable and includes a device (32, 34) for inclining the to take at least two positions, the first in which the working surface is parallel to the support (14) for the layers to take up a predetermined volume of powder and a second in which this working surface is inclined at an angle ? relative to the support.

Abstract: A method for manufacturing a building element based on plaster consists of introducing a mixture of plaster, a granular filler and water in a mold (10) with rigid non deformable walls (12, 14, 16), compressing said mixture into the mold at a pressure that is greater than or equal to a threshold value beyond which plaster crystallization is prevented by increasing its solubility in water, then causing rapid crystallization of the plaster by reducing or ceasing compression of the mixture.

Abstract: A thermoelectric generator comprising a plurality of semi-conductor elements of type n an type p alternatingly disposed and connected at the ends thereof to form a plurality of thermocouples on two opposite faces of the generator, said elements being thin polycrystalline semi-conductor ceramic layers deposited on a microporous support by means of serigraphy and fixed to said support by sintering.

Abstract: A succession of superposed digitized sections of an object are produced from a three-dimensional representation of the object. A powder or a mixture of powders is spread in the form of a fine layer and heated to a temperature close to solid phase sintering temperature of the powder or the mixture of powders. The layer is brought to the sintering temperature by scanning with a laser beam the layer such that a selected part of the powder, corresponding to one of the digitized sections of the object to be produced, is sintered in solid phase by the additional energy supplied by the laser. Additional layers of the powder or the mixture of powders are spread, heated and scanned with the laser beam until all the digitized superposed sections of the object to be produced are obtained.

Abstract: An arrangement of electrolysis pots suitable for use for the production of aluminum by igneous electrolysis according to the Hall-Héroult process with an electrolysis current with intensity Io is disclosed. The arrangement comprises juxtaposed zones including an inner lateral zone. a central zone, and an outer lateral zone. The arrangement can be used, for example, in an electrolysis plant.

Abstract: The object of the invention is a device for applying a thin layer of a powder on support means (14) comprising means (12) for storing the powder, screeding means (16) with a screed (30) comprising a shoe (36) with a working surface as well as means (28) for guiding in translation in a direction of movement F, characterized in that the shoe (36) is rotatable and comprises means (32, 34) for inclining it to take at least two positions, the first in which the working surface is parallel to the support means (14) for the layers to take up a predetermined volume of powder and a second in which this working surface is inclined at an angle &agr; relative to said support means.

Abstract: The invention concerns a method for marking an object with mineral powders, characterised in that in consists in depositing on the substrate a coat consisting of mineral powders, producing a marking on the substrate coated surface using a laser beam, said laser beam providing the energy required for sintering the coat irradiated particles, and for generating a diffusion between the sintered particles and the substrate; and removing the non-irradiated coating part using cleaning means. The invention also concerns the associated device, characterised in that it comprises a table (32) whereon is arranged the substrate (10), a laser (16), depositing means (20). cleaning means (18), and control means (26) for controlling the laser beam shot (16).