Abstract: A method for regenerating an amine extractant used for recovery of metals involves contacting a liquid organic phase containing an amine complexed with one or more metals with an aqueous solution substantially free of chloride ions to strip the one or more metals from the organic phase. The stripped organic phase is then contacted with a solution of hydrochloric acid to regenerate the amine extractant which can then be recycled in a production process.

Abstract: A tool for mounting a belt in a groove of a pulley of an automotive vehicle wherein the pulley has a rim and a flat lateral surface on each side of its groove. The tool includes a main body having an internal flat body surface and an external flat body surface; a flap provided on an edge of the main body and bent substantially at a right angle relative to the internal flat body surface and in the direction thereof. The tool also has a belt guiding area having substantially an arcuate shape and projecting substantially normally from the external flat body surface. The tool is useful for mounting a power transmission striated belt that includes an elastomeric matrix and a lengthwise supporting structure consisting of polyamide 4.6 twisted strands.

Abstract: The power transmission striated belt includes an elastomeric matrix (21) and a lengthwise supporting structure consisting of polyamide 4.6 twisted strands (20). The supporting structure (21) is selected so that the stress-elongation diagram of the belt exhibits an average slope ranging from 12 to 20 daN/% of elongation per width centimeter. The twisted strands are wound with an almost null nominal tension, and the curing operation and the cooling operation after curing are carried out without any belt tensioning.

Abstract: The invention proposes a novel technique for implementing high performance atomic lithography, and in particular high resolution lithography. The technique makes use of Stern-Gerlach type atomic interferometry enabling disturbances to be implemented in the atomic phase of the beam. Such interaction then directly modulates the intensity of the associated wave in the plane extending transversely to the beam of atoms, and does so in controllable manner. The installation of the invention for nanolithography by atomic interferometry comprises a Stern-Gerlach type interferometer comprising, as its phase object, four-pole magnetic induction having a transverse gradient created by four parallel bars carrying alternating direct currents, bracketed between two separator plates, preceded and followed respectively by a spin polarizer and by an analyzer operating by laser pumping.

Abstract: The invention concerns a recombinant DNA vector characterized in that it is capable of directing the expression an/or transcription of a selected nucleotide sequence in the cells of the central nervous system and in that it comprises (i) at least part of the genome of an adenovirus, including the regions required for that adenovirus to penetrate into the cells normally infectable by that adenovirus and (ii) being inserted into said part of genome of an adenovirus under the control of a promoter, either present or also inserted into said genome part and operative in said cells. This recombinant vector finds particular use in the treatment of diseases of the central nervous system, also in gene therapy.

Abstract: A method for regenerating an amine extractant used for recovery of metals involves contacting a liquid organic phase containing an amine complexed with one or more metals with an aqueous solution substantially free of chloride ions to strip the one or more metals from the organic phase. The stripped organic phase is then contacted with a solution of hydrochloric acid to regenerate the amine extractant which can then be recycled in a production process.

Abstract: A cleaning composition suitable for use in an air compressor-free foam producing apparatus is described. The cleaning composition may be applied to a non-horizontal surface targeted for cleaning and the cleaning composition has a cationic and anionic moiety that forms a rod micellar formation.

Abstract: The present invention relates to a power transmission striated belt including an elastomeric matrix (21) and a lengthwise supporting structure consisting of polyamide 4.6 twisted strands (20). The supporting structure (21) is selected so that the stress-elongation diagram of the belt exhibits an average slope ranging from 12 to 20 daN/% of elongation per width centimeter. The twisted strands are wound with an almost null nominal tension, and the curing operation and the cooling operation after curing are carried out without any belt tensioning.

Abstract: The invention concerns a recombinant DNA vector characterized in that it is capable of directing the expression an/or transcription of a selected nucleotide sequence in the cells of the central nervous system and in that it comprises (i) at least part of the genome of an adenovirus, including the regions required for that adenovirus to penetrate into the cells normally infectable by that adenovirus and (ii) being inserted into said part of genome of an adenovirus under the control of a promoter, either present or also inserted into said genome part and operative in said cells. This recombinant vector finds particular use in the treatment of diseases of the central nervous system, also in gene therapy.

Abstract: The invention concerns a method for reducing recombination phenomena among nucleic acids. It also concerns the use of said method for producing defective viruses not contaminated by replication particles. The invention further concerns novel viral constructs.

Abstract: The present invention relates to a power transmission striated belt including an elastomeric matrix (21) and a lengthwise supporting structure consisting of polyamide 4.6 twisted strands (20). The supporting structure (21) is selected so that the stress-elongation diagram of the belt exhibits an average slope ranging from 12 to 20 daN/% of elongation per width centimeter. The twisted strands are wound with an almost null nominal tension, and the curing operation and the cooling operation after curing are carried out without any belt tensioning.

Abstract: Recombinant viruses comprising a heterologous DNA sequence coding for a protein having glutamate decarboxylase (GAD) activity, preparation thereof, and therapeutic use thereof, in particular for treating and/or preventing degenerative neurological diseases.

Abstract: The present invention pertains to the use of compounds affecting the activity of transcription factors for the preparation of a pharmaceutical composition for the treatment of neurodegenerative diseases.

Abstract: A power transmission striated belt including an elastomeric matrix (21) and a lengthwise supporting structure consisting of polyamide 4.6 twisted strands (20). The supporting structure (21) is selected so that the stress-elongation diagram of the belt exhibits an average slope ranging from 12 to 20 daN/% of elongation per width centimeter. The twisted strands are wound with an almost null nominal tension, and the curing operation and the cooling operation after curing are carried out without any belt tensioning.

Abstract: This is a method of regenerating dithiophosphorus acids from disulfides containing sulfur--sulfur bonds, formed by oxidation of dithiophosphorus acids, such as sulfur--sulfur bonding of dithiophosphoric, dithiophosphonic and dithiophosphinic acids, in a solvent extraction organic phase in which the dithiophosphorus acid is dissolved in a diluent. This process reacts metal directly with the organic solution containing the disulfide to produce a metal loaded complex form of the regenerated dithiophosphorus extractant in the organic solution. This metal complex forms by direct reaction of the metal with the disulfides without requiring the presence or the formation of nascent or gaseous hydrogen. The organic solution containing the regenerated dithiophosphorus extractant can be either directly recycled into a solvent extraction circuit or recycled after the loaded metal is stripped.

Abstract: A vertical member support stand is described which includes a body with a generally tubular vertical member receiving cavity. The cavity has a bottom, a top opening, and circumferential sidewalls. At least three upper pressure members are substantially equally spaced around the circumferential sidewalls of the vertical member receiving cavity adjacent the top opening. The pressure members are pivotally mounted whereby they are pivoted into engagement with a vertical member positioned in the vertical member receiving cavity. At least three lower pressure members are substantially equally spaced around the circumferential sidewalls of the vertical member receiving cavity adjacent the bottom. The pressure members are pivotally mounted whereby they are pivoted into engagement with a vertical member positioned in the vertical member receiving cavity. The pressure members are locked in a selected pivotal position such that they securely hold the vertical member.

Abstract: The invention relates to a matrix display device with a plurality of sets of electrodes as well as to the process for controlling the same.The device comprises two insulating walls and by a material having a plurality of zones distributed in matrix-like manner and inserted between a first system of electrodes covering one of the two walls and defining p control columns and a second system of electrodes covering the other wall, constituted by parallel conductive strips, and defining q control lines, the column x.sub.i in which i is an integer such that 1.ltoreq.i.ltoreq.p and row y.sub.j in which j is an integer such that 1.ltoreq.j.ltoreq.q defining a zone x.sub.i y.sub.j of the material. The first system is constituted by a solid layer of electrodes and n sets of electrodes, which are electrically insulated from one another. The electrodes of this system being grouped in such a way that each group of electrodes corresponds to a single control row.

Abstract: A matrix display device having two groups of row electrodes and a process for the control thereof. This device is constituted by two insulating walls made from a material having several zones distributed in matrix-like manner, a first group of p rows of parallel electrodes covering one of the walls and a second group of q columns of parallel electrodes covering the other wall. A zone x.sub.i y.sub.j is defined by the overlap of row x.sub.i and column y.sub.j in which i varies from l to p and j from l to q. The said device also comprises a third group of p rows of electrodes, identical to the first group and placed on the second group, while being electrically insulated from the latter by an insulating layer.

Abstract: An apparatus allowing the use of low-grade solid fuel powders (coal, lignite, peat) and products derived therefrom during cold starting periods and for backing up combustion chamber operation at low load. The pilot burner (1) has an auxiliary and pilot igniter which burns gas produced by gasifying low-grade fuel in a gasification unit (6) and a main igniter which burns the low-grade fuel powder in a storage silo (5). The combustion air is heated in an air heater (10) by the gas produced by gasifying low-grade fuel in gasification unit (6). In particular, turbulence is set up in the combustion air sent to the outlet of the pilot igniter. Application to combustion apparatus including steam generators of thermal power stations.

Abstract: Process for the control of an optical characteristic of a material intercalated between two electrodes to which are applied excitation signals, wherein in order to bring about an excitation of the material a series of elementary signals is applied to the electrodes for increasing periods of time, each elementary signal either being equal to a constant or zero, all these elementary signals constituting a decomposition of the desired excitation into a given base.An application is in the field of optoelectronics and more particularly in the control of liquid crystal cells.