Abstract: Method for the manufacture of light emitting and/or photodetective diodes, wherein it comprises the following operations:(a) starting with a substrate of the material Mg.sub.x Zn.sub.1-x Te;(b) a means which will make this material conductive is applied thereto;(c) a layer of thickness x.sub.j is applied to the surface of this substrate and which is compensated in such a way that it has a high resistivity;(d) ions are implanted with a sufficient energy to create a trapping zone of thickness x.sub.1 in the semi-conductor surface and above it an insulating zone of thickness x.sub.2 with x.sub.1 <x.sub.j ;(e) conductive contacts are formed on the substrate surface and on its second face.Light emitting and/or photodetective diodes and diode matrixes obtained by this method.

Abstract: The fuel assembly comprises a bundle of fuel pins spaced in parallel relation in a uniform lattice by means of support grids resiliently applied against the fuel pins and a rigid independent structure formed by two parallel end plates. Tie-rods extending between the end plates are disposed at uniform intervals at the lattice nodes. The bundle of fuel pins is supported by the first grid on a series of tubular spacer members which surround the lower ends of at least a number of tie-rods with provision for a clearance space. The tubular spacer members extend between the bottom end plate and the first grid, the tie-rods being permitted to pass freely through each grid by means of guide sleeves.

Abstract: Process for the production of a sensitive plate for an exoelectron dosimeter by producing on a support a deposit of a mixture of two compositions constituted on the one hand by a substance having traps for the electrons and able to emit exoelectrons by thermal or optical stimulation and on the other by a substance having a good ionic conductivity, wherein it comprises making a homogeneous mixture of the powders constituting the two said compositions, producing by means of a plasma arc torch a plasma jet in the vicinity of the support on which the deposit is to be made and spraying said powder mixture into the jet to obtain a deposit which adheres to the support.The exoelectron dosimeter comprises a support to which adheres a plate constituted by two substances, one of which has traps for the electrons and is able to emit exoelectrons by thermal or optical stimulation and the other has a good ionic conductivity.

Abstract: The composite part is constituted by a plate of flexible material such as plastic which has electrical and/or thermal insulating properties, at least one face of the plate being provided with a metal cladding which is subjected to a photoetching process in order to form raised metallic portions corresponding to a printed circuit pattern, for example. Permanent deformation of the raised metallic portions can be produced by means of a mechanical cold-forming process without exceeding the range of elastic deformation of the flexible plate.

Abstract: A process is disclosed for preparing substituted bis-(amidinoureas) by reacting a 1-substituted-4-alkyl-4-isothiobiuret with a compound containing two aliphatic amino groups.

Abstract: Pharmaceutical vehicles for delivery of pharmacologically active chemical materials to mucous membranes, as well as pharmaceutically active compositions containing such vehicles, are provided. The pharmaceutical vehicles are clear, water-miscible, physiologically-acceptable, liquid compositions which gel to a thickened, non-flowing and adhering consistency at human body temperature. They are liquid at ambient room temperature and have a gel transition temperature in the range of from about 25.degree. C. to about 40.degree. C. Aqueous solutions of certain polyoxyethylene-polyoxypropylene condensates are suitable vehicles. Also provided are pharmaceutical compositions containing added pharmacologically active chemical material, i.e., a drug or medicament. A method of delivering the drug or medicament to a mucous membrane is also provided.This is a continuation of application Ser. No. 661,612, filed Feb. 26, 1976, now U.S. Pat. No. 4,100,271.

Abstract: Process for the extraction of fission products contained in irradiated nuclear fuel elements which have been subject to a temperature of at least 1200.degree. C. during their irradiation prior to dissolving the fuel by the wet process. After mechanically treating the elements in order to decan and/or cut them they are brought into contact with water in order to pass the fission products into aqueous solution. The treated elements are then separated from the thus obtained aqueous solution. At least one of the fission products is then recovered from the aqueous solution. The fission products are iodine, cesium, rubidium and tritium.

Abstract: Amino secondary alcohols, e.g. cinchona alkaloid such as quinine, epiquinine, quinidine, epiquinidine and mixtures thereof, are oxidized to quininone, i.e., a mixture of quininone and quinidinone, by reaction of the alcohols with a metal ketyl, in an inert hydrocarbon solvent. The ketyl is formed through the reaction of an alkali metal or amalgam with a diphenyl ketone, such as benzophenone or fluorenone.

Abstract: Quinidinone is reduced to quinidine through reaction with a reducing agent, selected from aklyl-substituted aluminum hydrides or alkali metal alkyl-substituted aluminum hydrides, in the presence of a stereospecific orienting agent, such as pyridine.

Abstract: Novel N,N'-bis(phenylcarbamoylalkyl)amidines having antiarrhythmic activity are disclosed. They are prepared by reacting an aminoalkanoylanilide with an active acid derivative such as an imidic acid ester or an alkyl orthoester.

Abstract: Antimicrobial compounds are disclosed having the formula:Z--B--Y--B--Zwherein B is carbamylguanidino or thiocarbamylguanidino; Y is an alkylene group which contains one to three nitrogen atoms or which contains two nitrogens as part of a cyclic structure; and Z can represent a number of groups such as alkyl, cycloalkyl, aryl and aralkyl.

Abstract: Antimicrobial compounds are disclosed having the formulaZ--B--Y--B--Zwherein B is carbamylguanidino or thiocarbamylguanidino; Y is a bivalent hydrocarbon radical which can be aliphatic, alicyclic or aromatic or a combination of aliphatic with alicyclic or aromatic; and Z can represent a number of groups such as alkyl, cycloalkyl, aryl, aralkyl, alkoxyalkyl, aryloxyalkyl, alkylthioalkyl or phenylthioalkyl.

Abstract: Apparatus for continuously treating a gas containing organic substances with activated carbon while regenerating the spent activated carbon with a regeneration gas, including an adsorption vessel composed of a plurality of vertically spaced contacting chambers in which layers of activated carbon are fluidized by the gas to be treated to effect adsorption of the organic substances; a desorption vessel adapted to receive a moved bed of spent activated carbon produced in the adsorption zone and to regenerate the spent activated carbon with the regeneration gas by application of heat; and means for recycling the regenerated activated carbon from the desorption vessel to the adsorption vessel.

Abstract: The device for providing a cable penetration through the vault roof of a liquid sodium cooled fast reactor comprises a vertical tube closed at the top end by a flange-plate. Electric cables connected to measuring and detecting instruments are passed through the flange-plate which is joined to the reactor vault roof in leak-tight manner and enclosed within a removable hood. At least one horizontal plate is mounted within the vertical tube and provided with orifices for the leak-tight passage of the cables. Cable storage reels are placed within the tube and can be locked in position or released by controlled mechanical means.

Abstract: A catalyst which is capable of carrying out simultaneously the oxidation of hydrocarbons and of carbon monoxide and the reduction of nitrogen oxides which are present in the exhaust gases of internal combustion engines comprises a support of inert material coated with lanthanum oxide and a catalytic phase constituted by ruthenium combined with lanthanum in the form of mixed oxide of the perovskite type, by platinum or palladium and by rhodium.

Abstract: A chamber formed at the lower end of a jack piston is made pressure-tight by means of a seal between the lateral walls of the piston and the jack cylinder and contains a gunpowder cartridge for actuating the jack. Two members located on each side of the pipe to be obturated by compression are intended to be driven together by firing the cartridge. One member is rigidly fixed to the jack piston and guided freely in translational motion by means of tie-bolts which serve to secure the other member to the jack cylinder.

Abstract: Cardiac arrhythmias can be treated by administering an effective amount of 3-aryloxy-1-(2-or 4-iminodihydro-1-pyridyl)-2-propanol or phamaceutically acceptable acid addition compound. Many new effective compounds of this type are disclosed.

Abstract: A tube which has been expanded in a support such as the tube-sheet of a heat exchanger is subjected to diametral deformation of controlled intensity and direction in the transition zone between the expanded portion of the tube and the portion which has a nominal diameter by means of an axially displaceable and radially expandable tool having a bullet-nosed shape or by means of a tube-expander of the type comprising a mandrel fitted with rollers or by means of a fluid under pressure.

Abstract: At least one cylinder having electrically conductive portions and in tangential contact with a metallic tube is associated with a tank filled with electrolyte which is brought to the contact surface between cylinder and tube as a result of rotational motion imparted to the cylinder or to the tube by suitable driving means. An electric current generator is connected to the metallic tube and to at least one of the conductive portions of the cylinder.