Abstract:
The invention relates to a process for separating, in an aqueous medium, at least one actinide element from one or more lanthanide elements by using at least one molecule which sequesters the said actinide element to be separated and membrane filtration, the said process successively comprising: a) a step of bringing at least one molecule which sequesters the said actinide element in contact with the aqueous medium, the said molecule not being retained in the non-complexed state by the said membrane and being capable of forming a complex with the actinide element to be separated, comprising the said element and at least two of the said sequestering molecules, which complex is capable of being retained by the membrane; b) a step of passing the aqueous medium over the membrane in order to form a permeate on one side, comprising an aqueous effluent depleted of the said actinide element, and a retentate comprising the said complex.
Abstract:
A process for denitrogenation of hydrocarbonated compounds containing basic and/or neutral nitrogenous hydrocarbonated compounds characterized by the fact that the hydrocarbonated compounds are placed in contact with a polymeric material including at least one polymer P obtained from at least one non-styrenic monomer A with at least one polar function generating hydrogen bonds with the nitrogenous hydrocarbonated compounds.
Abstract:
The invention concerns the use of at least one gas in combination with at least one active product for manufacturing an inhalable medicament or part of an inhalable medicament intended for the treatment or prevention of pain in humans or animals. The gas is chosen from among helim, oxygen, nitrogen, xenon, hydrogen, carbon monoxide (CO), carbon dioxide (CO2), argon, krypton, nitrogen monoxide (NO), nitrogen protoxide (N2O), carbonated hydrocarbons, fluorocarbons and mixtures of several of these gases. The active product is chosen from among paracetamol, acetylsalicylic acid, arylcarboxylic acid, corticosteroids, mineralosteroids, non-steoroidal anti-inflammatory drugs and their derivatives, codeine and its derivatives, morphine and morphine mimetics.
Abstract translation:本发明涉及至少一种气体与至少一种活性产品的组合用于制造用于治疗或预防人或动物疼痛的可吸入药物或可吸入药物的一部分。 气体选自直升机,氧气,氮气,氙气,氢气,一氧化碳(CO),二氧化碳(CO 2/2),氩气,氪气,一氧化氮(NO),氮氧化氮(N O 2),碳酸烃,碳氟化合物和这些气体中的几种的混合物。 活性产物选自对乙酰氨基酚,乙酰水杨酸,芳基羧酸,皮质类固醇,类固醇,非甾体抗炎药及其衍生物,可待因及其衍生物,吗啡和吗啡模拟物。
Abstract:
The invention concerns the recovery of Pu (IV) by using crown compounds.According to the invention, the aqueous solution containing the plutonium (IV) is placed in contact with at least one crown compound, for example DCH 18C6, dissolved in an organic diluting agent, such as benzonitrile. In the case where the solution only contains traces of Pu, it is possible to use a crown compound secured to a solid phase, such as silica.The aqueous solution is a concentrated solution of fission products, an effluent originating from an irradiated nuclear fuel reprocessing installation or a concentrated solution of plutonium with americium.
Abstract:
Substituted thiophenes of general formula: ##STR1## in which: R represents hydrogen atom or an aliphatic group containing from 1 to 4 carbon atoms,X and Z may be identical or different and represent a hydrogen atom or a fluorine atom,Y represents an at least partially fluorinated aliphatic or aromatic group,m represents an integer equal to or greater than 1, andn represents an integer such that 0.ltoreq.n.ltoreq.12.The invention also relates to the electrically conducting polymers containing recurring units derived from monomers chosen from the substituted thiophenes.
Abstract:
Substituted thiophenes of the general formula: ##STR1## in which: R represents a hydrogen atom, a halogen atom or an aliphatic group containing from 1 to 4 carbon atoms,X represents a hydrogen atom or a fluorine atom,Y represents an at least partially fluorinated aliphatic or aromatic group,m represents an integer equal to or greater than 2, andn represents an integer such that 0.ltoreq.n.ltoreq.7.The invention also relates to the electrically conducting polymers containing recurring units derived from monomers chosen from the substituted thiophenes.
Abstract:
The subject of the invention is mainly an electrically conductive polymer containing repeated units derived from 3-alkythiophenes in which the alkyl substituent contains from six to nine carbon atoms.The invention also relates to a process for manufacturing these polymers and to electroconductive devices containing them.
Abstract:
Apparatus and method for the locking and releasing of a train of drilling shafts having an essentially vertical axis employ wedges adapted to penetrate an opening in a rotation table of a wellhole in order to lock upon a shaft projecting from the opening while another shaft is screwed to or unscrewed from the upper end of the first-mentioned shaft. The wedges have a tapered external shape complementary to the shape of the opening and an internal shape complementary to the external shape of the shafts. Each wedge is individually attached to an associated arm connected to a vertically movable plate by means of an articulation and a jack that applies the wedge to a shaft. The attachment of the wedges to the arms has sufficient freedom to permit the wedges to engage a shaft and center the shaft between the wedges automatically before the wedges are lowered into the opening of the rotation table to lock the engaged shaft therebetween.
Abstract:
A machine to apply screwing and unscrewing torque to successive drilling shafts employs upper and lower claws, one of which is fixed and the other of which rotates through a limited angular range. Each claw comprises a pair of right-angle branches extending oppositely from a base and terminating in spaced relation to provide a permanent opening at one side of the claw opposite to the base. Each claw has a jaw comprising three gripping elements positioned essentially at the vertices of an equilateral triangle, one gripping element being fixed to the base and the other gripping elements being movably mounted on the branches at opposite sides of the opening. One claw comprises a pair of parts relatively movable vertically to form a viewing opening when the machine is not applying torque.
Abstract:
The invention relates to an antimicrobial composition of monoanhydro-hexitol monoalkyl ether isomers bearing an alkyl ether radical (OR) at C-3, C-5 or C-6 of the monoanhydro-hexitol, in which the alkyl group (R) is a linear or branched, cyclic or noncyclic hydrocarbon-based group comprising between 4 to 18 carbon atoms. The invention also relates to a method for disinfecting a surface and/or equipment contaminated by bacteria, said method comprising applying to said surface or equipment to be disinfected, a composition according to the invention.