Abstract: The present invention relates to functionalized hydrogel networks grafted with at least one moiety for use in numerous fields, from cosmetics to surgery and medicine.

Abstract: A control button which includes a button head having an upper end acting as a pressing surface for initiating an action, and a lower end having at least one electrical connector; an internal button body into which the button head can be inserted; an external button body comprising an upper end and a lower end, the upper end being open for the insertion of the internal button body such that it comes into abutment and the pressing surface of the button head protrudes, and such that the at least one electrical connector emerges from the lower end of the external button body, the flanks of the external button body between the upper end and the lower end not being solid and having material openings, the open structure of the external button body allowing compression of the external body along the axis of the button, the control button being wherein the lower base of the external body of the button has housings for accommodating different contacts of the internal body of the button when the latter is inserted.

Abstract: The present invention relates to functionalized hydrogel networks grafted with at least one moiety for use in numerous fields, from cosmetics to surgery and medicine.

Abstract: A control button which includes a button head having an upper end acting as a pressing surface for initiating an action, and a lower end having at least one electrical connector; an internal button body into which the button head can be inserted; an external button body comprising an upper end and a lower end, the upper end being open for the insertion of the internal button body such that it comes into abutment and the pressing surface of the button head protrudes, and such that the at least one electrical connector emerges from the lower end of the external button body, the flanks of the external button body between the upper end and the lower end not being solid and having material openings, the open structure of the external button body allowing compression of the external body along the axis of the button, the control button being wherein the lower base of the external body of the button has housings for accommodating different contacts of the internal body of the button when the latter is inserted.

Abstract: The invention relates to a system for extruding cementitious material beads for a robot used for the additive manufacturing of architectural structures, comprising: a head for depositing beads of cementitious material, referred to as printhead (30), comprising an inlet mouth (31) and an outlet nozzle (34) configured to form beads of cementitious material; a feed circuit (20) for said printhead (30), comprising a reservoir (10) for storing cementitious material, a feed conduit (21) connecting said storage reservoir (10) to said printhead (30), and a booster pump (22) for said feed conduit (21), characterized in that it further comprises a sensor (33) for sensing the pressure rate of the cementitious material flowing in said printhead (30), and suitable for transmitting pressure/flow rate measurements to said booster pump (22), and in that the booster pump (22) is configured to control the boosting of the feed conduit (21) on the basis of the measurements transmitted by the sensor (33).

Abstract: A method for extracting uranium (VI) from an aqueous solution including phosphoric acid, which includes placing the aqueous solution 5 in contact with an organic material, followed by separating the aqueous solution and the organic material. The organic material includes a solid polymer substrate impregnated with a compound having the following general formula (I): The invention also relates to a method for retrieving uranium (VI) from an aqueous solution including phosphoric acid.

Abstract: An organic material which includes a solid polymer substrate onto which molecules having the following general formula (I) are grafted: The invention also relates to the use of the organic material to extract the uranium (VI) from an aqueous acid solution, to associated methods for extracting and retrieving uranium (VI) as well as to a molecule which is a precursor of the organic material. The disclosure also relates to the use of the organic material to extract the uranium (VI) from an aqueous acid solution, to associated methods for extracting and retrieving uranium (VI) as well as to a molecule which is a precursor of the organic material.

Abstract: The invention relates to a method for the preparation of cyclohexanone from cyclohexane. The invention relates more particularly to a method for the production of cyclohexane whose impurity content enables cyclohexanone to be used as a raw material for the production of e-caprolactam. The inventive method consists in treating the mixture of cyclohexanol/cyclohexanone arising from oxidation of cyclohexane by oxygen in a dehydrogenation stage in order to transform cyclohexanol into cyclohexanone and the impurities present such as cyclopentenal. The inventive method makes it possible to obtain highly pure cyclohexanone which is compatible when used as a raw material in the synthesis of e-caprolactam.

Abstract: A video system comprises a first video device which transmits a video signal comprising image information and synchronisation information and a second video device which receives the composite video signal. The second device has a time base. For synchronising the two devices synchronisation information is extracted from the video signal received by the second Video device and from the time base of the second video device; a phase difference between the video signal received by the second video device and the time base of the second video device is determined based on the extracted synchronisation information; control information of a first type representative of the amount of the phase difference is transmitted to the first device; and in the first device the phase of the video signal is switched by a phase angle represented by the first type control information.

Abstract: The invention relates to a method for the preparation of cyclohexanone from cyclohexane. The invention relates more particularly to a method for the production of cyclohexane whose impurity content enables cyclohexanone to be used as a raw material for the production of e-caprolactam. The inventive method consists in treating the mixture of cyclohexanol/cyclohexanone arising from oxidation of cyclohexane by oxygen in a dehydrogenation stage in order to transform cyclohexanol into cyclohexanone and the impurities present such as cyclopentenal. The inventive method makes it possible to obtain highly pure cyclohexanone which is compatible when used as a raw material in the synthesis of e-caprolactam.

Abstract: The invention relates to a video camera system comprising a mobile video camera 1 and a base station 2. The camera 1 comprises means of acquiring images and means of radio transmission of the acquired images. The base station 2 comprises means of radio reception for receiving the acquired images. The system comprises evaluation means AGC, MER, BER and 500 for evaluating the quality of the transmission between the camera 1 and the base station 2, and display means 506 to 509 for displaying information QR relating to the quality of transmission.

Abstract: A video system comprises a first video device which transmits a video signal comprising image information and synchronisation information and a second video device which receives said composite video signal. The second device has a time base.

Abstract: A method for making a chiral transition metal-ligand catalyst complex that is active in catalyzing stereoselective ring opening reactions includes contacting an asymmetric tetradentate ligand, in an excess of a Brønsted acid, with a salt of a first row transition metal, wherein the acidity of the conjugate acid of the salt is the same as or less than the acidity of the Brønsted acid, under conditions effective to allow formation of the active chiral transition metal-ligand catalyst complex, and forming a solution of the complex in a water-miscible, protic solvent from which the active complex can be precipitated by the addition of water and adding water to the solution to precipitate at least a portion of the complex.

Abstract: A method for making a chiral transition metal-ligand catalyst complex that is active in catalyzing stereoselective ring opening reactions includes contacting an asymmetric tetradentate ligand, in an excess of a Brønsted acid, with a salt of a first row transition metal, wherein the acidity of the conjugate acid of the salt is the same as or less than the acidity of the Brønsted acid, under conditions effective to allow formation of the active chiral transition metal-ligand catalyst complex, and forming a solution of the complex in a water-miscible, protic solvent from which the active complex can be precipitated by the addition of water and adding water to the solution to precipitate at least a portion of the complex.

Abstract: The invention is a video camera system comprising a mobile video camera 1 and a base station 2. The camera 1 comprises means of acquiring images and means of radio transmission of the filmed images. The base station 2 comprises means of radio reception for receiving the filmed images. The system comprises evaluation means AGC, MER, BER and 500 for evaluating the quality of the transmission between the camera 1 and the base station 2, and display means 506 to 509 for displaying information QR relating to the quality of transmission.

Abstract: The invention concerns the upgrading of a by-product of direct synthesis, namely MeSiCl3, by vapor phase catalytic hydrogenation of said by-product to obtain MeHSiCl2 with greater added value. The invention concerns a method for preparing MeHSiCl2 by catalytic hydrogenation of MeSiCl3 in the presence of a metal catalyst with high selectivity levels in MeHSiCl2 economically and without having recourse to drastic and industrially unsuitable conditions. The invention uses a catalyst comprising a bimetal ruthenium/tin catalytic agent. Said catalytic agent is obtained by reacting ruthenium chloride and tin chloride in an acid medium. In practice, the catalyst is formed by a silica powder support impregnated by the ruthenium/tin catalytic agent.

Abstract: The invention relates to a process for converting, by virtue of a threshold, a signal exhibiting alternating rising and falling transitions, into a rectangular signal, wherein the threshold is determined on each transition of the signal to be converted. A device for implementing the process comprises a delay line, whose input receives the signal to be converted by way of an impedance equal to the characteristic impedance of the line, and a comparator whose inputs are linked respectively to the input and to the output of the line.

Abstract: A process of clock recovery during the sampling of computer-type signals, wherein the sampling clock is generated from a phase locked loop or PLL which multiplies a given frequency by an integer number, includes gauging the position of the edges of the computer-type signals with respect to the sampling clock with the aid of an analog ramp triggered by the rising edges of the said signals in such a way as to obtain a first position-dependent value, carrying out a sampling clock phase correction and then carrying out a sampling clock frequency correction by using a processor.

Abstract: The invention concerns a method for preparing hydrogenated alkylmonosilanes, by catalytic hydrogenolysis, under hydrogen pressure, of halogenoorganopolysilanes, improving known methods, in particular by facilitating implementation, and in terms of cost-effectiveness and performance which are shown by the efficiency of the resulting hydrogenated monosilanes. In said method the starting polysilanes are of the type: (CH3)Cl2Si—SiCl(CH3)2; (CH3)Cl2Si—SiCl2(CH3); (CH3)Cl2Si—Si(CH3)3; (CH3)2ClSi—SiCl(CH3)2; (CH3)Cl2Si—SiCl(Ch3)—SiCl2(CH3); (CH3)Cl2Si—Si(CH3)(SiCH3Cl2)—SiCl2CH3. The hydrogenated monosilanes CH3H2ClSi; (CH3)2HClSi; CH3HCl2Si are obtained by contacting said polysilanes with gaseous hydrogen under pressure, in the presence of a catalytic system AB comprising a hydrogenation catalyst precursor A and an auxiliary B for dissolving precursor A in the reaction medium. Said catalytic system is further characterized in that it is reductant-free.

Abstract: This invention relates to a process for the preparation of 2-hydroxy-4-methylthiobutyric acid or the ammonium salt of 2-hydroxy-4-methylthiobutyric acid by enzymatic hydrolysis of 2-hydroxy-4-methylthiobutyronitrile, comprising: a) preparing a biological material having a nitrilase activity; b) immobilizing the biological material, c) exposing the 2-hydroxy-4-methylthiobutyronitrile to the biological material thus immobilized to obtain the ammonium salt of 2-hydroxy-4-methylthiobutyric acid; and d) optionally converting the salt obtained to the corresponding acid.