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: 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: An electrolyzer apparatus for the electrolytic manufacture of elemental F2 from an electrolyte/HF-solution, e.g., KF×1.8 HF, comprising at least one electrolytic cell which contains at least two anodes, often 20 to 30 anodes, a metallic cathodic vessel, and at least two rectifiers such that each anode is allocated to one rectifier. In this manner, each anode can be controlled and regulated individually. Failure of each individual anode, e.g., anode break, causes the production of undesired side products, e.g., of CF4. Any faulty anode can be detected easily, and each anode can be shut off individually, if needed, and repaired.

Abstract: A hydrogen fluoride supply unit which comprises a plurality of transportable hydrogen fluoride storage containers connected to a hydrogen fluoride supply line and a chemical plant comprising the hydrogen fluoride supply unit. Such chemical plant may be for the manufacture of fluorine, wherein the hydrogen fluoride supply line is connected to an electrolysis cell for producing fluorine by HF electrolysis of a molten salt electrolyte. A process for the manufacture of a chemical comprising using such chemical plant. Also a method for supply of hydrogen fluoride to a chemical plant, which comprises: (a) filling at least one transportable hydrogen fluoride storage container with hydrogen fluoride, (b) transporting the hydrogen fluoride storage container to the hydrogen fluoride supply unit, (c) connecting the hydrogen fluoride storage container to the hydrogen fluoride supply line, and (d) supplying hydrogen fluoride from the hydrogen fluoride storage container to the hydrogen fluoride supply line.

Abstract: Elemental fluorine is often manufactured electrochemically from a solution of KF in hydrogen fluoride and contains varying amounts of entrained electrolyte salt in solid form as impurity. The invention concerns a process for the purification of such impure elemental fluorine by contact with liquid hydrogen fluoride, e.g., in a jet gas scrubber or by bubbling the raw fluorine through liquid hydrogen fluoride. After this purification step, any entrained hydrogen fluoride is removed by adsorption, condensing it out or both. After passing through a filter with very small pores, the purified fluorine is especially suited for the semiconductor industry as etching gas or as chamber cleaning gas in the manufacture of semiconductors, TFTs and solar cells, or for the manufacture of micro-electromechanical systems (“MEMS”).

Abstract: An electrolyzer apparatus for the electrolytic manufacture of elemental F2 from an electrolyte/HF-solution, e.g., KF×1.8 HF, comprising at least one electrolytic cell which contains at least two anodes, often 20 to 30 anodes, a metallic cathodic vessel, and at least two rectifiers such that each anode is allocated to one rectifier. In this manner, each anode can be controlled and regulated individually. Failure of each individual anode, e.g., anode break, causes the production of undesired side products, e.g., of CF4. Any faulty anode can be detected easily, and each anode can be shut off individually, if needed, and repaired.

Abstract: A hydrogen fluoride supply unit which comprises a plurality of transportable hydrogen fluoride storage containers connected to a hydrogen fluoride supply line and a chemical plant comprising the hydrogen fluoride supply unit. Such chemical plant may be for the manufacture of fluorine, wherein the hydrogen fluoride supply line is connected to an electrolysis cell for producing fluorine by HF electrolysis of a molten salt electrolyte. A process for the manufacture of a chemical comprising using such chemical plant. Also a method for supply of hydrogen fluoride to a chemical plant, which comprises: (a) filling at least one transportable hydrogen fluoride storage container with hydrogen fluoride, (b) transporting the hydrogen fluoride storage container to the hydrogen fluoride supply unit, (c) connecting the hydrogen fluoride storage container to the hydrogen fluoride supply line, and (d) supplying hydrogen fluoride from the hydrogen fluoride storage container to the hydrogen fluoride supply line.

Abstract: A fluorine gas manufacturing plant wherein F2 is manufactured by the electrolysis of KF/HF compositions. The plant comprises skid modules for: HF storage, the electrolytic cells, storage and purification of the manufactured F2 raw gas, for fluorine gas delivery including a single buffer tank or multiple storage units, scrubbers to provide purified waste gas, for providing cooling water circuits, analysis, electrical rectifiers, an electrical sub-station with transformers and emergency supply, and for utilities including a control room with laboratory and a rest room for the personnel. The advantage of the skids is that they can be separately manufactured in workshops, tested, transported to the facility and assembled there. A great advantage is the safety aspect, a reliable F2 production for 24 hours and 7 days a week of high purity F2.

Abstract: Elemental fluorine is often manufactured electrochemically from a solution of KF in hydrogen fluoride and contains varying amounts of entrained electrolyte salt in solid form as impurity. The invention concerns a process for the purification of such impure elemental fluorine by contact with liquid hydrogen fluoride, e.g., in a jet gas scrubber or by bubbling the raw fluorine through liquid hydrogen fluoride. After this purification step, any entrained hydrogen fluoride is removed by adsorption, condensing it out or both. After passing through a filter with very small pores, the purified fluorine is especially suited for the semiconductor industry as etching gas or as chamber cleaning gas in the manufacture of semiconductors, TFTs and solar cells, or for the manufacture of micro-electromechanical systems (“MEMS”).

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.