Abstract: An emergency lights assembly for emergency vehicles provided with an air conditioning unit is aerodynamically shaped, surrounds at least a portion of an air conditioning unit, and includes a front fresh air inlet and a top air outlet allowing the assembly to be mounted directly in contact with the cab of an emergency vehicle.

Abstract: A rotor for all systems used to circulate various single-phase or multiphase fluids, ranging from organic or non-organic solvents to CO2 in a liquid or supercritical phase in cells connected to each other by channels, the assembly being subjected to adjustable centrifugal acceleration and including precision temperature control for chemical or biochemical reactions and extractions, and purification and separation reactions and, for use in chemical and biochemical reactors. Such a rotor is formed of one or more discs stacked on top of each other, each being made up of circular sectors consisting of a circular half-sector and a circular half-sector, each being the mirror image of the other relative to the plane of the circular half-sector after they have been assembled opposite each other in a sealed manner. Their half-channels having respective links which form a link channel when the half-sectors are joined.

Abstract: The present invention relates to cells (1) for a centrifugal partition chromatography column, consisting of stacked discs and comprising a network of three-dimensional cells interconnected in series and communicating with liquid phase circulation channels, said cells being distributed over the periphery of at least one disc driven into rotation about a main axis (8); the cells have a geometric shape of revolution about a substantially radial axis with respect to said disc and they are connected by channels (2, 4) of substantially circular, elliptical or parallelepipedic section, the main two dimensions of which are smaller than the largest cross-section of the cell. The invention also relates to methods of manufacturing these cells.

Abstract: The invention relates to a method for separating constituents of a liquid feed by liquid-liquid centrifugal chromatography and to a device for implementing it. Constituents (A, B) having different partition coefficients such that they are respectively carried along at unequal velocities by a light solvent (l) and a heavier solvent (L), the feed is continuously injected at an intermediate point of a separation column (col), successive cycles comprising alternately a heavy solvent injection stage and a light solvent injection stage are carried out respectively at the two ends of the column consisting of the interconnection in series of at least one set of separation cells, and the separated solvents (FA, FB) are collected during each one of said stages at the column ends opposite the solvent injection points.

Abstract: The present invention relates to cells (1) for a centrifugal partition chromatography column, consisting of stacked discs and comprising a network of three-dimensional cells interconnected in series and communicating with liquid phase circulation channels, said cells being distributed over the periphery of at least one disc driven into rotation about a main axis (8); the cells have a geometric shape of revolution about a substantially radial axis with respect to said disc and they are connected by channels (2, 4) of substantially circular, elliptical or parallelepipedic section, the main two dimensions of which are smaller than the largest cross-section of the cell. The invention also relates to methods of manufacturing these cells.

Abstract: The invention relates to a method for separating constituents of a liquid feed by liquid-liquid centrifugal chromatography and to a device for implementing it. Constituents (A, B) having different partition coefficients such that they are respectively carried along at unequal velocities by a light solvent (l) and a heavier solvent (L), the feed is continuously injected at an intermediate point of a separation column (col), successive cycles comprising alternately a heavy solvent injection stage and a light solvent injection stage are carried out respectively at the two ends of the column consisting of the interconnection in series of at least one set of separation cells, and the separated solvents (FA, FB) are collected during each one of said stages at the column ends opposite the solvent injection points.

Abstract: The invention relates to a method for separating constituents of a liquid feed by liquid-liquid centrifugal chromatography and to a device for implementing it. Constituents (A, B) having different partition coefficients such that they are respectively carried along at unequal velocities by a light solvent (1) and a heavier solvent (L), the feed is continuously injected at an intermediate point of a separation column (col), successive cycles comprising alternately a heavy solvent injection stage and a light solvent injection stage are carried out respectively at the two ends of the column consisting of the interconnection in series of at least one set of separation cells, and the separated solvents (FA, FB) are collected during each one of said stages at the column ends opposite the solvent injection points.

Abstract: The invention relates to a method for separating constituents of a liquid feed by liquid-liquid centrifugal chromatography and to a device for implementing it. Constituents (A, B) having different partition coefficients such that they are respectively carried along at unequal velocities by a light solvent (1) and a heavier solvent (L), the feed is continuously injected at an intermediate point of a separation column (col), successive cycles comprising alternately a heavy solvent injection stage and a light solvent injection stage are carried out respectively at the two ends of the column consisting of the interconnection in series of at least one set of separation cells, and the separated solvents (FA, FB) are collected during each one of said stages at the column ends opposite the solvent injection points.

Abstract: A method and system is intended for fine proportioning of fluids injected into a pumping installation, e.g., a liquid chromatography installation, allowing to compensate for non-return valve errors. The system includes a fluid delivery system including vessels for constituents (A, B, X) that communicate with a pumping unit (1–11) by means of a one-way valve (8) that opens upon suction, and a control unit (PC) that adjusts the respective proportions of the various fluids sucked by acting on the opening time of solenoid valves (EV1 to Even) associated with the various vessels. As the opening and closing times of the one-way valve are most often unequal in practice, control unit (PC) is suited to cyclically change the order of the control signals applied to the various solenoid valves during the various successive suction stages of each pumping unit so as to compensate on average for the proportioning inequalities due to each one-way valve.

Abstract: A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two opposite longitudinal ends. The phase mask has grating corrugations projecting from its surface and distributed with a periodicity along its length. The periodicity of the phase mask is tuned by reversibly changing its length between the two longitudinal ends, such as by compressing or stretching the mask. In this manner, the interference pattern of a light beam passing through the phase mask is also tuned, which allows to control the characteristics of a wavelength filter photoinduced using this phase mask assembly.

Abstract: Method and system intended for fine proportioning of fluids injected into a pumping installation, allowing to compensate for non-return valve errors.