Abstract: The invention relates to a packaging comprising: a rigid shell that can be deformed by having a user apply pressure, said shell forming a storage space (1) containing a liquid or pasty substance; a breakage area (6) for releasing an applicator (3) for ejecting the liquid or pasty substance from said packaging; and a gripping area (5) including an escape path (7) for said liquid or pasty substance, the escape path being naturally closed when the user applies no pressure such that the liquid or pasty substance is prevented from being discharged after opening the packaging.

Abstract: A microwave-frequency filtering structure includes two dielectric layers separated by a conducting layer that is etched in the pattern of a filter, the upper and lower exterior faces of the stack being covered over the larger part of their surface by a conducting plane constituting ground planes of the structure, which are interlinked by a metallization of the periphery of the structure; two identical devices, an input and an output transition device, each allowing the passage from a microstrip mode to a stripline mode and vice versa, configured so that the geometry of the transition device is optimized to minimize the standing wave ratios at the ports of the filter, and to minimize the excitation and the coupling of the TE10 mode, two conducting pillars perpendicular to the plane of the structure and situated close to its principal axis, without being coupled with the filter, and linking the upper and lower ground planes.

Abstract: For associating different technologies of a microstrip line and of a rectangular waveguide, for example on a ceramic, in a transition device including a mode transformer between the line integrated into a printed circuit board, and the waveguide, the board includes a housing containing the waveguide with a large sidewall coplanar and coaxial to the strip of the line and another large sidewall fixed onto a metallic layer of the board at the bottom of the housing. A linking metallic element bridges a mechanical tolerance gap between the transformer and one of the line and the waveguide. The transformer can be integrated into the board, or into the waveguide in a microwave component.

Abstract: A full duplex microwave front end (300, 400, 500, 600, 800) for the communication system of an unmanned aerial vehicle such as a drone, comprising:—a transmitter module (310, 410, 510, 610, 710, 810) capable of selecting an antenna (311, 312, 411, 412, 511, 512, 611, 612, 711, 712), the most appropriate one at a given time, in order to emit and/or receive a signal,—a filter module (320, 420, 520, 620, 720, 820), capable of insulating the emission function from the reception function in order to emit the signal or insulating the reception function from the emission function in order to receive the signal, and—an amplifier module (340, 440, 540, 640, 740, 840), capable of amplifying the weak signal received in order to demodulate it, or capable of amplifying the power of the modulated signal intended to be emitted, characterised in that it comprises,—a switch module (330, 430, 530, 630, 730, 830) capable of switching the frequency bands B1 and B2 used for emitting and receiving the said signal respectively.

Abstract: For associating different technologies of a microstrip line and of a rectangular waveguide, for example on a ceramic, in a transition device including a mode transformer between the line integrated into a printed circuit board, and the waveguide, the board includes a housing containing the waveguide with a large sidewall coplanar and coaxial to the strip of the line and another large sidewall fixed onto a metallic layer of the board at the bottom of the housing. A linking metallic element bridges a mechanical tolerance gap between the transformer and one of the line and the waveguide. The transformer can be integrated into the board, or into the waveguide in a microwave component.

Abstract: The invention relates to a packaging comprising: a rigid shell that can be deformed by having a user apply pressure, said shell forming a storage space (1) containing a liquid or pasty substance; a breakage area (6) for releasing an applicator (3) for ejecting the liquid or pasty substance from said packaging; and a gripping area (5) including an escape path (7) for said liquid or pasty substance, the escape path being naturally closed when the user applies no pressure such that the liquid or pasty substance is prevented from being discharged after opening the packaging.

Abstract: The invention is a method and device for measuring the minimum miscibility pressure of two phases having application for enhanced oil recovery or CO2 geologic storage. In a pressure cell, gas is bubbled into a liquid, or conversely, liquid is dripped into a gas. The presence of bubbles or of drops is detected through the differential pressure variation measured between the inside of the cell and an injected phase injection line. This measurement is performed by means of a very accurate differential pressure sensor, for various pressures imposed within the cell. A relation between the number of bubbles or of drops formed per time unit and pressures within the cell is deduced therefrom. The minimum miscibility pressure of the two phases then corresponds to the pressure for which the inverse of the number of bubbles or of drops is zero, which is deduced by extrapolation of the relation.

Abstract: A method for building a wall out of lime and hemp, prefabricated blocks made of hemp and lime for the use of the method and a device for molding such prefabricated blocks.

Abstract: Method and device for measuring the minimum miscibility pressure of two phases. In a pressure cell, gas is bubbled into a liquid, or conversely, liquid is dripped into a gas. The presence of bubbles or of drops is detected through the differential pressure variation measured between the inside of the cell and an injected phase injection line. This measurement is performed by means of a very accurate differential pressure sensor, for various pressures imposed within the cell. A relation between the number of bubbles or of drops formed per time unit and pressures within the cell is deduced therefrom. The minimum miscibility pressure of the two phases then corresponds to the pressure for which the inverse of the number of bubbles or of drops is zero, which is deduced by extrapolation of the relation. Application: enhanced oil recovery or CO2 geologic storage.

Abstract: The invention concerns a method whereby a fluid sample is brought (1) at constant pressure Pe and temperature maintaining the heavy fractions, in particular asphaltenes, in dissolved state and/or in stable colloidal state, at the intake (4) of a capillary passage with high pressure drop. Said sample is forced to flow through the capillary conduit, at an increasing flow rate. The method consists in measuring (11) the fluid pressure Ps and the fluid flow rate D (12) at the outlet (5) of the capillary conduit and in representing the variation curve of the quantity &Dgr;P=Pe−Ps or the quantity D as a function of the other quantity or as a function of time. The deposit pressure, characteristic of the threshold of deposit of heavy fractions, is defined as the value of pressure Ps, which corresponds to a change of the slope in the variation curve of the quantity &Dgr;P or the quantity D.

Abstract: Particles are adhesively bond to a support such as a glass or metal strip by covering the support with a film of a sol-gel solution by immersing in a liquid containing an organometallic compound, such as an organic silicon compound. The film is allowed to gel and during gelling, mineral particles are projected against the coated support. The gelled film coated with particles is dried and unbonded particles are removed. The method is of particular application to adhesively bonding clay, carbonate and silica particles.

Abstract: The invention concerns an enhanced oil recovery process improving the gas sweeping of an oil formation reservoir comprising at least one injection, through at least one injection well, either simultaneously or separately, of a plug of solution, preferably aqueous, of at least one surfactant and of a gas and/or steam plug (or "slug"), so as to form a foam.At least a portion of said reservoir is swept by said foam and the hydrocarbons are recovered through at least one producing well. The surfactant complies with the general formula R.sub.F --Y--X wherein R.sub.F is a perfluoric carbon radical, Y is a single bond or a divalent carbon radical containing at least one oxygen, sulfur and/or nitrogen atom, and X is a hydrophilic group.

Abstract: A wafer type millimetric crystal holder of the Sharpless type with an impedance matched i.f. coaxial output. The connection between the i.f. coaxial output and the diode comprises two coaxial quarter wavelength stubs interconnected by a strip line element with a wire central conductor operating as a rejector at the carrier frequency. The diameter of the central conductor is determined by the impedance matching condition.