Abstract: The invention relates to a system or method for capturing a molecule of interest contained in an industrial gaseous effluent, enabling the implementation of a regeneration step (120) in at least one regeneration section (30), a condensation step (150) in at least one condensation section (40), and wherein a step (130) of compressing the gas mixture comprising a solvent and the molecule of interest upstream of the condensation section (40) so that the pressure in the at least one condensation section (40) is at least three times higher than the pressure in the at least one regeneration section (30). The method further comprises a heat transfer step (140) between the at least one condensation section (40) and the at least one regeneration section (30).

Abstract: The invention relates to a method for treating oil sand. The steps consisting of cooling said oil sand to a temperature lower than the glass transition temperature of the bitumen by bringing said oil sand into contact with carbon dioxide in the solid state and applying mechanical energy to the mixture produced. Then melting the solid carbon dioxide in such a way as to produce a multiphase system. The multiphase system is then separated into at least one solid phase and at least one liquid phase. The bituminous phase is then recovered from the separated liquid phase. The invention also relates to a device for treating oil sand, especially designed for implementing said method.

Abstract: The invention relates to a method for the allocation of packets on a carrier containing timeslots, comprising the step of defining an interleaving length and an allocation window characterized in that packets are allocated within groups defined by the power needed for the transmission and that the size of groups is at most equal to the interleaving length.

Abstract: In a process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst comprising a metal and a support comprising silicon carbide, the support comprises more than 50% by weight of silicon carbide in the beta form. A process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst the effluent thus obtained are also disclosed.

Abstract: The invention relates to a method for obtaining synthesis gas by partial catalytic oxidation, consisting in bringing a hydrocarbon in a gaseous state into contact with an oxidizing gas, and therefore possibly a small amount of water vapor, in the presence of a catalyst comprising at least one silicon carbide at a temperature of more than 800° C. According to the invention, the silicon carbide has a specific surface which is determined by the BET method and which is less than or equal to 100 m2/g, the contact time between the mixture of gaseous hydrocarbon, oxidizing gas and silicon carbide being more than 0.05 seconds and the pressure inside the reactor being greater than atmospheric pressure.

Abstract: In a process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst comprising a metal and a support comprising silicon carbide, the support comprises more than 50% by weight of silicon carbide in the beta form. A process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst the effluent thus obtained are also disclosed.

Abstract: In a process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst comprising a metal and a support comprising silicon carbide, the support comprises more than 50% by weight of silicon carbide in the beta form. A process for the conversion of carbon monoxide to C2+ hydrocarbons in the presence of hydrogen and of a catalyst the effluent thus obtained are also disclosed.

Abstract: A process for the conversion of methane/carbon dioxide mixtures to a carbon monoxide/hydrogen mixture is provided in which use is made of a catalyst with a support comprising silicon carbide in the beta form.

Abstract: The invention relates to a method for the allocation of packets on a carrier containing timeslots, comprising the step of defining an interleaving length and an allocation window characterized in that packets are allocated within groups defined by the power needed for the transmission and that the size of groups is at most equal to the interleaving length.

Abstract: The invention relates to a method for obtaining synthesis gas by partial catalytic oxidation, consisting in bringing a hydrocarbon in a gaseous state into contact with an oxidizing gas, and therefore possibly a small amount of water vapor, in the presence of a catalyst comprising at least one silicon carbide at a temperature of more than 800° C. According to the invention, the silicon carbide has a specific surface which is determined by the BET method and which is less than or equal to 100 m2/g, the contact time between the mixture of gaseous hydrocarbon, oxidizing gas and silicon carbide being more than 0.05 seconds and the pressure inside the reactor being greater than atmospheric pressure.

Abstract: The invention relates in particular to a TDMA transmission system including transmitters synchronized to a single receiver, each of the transmitters being able to transmit to the receiver on a given carrier frequency bursts with lengths which are all multiples of that of a unit burst including a guard time, the unit bursts including at least one guard time and the receiver being adapted to receive simultaneously bursts from different transmitters. According to the invention, each transmitter includes means for inserting a filler sequence into each burst to be transmitted at each location of the burst that is likely to correspond to a guard time in a burst received simultaneously on a different carrier frequency. The invention reduces the harmful effects of interference if the time of reception of the guard time of a burst on a first carrier frequency corresponds to the time of reception of information symbols in another burst received simultaneously on another carrier frequency.

Abstract: The invention concerns a method of transmitting non-dated digital data between a transmitter and a receiver in which the data can take at least two different paths between the transmitter and the receiver and handover from one path to another occurs during transmission. In the transmitter, packets intended for the second path are transmitted only after the last packet intended for the first path has been transmitted and in the transmitter and in the receiver packets on the first or second path are delayed in order for packets on the second path to arrive after packets on the first path. It is therefore not necessary to transmit signaling to differentiate the two paths at the receiver, which can include a single demodulator.

Abstract: A method of controlling power in a transmission link between a central station and a terminal in a point to multi-point communication network and system for carrying out the method, particularly suitable for implementation in satellite access networks or terrestrial point to multi-point access networks. A transmitter transmits a plurality of reference signals (4) to a plurality of receivers (2); each receiver (2) measures the respective quality of the signals so as to determine a reference signal (4) corresponding to the receiver (2); each receiver (2) indicates to the transmitter (1) the reference signal (4) corresponding thereto; and if required, the transmitter (1) adjusts the power level of transmission of the traffic data (3).

Abstract: The invention concerns a method of transmitting data from a plurality of sources (22i) to a plurality of receivers (24) via a single gateway (21) using at least two separate data transmission media (23i), said receivers (24) being able to receive selectively data transmitted on any of said transmission media (23i), the method being characterized in that it assures dynamic distribution of said data to be transmitted to said transmission media (23i) in accordance with a global analysis of all of said data to be transmitted, signalling data (32; 42) regularly specifying to each of said receivers (24) the transmission medium or media (23i) it is to use.

Abstract: The invention concerns a TDMA transmission method employing a plurality of carrier frequencies (211 through 21N) accessible selectively in receivers by frequency hopping, characterized in that said plurality of carrier frequencies comprises: a first set of at least one carrier frequency (211 through 212) exclusively dedicated to transmitting signalling data, and a second set of carrier frequencies (213 through 21N) formed of the set of carrier frequencies that do not belong to said first set and exclusively dedicated to transmitting payload information. The invention also concerns a corresponding signal and a corresponding receiver.

Abstract: The invention concerns a method of communication used in a shared resource transmission system. In accordance with the invention it consists in sending at least two identical data packets without waiting for an acknowledgement of reception between sending said data packets. The invention can reduce call set-up time compared to the prior art and applies in particular to satellite transmission.

Abstract: The invention concerns an antenna system including at least two antennas (10, 11), each of said antennas (10, 11) being capable of pointing independently of the other(s) in any direction within a solid angle. According to the invention, the antennas (10, 11) are mounted on a common support (17) co-operating with rotation means (18) for rotating the common support (17), the rotation means (18) being activated to prevent masking of one of the antennas (10, 11) by another of the antennas (10, 11). The invention applies in particular to tracking non-geostationary satellites.

Abstract: A method of locating a fixed terminal of a telecommunication system comprising a constellation of satellites, a plurality of gateway stations and a plurality of fixed terminals includes “coarse”, “intermediate” and “fine” location phases. During the “intermediate” location phase, the terminal calculates at least three hyperboloids and their intersection, assuming a “coarse” estimated position of the terminal is known. Each hyperboloid can be written: Hi,j:dj−di=(tj′−tj).c−(ti′−ti).

Abstract: A method is provided for zeolite synthesis from a synthesis medium containing in particular a trivalent aluminum source, a tetravalent silicon source, at least an alkaline or alkaline-earth cation in hydroxide form and water in a reactor containing a solid helical moving body in a guiding tube defining an internal space and a space external to the tube. The invention is characterized in that the synthesis medium is circulated in the reactor in a continuous flow passing through the internal space then the space external to the tube and returning to the internal space, only driven by the roation of the solid helical moving body, at a speed of less than 500 rpm, in the tube which is kept fixed, the synthesis medium being kept at a temperature suitable for at least one of the ripening operations or the crystal growth of the synthesized zeolite. The invention also is directed to a device for implementing the method.

Abstract: The invention concerns a method consisting: in passing the sea water through an electrically conductive catalyst (10), arranged in the cathode section of an electrolytic cell (1), comprising a cathode section (3) and an anode section (4) provided with, the former, with at least one cathode (11a, . . . ) and, the latter, with at least one anode (18) and separated by a wall (2) permeable only to the cations and in circulating, in the anode section (4), a conductive aqueous solution of a particular anolyte; in providing an electric voltage between the cathode and the anode of the cell (1) while maintaining the contents of the cathode and the anode sections at specific potentials, so as to produce, in the cathode section, consumption of oxygen dissolved in the treated water and in decomposing, in the anode section, an appropriate amount of solution for ensuring the electroneutrality of the treated water.