Abstract: An upstream part of an air-discharge system for a turbomachine includes: a tube with an upstream end and a downstream end, and an internal tubular structure located inside the tube and configured to form therein a narrowing of its cross section. The internal tubular structure is made in one piece with the tube at the downstream end of the tube and is freely suspended at the upstream end of the tube. A turbomachine with a device for discharging air from the bearing chambers, in which the air is conducted towards the outside of the turbomachine by the air-discharge system is provided. A method for manufacturing the air-discharge system is provided.

Abstract: An array antenna is formed from delay lines, and includes radiating elements which are individually connected to line patterns of the delay lines. Such an array antenna structure can be implemented by printed circuit technology and can be used to establish radio links for data communication between a mobile carrier, such as an aircraft, and a geostationary satellite.

Abstract: An array antenna is formed from delay lines, and includes radiating elements which are individually connected to line patterns of the delay lines. Such an array antenna structure can be implemented by printed circuit technology and can be used to establish radio links for data communication between a mobile carrier, such as an aircraft, and a geostationary satellite.

Abstract: An upstream part of an air-discharge system for a turbomachine includes: a tube with an upstream end and a downstream end, and an internal tubular structure located inside the tube and configured to form therein a narrowing of its cross section. The internal tubular structure is made in one piece with the tube at the downstream end of the tube and is freely suspended at the upstream end of the tube. A turbomachine with a device for discharging air from the bearing chambers, in which the air is conducted towards the outside of the turbomachine by the air-discharge system is provided. A method for manufacturing the air-discharge system is provided.

Abstract: An array antenna is formed from delay lines, and includes radiating elements which are individually connected to line patterns of the delay lines. Such an array antenna structure can be implemented by printed circuit technology and can be used to establish radio links for data communication between a mobile carrier, such as an aircraft, and a geostationary satellite.

Abstract: A client-customized cardiopulmonary resuscitation system, according to one embodiment, may comprise: a training device for practicing cardiopulmonary resuscitation; a terminal which can communicate with the training device and acquires information on a user's cardiopulmonary resuscitation operation performed in the training device; and a server which can communicate with the terminal and provides a manager page which enables a client to directly edit the configuration of a screen displayed on the terminal.

Abstract: A client-customized cardiopulmonary resuscitation system, according to one embodiment, may comprise: a training device for practicing cardiopulmonary resuscitation; a terminal which can communicate with the training device and acquires information on a user's cardiopulmonary resuscitation operation performed in the training device; and a server which can communicate with the terminal and provides a manager page which enables a client to directly edit the configuration of a screen displayed on the terminal.

Abstract: An antenna (100) for emitting radiation from at least one electromagnetic traveling wave which propagates along a guide path is designed to reduce reflection of the traveling wave likely to occur at the end of the guide path. To this purpose, the guide path has at least one portion in the form of a spiral segment (11, 12), which is connected to another portion of the guide path in the form of a loop (13). Gain in the antenna's reflection coefficient can be obtained in this manner, which is effective in particular near a lower frequency limit of a transmission band of the antenna.

Abstract: An antenna (100) for emitting radiation from at least one electromagnetic traveling wave which propagates along a guide path is designed to reduce reflection of the traveling wave likely to occur at the end of the guide path. To this purpose, the guide path has at least one portion in the form of a spiral segment (11, 12), which is connected to another portion of the guide path in the form of a loop (13). Gain in the antenna's reflection coefficient can be obtained in this manner, which is effective in particular near a lower frequency limit of a transmission band of the antenna.

Abstract: A device fabricates annular pieces by selectively melting powder. The device includes an inner annular wall and an outer annular wall that are concentric and that define an annular powder deposition zone, and a powder dispenser movable in rotation about an axis of the inner and outer annular walls. The powder dispenser includes a wiper extending between the inner annular wall and the outer annular wall and forming an angle with the radial direction of the inner and outer annular walls.

Abstract: A device (10) for fabricating annular pieces by selectively melting powder, the device comprising an inner annular wall (12) and an outer annular wall (14) that are concentric and that define an annular powder deposition zone (A), and a powder dispenser (16) movable in rotation about the axis (X) of the inner and outer annular walls (12, 14), the powder dispenser (16) including a wiper (18) extending between the inner annular wall (12) and the outer annular wall (14) and forming an angle (?) with the radial direction (R) of the inner and outer annular walls (12, 14).

Abstract: The invention relates to an antenna comprising a plurality of metallic elements (10, 20, 30, 40), said metallic elements (10, 20, 30, 40) being in point contact (11, 21, 31, 41) with a ground plane (M) and equally distributed about a central axis of symmetry (D) of the antenna, perpendicular to the ground plane (M). The antenna of the invention is characterized in that each metallic element extends from the point contact at a non-zero angle of inclination (q) to said ground plane (M) and in that the ground plane (M) includes at least one cavity (80-83, 84-87) so that, in operation, the antenna matching is better in a specified frequency band than when the ground plane (M) has no cavities.

Abstract: The invention relates to an antenna comprising a plurality of metallic elements (10, 20, 30, 40), said metallic elements (10, 20, 30, 40) being in point contact (11, 21, 31, 41) with a ground plane (M) and equally distributed about a central axis of symmetry (D) of the antenna, perpendicular to the ground plane (M). The antenna of the invention is characterized in that each metallic element extends from the point contact at a non-zero angle of inclination (q) to said ground plane (M) and in that the ground plane (M) includes at least one cavity (80-83, 84-87) so that, in operation, the antenna matching is better in a specified frequency band than when the ground plane (M) has no cavities.

Abstract: A hydraulic oil, a predominant amount of an oil having a viscosity suitable for lubrication, and from 0.03% to 0.06% of an agent improving filterability, corresponding to the formula R—Z. Z represents an ester of succinic acid comprising the reaction product of a succinic anhydride and an aliphatic polyhydric alcohol; or a succinimide comprising the reaction product of a succinic anhydride and a polyamine, the said reaction product being treated with an after-treatment agent. R represents a polyolefin having a molecular weight (Mn) of 500 to 2500 and an Mw/Mn ratio of 1 to 5.

Abstract: Mixture of alkyl phenyl sulfonates of alkaline earth metals having: (a) from 20% to 70% by weight of a linear mono alkyl phenyl sulfonate in which the linear mono alkyl substituent contains from 14 to 40 carbon atoms, preferably from 20 to 24 carbon atoms, and the mole % of the phenyl sulfonate radical fixed on position 1 or 2 of the linear alkyl chain is between 10% and 25%, preferably between 13% and 20%, and (b) from 30% to 80% by weight of a branched mono alkyl phenyl sulfonate in which the branched mono alkyl substituent contains from 14 to 18 carbon atoms.