Abstract: The present invention relates to a rotary machine (10), comprising a casing (32) delimiting an oil compartment (31), a shaft (33), a bearing (22, 23, 24), an oil sealing device (35) located between the rotary portion (360) and the upper portion (320) of the casing (32), characterised in that the oil sealing device (35) comprises at least one groove (52) for drawing in external air in the direction (S) of rotation of the shaft (33), the groove (52) being located in the rotary portion (360) and/or in the upper portion (320) of the housing (32), the rotary portion (360) not being in contact with the upper portion (320), the groove (52) for drawing in external air being configured to draw air from the upstream end (521) to the downstream end (522) towards the compartment (31) when the shaft (33) rotates in the direction (S).

Abstract: The present invention relates to a rotary machine (10), comprising a casing (32) delimiting an oil compartment (31), a shaft (33), a bearing (22, 23, 24), an oil sealing device (35) located between the rotary portion (360) and the upper portion (320) of the casing (32), characterised in that the oil sealing device (35) comprises at least one groove (52) for drawing in external air in the direction (S) of rotation of the shaft (33), the groove (52) being located in the rotary portion (360) and/or in the upper portion (320) of the housing (32), the rotary portion (360) not being in contact with the upper portion (320), the groove (52) for drawing in external air being configured to draw air from the upstream end (521) to the downstream end (522) towards the compartment (31) when the shaft (33) rotates in the direction (S).

Abstract: The invention provides a method for the preparation of FePt or CoPt nanoparticles in ionic liquids, which in certain embodiments constitutes a direct method for the preparation of such nanoparticles having the face-centred tetragonal (fct) crystalline form. The invention also provides FePt or CoPt nanoparticles obtainable by a method of the invention.

Abstract: A generally U-shaped connector, having two branches, for fastening together a windshield wiper arm and a windshield wiper blade, has a latching means cooperating with a recess formed in the wiper arm. The connector also includes gripping means for unlocking the arm from the blade. At least one of the branches of the connector body includes at least two resiliently deformable tongues, which are separated from each other by gaps. One of these tongues carries the latching means, while the other tongues, working as a pair, carry the gripping means.