Abstract: The present relates to a component mixing device comprising a central unit (10) and a disposable cartridge, said central unit (10) comprising a control unit, a plurality of vial positioning elements (13) and a cavity 14 for receiving said disposable cartridge, and said disposable cartridge (20) comprising a tubing circuitry adapted to put the components housed in said plurality of vials into communication for mixing, characterized in that the mixing device is adapted to put each vial into communication with each other through said tubing circuitry of said disposable cartridge (20) and mixing said components through an compressed air mechanism (12) located in said central unit (10) and controlled by said control unit.

Abstract: A support for a casing containing a detector for detecting estrus in cows. The support comprises a natural fiber patch having a surface area in the range from approximately 0.04 m2 to approximately 0.06 m2 which supports a substantially rectangular case which receives the detector and is placed substantially at the center of the patch. The detector for detecting estrus in cows is housed in a casing supported by the support. The support comprises a baseplate capped by a cover.

Abstract: A system comprises a central unit and a plurality of display modules each adapted to show on a display information received from the central unit, for example for displaying prices in a store. The central unit comprises a transmitter including a current loop fed with a low-frequency signal modulated according to the information to be transmitted and the system comprises, associated with each display module or group of display modules, a receive circuit, a receive antenna coupled electromagnetically to said current loop and a device for activating the receive circuit at predetermined periods for a limited duration. Each transmission of information by the central unit is preceded by the transmission of a reactivation signal which, when detected by the receive circuit during a phase in which the latter is active, causes it to be held in the active state for at least part of the duration for which said information is transmitted.