Abstract: Set of luminous display hands for a portable object which houses an electrical energy supply source, the set of luminous display hands including first and second superposed luminous display hands each provided with a hole for the passage of a drive arbour, the drive arbour of the second luminous display hand being arranged concentrically inside the drive arbour of the first hand with insertion of an insulating layer between the two drive arbours, the first and second luminous display hands respectively carrying a first and a second light source, the first pole of the first light source being electrically connected to a first terminal of the power supply source via the drive arbour of the first luminous display hand, the second pole of the first light source being connected to the first pole of the second light source via a contact piece, and the second pole of the second light source being connected to the second terminal of the power supply source via the drive arbour of the second luminous display hand.

Abstract: A timepiece mechanism comprising including a pair of components with a first component including a material taken from a first group including solid monocrystalline, natural diamond, micro- or nano-crystalline CVD diamond, solid monocrystalline diamond, and amorphous carbon “DLC”, and having a first friction surface arranged to cooperate with a second friction surface included in a second opposing component and the second component includes, at least in its second friction surface, a material with a high concentration of boron, greater than 10 atomic percent, and, in a particular embodiment, this second opposing component includes at least one ceramic containing boron. Method for manufacturing such a mechanism. Method for transforming such a mechanism.

Abstract: A modular electrochemical cell having two interchangeable assemblies each with a support structure defining a cylindrical recess and having a fitting for connecting a pipe to the assembly. A disc-shaped electrode is arranged inside each recess and the assemblies are arranged relative to each other so that their respective electrodes face each other. A modular insert is inserted between the assemblies to define an open space between the electrodes and to distribute fluid to a plurality of openings spaced from each other along an edge of this open space. Securing members secure together the two assemblies and the modular insert, and passages in the support structures convey fluid between the fittings and the modular insert.

Abstract: The invention relates to a modular electrochemical cell, which comprises:

Abstract: The invention concerns a device for the treatment, transport and/or storage of a substrate plate (10) on which has been deposited at least one micro-network (12) of samples of compounds to be tested.