Abstract: A method of fabrication of a black watch dial, comprising the following steps: providing a substrate (1); deposition of a black coating (2) on said substrate, wherein said coating (2) comprises carbon nanotubes (21).

Abstract: A method of fabrication of a black watch dial, comprising the following steps: providing a substrate (1); deposition of a black coating (2) on said substrate, wherein said coating (2) comprises carbon nanotubes (21).

Abstract: System for actuating a contactor of electronic component for the electric testing of said components, whose movement is generated by an electromechanical transducer and controlled by a control system limiting the pressing force of the contactor on the component to be tested.

Abstract: Procedure for the production of transgenic seedlings starting from genetically transformed buds, the said seedlings belonging to the species Cucumus melo and containing at least one gene introduced through the intermediary of Agrobacterium tumefaciens, characterized by the culture in two successive stages of genetically transformed buds, the first of these steps taking place in a plant cell culture medium containing a cytokinin and more particularly 6-benzyl aminopurine (BAP), and the second, which is performed when the buds have attained a height of about at least 3 mm, taking place in a plant cell culture medium containing as macro-elements: KH2PO4 about 50 to about 100 mgL−1 MgSO4 about 75 to about 300 mgL−1 CaCl2.2H2O about 500 to about 2500 mgL−1 KNO3 about 750 to about 1200 mgL−1 NH4NO3 about 150 to about 200 mgL−1.

Abstract: Procedure for the production of transgenic seedlings starting from genetically transformed buds, the said seedlings belonging to the species Cucumus melo and containing at least one gene introduced through the intermediary of Agrobacterium tumefaciens, characterized by the culture in two successive stages of genetically transformed buds, the first of these steps taking place in a plant cell culture medium containing a cytokinin and more particularly 6-benzyl aminopurine (BAP), and the second, which is performed when the buds have attained a height of about at least 3 mm, taking place in a plant cell culture medium containing as macro-elements:______________________________________ KH.sub.2 PO.sub.4 about 50 to about 100 mgL.sup.-1 MgSO.sub.4 about 75 to about 300 mgL.sup.-1 CaCl.sub.2.2H.sub.2 O about 500 to about 2500 mgL.sup.-1 KNO.sub.3 about 750 to about 1200 mgL.sup.-1 NH.sub.4 NO.sub.3 about 150 to about 200 mgL.sup.

Abstract: In an electrochemical sensor, a gas analyzing electrochemical cell is implanted directly on a substrate wafer. The entire wafer is coated with enamel layers except at the places needed for the electrical connections. A fixing part fixes the sensor in a housing in such a way that the electrochemical cell is inside the housing which contains the gas to be analyzed. This fixing part provides imperviousness and prevents the gases from reaching the electrical connections.

Abstract: Procedure for the production of transgenic seedlings starting from genetically transformed buds, the said seedlings belonging to the species Cucumus melo and containing at least one gene introduced through the intermediary of Agrobacterium tumefaciens, characterized by the culture in two successive stages of genetically transformed buds, the first of these steps taking place in a plant cell culture medium containing a cytokinin and more particularly 6-benzyl aminopurine (BAP), and the second, which is performed when the buds have attained a height of about at least 3 mm, taking place in a plant cell culture medium containing as macro-elements:______________________________________ KH.sub.2 PO.sub.4 about 50 to about 100 mgL.sup.-1 MgSO.sub.4 about 75 to about 300 mgL.sup.-1 CaCl.sub.2.2H.sub.2 O about 500 to about 2500 mgL.sup.-1 KNO.sub.3 about 750 to about 1200 mgL.sup.-1 NH.sub.4 NO.sub.3 about 150 to about 200 mgL.sup.

Abstract: A method for making a microcavity in an enamel layer is disclosed. For this purpose, a layer of a carbon-based material with the dimensions of the microcavity to be obtained is provided. This layer is coated with an enamel except in a limited zone. The unit is heated to high temperature so as to cause combustion of the carbon-based material. The combustion gases escape through the reduced zone.

Abstract: Disclosed is an oxygen sensor of the resistive type for the measurement of relative fluid concentrations of fluid reactive species. The following are disposed on one and the same substrate:a sensitive element, the resistivity of which is sensitive to an excess of one of the reactive species;a thermistor mounted as a resistance bridge with the sensitive element;a heating resistor fixing the minimum temperature threshold of operation.Application: The disclosed device can be applied notably to oxygen sensors.

Abstract: A method for making a microcavity in an enamel layer is disclosed. For this purpose, a layer of a carbon-based material with the dimensions of the microcavity to be obtained is provided. This layer is coated with an enamel except in a limited zone. The unit is heated to high temperature so as to cause combustion of the carbon-based material. The combustion gases escape through the reduced zone.

Abstract: Electrochemical sensor for the concentrations of species in a fluid mixture comprising a measuring cell of the type having a partial pressure internal reference electrode incorporating a catalysis region in which the gaseous mixture is brought into thermodynamic equilibrium and functioning according to the so-called "assay" process, so that only a small quantity of the gaseous mixture to be analyzed is admitted into the sensor. It also comprises a supplementary cell functioning as an ionic pump, so as to continuously modify the composition of the gaseous mixture admitted into the sensor under the control of a regulatable electric current.