Abstract: It comprises a handle (1), an air flow amplifier (8) leading to a retention means (2) such as a cyclone via a passage (3), and a compressed air inlet device (7, 9) in the amplifier (8) that creates a strong suction of outside air, through the nozzle (4) capable of capturing even fine particles of low content up to a measurable quantity. Being completely devoid of electricity, this device is useful in hazardous atmospheres, in particular for detecting the presence of explosives after analysis of the particles collected by this device. It makes it possible to sample particles in extreme conditions of high or low temperatures.

Abstract: Photovoltaic energy generation device comprising several cells (11; 111), comprising a photovoltaic cell (7), comprising one or more elementary photovoltaic cell(s), and a storage element (8) connected to the terminals of the photovoltaic cell, characterized in that it comprises several subsets of cells (11; 111) and switches (103, 104; K7, K8, K9) disposed between these subsets able to dispose two subsets in series or in parallel.

Abstract: The invention relates to a method for producing a device comprising magnetic blocks magnetized in different directions, comprising steps of: a) forming, in a stack of one or more layers of at least one antiferromagnetic material and one or more layers of at least one ferromagnetic material resting on a substrate, at least one first block and at least one second block, said blocks being longilineal and separate and extending respectively in a first main direction and in a second main direction, the first and the second main direction forming between them a first non-zero angle ?, b) annealing said blocks at a temperature greater than the ordering temperature of said antiferromagnetic material or than the blocking temperature or than the Néel temperature of said antiferromagnetic material.

Abstract: The invention relates to an installation and a process for the production of liquid fuels starting from a solid feedstock that contains the organic material in which: a) the solid feedstock is subjected to a gasification stage so as to convert said feedstock into synthesis gas, b) the synthesis gas is subjected to a purification treatment, c) the purified synthesis gas is subjected to a conversion stage that comprises the implementation of a Fischer-Tropsch-type synthesis so as to convert said synthesis gas into a liquid effluent and a gaseous effluent, d) the liquid effluent is fractionated so as to obtain a gaseous fraction, a naphtha fraction, a kerosene fraction and a gas oil fraction, and e) at least a portion of the naphtha fraction is recycled in gasification stage a).