Abstract: The invention relates to a device (1) for distribution of at least one liquid product, the device comprising at least one injection tube (2) supplied by a liquid product and being provided with an outlet orifice (4) capable of cooperating with an inlet orifice (12) of a reception tube (10) for reception of each liquid product. According to the invention, the outlet orifice (4) of each injection tube (2) and the inlet orifice (12) of the reception tube (10) open up into a sealed reservoir (6) full of an immiscible liquid (8), the outlet orifice (4) of each injection tube (2) being at a spacing from the inlet orifice (12) of the reception tube (10) and able to be located close to the reception tube (12), the device (1) also comprising means (14) for pressurizing the immiscible liquid (8).

Abstract: A method and apparatus calculate resistance of a three-dimensional conductor system defined by boundary faces. The resistance calculation includes (a) partitioning the three-dimensional shape into a plurality of parallelepipeds, a boundary between two parallelepipeds forms and entire face for both of the two parallelepipeds, (b) determining at least one source face and at least one sink face from among the boundary faces, a current entering the conductor system through the source face and leaving the conductor system through the sink face, (c) setting boundary conditions with respect to the current for each of the parallelepipeds, (d) calculating power for each of the parallelepipeds with the boundary conditions, (e) calculating power for the conductor system based on the power and the boundary conditions of each of the parallelepipeds, and (f) obtaining the resistance of the conductor system by minimizing dissipation of the calculated power of the conductor system.

Abstract: Extensometer with flexible test specimen and Bragg gratings applied in particular to the monitoring of concrete structures, is configured to measure deformations of a host material and comprises at least one test specimen which undergoes linear bending stresses, and at least one Bragg grating formed in an optic fibre and fixed to the test specimen. The extensometer configured such that any deformation of the host material is transmitted to the grating via the test specimen. The extensometer also comprises mechanical means which transform deformation of the material into bending of the test specimen, which deforms the grating.