Abstract: A high-speed railway aerodynamic sleeper (1) including one central area (2), two support areas (3) on each side of the central area (2), on which the rails are placed, and two outer areas (4), located at the ends of the sleeper (1), following the support areas (3). The cross-section of the sleeper (1) includes, on the central area (2), and the support areas (3), and the two outer areas (4), a first bottom section (5) comprising a first polygon (7) having at least 4 sides and a second top section (6) having at least one second polygon (8) of n sides, n being?4, the first bottom section (5) and the second top section (6) being attached to each other, and the top base (10) of the first polygon (7) and the bottom base (9) of the second polygon (8) share their sides.

Abstract: Metallic substrate with a ceramic coating obtained by plasma electrolytic oxidation, resistant to degradation by tribocorrosion of light metals and their alloys, in a liquid and/or semi-solid state with a thickness from 10 to 300 ?m and resistant to immersion in said light metals and their alloys without compositional modification of the substrate. Method for obtaining a metallic substrate with a ceramic coating by plasma electrolytic oxidation in which said substrate comprises a core and an outer layer of a metal different from that of the core or of an intermetallic compound, said outer layer being obtained by thermal spraying, laser, solid or liquid diffusion, hot galvanising or cementing. This allows obtaining a ceramic coating applicable to any metallic substrate and resistant to degradation by tribocorrosion.

Abstract: Method for polymerisation over nanoparticles wherein the polymer grows over said nanoparticles, which are initially provided in virgin state and contain the absorbed water characteristic of each nanoparticle, are heat-treated at a temperature of between 50 and 500° C. for less than 24 hours such that OH groups are released on the surface of said nanoparticles, introducing same in a polymerisation reactor with a monomer to which a catalyst is added, and the polymerisation is carried out in a liquid medium according to a linear temperature increase, as well as a polymer charged with the nanoparticles thus obtained.

Abstract: Solar heat collector with a pipe in which flows an energetic fluid and a structure consisting of a frame of plastic material with metallic profiles encapsulated during the injection of said plastic material, which allows establishing orifices therein, providing a robust and lightweight collector with few components and dimensionally stable.

Abstract: Vehicle seatbelt positioner for pregnant women and persons with abdominal problems that acts on the shoulder strap and the lap belt, coupled to the user, easy to install and remove, which prevents an incorrect positioning of the seatbelt that could harm the user in case of accident.

Abstract: Vehicle seatbelt positioner for pregnant women and persons with abdominal problems that acts on the shoulder strap and the lap belt, coupled to the user, easy to install and remove, which prevents an incorrect positioning of the seatbelt that could harm the user in case of accident.

Abstract: The method of the invention comprises: obtaining a sequence of at least two images, with different levels of illumination; extracting the region containing the sign in the image; calculating the luminance values of the signs; and obtaining the difference in luminance of the sign corresponding to the two levels of illumination. The value obtained is the luminance of the sign (11) corresponding to an illumination equal to the difference between the illuminations, or additional illumination. This result is based on the additive property of luminance, according to which the luminance of a sign is the sum of the luminance produced by each source of illumination. A basic illumination device (5), an additional illumination device (7), at least one camera for taking images, and image recording, positioning and synchronism systems are required to implement the method.