Abstract: A seismic wave shield for protecting an area from seismic vibrations and a method of shielding an area from seismic waves by installing a seismic wave shield. The seismic wave shield comprises a set of columns embedded in regolith and in contact with bedrock. There is a material contrast between a material forming the columns and the regolith.

Abstract: A seismic wave shield for protecting an area from seismic vibrations and a method of shielding an area from seismic waves by installing a seismic wave shield. The seismic wave shield comprises a set of columns embedded in regolith and in contact with bedrock. There is a material contrast between a material forming the columns and the regolith.

Abstract: The present invention relates to a novel multilayered assembly for the prolonged delayed and controlled diffusion of an active agent or a drug, in particular into an aqueous medium. In particular, the present invention relates to a nano-sized drug delivery structure comprising at least one support material; one multilayered structure overlaying and/or surrounding at least partially said support material and comprising at least two layers of oppositely charged materials; and one drug active agent conjugated by means of a disulphide bond on one or more negatively charged material(s) of one or more inner layer(s) of the said multilayered structure. Such a nano-sized drug delivery structure is more particularly useful for the manufacture of pharmaceutical compositions, for example intended to be used in cancer therapy. Internalization of the drug nanostructures into cancer cells, retardation of diffusion of the active drug, activity and specific targeting of the drug nanostructures were tested.

Abstract: A structure for bending transversal elastic waves around a zone to isolate of a plate, has an anisotropic Young's modulus and/or a heterogeneous mass density. The wavelengths of the elastic waves to bend are large with respect to the thickness of the plate and small with respect to the other dimensions of the plate. The structure is made by defining a meshing of a peripheral zone surrounding the zone to isolate; dividing the peripheral zone into several elementary rings and several elementary angular sectors; and forming, in each mesh delimited by an elementary angular sector and an elementary ring, a structural element in a material having a Young's modulus and/or a mass density different than those of the material forming the plate, the dimensions of the meshes and of the structural elements in the plane of the plate being less than half the wavelengths of the elastic waves to bend.

Abstract: A structure for bending transversal elastic waves around a zone to isolate of a plate, has an anisotropic Young's modulus and/or a heterogeneous mass density. The wavelengths of the elastic waves to bend are large with respect to the thickness of the plate and small with respect to the other dimensions of the plate. The structure is made by defining a meshing of a peripheral zone surrounding the zone to isolate; dividing the peripheral zone into several elementary rings and several elementary angular sectors; and forming, in each mesh delimited by an elementary angular sector and an elementary ring, a structural element in a material having a Young's modulus and/or a mass density different than those of the material forming the plate, the dimensions of the meshes and of the structural elements in the plane of the plate being less than half the wavelengths of the elastic waves to bend.