Abstract: The invention relates to a system (2) for producing an optical mask (35) for surface treatment, in particular surface microtexturing, said system (2) comprising: a layer of material (20) which has an outer surface (21) that is exposed to the outside environment; and a generating and depositing device for generating and depositing droplets (30) on the outer surface (21) of the layer of material (20) in which a specific arrangement (31), forming the optical mask (35) on the outer surface (21) of the layer of material (20). The invention also relates to a treatment plant comprising a system (2) of said type. The invention further relates to a method for producing a mask as well as to a method for surface treatment.

Abstract: The invention relates to a system (2) for producing an optical mask (35) for surface microtexturing, said system (2) comprising: a substrate (10) having a surface (11) that is to be textured; a layer of material (20) which covers the surface (11) of the substrate (10) and has an outer surface (21) that is exposed to the outside environment; and a generating and depositing device for generating and depositing droplets (30) on the outer surface (21) of the layer of material (20), in a specific arrangement (31) under condensation, forming the optical mask (35) on the outer surface (21) of the layer of material (20). The invention also relates to a treatment plant comprising a system (2) of said type. The invention further relates to a method for producing a mask as well as to a surface microtexturing method.

Abstract: A granulation method that can be used to obtain a polymer from “post-consumer” materials, and a motor vehicle part made from polymers produced by recycling used polymers.

Abstract: The invention concerns a numerical calculation procedure of the diffraction of a structure (1) whose numerical model defines the dielectric permittivity at each point comprizing the steps of: definition of a numerical modellization of the diffraction model of a structure including: the splitting of the numerical model of the dielectric permittivity into N numerical models of dielectric permittivity; the determination of the diffraction model of the said layers from the numerical model of this layer; numerical calculation of the diffraction of the structure including: an initial iteration during which one performs: one wave propagation in the direction of layers 1 to N, and one wave propagation in the direction of the layers N to 1, ulterior iterations, each ulterior iteration of index k including: one wave propagation in the direction of layers 2 to N: one wave propagation in the direction of layers N?1 to 1.

Abstract: The present invention relates to chitosan hydrogel microparticles of a median size d50 comprised between 1 and 500 ?m (obtained from a number distribution), the chitosan having a degree of acetylation of less than equal to 20% and its concentration in the hydrogel being comprised between 0.25 and 5% by weight based on a total weight of the hydrogel, for use in neuron regeneration and/or in the repair of the nervous system, advantageously of the central nervous system, and/or in the grafting of neurons and/or in the treatment of neurodegenerative diseases and/or in the treatment of paralyses. It also relates to an implant comprising an aqueous suspension of microparticles mixed with Schwann cells and/or stem cells and/or trophic factors.

Abstract: The present invention relates to positively charged particles consisting of a chitosan polyelectrolyte complex and of an anionic polymer, characterized in that the chitosan has a degree of acetylation (DA) in the range of 35 to 49% and a mean molar mass by weight (Mw) in the range of 55 to 150 kg/mol, as well as to a method for preparing same.

Abstract: According to the invention, to analyse a non-limpid medium, this medium is lit by at least one light pulse, a spectral and temporal transmission image, in counting mode, is acquired from the lit medium, and the image and derivatives thereof are processed so as to acquire information about the non-limpid medium. The invention applies to the analysis of diffusing and absorbing media, for example milk.