Abstract: An additive of graphene nanomaterials for the improvement of cementitious compositions, a cementitious composition, a process for preparing a concrete a concrete and use of the concrete. The additive includes a mixture of graphene nanofibers, graphene oxide (GO), a dispersing agent (D) and a superplasticizer (SP), comprising at least two graphene nanofibers, selected among graphene nanofibers of high specific surface area (GNF-HS), graphene nanofibers of low specific surface area (GNF-LS) or graphene nanofibers of long length (GNF-LL), wherein the graphene nanofibers have an average diameter comprised between 2 nm and 200 nm, and wherein said additive of graphene nanomaterials by having different proportions of the at least two graphene nanofibers is fine-tuned for different cementitious compositions of particular properties.

Abstract: A method for preparing a silica-modified catalyst support is described comprising: (i) applying an alkyl silicate solution to a porous support material in an amount to produce a silica content of the silica-modified catalyst support, expressed as Si, in the range 0.25 to 15% by weight, (ii) drying the resulting silicate-modified support and recovering a first alcoholic solution, (iii) optionally treating the dried silicate-modified support with water, drying the resulting water-treated support and recovering a second alcoholic solution, and (iv) calcining the dried material to form the silica-modified catalyst support, wherein the first alcoholic solution contains ?10 vol % water and at least a portion of the first alcoholic solution is mixed with alkyl silicate to form the alkyl silicate solution.

Abstract: A method for preparing a silica-modified catalyst support is described comprising: (i) applying an alkyl silicate solution to a porous support material in an amount to produce a silica content of the silica-modified catalyst support, expressed as Si, in the range 0.25 to 15% by weight, (ii) drying the resulting silicate-modified support and recovering a first alcoholic solution, (iii) optionally treating the dried silicate-modified support with water, drying the resulting water-treated support and recovering a second alcoholic solution, and (iv) calcining the dried material to form the silica-modified catalyst support, wherein the first alcoholic solution contains ?10 vol % water and at least a portion of the first alcoholic solution is mixed with alkyl silicate to form the alkyl silicate solution.

Abstract: The invention relates to a binding dispersion for the production of insecticide paints and to a method for producing said dispersion, consisting of an aqueous dispersion of modified VeoVa vinyl nature, including active biocide materials, in which the polymer is vinyl acetate and VeoVa and the biocide materials, at a concentration of 10%, are immersed to surround the polymer particles, forming a structure with a polymer core and a shell of active ingredients. The production method comprises: a seeding step, in which a small part of the pre-emulsion (monomers, emulsifiers, water) and catalyst is added to the reactor; a polymerization step, in which the rest of the catalyst and pre-emulsion is then added, followed by the active biocide materials; stirring at high temperatures for at least one hour; and a redox reaction, with oxidizing and reducing agents.

Abstract: A wireless headphone system is disclosed that provides a hands-free and cord-free way to listen to a personal electronic device. The wireless headphone system comprises an earpiece component with an embedded wireless receiver and a headphone jack component with an embedded transmitter, wherein the transmitter and the wireless receiver are in communication with each other. The earpiece component comprises a protruding ear bud component, a curved arm component that wraps around a user's ear to secure the earpiece component in place, and a wireless receiver. The headphone jack component comprises a jack adapter component which is plugged into an electronic device to transmit music to the earpiece component, and a transmitter. The transmitter and the wireless receiver are in communication with each other to transmit signals from the headphone jack component to be received by the wireless receiver in the earpiece component.

Abstract: The invention relates to a device for the preservation of a hepatic graft in normothermia comprising a receptacle in which said hepatic graft is housed in a preservation solution, an arterial perfusion circuit, a portal perfusion circuit, at least one flow sensor of a perfusion circuit, and at least one pressure sensor of a perfusion circuit. For the purpose of increasing the preservation of the hepatic graft, the preservation device additionally comprises an arterial oxygenator connected to the arterial perfusion circuit, a portal oxygenator connected to the portal perfusion circuit, at least one arterial perfusion pump, at least one portal perfusion pump, a temperature exchange module configured to maintain the temperature inside the receptacle in normothermia, and a pressure and flow control device.

Abstract: A method for the manufacture of refractive optical elements includes (a) placing a substrate close to a starting material, both arranged inside a chamber; (b) vaporizing or subliming the starting material by means of light irradiation; and (c) depositing this vapour phase on the substrate. The coating deposited has a refractive optical functionality on account of its composition and profile and also presents an increase in the threshold of damage at high light intensities.

Abstract: A method and related apparatus for registering diffractive optical structures, in which: (a) a transparent substrate is positioned next to a starting material inside a chamber, (b) the starting material is vapourised or sublimated, (c) the vapour phase is deposited on the substrate, and (d) the area of the substrate on which the vapour phase was deposited is irradiated concurrently with a random distribution of the light intensity. The deposit has a diffractive optical functionality owing to the local changes produced in its structure, which are controlled by the distribution of the light intensity used in the production process.

Abstract: The method of fermentation with selected strains of B. trispora described in the present invention makes it possible to achieve lycopene yields higher than those currently described. The methods of isolation, purification and formulation are applicable to any natural source of lycopene, especially to submerged cultures of mucoral fungi of the genera Blakeslea, Choanephora, Phycomyces or Mucor. The method of extraction makes it possible to simplify the recovery process and increase the purity of the product, relative to the methods previously described. The methods of formulation provide high added value, since they make it possible to obtain stabilized preparations of lycopene for direct application in the food and pharmaceutical fields.