Abstract: A first subject of the present invention has an antiviral formulation with metallic copper particles in an unoxidized form and having a median particle diameter inferior or equal to 200 nm, graphene oxide or reduced graphene oxide, and a bonding matrix material. A second subject of the invention has an antiviral filtering material with a layer of textile and at least one layer of an antiviral coating comprising metallic copper particles in an unoxidized form and having a median particle diameter inferior or equal to 200 nm, graphene oxide or reduced graphene oxide, and a bonding matrix into which both metallic copper particles and graphene oxide or reduced graphene oxide are anchored. The invention also concerns methods of preparation of the antiviral formulation and of the antiviral filtering material. Finally, the invention includes an antiviral face mask with a layer of textile coated with the antiviral formulation.

Abstract: A method for the manufacture of reduced graphene oxide from Kish graphite including: the provision of Kish graphite, the intercalation of Kish graphite with a persulfate salt and an acid at room temperature to obtain intercalated Kish graphite, the expansion of the intercalated Kish graphite at room temperature to obtain expanded Kish graphite, the mixture of the expanded Kish graphite with at least an acid and an oxidizing agent while the gases generated during the expansion step are still at least partially present so that the expanded Kish graphite is simultaneously oxidized, exfoliated and reduced into reduced graphene oxide.

Abstract: A coated cast iron substrate including a coating including nanographites and a binder being sodium silicate, wherein the cast iron substrate has a composition, in weight percent, including from 2.0 to 6.67% C and including optionally one or more of the following elements: Mn?3 wt %, Si?5 wt %, Mo?2 wt %, Cu?2.5 wt %, Ni?2 wt %, Cr?3 wt %, V?0.5 wt %, Zr?0.3 wt %, Bi?0.01 wt %, Mg?0.1 wt %, Ce?wt %, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration. A method for the manufacture of this coated cast iron substrate is also provided.

Abstract: A coated stainless-steel substrate including a coating including nanographites and a binder being sodium silicate, wherein the stainless-steel substrate has the following composition in weight percent: C?1.2%, Cr?11.0%, Ni?8.0% and on a purely optional basis, one or more elements such as Nb?6.0%, B?1.0%, Ti?3.0%, Cu?5.0%, Co?3.0%, N?1.0%, V?3.0%, Si?4.0%, Mn?5.0%, P?0.5%, S?0.5%, Mo?6.0%, Ce?1.0%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration. A method for the manufacture of this coated stainless-steel substrate is also provided.

Abstract: A pre-coated steel substrate coated with: —optionally, an anticorrosion coating and —a flux including at least one titanate and at least one nanoparticle chosen from: TiO2, SiO2, Yttria-stabilized zirconia (YSZ), Al2O3, MoO3, CrO3, CeO2 or a mixture thereof, the thickness of the flux being between 30 and 95 ?m.

Abstract: A method for the manufacture of reduced graphene oxide from kish graphite including: A. The provision of kish graphite, B. Optionally, a pre-treatment of kish graphite, C. The intercalation of kish graphite with a persulfate salt and an acid at room temperature to obtain intercalated kish graphite, D. The expansion of the intercalated kish graphite to obtain expanded kish graphite and E. An oxidation step of the expanded kish graphite to obtain graphene oxide and F. A reduction of graphene oxide into reduced graphene oxide.

Abstract: A method of heat treatment of a non-metallic or metallic item is provided. The method includes at least one step A) of heat transfer between the item and a heat transfer fluid A? including a fluid medium and nanoparticles. The heat transfer fluid has a heat transfer coefficient above the heat transfer coefficient of water. The method also includes at least one step B) of heat transfer between the item and a heat transfer fluid B? including a fluid medium and nanoparticles. The heat transfer fluid B? has a heat transfer coefficient different from the heat transfer coefficient of A? and above the heat transfer coefficient of water. The heat transfer fluids A? and B? are different.

Abstract: A method for the manufacture of microwave-reduced graphene oxide (MW-rGO) including: the provision of graphene oxide (GO), the reduction of GO into reduced graphene oxide (rGO) using a reducing agent and the reduction of rGO into MW-rGO by microwaving under air atmosphere in presence of a catalyst.

Abstract: A metallic substrate directly coated with a non-conductive primer, the non-conductive primer being at least partially coated with a paint, a method for the manufacture of this coated metallic substrate, a method for detecting strain deformation and the use the coated metallic substrate.

Abstract: A method of heat treatment of a non-metallic or metallic item is provided. The method includes at least one step of heat transfer between the item and a heat transfer fluid A?. The heat transfer fluid A? includes a fluid medium and nanoparticles having a lateral size between 26 and 50 ?m. The heat transfer fluid has a heat transfer coefficient below the heat transfer coefficient of water.

Abstract: A method of heat transfer between a metallic or non-metallic item and a heat transfer fluid is provided. The method includes a fluid medium and nanoparticles. A thickness/lateral size ratio of the nanoparticles is below 0.00044. The nanoparticles do not include carbon nanotubes.

Abstract: A coated steel substrate including a coating comprising nanographite having a lateral size between 1 and 60 ?m and a binder, wherein the steel substrate has the following compositions in weight percent: 0.31?C?1.2%, 0.1?Si?1.7%, 0.15?Mn?1.1%, P?0.01%, S?0.1%, Cr?1.0%, Ni?1.0%, Mo?0.1%, and on a purely optional basis, one or more elements such as Nb?0.05%, B?0.003%, Ti?0.06%, Cu?0.1%, Co?0.1%, N?0.01%, V?0.05%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration and a method for the manufacture of the coated steel substrate.

Abstract: A method of heat transfer between a metallic or non-metallic item and a heat transfer fluid including a fluid medium, hydrophobic nanoparticles having a lateral size between 26 and 50 ?m and a dispersing agent is provided. The nanoparticles concentration/dispersing agent concentration ratio in weight is between 3 and 18 and the nanoparticles do not include carbon nanotubes. A heat transfer fluid is also provided.

Abstract: A method of heat treatment of a non-metallic or metallic item is provided. The method includes at least one step of heat transfer between the item and a heat transfer fluid A?. The heat transfer fluid A? includes a fluid medium and nanoparticles having a lateral size between 26 and 50 ?m. The heat transfer fluid has a heat transfer coefficient below the heat transfer coefficient of water.

Abstract: A method of heat transfer between a metallic or non-metallic item and a heat transfer fluid including a fluid medium, hydrophobic nanoparticles having a lateral size between 26 and 50 ?m and a dispersing agent is provided. The nanoparticles concentration/dispersing agent concentration ratio in weight is between 3 and 18 and the nanoparticles do not include carbon nanotubes. A heat transfer fluid is also provided.

Abstract: A method of heat transfer between a metallic or non-metallic item and a heat transfer fluid is provided. The method includes a fluid medium and nanoparticles. A thickness/lateral size ratio of the nanoparticles is below 0.00044. The nanoparticles do not include carbon nanotubes.

Abstract: A method of heat treatment of a non-metallic or metallic item is provided. The method includes at least one step A) of heat transfer between the item and a heat transfer fluid A? including a fluid medium and nanoparticles. The heat transfer fluid has a heat transfer coefficient above the heat transfer coefficient of water. The method also includes at least one step B) of heat transfer between the item and a heat transfer fluid B? including a fluid medium and nanoparticles. The heat transfer fluid B? has a heat transfer coefficient different from the heat transfer coefficient of A? and above the heat transfer coefficient of water. The heat transfer fluids A? and B? are different.

Abstract: A system and method for increasing a number of lights operated and/or controlled by dimmer boxes of theatrical light systems. In one embodiment, a master box is coupled to a chain of slave boxes in series. The master box receives a control signal and generates a switching signal for controlling the master box and the slave boxes. The switching signal is transmitted from the master box to the slave boxes through the series connections. Each of the master box and the slave boxes include a light signal input and a plurality of light signal outputs, and select among the plurality of light signal outputs according to the switching signal.

Abstract: A system and method for increasing a number of lights operated and/or controlled by dimmer boxes of theatrical light systems. In one embodiment, a master box is coupled to a chain of slave boxes in series. The master box receives a control signal and generates a switching signal for controlling the master box and the slave boxes. The switching signal is transmitted from the master box to the slave boxes through the series connections. Each of the master box and the slave boxes include a light signal input and a plurality of light signal outputs, and select among the plurality of light signal outputs according to the switching signal.