Abstract: A headlight determination apparatus includes a camera device, a target light recognition device, and a changing device. The camera device captures an image ahead of a vehicle at a predetermined frame rate. The target light recognition device recognizes target light from the image captured by the camera device. The changing device changes a wavelength of headlight of the vehicle by using a predetermined period slower than the predetermined frame rate. When the wavelength of the headlight is different from a wavelength of the target light and/or when a period of the wavelength of the headlight does not match a period of the wavelength of the target light, the target light recognition device recognizes that there is target light other than the headlight in front of the vehicle and controls light distribution of the headlight when there is target light other than the headlight in front of the vehicle.

Abstract: In the coating method, a pipe for transporting oil and/or gas mined from underground is provided. An acid curable resin is passed through the pipe to adhere the acid curable resin to at least a part of an inner wall of the pipe. Then, an acid curing agent is passed through the pipe to allow the acid curing agent to make contact with the acid curable resin such that the acid curable resin is cured.

Abstract: There is provided a coating material for coating at least a part of an inner wall of a pipe for transporting oil and or gas mined from underground. It contains an acid curing agent and an acid curable resin to be cured by the acid curing agent. The coating material passes through the pipe for transporting the oil and/or gas mined from the underground to coat at least a part of the inner wall of the pipe with a cured product of the acid curable resin. It is possible to provide the coating material for coating the inner wall of the pipe for transporting the oil and/or gas mined from the underground to prevent corrosion of the inner wall of the pipe by a high anti-corrosion effect thereof. There is also provided a method for coating the inner wall of the pipe with the cured product of the coating material.

Abstract: Coated particles of the present invention are adapted to be packed in fractures formed in a subterranean formation. Each of the coated particles includes: a core particle having an outer surface; and a surface layer coating at least a part of the outer surface of the core particle, wherein the surface layer contains an acid curing agent and an acid curable resin to be cured in the presence of an acid, and wherein the acid curing agent is composed of acidic compounds having acidic groups, and at least a part of the acidic groups of the acidic compounds are blocked by block compounds having reactivity with the acidic groups. This makes it possible to provide the coated particles adapted to be packed in the fractures formed in the subterranean formation and capable of maintaining high fluid permeability thereof, an injection material containing the coated particles, and a packing method for injecting such an injection material into the fractures.

Abstract: A resin composition of the present invention is used for forming surface layers coating at least a part of outer surfaces of particles, the particles adapted to be packed in fractures formed in a subterranean formation. The resin composition contains an acid curing agent having an acidic group, an acid curable resin to be cured in the presence of an acid, and a polyester. The acid curing agent exists in a state that the acidic group thereof is blocked by a compound having reactivity with the acidic group. This makes it possible to provide a resin composition which can reliably cure an acid curable resin at a required place, an injection material containing such a resin composition and particles, and a packing method for packing such particles in the fractures formed in the subterranean formation.

Abstract: An acid curing agent inclusion according to the present invention contains an acid curing agent having an acidic group; and a polyester. The acid curing agent exists in a state that the acidic group thereof is blocked by a compound having reactivity with the acidic group. This makes it possible to provide an acid curing agent inclusion capable of preparing a resin composition which can reliably cure an acid curable resin at a required place, and a method for producing (preparing) such an acid curing agent inclusion.

Abstract: The injection material 100 contains particles 2 adapted to be packed into the fracture, a resin composition and a fluid 20 for transferring the particles 2 and the resin composition into the fracture. Further, the resin composition is used for forming a surface layer covering at least a part of an outer layer of each of the particles 2. The resin composition contains an acid-curing agent and an acid-curing resin which can cure in the presence of an acid. The acid-curing agent has an acid group which is present in a state that the acid group is blocked by a compound having reactivity with respect to the acid group. The resin composition can reliably cure the acid-curing resin at a target location, the injection material containing the resin composition and the particles and a packing method for packing the particles into the fracture formed in the subterranean formation.

Abstract: The present disclosure is directed toward solutions, transparent films prepared from aromatic copolyamides, and a display element, an optical element or an illumination element using the solutions and/or the films. The copolyamides, which contain pendant carboxylic groups are solution cast into films using cresol, xylene, N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), dimethylsulfoxide (DMSO), or butyl cellosolve or other solvents or mixed solvent which has more than two solvents. When the films are thermally cured at temperatures near the copolymer glass transition temperature, after curing, the polymer films display transmittances >80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant.

Abstract: The present disclosure is directed toward solutions, transparent films prepared from aromatic copolyamides, and a display element, an optical element or an illumination element using the solutions and/or the films. The copolyamides, which contain pendant carboxylic groups are solution cast into films using cresol, xylene, N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), dimethylsulfoxide (DMSO), or butyl cellosolve or other solvents or mixed solvent which has more than two solvents. When the films are thermally cured at temperatures near the copolymer glass transition temperature, after curing, the polymer films display transmittances >80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant.

Abstract: According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces to perform heating. Another alternating magnetic field whose direction is reverse with respect to that of the former alternating magnetic field is partially generated in the end region on the opposed faces of the metal pieces and in either a region where the metal pieces exist or a region outside width ends of the metal pieces. This assures a uniform heating of the end region on the opposed faces of the metal pieces over their full width to reliably join the both metal pieces to each other.

Abstract: A method and apparatus for joining metal pieces wherein the rear end of a preceding metal piece and a front end of a metal piece are heated and then pressed together prior to hot finished rolling. The temperature the ends of the metal pieces are heated to is a temperature range between the solidus and liquidus line temperatures of the metal(s) to be joined.

Abstract: According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces to perform heating. Another alternating magnetic field whose direction is reverse with respect to that of the former alternating magnetic field is partially generated in the end region on the opposed faces of the metal pieces and in either a region where the metal pieces exist or a region outside width ends of the metal pieces. This assures a uniform heating of the end region on the opposed faces of the metal pieces over their full width to reliably join the both metal pieces to each other.

Abstract: Method and apparatus for joining metal pieces using induction heating. Metal pieces to be joined are placed end-to-end with a gap between them and induction heated in the thickness portion. To maximize speed and even heating edge-to-edge of the ends, members of a magnetic substance are provided in a gap between the inductor and the piece to be heated, thereby enhancing local heating effect by increasing magnetic flux density. Once heated, the ends are pressed together end-to-end for joining.

Abstract: An apparatus for joining metal pieces using induction heating. Preceding and succeeding metal pieces are followed by a carriage which carries an inductor. The inductor has the ability to move in the longitudinal direction of the metal pieces relative to the carriage to allow the inductor to move more or less upon the preceding or succeeding metal pieces to increase or decrease the induction heating effect, thereby taking into account any thickness variation of the metal pieces and yet still heating them evenly with regard to each other, prior to their being pressed against each other for joining before hot finishing rolling.

Abstract: According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces to perform heating. Another alternating magnetic field whose direction is reverse with respect to that of the former alternating magnetic field is partially generated in the end region on the opposed faces of the metal pieces and in either a region where the metal pieces exist or a region outside width ends of the metal pieces. This assures a uniform heating of the end region on the opposed faces of the metal pieces over their full width to reliably join the both metal pieces to each other.