Abstract: A matrix material for a carbon fiber-reinforced composite comprises a matrix resin as a resin component. The matrix resin contains both a first epoxy resin and a second epoxy resin or only the first epoxy resin, further contains a third epoxy resin, and has an average epoxy equivalent weight of 109 to 162. The first epoxy resin contains a polyfunctional glycidylamine-type epoxy resin. The second epoxy resin contains at least one of a p-aminophenol-type epoxy resin and a tetramethylbiphenol-type solid epoxy resin. The third epoxy resin contains a bisphenol A-type epoxy resin having a weight-average molecular weight of 8000.

Abstract: A seamless steel pipe has a yield strength of 400 MPa or less and excellent HIC resistance. The seamless steel pipe includes: a chemical composition consisting, in mass %, of, C: 0.01 to 0.20%, Si: 0.05 to 0.50%, Mn: 0.3 to 2.0%, P: 0.02% or less, S: 0.01% or less, Cr: 0.02 to 0.2%, sol.Al: 0.001 to 0.100%, O: 0.0050% or less, N: 0.0100% or less, Ca: 0 to 0.0050%, Ti: 0 to 0.012%, and Nb: 0 to 0.012%, the balance being Fe and impurities; and a structure consisting, in area ratio, of 10 to 50% of ferrite and 0 to less than 5% of pearlite, the balance being tempered bainite and/or tempered martensite, and the number of inclusions each having a grain diameter of 50 mm or more is not more than 15 per 100 mm2, and the seamless steel pipe has a yield strength of 400 MPa or less.

Abstract: A matrix material for a carbon fiber-reinforced composite comprises a matrix resin as a resin component. The matrix resin contains both a first epoxy resin and a second epoxy resin or only the first epoxy resin, further contains a third epoxy resin, and has an average epoxy equivalent weight of 109 to 162. The first epoxy resin contains a polyfunctional glycidylamine-type epoxy resin. The second epoxy resin contains at least one of a p-aminophenol-type epoxy resin and a tetramethylbiphenol-type solid epoxy resin. The third epoxy resin contains a bisphenol A-type epoxy resin having a weight-average molecular weight of 8000.

Abstract: Low-alloy oil-well steel pipe includes a composition consisting, in mass %, of C: 0.40 to 0.65%, Si: 0.05 to 0.50%, Mn: 0.10 to 1.00%, P: 0.020% or less, S: 0.0020% or less, Cu: 0.15% or less, Cr: 0.40 to 1.50%, Mo: 0.50 to 2.50%, V: 0.05 to 0.25%, Ti: 0 to less than 0.01%, Nb: 0.01 to 0.2%, sol.Al: 0.010 to 0.100%, N: 0.006% or less, B: 0 to 0.0015%, and Ca: 0 to 0.003%, the balance being Fe and impurities. The structure has tempered martensite and 0 to less than 2% volume ratio of retained austenite. A grain size number of prior-austenite grain in the structure is 9.0 or more. An equivalent circular diameter of a sub-structure surrounded by a boundary having a crystal orientation difference of 15° or more from a packet boundary, a block boundary and a lath boundary is 3 ?m or less for the tempered martensite.

Abstract: The present invention has an object to provide a laminated molded body in which a thin fiber reinforced layer is laminated and having a favorable strength characteristic. The laminated molded body (1) includes a laminated portion (a laminated portion of SR1 on an upper side and SR1, for example) in which fiber reinforced layers SR1 to SRn, each having a thickness of 20 to 80 ?m in which a reinforcing fiber material is dispersed in a thermosetting resin material which serves as a matrix, are laminated, and a laminated portion in which a resin layer is laminated between the fiber reinforced layers (a laminated portion of SR2 on the upper side, TP1, and SR3, for example).

Abstract: The low alloy steel for oil country tubular goods according to the present invention has a chemical composition containing, by mass percent, C: 0.56 to 1.00%, Si: 0.05 to 0.50%, Mn: 0.05 to 1.00%, P: at most 0.025%, S: at most 0.010%, Al: 0.005 to 0.100%, Mo: 0.40 to 1.00%, V: 0.05 to 0.30%, and O: at most 0.010%, the balance being Fe and impurities, wherein the yield stress thereof is at least 862 MPa, and the half-value width of a [211] crystal surface obtained by X-ray diffraction is at most 0.50°.

Abstract: A method for producing a molded article of a fiber-reinforced plastic include molding a fiber-resin mixture containing an inorganic reinforcing fiber and a thermosetting resin under heat and pressure. The elapsed time since the thermosetting resin reached a molding temperature at which a hardening reaction proceeds is measured, the loss angle ? of the thermosetting resin is measured in a dynamic viscoelasticity measurement, and the relationship between the elapsed time and the loss angle ? is evaluated to calculate the range of the elapsed time, within which the loss angle ? is 0.55 to 1.57 rad after the loss angle ? reached the maximum value, as the pressurization start range. The fiber-resin mixture is heated to the molding temperature and pressure application to the fiber-resin mixture is started within the pressurization start range, to obtain the molded article of the fiber-reinforced plastic.

Abstract: A steel for oil country tubular goods includes, as a chemical composition, by mass %, C, Si, Mn, Al, Mo, P, S, O, N, and a balance containing Fe and impurities, wherein a full width at half maximum HW of a crystal plane corresponding to a (211) crystal plane of an ? phase and a carbon content expressed in mass % in the chemical composition satisfy HW×C1/2?0.38, the carbon content and a molybdenum content expressed in mass % in the chemical composition satisfy C×Mo?0.6, a number of M2C carbides having a hexagonal crystal structure and having an equivalent circle diameter of 1 nm or more is 5 pieces or more per one square micron, and an yield strength is 758 MPa or more.

Abstract: A steel has a chemical composition consisting of, by mass percent, C: 0.15-0.65%, Si: 0.05-0.5%, Mn: 0.1-1.5%, Cr: 0.2-1.5%, Mo: 0.1-2.5%, Ti: 0.005-0.50%, Al: 0.001-0.50%, and optionally at least one element selected from Nb: ?0.4%, V: ?0.5%, and B: ?0.01%, Ca: ?0.005° A, Mg: ?0.005%, and REM: ?0.005%, and the balance of Fe and impurities, wherein Ni, P, S, N and O as impurities are Ni: ?0.1%, P: ?0.04%, S: ?0.01%, N: ?0.01%, and O: ?0.01%. The steel is hot-worked into a shape and then sequentially subjected to heating the steel to a temperature exceeding the Ac1 transformation point and lower than the Ac3 transformation point and cooling. Then, a step of reheating the steel to a temperature not lower than the Ac3 transformation point and quenching the steel by rapid cooling, and a step of tempering the steel at a temperature not higher than the Ac1 transformation point are performed.

Abstract: A method for suppressing shock and storage cracking when manufacturing seamless steel pipes comprises hot piercing and hot rolling a billet consisting of, by mass percent controlled amounts of C, Si, Mn, Cr, Mo, Ti, and Al, with the balance being Fe and impurities of Ni, P, S, N, and O also in controlled amounts. Further heat treatment is performed, wherein a hot rolled steel pipe is direct quenched from a temperature of not lower than the Ar3 transformation point and the pipe is then subjected to heat treatment at a temperature of not lower than 450° C. and not higher than the Ac1 transformation point in heat treatment equipment for performing direct quenching. The steel pipe subjected to the heat treatment is reheated, quenched from a temperature of not lower than the Ac3 transformation point, and tempered at a temperature of not higher than the Ac1 transformation point.

Abstract: Provided is a resin composition for light scattering layer for use in forming a light scattering layer of an organic EL device, including: a binder composition including at least one type of resin (A); and light scattering particles (B). In a resin composition for light scattering layer of the invention, the light scattering particles (B) have an average particle diameter of 200 nm to 500 nm in the resin composition and have a content of 20 vol % or less of particles with a particle diameter of 600 nm or more with respect to a total amount of the light scattering particles (B); and a refractive index difference between the binder composition and the light scattering particles (B) is 0.1 or more.

Abstract: [Problem to be Solved] A gas fuel vehicle capable of detecting a gas leakage on the back side of a fuel fill port (inside of a vehicle body) extremely easily is provided. [Means for Solving the Problem] The gas fuel vehicle includes: a gas filling port that receives a supply of a gas fuel from a fuel supply device on the outside of a vehicle body; a communicating hole that connects the inside of the vehicle body and the outside of the vehicle body; a shielding member that shields the fuel fill port and the communicating hole from the outside of the vehicle body; and a gas fuel storage unit that stores the gas fuel supplied from the fuel supply device through the fuel fill port. A rod portion of a gas leakage detector is inserted into the communicating hole from the outside of the vehicle body, thereby detecting a gas leakage inside the vehicle body.

Abstract: A tank mounting technique of the invention effectively responds to a variation in size of a high-pressure tank T in its longitudinal direction and allows positioning of the high-pressure tank T around its longitudinal axis. A tank receiving recess 110 provided below a vehicle platform F has a pair of a front inclined surface 112F and a rear inclined surface 112R arranged to face each other across a concave groove 114. A side face of the high pressure tank T is brought into contact with both the inclined surfaces 112F and 112R. An end face of a tank positioning groove TVS formed on the high pressure tank T is brought into contact with a contact structure 121 of a tank edge bracket 120. This arrangement enables the high-pressure tank T to be positioned in a vehicle vertical direction and a vehicle front-back direction, as well as in the tank longitudinal direction (in a vehicle width direction).

Abstract: A method for suppressing shock and storage cracking when manufacturing seamless steel pipes comprises hot piercing and hot rolling a billet consisting of, by mass percent controlled amounts of C, Si, Mn, Cr, Mo, Ti, and Al, with the balance being Fe and impurities of Ni, P, S, N, and O also in controlled amounts. Further heat treatment is performed, wherein a hot rolled steel pipe is direct quenched from a temperature of not lower than the Ar3 transformation point and the pipe is then subjected to heat treatment at a temperature of not lower than 450° C. and not higher than the Ac1 transformation point in heat treatment equipment for performing direct quenching. The steel pipe subjected to the heat treatment is reheated, quenched from a temperature of not lower than the Ac3 transformation point, and tempered at a temperature of not higher than the Ac1 transformation point.

Abstract: A stabilizer configured to connect suspension devices situated right and left of an automobile, the stabilizer is characterized in that the stabilizer extends below a suspension member where a steering device of the automobile is fixed; at a side of the suspension member, the stabilizer extends above a lower arm and toward a front of the automobile; and the stabilizer is connected to the suspension devices.

Abstract: [Problem to be Solved] A gas fuel vehicle capable of detecting a gas leakage on the back side of a fuel fill port (inside of a vehicle body) extremely easily is provided. [Means for Solving the Problem] The gas fuel vehicle includes: a gas filling port that receives a supply of a gas fuel from a fuel supply device on the outside of a vehicle body; a communicating hole that connects the inside of the vehicle body and the outside of the vehicle body; a shielding member that shields the fuel fill port and the communicating hole from the outside of the vehicle body; and a gas fuel storage unit that stores the gas fuel supplied from the fuel supply device through the fuel fill port. A rod portion of a gas leakage detector is inserted into the communicating hole from the outside of the vehicle body, thereby detecting a gas leakage inside the vehicle body.

Abstract: A tank mounting technique of the invention effectively responds to a variation in size of a high-pressure tank T in its longitudinal direction and allows positioning of the high-pressure tank T around its longitudinal axis. A tank receiving recess 110 provided below a vehicle platform F has a pair of a front inclined surface 112F and a rear inclined surface 112R arranged to face each other across a concave groove 114. A side face of the high pressure tank T is brought into contact with both the inclined surfaces 112F and 112R. An end face of a tank positioning groove TVS formed on the high pressure tank T is brought into contact with a contact structure 121 of a tank edge bracket 120. This arrangement enables the high-pressure tank T to be positioned in a vehicle vertical direction and a vehicle front-back direction, as well as in the tank longitudinal direction (in a vehicle width direction).

Abstract: A stabilizer configured to connect suspension devices situated right and left of an automobile, the stabilizer is characterized in that the stabilizer extends below a suspension member where a steering device of the automobile is fixed; at a side of the suspension member, the stabilizer extends above a lower arm and toward a front of the automobile; and the stabilizer is connected to the suspension devices.

Abstract: Provided are an electric double-layer capacitor which can have a reduced internal resistance and an improved withstand voltage with a simple structure, and a method for manufacturing the capacitor. The electric double-layer capacitor uses an alloy of carbon and aluminum as a material of the electrode. The electrode is formed by applying carbon to an aluminum foil and heating the aluminum foil with carbon thereon to a temperature at which the aluminum foil and the carbon are alloyed.

Abstract: A seat back lock is included in a seat back of a vehicle. A knob is provided at the top of the seat back. A passenger in the vehicle pushes down the knob to cause the seat back to move from a standing position to a folding position on a seat. In the standing position, a striker extending from the body of the vehicle engages with a hook of the seat back lock. The seat back lock comprises a binding lever and a warning lever connected to the knob. Whenever the strike engages with the hook, the binding lever directly contacts the striker. If the striker incompletely engages with or disengages from the hook, the knob is pulled down by the warning lever to expose an indicator to permit the passenger to visually recognize it.