Abstract: There is provided a metal plate antenna transmitting and receiving wireless signals conforming to a prescribed communication standard, wherein an antenna width is designed to satisfy radiation resistance achieving a prescribed standing wave ratio in a resonant mode in which a loop length of the metal plate antenna is 1.5 wavelength of a wireless signal conforming to the prescribed communication standard.

Abstract: A tube is used in fiber-reinforced plastic power transmission shaft. The tube comprises: a cylindrical body section; a connection portion that has a larger diameter than the body section; and an inclined portion that has an outer diameter that increases toward the second connection section from the main body part. The inclined section has formed thereon, a weak section that is damaged when a load input in the axial direction exceeds a prescribed value. With this configuration, the cost of the tube can be reduced, and when a prescribed load is input to the tube in the axial direction, the tube is reliably damaged.

Abstract: A fiber with which a further enhanced electric field intensity is obtained when a compressive force is applied across the longitudinal axis of the fiber. The fiber is composed of a potential generating filament having at least one interior angle of less than 120° in a contour shape in a sectional view in a direction perpendicular to a longitudinal axis of the fiber.

Abstract: A display device includes: a first substrate, a second substrate, a light-blocking portion, a pixel, and a wiring line. The second substrate has a main face opposite a main face of the first substrate. The light-blocking portion is disposed on the main face of the first substrate, including an opening, and blocking light. The pixel is disposed on the main faces of the first substrate and the second substrate and delimited by at least a part of the opening. The wiring line is disposed on the main face of the second substrate and at least partially overlapping the opening. The wiring line has a projection protruding toward a first substrate side. The projection has a surface including a curved surface and comprises a plurality of projections disposed at intervals in locations overlapping at least the opening.

Abstract: A detection device includes a panel having opposed main surfaces including an operation surface and a rear surface. A support structure is located on at least one of the main surfaces and prevents warping of the panel while permitting the operation surface to be deformed in response to a pressing operation applied to the operation surface. A sensor for sensing the pressing operation applied to the operation surface is provided on one of the main surfaces at a location where at least a portion of the sensor does not overlap the support structure in plan view.

Abstract: A tube for a power transmission shaft is made of fiber-reinforced plastic, rotated to transmit power, and includes a main body in a shape of cylinder about an axis, wherein the main body has an outer diameter thereof gradually decreasing from a central portion thereof toward both ends thereof, and has a thickness thereof gradually decreasing from said both ends toward the central portion.

Abstract: A tubular body of a power transmission shaft made of fiber-reinforced plastic is provided with a cylindrical main body portion, and a second connection portion continuous with an end portion of the main body portion and to which a stab shaft is joined. The main body portion is formed with a weak portion which fails when a load input in the direction of an axial line exceeds a predetermined value. A linear rupture portion is formed on an outer peripheral surface of the weak portion. In the present configuration, cost reduction and weight reduction of the tubular body are made possible, and the tubular body fails infallibly when a predetermined load is input to the tubular body in the direction of the axial line.

Abstract: An electric motor control method is an control method which is capable of selecting a first mode or a second mode as a control mode for controlling an operation of the electric motor according to an operating state of the electric motor. The method, when the second mode is selected as the control mode, stops a part of processing in the first mode, and continuously executes other processing including integral calculation except for the part of processing in the first mode. Also, the method, when the control mode is switched from the second mode to the first mode, starts the part of processing by using at least one control value obtained by continuing the other processing.

Abstract: A press sensor that includes a board, an adhesive material, and a sensor unit on a first main surface of the board with the adhesive material interposed therebetween. When an elastic modulus of the board is E1, an elastic modulus of the adhesive material is EA, and an elastic modulus of the sensor unit is ES, EA<ES and EA<E1.

Abstract: A detection device includes a panel having opposed main surfaces including an operation surface and a rear surface. A support structure is located on at least one of the main surfaces and prevents warping of the panel while permitting the operation surface to be deformed in response to a pressing operation applied to the operation surface. A sensor for sensing the pressing operation applied to the operation surface is provided on one of the main surfaces at a location where at least a portion of the sensor does not overlap the support structure in plan view.

Abstract: A titanium alloy member by mass %, Al: 4.0% to 9.0%, one or more selected from the group consisting of Fe, Cr, and Ni: 0.5% to 2.5% in total, C: 0% to 0.100%, N: 0% to 0.100%, H: 0% to 0.100%, O: 0% to 0.500%, and a remainder including Ti and impurities, in which the titanium alloy member includes a hard part having a Vickers hardness of 350 HV or greater.

Abstract: A composition, such as a cosmetic composition, is provided. The composition, such as a cosmetic composition, contains two or more kinds of phytoceramides (PHCs) having different lengths of alkyl chains, for example, in specific amounts.

Abstract: A rotation operation detection mechanism that includes a housing, an operation surface disposed on a first main surface of the housing, operation units formed integrally with the housing and protruding on the operation surface side, and a sensor that detects a stress generated in the housing when the operation units are rotated.

Abstract: A circuit board includes a substrate having an end surface, and a principal surface on which an electronic component is mounted, a first region, provided on the principal surface, and coated with a moistureproof agent, a second region, provided on the principal surface, and prohibited from being coated with the moistureproof agent, and a groove having two ends, formed in the principal surface, between the first region and the second region. The two ends of the groove reach the end surface of the substrate. The groove includes a guiding part, configured to guide the moistureproof agent overflowing from the first region into the groove, provided at a portion of the groove farthest away from the end surface.

Abstract: A method for manufacturing a tube body made of fiber-reinforced resin includes: an arranging step of arranging a fiber member on an outer peripheral surface of a mandrel made of resin by filament winding method; an inflating step of placing the mandrel with the fiber member arranged on it in a mold after the arranging step and inflating the mandrel by pressurizing an interior of the mandrel with the fiber member arranged on it; and a molding step of supplying resin in the mold after the inflating step to impregnate the fiber member with the resin and curing the impregnated resin to mold a tube body.

Abstract: A wearable device includes a biomedical electrode that can be placed on the target living subject for measurement and that detects the bioelectric potential according to the electric current coming from the target living subject for measurement; and a detection circuit that detects biological signals from the detected bioelectric potential. The biomedical electrode includes an elastic body that has a frame member having an opening and nonconductive; and includes a conductive fiber that is placed on the surface of the elastic body and that detects the bioelectric potential according to the electric current coming from the target living subject for measurement.

Abstract: A sensor is provided that includes a piezoelectric body; an electric resistor disposed on a first principal surface of the piezoelectric body; a vibration detection electrode disposed on a second principal surface of the piezoelectric body; a resistance voltage dividing circuit that has a first input terminal and a voltage dividing point; and a feedback processing circuit that has a second input terminal. Moreover, the electric resistor is connected to the voltage dividing point and the first input terminal, and the vibration detection electrode is connected to the second input terminal.

Abstract: The tube body intermediate includes: a carbon fiber disposed with respect to an outer circumferential surface of a mandrel such that the carbon fiber extends in an axial direction of the mandrel in a manner of being wound by less than one turn; and a first fixing member wound with respect to an outer circumferential surface of the mandrel such that the first fixing member extends in the axial direction of the mandrel in a manner of being wound over the carbon fiber by one or more turns in a circumferential direction.

Abstract: A tube body production method includes: a disposing step of disposing carbon fibers with respect to an outer circumferential surface of a mandrel so that the carbon fibers extend in the axial direction of the mandrel; and a molding step of impregnating the fiber body with a resin on the outer circumferential surface of the mandrel and then heating the resin to mold the resin, wherein the disposing step and the molding step are performed in a state where the axial direction of the mandrel coincides with an up-down direction.

Abstract: Provided is a tube body intermediate including: a carbon fiber disposed with respect to an outer circumferential surface of a mandrel so as to extend in an axial direction of the mandrel; and a fixing member having a tubular shape and disposed with respect to the outer circumferential surface of the mandrel so as to cover the carbon fiber. Also provided is a tube body production method including: disposing a fiber body with respect to an outer circumferential surface of a mandrel so that the fiber body extends in an axial direction of the mandrel; disposing a fixing member with a tubular shape with respect to the outer circumferential surface of the mandrel so that the fixing member covers the fiber body; and impregnating the fiber body with a resin on the outer circumferential surface of the mandrel and then heating the resin to mold the resin.