Abstract: An object of this invention is to provide a streptavidin mutant reduced in affinity to the naturally-occurring biotin, and to provide a modified biotin which shows a high affinity to such streptavidin mutant reduced in affinity to the naturally-occurring biotin. This invention can provide a compound composed of a dimer of modified biotin, a streptavidin mutant, and usage of them.

Abstract: A magnetic field generator may include a magnetic field generation part including a resonance part including an inductor and a capacitor connected with each other, and which is structured so that an AC current is flowed between the inductor and the capacitor by charging electric charge to the capacitor and discharging the electric charge to generate a magnetic field by a resonance; a current direction monitoring section structured to monitor a direction of a current flowing through the inductor of the magnetic field generation part; and a judging section structured to control a timing for charging in the magnetic field generation part depending on the direction of the current flowing through the inductor which is obtained by monitoring of the current direction monitoring section.

Abstract: A method of fabricating an acoustic wave device includes: bonding a support substrate to a piezoelectric substrate on which an IDT is to be formed; forming a modified region in the support substrate by irradiation of a laser beam; and cutting the support substrate and the piezoelectric substrate in the modified region, wherein a distance from a boundary face between the support substrate and the piezoelectric substrate to an edge portion of the modified region at the boundary face side is greater than or equal to 20 ?m and less than 69 ?m.

Abstract: A card reader for use with a card incorporated with an IC chip may include an insertion port into which the card is inserted; a metal detection mechanism structured to detect an external connection terminal of the IC chip provided in the card; and a tip end detection mechanism structured to detect a tip end in an inserting direction of the card inserted into the insertion port. The metal detection mechanism and the tip end detection mechanism may be disposed so that, when the tip end detection mechanism detects the tip end in the inserting direction of the card inserted into the insertion port in a correct posture, the metal detection mechanism detects the external connection terminal.

Abstract: A card reader for use with a card may include a card insertion part formed with an insertion port into which the card is inserted; and a magnetic head provided in the card insertion part and structured to contact with the card. A magnetic gap in a straight shape may be formed at a tip end of the magnetic head where the card is to be contacted. When a forming direction of the magnetic gap formed in the straight shape is a gap direction, the gap direction may be inclined with respect to a first direction perpendicular to an inserting direction of the card when viewed in a thickness direction of the card inserted into the insertion port.

Abstract: A screw pair includes first and second screws having an outer circumferential surface on which a groove is spirally formed, and transports a raw material in a first direction along each of axis centers. An inner surface of the groove of each of the screws includes a first surface, which faces in the first direction, and in which the outer circumferential surfaces of the screws are formed to coincide with each other without a gap therebetween in the state where the screws mesh with each other, and a second surface, which faces in a second direction opposite to the first direction, and which forms a gap between the outer circumferential surfaces of the screws in the state where the screws mesh with each other.

Abstract: A card reader for use with a card may include a card insertion part formed with an insertion port into which the card is inserted; and a magnetic head provided in the card insertion part and structured to contact with the card. A magnetic gap in a straight shape may be formed at a tip end of the magnetic head where the card is to be contacted. When a forming direction of the magnetic gap formed in the straight shape is a gap direction, the gap direction may be inclined with respect to a first direction perpendicular to an inserting direction of the card when viewed in a thickness direction of the card inserted into the insertion port.

Abstract: According to the present invention, devolatilization of a synthetic resin formed from a polymer or synthetic rubber can be improved and the synthetic resin can be foamed at a low temperature by injecting a devolatilization agent through a devolatilization agent injection nozzle provided in a downstream end segment cylinder of a cylinder assembly. In a vented twin-screw kneading extrusion apparatus and extrusion method according to the present invention, a devolatilization agent, which is injected through a downstream end devolatilization agent injection nozzle (7c) provided on a downstream end segment cylinder constituted by a segment cylinder (1g) positioned on a downstream end of a cylinder assembly (1), is dispersed in molten resin in the downstream end segment cylinder (1g) and kneaded by a downstream end kneading portion (6c) such that the molten resin is foamed by the devolatilization agent and then extruded.

Abstract: It is an object of the present invention to provide a mutant streptavidin with a reduced affinity for natural biotin, and also to provide a modified biotin having a high affinity for the mutant streptavidin with a reduced affinity for natural biotin. According to the present invention, there is provided a reagent kit for use in treatments or diagnoses, which comprises: (a) a mutant streptavidin with a reduced affinity for natural biotin or biocytin; and a modified biotin having a high affinity for the above-described mutant streptavidin.

Abstract: Provided is a card reader that accepts and processes the short side of a substantially rectangular IC card conforming to international and JIS standards, said card reader being capable of easily determining whether or not the orientation of the inserted IC card is correct. This card reader comprises: an insertion port wherein a card having a built-in IC chip is inserted; a metal detection mechanism for detecting an external connection terminal of the IC chip formed in the card; and a tip detection mechanism for detecting the tip, in the insertion direction, of the card inserted from the insertion port. In this card reader, the metal detection mechanism and the tip detection mechanism are provided such that, when the tip detection mechanism detects the tip, in the insertion direction, of the card inserted in the correct orientation from the insertion port, the metal detection mechanism is arranged at a position that detects the external connection terminal.

Abstract: Provided is a sealing material used for sealing high-pressure hydrogen. The sealing material is a molded article of a rubber composition containing a rubber component, fibers, and a carbon black.

Abstract: A method for manufacturing an acoustic wave device includes: forming reforming regions in a substrate along a first direction and a second direction intersecting the first direction by irradiating the substrate with a laser beam under different conditions in the first direction and the second direction, the substrate including a piezoelectric substrate on which an IDT (InterDigital Transducer) is formed, and linear expansion coefficients of the piezoelectric substrate being different in the first direction and the second direction; and cutting the substrate in the first direction and the second direction at the reforming regions.

Abstract: A method for manufacturing an acoustic wave device includes: forming an altered domain in a supporting substrate by irradiating the supporting substrate with a laser light, a piezoelectric substrate being joined to an upper surface of the supporting substrate; forming a groove on an upper surface of the piezoelectric substrate so as to overlap with the altered domain; and cutting the supporting substrate at the groove.

Abstract: An acoustic wave device includes: a support substrate composed of lithium tantalate in multi-polarization condition; an element substrate that is provided on an upper face of the support substrate and is composed of lithium tantalate, a lower face of the element substrate being jointed to the upper face of the support substrate; and a comb-like electrode that is provided on an upper face of the element substrate and excites an acoustic wave.

Abstract: A screw pair includes first and second screws having an outer circumferential surface on which a groove is spirally formed, and transports a raw material in a first direction along each of axis centers. An inner surface of the groove of each of the screws includes a first surface, which faces in the first direction, and in which the outer circumferential surfaces of the screws are formed to coincide with each other without a gap therebetween in the state where the screws mesh with each other, and a second surface, which faces in a second direction opposite to the first direction, and which forms a gap between the outer circumferential surfaces of the screws in the state where the screws mesh with each other.

Abstract: A screw-type fine powder raw material feeding device includes a screen (5) wound on the outer periphery of a tubular receiving member (21) and a plurality of annular metal fixtures (23) for bringing the screen (5) into close contact with the tubular receiving member (21) side. A gap (D) between the screen (5) and an outer diameter of a screw (2) is set to 1 mm to 10 mm, only a gas separated from the fine powder raw material is discharged to the outside from the gas vent ports (20), and the fine powder raw material is fed into a cylinder (1a), with no fine powder raw material being leaked to the outside from the screen (5). The invention also relates to a method of using the device.

Abstract: An acoustic wave device includes a supporting substrate made of lithium tantalate, an element substrate made of lithium tantalate, and having a lower surface bonded to and arranged on an upper surface of the supporting substrate, and a comb-like electrode formed on an upper surface of the element substrate and exciting an acoustic wave. A propagation direction of the acoustic wave in the element substrate is an X-axis of the acoustic wave. A normal direction of the upper surface of the supporting substrate is an X-axis or a Y-axis of the supporting substrate. The propagation direction of the acoustic wave is not parallel to a Z-axis of the supporting substrate.

Abstract: A method of fabricating an acoustic wave device includes: bonding a support substrate to a piezoelectric substrate on which an IDT is to be formed; forming a modified region in the support substrate by irradiation of a laser beam; and cutting the support substrate and the piezoelectric substrate in the modified region, wherein a distance from a boundary face between the support substrate and the piezoelectric substrate to an edge portion of the modified region at the boundary face side is greater than or equal to 20 ?m and less than 69 ?m.

Abstract: An acoustic wave device includes: a support substrate composed of lithium tantalate in multi-polarization condition; an element substrate that is provided on an upper face of the support substrate and is composed of lithium tantalate, a lower face of the element substrate being jointed to the upper face of the support substrate; and a comb-like electrode that is provided on an upper face of the element substrate and excites an acoustic wave.

Abstract: An acoustic wave device includes a supporting substrate made of lithium tantalate, an element substrate made of lithium tantalate, and having a lower surface bonded to and arranged on an upper surface of the supporting substrate, and a comb-like electrode formed on an upper surface of the element substrate and exciting an acoustic wave. A propagation direction of the acoustic wave in the element substrate is an X-axis of the acoustic wave. A normal direction of the upper surface of the supporting substrate is an X-axis or a Y-axis of the supporting substrate. The propagation direction of the acoustic wave is not parallel to a Z-axis of the supporting substrate.