Abstract: To provide a disposable diaper enabling reduction in re-wet amount and having an excellent speed of incorporating liquid regardless of concentration and configuration of a water-absorbing agent in an absorbent material. A water-absorbing agent having excellent Gel Capillary Absorption (GCA) and Free Gel Bed Permeability (FGBP) is obtained by crushing a crosslinked hydrogel polymer obtained in a polymerization step to have a specific weight average particle diameter while fluid retention capacity and a surface tension of a water-absorbing agent are adjusted in a specific range, drying the crushed crosslinked hydrogel polymer, and then adding a liquid permeability enhancer thereto during surface crosslinking or after surface crosslinking.

Abstract: Provided is a compound superior in an ATX inhibitory action and useful for the prophylaxis or treatment of diseases involving ATX. A carboxylic acid compound represented by the following formula (1) or a pharmacologically acceptable salt thereof: wherein each symbol is as defined in the SPECIFICATION.

Abstract: Described herein is a technique capable of efficiently removing a foreign substance in a reaction tube. According to one aspect of the technique, there is provided a substrate processing apparatus including: a reaction tube in which a substrate is processed; and a substrate retainer including a plurality of support columns configured to support the substrate, wherein at least one among the plurality of the support columns includes: a hollow portion through which an inert gas is supplied; and a gas supply port through which the inert gas is supplied toward an inner wall of the reaction tube.

Abstract: An object of the present invention is to provide a crystal of compound 1, which is useful as an antitumor agent, the crystal being stable, excellent in oral absorbability, highly chemically pure, and suitable for mass production. The present invention provides a crystal of compound 1 that exhibits an X-ray powder diffraction spectrum containing, at diffraction angles 2?±0.2°, characteristic peaks of at least 3 characteristic peaks selected from the group consisting of 5.8°, 9.8°, 12.2°, 14.0°, 15.3°, 21.1°, and 27.6°.

Abstract: A method for manufacturing a hollow spring member having a hollow steel spring rod having terminal sealed portions at both ends thereof. Each terminal sealed portion has a rotationally symmetric shape in which an axis passing through a center of the spring rod is an axis of symmetry. Each terminal sealed portion has an end wall portion including an end face; an arc-shaped smoothly curved surface between an outer peripheral surface of the spring rod and the end face, and a hermetically closed distal-end-center closure portion on the axis passing through the center of the spring rod. The method includes forming each of the end portions of the spring rod by forming a chamfered portion on an inner or outer peripheral side of the end portion of a hollow wire, the end portion having an opening portion at a distal end, heating the end portion of the hollow wire having the chamfered portion, and spinning the heated end portion to be gathered toward the axis from the outer peripheral side by a jig.

Abstract: A method of manufacturing a hollow coil spring which is made of a hollow wire in which a terminal sealed portion is formed on an end portion of the wire. The terminal sealed portion has a rotationally symmetric shape in which an axis passing through the center of the wire is the symmetric axis. The hollow coil spring includes an end wall portion, and an end face arc-shaped curved surface. The end wall portion includes an end face perpendicular to the axis. A distal-end-center closure portion is formed on the axis at the center of the end wall portion. A spring seat includes a base member and a sheet member. An end turn portion of the hollow coil spring is in contact with the sheet member. The end face of the end turn portion is opposed to a stopper wall of the spring seat.

Abstract: To provide a disposable diaper enabling reduction in re-wet amount and having an excellent speed of incorporating liquid regardless of concentration and configuration of a water-absorbing agent in an absorbent material. A water-absorbing agent having excellent Gel Capillary Absorption (GCA) and Free Gel Bed Permeability (FGBP) is obtained by crushing a crosslinked hydrogel polymer obtained in a polymerization step to have a specific weight average particle diameter while fluid retention capacity and a surface tension of a water-absorbing agent are adjusted in a specific range, drying the crushed crosslinked hydrogel polymer, and then adding a liquid permeability enhancer thereto during surface crosslinking or after surface crosslinking.

Abstract: Provided is a water-absorbing agent having an excellent ability to absorb and retain liquid and an excellent liquid suction power. The water-absorbing agent contains a polyacrylic acid (salt)-based water-absorbing resin as a main component and satisfies all of the following physical properties (a) to (e): (a) a weight average particle diameter (D50) is 300 ?m or more and less than 400 ?m; (b) a proportion of particles with a particle diameter of 600 ?m or more and less than 850 ?m is less than 10 weight %; (c) an average gap radius is 100 ?m or more and less than 180 ?m; (d) a CRC is 28 g/g or more and less than 34 g/g; and (e) an AAP is 24 g/g or more.

Abstract: Provided are: a water-absorbing agent achieving, in a balanced manner, both good physical properties and a decrease in speed of coloration with lapse of time even if the water-absorbing agent has a high moisture absorbing speed due to having a large specific surface area; and an absorbent body having a low ratio of pulp and achieving, in a balanced manner, both good physical properties suitable for a thin disposable diaper and a decrease in speed of coloration with lapse of time.

Abstract: Provided is an absorbent body that, for example, in a case where the absorbent body has been used in an absorbent article, such as a thin disposable diaper, having an absorbent body with a low proportion of fiber material (hydrophilic fibers) such as pulp, enables the absorbent article such as a disposable diaper to have an improved liquid trapping function on second and subsequent urinations over the conventional ones and particularly to have an increased amount of liquid trapped under load on the second and subsequent urinations over the conventional ones. Also provided is a water-absorbing resin that is used in the absorbent body and has an increased absorption capacity under load on the second and subsequent urinations over the conventional ones. The absorbent body includes a water-absorbing resin having a gel expansion force under a load of 4.83 kPa of 26 N or more.

Abstract: To provide a disposable diaper enabling reduction in re-wet amount and having an excellent speed of incorporating liquid regardless of concentration and configuration of a water-absorbing agent in an absorbent material. A water-absorbing agent having excellent Gel Capillary Absorption (GCA) and Free Gel Bed Permeability (FGBP) is obtained by crushing a crosslinked hydrogel polymer obtained in a polymerization step to have a specific weight average particle diameter while fluid retention capacity and a surface tension of a water-absorbing agent are adjusted in a specific range, drying the crushed crosslinked hydrogel polymer, and then adding a liquid permeability enhancer thereto during surface crosslinking or after surface crosslinking.

Abstract: A method for manufacturing a hollow spring member having a hollow steel spring rod having terminal sealed portions at both ends thereof. Each terminal sealed portion has a rotationally symmetric shape in which an axis passing through a center of the spring rod is an axis of symmetry. Each terminal sealed portion has an end wall portion including an end face; an arc-shaped smoothly curved surface between an outer peripheral surface of the spring rod and the end face, and a hermetically closed distal-end-center closure portion on the axis passing through the center of the spring rod. The method includes forming each of the end portions of the spring rod by forming a chamfered portion on an inner or outer peripheral side of the end portion of a hollow wire, the end portion having an opening portion at a distal end, heating the end portion of the hollow wire having the chamfered portion, and spinning the heated end portion to be gathered toward the axis from the outer peripheral side by a jig.

Abstract: The present invention provides a water absorbent agent that achieves both improvement in the water absorption time thereof and reduction in the residual monomer variation rate thereof. A present inventive method for producing a water absorbent agent having a water-absorbent resin as a main component, the method including a surface-crosslinking step for a water-absorbent resin and a mixing step for a sulfur-containing reducing agent aqueous solution, the method satisfies (1) a specific surface area of the water-absorbent resin, (2) an average droplet diameter of the sulfur-containing reducing agent aqueous solution, and a temperature of the aqueous solution, (3) stirring-mixing conditions, and (4) a heating and drying step conditions.

Abstract: In a magnet holder 4 including: a shaft attachment portion 41 to which a shaft 2 is press-fitted and fixed; and a magnet holding portion 42 that is provided on one side in an axial direction of the shaft attachment portion 41 and holds a periphery of a magnet 5, and provided with an undercut portion 50 that engages with the magnet 5 in the axial direction on an inner peripheral surface 43 of the magnet holding portion 42 facing the magnet 5, the magnet holding portion 42 and the shaft attachment portion 41 are integrally formed of sintered metal, an outer peripheral surface and an end surface of the magnet holding portion 42 and an inner peripheral surface of the shaft attachment portion 41 are sized, and the undercut portion 50 is formed by plastic deformation of the magnet holding portion 42.

Abstract: A hollow coil spring is made of a hollow wire in which a terminal sealed portion is formed on an end portion of the wire. The terminal sealed portion has a rotationally symmetric shape in which an axis passing through the center of the wire is the symmetric axis. The hollow coil spring includes an end wall portion, and an end face arc-shaped curved surface. The end wall portion includes an end face perpendicular to the axis. A distal-end-center closure portion is formed on the axis at the center of the end wall portion. A spring seat includes a base member and a sheet member. An end turn portion of the hollow coil spring is in contact with the sheet member. The end face of the end turn portion is opposed to a stopper wall of the spring seat.

Abstract: A method of manufacturing a hollow coil spring which is made of a hollow wire in which a terminal sealed portion is formed on an end portion of the wire. The terminal sealed portion has a rotationally symmetric shape in which an axis passing through the center of the wire is the symmetric axis. The hollow coil spring includes an end wall portion, and an end face arc-shaped curved surface. The end wall portion includes an end face perpendicular to the axis. A distal-end-center closure portion is formed on the axis at the center of the end wall portion. A spring seat includes a base member and a sheet member. An end turn portion of the hollow coil spring is in contact with the sheet member. The end face of the end turn portion is opposed to a stopper wall of the spring seat.

Abstract: Provided is a sintered bearing formed mainly of an iron structure (33) and a copper structure (31) which are formed of a partially diffusion-alloyed powder (11) of an iron powder (12) and a copper powder (13). The sintered bearing includes a copper structure (31d) formed of a granular elemental copper powder (13?) having a grain diameter of 45 ?m or less, the ratio of the copper structure (31d) being 10 mass % or less. With this, a further increase in strength of the sintered bearing can be realized.

Abstract: The present invention provides a novel method that is capable of detecting a trifluridine-related substance from a sample containing trifluridine or a salt thereof by high-performance liquid chromatography comprising two steps that are performed under gradient conditions. More specifically, the method is for detecting a trifluridine-related substance, the method comprising the step of subjecting a sample containing trifluridine or a salt thereof to high-performance liquid chromatography using a mobile phase composed of an organic phase and an aqueous phase, wherein the step of high-performance liquid chromatography comprises steps 1 and 2 that satisfy the following requirements: Step 1: the percentage of the organic phase in the entire mobile phase is 1 to 14% by volume; and Step 2: after step 1, elution is performed by applying a gradient of increasing the percentage of the organic phase in the entire mobile phase.

Abstract: The present invention provides a novel method that is capable of detecting a trifluridine-related substance from a sample containing trifluridine or a salt thereof by high-performance liquid chromatography comprising two steps that are performed under gradient conditions. More specifically, the method is for detecting a trifluridine-related substance, the method comprising the step of subjecting a sample containing trifluridine or a salt thereof to high-performance liquid chromatography using a mobile phase composed of an organic phase and an aqueous phase, wherein the step of high-performance liquid chromatography comprises steps 1 and 2 that satisfy the following requirements: Step 1: the percentage of the organic phase in the entire mobile phase is 1 to 14% by volume; and Step 2: after step 1, elution is performed by applying a gradient of increasing the percentage of the organic phase in the entire mobile phase.