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A textile includes a composite twisted yarn, including a spun yarn and a water-soluble yarn. The spun yarn has a twist direction that is a reverse of a twist direction of the composite twisted yarn. The water-soluble yarn is twisted with the spun yarn. A twist number of the composite twisted yarn is 1.3 to 3 times a twist number of the spun yarn, and a weight ratio of the spun yarn relative to the water-soluble yarn [spun yarn] / [water-soluble yarn] is 20 / 80 to 98 / 2. An other textile may also include an elongated elastic yarn having an elongation of 2 to 5 times an original length of the elastic yarn in a non-elongated position, and the elongated elastic yarn is twisted with the water-soluble yarn and the spun yarn. A twist number of the composite twisted yarn is 0.3 to 3 times a twist number of the spun yarn.

The present invention relates to a casting method which employs rapid solidification of metal, rare-earth metal or the like, as well as to a casting apparatus and a cast alloy. A centrifugal casting method includes the steps of pouring a molten material onto a rotary body; sprinkling the molten material by the effect of rotation of the rotary body; and causing the sprinkled molten material to be deposited and to solidify on the inner surface of a rotating cylindrical mold. The axis of rotation of the rotary body and the axis of rotation of the cylindrical mold are caused not to run parallel to each other. The centrifugal casting method can attain a decrease in average deposition rate. As a result, generation of the dendritic alphaFe phase or generation of a segregation phase of Mn or the like is suppressed, thereby realizing a high-performance R-T-B-type rare-earth magnet alloy.

Disclosed is a photoresist stripping solution consisting essentially of (a) a quaternary ammonium hydroxide (e.g., tetramethylammonium hydroxide), (b) at least one water-soluble organic solvent selected from glycols and glycol ethers (e.g., propylene glycol, ethylene glycol, diethylene glycol monobutyl ether), and (c) a non-amine water-soluble organic solvent (e.g., dimethyl sulfoxide, N-methyl-2-pyrrolidone). The photoresist stripping solution of the invention has an excellent photoresist strippability, not causing damage of swelling / coloration to acrylic transparent films used in production of liquid-crystal panels and not causing damage to electrode materials. In particular, it has an excellent photoresist strippability to remove even a thick-film negative photoresist (photosensitive dry film) used in production of semiconductor chip packages (especially, wafer-level chip size packages, W-CSP), not causing damage to copper.

The present invention provides a process for producing water-absorbing resin particles which possess a high water retention capacity (absorbing capacity), a high water-absorbing capacity under pressure, and a high gel strength and a small amount of water-soluble substance and is favorably usable in sanitary materials; water-absorbing resin particles obtained by the process; and absorbent materials and absorbent articles made by using the particles. More specifically, the water-absorbing resin particles are produced by a process for producing water-absorbing resin particles, comprising a step of a post-crosslinking reaction by adding a post-crosslinking agent in at least two stages to a water-absorbing resin particle precursor obtained by polymerization of a water-soluble ethylenic unsaturated monomer to carry out the post-crosslinking reaction.

A system for capturing and displaying not directly-viewable spaces near a vehicle includes an apparatus for image capturing and an apparatus for image display. The apparatus for image capturing captures at least two arbitrary points Q and R. A ground plane is spanned by the Cartesian coordinates xv and yv, and xv lies in the vehicle middle plane. The display displays an image that includes an image Q′ of the point Q and an image R′ of the point R on a display plane spanned by the Cartesian coordinates xv′ and yv′, with xv′ lying on a reproduction of the vehicle middle plane. A projection QR, xv of the vector QR onto xv and a projection Q′R′, xv′ of a vector Q′R′ onto xv′ have the same direction, and a projection QR, yv of the vector QR onto yv and a projection Q′R′, yv′ of a vector Q′R′ onto yv′ have the same direction.

A screw having stabilized strength, combination with a driver bit that best fits the screw, and a header punch for producing the screw. The screw having stabilized strength has letter Y-shaped bit-fitting grooves formed in the head portion of the screw. Forming the grooves makes fitting of a corresponding driver to the screw easy, prevents occurrence of a cam-out phenomenon to enhance work efficiency, makes torque transmission to be made smoothly and sufficiently, and stabilizes strength. The bit-fitting grooves are formed in a letter Y shape that is substantially equally divided into three sections in the circumferential direction, the grooves being formed at positions required distances away from the central portion of the screw head. The width of each of the grooves extending in radial directions from the central portion of the bit-fitting grooves is set so that the grooves are gradually expanded and substantially equally spaced with spacing each equal to the width of a boundary section between adjacent grooves. Further, the outer peripheral end wall surface of each bit-fitting groove is made substantially vertical from an opening edge section up to a required depth. The outer peripheral end wall surface is displaced downward from a lower edge section of the wall surface toward the central portion of the screw head, and the center where the wall surfaces meet are formed as a substantially conical bottom surface.

A wireless IC device that improves radiation gain without increasing substrate size and easily adjusts impedance, includes a multilayer substrate including laminated base layers. On a side of an upper or first main surface of the multilayer substrate, a wireless IC element is arranged to process a high-frequency signal. On a side of a lower or second main surface of the multilayer substrate, a first radiator is provided and is coupled to the wireless IC element via a feeding circuit including first interlayer conductors. On the side of the first main surface, a second radiator is provided and is coupled to the first radiator via second interlayer conductors.