Abstract: A polycarbonate resin comprising a structural unit represented by the following formula (1), wherein weight-average molecular weight Mw measured by size-exclusion chromatography using polymethyl methacrylate as a standard sample is 50,000 or larger and 500,000 or smaller:

Abstract: A polyphenylene ether having a predetermined structure.

Abstract: The present disclosure provides a polyphenylene ether composition having a high glass transition temperature and a long-term solubility in a solvent, and exhibiting a low viscosity when being dissolved in a solvent. The polyphenylene ether composition of the present disclosure contains 60 mol % or more of a polyphenylene ether having the structure of Formula (1), wherein the ratio of the integrated value of the peak appearing at 7.6 to 8.3 ppm to the integrated value of the peak derived from the structure of the following Formula (2) in a 1H-NMR measurement result is 1 or less, and the number average molecular weight in terms of polystyrene is 500 to 15,000 g/mol.

Abstract: A polyphenylene ether having a predetermined structure.

Abstract: A spring hinge for an eyewear includes a front frame having an attachment portion and a first articulation hinge element, a temple connected to the front frame and having a hollow housing at an end portion, a cover member with a front bump for covering an outside opening of the temple, and a U-shaped slide member with a second articulation hinge element. The U-shaped slide member is housed in the hollow housing to be slidable along a longitudinal direction of the temple. A compression coil spring is provided between the front bump and the U-shaped member in a compressed state. The temple and the attached portion are rotationally connected at the first and second articulation hinge elements. When the temple is pushed outwardly, the temple is opened from a position perpendicular to the front frame, while the compression coil spring is being compressed.

Abstract: When high purity silicon is produced through a gas-phase reaction between silicon tetra-chloride and zinc in a reaction furnace, the produce silicon is obtained as block or molten state. after the reaction in which the silicon is not in contact with air and reaction temperature is maintained at melting point of the silicon or less.

Abstract: When high purity silicon is produced through a gas-phase reaction between silicon tetra-chloride and zinc in a reaction furnace, the produce silicon is obtained as block or molten state. after the reaction in which the silicon is not in contact with air and reaction temperature is maintained at melting point of the silicon or less.

Abstract: A spring hinge for an eyewear includes a front frame having an attachment portion and a first articulation hinge element, a temple connected to the front frame and having a hollow housing at an end portion, a cover member with a front bump for covering an outside opening of the temple, and a U-shaped slide member with a second articulation hinge element. The U-shaped slide member is housed in the hollow housing to be slidable along a longitudinal direction of the temple. A compression coil spring is provided between the front bump and the U-shaped member in a compressed state. The temple and the attached portion are rotationally connected at the first and second articulation hinge elements. When the temple is pushed outwardly, the temple is opened from a position perpendicular to the front frame, while the compression coil spring is being compressed.

Abstract: When high purity silicon is produced through a gas-phase reaction between silicon tetra-chloride and zinc in a reaction furnace, the produce silicon is obtained as block or molten state. after the reaction in which the silicon is not in contact with air and reaction temperature is maintained at melting point of the silicon or less.

Abstract: An eyewear temple structure includes an attachment portion to be attached to a frame of an eyewear, and a temple attached to the attachment portion. The temple includes a housing having a hollow space therein, a front opening, a side opening, and a bump formed adjacent to the side opening. A guide member is slidably situated in the housing and includes a second projecting portion formed at one end to rotationally engage the attachment portion, and an abutment portion formed at the other end thereof. A compression coil spring is situated in the housing between the bump and the abutment portion to urge the guide member in a direction away from the bump. The temple is rotationally attached to the attachment portion through a resilient force of the coil spring.

Abstract: An eyewear temple structure includes an attachment portion to be attached to a frame of an eyewear, and a temple attached to the attachment portion. The temple includes a housing having a hollow space therein, a front opening, a side opening, and a bump formed adjacent to the side opening. A guide member is slidably situated in the housing and includes a second projecting portion formed at one end to rotationally engage the attachment portion, and an abutment portion formed at the other end thereof. A compression coil spring is situated in the housing between the bump and the abutment portion to urge the guide member in a direction away from the bump. The temple is rotationally attached to the attachment portion through a resilient force of the coil spring.

Abstract: A temple structure for eyeglasses is formed of a spring hinge box, a piece of elastic metal wire folded in two, a flange connecting the spring fringe box and the piece of elastic metal wire, and an ear chip. The spring hinge box has a one-piece knuckle and a hollow with an opening, on its front side, and a longitudinally frontward threaded hole at the end of its rear side. The piece of elastic metal wire folded in two is designed to have its two free ends located near the ear of a wearer with its head portion positioned on the side face of the spring hinge box and its arm portion formed in a streamline or tear-drop shape to have a hollow. The flange, provided with a screw hole, is positioned in the hollow, through which a screw is driven into the threaded hole provided at the rear end of the spring hinge box, thereby fixing the piece of elastic metal wire onto the side face of the spring hinge box. The two free ends of the piece of elastic metal wire are fit in the ear chip.

Abstract: A semiconductor device including a register bank circuit includes a register array for storing data. The register array has a matrix structure which is formed of a plurality of banks arranged in a row of the matrix structure and a plurality of registers arranged in a column thereof. A bank selector selects one of the banks while the one to be selected is specified. A register selector selects one of the registers in the one bank selected by the bank selector means, so that the selected register is coupled to a bus.

Abstract: A semiconductor device including a register bank circuit including a register array for storing data. The register array has a matrix structure formed by a plurality of banks arranged in a row and a plurality of registers arranged in a column. Each bank is a group of a predetermined number of registers. A bank selector selects one of the banks, and a register selector selects a register corresponding to the bank selected by the bank selector. The selected register is coupled to a bus.

Abstract: A laser working device for working a workpiece moving in one direction has a converging lens for focusing and directing approximately vertically a laser beam onto the workpiece, a gas injector for injecting and directing an inert gas forwardly with respect to the one direction and toward where the laser beam is focused, and an air injector for forming a pressurized air curtain between the converging lens and workpiece so that the air curtain crosses the vertical laser beam.

Abstract: A method for improving the characteristics of fused slag material is disclosed. This improved method results in a fused slag having resistance against pulverization at the cooling process or generation of yellowish turbid water due to contact of slag lumps with rain water, this method characterized by forming a slag treatment material by rough crushing a substantially dehydrated heat-treated material containing boron, and adding that slag treatment material to molten slag.

Abstract: A steel slag or iron slag which is a by-product generated at the time of steel or iron metallurgy and a method of manufacturing the same are disclosed. This slag is characterized in that it contains at least 0.15 wt % of boron component in the form of B.sub.2 O.sub.3 and has resistance against degradation in the fused slag cooling-down process and against generation of yellowish turbid water at the time of contact of slag with rain water.

Abstract: A method of treating a plating sludge is disclosed, wherein a plating sludge, whose water content is decreased to not higher than 10% by weight, is mixed with scale, dust, both of which are formed in the alloy steel-making step, a binder and a carbonaceous material, and water is added to the mixture to adjust the water content of the mixture to 7-30% by weight, the mixture is kneaded and then molded into a briquet, and the briquet is subjected to a strength-improving treatment. The resulting briquet can be used as a raw material for ferroalloy. When the briquet is subjected to a reduction smelting to recover a metal, the metal can be used as a raw material for alloy steel.

Abstract: A hermetically sealed arc furnace for producing stainless steel is disclosed which makes use, as a main raw material, a semi-reduced chrome ore pellet and a reduced iron ore pellet and by which these pellets are melted, decarburized and finally refined under a reduced pressure said hermetically sealed arc furnace capable of adjusting its interior reduced pressure, and particularly including a vacuum-tight seal between the furnace lid and furnace body, a telescopically sealed gap between the lid and an electrode extending therethrough and an exhaust opening detachably connected to a vacuum pump for reducing the internal pressure within the furnace.

Abstract: A method for improving the characteristics of fused slag material is disclosed. This improved method results in a fused slag having resistance against pulverization at the cooling process for generation of yellowish turbid water due to contact of slag lumps with rain water, this method characterized by forming a slag treatment material by rough crushing a substantially dehydrated heat-treated material containing boron, and adding that slag treatment material to molten slag.