Abstract: A turbine impeller includes: a base material which contains aluminum as a main element; and an anti-erosion coating which covers a surface of the base material. Accordingly, since liquid droplets hit the anti-erosion coating before the base material even when the liquid droplets flow into the rotating turbine impeller, the damage to the base material due to erosion is suppressed.

Abstract: A molten metal component estimation device including: an input device configured to receive measurement information about a refining facility including measurement results regarding an optical characteristic; a model database that stores model expressions and model parameters, regarding a blowing process reaction, including a model expression and model parameters representing a relation between the oxygen efficiency in decarburization and a carbon concentration in a molten metal in the refining facility; and a processor configured to: estimate component concentrations of the molten metal including the carbon concentration in the molten metal by using the measurement information, the model expressions and the model parameters; estimate the carbon concentration in the molten metal based on the measurement results; and determine the model expression and the model parameters to be used when estimating the component concentrations of the molten metal, based on the estimation result of the carbon concentration in t

Abstract: A ferrite composition includes a main component and an accessory component. The main component includes 43.0 to 51.0 mol % of iron oxide in terms of Fe2O3, 5.0 to 15.0 mol % of copper oxide in terms of CuO, 1.0 to 24.9 mol % of zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The accessory component includes 0.2 to 3.0 pts. wt. of silicon compound in terms of SiO2, 3.0 to 8.0 pts. wt. of cobalt compound in terms of Co3O4 (excluding 3.0 pts. wt.), and 0.2 to 8.0 pts. wt. of bismuth compound in terms of Bi2O3 with respect to 100 pts. wt. of the main component.

Abstract: An antenna unit used by being attached to window glass for a building includes a radiating element, a wave directing member arranged on an outdoor side with respect to the radiating element, and a conductor arranged on an indoor side with respect to the radiating element, wherein where a distance between the radiating element and the wave directing member is denoted as a, and where a relative permittivity of a medium constituted by a dielectric member between the radiating element and the wave directing member is denoted as ?r, the distance a is (2.11×?r?1.82) mm or more.

Abstract: In a method for oxygen-blowing refining of molten iron, an oxygen-containing gas as a main supply gas is supplied from an inlet side of a blowing nozzle for the oxygen-containing gas passing through an outer shell of the top-blowing lance and blown from the blowing nozzle while a control gas is jetted toward inside of the blowing nozzle for at least part of a period of the oxygen-blowing refining from a spout arranged in a side face of the nozzle at a site where the cross-sectional area of the nozzle minimum takes the minimum in the axial direction of the nozzle or a neighborhood thereof so that at least part of the spout exists in each space formed by dividing into two portions by an arbitrary plane passing through a central axis of the nozzle.

Abstract: A ferrite composition includes a main component that includes more than 44.0 mol % to 50.0 mol % or less of an Fe compound, 5.5 to 14.0 mol % of a Cu compound, 4.0 to 39.0 mol % of a Zn compound, and a balance of less than 40.0 mol % of a Ni compound. The ferrite composition further includes a subcomponent that includes, with respect to 100 parts by weight of the main component, more than 3.0 parts by weight to 13.0 parts by weight or less of an Si compound, more than 2.0 parts by weight to 10.0 parts by weight or less of a Co compound, and 0.25 to 5.00 parts by weight of a Bi compound. A weight ratio of the content of the Co compound to the content of the Si compound is 0.4 to 2.9.

Abstract: A ferrite composition includes a main component and an accessory component. The main component includes 18 to 30 mol % of iron oxide in terms of Fe2O3, 4 to 14 mol % of copper oxide in terms of CuO, 0 to 6 mol % of zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The accessory component includes 0.30 to 1.83 pts.wt. of silicon compound in terms of SiO2, 2.00 to 10.00 pts.wt. of cobalt compound in terms of Co3O4, and 1.00 to 3.00 pts.wt. of bismuth compound in terms of Bi2O3 with respect to 100 pts.wt. of the main component. A cobalt compound content in terms of Co3O4 divided by a silicon compound content in terms of SiO2 is a value of 5.5 to 30.0.

Abstract: A ferrite composition includes main-phase particles, first sub-phase particles, second sub-phase particles, and a grain boundary. At least 10% or more of the main-phase particles contain a portion whose Zn concentrations monotonously decrease from a particle surface toward a particle central part along a length of 50 nm or more. The first sub-phase particles contain Zn2SiO4. The second sub-phase particles contain SiO2. A total area ratio of the first sub-phase particles and the second sub-phase particles is 30.5% or more.

Abstract: A ferrite composition includes a main component and a sub-component. The main component includes 10.0 to 38.0 mol % of a Fe compound in terms of Fe2O3, 3.0 to 11.0 mol % of a Cu compound in terms of CuO, 39.0 to 80.0 mol % (excluding 39.0 mol %) of a Zn compound in terms of ZnO, and a balance of a Ni compound. The sub-component includes 10.0 to 23.0 parts by weight of a Si compound in terms of SiO2, 0 to 3.0 parts by weight (including 0 parts by weight) of a Co compound in terms of Co3O4, and 0.1 to 3.0 parts by weight of a Bi compound in terms of Bi2O3 with respect to 100 parts by weight of the main component.

Abstract: When the decarburization refining of molten iron is performed by top-blowing oxygen gas from the top blowing lance, the oscillation of molten iron, a bubble burst, and spitting due to the bubble burst are suppressed. A refining method for a converter includes decarburizing molten iron in the converter with a top blowing lance having Laval nozzles disposed at the lower end thereof by blowing oxygen gas on the surface of the molten iron in the converter through the Laval nozzles, in which one or both of an oxygen feeding rate from the top blowing lance and lance height LH are adjusted in such a manner that an oxygen accumulation index S(F) is 40 or less.

Abstract: A ferrite composition main component includes between 44.0 to 50.0 mol % of an Fe compound in terms of Fe2O3, between 5.5 to 14.0 mol % of a Cu compound in terms of CuO, between 4.0 to 39.0 mol % of a Zn compound in terms of ZnO, and a balance less than 40.0 mol % of a Ni compound in terms of NiO, The subcomponent includes, with respect to 100 parts by weight of the main component, between 3.0 parts to 13.0 parts by weight of an Si compound in terms of SiO2, between 2.0 to 10.0 parts by weight of a Co compound in terms of Co3O4, and between 0.25 to 5.00 parts by weight of a Bi compound in terms of Bi2O3. (The content of the Co compound in terms of Co3O4)/(the content of the Si compound in terms of SiO2) in weight ratio is 0.4 to 2.9.

Abstract: An actuating rod of an actuator is rotatably connected to a distal end portion of a link member, a connecting pin is integrally provided at a distal end portion of the actuator rod, a pin hole for allowing insertion of the connecting pin is penetrated and formed at a distal end portion of the link member, and a disc spring for biasing the distal end portion of the link member and the distal end portion of the actuating rod in an axial direction (both sides of the axial direction) of the actuating rod as directions opposite to each other between the distal end portion of the link member and the distal end portion of the actuator rod.

Abstract: The reliability of a semiconductor device is improved. A contact trench for coupling a field plate and a field limiting ring situated at the corner part of a semiconductor device is formed of a first straight line part and a second straight line part arranged line symmetrically with respect to the crystal orientation <011>. Respective one ends of the first straight line part and the second straight line part are coupled at the crystal orientation <011>, and the first straight line part and the second straight line part are set to extend in different directions from the crystal orientation <010> and the crystal orientation <011>.

Abstract: An anti-reflective structural body is constituted of an integrally molded article and includes an anti-reflective structure formed on a base surface that constitutes an outer surface of the molded article, and the anti-reflective structure includes a plurality of recesses, each being formed to be recessed from the base surface independently of mutually adjacent recesses and having an inclined surface, which is inclined with respect to the base surface and forms at least one punctiform or linear apex portion at a bottom portion.

Abstract: To improve current detection performance of a sense IGBT particularly in a low current region in a semiconductor device equipped with a main IGBT and the sense IGBT used for current detection of the main IGBT. At a peripheral portion located at an outermost periphery of an active region surrounded by a dummy region within a sense IGBT cell, an n+-type semiconductor region is formed over an upper surface of a well of a floating state adjacent to a trench gate electrode embedded into a trench at an upper surface of a semiconductor substrate and applied with a gate voltage.

Abstract: A ferrite sintered body of the invention includes; a main component including 48.65 to 49.45 mol % of iron oxide in terms of Fe2O3, 2 to 16 mol % of copper oxide in terms of CuO, 28.00 to 33.00 mol % of zinc oxide in terms of ZnO, and a balance including nickel oxide, and a subcomponent including boron oxide in an amount of 5 to 100 ppm in terms of B2O3 with respect to 100 parts by weight of the main component, in which the ferrite sintered body includes crystal grains having an average crystal grain size of 2 to 30 ?m.

Abstract: A second nozzle shaft of each variable nozzle has an outer diameter smaller than that of a first nozzle shaft. The first nozzle shaft is integrally formed on a first side surface of each variable nozzle. A portion is provided on a second side surface of each variable nozzle. The portion encloses the second nozzle shaft, and can contact a second nozzle ring. An inner nozzle flange and an outer nozzle flange which can contact a first nozzle ring are integrally formed on base sides of the first nozzle shaft on a blade surface and a blade surface of each variable nozzle, respectively.

Abstract: A turbine housing includes: a main body portion; an insertion hole, which is formed in the main body portion, and has one end opened to an outside of the main body portion of the turbine housing and another end communicated to the turbine scroll flow passage; a pipe member, which is formed separately from the main body portion, is arranged in the insertion hole, and has a communication flow passage having an inflow port as an inlet for exhaust gas and being opened to the turbine scroll flow passage; and step surfaces (step portions), which are formed on the pipe member and the insertion hole, and are opposed to each other.