Abstract: A golf club head 1 having a hollow (i) therein comprises a face portion 2 having a face 2a for striking a ball, a crown portion 3 forming the head top surface, and a sole portion 4 forming a bottom of the head. One of or each of the crown portion 3 and the sole portion 4 is provided with a plurality of grooves bent in the same direction.

Abstract: A steel sheet, a plated steel sheet, and methods for producing a hot-rolled steel sheet, a cold-rolled full hard steel sheet, and a steel sheet. The steel sheet has a specified composition and a microstructure including 0 to 80% of polygonal ferrite and 20 to 100% of a total of martensite, bainite, and residual austenite in terms of an area ratio within 20 ?m of the steel sheet surface. The content of Mn in martensite present within 20 ?m of the steel sheet surface ([Mn]SM) and the content of Mn in a bulk ([Mn]B) satisfy [Mn]SM/[Mn]B?1.5. At a location 300 ?m from the steel sheet surface, an area ratio of the martensite is in a range of 20 to 50%.

Abstract: A semiconductor integrated circuit and corresponding display panel and electronic apparatus. A pixel element includes a self-luminous element and a drive transistor connected to a power supply line. In an emission period of the self-luminous element, an active voltage and an intermediate voltage are sequentially applied between the power supply line and a potential line with a pulse-shaped waveform such that a predetermined luminance duration is obtained in the emission period. In a non-emission period of the self-luminous element, an off-state voltage is applied between the power supply line and the potential line so as to maintain the self-luminous element in a non-emission state.

Abstract: A steel sheet having excellent fatigue resistance as a material for automobile parts and a TS of 590 MPa or more, and a method for producing the same. The steel sheet has a composition comprising, by mass %, C: 0.04% or more and 0.15% or less, Si: 0.3% or less, Mn: 1.0% or more and 2.6% or less, P: 0.1% or less, S: 0.01% or less, Al: 0.01% or more and 0.1% or less, N: 0.015% or less, one or two of Ti and Nb: 0.01% or more and 0.2% or less in a total, and the balance being Fe and unavoidable impurities. The steel sheet has 50% or more of ferrite and 10% or more and 50% or less of martensite in terms of an area ratio, and a microstructure in which a standard deviation of nano-hardness is 1.50 GPa or less and tensile strength of 590 MPa or more.

Abstract: A turbomachine of the present disclosure includes a rotating shaft, an impeller, a bearing, and a casing. The casing is arranged around the impeller in a circumferential direction of the rotating shaft. A volute is defined in the casing as a passage of a working fluid that is compressed or expanded by rotation of the impeller. The casing includes one or more ribs. The one or more ribs are arranged only in a diagonal area, or the one or more ribs are a plurality of ribs and a degree of reinforcement of the diagonal area by the plurality of ribs is larger than a degree of reinforcement of a tongue portion area by the plurality of ribs.

Abstract: A high-strength hot-dip galvanized steel sheet having a surface coated with a hot-dip galvanized coating, the steel sheet having a chemical composition comprising C: more than 0.10% and less than 0.18%, Si: 0.01 to 1.00%, Mn: 1.5 to 4.0%, P: 0.100% or less, S: 0.020% or less, Al: 0.010 to 0.500%, Cr: 0.010 to 2.000%, Nb: 0.005 to 0.100%, Ti: 0.005 to 0.100%, B: more than 0.0005% and 0.0030% or less, and Fe and incidental impurities, and a method for producing the same. The steel sheet has a microstructure including ferrite having an area fraction in the range of 0 to 10%, martensite having an area fraction in the range of 15 to 60%, tempered martensite having an area fraction in the range of 20 to 50%, and bainitic ferrite having an area fraction in the range of 20 to 50%.

Abstract: In the case of a OXC device having a route & select-type configuration of the conventional technique, when the port number is 20, then the entire device requires 120 WSSs having a 1×9 configuration. In the case of a route & select-type OXC device having ports more than 20 ports, a large amount of expensive WSSs is required. Thus, such a device is impractical from the viewpoint of cost. Thus, the expansion depending on an increase of traffic at nodes was impossible, flexible scalability could not be provided, and a reasonable network operation from the viewpoint of economy was difficult. According to the OXC device of this disclosure, regardless of the input port number and the output port number of the device, WSSs having a smaller scale than the conventional technique are used and the WSSs are internally-connected from a viewpoint different from that of the conventional technique, thus providing the device having a significantly-reduced cost.

Abstract: A steel sheet, a plated steel sheet, and methods for producing a hot-rolled steel sheet, a cold-rolled full hard steel sheet, and a steel sheet. The steel sheet has a specified composition and a microstructure including 0 to 60% of polygonal ferrite and 40 to 100% of a total of martensite, bainite, and residual austenite in terms of an area ratio within 20 ?m from the steel sheet surface. The content of Mn in martensite present within 20 ?m of the steel sheet surface ([Mn]SM) and the content of Mn in a bulk ([Mn]B) satisfy [Mn]SM/[Mn]B?1.5. At a location 300 ?m from the steel sheet surface, an area ratio of the martensite is in a range of 40 to 80%, and the polygonal ferrite and the bainite have an average crystal grain size of less than 15 ?m.

Abstract: To provide a porous plate for medical use which can suppress bending along a row direction and, even if a local crack occurs, can inhibit the crack from growing and leading to a fracture. One aspect of the present invention is a porous plate for medical use which is a thin-plate substrate provided with a pore perforation section having a plurality of pores perforated therein and a frame section surrounding the pore perforation section. In this porous plate, the pore perforation section has crosspieces which extend lengthwise and crosswise in continuity with the frame section and partition the pore perforation section into a plurality of parts, and a plurality of pore perforation cells each surrounded by the crosspieces. The pores perforated in the pore perforation cells have a pore diameter calculated as an equivalent circular pore diameter of 1 to 50 ?m, and the center-to-center distance between the adjacent pores is 2 to 200 ?m.

Abstract: A high-strength galvanized steel sheet having improved post-work impact resistance, a method for producing the high-strength galvanized steel sheet, and a high-strength member produced using the steel sheet. The high-strength galvanized steel sheet includes a steel sheet having a microstructure including ferrite and carbide-free bainite, martensite and carbide-containing bainite, and retained austenite, the total area fraction of ferrite and carbide-free bainite being 0% to 55%, the total area fraction of martensite and carbide-containing bainite being 45% to 100%, and the area fraction of retained austenite being 0% to 5%. Additionally, a galvanizing layer is disposed on the steel sheet. The density of gaps that cut across the entire thickness of the galvanizing layer in a cross section of the galvanizing layer, which is taken in the thickness direction so as to be perpendicular to the rolling direction, is 10 gaps/mm or more.

Abstract: A high-strength steel sheet for warm working having excellent warm workability, and a method for manufacturing the steel sheet. The steel sheet has a chemical composition including, by mass %, C: 0.05% to 0.20%, Si: 3.0% or less, Mn: 3.5% to 8.0%, P: 0.100% or less, S: 0.02% or less, Al: 0.01% to 3.0%, N: 0.010% or less, one or more selected from Nb: 0.005% to 0.20%, Ti: 0.005% to 0.20%, Mo: 0.005% to 1.0%, and V: 0.005% to 1.0%. The steel sheet has a microstructure including, in terms of area ratio, 10% to 60% of retained austenite, 10% to 80% of ferrite, 10% to 50% of martensite, and 0% to 5% of bainite, in which a C content in the retained austenite is less than 0.40 mass % and the average crystal grain diameter of the retained austenite, the martensite, and the ferrite is 2.0 ?m or less.

Abstract: High strength steel sheets that have excellent ductility and low-temperature toughness and methods for producing such high strength steel sheets. A high strength steel sheet includes a composition containing, on a mass % basis, C: 0.05% to 0.30%, Si: 0.5% to 2.5%, Mn: 0.5% to 3.5%, P: 0.003% to 0.100%, S: 0.02% or less, Al: 0.010% to 1.5%, and N: 0.01% or less, the balance being Fe and unavoidable impurities, and a steel microstructure including a ferrite phase with an area fraction of 10% to 70%, a hard second phase with an area fraction of 30% to 90%, and a carbide that is at an interface between a ferrite phase and a hard second phase and that has an average equivalent-circle diameter of 200 nm or less.

Abstract: A method of manufacturing a galvanized steel sheet having a composition containing, by mass %, C: 0.05% or more and 0.5% or less, Si: 0.01% or more and 2.5% or less, Mn: 0.5% or more and 3.5% or less, P: 0.003% or more and 0.100% or less, S: 0.02% or less, Al: 0.010% or more and 0.5% or less, B: 0.0002% or more and 0.005% or less, Ti: 0.05% or less, a relationship of Ti>4N being satisfied, and the balance comprising Fe and inevitable impurities, and a microstructure containing 60% or more and 95% or less of tempered martensite in terms of area ratio and 5% or more and 20% or less of retained austenite in terms of area ratio.

Abstract: A wavelength routing SW is a large-scale optical switch device of a conventional technique, and it requires as many wavelength-tunable light sources as the number of input ports. For the wavelength-tunable light sources to achieve a stable oscillating operation across a wide wavelength range, a complicated control mechanism is necessary. This has been an obstacle in providing a large-scale optical switch device in terms of cost and circuit scale. A wavelength routing SW in the present disclosure includes N wavelength group generators, a splitting-selection unit, and MN tunable filters. Each wavelength group generator includes M fixed-wavelength light sources. Inexpensive general-purpose devices that require no control mechanism for wavelength tuning can be used as the fixed-wavelength light source. The channel loss in the optical switch device can also be reduced by using light sources with a limited narrow range of tunable wavelengths and the wavelength-dependent output port selecting function of an AWG.

Abstract: A semiconductor integrated circuit and corresponding display panel and electronic apparatus. A pixel element includes a self-luminous element and a drive transistor connected to a power supply line. In an emission period of the self-luminous element, an active voltage and an intermediate voltage are sequentially applied between the power supply line and a potential line with a pulse-shaped waveform such that a predetermined luminance duration is obtained in the emission period. In a non-emission period of the self-luminous element, an off-state voltage is applied between the power supply line and the potential line so as to maintain the self-luminous element in a non-emission state.

Abstract: The golf club includes a shaft, a golf club head equipped with a face portion and a hosel portion having an attachment hole for insertion of the shaft, and a support member attached to an opening portion of the attachment hole and formed into a cylindrical shape covering the outer circumferential surface of the shaft. The shaft includes a hollow shaft body and a sheet-like reinforcing layer constituted by low-elasticity fibers and arranged in the shaft body, the reinforcing layer being arranged at a position corresponding to at least the support member. The attachment hole includes a support portion having an inner diameter for supporting the outer circumferential surface of the shaft, and an engaging portion continuous with the support portion, having a larger inner diameter than the support portion, and open to the outside in an opening of the attachment hole.

Abstract: A golf club 100 includes a tip engagement part RT having a reverse-tapered shape and being disposed at a tip end portion of a shaft 300, and a screw member 600. The tip engagement part RT includes a sleeve 400 fixed to the tip end portion of the shaft 300. The sleeve 400 has a sleeve-side connection part 410. The screw member 600 has a screw-side connection part 602 that can be detachably connected to the sleeve-side connection part 410, and a male screw part 604. The head 200 has a female screw part 220. When the screw member 600 is rotated in a first direction, the screw member 600 presses the tip engagement part RT in an engaging direction. When the screw member 600 is rotated in a second direction, the screw member 600 pulls the tip engagement part RT in an engagement releasing direction.

Abstract: A method for producing high-strength galvannealed steel sheets having excellent workability and fatigue resistance. The method comprises subjecting a steel sheet to an oxidation treatment, the oxidation treatment including heating the steel sheet in an upstream stage at a temperature in the range of 400° C. to 750° C. in an atmosphere having an O2 concentration of not less than 1000 ppm by volume and a H2O concentration of not less than 1000 ppm by volume and a downstream stage at a temperature in the range of 600° C. to 850° C. in an atmosphere having an O2 concentration of less than 1000 ppm by volume and a H2O concentration of not less than 1000 ppm by volume. The method further comprises subjecting the steel sheet to reducing annealing, hot-dip galvanizing treatment and alloying treatment.

Abstract: In the production of hydrogen peroxide, when ketone forms are increased upon conversion from higher alcohol components in organic solvents, such increased levels of ketone forms reduce the water content in a working solution and lead to deterioration of catalytic activity. Moreover, increased levels of ketone forms reduce the solubility of anthrahydroquinone compounds and may cause an obstacle to stable and safe operation in the production of hydrogen peroxide due to crystallization and deposition of the anthrahydroquinone compounds. The object of the present invention is to provide a process in which polar solvent-derived altered substances (ketone forms) in a working solution provided for use in the production of hydrogen peroxide via the anthraquinone process are regenerated into the original alcohol components to thereby improve the production efficiency of hydrogen peroxide.

Abstract: A safety cap assembly to be installed in the lid of a cooking appliance such as a pressure cooker and comprising a pressure release tube having a flange portion at its lower end, a cap securing nut with its outer diameter gradually increasing from the top end to the lower end and provided on the flange portion of the cap securing nut, and a safety cap unit which includes a mesh casing and a supporting bridge in a shallow reversed V-shape and is mounted to the lower portion of the pressure release tube. The safety cap assembly can be installed along with a vacuum adapter including a clogging ball inside to create a vacuum environment inside the pressure cooker.