Abstract: In an RFC diode, a semiconductor substrate includes an n? drift layer, an n buffer layer, and a diffusion layer provided between and in contact with the n buffer layer and a second metal layer. The diffusion layer includes an n+ cathode layer provided in contact with the n buffer layer and the second metal layer in a diode region. The n+ cathode layer includes a first n+ cathode layer in contact with the second metal layer and a second n+ cathode layer provided between the first n+ cathode layer and the n buffer layer in contact with the n buffer layer. Crystal defect density of the first n+ cathode layer is higher than crystal defect density of another diffusion layer.

Abstract: A silicon carbide layer has an active region and an outer peripheral region arranged along an outer periphery of the active region in an in-plane direction. First well regions are arranged in the active region. A second well region is arranged in the outer peripheral region. Ohmic electrodes are arranged on a second surface of the silicon carbide layer, are connected to a source electrode, are electrically and ohmically connected to the first well regions, and have surface regions ohmically contacting a part forming the second surface of the silicon carbide layer and having a second conductivity type. The active region includes a standard region part and a thinned region part between the standard region part and the outer peripheral region. The surface regions are arranged at surface density lower in the thinned region part than in the standard region part in a plan view.

Abstract: An opto-electric hybrid board that achieves sufficiently lower noise for signal transmission, is less prone to cause warpage during the mounting of various elements, and has high-speed communication properties, an opto-electric hybrid board ? including: an electric circuit board 1; an optical waveguide 2 formed in a stacked manner on a first surface 1a of the electric circuit board 1; and a reinforcement plate 3 for reinforcing the electric circuit board 1, wherein a surface of the optical waveguide 2 on the opposite side from a surface thereof contacting the first surface 1a of the electric circuit board 1 is covered with the reinforcement plate 3.

Abstract: Provided is a photoelectric conversion module plug that includes a photoelectric hybrid board, a circuit board, an optical connector, and a plug case that houses them. At least a part of the photoelectric hybrid board faces the circuit board. The plug case has a thickness T2 in a facing direction between the photoelectric hybrid board and the circuit board. The ratio of the thickness T1 of the optical connector with respect to the thickness T2 of the plug case is 30% or more. The plug case has side walls having uneven region portions respectively and at least a part of the optical connector is located between the uneven region portions. An optical cable according to the present invention includes the module plugs and an optical cable that optically connects between these module plugs.

Abstract: An opto-electric hybrid board includes an optical waveguide, and an electric circuit board disposed on a one-side surface in the thickness direction of the optical waveguide. The electric circuit board includes a first terminal on which an optical element portion is mounted and a second terminal on which a driver element portion is mounted. The electric circuit board includes a metal supporting layer that overlaps the first terminal and the second terminal when the electric circuit board is projected in the thickness direction. The metal supporting layer has an opening portion that is located between the first terminal and the second terminal when the metal supporting layer is projected in the thickness direction.

Abstract: Provided is optical module as a photoelectric conversion module that includes a photoelectric hybrid board, a light-receiving/emitting element, a driving element, and a heat dissipating sheet. The light-receiving/emitting element and the driving element are mounted on one surface in a thickness direction of the photoelectric hybrid board. The heat dissipating sheet is in contact with the light-receiving/emitting element and the driving element from a side opposite to the photoelectric hybrid board. The driving element has a greater height above the photoelectric hybrid board than the light-receiving/emitting element.

Abstract: Provided is an opto-electric transmission composite module and an opto-electric hybrid board, both of which can suppress the reduction in the function of an optical element when a driver element generates heat. The opto-electric transmission composite module includes: an opto-electric hybrid board including an optical waveguide, and an electric circuit board including a first terminal for mounting an optical element; and a printed wiring board including a fourth terminal for mounting a driver element. The printed wiring board is electrically connected with the electric circuit board.

Abstract: An opto-electric hybrid board includes an optical waveguide extending in the longitudinal direction and an electric circuit board disposed on a one-side surface in the thickness direction of the optical waveguide and extending in the longitudinal direction. The electric circuit board includes a first terminal disposed in a one end portion in the longitudinal direction of a one-side surface in the thickness direction of the electric circuit board and being for mounting the optical element, and a second terminal disposed in the one end portion in the longitudinal direction of the one-side surface in the thickness direction of the electric circuit board and being for mounting a driver element electrically connected with the optical element. The electric circuit board has one edge in the longitudinal direction at one side in the longitudinal direction as compared to one edge in the longitudinal direction of the optical waveguide.

Abstract: The present invention provides a method of immunologically detecting SARS-CoV-2, the method comprising detecting a SARS-CoV-2 N protein in a specimen taken from a subject by using the following antibodies (1) and (2): (1) a first antibody to a first epitope in a 306th to 339th amino acid region in the SARS-CoV-2 N protein, and (2) a second antibody to a second epitope in a 365th to 419th amino acid region in the SARS-CoV-2 N protein.

Abstract: An opto-electric composite transmission module includes a printed wiring board, an electrical connector provided on the printed wiring board, and an opto-electric hybrid board which is electrically connected to the printed wiring board via the electrical connector. The opto-electric hybrid board has a long shape. The opto-electric hybrid board includes an opto-electric conversion portion including a flexible wiring board, a metal support layer, and an optical waveguide film in order in a thickness direction, and an electrical connection portion disposed in one end portion in a longitudinal direction of the opto-electric hybrid board and including the flexible wiring board, and the metal support layer and/or the optical waveguide film. The electrical connection portion is inserted into the electrical connector.

Abstract: A method for producing a highly polymerizable N-vinyl carboxylic acid amide monomer includes (A) melting a crude N-vinyl carboxylic acid amide monomer including 50 to 88 mass % of an N-vinyl carboxylic acid amide monomer by heating, followed by cooling for precipitation, and subjecting precipitated N-vinyl carboxylic acid amide monomer crystals to solid-liquid separation (step (A)), and (B) further dissolving the N-vinyl carboxylic acid amide monomer crystals separated in step (A) in a mixed solvent of 1,2-dimethoxyethane and an aliphatic hydrocarbon having 6 to 7 carbon atoms, then performing crystallization, performing solid-liquid separation, and recovering an N-vinyl carboxylic acid amide monomer purified product (step (B)), wherein a mass ratio of 1,2-dimethoxyethane/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.01 to 0.5, and a mass ratio of aliphatic hydrocarbon having 6 to 7 carbon atoms/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.5 to 3.0.

Abstract: A method for producing a highly polymerizable N-vinyl carboxylic acid amide monomer includes (A) melting a crude N-vinyl carboxylic acid amide monomer comprising 50 to 88 mass% of an N-vinyl carboxylic acid amide monomer by heating, followed by cooling for precipitation, and subjecting precipitated N-vinyl carboxylic acid amide monomer crystals to solid-liquid separation (step (A)), and (B) further dissolving the N-vinyl carboxylic acid amide monomer crystals separated in step (A) in a mixed solvent of acetonitrile and an aliphatic hydrocarbon having 6 to 7 carbon atoms, then performing crystallization, performing solid-liquid separation, and recovering an N-vinyl carboxylic acid amide monomer purified product (step (B)), wherein a mass ratio of acetonitrile/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.01 to 0.5, and a mass ratio of aliphatic hydrocarbon having 6 to 7 carbon atoms/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.5 to 3.0.

Abstract: A method for producing a highly polymerizable N-vinyl carboxylic acid amide monomer includes (A) melting a crude N-vinyl carboxylic acid amide monomer comprising 50 to 88 mass % of an N-vinyl carboxylic acid amide monomer by heating, followed by cooling for precipitation, and subjecting precipitated N-vinyl carboxylic acid amide monomer crystals to solid-liquid separation (step (A)), and (B) further dissolving the N-vinyl carboxylic acid amide monomer crystals separated in step (A) in a mixed solvent of toluene and an aliphatic hydrocarbon having 6 to 7 carbon atoms, then performing crystallization, performing solid-liquid separation, and recovering an N-vinyl carboxylic acid amide monomer purified product (step (B)), wherein a mass ratio of toluene/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.01 to 0.5, and a mass ratio of aliphatic hydrocarbon having 6 to 7 carbon atoms/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.5 to 3.0.

Abstract: A method for producing a highly polymerizable N-vinyl carboxylic acid amide monomer includes (A) melting a crude N-vinyl carboxylic acid amide monomer including 50 to 88 mass % of an N-vinyl carboxylic acid amide monomer by heating, followed by cooling for precipitation, and subjecting precipitated N-vinyl carboxylic acid amide monomer crystals to solid-liquid separation, and (B) further dissolving the N-vinyl carboxylic acid amide monomer crystals separated in step (A) in a mixed solvent of methyl ethyl ketone and an aliphatic hydrocarbon having 6 to 7 carbon atoms, then performing crystallization, performing solid-liquid separation, and recovering an N-vinyl carboxylic acid amide monomer purified product, wherein a mass ratio of methyl ethyl ketone/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.01 to 0.5, and a mass ratio of aliphatic hydrocarbon having 6 to 7 carbon atoms/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.5 to 3.0.

Abstract: A method for producing a highly polymerizable N-vinyl carboxylic acid amide monomer includes (A) melting a crude N-vinyl carboxylic acid amide monomer comprising 50 to 88 mass % of an N-vinyl carboxylic acid amide monomer by heating, followed by cooling for precipitation, and subjecting precipitated N-vinyl carboxylic acid amide monomer crystals to solid-liquid separation (step (A)), and (B) further dissolving the N-vinyl carboxylic acid amide monomer crystals separated in the step (A) in a mixed solvent of ethyl acetate and an aliphatic hydrocarbon having 6 to 7 carbon atoms, then performing crystallization, performing solid-liquid separation, and recovering an N-vinyl carboxylic acid amide monomer purified product (step (B)), wherein a mass ratio of ethyl acetate/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.01 to 0.5, and a mass ratio of aliphatic hydrocarbon having 6 to 7 carbon atoms/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.5 to 3.0.

Abstract: A photosensitive epoxy resin composition for formation of an optical waveguide is provided, which contains an epoxy resin component and a photo-cationic polymerization initiator, wherein the epoxy resin component includes: (a) a solid bisphenol-A epoxy resin having a softening point of not higher than 105° C.; (b) a solid polyfunctional aliphatic epoxy resin having a softening point of not higher than 105° C.; and (c) a liquid long-chain bifunctional semi-aliphatic epoxy resin, wherein the epoxy resin (a) is present in a proportion of 60 to 70 wt. % based on the weight of the epoxy resin component, wherein the epoxy resin (b) is present in a proportion of 20 to 35 wt. % based on the weight of the epoxy resin component, wherein the epoxy resin (c) is present in a proportion of 5 to 10 wt. % based on the weight of the epoxy resin component.

Abstract: An opto-electric hybrid board is capable of being mounted on a connector having a bottom wall. The opto-electric hybrid board sequentially includes an optical waveguide and an electric circuit board toward one side in a thickness direction of these. The optical waveguide includes an under clad layer, a core layer disposed on a one-side surface of the tinder clad layer, and an over clad layer disposed on the one-side surface of the under clad layer so as to cover the core layer. The under clad layer is in contact with an other-side surface in the thickness direction of the electric circuit board. The one-side surface in the thickness direction of the electric circuit board is capable of being placed on the bottom wall.

Abstract: The present invention relates to a composition for producing an N-vinylcarboxylic acid amide, the composition including (A) an N-(1-alkoxyethyl)carboxylic acid amide and (B) a carboxylic acid amide other than the N-(1-alkoxyethyl)carboxylic acid amide and the N-vinylcarboxylic acid amide, and satisfying the following conditions (1) to (4): (1) the composition has a melting point of 0 to 30° C.; (2) a water content is 0 to 1.00% by mass in a total amount of the composition; (3) a content ratio of the component (A) to the component (B) is 4.0 to 20.0 in terms of a molar ratio; and (4) a 5% by mass aqueous solution of the composition has a pH of 4.0 to 8.0. The present invention also relates to a method for producing an N-vinylcarboxylic acid amide, the method including thermally decomposing or catalytically decomposing the composition for producing an N-vinylcarboxylic acid amide.

Abstract: A method for producing an N-vinylcarboxylic acid amide is provided, the method focusing on unsaturated aldehydes that are contained as impurities generated during a reaction. The method for producing an N-vinylcarboxylic acid amide includes a step for controlling the contained amount of unsaturated aldehydes in the N-vinylcarboxylic acid amide to be not more than 20 mass ppm.

Abstract: A shift lever device is provided with retention frames at a front side and rear side of a lever, and a plate is provided with blocks at the front side and rear side of the lever. Even if the plate and the lever are installed to a vehicle with the front side and rear side of the plate and the lever reversed, changing the retention frame that retains a detent rod enables the block on the side of the detent rod to restrict swinging of the detent rod, enabling swinging of the lever to be restricted. This thereby enables the plate and the lever to be commonly employed.