Abstract: A composition for producing an N-vinylcarboxylic acid amide includes (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 satisfies the following conditions: (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. A method for producing an N-vinylcarboxylic acid amide includes thermally decomposing or catalytically decomposing the composition for producing an N-vinylcarboxylic acid amide.

Abstract: A misfire determination device, for an internal combustion engine, according to the present invention detects a combustion state parameter of the internal combustion engine, retrieves an extreme value of the combustion state parameter in an extreme value retrieval section from a start timing of a combustion stroke to a predetermined crank angle (step 5), upon retrieval of the extreme value, sets a predetermined crank angle section subsequent to a crank angle corresponding to the extreme value as a misfire determination parameter calculation section (step 6, expression 5), calculates a misfire determination parameter based on the combustion state parameter that has been detected in the misfire determination parameter calculation section (step 6), and determines a misfire based on the misfire determination parameter (steps 7 to 9).

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 photoelectric conversion module plug includes a PCB, an electrical connector, an opto-electric hybrid board, an optical fiber, a photonic device, and a casing that accommodates them. The opto-electric hybrid board includes a core. The core includes a mirror surface. The electrical connector and the optical fiber are separately arranged in the first direction. The casing includes a first wall and a second wall that face each other at an interval in the thickness direction. The first wall has a first intermediate surface extending in a direction away from the second wall in the thickness direction. The first intermediate surface faces an electrical connector side in an arrangement direction in which the electrical connector and the optical fiber are arranged.

Abstract: A shield tape is provided in a hybrid cable. The shield tape includes one pair of differential wirings and a shield tape. The shield tape surrounds the one pair of differential wirings. The shield tape includes a substrate layer and a shield layer. The substrate layer has insulating properties. The shield layer is disposed at the opposite side of the one pair of differential wirings with respect to the substrate layer.

Abstract: A misfire determination device, for an internal combustion engine, according to the present invention detects a combustion state parameter of the internal combustion engine, retrieves an extreme value of the combustion state parameter in an extreme value retrieval section from a start timing of a combustion stroke to a predetermined crank angle (step 5), upon retrieval of the extreme value, sets a predetermined crank angle section subsequent to a crank angle corresponding to the extreme value as a misfire determination parameter calculation section (step 6, expression 5), calculates a misfire determination parameter based on the combustion state parameter that has been detected in the misfire determination parameter calculation section (step 6), and determines a misfire based on the misfire determination parameter (steps 7 to 9).

Abstract: An opto-electric hybrid board that sequentially includes an optical waveguide and an electric circuit boardtoward one side in a thickness direction. The electric circuit boardincludes a metal supporting layer, an insulating base layerdisposed on a one-side surface in the thickness direction of the metal supporting layer, a plurality of conductive layers sequentially disposed at one side in the thickness direction, and an intermediate insulating layerdisposed between the conductive layers . At least one layer selected from the group consisting of the metal supporting layer and the conductive layers is electrically insulated from the other layers.

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: 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 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 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.