Abstract: According to one embodiment, a superconducting coil apparatus comprising at least one superconducting coil formed of a plurality of turns under a definition that one turn is a portion of a superconducting wire annularly wound for one round, wherein: the superconducting coil has a shape along an outer peripheral surface of a tubular structure having a tubular shape; each of the plurality of turns has a coil longitudinal portion extending along an axial direction of the tubular structure; arrangement form of the coil longitudinal portion is different between a main magnetic field generation region configured to generate a main magnetic field and a magnetic field correction region configured to generate a correction magnetic field.

Abstract: According to one embodiment, a superconducting coil apparatus comprising at least one superconducting coil formed of a plurality of turns under a definition that one turn is a portion of a superconducting wire annularly wound for one round, wherein: the superconducting coil has a shape along an outer peripheral surface of a tubular structure having a tubular shape; each of the plurality of turns has a coil longitudinal portion extending along an axial direction of the tubular structure and a coil end portion extending from the coil longitudinal portion along a circumferential direction of the tubular structure; and a boundary line indicating a border between the coil longitudinal portion and the coil end portion at each of the plurality of turns is inclined with respect to a reference line extending in the circumferential direction of the tubular structure in a side view of the tubular structure.

Abstract: A vibrationproof rubber composition capable of obtaining a vibrationproof rubber having a specific hardness and an excellent balance of mechanical properties, vibrationproof properties, and a friction coefficient, a vulcanized molded body obtained by vulcanizing the vibrationproof rubber composition, and vibrationproof rubber is provided. A vibrationproof rubber composition comprising: 100 parts by mass of xanthogen-modified chloroprene rubber; 0.5 to 2 parts by mass of stearic acid amide; and 4 to 5 parts by mass of erucic acid amide, wherein: the vibrationproof rubber composition further comprises carbon black with an average primary particle diameter of 60 to 470 nm, and a molded body obtained by vulcanizing the vibrationproof rubber composition has a type A durometer hardness of 50 to 70 is provided.

Abstract: A rubber composition from which a vulcanized rubber simultaneously improved in three characteristics of oil resistance, cold resistance and ozone resistance can be obtained, and a molded article using the vulcanized rubber are provided. The rubber composition contains 50 to 99 parts by mass of a chloroprene rubber containing 0.01 to 20% by mass of an unsaturated nitrile monomer unit and 1 to 50 parts by mass of a non-conjugated diene rubber.

Abstract: A rubber composition from which a vulcanized rubber simultaneously improved in three characteristics of oil resistance, cold resistance and ozone resistance can be obtained, and a molded article using the vulcanized rubber are provided. The rubber composition contains 50 to 99 parts by mass of a chloroprene rubber containing 0.01 to 20% by mass of an unsaturated nitrile monomer unit and 1 to 50 parts by mass of a non-conjugated diene rubber.

Abstract: A rubber-based composition modifier includes 100 parts by mass of a mixed rubber component containing a chloroprene rubber and at least one copolymer selected from ethylene/?-olefin copolymers and ethylene/?-olefin/unconjugated polyene copolymers, 10 to 60 parts by mass of magnesium oxide, 3 to 30 parts by mass of a softener, and 30 to 120 parts by mass of acetylene black, wherein the mixed rubber component has a Mooney viscosity, as determined by the method specified in JIS K6300, of 60 to 180 at 100° C.; the magnesium oxide has a BET specific surface area, as determined by the one point method specified in JIS Z8830, of 20 to 150 m2/g; the softener contains a fatty acid ester-based plasticizer and an unsaturated fatty acid having a carbon number of 10 to 24 and containing an ester bond, a hydroxyl group, or both of them in part of the structure.

Abstract: In a three-level chopper apparatus, a protection switch circuit is controllable to change a current pathway through which an overvoltage is applied to a second capacitor or a first capacitor to a current pathway through which no overvoltage is applied to the second capacitor or the first capacitor.

Abstract: A rubber-based composition modifier includes 100 parts by mass of a mixed rubber component containing a chloroprene rubber and at least one copolymer selected from ethylene/?-olefin copolymers and ethylene/?-olefin/unconjugated polyene copolymers, 10 to 60 parts by mass of magnesium oxide, 3 to 30 parts by mass of a softener, and 30 to 120 parts by mass of acetylene black, wherein the mixed rubber component has a Mooney viscosity, as determined by the method specified in JIS K6300, of 60 to 180 at 100° C.; the magnesium oxide has a BET specific surface area, as determined by the one point method specified in JIS Z8830, of 20 to 150 m2/g; the softener contains a fatty acid ester-based plasticizer and an unsaturated fatty acid having a carbon number of 10 to 24 and containing an ester bond, a hydroxyl group, or both of them in part of the structure.

Abstract: A three-level chopper apparatus includes a protection switch circuit that changes a current pathway through which an overvoltage is applied to a second capacitor or a first capacitor to a current pathway through which no overvoltage is applied to the second capacitor or the first capacitor when a first switch or a second switch has a failure.

Abstract: A three-level chopper apparatus includes a protection switch circuit that changes a current pathway through which an overvoltage is applied to a second capacitor or a first capacitor to a current pathway through which no overvoltage is applied to the second capacitor or the first capacitor when a first switch or a second switch has a failure.

Abstract: In a three-level chopper apparatus, a protection switch circuit is controllable to change a current pathway through which an overvoltage is applied to a second capacitor or a first capacitor to a current pathway through which no overvoltage is applied to the second capacitor or the first capacitor.

Abstract: Provided is a chloroprene rubber composition giving a vulcanized molded article improved further in heat resistance without deterioration in mechanical properties such as anti-vibration rubber properties, durometer hardness, and elongation at break, a vulcanized molded article prepared and an anti-vibration rubber prepared from the composition. A chloroprene rubber composition, comprising 100 parts by mass of a chloroprene rubber, 0.1 part or more by mass and 10 parts or less by mass of an active zinc white having an average particle diameter of 0.05 ?m or more and 0.35 ?m or less, a particle diameter range of 0.01 ?m or more and 1.0 ?m or less and a specific surface area of 10 m2/g or more and 150 m2/g or less, and 15 parts or more by mass and 200 parts or less by mass of a carbon black having an average particle diameter of 70 nm or more and 600 nm or less and a DBP oil absorption number of 15 ml/100 g or more and 60 ml/100 g or less.

Abstract: Provided is a rubber bearing formed from a polychloroprene composition and having higher ozone resistance. The rubber bearing comprises a laminate prepared by alternately laminating a plurality of soft layers having rubber elasticity and a plurality of hard layers having rigidity, and a covering layer covering an outer peripheral part of the laminate. The soft layer comprises a rubber composition containing a polychloroprene, and the covering layer comprises a blend rubber composition containing 30 to 95 parts by mass of a polychloroprene and 70 to 5 parts by mass of an elastomer other than the polychloroprene.

Abstract: The invention provides compositions of chloroprene rubbers having improved vibration-damping properties under low temperature conditions without deterioration of mechanical properties, permanent compression set and tension fatigue in the final product. The chloroprene rubbers of the invention contain a xanthogen-modified chloroprene rubber and/or a mercaptan-modified chloroprene rubber in an amount of 100 parts by mass, a carbon black having an average particle diameter of 70 mn to 600 mn and a DBP oil absorption (as determined by Absorption A method of JIS-K6221) of 15 ml/100 g in an amount of 15 to 150 parts by mass, and a plasticizer represented by the chemical formula R1COO—(CH2)8—COOR2 wherein R1 and R2 each represent an alkyl group having 1 to 7 carbons.

Abstract: An aniline monomer having a phosphonic acid of general formula (4) is polymerized to produce a polyaniline. In the formula, R1 is NH2 or NH3X, and X is a halogen. R2 are each independently a phosphonic acid or a salt thereof. R3 are each independently selected from the group consisting of a halogen atom, alkyl group having 1-15 carbon atoms, aralkyl group having 7-34 carbon atoms, alkoxy group having 1-15 carbon atoms, alkylthio group having 1-15 carbon atoms, alkylamino group having 1-15 carbon atoms, carboxyl group, carboxylic acid alkyl ester group wherein the alkyl group has 1-15 carbon atoms, nitro group, and cyano group. m is an integer of 1-4, n is an integer of 0-3, and the sum of m and n is 1-4. However, none of R2 and R3 is present at the para position relative to R1.

Abstract: Provided are a rubber composition that gives a vulcanizate superior in heat resistance and a vulcanizate and a molded article thereof. A rubber composition, comprising a rubber component consisting of a chloroprene rubber: 50 to 90 mass % and an elastomer: 10 to 50 mass % in a total amount of 100 parts by mass, a zinc powder having an arithmetic mean particle diameter, as determined by the method specified by JIS Z8901, of 3 to 10 ?m in an amount of 3 to 20 parts by mass, and a magnesium oxide having a BET specific surface area, as determined by the one-point method specified by JIS Z8830, of 20 to 150 m2/g in an amount of 4 to 16 parts by mass. A vulcanizate and a molded article obtained by molding and vulcanization of the rubber composition.

Abstract: A single phase three-level power converter can include a first half bridge and a second half bridge. A half bridge operation is implemented in either the first half bridge or second half bridge when outputting a single phase alternating current voltage having an amplitude a half or less than that of a direct current input voltage, and also, by alternately switching between the bridges carrying out the half bridge operation. In certain configurations, the power converter can convert a direct current input voltage into alternating current phase voltages having three levels of potential, which are positive, negative, and intermediate voltages, by controlling on-off conditions of a plurality of switch elements, and a controller that, by supplying gate signals to the switch elements configuring the first half bridge and second half bridge, controls the related on-off conditions.

Abstract: To provide a chloroprene rubber composition providing good permanent compression set and excellent mechanical strength, a vulcanizate of the composition, and a molded article of the composition. A chloroprene rubber composition including a chloroprene rubber and a natural rubber in a total amount of 100 parts by mass, a copolymer of styrene and butadiene in an amount of 0.1 to 10 parts by mass, ethylene thiourea in an amount of 0.1 to 3.0 parts by mass, and dipentamethylenethiuram tetrasulfide in an amount of 0.1 to 3.0 parts by mass is vulcanized after or during molding of the composition to yield a vulcanized molding.

Abstract: Provided are a blended rubber and a blended rubber composition that give a vulcanizate superior in abrasion resistance and ozone resistance, and a vulcanizate prepared by vulcanizing the blended rubber composition. A blended rubber, comprising 30 to 93 mass % of a chloroprene rubber, 5 to 50 mass % of a soft polyvinyl chloride, and 2 to 20 mass % of an acrylonitrile-butadiene rubber. The polyvinyl chloride resin used preferably has a polymerization degree of 300 to 3000 and the acrylonitrile-butadiene rubber preferably has an acrylonitrile content of 18 to 50 mass %.

Abstract: An object of the invention is to provide a sulfur-modified chloroprene rubber composition improved in heat resistance. A sulfur-modified chloroprene rubber composition, comprising a sulfur-modified chloroprene rubber containing sulfur chemically bound thereto and sulfur not chemically bound to the sulfur-modified chloroprene rubber, wherein: the ratio of the amount of sulfur chemically bound to the sulfur-modified chloroprene rubber to the total amount of sulfur in the sulfur-modified chloroprene rubber composition (amount of chemically bound sulfur [mass %]/total amount of sulfur [mass %]) is 0.1 to 0.45; and the sulfur-modified chloroprene rubber has, at the molecular terminal, at least one structure represented by the following General Formula (1) or (2): —S—C(?S)—O—R1 . . . (1) (in General Formula (1), R1 represents an alkyl group having 1 to 4 carbon atoms) or —S—R2 . . . (2) (in General Formula (2), R2 represents an alkyl group having 8 to 20 carbon atoms).