Abstract: A fluidic cylinder has a cylinder tube having a cylinder chamber defined in an interior thereof has a pair of cover members attached to respective ends of the cylinder tube. A piston is disposed displaceably along the cylinder chamber, and a piston rod is connected to the piston. The piston and the cylinder tube are formed with rectangular shapes in cross section, the piston includes a wear ring which is in sliding contact with an inner wall surface of the cylinder tube, and a magnet is incorporated in the wear ring. At least one of the cover members includes bolt holes therein, the bolt holes extending in at least two or more directions including a direction in which the piston is displaced, and fastening bolts are selectively inserted into the bolt holes to fix the at least one of the cover members with respect to another member.

Abstract: Provided is a 2,3-bisphosphinopyrazine derivative represented by the following general formula (1), wherein R1, R2, R3, and R4 represent an optionally substituted straight-chain or branched alkyl group having 1 to 10 carbon atoms, an optionally substituted cycloalkyl group, an optionally substituted adamantyl group, or an optionally substituted phenyl group, R5 represents an optionally substituted alkyl group having 1 to 10 carbon atoms or an optionally substituted phenyl group, each R5 may be the same group or a different group, R6 represents a monovalent substituent, n denotes an integer of 0 to

Abstract: The silyl phosphine compound of the present invention is represented by the formula (1) and has an arsenic content of not more than 1 ppm. The process for producing a silyl phosphine compound of the present invention is a process comprising mixing a basic compound, a silylating agent and phosphine to obtain a solution containing a silyl phosphine compound, removing a solvent from the solution to obtain a concentrated solution of a silyl phosphine compound, and distilling the concentrated solution, wherein an arsenic content in the phosphine is adjusted to not more than 1 ppm by volume in terms of arsine. The process for producing InP quantum dots of the present invention uses, as a phosphorus source, a silyl phosphine compound represented by the formula (1) and having an arsenic content of not more than 1 ppm by mass. (For definition of R, see the specification.

Abstract: A packing has an outer circumferential surface and includes a pair of sealing parts located at opposite ends of the packing in a direction along an axis. A piston has a sliding face having a first recess groove. When in the first recess groove, the packing has an outside diameter smaller than the diameter of a slide-receiving face of a cylinder hole. The piston divides the cylinder hole into a pair of chambers. While a compressed fluid is supplied to either one of the chambers, a side edge of the packing adjacent to the chamber at a high pressure is stretched in a radial direction by elastic deformation due to the pressure of the compressed fluid, thus causing a sealing part adjacent to the chamber at the high pressure to reduce a gap formed with the slide-receiving face of the cylinder hole or come into contact with the slide-receiving face.

Abstract: An optically active 2,3-bisphosphinopyrazine derivative represented by the following general formula (1): wherein R1 represents a group selected from a branched alkyl group having 3 or more carbon atoms, an adamantyl group, an optionally substituted cycloalkyl group, and an optionally substituted aryl group; R2 represents a group selected from a branched alkyl group having 3 or more carbon atoms, an adamantyl group, and an optionally substituted cycloalkyl group, provided that when R1 is a tert-butyl group, R1 and R2 are not the same; R3 represents a monovalent substituent; n represents an integer of 0 to 4; and * represents an asymmetric center on a phosphorus atom.

Abstract: A hydraulic cylinder is provided with a cylinder tube, a piston unit, and a piston rod. The piston unit has a piston body; packing mounted on the piston body; a holding member mounted on the piston body; and a magnet held by a magnet holding part of the holding member. The magnet holding part has a notch that is open on the outer circumferential surface of the holding member.

Abstract: A shaft coupling structure includes a stopper member attached to a piston rod so as to be relatively rotatable and has a plurality of engagement projections and a plurality of slot grooves. The plurality of engagement projections are inserted into the slot grooves, respectively, and include a plurality of inlet grooves and a plurality of inclined engagement grooves extending in a direction inclined from the circumferential direction. The piston rod and a piston member are coupled together through the stopper member so as to be relatively unmovable in the axial direction.

Abstract: A control device for a power generation system whereby power is generated by a first power source that operates by burning a fuel. The control device identifies, on the basis of a pressure difference in a prior-stage mechanism that supplies the fuel to the first power source, a fuel capacity that compensates for the pressure difference in the prior-stage mechanism. The pressure difference is the difference between a pressure set for the fuel before a load change in the prior-stage mechanism and a pressure set for the fuel after the load change in the prior-stage mechanism. The control device calculates a fuel supply command value, which is a command value for adjusting the amount of fuel supplied to a fuel supply device that supplies the fuel to the first power source, and is output to the fuel supply device using a fuel supply acceleration command value.

Abstract: A piston unit is provided with a piston body; a packing mounted on an outer circumferential portion of the piston body; a holding member having a plurality of magnet holding portions that are arranged along a circumferential direction; a plurality of magnets which are held at intervals in the circumferential direction; a first annular yoke disposed on one side in an axial direction of the plurality of magnets; and a second annular yoke disposed on the other side in the axial direction of the plurality of magnets.

Abstract: In the method for producing an optically active 2,3-bisphosphinopyrazine derivative of the present invention, an optically active 2,3-bisphosphinopyrazine derivative represented by the following formula (3) is produced by the step of: preparing solution A containing 2,3-dihalogenopyrazine represented by the following formula (1) and a carboxylic acid amide coordinating solvent, lithiating an optically active R- or S-isomer of a hydrogen-phosphine borane compound represented by the following formula (2) to give a lithiated phosphine borane compound; adding solution B containing the lithiated phosphine borane compound to the solution A to perform an aromatic nucleophilic substitution reaction; and then performing a deboranation reaction. (For symbols in the formulas, see the description.

Abstract: The present invention relates to a fluidic cylinder. This fluidic cylinder is configured in such a manner that a piston unit is received in an axially displaceable manner within a cylinder tube formed in a rectangular cross-sectional shape. The piston unit has: a base body having the front end of a piston rod staked thereto; a wear ring having the base body received therein and having a magnet incorporated therein; and piston packing adjacent to the wear ring. The piston unit is integrally held at one end of the piston rod. The wear ring and the piston packing are formed in a rectangular cross-sectional shape corresponding to the rectangular cross-sectional shape of the cylinder tube and are provided rotatable relative to the piston rod.

Abstract: A shaft coupling structure includes a stopper member attached to a piston rod so as to be relatively rotatable and has a plurality of engagement projections and a plurality of slot grooves. The plurality of engagement projections are inserted into the slot grooves, respectively, and include a plurality of inlet grooves and a plurality of inclined engagement grooves extending in a direction inclined from the circumferential direction. The piston rod and a piston member are coupled together through the stopper member so as to be relatively unmovable in the axial direction.

Abstract: A wireless switch includes a cover member, a button member, a first plunger, a second plunger, a trigger spring, a return spring, a shaft, a housing, and a power generation module. An intermediate member constituted of the first plunger, the second plunger, the trigger spring, the return spring, and the shaft is connected between the button member and the power generation module. The intermediate member prevents a position of the shaft making contact with the power generating shaft of the power generation module from changing, and causes stress to build up in the trigger spring, until a movement distance of the button member reaches a predetermined distance. The intermediate member releases the stress built up in the trigger spring and pushes the power generation shaft with the shaft using the released stress upon the movement distance of the button member reaching the predetermined distance.

Abstract: The process for producing a silyl phosphine compound of the present invention comprises a first step of mixing a solvent having a relative dielectric constant of not more than 4, a basic compound, a silylating agent and phosphine to obtain a solution containing a silyl phosphine compound, a second step of removing the solvent from the solution containing a silyl phosphine compound to obtain a concentrated solution of a silyl phosphine compound, and a third step of distilling the concentrated solution of a silyl phosphine compound to obtain the silyl phosphine compound. The silyl phosphine compound of the present invention is a silyl phosphine compound represented by the following general formula (1), wherein a content of a compound represented by the following general formula (2) is not more than 0.5 mol %. (For explanatory notes of the formulas, see the specification.