Abstract: A reversible flow fan includes: an impeller that includes blade portions; and rear-edge curved portions disposed on surfaces on rear edge sides of the blade portions in a normal rotation direction of the impeller. The rear-edge curved portions are convexly curved from a center of the impeller toward directions of outer peripheral portions of the blade portions in airflow directions during a reverse rotation of the impeller.

Abstract: A blast fan includes: a tubular frame having a first opening and a second opening to pass airflow through between the first opening and the second opening. The first opening has a first reverse tapered portion expanding from inside to outside of the frame, and the first reverse tapered portion has a surface having first convex portions projecting to the inside of the frame.

Abstract: A microreactor device comprises: a microchannel that sends one or more fluids; and a section that isolates vibrations to a first portion of the microchannel.

Abstract: To provide a pressure muscle strength increasing apparatus that allows accurate adjustment of the degree of blood flow restriction when a pressure muscle strength increasing method is carried out. The pressure muscle strength increasing apparatus is comprised of a tight fitting device 100, a pressure setting segment 200, quantification segments 300, and a control segment 400. The tight fitting device 100 is wrapped around a predetermined range on a limb. The tight fitting device 100 has an air-tight gas bag. The compression force applied to the limb can be varied by supplying the air to and removing the air from the gas bag. The pressure setting segment 200 controls the supply and removal of the air into and from the gas bag. The quantification segment 300 is intended to be rest on the limb which the tight fitting device 100 is wrapped around on the distal side thereof to quantify a quantification target that varies depending on the increase and decrease of the compression force.

Abstract: The problem to be solved by the present invention is to clear up an eccentric load onto a pin and a problem of deformation and cavity due to flowing material during extrusion when spring washer blind-holes in a piston for an automobile transmission are formed by extrusion with a pin. After an annular region along the peripheral edge portion on the back of an end plate of a secondary workpiece is flattened, the secondary workpiece is set on a lower die. Further, while the lower die is pressed with upper dies and cushion pressure is applied on the lower die, pins, for piercing the spring washer blind-holes are made to perform an extrusion operation onto the end plate of the secondary workpiece from the backside of the end plate. The extruded material is made to flow into recess holes of the upper die, and thus spring washer blind-holes are formed. Then, projections which have flowed and protrude on the front side are removed by turning with a lathe.

Abstract: A microfluidic device includes a processing layer and a temperature control layer. The processing layer applies a predetermined process to a subject fluid. The temperature control layer is disposed adjacent to the processing layer to give a predetermined temperature environment to the processing layer.

Abstract: A microstructure includes first and second plates. The first plate defines a recess. The second plate is bonded to the first plate to block an opening of the recess to thereby form a closed vacuum space or a closed space filled with inert gas.

Abstract: The problem to be solved by the present invention is to clear up an eccentric load onto a pin and a problem of deformation and cavity due to flowing material during extrusion when spring washer blind-holes in a piston for an automobile transmission is formed by extrusion with a pin. After an annular region along the peripheral edge portion on the back of an end plate 3c of a secondary workpiece 3 is flattened, the secondary workpiece 3 is set on a lower die 11f. Further, while the lower die is pressed with upper dies 10f, 10g and cushion pressure is applied on the lower die 11f, pins 13, 13 . . . for piercing the spring washer blind-holes are made to perform an extrusion operation onto the end plate 3c of the secondary workpiece 3 from the backside of said end plate. The extruded material is made to flow into recess holes 10f1, 10f1 . . . of the upper die 10f and thus spring washer blind-holes 5, 5 . . . are formed.

Abstract: A fluid controlling method includes, sending an inner fluid, and sending an outer fluid coaxially with the inner fluid, wherein one of the inner fluid and the outer fluid includes a corkscrew flow that flows spirally, and wherein the inner fluid and the outer fluid are in contact with each other.

Abstract: A microreactor device comprises: a microchannel that sends one or more fluids; and a section that isolates vibrations to a first portion of the microchannel.

Abstract: A method for manufacturing a vertical cavity surface emitting laser formed by laminating a plurality of layers on a substrate, includes coupling two layers of the plurality of layers by joining at room temperature or joining while heating.

Abstract: A fluid controlling method includes, sending an inner fluid, and sending an outer fluid coaxially with the inner fluid, wherein one of the inner fluid and the outer fluid includes a corkscrew flow that flows spirally, and wherein the inner fluid and the outer fluid are in contact with each other.

Abstract: A microfluidic device includes a processing layer and a temperature control layer. The processing layer applies a predetermined process to a subject fluid. The temperature control layer is disposed adjacent to the processing layer to give a predetermined temperature environment to the processing layer.

Abstract: A microstructure includes first and second plates. The first plate defines a recess. The second plate is bonded to the first plate to block an opening of the recess to thereby form a closed vacuum space or a closed space filled with inert gas.

Abstract: To provide a pressure muscle strength increasing apparatus that allows accurate adjustment of the degree of blood flow restriction when a pressure muscle strength increasing method is carried out. The pressure muscle strength increasing apparatus is comprised of a tight fitting device 100, a pressure setting segment 200, quantification segments 300, and a control segment 400. The tight fitting device 100 is wrapped around a predetermined range on a limb. The tight fitting device 100 has an air-tight gas bag. The compression force applied to the limb can be varied by supplying the air to and removing the air from the gas bag. The pressure setting segment 200 controls the supply and removal of the air into and from the gas bag. The quantification segment 300 is intended to be rest on the limb which the tight fitting device 100 is wrapped around on the distal side thereof to quantify a quantification target that varies depending on the increase and decrease of the compression force.

Abstract: A method for manufacturing a vertical cavity surface emitting laser formed by laminating a plurality of layers on a substrate, includes coupling two layers of the plurality of layers by joining at room temperature or joining while heating.

Abstract: A semiconductor device having laminated successively a porous semiconductor layer, an inorganic semiconductor layer, and optionally an organic substance layer formed therebetween is disclosed. The semiconductor device is produced by immersing a porous semiconductor layer or a semiconductor layer having an organic substance layer on the surface thereof in a solution containing the elements constituting an inorganic semiconductor or compounds of the elements and forming the inorganic semiconductor layer on the porous semiconductor layer or the organic substance layer in the solution.

Abstract: A device for applying flux to the rear of a printed circuit board loaded with electronic parts on the front thereof and being transported by spraying the flux. The device has a single nozzle which is movable in a reciprocating motion in a direction perpendicular to the moving direction of the circuit board, thereby applying flux to the entire rear surface of the circuit board in a uniform distribution. The range of reciprocation of the nozzle is controlled on the basis of data generated by a sensor which is responsive to the width of the circuit board in transport. A flux feeding device capable of adjusting the amount of flux to be sprayed from the nozzle and a device for preventing the nozzle from being stopped up are associated with the flux applying device.