Abstract: Provided are a composite material and a reinforced fiber. The composite material includes a fiber and a plurality of carbon nanotubes disposed on a surface of the fiber. The carbon nanotubes adhere directly to the surface of the fiber.

Abstract: A carbon fiber-reinforced molded article includes an arranged composite material and a cured resin product. The composite material includes a carbon fiber bundle and carbon nanotubes. The carbon fiber bundle is in which a plurality of continuous carbon fibers are arranged. The carbon nanotubes adhere to respective surfaces of the carbon fibers. A modulus of elasticity obtained by conducting a three-point bending test with a cushioning material is smaller than a modulus of elasticity obtained by conducting the three-point bending test without the cushioning material.

Abstract: A carbon fiber-reinforced molded article includes an arranged composite material and a cured resin product. The composite material includes a carbon fiber bundle and carbon nanotubes. The carbon fiber bundle is in which a plurality of continuous carbon fibers are arranged. The carbon nanotubes adhere to respective surfaces of the carbon fibers. A modulus of elasticity obtained by conducting a three-point bending test with a cushioning material is smaller than a modulus of elasticity obtained by conducting the three-point bending test without the cushioning material.

Abstract: A shaft structure installed in a shaft capable of making a power-transmission, the shaft structure including: a male component having a plurality of male splines formed on an outer peripheral part thereof; and a female component having a plurality of female splines formed on an inner peripheral part thereof, the inner peripheral part configured to allow the outer peripheral part of the male component to be engaged therein so that the male component and the female component can be slidably fitted with respect to each other in an axial direction thereby making up said shaft structure, wherein the outer peripheral part of the male component and the inner peripheral part of the female component have a fabric impregnated with rubber or resin interposed therebetween.

Abstract: There is provided a carbon fiber-reinforced molded article that avoids peeling of carbon fibers from a base material and has high strength, the carbon fiber-reinforced molded article comprising a base material and a composite material dispersed in the base material, wherein the composite material comprises carbon fibers and a structure formed on the surface of the carbon fibers and including a plurality of carbon nanotubes, the plurality of carbon nanotubes forms a network structure in which the carbon nanotubes are directly connected to one another, and the plurality of carbon nanotubes is directly attached to the surface of the carbon fibers by using a portion of the surface thereof as an attaching portion, and also is physically bound to the surface of the carbon fibers via a binding member provided on at least a portion other than the attaching portion.

Abstract: Provided are a composite material and a reinforced fiber. The composite material (1) includes a fiber (3) and a plurality of carbon nanotubes (5) disposed on a surface of the fiber (3). The carbon nanotubes (5) adhere directly to the surface of the fiber (3). The composite material and the reinforced fiber exhibit both of intrinsic functions of the fiber and functions, such as electrical conductivity, thermal conductivity, and mechanical strength, derived from CNTs.

Abstract: There is provided a carbon fiber-reinforced molded article that avoids peeling of carbon fibers from a base material and has high strength, the carbon fiber-reinforced molded article comprising a base material and a composite material dispersed in the base material, wherein the composite material comprises carbon fibers and a structure formed on the surface of the carbon fibers and including a plurality of carbon nanotubes, the plurality of carbon nanotubes forms a network structure in which the carbon nanotubes are directly connected to one another, and the plurality of carbon nanotubes is directly attached to the surface of the carbon fibers by using a portion of the surface thereof as an attaching portion, and also is physically bound to the surface of the carbon fibers via a binding member provided on at least a portion other than the attaching portion.

Abstract: Provided are a composite material and a reinforced fiber. The composite material includes a fiber and a plurality of carbon nanotubes disposed on a surface of the fiber. The carbon nanotubes adhere directly to the surface of the fiber.

Abstract: A ball screw including: a male component having male grooves on an outer periphery for a ball to roll; a female component fitted together with the male component in an axial direction having female grooves facing the male grooves on an inner periphery for the ball to roll and a circulation path for the ball to circulate; and a seal member at one end, at the other end, or at each of one and the other ends of the female component in the axial direction and including a hole capable of communicating with the inner periphery, a fiber layer having a fitting surface having a convex part capable of being fitted in the male grooves when the male component is inserted into the hole and a surface made of fibers impregnated with rubber or resin, and a rubber or resin layer laminated on a surface opposite to the fitting surface.

Abstract: A shaft structure including: a male component having male spline parts and male spline bottom parts on an outer peripheral part; a female component having female spline parts and female spline bottom parts on an inner peripheral part configured to allow the male component to be slidably inserted in an axial direction; and an elastic member arranged on the male component covering a surface of the outer peripheral part of the male component, wherein, in an initial state where the male component is inserted into the female component, the female and male components have first gaps between: sides of the female spline parts; and sides-facing portions of the elastic member, and when the male component is rotated, a time from the initial state to a state where the sides of the female spline parts abut on the portions of the elastic member, has predetermined time differences along the axial direction.

Abstract: There is provided a resin composite material in which problems, such as a decrease in mechanical strength of a resin and a decrease in processabilities due to an increase in resin viscosity, are overcome by using a small amount of CNTs, and in which, in spite of using a small amount of CNTs, the functions derived from the formation of a composite of CNTs and other effective functions can be exhibited.

Abstract: A shaft structure including: a male component having male spline parts and male spline bottom parts on an outer peripheral part; a female component having female spline parts and female spline bottom parts on an inner peripheral part configured to allow the male component to be slidably inserted in an axial direction; and an elastic member arranged on the male component covering a surface of the outer peripheral part of the male component, wherein, in an initial state where the male component is inserted into the female component, the female and male components have first gaps between: sides of the female spline parts; and sides-facing portions of the elastic member, and when the male component is rotated, a time from the initial state to a state where the sides of the female spline parts abut on the portions of the elastic member, has predetermined time differences along the axial direction.

Abstract: A ball screw including: a male component having male grooves on an outer periphery for a ball to roll; a female component fitted together with the male component in an axial direction having female grooves facing the male grooves on an inner periphery for the ball to roll and a circulation path for the ball to circulate; and a seal member at one end, at the other end, or at each of one and the other ends of the female component in the axial direction and including a hole capable of communicating with the inner periphery, a fiber layer having a fitting surface having a convex part capable of being fitted in the male grooves when the male component is inserted into the hole and a surface made of fibers impregnated with rubber or resin, and a rubber or resin layer laminated on a surface opposite to the fitting surface.

Abstract: A shaft structure installed in a shaft capable of making a power-transmission, the shaft structure including: a male component having a plurality of male splines formed on an outer peripheral part thereof; and a female component having a plurality of female splines formed on an inner peripheral part thereof, the inner peripheral part configured to allow the outer peripheral part of the male component to be engaged therein so that the male component and the female component can be slidably fitted with respect to each other in an axial direction thereby making up said shaft structure, wherein the outer peripheral part of the male component and the inner peripheral part of the female component have a fabric impregnated with rubber or resin interposed therebetween.

Abstract: As a grease to be enclosed in the portion in which a rolling bearing is installed, there is used a urea-based grease. An elastic material constituting a sealing plate is made of a vulcanizable fluororubber composition containing a vinylidene fluoride-tetrafluoroethylene-propylene terpolymer or tetrafluoroethylene-propylene bipolymer.

Abstract: A slow-release composite having pyroglutamyl-histidyl-triptophyl-seryl- tyrosyl-D-leucyl-leucyl-arginyl-proline ethylamide or a salt thereof encapsulated in a polymer matrix and a process the same are herein disclosed.

Abstract: A slow-release composite having pyroglutamyl-histidyl-triptophyl-seryl-tyrosyl-D-leucyl-leucyl-arginyl-pro line ethylamide or a salt thereof encapsulated in a polymer matrix and a process the same are herein disclosed.

Abstract: An Estracyt compound having a carcinostatic bound thereto is obtained by reacting an Estracyt compound with a carcinostatic having one or more radicals selected from among COOH, Cl, NH.sub.2 and OH, either directly or after reaction with an amine to replace one or both Cl groups in the nitrogen mustard portion in the Estracyt compound with a NH.sub.2 group, in the presence or absence of a catalyst. The resulting compound is more effective in cancer control than the Estracyt compound associated substance.