Abstract: Disclosed is a radome 1 for vehicle-mounted radar devices including a base body 2 having an electromagnetic wave permeable substrate 3 and a heater wire 41 laminated on an inner surface side of the substrate 3 and wired in a surface direction of the substrate 3, in which linear portions 411 of the heater wire 41 are arranged side by side at intervals in the surface direction of the substrate 3 in an electromagnetic wave irradiation region R of the substrate 3, and a surface occupancy ratio of the linear portions 411 of the heater wire 41 in the electromagnetic wave irradiation region R of the substrate 3 is set to 1% or more and 24% or less. It is possible to exhibit a practical snow-melting function as a radome for vehicle-mounted radar devices while suppressing attenuation of electromagnetic waves irradiated by a vehicle-mounted radar device within an allowable range.

Abstract: The present invention relates to a resin composition comprising: a polymer (I) selected from the group consisting of a polymer (a1) containing a structural unit (i) having an ester linkage type betaine structure and a polymer (b1) containing a structural unit (ii) having a betaine structure that is not of an ester linkage type and a structural unit (iii) having a carboxyl group; an organic solvent having a Hansen solubility parameter at 25° C. in which a dispersion term ?D is 10 to 24 MPa1/2, a polarity term ?P is 5 to 19 MPa1/2, and a hydrogen bonding term ?H is 3 to 17 MPa1/2, and having a boiling point higher than 100° C.; and water.

Abstract: An elongated medical instrument includes a base instrument and a swollen gel film coating the base instrument. The swollen gel film includes a polymer including a repeating unit with a betaine structure and a repeating unit with a carboxyl group (excluding the repeating unit with the betaine structure). A method of providing an elongated medical instrument includes applying a coating agent to a base instrument, the coating agent including a polymer having a repeating unit with an ester-bonded betaine structure, an organic solvent, and water, and forming a swollen gel film by heating coating and hydrolyzing an ester bond in the polymer.

Abstract: A radome for on-board radar devices 1 is provided with heater wires 3 wired in parallel so as to be separated from each other in a plane direction of an electromagnetic-wave-transmitting base member. A line pitch d of the heater wires 3 arranged in parallel in an electromagnetic-wave transmission region R of the base member is set to 0.2 to 2.5 times a wavelength of electromagnetic waves of the radar of an on-board radar device. A surface occupancy rate of the heater wires 3 arranged in parallel in the electromagnetic-wave transmission region R of the base member is set to be greater than 10% to 35%. The present invention provides a radome for on-board radar devices with which it is possible to obtain an electromagnetic-wave transmission property required of a radome, and to melt snow satisfactorily with a high heater performance.

Abstract: The present invention relates to a copolymer having at least a structural unit (A) having a cyclic carbonate structure and a structural unit (B) having a hydrophilic structure.

Abstract: A coating film on an elongated medical device is composed of a polymeric material that has been crosslinked by a structure given by any of formulas (1) to (3).

Abstract: Disclosed is a radome 1 for vehicle-mounted radar devices including a base body 2 having an electromagnetic wave permeable substrate 3 and a heater wire 41 laminated on an inner surface side of the substrate 3 and wired in a surface direction of the substrate 3, in which linear portions 411 of the heater wire 41 are arranged side by side at intervals in the surface direction of the substrate 3 in an electromagnetic wave irradiation region R of the substrate 3, and a surface occupancy ratio of the linear portions 411 of the heater wire 41 in the electromagnetic wave irradiation region R of the substrate 3 is set to 1% or more and 24% or less. It is possible to exhibit a practical snow-melting function as a radome for vehicle-mounted radar devices while suppressing attenuation of electromagnetic waves irradiated by a vehicle-mounted radar device within an allowable range.

Abstract: Disclosed is a radome structure for vehicle-mounted radar devices, in which a planar heating element 2 is laminated and fixed onto a substrate 1 of the radome, a local recess 3 is provided so as to protrude from the substrate 1, a connecting body 4 for electrically connecting an electrode of a heater wire 21 of the planar heating element 2 to a power supply line 5 to the planar heating element 2 is accommodated in the recess 3, and the recess 3 is filled with an insulating resin 6 so as to embed and seal the connecting body 4. It is possible to simplify a connection structure and a waterproof structure of a connecting portion for electrically connecting the heater wire and the power supply line of the radome, and reduce the manufacturing cost of the radome structure having a snow melting function.

Abstract: Provided are: a novel magnetic material having high magnetic stability, in particular, having an extremely high saturation magnetization; and a method for producing the same, wherein the magnetic material, due to having a higher saturation magnetization than ferrite magnetic materials and a higher electrical resistivity than existing metallic magnetic materials, resolves problems such as eddy current loss. According to the present invention, Co-ferrite nanoparticles obtained by wet synthesis are reduced in hydrogen and subjected to grain growth, and bcc- or fcc-(Fe, Co) phases and Co-enriched phases are nano-dispersed using phase separation via a disproportionation reaction to prepare a magnetic material powder. In addition, the magnetic material powder is sintered into a solid magnetic material.

Abstract: The purpose of the present invention is to provide: a new magnetic material which exhibits high magnetic stability and excellent oxidation resistance and which can achieve both significantly higher saturation magnetization and lower coercive force than a conventional ferrite-based magnetic material by using a magnetic material obtained by nanodispersing ?-(Fe,M) phases and M component-enriched phases (here, the M component is at least one component selected from among Zr, Hf, V, Nb, Ta, Cr, Mo, W, Cu, Zn and Si); and a method for producing same. This magnetic material powder exhibits high moldability, and is such that ?-(Fe, M) phases and M-enriched phases are nanodispersed by chemically reducing M-ferrite nanoparticles, which are obtained by means of wet synthesis, in hydrogen and utilizing phase separation by means of a disproportionation reaction while simultaneously carrying out grain growth. Furthermore, a solid magnetic material is obtained by sintering this powder.

Abstract: A radome for on-board radar devices 1 is provided with heater wires 3 wired in parallel so as to be separated from each other in a plane direction of an electromagnetic-wave-transmitting base member. A line pitch d of the heater wires 3 arranged in parallel in an electromagnetic-wave transmission region R of the base member is set to 0.2 to 2.5 times a wavelength of electromagnetic waves of the radar of an on-board radar device. A surface occupancy rate of the heater wires 3 arranged in parallel in the electromagnetic-wave transmission region R of the base member is set to be greater than 10% to 35%. The present invention provides a radome for on-board radar devices with which it is possible to obtain an electromagnetic-wave transmission property required of a radome, and to melt snow satisfactorily with a high heater performance.

Abstract: Provided are a new, highly magnetically stable magnetic material which has higher saturation magnetization than ferrite-based magnetic materials, and with which problems of eddy current loss and the like can be solved due to higher electric resistivity than that of existing metal-based magnetic materials, and a method for manufacturing the same. A magnetic material powder is obtained by reducing in hydrogen Ni-ferrite nanoparticies obtained by wet synthesis and causing grain growth, while simultaneously causing nanodispersion of an ?-(Fe, Ni) phase and an Ni-enriched phase by means of a phase dissociation phenomenon due to disproportional reaction. The powder is sintered to obtain a solid magnetic material.

Abstract: Provided are: a novel magnetic material having high magnetic stability, in particular, having an extremely high saturation magnetization; and a method for producing the same, wherein the magnetic material, due to having a higher saturation magnetization than ferrite magnetic materials and a higher electrical resistivity than existing metallic magnetic materials, resolves problems such as eddy current loss. According to the present invention, Co-ferrite nanoparticles obtained by wet synthesis are reduced in hydrogen and subjected to grain growth, and bcc- or fcc-(Fe, Co) phases and Co-enriched phases are nano-dispersed using phase separation via a disproportionation reaction to prepare a magnetic material powder. In addition, the magnetic material powder is sintered into a solid magnetic material.

Abstract: The purpose of the present invention is to provide: a new magnetic material which exhibits high magnetic stability and excellent oxidation resistance and which can achieve both significantly higher saturation magnetization and lower coercive force than a conventional ferrite-based magnetic material by using a magnetic material obtained by nanodispersing ?-(Fe,M) phases and M component-enriched phases (here, the M component is at least one component selected from among Zr, Hf, V, Nb, Ta, Cr, Mo, W, Cu, Zn and Si); and a method for producing same. This magnetic material powder exhibits high moldability, and is such that ?-(Fe, M) phases and M-enriched phases are nanodispersed by chemically reducing M-ferrite nanoparticles, which are obtained by means of wet synthesis, in hydrogen and utilizing phase separation by means of a disproportionation reaction while simultaneously carrying out grain growth. Furthermore, a solid magnetic material is obtained by sintering this powder.

Abstract: Provided are a new, highly magnetically stable magnetic material which has higher saturation magnetization than ferrite-based magnetic materials, and with which problems of eddy current loss and the like can be solved due to higher electric resistivity than that of existing metal-based magnetic materials, and a method for manufacturing the same. A magnetic material powder is obtained by reducing in hydrogen Ni-ferrite nanoparticies obtained by wet synthesis and causing grain growth, while simultaneously causing nanodispersion of an ?-(Fe, Ni) phase and an Ni-enriched phase by means of a phase dissociation phenomenon due to disproportional reaction. The powder is sintered to obtain a solid magnetic material.

Abstract: A ball recirculation tube (4) forms a passage connecting two separated portions of a ball-rolling passage of a ball screw device (1) to cause balls (6) to recirculate. An outer portion (4a, 4b) of the ball recirculation tube (4) that constitutes an outer end located radially farthest from the center axis of a screw shaft (2) has an adjustable portion used to adjust the distance from the center axis of the screw shaft (2) to the outer end. This facilitates attachment of a member fitted on a nut and the ball recirculation tube (4).

Abstract: An object is to reduce the load on a driving device for turning a screw shaft (2) in a cooling liquid discharge apparatus (10) for use in a ball screw apparatus (100) used in a machine tool or the like to make the apparatus compact and to prevent an increase in the manufacturing cost. The cooling liquid discharge apparatus (10) according to the invention has a housing (14) that is provided with proximity portions (5d, 6f) that extend radially inwardly to be close to the screw shaft 2 and reservoirs (11, 12, 13) that temporally store cooling liquid (8), which are arranged alternately along the axial direction, and discharge ports (5e, 6e, 6g) through which cooling liquid (8) is discharged from the reservoirs (11, 12, 13).

Abstract: The present invention provides ferromagnetic iron nitride particles, in particular, in the form of fine particles, and a process for producing the ferromagnetic iron nitride particles. The present invention relates to a process for producing ferromagnetic iron nitride particles, comprising the steps of mixing metallic iron obtained by mixing at least one compound selected from the group consisting of a metal hydride, a metal halide and a metal borohydride with an iron compound, and then subjecting the obtained mixture to heat treatment, with a nitrogen-containing compound; and then subjecting the resulting mixture to heat treatment, in which a reduction step and a nitridation step of the iron compound are conducted in the same step, and the at least one compound selected from the group consisting of a metal hydride, a metal halide and a metal borohydride is used as a reducing agent in the reduction step, whereas the nitrogen-containing compound is used as a nitrogen source in the nitridation step.

Abstract: A method of producing core/shell composite nano-particles exhibiting superior characteristics, by using as cores nano-particles heat treated in advance so as to give them a specific crystal structure in a state using a barrier layer to prevent sintering and forming shells on their surface, which eliminates hindrances to the shell forming reaction due to the phase transfer catalyst or other strongly sticky dispersant, is provided.

Abstract: A FePt alloy nanoparticle, which is expected to be a promising material used for an ultra-high-density magnetic recording medium of the next generation, is ordered by heat treatment to have high magnetic anisotropy, but there has been a problem that the particles are coalesced with each other and agglomerate during the heat treatment. According to the present invention, each particle of the alloy nanoparticles is covered with a coating such as SiO2, and thereafter a heat treatment for ordering is carried out. In this method, the alloy nanoparticles do not coalesce with each other even if the heat treatment is performed at such a high temperature as to allow all the particles to be fully ordered. After the heat treatment, only the coating is removed using an acid or alkali solution so that it is possible to obtain ordered alloy phase nanoparticles which are ordered and dispersible in various solutions.