Abstract: A communication system includes a relay device and a diagnosis target device. The relay device includes a port configured to connect a diagnostic tool. The diagnosis target device is connected to the relay device via a bus. When the diagnosis target device has received specific data whose source appears to be the diagnostic tool, the diagnosis target device sends an inquiry signal for inquiring of the relay device about a monitoring result for the specific data. The relay device determines in response to the inquiry signal whether the specific data is legitimate data from the diagnostic tool. The relay device sends the monitoring result including a determination result to the diagnosis target device.

Abstract: A processor of a vehicle monitoring device obtains log information of an event that has occurred in a vehicle on-board device, determines whether a diagnosis is necessary based on the obtained log information, and transmits a diagnostic data set to an external server when determining that a diagnosis is necessary. The diagnostic data set transmitted to the server by the processor includes log information based on which a diagnosis is determined to be necessary, log information that is obtained prior to the determination, and log information that is obtained after the determination.

Abstract: A communication system includes a relay device and a diagnosis target device. The relay device includes a port configured to connect a diagnostic tool. The diagnosis target device is connected to the relay device via a bus. The relay device determines whether a communication path of diagnostic data for diagnosing the diagnosis target device is correct when the relay deice has received the diagnostic data, the diagnostic data being data that is transferred between the relay device and the diagnostic tool. The relay device sends to the diagnosis target device a monitoring result including a determination result as to whether the communication path of the diagnostic data is correct.

Abstract: A dental polymerizable composition includes: a first component containing a (meth)acrylate, a pentavalent vanadium compound, and a thiourea derivative; and a second component containing a (meth)acrylate and an organic peroxide.

Abstract: A dental polymerizable composition includes: a first agent including a (meth)acrylate having an acid group and an organic peroxide, and a second agent including a (meth)acrylate having no acid group, a thiourea derivative, and a glass powder, wherein the glass powder includes aluminum, silicon, and at least one of copper or vanadium.

Abstract: One aspect of the invention includes a glass powder for a chemical polymerization initiator, the glass powder including aluminum, silicon, and at least one of copper or vanadium.

Abstract: A dental polymerizable composition includes a first agent containing a (meth)acrylate, a thiourea derivative, a vanadium compound, and a ?-diketone, and a second agent containing a (meth)acrylate and an organic peroxide.

Abstract: A dental polymerizable composition includes a first component containing a (meth)acrylate free of an acid group, a (meth)acrylate having a carboxyl group, a basic filler, and an organic peroxide; and a second component containing a (meth)acrylate free of an acid group, a vanadium compound, and a thiourea derivative.

Abstract: Disclosed is a mechanical structure steel for cold-working, including: C: 0.32 to 0.44% by mass, Si: 0.15 to 0.35% by mass, Mn: 0.55 to 0.95% by mass, P: 0.030% by mass or less, S: 0.030% by mass or less, Cr: 0.85 to 1.25% by mass, Mo: 0.15 to 0.35% by mass, and Al: 0.01 to 0.1% by mass, with the balance consisting of iron and inevitable impurities, wherein an area ratio of proeutectoid ferrite is 30% or more and 70% or less, and an average grain size of ferrite crystal grains is 5 to 15 ?m.

Abstract: A dental polymerizable composition includes: a first component containing a (meth)acrylate, a pentavalent vanadium compound, and a thiourea derivative; and a second component containing a (meth)acrylate and an organic peroxide.

Abstract: A dental polymerizable composition includes a first component containing a (meth)acrylate free of an acid group, a (meth)acrylate having a carboxyl group, a basic filler, and an organic peroxide; and a second component containing a (meth)acrylate free of an acid group, a vanadium compound, and a thiourea derivative.

Abstract: A forged titanium alloy material having a duplex grain structure composed of flat grains and non-flat grains, wherein the flat grains are crystal grains of prior-? grains each having an aspect ratio of more than 3 and the non-flat grains are crystal grains of prior-? grains each having an aspect ratio of 1 to 3 inclusive. The forged titanium alloy material is characterized in that the average equivalent circle diameter of the non-flat grains is 100 ?m or less, flat grains each having a thicknesswise diameter of 20 to 500 ?m are contained in an amount of 40 to 98%, non-flat grains each having a thicknesswise diameter of 10 to 150 ?m are contained in an amount of 2 to 50%, and the flat grains each having the above-mentioned thicknesswise diameter and the non-flat grains each having the above-mentioned thicknesswise diameter are contained in the total amount of 90% or more.

Abstract: Provided is a titanium-alloy forging material in which fatigue-strength characteristics are improved without worsening ultrasonic flaw detection. A ?-forged titanium-alloy forging material (1) is characterized in that the area ratio of non-flat grains, which are prior ?-grains (2) having an aspect ratio of 3 or less and a diameter in the forging direction of at least 20 ?m, and an ?-phase ratio at the crystal grain boundary (3) of at least 80%, is less than 10%, and the area ratio of flat grains, which are prior ?-grains having an aspect ratio greater than 3 and a diameter in the forging direction of 20-700 ?m, and an ?-phase ratio at the crystal grain boundary (3) of at least 80%, is 85% or greater, and the average orientation difference of the ?-phase crystal orientation deposited at the crystal grain boundary (3) of the flat grains is at least 6°.

Abstract: Disclosed herein is a mechanical structure steel for cold-working that includes C, Si, Mn, P, S, Al, and N and has a metal microstructure including proeutectoid ferrite and pearlite, in which a total area ratio of the proeutectoid ferrite and the pearlite with respect to the entire microstructure is 90% or more, while an area ratio Af of the proeutectoid ferrite with respect to the entire microstructure satisfies a relationship of Af?A where an A value is represented by formula (1) below, an average circle equivalent diameter of a bcc-Fe crystal grain is in a range of 15 to 30 ?m, and a pearlite lamellar spacing is 0.20 ?m or less on average: A=(103?128×[C(%)])×0.80(%)??(1) where [C (%)] in the formula (1) indicates the C content in percent by mass.

Abstract: A forging die device is provided with an upper die 10 and a lower die 20. At least one die 10 (20) of the upper die 10 and the lower die 20 has a die holder 12 (22) which surrounds the outer periphery of the die 10 (20) and holds the die 10 (20). The die holder 12 (22) is configured to bear the radial tensile stress (tensile force) received by the die 10 (20) during forging. By this means, the die 10 (20) can be miniaturized.

Abstract: A forging die device is configured in such a manner that die heating heater plates 11, 21 are disposed respectively between a die 1 which is held at the outer periphery by die holders 12, 22, and die holding means 14a, 24a composed of heat insulating plates 13, 23 and die plates 14, 24, and the die holders, the die holding means and the die plates are integrated together. After the preheated die 1 is placed on the heated die holding means, the die 1 is heated by heating means, and forming surfaces 10a, 20a of the die are heated to a required temperature immediately before forging.

Abstract: Disclosed is a pure titanium sheet having a strength corresponding to JIS Grade 2 level (215 MPa in terms of 0.2% yield strength) or more and having satisfactory stamping formability. The pure titanium sheet includes titanium and inevitable impurities, has a 0.2% yield strength of 215 MPa or more, has an average grain size d of its structure of 25 ?m or more and 75 ?m or less, and has a hexagonal crystal structure, in which respective grains in the hexagonal crystal structure have an average of Schmidt factors (SF) of (11-22) twins with a rolling direction as axes, and the average Schmidt factor (SF) and the average grain size d satisfy following Expression (1): 0.055?[SF/?d]?0.084??(1).

Abstract: A forged titanium alloy material having a duplex grain structure composed of flat grains and non-flat grains, wherein the flat grains are crystal grains of prior-? grains each having an aspect ratio of more than 3 and the non-flat grains are crystal grains of prior-? grains each having an aspect ratio of 1 to 3 inclusive. The forged titanium alloy material is characterized in that the average equivalent circle diameter of the non-flat grains is 100 ?m or less, flat grains each having a thicknesswise diameter of 20 to 500 ?m are contained in an amount of 40 to 98%, non-flat grains each having a thicknesswise diameter of 10 to 150 ?m are contained in an amount of 2 to 50%, and the flat grains each having the above-mentioned thicknesswise diameter and the non-flat grains each having the above-mentioned thicknesswise diameter are contained in the total amount of 90% or more.

Abstract: A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460×C00.1 or less (C0 indicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).

Abstract: Provided is a titanium-alloy forging material in which fatigue-strength characteristics are improved without worsening ultrasonic flaw detection. A ?-forged titanium-alloy forging material (1) is characterized in that the area ratio of non-flat grains, which are prior ?-grains (2) having an aspect ratio of 3 or less and a diameter in the forging direction of at least 20 ?m, and an ?-phase ratio at the crystal grain boundary (3) of at least 80%, is less than 10%, and the area ratio of flat grains, which are prior ?-grains having an aspect ratio greater than 3 and a diameter in the forging direction of 20-700 ?m, and an ?-phase ratio at the crystal grain boundary (3) of at least 80%, is 85% or greater, and the average orientation difference of the ?-phase crystal orientation deposited at the crystal grain boundary (3) of the flat grains is at least 6°.