Abstract: In an assembly of a hollow poppet valve and a valve seat insert, the hollow poppet valve's head is integrally formed with a stem end, a hollow part is formed from the head to a stem, and coolant is filled into the hollow part along with an inert gas. The valve seat insert is formed of iron base sintered alloy and obtained by integrating two layers of a supporting material side layer and a valve contact face side layer. The hollow poppet valve is formed of a material having thermal conductivity of 5-45 (W/m·K) at 20-1000° C. The valve seat insert includes the supporting material side layer having thermal conductivity of 23-50 (W/m·K) at 20-300° C. and a valve contact face side layer having thermal conductivity of 10-22 (W/m·K) at 20-300° C. This enables a valve temperature decrease throughout an engine's entire RPM range compared with the prior art.

Abstract: Disclosed is an optical detector in which a boundary line BY defining an edge of a semiconductor region 14 is covered with signal read wiring E3 and a capacitor is configured between the semiconductor region 14 and the signal read wiring E3. High frequency components peak components of a carrier are quickly extracted to the outside via the capacitor, but the signal read wiring E3 covers the boundary line BY so that a semiconductor potential in the vicinity of the boundary line is stabilized and an output signal is stabilized.

Abstract: A photodiode array has a plurality of photodetector channels formed on an n-type substrate having an n-type semiconductor layer, with a light to be detected being incident to the photodetector channels. The array comprises: a p?-type semiconductor layer on the n-type semiconductor layer of the substrate; resistors is provided to each of the photodetector channels and is connected to a signal conductor at one end thereof; and an n-type separating part between the plurality of photodetector channels. The p?-type semiconductor layer forms a pn junction at the interface between the substrate, and comprises a plurality of multiplication regions for avalanche multiplication of carriers produced by the incidence of the light to be detected so that each of the multiplication regions corresponds to each of the photodetector channels.

Abstract: A spring connector includes a plunger; a contact member; and a spring for urging the plunger and the contact member so as to separate the plunger and the contact member from each other. The spring is an insulation coated metallic wire which is molded into a coil-like shape. Metal is exposed from both end faces of the insulation coated metallic wire, and at least one end part of the spring is bent inward.

Abstract: A wide angle lens consists of a negative first lens group, a positive second lens group, a stop, and a positive third lens group in order from the object side. The first lens group includes two negative meniscus lenses, each with a convex surface on the object side. The second lens group includes one pair of cemented lenses. The third lens group includes two pairs of cemented lenses and at least one aspherical surface.

Abstract: A light receiving region includes a plurality of light detecting sections 10. The light detecting sections 10 has a second contact electrode 4A. The second contact electrode 4A is arranged at a position overlapping a first contact electrode 3A, so as to contact the first contact electrode. Further, a resistive layer 4B is continued to the second contact electrode 4A.

Abstract: A light receiving region includes a plurality of light detecting sections 10. The light detecting sections 10 has a second contact electrode 4A. The second contact electrode 4A is arranged at a position overlapping a first contact electrode 3A, so as to contact the first contact electrode. Further, a resistive layer 4B is continued to the second contact electrode 4A.

Abstract: Provided is a process for producing a dispersion liquid of carbon nanotube aggregates in which the carbon nanotube aggregates are dispersed in a dispersion medium, comprising the two steps: (A) a step of adsorbing a dispersant to carbon nanotube aggregates by physical dispersion treatment in a dispersion medium to prepare a carbon nanotube paste with a particle size of 100 nm to 20 ?m resulting from partial dissociation of a mass of the carbon nanotube aggregates; and (B) a step of dispersing the carbon nanotube paste by ultrasonic dispersion treatment. A process for producing a dispersion liquid of carbon nanotube aggregates with reduced destruction and breakage of graphite structure of a carbon nanotube aggregate can be provided.

Abstract: A pipe joint for preventing fine particles generated when a male threaded member and a female threaded member are threadedly engaged with each other from entering a fluid passage thus maintaining a high degree of cleanliness. Joint members are joined to each other by a male threaded member formed on one joint member and a female threaded member formed on the other joint member. A cover portion which covers outer peripheral surfaces of abutting portions of both joint members is formed on the male threaded member.

Abstract: There are provided a pair of roof rails, a roof panel, a front header, a pair of front pillars, a windshield provided between the front header and the front pillars, a front inclination roof reinforcement extending rearward, a front portion of which is joined to the front header, and partition members provided inside the front header at respective positions which do not overlap with, in a vehicle width direction, the front inclination roof reinforcement. Thereby, vertical vibrations of the front header caused by vertical vibrations of the windshield can be suppressed with a light structure, so that the comfortability of the ride (the vibration damping performance) can be improved.

Abstract: There are provided a pair of roof rails, a roof panel, a front header, a pair of front pillars, and a pair of center pillars, and a pair of front inclination roof reinforcements provided at a lower face of the roof panel. Each of the front inclination roof reinforcements is configured to extend obliquely from its front portion which is joined to the front header to its rear portion which is positioned on an outward side, in a vehicle width direction, relative to the front portion and joined to a portion located in the vicinity of a joint portion of the center pillar and the roof rail. Thereby, the torsional rigidity of a vehicle body can be properly improved, so that the maneuverability/stability of a vehicle can be improved.

Abstract: A light receiving region includes a plurality of light detecting sections 10. The light detecting sections 10 has a second contact electrode 4A. The second contact electrode 4A is arranged at a position overlapping a first contact electrode 3A, so as to contact the first contact electrode. Further, a resistive layer 4B is continued to the second contact electrode 4A.

Abstract: A pipe joint includes first and second joint members having fluid channels communicating with each other, an annular gasket to be interposed between abutting end surfaces of the both joint members, and a nut configured to couple the joint members. The nut is provided with an inner surface treated layer. The inner surface treated layer includes a Co (cobalt)-P (phosphorous) alloy metal coating provided on an inner surface of the nut and a fluorine coating provided on the surface of the alloy metal coating.

Abstract: An imaging lens is substantially constituted by: a negative first lens group; a positive second lens group; an aperture stop; a positive third lens group; and a negative fourth lens group; provided in this order from an object side. The first lens group is constituted only by two or more negative lenses. The second lens group has a positive lens at the most object side thereof. The third lens group has a negative lens having a concave surface toward the object side at the most object side thereof. The fourth lens group is constituted by a single negative lens. The fourth lens group moves from the object side to an image side when changing focus from an object at infinity to an object at an extremely close distance. Only the fourth lens group moves during focusing operations.

Abstract: An eyepiece optical system substantially composed of a first lens having a positive refractive power with a convex surface on the eye point side, a second lens having a negative refractive power with a concave surface on the object side, and a third lens having a positive refractive power with an absolute value of radius of curvature of the eye point side surface being smaller than an absolute value of radius of curvature of the object side surface, disposed in order from the object side. The first lens to the third lens are all single lenses and, when the average refractive index of the first lens to the third lens is taken as NdH, the eyepiece optical system satisfies a conditional expression (1): 1.80<NdH.

Abstract: An exhaust gas purification control device for an internal combustion engine is provided with: a detection unit for detecting an air-fuel ratio or rich/lean state of exhaust gas that flows out of a first catalyst disposed at upstream side; estimating unit for estimating the oxygen adsorption amount on the first catalyst and a second catalyst; and an enrichment control unit for enriching or set the degree of richness temporarily by varying the degree of richness of injected fuel when the amount of the oxygen adsorption on the first catalyst and the second catalyst is estimated to be equal to or greater than a predetermined value. The enrichment control unit sets the degree of richness of the injected fuel to a first degree of richness that is greater than stoichiometry from the start of the enrichment process, and maintains the first degree of richness even after the output of the detection unit has reached a stoichiometric air-fuel ratio or rich/lean value.

Abstract: Each semiconductor chip of a detector comprises a semiconductor substrate having a plurality of photodetector units, an insulating layer formed on a front face of the semiconductor substrate, a common electrode arranged on the insulating layer, a readout line for electrically connecting a quenching resistance of each photodetector unit and the common electrode to each other, and a through electrode extending from the common electrode to a rear face of the semiconductor substrate through a through hole of the semiconductor substrate.

Abstract: A highly wear-resistant valve seat insert is provided. When an iron-based powder, a hard-particle powder, and a graphite powder are mixed to obtain a mixed powder, for formation of a layer on a valve-contacting face side, the hard-particle powder having an average particle size 15-50 ?m, and the iron-based powder having an average particle size 15-50 ?m are blended so a matrix part composition after sintering is a composition containing C: 0.3 to 2.0% by mass, one or more kinds selected from Co, Si, Ni, Mo, Cr, Mn, S, W, and V at 70% by mass or less in total, the balance being Fe and unavoidable impurities and a matrix part structure after sintering is a structure which contains hard-particles at from 10 to 65% by mass with respect to a total amount of a layer on a valve-contacting face side and disperses the hard-particles at 1000 particles/mm2 or more.