Abstract: The present invention provides a rubber composition for coating a steel cord, use of which makes it possible to consider an effect on environment, prepare for the future decrease in supply of petroleum resources, suppress generation of air bubbles, reduce rolling resistance, and improve processability, roll workability, adhesion to a steel cord and durability with favorable balance, as compared with a rubber composition for coating a steel cord comprising raw materials derived from petroleum resources as main components, and provides a tire having a belt prepared by using the rubber composition. The rubber composition for coating a steel cord comprises 40 to 80 parts by weight of silica having a nitrogen adsorbing-specific surface area of 100 to 200 m2/g, 1 to 15 parts by weight of a silane coupling agent and 0.5 to 3 parts by weight of potassium borate, on the basis of 100 parts by weight of a diene rubber component, and the tire is prepared using the rubber composition.

Abstract: A photonic circuit board comprises a connection setting circuit, a group of electric wires for connecting the connection setting circuit and a plurality of devices, an optical I/O (input/output) device connected to the connection setting circuit and a two dimensional optical transmission medium connected to the optical I/O device and adapted to transmit optical signals. The connection setting circuit includes a circuit capable of changing the mode of connection of the group of electric wires and the optical I/O device.

Abstract: To provide a rubber composition for breaker having balanced properties among rigidity, heat resistance, adhesiveness, humid aging adhesion and elongation, and a pneumatic tire having a breaker layer or a belt layer comprising the rubber composition. A rubber composition for breaker comprises 55 to 65 parts by weight of carbon black, 5 to 15 parts by weight of silica, 3.5 to 4.5 parts by weight of sulfur, at least 0.08 part by weight of cobalt, a resorcinol resin and a methylene donor based on 100 parts by weight of a rubber component containing a natural rubber and/or an isoprene rubber as a main component.

Abstract: One inventive aspect relates to an optical information recording medium, in which the quality of a printed image is not impaired because the water resistance of a printed portion is improved. The optical information recording medium includes a porous film ink receiving layer as an outermost layer of a surface opposite to a recording and playback surface, wherein when the ink receiving layer is printed with an ink of each of four colors, cyan, magenta, yellow, and black, followed by drying, a running water test is performed, and L*a*b* values before and after the running water test are measured with a colorimeter, the total value of the square root of the sum of the square of difference in L*, the square of difference in a*, and the square of difference in b*, each between before and after the running water test, of each of the four colors is approximately 20 or less.

Abstract: One inventive aspect relates to an optical information recording medium which has a high gloss and ensures, even after printing, a gloss substantially equal to that before the printing, and which can increase quality of a printed image. The optical information recording medium has an ink absorbing layer made of a porous film, which is formed on an outermost layer on a surface thereof on the side opposed to a recording/reproducing surface of the optical information recording medium. The optical information recording medium has a surface gloss of the ink absorbing layer is about 25 or more in terms of 60° specular gloss before printing and has a level after the printing which is equal to or higher than a level before the printing.

Abstract: A pneumatic tire is equipped with at least a tread part, a sidewall part, a bead part, and a carcass extending from tread part through sidewall part to bead part, and provided with a breaker part on the outside of carcass in the radial direction of the tire. The volume resistivity of each of a tread rubber, a sidewall rubber, a breaker rubber, and a carcass rubber formed in the tread part, the sidewall part, the breaker part, and the carcass respectively is set to 1×1012 ?·cm or more. A conductive layer having volume resistivity of 1×1011 ?·cm or less is provided between a carcass ply constituting the carcass and the sidewall rubber and has an exposed part to the tire surface. A rubber cement layer contacting with at least a part of the exposed part of the conductive layer and at least a part of the region that becomes a grounding surface in the tread part to the road surface is provided.

Abstract: The objective of the present invention is to provide a pneumatic tire that can desirably prevent generation of static electricity between the road face and the tire, while maintaining a low rolling resistance, so that the safety in use is further improved. In pneumatic tire of the present invention, each of tread rubber, breaker rubber and sidewall rubber that are respectively formed on a tread section, a breaker section and a sidewall section has a volume resistivity of 1×108 ?·cm or more, with a conductive layer having a volume resistivity smaller than 1×108 ?·cm and a thickness in a range from 0.2 to 2.0 mm being formed between a carcass ply forming the carcass and the sidewall rubber, and at least either conductive layer or a rubber cement layer that is formed so as to be made in contact with conductive layer and has a volume resistivity lower than that of the tread rubber is exposed to the surface of the tire.

Abstract: A vertical cavity surface emitting laser includes an active layer between a first reflector and a second reflector and at least either the first reflector or the second reflector includes a two-dimensional photonic crystal. The two-dimensional photonic crystal has a structure 106 showing an ununiform effective refractive index distribution in the plane of the reflector to realize both a high reflectivity and transverse mode control at the same time.

Abstract: There is provided a rubber composition for a tire tread having a remained despersibility of reinforcing agents without increased rubber hardness, an improved performance on snow and ice road, and an improved abrasion resistance, and inhibited from increasing in hardness or inhibited from increasing in hardness with the passage of time. A rubber composition for a tire tread, which comprises (a) a diene rubber, (b) glass fibers, (c) a reinforcing agent, and 1 to 15 parts by weight of (d-1) inorganic powders having a Mohs hardness of less than 6.5 and an average particle-size of less than 25 ?m and/or (d-2) silicone rubber powders based on 100 parts by weight of the diene rubber.

Abstract: A pneumatic tire is provided with an electrically conductive path extending continuously from a position in the rim contacting surface to a position in the ground contacting surface through a sidewall portion, wherein a sidewall rubber is a high-performance rubber compound and almost-insulative, having a volume resistivity of not less than 1×10ˆ8 ohm cm. The electrically conductive path includes a helical path made of an electrically conductive rubber having a volume resistivity of not more than 1×10ˆ7 ohm cm. The helical path is disposed axially inside the sidewall rubber and extends spirally around the tire rotational axis. Preferably, the tread rubber, clinch rubber and carcass topping rubber are also almost-insulative high-performance rubber compounds.

Abstract: The present invention provides a rubber composition for coating a textile cord, and a tire using the rubber composition, wherein rolling resistance is lowered, and processability and rubber strength are excellent, as compared with a rubber composition for coating a textile cord comprising raw materials derived from petroleum resources as a main component, and a tire using the rubber composition, while considering environments and providing for the future decrease in petroleum resources supply. The rubber composition for coating a textile cord comprises 25 to 80 parts by mass of silica and 1 to 15 parts by mass of a silane coupling agent on the basis of 100 parts by mass of a diene rubber, wherein a nitrogen adsorbing-specific surface area of said silica is 70 to 150 m2/g.

Abstract: A rubber composition for coating a steel cord, in which processability, durability and adhesive condition can be improved with favorable balance, and a tire using the rubber composition are provided. The rubber composition for coating a steel cord comprises 40 to 70 parts by weight of silica having a nitrogen adsorbing-specific surface area of 100 to 200 m2/g, 1 to 15 parts by weight of a silane coupling agent, 12 to 20 parts by weight of zinc oxide, 3.5 to 5 parts by weight of sulfur, and an organic cobalt in an amount of 0.05 to 0.3 part by weight, converted into metal cobalt amount, on the basis of 100 parts by weight of a rubber component, and a tire is prepared using the rubber composition.

Abstract: A rubber composition for a sidewall, which is ecological, and provided for future decrease of petroleum amount supplied, and further, maintains hardness, and is excellent in crack resistance and flex crack resistance performance can be provided by increasing an amount of resources other than petroleum. A rubber composition for a sidewall, comprising 0.1 to 10 parts by weight of zinc oxide having an average particle size of at most 200 nm based on 100 parts by weight of a rubber component comprising at least 30% by weight of a natural rubber and at most 70% by weight of an epoxidized natural rubber.

Abstract: A rubber composition for an inner liner in which rubber strength can be improved without increasing rolling resistance and air permeability, and a tire having an inner liner, which comprises the same, can be provided. The rubber composition for an inner liner comprises silica in an amount of 30 to 45 parts by weight, and carbon black in an amount of not more than 5 parts by weight on the basis of 100 parts by weight of a rubber component comprising not less than 30% by weight of an epoxidized natural rubber and 70% by weight of a natural rubber; and calcium stearate in an amount of 2 to 10 parts by weight on the basis of 100 parts by weight of the epoxidized natural rubber, and the tire has an inner liner, which comprises the rubber composition.

Abstract: A rubber composition which can improve performance on icy and snowy road sufficiently and a tire using the same. The rubber composition comprises 2 to 30 parts by weight of staple fibers having an average fiber diameter of 10 to 100 ?m and an average fiber length of 0.01 to 4 mm, and 1 to 10 parts by weight of particles having a Moh's hardness of at least 5 and an average particle size of at most 500 ?m based on 100 parts by weight of a diene rubber. The tire of the present invention is prepared by using the rubber composition for tread. Examples of the particle are pumice, quarts, emery and the like.

Abstract: There is provided a rubber composition for a side wall, wherein an amount ratio of resources other than petroleum are increased so as to be ecological and take measures for the decrease in supply of petroleum in the future, which further has excellent flex crack resistance and strength. A rubber composition for a side wall comprising 20 to 60 parts by weight of silica based on 100 parts by weight of a rubber component comprising 40 to 80 % by weight of a natural rubber and 60 to 20 % by weight of at least one rubber selected from the group consisting of a butadiene rubber, a styrene-butadiene rubber and an epoxidized natural rubber, and 4 to 16 parts by weight of a silane compound represented by the following formula: Xn—Si—Y4-n (wherein X represents an ethoxy group or a methoxy group, and Y represents a phenyl group or an alkyl group) based on 100 parts by weight of silica.

Abstract: A vertical cavity surface emitting laser device includes a first reflective mirror layer, a second reflective-mirror layer, and an active layer disposed therebetween, wherein at least one of the first reflective mirror layer and the second reflective mirror layer includes a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction and a part of the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity.

Abstract: A method of manufacturing a vehicle tire comprises: making a rubber tire component by winding at least one unvulcanized rubber tape; making a green tire by assembling components including the rubber tire component; and vulcanizing the green tire, wherein the unvulcanized rubber tape is a hybrid rubber tape made of a high-performance rubber composition and a conductive rubber composition, and the conductive rubber composition forms a surface layer forming at least a part of the surface of the hybrid rubber tape. The conductive rubber composition of the windings of the hybrid rubber tape extends across the cross section of the tire component, whereby in the vulcanized tire, an electrostatic dissipative path is formed by the conductive rubber composition.

Abstract: A tire improving electric conductivity and rolling resistance performance is provided. A tire wherein an inherent resistance value is at least 109 ?·cm and the amount ratio of silica in a reinforcing filler is at least 70% by weight in a tread part, a sidewall part, a breaker part or a ply part, further having a conductive rubber layer together with the tire parts, wherein the conductive rubber layer is (a) a conductive rubber layer which contacts with a bead part and is continuously arranged to the ground contact surface of the tread part through between the sidewall part and the ply part, having an inherent resistance value of at most 108 ?·cm and a thickness of 0.1 to 5 mm, or (b) a conductive rubber layer which contacts with a bead part and is continuously arranged between the sidewall part and the ply part and between the tread part and the breaker part or in the tread part, having an inherent resistance value of at most 108 ?·cm and a thickness of 0.1 to 5 mm.

Abstract: The semiconductor device of the present invention comprises an optical transmission region, and a light receiving part for converting light propagating through the optical transmission region to an electrical signal, wherein the optical transmission region comprises a two-dimensional optical waveguide layer, and wherein at least a portion of the light receiving part is embedded in the optical transmission region, whereby the present invention can provide a semiconductor device having reduced direction dependency when light propagating through the optical transmission region is received.