Abstract: A once-through forced air-cooled heat sink according to the present invention comprises: a heat sink portion which is configured to be attached to an object that is to be cooled; and a blower for introducing cooling air into the heat sink portion. The heat sink portion comprises: an air inlet; an air outlet; and fins for dissipating heat in the object with the aid of cooling air which is supplied by the blower. The air inlet, the air outlet, and the fins are arranged such that the cooling air is introduced from the air inlet, then cools the fins and flows to the air outlet in a once-through pattern.

Abstract: A separator for use in zinc/bromine secondary batteries comprising a polyethylene having an overall viscosity average molecular weight of not less than 350,000 and not more than 2,000,000 containing not less than 10 wt. % and not more than 80 wt. % of a polyethylene having a molecular weight of 1,000,000 or more and fine particulate silica, wherein the ratio by weight of polyethylene/fine particulate silica is more than 1 and less than 1.5, and the ratio of the number of silicon atoms (Si) to the number of carbon atoms (C), Si/C, exposed on the surfaces of said separator excluding cross-sectioned surfaces thereof is not less than 0.01 and less than 0.2 as determined by X-ray photoelectron spectroscopy (XPS).

Abstract: In lamp unit 10 having light source lamp 1, reflector 2 for reflecting light from light source lamp 1, reflector holding member 11, and reflector cover 15, a plurality of cooling holes 18a are formed in a region of reflector holding member 11 provided with lamp unit positioner 16a. Cooling holes 18a are open toward an upper bulb area, a lower bulb area, and a cathode of the light source lamp, respectively. Stud 22a for fixing reflector holding member 11 has a throughhole extending at the center thereof, so that cooling air fed from high static pressure blower 27 can be sent to cooling holes 18 through tube 28 and the throughhole of stud 22a, thus efficiently cooling the upper bulb area, lower bulb area, and cathode of light source lamp 1 in a concentrative manner with a small amount of air. Thus, the resulting lamp unit, provided by the present invention, can reduce the amount of air required for cooling the lamp, and can use a high static pressure and small fan.

Abstract: A microporous polyethylene film, including a blend that contains a high density polyethylene copolymer which has a melt index (MI) of 0.1 to 100 and a content of an ?-olefin unit with 3 or more carbon atoms of 0.1 to 1% by mole; and a high density polyethylene which has a viscosity average molecular weight (Mv) of at least 500000 to 5000000, wherein the above described blend has an Mv of 300000 to 4000000 and a content of an ?-olefin unit with 3 or more carbon atoms of 0.01 to 1% by mole.

Abstract: A separator for metal/halogen batteries is provided which is excellent in thermal resistance, resistance to stress-cracking and electric properties. A separator for metal/halogen batteries comprising a polyolefin having a viscosity average molecular weight of not less than 350,000 and not more than 2,000,000, in which polyolefin the proportion by weight of a polyolefin having a molecular weight of not less than 1,000,000 is not less than 15% and not more than 80%, and a hydrophilic fine particulate inorganic material(s), wherein the weight ratio of the polyolefins to the hydrophilic fine particulate inorganic material(s) is not less than 0.55 and less than 1, said separator having a pore volume of not less than 900 mm3/g and a thickness of 0.2 to 1.0 mm.

Abstract: A method for manufacturing a hair clipper blade includes providing a blank with a comb teeth shaped cutting edge portion, and forging the cutting edge portion to have an acute tip angle.

Abstract: An ionic polymer that binds to an ionic polymer such as DNA is identified. In order to identify an ionic polymer that is positively charged, for example, another, negatively charged, polymer is immobilized on a substrate or a bead. A positively charged ionic polymer is adsorbed on the substrate or bead. When the surrounding ionic environment is suddenly decreased, the adsorbed complex is stabilized, whereas the structure of the immobilized, non-adsorbed ionic polymer becomes unstable. By providing the immobilized ionic polymer with a marker for differentiating a stable structure from an unstable one, it can be determined on which immobilized ionic polymer the ionic polymer to be identified has been adsorbed.

Abstract: A method for manufacturing a hair clipper blade includes providing a blank with a comb teeth shaped cutting edge portion, and forging the cutting edge portion to have an acute tip angle.

Abstract: An ionic polymer that binds to an ionic polymer such as DNA is identified. In order to identify an ionic polymer that is positively charged, for example, another, negatively charged, polymer is immobilized on a substrate or a bead. A positively charged ionic polymer is adsorbed on the substrate or bead. When the surrounding ionic environment is suddenly decreased, the adsorbed complex is stabilized, whereas the structure of the immobilized, non-adsorbed ionic polymer becomes unstable. By providing the immobilized ionic polymer with a marker for differentiating a stable structure from an unstable one, it can be determined on which immobilized ionic polymer the ionic polymer to be identified has been adsorbed.

Abstract: A separator for use in zinc/bromine secondary batteries comprising a polyethylene having an overall viscosity average molecular weight of not less than 350,000 and not more than 2,000,000 containing not less than 10 wt. % and not more than 80 wt. % of a polyethylene having a molecular weight of 1,000,000 or more and fine particulate silica, wherein the ratio by weight of polyethylene/fine particulate silica is more than 1 and less than 1.5, and the ratio of the number of silicon atoms (Si) to the number of carbon atoms (C), Si/C, exposed on the surfaces of said separator excluding cross-sectioned surfaces thereof is not less than 0.01 and less than 0.2 as determined by X-ray photoelectron spectroscopy (XPS).

Abstract: A separator for metal/halogen batteries is provided which is excellent in thermal resistance, resistance to stress-cracking and electric properties. A separator for metal/halogen batteries comprising a polyolefin having a viscosity average molecular weight of not less than 350,000 and not more than 2,000,000, in which polyolefin the proportion by weight of a polyolefin having a molecular weight of not less than 1,000,000 is not less than 15% and not more than 80%, and a hydrophilic fine particulate inorganic material(s), wherein the weight ratio of the polyolefins to the hydrophilic fine particulate inorganic material(s) is not less than 0.55 and less than 1, said separator having a pore volume of not less than 900 mm3/g and a thickness of 0.2 to 1.0 mm.

Abstract: A separator for use in zinc/bromine secondary batteries comprising a polyethylene having an overall viscosity average molecular weight of not less than 350,000 and not more than 2,000,000 containing not less than 10 wt. % and not more than 80 wt. % of a polyethylene having a weight average molecular weight of 1,000,000 or more and fine particulate silica, wherein the ratio by weight of polyethylene/fine particulate silica is more than 1 and less than 1.5, and the ratio of the number of silicon atoms (Si) to the number of carbon atoms (C), Si/C, exposed on the surfaces of said separator excluding cross-sectioned surfaces thereof is not less than 0.01 and less than 0.2 as determined by X-ray photoelectron spectroscopy (XPS).

Abstract: A metal cord for reinforcing a rubber article is made by twisting three or more metal filaments. At least one or at most the total number minus two of the metal filaments have a larger shaping ratio in the diametrical direction of the cord than the other metal filaments. At least one of the metal filaments having a larger shaping ratio is kept out of contact at portions in the longitudinal direction with a metal filament or filaments arranged in juxtaposition at one side or both sides thereof. At least two adjacent ones of the metal filaments having a smaller shaping ratio are in contact with each other.

Abstract: A metal cord is formed by twisting two spirally preshaped metal filaments together with a twisting pitch P. The metal filament has not only the spiral shape formed by twisting, but retains so much of its spiral preshape as to have a pitch p equal to 0.20-0.50 times the twisting pitch and a diametric height h of 0.05-0.25 mm. The retained spiral shape is in the same rotary direction as the direction in which the filaments are twisted together.

Abstract: A composite material made of metal and rubber for use in automotive tires, hoses, conveyor belts and the like. Its object is to increase its durability by improving the adhesion properties between the metal and the rubber. To accomplish this object, a metal provided with an improved plating layer is used in combination with a rubber having such a composition as to be suitable for use with the metal. More specifically, the composite material of metal and rubber contains as basic ingredients a metal plated with a copper-zinc-nickel ternary alloy and natural rubber or synthetic isoplene rubber containing sulfer and adhesion promotors such as cobalt salt of organic acid or silica, resorcin and hexamethylenetetramine. The rubber is vulcanized to be bonded to the metal.

Abstract: A process for producing a metal wire for use as a reinforcement of rubber products, in which the step of drawing a steel wire is preceded by a preliminary treatment that includes the step of smoothing the surface of the steel wire by electropolishing and the step of forming on the smoothed surface of the steel wire a coating of any one metal selected from the group consisting of copper, zinc, a copper-zinc binary alloy, and a ternary alloy which is composed of copper, zinc and third element selected from among nickel, cobalt, tin and iron.

Abstract: A moldable composition, which comprises polyamide incorporated with at least one polymer selected from the group consisting of hydrogenated block copolymer and ethylene-containing polymer, and with a specified modified block copolymer each in a specified ratio and amount, having excellent impact resistance and good balance of properties among stiffness, heat resistance and weld zone strength, as well as good moldability and excellent appearance of molded articles which have utility in a wide field of application including automobile parts, electric appliance parts and electronic parts.

Abstract: A moldable composition, which comprises polyamide incorporated with at least one polymer selected from the group consisting of hydrogenated block copolymer and ethylene-containing polymer, and with a specified modified block copolymer each in a specified ratio and amount, having excellent impact resistance and good balance of properties among stiffness, heat resistance and weld zone strength, as well as good moldability and excellent appearance of molded articles which have utility in a wide field of application including automobile parts, electric appliance parts and electronic parts.