Abstract: A base material for mounting electronic components is provided which has a low density and a coefficient of thermal expansion close to that of aluminum and can be processed with ease. The base material essentially consists of aluminum or an aluminum alloy reinforced with carbon fibers with a volume fraction ranging from 0.15 to 0.55, the carbon fibers in the base material being arranged at random on a surface for mounting an electronic component and being arranged in layer in a direction vertical to the above-described surface.

Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support and having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains a gelatin comprising an iron ion of 0.5 ppm to 5 ppm and .alpha.-constituent having weight-average molecular weight of 80,000 to 120,000 in an amount of not less than 40% by weight of the gelatin.

Abstract: A silver halide photographic light-sensitive material forming a black and white image is disclosed. The silver halide in the silver halide emulsion layer is silver chlorobromide having a silver chloride content of not less than 90 mol % and containing virtually no silver iodide; the emulsion layer contains a coupler selected from resorcinol-based dye-forming couplers and aminophenol-based dye-forming couplers, and gelatin in a coating weight of 1.0 to 1.5 g/m.sup.2. The silver halide photographic light-sensitive material is processed by color development to form a black and white image.

Abstract: A silver halide color photographic light sensitive material excellent in both sharpness and whiteness of background while being capable of satisfactorily displaying the yellow coupler characteristics including an excellent color reproduction is provided, wherein the silver halide color photographic light sensitive material contains a compound represented by the following Formula [I] in at least one of the photographic component layers thereof, a compound represented by the following Formula [II] in at least one of the silver halide emulsion layers thereof, and a compound represented by the following Formula [III] in at least one of the photographic component layers; and ##STR1##

Abstract: A silver halide black and white photographic light-sensitive material which is improved in pressure resistance and storage stability is disclosed comprising a support having thereon a silver halide emulsion layer comprising silver halide grains, wherein said silver halide grains contain rhodium in an amount of 10.sup.-8 to 10.sup.

Abstract: A silver halide color light-sensitive material is disclosed. The light-sensitive material comprises a support and a silver halide emulsion layer provided on the support. The emulsion layer comprises silver halide grains which have been formed in the presence of a complex of rhenium, molybdenum, iridium, rhodium, ruthenium, osmium, cadmium, zinc, palladium, platinum, gold, iron, nickel, cobalt, tungsten, or chromium each having at least one cyanate ligand, isocyanate ligand or fluminate ligand. The light-sensitive material is high in speed, low in fog and excellent in reciprocity low failure characteristics.

Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support and a silver halide emulsion layer provided on the support, and the silver halide emulsion layer comprises a hydrogen peroxide-treated gelatin in a ratio of not lower than 20% by weight to the total amount of gelatin contained in the silver halide emulsion layer and silver halide grains composed of silver chlorobromide having a silver chloride content of not lower than 90 mol %. The light-sensitive material is improved in the stability of emulsion coating solutions.

Abstract: A vacuum switch contact material consists essentially of a mixture of Cu and Cr.sub.x O.sub.y (x=1 to 2, y=0 to 3) wherein Cr.sub.x O.sub.y is in a particulate state, the center part of the particles consists of Cr.sub.2 O.sub.3 (x=2, y=3), and the peripheral part of the particles consists of Cr (x=1, y=0). The Cr.sub.x O.sub.y particles having Cr.sub.2 O.sub.3 central part and Cr periphery can be formed by reducing the surface of Cr.sub.2 O.sub.3 particles. Cu may be infiltrated into the open pores of Cr.sub.x O.sub.y particles after a green compact of Cr.sub.2 O.sub.3 is formed. Alternatively, a mixture of Cr.sub.2 O.sub.y particles and Cu particles may be formed into a green compact, which may then be sintered. Still alternatively, a mixture of Cr.sub.2 O.sub.y particles and Cu particles may be hot-pressed.

Abstract: A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material comprises a support having thereon a silver halide emulsion layer containing silver halide grains each containing an iridium compound and a compound containing iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium or platinum; elemental sulfur; and two kinds of specified monomethine cyanine sensitizing dyes. The light sensitive material is improved in the reciprocity law failure property and the sensitivity fluctuation due to variation of atmosphere humidity.

Abstract: A silver halide photographic emulsion containing silver halide grains having a silver chloride content of not less than 90 mol % and a method for preparing thereof are disclosed, wherein the silver halide grains are obtained by forming said silver halide grains in the presence of a water-soluble iridium compound and a nitrogen-containing heterocyclic compound capable of forming sparingly-soluble silver salt; and by controlling the addition of said iridium compound, whereby the photographic emulsion is improved in the dependence of gradation on exposure intensity.

Abstract: A vacuum switch contact material consists essentially of a mixture of Cu and Cr.sub.x O.sub.y (x=1 to 2, y=0 to 3) wherein Cr.sub.x O.sub.y is in a particulate state, the center part of the particles consists of Cr.sub.2 O.sub.3 (x=2, y=3), and the peripheral part of the particles consists of Cr (x=1, y=0). The Cr.sub.x O.sub.y particles having Cr.sub.2 O.sub.3 central part and Cr periphery can be formed by reducing the surface of Cr.sub.2 O.sub.3 particles. Cu may be infiltrated into the open pores of Cr.sub.x O.sub.y particles after a green compact of Cr.sub.2 O.sub.3 is formed. Alternatively, a mixture of Cr.sub.2 O.sub.y particles and Cu particles may be formed into a green compact, which may then be sintered. Still alternatively, a mixture of Cr.sub.2 O.sub.y particles and Cu particles may be hot-pressed.

Abstract: There is disclosed a monochromatic silver halide light-sensitive photographic material for printing from a color negative, which has an excellent sensitivity, sharpness, graininess and background whiteness. The photographic material is characterized by that the surface of the support on which the emulsion layer is provided has the following reflection properties:L=90 or morea*=-0.5 to 1.0b*=-5.0 to -1.

Abstract: A method of processing a light-sensitive silver halide color photographic material wherein a light-sensitive silver halide photographic material having a support and provided thereon at least one silver halide emulsion layer containing a dye-forming coupler and silver halide grains which are sensitized with specific sensitizing dyes, is processed with a color developer solution containing specific aromatic primary amine color developing agents.

Abstract: A sintered electric contact material for use in vacuum switch tubes comprises about 50 to 70% by volume of a Cr powder, about 0.1 to 1.15% by volume of a Ti powder, and the remainder of a Cu powder. The sintered material can be obtained advantageously by heating a mixture of the Cr powder, the Ti powder and the Cu powder in a non-oxidizing atmosphere under pressure, at a temperature below the melting point of Cu (the melting point is 1083.degree. C. at normal pressure).

Abstract: A silver halide color photographic light sensitive material and a image forming method using the photographic material. The photographic material comprises a support having thereon a silver halide emulsion layer containing silver halide grains having a silver chloride content of not less than 90 mol %, a cyan coupler represented by the following formula C-1 and a nitrogen-containing hetero-cyclic mercapto compound. ##STR1## The photographic material is developed with a color developer substantially not containing benzyl alcohol for a time not more than 2 minutes 30 seconds. An color image having preferable light-absorption characteristics and a high maximum density is obtained. The photographic material is also excellent in storage stability.

Abstract: In manufacturing contact materials which satisfy all the criteria required for use in vacuum switches as to chopping current, circuit breaking performance, withstanding voltage, welding separation force and wear, Cu powder and Ta.sub.2 O.sub.5 powder are mixed, and compressed while heating below the melting point of Cu in a nonoxidizing atmosphere. Alternatively a green compact is first manufactured from Ta.sub.2 O.sub.5 powder or a mixture of Ta.sub.2 O.sub.5 and Cu powder, and molten Cu is made to infiltrate into the compact. Preparing a green compact from a mixture of Cu powder and Ta.sub.2 O.sub.5 powder, it may be sintered at a temperature below the melting point of Cu, re-pressed, and resintered at 400.degree.-900.degree. C. in a nonoxidizing atmosphere.

Abstract: A silver halide photographic light-sensitive material which has an excellent gradation and an excellent pressure resistance. The photographic material comprising a support and, provided thereon, a photographic component layer including a silver halide emulsion layer in which the sewlling degree of said photographic component layer is not higher than 150 and said silver halide emulsion layer is added with elementary sulfur.

Abstract: A contact material for a vacuum circuit breaker having excellent properties, which consists essentially of copper, molybdenum, one member selected from the group consisting of niobium and tantalum, and one or more kinds of low melting point materials.

Abstract: A silver halide photographic light-sensitive material containing inorganic sulfur or elemental sulfur, and a processing method comprising a step for developing such photographic material with a color developer which contains an aromatic primary amine compound for not more than 60 seconds. Photographic image improved in contrast of the without degradation in sensitivity and fogging can be obtained by the photographic material and the processing method.

Abstract: A silver halide light-sensitive photographic material is disclosed. The photographic material comprises a support and a blue-sensitive silver halide emulsion layer. The blue sensitive emulsion layer comprises a mixture of at least two kinds of silver halide emulsions each comprises silver chloride grains or silver chlorobromide grains containing not less than 90 mol % of silver chloride and are sensitized with a blue-sensitizing dye and have an average grain size of from 0.6 .mu.m to 0.9 .mu.m in terms of diameter of spherical grain. The average grain sizes of the two kinds of the emulsions are different from each other in the average grain size by 0.05 .mu.m or more. The coating amount of the blue-sensitizing dye contained in the blue-sensitive emulsion layer is not more than 7.0.times.10.sup.-4 g/m.sup.2.