Abstract: Silica glass granule having the following features: Area: 100 to 5000 ?m2, ECD: 5 to 100 ?m, Circumference: 20 to 400 ?m, Maximum diameter: 10 to 140 ?m, Minimum diameter: 5 to 80 ?m, where all values are medium values, Specific BET surface area: <1 m2/g Impurities: <50 ppm It is prepared by a) compacting pyrogenic silicon dioxide powder with a tamped density of 15 to 190 g/l to slugs, b) subsequently crushing them and removing slug fragments with a diameter of <100 ?m and >800 ?m, c) the slug fragments having a tamped density of 300 to 600 g/l, and d) subsequently treating them at 600 to 1100° C. in an atmosphere which comprises one or more compounds which are suitable for removing hydroxyl groups, and e) then sintering them at 1200° C. to 1400° C.

Abstract: Silica glass granule having the following features: Area: 100 to 5000 ?m2, ECD: 5 to 100 ?m, Circumference: 20 to 400 ?m, Maximum diameter: 10 to 140 ?m, Minimum diameter: 5 to 80 ?m, where all values are medium values, Specific BET surface area: <1 m2/g Impurities: <50 ppm It is prepared by a) compacting pyrogenic silicon dioxide powder with a tamped density of 15 to 190 g/1 to slugs, b) subsequently crushing them and removing slug fragments with a diameter of <100 ?m and >800 ?m, c) the slug fragments having a tamped density of 300 to 600 g/l, and d) subsequently treating them at 600 to 1100° C. in an atmosphere which comprises one or more compounds which are suitable for removing hydroxyl groups, and e) then sintering them at 1200° C. to 1400° C.

Abstract: Pyrogenically produced silicon dioxide doped with aluminum oxide by means of an aerosol is produced by introducing an aqueous aerosol of an aluminum salt into the flame of a pyrogenic silica producing flame hydrolysis method or a flame oxidation method. The silicon dioxide doped with Al2O3 by means of an aerosol may inter alia be used in the production of inkjet paper or inkjet films.

Abstract: The present invention aims to improve short circuit current density and photo-to-electron conversion efficiency without thickening the whole thickness of the device and increasing the number of manufacturing processes. A photovoltaic device comprises a light-transmittable base material 31, and a porous film 41b formed on the base material and adsorbing a dye. The porous film 41b adsorbing the dye 41d contains a titanium dioxide particle 41c containing aluminum oxide. The titanium dioxide particle 41c is a mixed particle of a first titanium dioxide particle doped with aluminum oxide and a second titanium dioxide particle not doped with aluminum oxide. The first titanium dioxide particle contains 70 to 95 wt. % anatase crystal, and a specific surface area by the BET method of the titanium dioxide particle 41c is 35 to 65 m2/g, and an adsorbing amount of oil of the titanium dioxide particle 41c measured by the method based on JIS K5101 is 55 to 75 ml/100 g.

Abstract: An inventive titanium dioxide particle has 70 to 95 wt % crystalline anatase, a BET specific surface area of 65 to 120 m2/g, and an oil absorption being 70 to 90 ml/100 g measured by the method according to JIS K5101, which particle exhibits uniformity, excellent preservability and dispersibility in an acidic aqueous solution. There is disclosed a photovoltaic device 10 which comprises a light-transmittable base material 11, and a porous film 21b formed on the base material 11, in which a dye is absorbed, and the porous film 21b having the dye absorbed thereon contains the inventive titanium dioxide particle.

Abstract: Glycol starting materials for manufacturing a polyester molded body containing 1 to 20% by weight of dispersed superfine ceramic powder aggregates relative to the total weight of the glycol for enabling polyester molded bodies having a high mechanical strength and transparency to be manufactured. The superfine ceramic powder aggregates dispersed in the glycol starting material have a mean particle size of 0.05 to 0.5 ?m as measured with a laser diffraction particle size distribution analyzer, and wherein the peak indicated in a particle size distribution curve of the superfine ceramic powder aggregates obtained based on the results of the measurement satisfies the relationship of w/h?0.7, wherein h is the peak height and w is the peak width at one half of the peak height (a half-width).

Abstract: Pyrogenically produced silicon dioxide doped with aluminum oxide by means of an aerosol is produced by introducing an aqueous aerosol of an aluminum salt into the flame of a pyrogenic silica producing flame hydrolysis method or a flame oxidation method. The silicon dioxide doped with Al2O3 by means of an aerosol may inter alia be used in the production of inkjet paper or inkjet films.

Abstract: Glycol starting materials for manufacturing a polyester molded body containing 1 to 20% by weight of dispersed superfine ceramic powder aggregates relative to the total weight of the glycol for enabling polyester molded bodies having a high mechanical strength and transparency to be manufactured. The superfine ceramic powder aggregates dispersed in the glycol starting material have a mean particle size of 0.05 to 0.5 &mgr;m as measured with a laser diffraction particle size distribution analyzer, and wherein the peak indicated in a particle size distribution curve of the superfine ceramic powder aggregates obtained based on the results of the measurement satisfies the relationship of w/h≦0.7, wherein h is the peak height and w is the peak width at one half of the peak height (a half-width).

Abstract: An ink jet recording material excellent in all characteristics including drying property, ink absorbency, water resistance and the like, is provided. The ink jet recording material has an ink-receiving layer comprising hydrophilic resin and inorganic pigment, the ink-receiving layer containing silica particles surface-doped with alumina as the inorganic pigment. The alumina-doped silica is prepared by a process employing flame hydrolysis techniques combined with pyrolysis. The ink-receiving layer preferably contains the alumina-doped silica in an amount ranging from 5 to 200 weight parts based on 100 weight parts of the hydrophilic resin.

Abstract: An ink jet recording material excellent in all characteristics including drying property, ink absorbency, water resistance and the like, is provided. The ink jet recording material has an ink-receiving layer comprising hydrophilic resin and inorganic pigment, the ink-receiving layer containing silica particles surface-doped with alumina as the inorganic pigment. The alumina-doped silica is prepared by a process employing flame hydrolysis techniques combined with pyrolysis. The ink-receiving layer preferably contains the alumina-doped silica in an amount ranging from 5 to 200 weight parts based on 100 weight parts of the hydrophilic resin.

Abstract: A transdermal administration preparation containing a 9-aminocyclopenta(b)quinoline, preferably 9-amino-2, 3,5,6,7,8-hexahydro-1H-cyclopentane(b)quinoline or its hydrochloride, as an active ingredient and the following transdermal absorption enhancer, that is, at least one compound selected from the group consisting of fatty acids, fatty acid esters, and alcohols, preferably the glyceride of a saturated fatty acid having 6 to 12 carbon atoms.

Abstract: A percutaneous absorption preparation which is excellent in the skin penetration of a non-narcotic analgesic buprenorphine and can sustain a high blood level in a stable state over a long period of time is provided. The percutaneous absorption preparation for administrating buprenorphine hydrochloride and/or buprenorphine, which comprises a support having on one surface thereof a plaster layer containing a pressure-sensitive adhesive, buprenorphine hydrochloride and/or buprenorphine, and a penetration enhancer, wherein the penetration enhancer comprises a combination of a monoglyceride of a fatty acid having 6 to 8 carbon atoms and isopropyl myristate, and the plaster layer contains at least 10% by weight of a monoglyceride off fatty acid having 6 to 8 carbon atoms and at least 5% by weight off isopropyl myristate, with the proviso that the content of the whole penetration enhancer ranges from 25 to 50% by weight.