Abstract: Provided is a piston ring capable of maintaining an excellent effect of preventing aluminum cohesion in a high output engine over a long period of time. At least one of the upper, lower, and side faces of the piston ring is coated with a silica-based coating in which hard nanoparticles are dispersed. The coating has a Martens hardness of 1,000 to 8,000 N/mm2. As the hard nanoparticles, carbon nanoparticles, nanodiamond particles, carbon nanotubes, or carbon nanofibers are used. To the coating, resin particles of a fluorine-based resin or a polyether-based resin may be added.

Abstract: A piston ring having a resin-based film covering at least one of the upper and lower sides, wherein the resin-based film contains a fibrous filler with a mean fiber diameter of 50 to 500 nm and an aspect ratio of 30 to 500, wherein the fibrous filler in the resin-based film to align roughly parallel to the film surface.

Abstract: [OBJECT] To provide a piston ring which, when used in a high-output engine, can sustain an excellent effect of suppressing aluminum adhesion, over a long period. [SOLUTION MEANS] Either or both the upper and lower sides of the piston ring are covered with a resin-based film containing a fibrous filler with a mean fiber diameter of 50 to 500 nm and an aspect ratio of 30 to 500. The fibrous filler content is 0.5 to 10 vol % with respect to the total resin-based film. Also, the fibrous filler used is at least one type from among carbon fibers, silica fibers and boron nitride fibers.

Abstract: Provided is a piston ring capable of maintaining an excellent effect of preventing aluminum cohesion in a high output engine over a long period of time. At least one of the upper, lower, and side faces of the piston ring is coated with a silica-based coating in which hard nanoparticles are dispersed. The coating has a Martens hardness of 1,000 to 8,000 N/mm2. As the hard nanoparticles, carbon nanoparticles, nanodiamond particles, carbon nanotubes, or carbon nanofibers are used. To the coating, resin particles of a fluorine-based resin or a polyether-based resin may be added.

Abstract: A piston ring mounted in the ring groove of an aluminum alloy piston does not cause aluminum adhesion during the long-term use. The piston ring includes a resin film deposited on at least one of an upper face and a lower face. The resin film contains from 0.5 to 20% by volume of carbon black particles and from 3 to 30% by volume of solid lubricant particles with respect to the total volume of the resin film. The carbon black particles preferably contain one or both of graphitized carbon black particles and composite graphite black particles.

Abstract: The present invention provides a gel beverage composition for comprehensive nutritional supplementation, having balanced nutrients, refreshing taste, a low pH, a soft gel form suitable for drinking/eating and the ability to retain its gel form for a long period of time. The composition is a gel which has a pH ranging from 3-4 and contains 5-20% by weight of saccharide, 0.1-5% by weight of fat, 2.5-6% by weight of protein material which does not coagulate at pH 3-4, 0.2-3% by weight of citric acid, 0.2-1.5% by weight of at least one acid component selected from the group consisting of ascorbic acid, tartaric acid, succinic acid, malic acid, gluconic acid, phosphoric acid, phytic acid, lactic acid and trisodium citrate, 0.01-0.5% by weight of an emulsifying agent, 0.1-1% by weight of agar and 65-90% by weight of water.

Abstract: The present invention provides a gel composition for protein and calcium supplementation having a pH in the range of 3 to 4 and containing the following components: 3 to 8 wt. % of Protein or its hydrolysate that does not coagulate at pH 3 to pH 4; 0.1 to 0.5 wt. % of calcium; 0.5 to 3 wt. % of acidulant; 4 to 20 wt. % of carbohydrate; 0 to 5 wt. % of fat; 0 to 0.5 wt. % of emulsifying agent; 0.1 to 1 wt. % of agar; and 65 to 90 wt. % of water.

Abstract: The present invention provides a process for producing an acidic beverage comprising incorporating into the acidic beverage a substance effective for inhibiting the proliferation of acidophilic bacteria, such as an aqueous extract of grape seeds and the like; an acidic beverage obtained by the process wherein the proliferation of acidophilic bacteria is inhibited; and an acidophilic bacteria proliferation inhibitor to be used in acidic beverages comprising, as an active component, the above-mentioned substance effective for inhibiting the proliferation of acidophilic bacteria.

Abstract: The present invention provides a technique for rapidly and easily detecting and identifying a harmful acidophilic bacterium mixed in a beverage or like sample. The method comprises performing PCR using a primer pair of a specific combination of nucleic acid primers each comprising the nucleotide sequence shown in one of SEQ ID NOS: 1 to 14, to detect and identify an acidophilic bacterium in a sample.

Abstract: The present invention provides a food composition for inhibiting the formation of an intestinal putrefactive product, containing lactosucrose as an effective component. This food composition is low in calorific value because the lactosucrose is indigestible, and can decrease the amount of an putrefactive product to be generated in intestines. Accordingly, this food composition effectively prevents the outbreak of a variety of cancers for which the putrefactive product might serve as a promoter.