Abstract: A gas turbine apparatus includes a turbine configured to be driven by a combustion gas from a combustor, an exhaust passage, an extraction line configured to extract a fluid from a combustor casing, a cooling part disposed in the extraction line and configured to cool the fluid, a return line for returning the fluid from the cooling part to an inside of the combustor casing, the return line being connected to the extraction line downstream of the cooling part, a bypass line for introducing the fluid from the cooling part to the exhaust passage by bypassing the turbine, the bypass line branching from the return line, and a communication state switching part for controlling a communication state between the extraction line and the combustor casing via the return line, and a communication state between the extraction line and the exhaust passage via the bypass line.

Abstract: A gas turbine apparatus includes a turbine configured to be driven by a combustion gas from a combustor, an exhaust passage, an extraction line configured to extract a fluid from a combustor casing, a cooling part disposed in the extraction line and configured to cool the fluid, a return line for returning the fluid from the cooling part to an inside of the combustor casing, the return line being connected to the extraction line downstream of the cooling part, a bypass line for introducing the fluid from the cooling part to the exhaust passage by bypassing the turbine, the bypass line branching from the return line, and a communication state switching part for controlling a communication state between the extraction line and the combustor casing via the return line, and a communication state between the extraction line and the exhaust passage via the bypass line.

Abstract: A back coat, a metal thin film and a top coat are applied to an outer surface of a base member of a visor cover of a vehicle door mirror device, and in particular the metal thin film is formed by vapor deposition. The film thickness of the metal thin film can accordingly be made thinner than a case of when forming a metal film by plating, and the thickness of the metal thin film is easily managed. Accordingly, unwanted deformation of the visor cover when forming the metal thin film to the outer surface of the visor cover is not occurred, or deformation occurring in the visor cover can be suppressed.

Abstract: A microbe-removing material is provided made of hydroxyapatite having a mean c-axis length of from 1 .mu.m to 1000 .mu.m, preferably from 5 pm to 200 .mu.m, and an aspect ratio of 5 or more, preferably 10 or more, having good liquid permeability, while also having high microbe-adsorbing power and large adsorption capacity. The material can remove all microbes irrespective of their sizes and can adsorb and remove even acidic microbes.

Abstract: An apatite whisker has a mean aspect ratio (length along c-axis/length along a-axis) of not less than 10.0 and contains a carbonic acid group of not less than 0.01 wt. % based on total weight of the whisker. A method for preparing an apatite whisker involves precipitating and growing an apatite from a liquid containing phosphoric acid and calcium to have a mean aspect ratio (length along c-axis/length along a-axis) of not less than 10.0.

Abstract: A multi-frequency antenna to be used commonly for reception of multiple different frequencies includes first and second rods extendably held by and through a third rod. The first rod is coupled to the second rod via a phase shifter so that when the first and second rods are fully extended, the antenna behaves as a high gain antenna for common use in an AM, FM and car telephone system.