Abstract: An image transmission apparatus for processing hierarchically encoded image information includes an accounting unit for performing accounting processing in correspondence with the resolution of the image information.

Abstract: A combined cycle power generation plant includes a gas turbine plant, a steam turbine plant operatively connected to the gas turbine plant, an exhaust gas heat recovery boiler for generating steam for driving the steam turbine plant by an exhaust gas of the gas turbine plant, an evaporator unit accommodated in the exhaust gas heat recovery boiler, the evaporator unit being divided into a first evaporator and a second evaporator, and a superheater provided for at least one of an intermediate portion between the first evaporator and the second evaporator and a portion on a downstream side of the second evaporator.

Abstract: An exhaust heat recovery boiler in which an exhaust gas discharged from a gas turbine into a boiler duct to recover a heat of the exhaust gas and ammonia is injected to and mixed with the exhaust gas to reduce nitrogen oxide contained in the exhaust gas, the exhaust heat recovery boiler comprising: a boiler duct of a horizontal installation type having an inner hollow portion along which an exhaust gas flows from an upstream side to a downstream side; a superheater; an evaporator; a denitration reactor; and an economizer, which are disposed inside the boiler duct in this order from the upstream side to the downstream side of the exhaust gas flow therein. A drum is disposed outside the boiler duct and connected to the evaporator and a downcomer pipe extending from the drum into the boiler duct.

Abstract: An image transmission apparatus for processing hierarchically encoded image information includes an accounting unit for performing accounting processing in correspondence with the resolution of the image information.

Abstract: A combined cycle power generation plant includes a gas turbine plant, a steam turbine plant operatively connected to the gas turbine plant, an exhaust gas heat recovery boiler for generating steam for driving the steam turbine plant by an exhaust gas of the gas turbine plant, an evaporator unit accommodated in the exhaust gas heat recovery boiler, the evaporator unit being divided into a first evaporator and a second evaporator, and a superheater provided for at least one of an intermediate portion between the first evaporator and the second evaporator and a portion on a downstream side of the second evaporator.

Abstract: An exhaust heat recovery boiler in which an exhaust gas discharged from a gas turbine into a boiler duct to recover a heat of the exhaust gas and ammonia is injected to and mixed with the exhaust gas to reduce nitrogen oxide contained in the exhaust gas, the exhaust heat recovery boiler comprising: a boiler duct of a horizontal installation type having an inner hollow portion along which an exhaust gas flows from an upstream side to, a downstream side; a superheater; an evaporator; a denitration reactor; and an economizer, which are disposed inside the boiler duct in this order from the upstream side to the downstream side of the exhaust gas flow therein. A drum is disposed outside the boiler duct and connected to the evaporator and a downcomer pipe extending from the drum into the boiler duct.

Abstract: A key management method, an encryption system, and a sharing digital signature system are provided, which are designed to hierarchically manage the degrees of contribution of members to a digital signature operation and the like so as to be suitably used for a group having a hierarchical structure. In an information communication system including a plurality of information processing apparatuses connected to each other through a communication line, a first member (11a) holding a secret key K and a plurality of second members (11b-11d) holding pieces of partial information K.sub.1i (i=1, 2, . . . ) generated by secret sharing of the secret key K are provided. The first member can use the secret key K as a key for the information communication system, but the second members can obtain a key for the information communication system only by collecting a predetermined number t.sub.1 or more of pieces of partial information K.sub.1i.

Abstract: An elevator system includes a counterweight assembly having a plurality of drive machines having integrally formed drive wheels adapted to frictionally engaged a guide rail for driving the counterweight assembly along the guide rail to effect movement of an elevator car.

Abstract: An exhaust heat recovery boiler in which an exhaust gas discharged from a gas turbine into a boiler duct to recover a heat of the exhaust gas and ammonia is injected to and mixed with the exhaust gas to reduce nitrogen oxide contained in the exhaust gas, the exhaust heat recovery boiler comprising: a boiler duct of a horizontal installation type having an inner hollow portion along which an exhaust gas flows from an upstream side to a downstream side; a superheater; an evaporator; a denitration reactor; and an economizer, which are disposed inside the boiler duct in this order from the upstream side to the downstream side of the exhaust gas flow therein. A drum is disposed outside the boiler duct and connected to the evaporator and a downcomer pipe extending from the drum into the boiler duct.

Abstract: There is disclosed an image transmission system for transmitting MPEG data through a transmission path, capable of setting frames for the MPEG data to be transmitted, according to the traffic in the transmission path, and effecting an accounting process with a charge system corresponding to thus set frames.