Abstract: Provided is a steam turbine plant activation control device that can flexibly handle an initial state amount of a steam turbine plant and activate a steam turbine at a high speed. The activation control device 21 for the steam turbine plant includes a heat source device 1 configured to heat a low-temperature fluid using a heat source medium and generate a high-temperature fluid, a steam generator 2 for generating steam by thermal exchange with the high-temperature fluid, a steam turbine 3 to be driven by the steam, and adjusters 11, 12, 13, 14, 15 configured to adjust operation amounts of the plant.

Abstract: Providing a steam turbine power plant that can be safely activated at a high speed while maintaining thermal stress at a level equal to or lower than a limit in consideration of operational results of the plant, and a method for activating the steam turbine power plant.

Abstract: A start control unit for a steam turbine plant, wherein inputting a measured value of a steam temperature fed to a steam turbine, a measured value or an estimated value of a rotor temperature of the steam turbine, and a measured value of a casing temperature of the steam turbine, and controlling a steam flow rate so as to increase the steam flow rate fed to the steam turbine when a difference between the steam temperature and the rotor temperature is smaller than a first regulated value and a difference between the rotor temperature and the casing temperature is a second regulated value or larger.

Abstract: Disclosed is a steam turbine power plant adapted to start operating very efficiently by highly accurate look-ahead control of a plurality of its startup constraints.

Abstract: Disclosed is a steam turbine power plant adapted to start operating safely even if prediction accuracy of its startup constraints cannot be obtained. The system calculates predictive values and current values of startup constraints of a steam turbine from process variables of plant physical quantities, next calculates in parallel both a first control input variable for a heat medium flow controller based on predictive values, and a second control input variable for a main steam control valve based on the current values, and while preferentially selecting the first control input variable, if the first control input variable is not calculated, selects the second control input variable instead. After the selection of at least one of the first and second control input variables, the system outputs an appropriate command value to the heat medium flow controller and the main steam control valve according to the kind of selected control input variable.

Abstract: A steam turbine power plant includes heat-source equipment that heats a low-temperature flow by applying a heat medium and thus generates a high-temperature flow, a steam generator using the high-temperature flow generated by the heat-source equipment, a steam turbine driven by the steam generated by the steam generator, an electric generator that converts rotational motive power of the steam turbine into electric power, a heat-medium controller that controls a supply rate of the heat medium supplied to the heat source equipment, a low-temperature flow controller that controls a supply rate of the low-temperature flow supplied to the heat-source equipment, a prediction device that predicts startup constraints of the steam turbine from control input variables of the controllers when the steam turbine is started, and a control input variables setter so as to prevent data predictions by the prediction device from exceeding limit values of startup constraints.

Abstract: A plastic molding die provided with a cavity where a plastic material is put in, wherein a part of an inner surface of the cavity is configured with an elastic body. A molding portion corresponding to a molding surface of a molded product is disposed on the inner surface of the cavity, and the elastic body is arranged on a portion other than the molding portion of the inner surface of the cavity. The plastic molding die may be a molding die for compression molding. The elastic body is made of rubber, and has an upper temperature limit higher than a glass-transition temperature of the plastic material. The degree of rubber hardness of the elastic body is from 50 to 100.

Abstract: A turbine rotor improved in machinability, appropriately balanced in stress, and having rotor hooks and rotor necks constructed to form an attachment structure with respect to an inverted fir tree blade root that has blade hooks and blade necks. The turbine rotor has rotor hooks and rotor necks constructed to form an attachment structure with respect to an inverted fir tree blade root that has blade hooks and blade necks with an “n” number of hooks, where n?3. In this structure, a convex portion of the innermost circumferential rotor hook is formed to be concave in a circumferential direction, with respect to a tangential line that connects a convex portion of the (n?1)th hook from the outermost circumferential rotor hook, and a convex portion of the (n?2)th hook.

Abstract: In a turbine rotor, a rotor radial-direction hook length (Hri) of an i-th rotor hook counting from the outermost circumference of the rotor and a blade radial-direction hook length (Hbi) of an i-th blade hook counting from the outermost circumference of the blade are set to satisfy the relationship of (Hri>Hbi). In the turbine blade, a rotor circumference-direction neck width (Wri) of an i-th rotor neck counting from the outermost circumference of the rotor and a blade circumference-direction neck width (Wbi) of an i-th blade neck counting from the innermost circumference of the blade are set to satisfy the relationship of (Wri>Wbi).

Abstract: A resin composition, includes: an aliphatic polyester; a second polymer compound having a glass transition point higher than a glass transition point of the aliphatic polyester; and aluminum phosphate.

Abstract: A resin composition includes an aliphatic polyester; a second polymer compound other than the aliphatic polyester; and an organic phosphoric acid compound that has a phosphorus content of about 20% by mass or more.

Abstract: There are provided plastic optical components which, in addition to their superior characteristics such as lightweightness, low cost and suitability for mass production, exhibit superior moisture barrier properties while experiencing extremely small changes in refractive index or other optical performance even if they are subjected to the effect of water in the environment; and an optical unit using such plastic optical components. The plastic optical component includes an optical component's body and an inorganic moisture-proof coating which is directly or indirectly formed by a plasma CVD process at least on surfaces of the optical component's body that contact outside air, and the plastic optical component is kept at a temperature of 80° C. or lower when the inorganic moisture-proof coating is formed by the plasma CVD process.

Abstract: The present invention provides an optical unit for high-resolution applications all lenses in which are made of plastics. The optical unit includes lens (1) and (2). The lens (1) is a plastic lens having an Abbe number of 45-60. The lens (2) is a lens injection molded from a polycarbonate material comprising a structure derived from spirobiindan and having a glass transition temperature of 120-150° C.

Abstract: The present invention provides a plastic optical component. The plastic optical component has superior characteristics including lightweightness, low cost and suitability for mass production. The plastic optical component exhibits superior moisture barrier quality while experiencing no uneven refractive index profile in their interior even if they are subjected to the effect of water in the environment. An organic-inorganic hybrid layer obtained by a sol-gel process is formed as a moisture-proof coating at least on the surfaces of the plastic optical component's body which are in contact with the outside air.

Abstract: A resin composition, includes: an aliphatic polyester; a second polymer compound having a glass transition point higher than a glass transition point of the aliphatic polyester; and aluminum phosphate.

Abstract: A resin composition includes an aliphatic polyester; a second polymer compound other than the aliphatic polyester; and an organic phosphoric acid compound that has a phosphorus content of about 20% by mass or more.

Abstract: The plastic optical element has such a characteristic that it will gain a mass increase of no more than 0.1 mass % upon moisture absorption when it is left to stand for 30 days in an atmosphere with a temperature of 40° C. and a relative humidity of 20% and then left to stand for an additional 30 days in an atmosphere with a temperature of 40° C. and a relative humidity of 90%. The plastic optical element includes a plastic substrate and a multi-layered film covering the plastic substrate. The multi-layered film includes a lower inorganic layer formed over the plastic substrate and an upper organic layer formed over the inorganic layer.

Abstract: The present invention provides a turbine rotor improved in machinability, appropriately balanced in stress, and having rotor hooks and rotor necks constructed to form an attachment structure with respect to an inverted fir tree blade root that has blade hooks and blade necks. The turbine rotor of the present invention has rotor hooks and rotor necks constructed to form an attachment structure with respect to an inverted fir tree blade root that has blade hooks and blade necks with an “n” number of hooks, where n?3. In this structure, a convex portion of the innermost circumferential rotor hook is formed to be concave in a circumferential direction, with respect to a tangential line that connects a convex portion of the (n?1)th hook from the outermost circumferential rotor hook, and a convex portion of the (n?2)th neck.

Abstract: The present invention provides a plastic optical component. The plastic optical component has superior characteristics including lightweightness, low cost and suitability for mass production. The plastic optical component exhibits superior moisture barrier quality while experiencing no uneven refractive index profile in their interior even if they are subjected to the effect of water in the environment. The plastic optical component has an optical component's body. A moisture-proof coating is directly or indirectly formed at least on surfaces of the optical component's body in contact with outside air. The moisture-proof coating is a multi-layered film including a lower inorganic layer and an upper organic layer. Sherwood number describing a water transfer process of the plastic optical component is in a range of 0.1 to 10, both inclusive.

Abstract: The present invention provides a plastic optical component. The plastic optical component has superior characteristics including lightweightness, low cost and suitability for mass production. The plastic optical component exhibits superior moisture barrier quality while experiencing no uneven refractive index profile in their interior even if they are subjected to the effect of water in the environment. The plastic optical component has a moisture-proof coating formed at least on the surfaces in contact with the outside air. During the transient period from the time when the water absorbencies of the surface and central portions of the component began to change on account of an environmental change until the time when they reach the saturated water absorbencies, the difference between the refractive indices of the surface and central portions of the component is no more than 0.0002.