Abstract: A color radiography system comprises a color light emission sheet having a phosphor layer that contains a phosphor emitting in a plurality of colors to radiation and emits light under irradiation of radiation transmitted through a subject to be inspected, and a color film or a color camera that detects the light emissions of the plurality of colors into the respective colors. In the phosphor layer, a phosphor is used that has a primary emission component corresponding to one emission color in a visible light region and at least one secondary emission component, the secondary emission component having an emission color different from that of the primary emission component and a ratio of light emission to radiation of the same intensity being different from that of the primary emission component. According to the present color radiography system, image information of a plurality of colors having different sensitivity characteristics can be obtained.

Abstract: A sintered body of a rare earth oxysulfide is heat-treated at a temperature of 900° C. to 1200° C. in an atmosphere of a mixture of sulfur and oxygen to form island-like rare earth oxide phases on the surface of the sintered body to produce a ceramic scintillator. Therefore, the ceramic scintillator comprises a sintered body of a rare earth oxysulfide, and a rare earth oxide phase formed on the surface of the sintered body, wherein a rare earth oxysulfide phase or the rare earth oxide phase is dispersed on the surface of the sintered body, so that the optical output characteristic of the ceramic scintillator is improved. According to this ceramic scintillator, it is possible to remove the pressure and distortion during sintering, the coloring caused by the deviation from the stoichiometric composition, and the coloring caused during processing such as saw-cutting and polishing.

Abstract: An object of the present invention is to provide a thermal spraying robot system capable of automatically determining spraying conditions according to the shape of a workpiece. Shape data on a workpiece (9) and material data on a thermal spray material are entered by operating a data input unit (1). A spray condition database 3 stores a plurality of spray parameters for kinds of thermal spray materials and for qualities of sprayed coatings. A path calculating unit (4) selects values of spray parameters from the spray condition database (3), and then calculates a path for a thermal spraying gun (14) according to a predetermined program on the basis of the shape data on the workpiece and the selected values of the spray parameters. The path calculating unit (4) decides whether or not a thermal spraying operation can be carried out by moving the thermal spraying gun along a calculated path.

Abstract: An intensifying screen, comprising a support, a phosphor layer disposed on the support and a protecting film disposed on the phosphor layer. The phosphor layer comprises a first phosphor layer formed on the support side and constituted of particles of the first phosphor having average particle diameter D1 and range coefficient k, which expresses a particle size distribution, in the range of 1.3 to 1.8, and a second phosphor layer formed on the protective film side and constituted of particles of the second phosphor having average particle diameter D2 (>D1) and range coefficient k, which expresses a particle size distribution, in the range of 1.5 to 2.0. The ratio (CW1:CW2) of coating weight per unit area of the particles of the first phosphor in the first phosphor layer CW1 and coating weight per unit area of the particles of the second phosphor in the second phosphor layer CW2 is in the range of from 8:2 to 6:4.

Abstract: A radiation discriminative measurement is performed by using a radiation discriminative measuring apparatus which comprises a radiation source for radiating radiations, first, second and third scintillators disposed in a region which is irradiated with the radiations radiated from the radiation source, and an image pickup means to deal with the light beams emitted from the first, second and third scintillators and the discrimination measurement includes the steps of arranging the first, second and third scintillators in a region which is irradiated with the radiations radiated from the radiation source, causing the first scintillator to respond to type A, type B and type C radiations radiated from the radiation source and to emit alight beam in a first wavelength region, causing the second scintillator to respond to type B and type C radiations which pass through the first scintillator so as to to emit a light beam in a second wavelength region, and causing the third scintillator to respond to a type C radiat

Abstract: An electroluminescent phosphor comprises zinc sulfide as a phosphor base material, at least one kind selected from copper and manganese as an activator, and at least one kind selected from chlorine, bromine, iodine, and aluminum as a coactivator. The content of alkaline earth metal elements in the electroluminescent phosphor is 0.05% by weight or less. In addition, the electroluminescent phosphor includes cesium in the range of 0.0001% by weight or more and 0.01% by weight or less. Such an electroluminescent phosphor has excellent brightness and life. An electroluminescent element comprises a phosphor layer in which an electroluminescent phosphor is dispersed in a dielectric. The electroluminescent phosphor includes reduced amount of alkaline earth metal elements and a slight amount of cesium.

Abstract: An apparatus for disassembling and assembling a gas turbine combustor comprises a hand assembly for holding a combustor component of a gas turbine, an inserting and drawing section which supports the hand assembly and moves the same in parallel to a central axis of the combustor component and a retainer for securing the inserting and drawing section onto a casing which constitutes an outer section of the gas turbine.

Abstract: Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor meter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m less in an amount of 5 wt % or less.

Abstract: Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor diameter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m less in an amount of 5 wt % or less.

Abstract: Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor diameter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m or less in an amount of 5 wt % or less.

Abstract: Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor diameter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m or less in an amount of 5 wt % or less.

Abstract: A gas turbine combustor comprises a cylindrical outer casing having one end closed by a header plate. A combustor liner provided with an inner combustion chamber which is divided into a first-stage combustion region on a side of the header plate and a second-stage combustion region formed on a downstream side of the first-stage combustion region. A first-stage fuel supply unit mounted to the header plate for injecting a first-stage fuel to the first-stage combustion region and a second-stage fuel supply unit mounted to the header plate for injecting a second-stage fuel previously mixed in a lean fuel state. The first-stage fuel supply unit includes a first-stage fuel nozzle assembly, which supplies the first-stage fuel, formed by combining a diffusion combustion nozzle and a pre-mixture combustion nozzle.

Abstract: A gas turbine combustor for a gas turbine plant comprises an outer casing and a combustor liner disposed in the outer casing, the interior of the combustor liner constituting a combustor chamber divided into a first stage of combustion area and a second stage of combustion area, disposed downstream of the first stage combustion area. The gas turbine combustor further comprises a nozzle member for supplying a first stage fuel into the first stage combustion area, a header for supplying a second stage fuel into the second stage combustion area, and a header for further supplying water or water vapor into the first stage combustion area. The nozzle member and both the headers are disposed in an end plate closing one end of the outer casing in a concentrical fashion. The flow rates of the first and second stage fuels and the water vapor are controlled by a control unit equipped with the gas turbine combustor.

Abstract: Zinc silicate phosphor emitting green for cathode ray tubes with a long persistence, which does not contain arsenic.______________________________________ Formula aZnO.SiO.sub.2 :Mn.sub.x,In.sub.y ______________________________________ in which the conditions 1.5 .ltoreq. a .ltoreq. 2 5 .times. 10.sup.-5 .ltoreq. x .ltoreq. 3 .times. 10.sup.-2 1 .times. 10.sup.-5 .ltoreq. y .ltoreq. 1 .times. 10.sup.-2 ______________________________________are satisfied.

Abstract: A cathode-ray tube according to the present invention is provided with a phosphor screen comprising phosphors A, B, and C, wherein each of the phosphors A and B constitute 5 to 15% by weight and, the phosphor C constitutes 70 to 90% by weight. The phosphor A is a bluish white-emitting phosphor (Y.sub.1-x-y Gd.sub.x Tb.sub.y).sub.2 O.sub.2 S (0.ltoreq.X.ltoreq.0.999999 and 0.000001.ltoreq.Y.ltoreq.0.001), the phosphor B is at least one of a blue-emitting silver-activated hexagonal zinc sulfate (ZnS:Ag) phosphor, etc., and the phosphors C is a yellow-emitting phosphor (In.sub.1-p-r M.sub.p TB.sub.q Eu.sub.r BO.sub.3) (wherein M is at least one element selected from the group consisting of Sc, Lu, Y, Gd, and Ga, and p, q, and r satisfy 0.ltoreq.p.ltoreq.0.2, 0.0005.ltoreq.q.ltoreq.0.05, and 0.001.ltoreq.r.ltoreq.0.1). The cathode-ray tube of the present invention is a phosphor screen which is free from toxicity and has good flickering and brightness characteristics and high current dependence of brightness.

Abstract: A compound having the general formulaaReOF.(1-a)Ba.sub.(1-X) M.sub.x FX:Eu.sub.y,where Re is one element selected from the group consisting of Lu and Y, M is at least one element selected from the group consisting of Be, Mg, Ca, Sr, Zn, and Cd, X is at least one element selected from the group consisting of Cl, Br, and I, a is a positive number less than or equal to 0.6, x is in the range from 0 to 0.5, inclusive, and y is in the range from 10.sup.-6 to 2.times.10.sup.-1, inclusive, is useful as a phosphor, especially in X-ray imaging.

Abstract: A green-emitting phosphor for a cathode-ray tube contains calcium sulfide activated by cerium and lithium. Decreases in the brightness when the tube is excited with an electron beam of high current densities or is subjected to high temperatures are eliminated.

Abstract: There are disclosed a composition for making a picture tube fluorescent screen characterized by essentially consisting of a light-sensitive resin at least having recurring units (1) and (2) represented by the formulas: ##STR1## wherein R and X.sup.- have the same meanings as defined in the specification, and CaS-based phosphor particles surface-coated with SiO.sub.2 which are dispersed in an aqueous medium, and a method of making a picture tube fluorescent screen using the same.According to this invention, it is possible to make a picture tube exhibiting an excellent light emitting efficiency and a contrast by a simple process.

Abstract: Disclosed is a filter-coated phosphor having phosphor particles coated with filter particles formed of pigments of the same color as that of light emitted from the phosphor, the phosphor particles coated with the filter particles being additionally coated with a borate compound. According to this filter-coated phosphor, the filter particles never exfoliate from the surfaces of the phosphor particles in a slurry, satisfactory dispersibility is obtained in the slurry, and the slurry pH is stable. A phosphor screen of a color picture tube obtained with use of the filter-coated phosphor exhibits highly outstanding contrast and luminous efficiency.

Abstract: A gadolinium-activated phosphate phosphor expressed by the general chemical formula:(R.sub.1-x-y Gd.sub.x M.sub.y).sub.3 (PO.sub.4).sub.(2+x-y)zwhere R denotes calcium, zinc, strontium, barium, or magnesium; M represents thallium, silver, lithium, barium, sodium, potassium, rubidium or cesium; 0.005.ltoreq.x.ltoreq.0.35; 0.ltoreq.y.ltoreq.0.3; and 0.7.ltoreq.z.ltoreq.1.9.