Abstract: The present invention provides a fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness when welded by large heat input and exposed to fire and a method of production of the same, that is, a material containing C: 0.012 to 0.050%, Mn: 0.80 to 2.00%, Cr: 0.80 to 1.90%, and Nb: 0.01 to less than 0.05%, restricting Cu to 0.10% or less, containing suitable quantities of Si, N, Ti, and Al, restricting the contents of Mo, B, P, S, and O, and having a balance of Fe and unavoidable impurities, having contents of C, Mn, Cr, Nb, and Cu satisfying ?1200C?20Mn+30Cr?330Nb?120Cu??80, having a steel structure as observed by an optical microscope of an area fraction of 80% or more of a ferrite phase, and having a balance of the steel structure of a bainite phase, martensite phase, and mixed martensite-austenite structure.

Abstract: The present invention provides a high strength thick steel plate for marine structures superior in weldability and low temperature toughness of the HAZ, which is able to be produced at a low cost without use of a complicated method of production, and a method of production of the same, that is, steel for welded structures excellent in low temperature toughness of the weld heat affected zone and a method of production of the same characterized by casting molten steel containing, by mass %, C: 0.03 to 0.12%, Si: 0.05 to 0.30%, Mn: 1.2 to 3.0%, P: 0.015% or less, S: 0.001 to 0.015%, Cu+Ni: 0.10% or less, Al: 0.001 to 0.050%, Ti: 0.005 to 0.030%, Nb: 0.005 to 0.10%, and N: 0.0025 to 0.0060% by the continuous casting method, making the cooling rate from near the solidification point to 800° C. in the secondary cooling at that time 0.06 to 0.6° C./s, hot rolling the obtained slab, and cooling it from a temperature of 800° C. or more.

Abstract: A catalyst for catalytic partial oxidation of hydrocarbon, having high thermal shock resistance, and a process for producing a synthesis gas using the catalyst are provided. A catalyst for catalytic partial oxidation of hydrocarbon is used in producing a synthesis gas containing carbon monoxide and hydrogen by adding oxygen and steam to a raw material hydrocarbon, thereby subjecting the raw material hydrocarbon to catalytic partial oxidation, and comprises a carrier comprising an inorganic oxide and an active metal supported thereon. In the catalyst, the total of volume of pores having a pore diameter in a first range of from 0.1 ?m to less than 1.0 ?m is 32% or more of the whole pore volume, and the total of volume of pores having a pore diameter in a second range of from 1.0 ?m to 10 ?m or less is 14% or more of the whole pore volume.

Abstract: A method of production of 780 MPa class high strength steel plate excellent low temperature toughness comprising heating a steel slab of containing, by mass %, C: 0.06 to 0.15%, Si: 0.05 to 0.35%, Mn: 0.60 to 2.00%, P: 0.015% or less, S: 0.015% or less, Cu: 0.1 to 0.5%, Ni: 0.1 to 1.5%, Cr: 0.05 to 0.8%, Mo: 0.05 to 0.6%, Nb: less than 0.005%, V: 0.005 to 0.060%, Ti: less than 0.003%, Al: 0.02 to 0.10%, B: 0.0005 to 0.003%, and N: 0.002 to 0.006% to 1050° C. to 1200° C. in temperature, hot rolling ending at 870° C. or more, waiting for 10 seconds to 90 seconds, then cooling from 840° C. or more in temperature by a 5° C./s or more cooling rate to 200° C., then tempering at 450° C. to 650° C. in temperature for 20 minutes to 60 minutes.

Abstract: There is provided a method for producing a raw gas for ammonia synthesis in which light hydrocarbons from a tube 3, steam from a tube 6 and oxygen-enriched air having an oxygen concentration of 40 to 60% by volume from an oxygen-enriched air supply source 7 are heated and are then introduced to a one-step reforming reactor 5 to thereby carry out a steam reforming reaction and an air partial oxidation reaction at the same time, and the resultant is subsequently passed through a shift reactor 12, a decarbonating device 14 and a methanation reactor 16 to remove carbon monoxide and carbon dioxide, thereby yielding a raw gas suitable for ammonia synthesis having a hydrogen to nitrogen molar ratio of about 3:1.

Abstract: The present invention is a spray mold remover, prepared by filling a bleaching composition in a container having a spraying means, the bleaching composition containing (a) an alkali metal hypochlorite, (b) a cationic surfactant and (c) a compound represented by the formula (1): X1—O(AO)n—X2??(1) wherein, AO represents an alkyleneoxy group having 2 to 4 carbon atoms; n represents an average addition mole number of the alkyleneoxy group ranging from 5 to 150; X1 and X2 each represent a hydrogen atom, —SO3M, —CH2COOM (M represents an alkali metal atom), or an alkyl group having 1 to 6 carbon atoms, with the proviso that X1 and X2 do not represent hydrogen atoms or alkyl groups at the same time.

Abstract: The present invention provides high temperature strength and fire-resistant steel superior in weld joint reheat embrittlement resistance and toughness which is produced using steel of a room temperature strength of the 400 to 600N/mm2 class containing as main ingredients C: 0.010% to less than 0.05%, Si: 0.01 to 0.50%, Mn: 0.80 to 2.00%, Cr: 0.50% to less than 2.00%, V: 0.03 to 0.30%, Nb: 0.01 to 0.10%, N: 0.001 to 0.010%, and Al: 0.005 to 0.10%, limiting the contents of Ni, Cu, Mo, and B, and satisfying the relationship of 4Cr[%]-5Mo[%]-10Ni[%]-2Cu[%]-Mn[%]>0.

Abstract: To provide a gas mixing device capable of safely mixing flammable gas containing, for example, methane or the like and combustion supporting gas such as oxygen-containing gas, and a synthesis gas producing device using this gas mixing device. Flammable gas containing methane or the like and combustion supporting gas such as oxygen-containing gas are supplied into a mixing vessel 20 via a first gas supplying section 22a and a second gas supplying section 22b respectively, and these gases are mixed within a combustion range in the vessel 20 to be discharged via a discharge section 24. In the mixing vessel 20, packings 31 to 33 for forming a large number of narrow gas flow passages in the vessel 20 are packed so that velocity of the mixed gas flowing in the vessel 20 becomes higher than burning velocity of the flammable gas and the combustion supporting gas.

Abstract: The invention relates to a sample containing a gastric mucosa lavage fluid collected from a subject who has received a gastric mucus removal treatment and a method for detecting a disease-related marker using the same. By using the sample of the invention, the disease-related marker can be detected conveniently, less invasively, highly sensitively and highly accurately.

Abstract: The present invention provides high strength steel having unprecedentedly superior CTOD (fracture toughness) properties satisfying not only the CTOD properties of the FL zone at ?60° C., but also the CTOD properties of the ICHAZ zone in small and medium heat input multilayer welding etc. and a method of production of the same. The steel of the present invention is steel superior in CTOD properties of the heat-affected zone containing, by mass %, C: 0.015 to 0.045%, Si: 0.05 to 0.2%, Mn: 1.5 to 2.0%, Cu: 0.25 to 0.5%, Ni: 0.7 to 1.5%, P: 0.008% or less, S: 0.005% or less, Al: 0.004% or less, Ti: 0.005 to 0.015%, Nb: 0.005% or less, 0: 0.0015 to 0.0035%, and N: 0.002 to 0.006%, PCTOD: 0.065 or less, CeqH: 0.235 or less and the balance consisting of Fe and unavoidable impurities.

Abstract: Accordingly to an exemplary embodiment of the present invention, a high tensile strength, refractory steel can be provided which comprises, in mass %, approximately C: 0.04 to 0.14%, Si: 0.50% or less, Mn: 0.50 to 2.00%, P: 0.020% or less, S: 0.010% or less, Nb: 0.01 to 0.05%, Mo: 0.30% or more and less than 0.70%, Al: 0.060% or less, N: 0.0010 to 0.0060%, and the balance consisting of iron and unavoidable impurities. For example, a weld crack sensitive composition PCM can be defined by the following equation may be about 0.25% or less: PCM=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B. An area fraction of polygonal ferrite or pseudo polygonal ferrite in a ¼ thick position in the plate thickness direction of the steel plate of the final rolling product is about 10% or less.

Abstract: Electrode layers 22A-22C, 24A-24C are formed on both main surfaces of each of piezoelectric layers 20A, 20B. Voltages of different polarities are respectively applied to the electrode layers next to each other on the same main surface and to the electrode layers opposing to each other via the piezoelectric layer. Projection forms 30, 32 are formed in respective edges of the second electrode layers 22B, 24B, each of which extends into the opposite area. Through-holes are formed in the piezoelectric layer 20A, 20B, in positions off a division line 38. The electrode layers 22A-22C are connected together by the through-holes 26A, 26B and the projection form 30, to have an equal potential. Those are lead from the diaphragm to the outside, thus reducing the overall thickness.

Abstract: A piezoelectric electroacoustic transducer capable of uniformly adhering the periphery of a piezoelectric diaphragm to an annular holding part of the holding body over the whole circumference is provided. The piezoelectric electroacoustic transducer includes a pair of piezoelectric elements having external electrodes on one main surface, a piezoelectric diaphragm provided between the piezoelectric elements and adhered to both main surfaces of an insulation substrate and a holding body having an annular holding part along the periphery of the edge of the piezoelectric diaphragm. The diaphragm is provided with a aperture conductor in an inner area enclosed by the annular holding part to interconnect the connection electrodes on both main surfaces of the diaphragm. A pair of extracted parts respectively connected to the connection electrodes is formed on the periphery of the edge of the other main surface.

Abstract: A method for producing a synthesis gas containing carbon monoxide and hydrogen from a source gas containing light hydrocarbons, includes the steps of: performing low temperature steam reforming by adding steam to the source gas and converting hydrocarbons of carbon numbers of 2 or higher in the source gas to methane; and performing a catalytic partial oxidation by adding oxygen after the low temperature steam reforming.

Abstract: After a DC erasing is performed in a direction by permanent magnets on a servo signal recording part, servo signals are recorded in the signal recording area of the servo signal recording part by a magnetic field in the direction opposite to that of the DC erasing. Thus, in a recording method for a magnetic recording medium having a data signal recording part and the servo signal recording part on a magnetic layer, accurate servo signals can be recorded and reproduced even on the medium having the magnetic layer of 0.13 ?m or smaller.

Abstract: The present invention provides a high strength thick steel plate for marine structures superior in weldability and low temperature toughness of the HAZ, which is able to be produced at a low cost without use of a complicated method of production, and a method of production of the same, that is, steel for welded structures excellent in low temperature toughness of the weld heat affected zone and a method of production of the same characterized by casting molten steel containing, by mass%, C: 0.03 to 0.12%, Si: 0.05 to 0.30%, Mn: 1.2 to 3.0%, P: 0.015% or less, S: 0.001 to 0.015%, Cu+Ni: 0.10% or less, Al: 0.001 to 0.050%, Ti: 0.005 to 0.030%, Nb: 0.005 to 0.10%, and N: 0.0025 to 0.0060% by the continuous casting method, making the cooling rate from near the solidification point to 800° C. in the secondary cooling at that time 0.06 to 0.6° C./s, hot rolling the obtained slab, and cooling it from a temperature of 800° C. or more.

Abstract: A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.

Abstract: After a DC erasing is performed in a direction by permanent magnets on a servo signal recording part, servo signals are recorded in the signal recording area of the servo signal recording part by a magnetic field in the direction opposite to that of the DC erasing. Thus, in a recording method for a magnetic recording medium having a data signal recording part and the servo signal recording part on a magnetic layer, accurate servo signals can be recorded and reproduced even on the medium having the magnetic layer of 0.13 ?m or smaller.

Abstract: After a DC erasing is performed in a direction by permanent magnets on a servo signal recording part, servo signals are recorded in the signal recording area of the servo signal recording part by a magnetic field in the direction opposite to that of the DC erasing. Thus, in a recording method for a magnetic recording medium having a data signal recording part and the servo signal recording part on a magnetic layer, accurate servo signals can be recorded and reproduced even on the medium having the magnetic layer of 0.13 ?m or smaller.

Abstract: A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.