Abstract: An object is to provide a graphite sheet having excellent peelability from a slightly adhesive film. The object is attained by a method for producing a graphite sheet having a thermal diffusivity of not less than 8.0 cm2/s and an interlaminar strength of not less than 100 gf/inch, the method including the step of heat-treating a polyimide film to a temperature of not lower than 2,400° C., the polyimide film containing: not less than 0.05% by weight and not more than 0.30% by weight of inorganic particles; and a non-metal additive containing not less than 0.055% by weight and not more than 0.097% by weight of phosphorus.

Abstract: An object is to provide, with high productivity, a graphite sheet having good thermal diffusivity and interlaminar strength. The object is attained by a method for producing a graphite sheet having a thermal diffusivity of not less than 10.0 cm2/s, the method including the step of heat-treating a polyimide film to a temperature of not lower than 2,800° C., the polyimide film containing: not less than 0.01% by weight and not more than 0.08% by weight of inorganic particles; and a non-metal additive containing not less than 0.018% by weight and not more than 0.032% by weight of phosphorus.

Abstract: A complex has a structure of formula (1A): SnXn·(m)L, wherein X is at least one type of halogen atoms, L is a polar solvent molecule, n is a value from 1.5 to 2.5, and m is a value from 0.3 to 1.9. A perovskite compound has a structure of formula (2A): RSnXj, wherein Sn has an oxidation number from 1.5 to 2.5, R is at least one type of a monovalent cation, X is at least one type of halogen atoms, and j is a value from 2.5 to 3.5, and the perovskite compound is free of tin oxide; or a perovskite compound has a structure of formula (2B): R2M2BiX1, wherein R is at least one type of a monovalent cation, X is at least one type of halogen atoms; M2 is a monovalent metal, and i is a value from 5.0 to 7.0.

Abstract: Problem: To provide a production method for a perovskite layer using a tin-based perovskite compound having excellent flatness and a production method for a perovskite-type solar cell using the perovskite layer obtained by the above-described production method for the perovskite layer. Solution: A method for producing a perovskite layer that includes a step of applying a solution containing an Sn-based perovskite compound to a substrate, a step of applying a poor solvent to the substrate, and a step of performing an annealing process to the substrate, in this order, wherein the poor solvent is at 45° C. to 100° C.

Abstract: A complex has a structure of formula (1A): SnXn·(m)L, wherein X is at least one type of halogen atoms, L is a polar solvent molecule, n is a value from 1.5 to 2.5, and m is a value from 0.3 to 1.9. A perovskite compound has a structure of formula (2A): RSnXj, wherein Sn has an oxidation number from 1.5 to 2.5, R is at least one type of a monovalent cation, X is at least one type of halogen atoms, and j is a value from 2.5 to 3.5, and the perovskite compound is free of tin oxide; or a perovskite compound has a structure of formula (2B): R2M2BiX1, wherein R is at least one type of a monovalent cation, X is at least one type of halogen atoms; M2 is a monovalent metal, and i is a value from 5.0 to 7.0.

Abstract: In a bearing device 1 which is assembled to a pinion 3 of a rack-and-pinion type drive mechanism 2, the bearing device 1 has a plurality of needle rollers 13. A plurality of pin rollers 9 are supported by an inner surface cylindrically formed by the plurality of needle rollers 13. Each of the plurality of needle rollers 13 is held at both ends 13a, 13b in an axial direction R by a retainer cage 14, so as to prevent the needle rollers 13 from being skewed against the axial direction R.

Abstract: In a bearing device 1, a plurality of columnar needle rollers 13 are provided. A cage 14 is provided in which the needle rollers 13 are arranged in parallel with each other along an axial direction R of a pin roller 9, so that the needle rollers 13 form a cylindrical configuration around the pin roller 9. The cage 14 has oppositely placed two rings 17 and a plurality of bridge pieces 18 bridged between the two rings 17, and having the bridge pieces 18 to rotatably accommodate the needle rollers 13 in order to achieve higher performances.

Abstract: In a bearing device 1 which is assembled to a pinion 3 of a rack-and-pinion type drive mechanism 2, the bearing device 1 has a plurality of needle rollers 13. A plurality of pin rollers 9 are supported by an inner surface cylindrically formed by the plurality of needle rollers 13. Each of the plurality of needle rollers 13 is held at both ends 13a, 13b in an axial direction R by a retainer cage 14, so as to prevent the needle rollers 13 from being skewed against the axial direction R.

Abstract: The present invention has as its object the provision of a restoration method for a deteriorated part, which is capable of easily and reliably repairing and restoring a deteriorated part generated in a metal member to reliably prolong the lifetime of the metal member. Specifically, a local heating step of locally heating a deteriorated part C by a main heater 25 and pressure-welding the deteriorated part C by a compression force by thermal expansion and a peripheral heating step of heating the periphery and vicinity of a heated region HA1 in the local heating step by a sub heater 26 are carried out, followed by carrying out a cooling step of cooling the heated region HA1 by the main heater 25 and a heated region HA2 by the sub heater 26 at the same time.

Abstract: The watch design creating system according to the present invention utilizes, for example, the internet as an information communication network. For example, a consumer (1) in subscribers (1 to N) which are customers, requests design information to a host computer (H) of the watch maker which is a watch supplier, through the internet, the watch maker provides, for example, a CD-ROM stored design software and data used for original design to the consumer. The consumer creates the original design watch in accordance with steps stored in the CD-ROM, records it into a FD (floppy disk) and sends it to the watch maker. The watch maker produces the original watch and delivers the completed watch to the consumer (FIG. 1).

Abstract: A lifetime evaluating system includes a digitalizing unit, an acquiring unit and a determining unit. The digitalizing unit digitizes an original metallographic image of a mechanical element to form a digital image. The acquiring unit acquires a plurality of labels from the digital image. Here, each of the plurality of labels is a set of pixels with a predetermined property. The determining unit classifies the plurality of labels into a class of voids and a class of non-voids based on evaluation data. A lifetime of the mechanical element is determined based on a number of labels in the void class and a size of each of the labels in the void class.

Abstract: The watch design creating system according to the present invention utilizes, for example, the internet as an information communication network. For example, a consumer (1) in subscribers (1 to N) which are customers, requests design information to a host computer (H) of the watch maker which is a watch supplier, through the internet, the watch maker provides, for example, a CD-ROM stored design software and data used for original design to the consumer. The consumer creates the original design watch in accordance with steps stored in the CD-ROM, records it into a FD (floppy disk) and sends it to the watch maker. The watch maker produces the original watch and delivers the completed watch to the consumer (FIG. 1).

Abstract: A heat resistant steel can be produced at a low cost and has an excellent high temperature strength. A high-strength heat-resistant steel is provided which comprises carbon in an amount of 0.06 to 0.15% by weight, silicon in an amount of 1.5% by weight or less, manganese in an amount of 1.5% by weight or less, vanadium in an amount of 0.05 to 0.3% by weight, chromium in an amount of 0.8% by weight or less, molybdenum in an amount of 0.8% by weight or less, at least one selected from niobium, titanium, tantalum, hafnium, and zirconium in an amount of 0.01 to 0.2% by weight, nitrogen in an amount of 20 to 200 ppm, and the balance being iron and unavoidable impurities, and the high-strength heat-resistant steel comprising a bainite structure.

Abstract: A heat resistant steel can be produced at a low cost and has an excellent high temperature strength. A high-strength heat-resistant steel is provided which comprises carbon in an amount of 0.06 to 0.15% by weight, silicon in an amount of 1.5% by weight or less, manganese in an amount of 1.5% by weight or less, vanadium in an amount of 0.05 to 0.3% by weight, chromium in an amount of 0.8% by weight or less, molybdenum in an amount of 0.8% by weight or less, at least one selected from niobium, titanium, tantalum, hafnium, and zirconium in an amount of 0.01 to 0.2% by weight, nitrogen in an amount of 20 to 200 ppm, and the balance being iron and unavoidable impurities, and the high-strength heat-resistant steel comprising a bainite structure.

Abstract: An object is to provide a heat-resistant steel which can be produced at a low cost but possesses an excellent high-temperature strength. A high-strength heat-resistant steel is provided which comprises C in an amount of 0.06 to 0.15% by weight, Si in an amount of 1.5% by weight or less, Mn in an amount of 0.5 to 1.5% by weight, V in an amount of 0.05 to 0.3% by weight, and at least one of Nb, Ti, Ta, Hf, and Zr, in an amount of 0.01 to 0.1% by weight, the balance being Fe and unavoidable impurities, wherein the high-strength heat-resistant steel has a structure consisting mainly of a bainite structure.

Abstract: A lifetime evaluating system includes a digitalizing unit, an acquiring unit and a determining unit. The digitalizing unit digitizes an original metallographic image of a mechanical element to form a digital image. The acquiring unit acquires a plurality of labels from the digital image. Here, each of the plurality of labels is a set of pixels with a predetermined property. The determining unit classifies the plurality of labels into a class of voids and a class of non-voids based on evaluation data. A lifetime of the mechanical element is determined based on a number of labels in the void class and a size of each of the labels in the void class.

Abstract: An object is to provide a heat-resistant steel which can be produced at a low cost but possesses an excellent high-temperature strength. A high-strength heat-resistant steel is provided which comprises C in an amount of 0.06 to 0.15% by weight, Si in an amount of 1.5% by weight or less, Mn in an amount of 0.5 to 1.5% by weight, V in an amount of 0.05 to 0.3% by weight, and at least one of Nb, Ti, Ta, Hf, and Zr, in an amount of 0.01 to 0.1% by weight, the balance being Fe and unavoidable impurities, wherein the high-strength heat-resistant steel has a structure consisting mainly of a bainite structure.

Abstract: An object is to provide a heat-resistant steel which can be produced at a low cost but possesses an excellent high-temperature strength. A high-strength heat-resistant steel is provided which comprises C in an amount of 0.06 to 0.15% by weight, Si in an amount of 1.5% by weight or less, Mn in an amount of 0.5 to 1.5% by weight, V in an amount of 0.05 to 0.3% by weight, and at least one of Nb, Ti, Ta, Hf, and Zr, in an amount of 0.01 to 0.1% by weight, the balance being Fe and unavoidable impurities, wherein the high-strength heat-resistant steel has a structure consisting mainly of a bainite structure.

Abstract: A circuit breaker includes an insulative case and three first current transformers for detecting load currents. Each first current transformer has a U-shaped core with a gap and is disposed so that a movable contact arm is positioned in the gap. Three second current transformers for control power source are disposed between main contacts for opening and closing power feed path to loads and power-supply side terminals. An output of each second current transformer is supplied to a power source circuit of a control circuit. A zero-phase-sequence transformer for detection of an earth fault current is disposed between the movable contact arms and load side terminals in the case. A control circuit generates an overcurrent trip signal based on an detection output of each first current transformer and an earth leakage trip signal based on an detection output of the zero-phase-sequence current transformer.

Abstract: A circuit breaker includes a current detector for generator analog voltage signals in accordance with load current of respective phases and a control circuit for executing a tripping operation in response to the analog voltage signals. The control circuit includes an analog switch repeating a time division selecting operation that one of the analog phase voltage signals generated by the current detector is selectively allowed to pass through the same in a predetermined order, an analog-to-digital (A/D) converter for converting the analog voltage signal having passed through the analog switch to a corresponding digital signal, and a microcomputer receiving the digital voltage signal from the A/D converter and obtaining the effective load current value based on the digital voltage signals. The microcomputer generates a tripping order when the effective load current value exceeds a predetermined value.