Abstract: A method for evaluating a quartz glass crucible constituted by an outer layer formed of an opaque quartz glass containing a bubble, and an inner layer formed of a transparent quartz glass. The method includes steps of preparing a quartz glass crucible to be evaluated, irradiating the quartz glass crucible to be evaluated with ultraviolet rays as an excitation light, detecting a blue fluorescence emitted from the quartz glass crucible irradiated with the ultraviolet rays, and evaluating a state of oxygen deficiency defects in the outer layer of the quartz glass crucible on the basis of existence or non-existence of the blue fluorescence. The method allows hydrogen doping and water vapor introduction to attain nondestructive and easy evaluation on the state of the oxygen deficiency defects generated in the quartz glass crucible.

Abstract: A quartz glass crucible including a bottom portion, a curved portion, and a straight body portion, where the quartz glass crucible includes an outer layer including opaque quartz glass containing bubbles therein, and an inner layer including transparent quartz glass, the outer layer includes a plurality of layers in a part of the straight body portion, out of the plurality of layers, one layer having a devitrification spot number of 50/cm3 or more and 70/cm3 or less when the quartz glass crucible is heated at 1600° C. for 24 hours, and a layer positioned inwards of the devitrifiable layer in a thickness direction of the quartz glass crucible is a low devitrification layer having a spot number of 2/cm3 or less when the quartz glass crucible is heated at 1600° C. for 24 hours. This provides a quartz glass crucible suppressed from deformation due to heating and excessive progression of devitrification.

Abstract: A quartz glass crucible including bottom, curved, and straight body portions, where the quartz glass crucible includes an outer layer including opaque quartz glass containing bubbles, and an inner layer including transparent quartz glass, the outer layer fabricated from different types of raw material powder, the outer layer having regions sectioned by bubble content densities, and bubble content densities of two outer layer adjacent regions, when da (pcs/mm3) is defined as content density of a region “a” having a greater content density, and db (pcs/mm3) is defined as content density of a region “b” having a smaller content density, a difference D=(da?db)/db between content densities of the two regions is 10% or more.

Abstract: A quartz glass crucible including a bottom portion, a curved portion, and a straight body portion, where the quartz glass crucible includes an outer layer including opaque quartz glass containing bubbles therein, and an inner layer including transparent quartz glass, the outer layer includes a plurality of layers in a part of the straight body portion, out of the plurality of layers, one layer having a devitrification spot number of 50/cm3 or more and 70/cm3 or less when the quartz glass crucible is heated at 1600° C. for 24 hours, and a layer positioned inwards of the devitrifiable layer in a thickness direction of the quartz glass crucible is a low devitrification layer having a spot number of 2/cm3 or less when the quartz glass crucible is heated at 1600° C. for 24 hours. This provides a quartz glass crucible suppressed from deformation due to heating and excessive progression of devitrification.

Abstract: A quartz glass crucible including bottom, curved, and straight body portions, where the quartz glass crucible includes an outer layer including opaque quartz glass containing bubbles, and an inner layer including transparent quartz glass, the outer layer fabricated from different types of raw material powder, the outer layer having regions sectioned by bubble content densities, and bubble content densities of two outer layer adjacent regions, when da (pcs/mm3) is defined as content density of a region “a” having a greater content density, and db (pcs/mm3) is defined as content density of a region “b” having a smaller content density, a difference D=(da?db)/db between content densities of the two regions is 10% or more.

Abstract: A computer-readable non-transitory recording medium having stored therein a pull-up and pull-down resistor verification program that causes a computer to execute a procedure, the procedure includes reading first definition information to define that a first resistor of a first circuit is a pull-up resistor or a pull-down resistor and second definition information to define that a second resistor of a second circuit is a pull-up resistor or a pull-down resistor, comparing the first definition information and the second definition information, and generating an error message in a case where one of the first resistor and the second resistor is the pull-up resistor and the other one is the pull-down resistor.

Abstract: The present invention is a method for producing a quartz glass crucible for pulling a single crystal silicon from a silicon melt held therein, including the steps of: producing a quartz glass crucible having an outer layer including an opaque quartz glass containing bubbles therein and an inner layer including a transparent quartz glass containing substantially no bubbles; roughening a region of an inner surface of the produced quartz glass crucible, the region being in contact with the silicon melt when holding the silicon melt; and heating the quartz glass crucible having the roughened inner surface to crystallize a surface of the roughened region. This can produce a quartz glass crucible for pulling a single crystal silicon which can suppress generation of a brown ring on the inner surface of the crucible during pulling the single crystal silicon and can suppress crystallinity disorder of the single crystal silicon.

Abstract: The invention provides a method for producing barium titanate powder comprising the steps of: adding an aqueous slurry of anatase hydrous titanium oxide having a BET specific surface area in the range of 200 m2/g to 400 m2/g and a half width of diffraction peak of (101) plane in the range of 2.3° to 5.0° as measured by X-ray diffraction to an aqueous solution of barium hydroxide while maintaining the aqueous solution of barium hydroxide at a temperature in the range from 80° C. to the boiling point thereof under normal pressure to cause a reaction of the barium hydroxide with the hydrous titanium oxide to provide an aqueous slurry of barium titanate precursor; and subjecting the barium titanate precursor thus obtained to hydrothermal treatment over a period of not less than 24 hours to provide barium titanate particles.

Abstract: The invention provides a method for producing barium titanate powder comprising the steps of: adding an aqueous slurry of anatase hydrous titanium oxide having a BET specific surface area in the range of 200 to 400 m2/g and a half width of diffraction peak of (101) plane in the range of 2.3° to 5.0° as measured by X-ray diffraction to an aqueous solution of barium hydroxide while maintaining the aqueous solution of barium hydroxide at a temperature in the range from 80° C. to the boiling point thereof under normal pressure to cause a reaction of the barium hydroxide with the hydrous titanium oxide to provide an aqueous slurry of barium titanate precursor; and subjecting the barium titanate precursor thus obtained to hydrothermal treatment over a period of time shorter than 24 hours to provide barium titanate particles.

Abstract: The present invention is a method for producing a quartz glass crucible for pulling a single crystal silicon from a silicon melt held therein, including the steps of: producing a quartz glass crucible having an outer layer including an opaque quartz glass containing bubbles therein and an inner layer including a transparent quartz glass containing substantially no bubbles; roughening a region of an inner surface of the produced quartz glass crucible, the region being in contact with the silicon melt when holding the silicon melt; and heating the quartz glass crucible having the roughened inner surface to crystallize a surface of the roughened region. This can produce a quartz glass crucible for pulling a single crystal silicon which can suppress generation of a brown ring on the inner surface of the crucible during pulling the single crystal silicon and can suppress crystallinity disorder of the single crystal silicon.

Abstract: The invention provides a method for producing barium titanate powder comprising the steps of: adding an aqueous slurry of anatase hydrous titanium oxide having a BET specific surface area in the range of 200 m2/g to 400 m2/g and a half width of diffraction peak of (101) plane in the range of 2.3° to 5.0° as measured by X-ray diffraction to an aqueous solution of barium hydroxide while maintaining the aqueous solution of barium hydroxide at a temperature in the range from 80° C. to the boiling point thereof under normal pressure to cause a reaction of the barium hydroxide with the hydrous titanium oxide to provide an aqueous slurry of barium titanate precursor; and subjecting the barium titanate precursor thus obtained to hydrothermal treatment over a period of not less than 24 hours to provide barium titanate particles.

Abstract: The invention provides a method for producing barium titanate powder comprising the steps of: adding an aqueous slurry of anatase hydrous titanium oxide having a BET specific surface area in the range of 200 to 400 m2/g and a half width of diffraction peak of (101) plane in the range of 2.3° to 5.0° as measured by X-ray diffraction to an aqueous solution of barium hydroxide while maintaining the aqueous solution of barium hydroxide at a temperature in the range from 80° C. to the boiling point thereof under normal pressure to cause a reaction of the barium hydroxide with the hydrous titanium oxide to provide an aqueous slurry of barium titanate precursor; and subjecting the barium titanate precursor thus obtained to hydrothermal treatment over a period of time shorter than 24 hours to provide barium titanate particles.

Abstract: An article transport facility includes a traveling rail hung from a ceiling portion and configured for guiding an article transport carriage, an article loading unit disposed laterally and downwardly of the traveling rail and configured for loading and supporting an article to be transferred to/from the article transport carriage, and a supporting mechanism for supporting the article loading unit hung from the ceiling portion in such a manner that the article loading unit is rendered position-adjustable between a transferring position for transferring the article to/from the article transport carriage and a retracted position retracted upwards from the transferring position. The supporting mechanism is capable of causing the article loading unit loading an article thereon to be position-changeable between the transferring position and the retracted position.

Abstract: A computation unit locates data of a first component in a first circuit, as well as data of a second component in the second circuit. The computation unit then obtains data of a first portion of the first circuit by tracing wiring lines from component to component in the first circuit, with the first component as the start point. Similarly the computation unit obtains data of a second portion of the second circuit by tracing wiring lines from component to component in the second circuit, with the second component as the start point. The computation unit outputs data indicating differences between the first portion and second portion, based on the obtained data of the first portion and the obtained data of the second portion.

Abstract: A ceiling transport carriage transfers an article at a first supporting position and receives the article from second supporting position in an article transfer section, in association with hoisting operations of a support unit. A ground transport device transports the article between the above two positions and a processing position where an article processing device effects a processing or operation on the article. The respective positions above are set in tandem in the article transfer section along a tandem direction along which the article processing device and the article transfer section are disposed in tandem. The ceiling transport carriage includes a movement operating mechanism for operating and moving a support unit along the tandem direction, to a position immediately above the first supporting position and to a position immediately above second supporting position.

Abstract: An object of the invention is to provide a cleaning device for a ceiling transport facility in which a plurality of locations to be cleaned can be cleaned appropriately while avoiding having insufficient suction power for the plurality of cleaning suction portions. A travelling guide portion for a transport carriage is provided on the ceiling side. The cleaning carriage that can travel along the travelling guide portion is provided with a plurality of cleaning suction portions for performing suctioning action on a plurality of locations to be cleaned in the travelling guide portion and a vacuum cleaner which is in communication with the plurality of cleaning suction portions. The plurality of cleaning suction portions are divided to a plurality of functioning units. And an interrupting device is provided for selectively permitting and preventing the communication of each of the plurality of the functioning units with the vacuum cleaner.

Abstract: A computation unit locates data of a first component in a first circuit, as well as data of a second component in the second circuit. The computation unit then obtains data of a first portion of the first circuit by tracing wiring lines from component to component in the first circuit, with the first component as the start point. Similarly the computation unit obtains data of a second portion of the second circuit by tracing wiring lines from component to component in the second circuit, with the second component as the start point. The computation unit outputs data indicating differences between the first portion and second portion, based on the obtained data of the first portion and the obtained data of the second portion.

Abstract: The disclosed method includes: identifying a first reference component from among first components defined in a first constraint condition that is a reference designated from among constraint conditions regarding a position relationship between plural components on a printed circuit board; identifying a second reference component from among second components defined in a second constraint condition that is to be compared with the first constraint condition and included in the constraint conditions; and identifying a fourth component that is a component other than the second reference component among the second components and has a correspondence with a third component, based on position relationships with the third component and an attribute of the third component, wherein the third component is a component other than the first reference component among the first components.

Abstract: An article transport facility includes a traveling rail hung from a ceiling portion and configured for guiding an article transport carriage, an article loading unit disposed laterally and downwardly of the traveling rail and configured for loading and supporting an article to be transferred to/from the article transport carriage, and a supporting mechanism for supporting the article loading unit hung from the ceiling portion in such a manner that the article loading unit is rendered position-adjustable between a transferring position for transferring the article to/from the article transport carriage and a retracted position retracted upwards from the transferring position. The supporting mechanism is capable of causing the article loading unit loading an article thereon to be position-changeable between the transferring position and the retracted position.

Abstract: An object of the invention is to provide a cleaning device for a ceiling transport facility in which a plurality of locations to be cleaned can be cleaned appropriately while avoiding having insufficient suction power for the plurality of cleaning suction portions. A travelling guide portion for a transport carriage is provided on the ceiling side. The cleaning carriage that can travel along the travelling guide portion is provided with a plurality of cleaning suction portions for performing suctioning action on a plurality of locations to be cleaned in the travelling guide portion and a vacuum cleaner which is in communication with the plurality of cleaning suction portions. The plurality of cleaning suction portions are divided to a plurality of functioning units. And an interrupting device is provided for selectively permitting and preventing the communication of each of the plurality of the functioning units with the vacuum cleaner.