Abstract:
A connection control system for a mobile communication network comprising means for (a) classifying services of base stations according to service levels and (b) for storing, in each of the base stations, identification information corresponding to one or a plurality of providable service levels in a memory part, and (c) for comparing a service level requested by a mobile station with the one or plurality of providable service levels based on the identification information stored in the memory part. Then selecting, in each base station, a service to be provided on the basis of the comparison described in step (c), so that services of service levels independently established for every area can be provided to the mobile stations each registered in a respective one of the base stations.
Abstract:
A method of manufacturing screws which can form screws each having a desired hollow axial bore easily and having excellent machinability is provided. The method comprises the steps of (A) producing a green body containing metal powder by means of extrusion molding; (B) debinding the green body to obtain a brown body; and (C) sintering the brown body to obtain a sintered compact, wherein at least one machine working including a thread cutting process is carried out at anytime after the completion of the step (A). The step (C) of this method may include a pre-sintering step for obtaining a pre-sintered compact and a secondary sintering process, and the machining process including a thread cutting process is carried out onto the pre-sintered compact after the completion of the pre-sintering step.
Abstract:
A buccal tube has a base part and at least one tube, and it is formed from a metal material comprising Ti or Ti alloy, using a metal injection molding method. The buccal tube can be formed from a metal material which contains Ti as a base component, from 0.03 to 0.5 wt % C, from 0.08 to 0.8 wt % O and from 0.03 to 0.6 wt % N. The total C, O and N content in the metal material is preferably from 0.14 to 1.1 wt %. Furthermore, pores of average diameter from 0.5 to 50 .mu.m are preferably dispersed in at least a surface region of the buccal tube, and the porosity of the holes is preferably from 0.05 to 5.0 vol %. The buccal tube may further comprises at least one engaging part which is preferably formed into a hook or engaging piece for example.
Abstract:
A dental-care device is constructed from a planar base and a wire receiving part positioned on the top surface of the planar base. Slots extending straight horizontally are formed at the center of the wire receiving part, and wire is passed through these slots. The device is preferably manufactured by a metal powder injection molding method, and is composed of metal material which contains Ti as the base component, C in an amount of from about 0.03-0.5 wt % by weight of the metal material, O in an amount of from about 0.08-0.8 wt % by weight of the metal material, and N in an amount of from about 0.03-0.6 wt % by weight of the metal material. A large number of pores may be scattered at least in the vicinity of the surface of the metal material. This device can be easily manufactured, has a good surface wetness characteristic, and has functional portions, such as portions of low friction and portions of superior adhesiveness.
Abstract:
A method and apparatus for cooling at least the inside of steel pipes. Cooling is effected while restraining the radial displacement of a pipe at a point not more than 500 mm, or preferably not more than 250 mm, away from each end of the pipe and at intermediate points spaced at intervals of 1.0 m to 2.5 m. Elliptical deformation in the cross section of larger-diameter pipes also is prevented by adding to the aforementioned cooling method and apparatus a device and step to rotate the pipe being cooled at a rate of 30 to 150 times per minute. The restraining device at one end of the pipe is designed to move in the direction of the pipe axis so that the restraint of the radial displacement at a point not more than 500 mm away from that end is at all times ensured even when the pipe length varies.
Abstract:
A device for measuring components of force and moment along and about three orthogonal axes, composed generally of a central hub portion, an annular rim portion and four radial spoke portions connecting the hub and rim portions and having strain gages adhered thereon for producing electric signals indicative of strains appearing therein, and typically used in a tire tester, wind tunnel balance and the like by fixing either the hub or rim portion and applying a force to the other, the improvement of which is its relatively simple structure and exclusion of mutual interference of the respective components in measurement.
Abstract:
A semiconductor device includes: an interface chip including a read timing control circuit that outputs, in response to a command signal and a clock signal supplied from the outside, a plurality of read control signals that are each in synchronization with the clock signal and have different timings; and core chips including a plurality of internal circuits that are stacked on the interface chip and each perform an operation indicated by the command signal in synchronization with the read control signals. According to the present invention, it is unnecessary to control latency in the core chips and therefore to supply the clock signal to the core chips.
Abstract:
When a lightness level expressed by a selected pixel value is equal to or larger than a threshold, the use amounts of respective color materials of a first color material group, and those of respective color materials of a third color material group are stored in a memory in association with the selected pixel value. On the other hand, when the lightness level expressed by the selected pixel value is smaller than the threshold, the use amounts of respective color materials of the first color material group, and those of respective color materials of a second color material group are stored in the memory in association with the selected pixel value.
Abstract:
An apparatus and method specify the presence/absence of an alteration and an alteration position of an image. A block-division unit divides image data into image data of a first unit including a predetermined number of pixels. A block calculation unit calculates an image data coefficient of the first unit. A cell-division unit divides one image data of the first unit into image data of a second unit. A cell calculation unit calculates an image data coefficient of the second unit. First verification data is generated by selecting two image data coefficients of the first unit and generating, for one pair, data representing the magnitude relation of the image data coefficients of the first unit. Second verification data is generated by selecting two image data coefficients of the second unit and generating, for one pair, data representing the magnitude relation of the image data coefficients of the second unit.
Abstract:
A method of manufacturing a translucent ceramic is provided. The method comprises: mixing a raw powder and an organic binder and kneading them to obtain a compound, the raw powder containing an aluminum oxide powder and a magnesium oxide powder, and the organic binder containing a first organic component and a second organic component; molding the compound in a predetermined shape by an injection molding method to obtain a green body; debinding the organic binder contained in the green body to obtain a brown body; and sintering the brown body to obtain a sintered body of the translucent ceramic. When the softening point of the first organic component is defined as “T1” (° C.) and the softening point of the second organic component is defined as “T2” (° C.), the kneading step is carried out at a temperature in the range of T2 or higher but lower than T1 after the raw powder and the organic binder are preheated at a temperature in the range of T1 to T1+100(° C.). An orthodontic member is also provided.