摘要:
Disclosed is a method and an apparatus for accelerating and shooting a flying body at superhigh speed, consisting of a capacitor in which a high electric charge can be stored; a primary coil connected to the capacitor via a switching means; a conductive cylindrical liner disposed in the primary coil; an opening defined on a cylindrical wall of the cylindrical liner; and a flying body interposed in the opening and assuming electrical continuity with the liner; wherein a high electric charge stored in the capacitor is momentarily applied to the primary coil so as to compress abruptly the cylindrical liner radially inward and to shoot the flying body interposed in the opening toward the axis of the liner.
摘要:
A sintered product of silicon nitride containing not smaller than 70 mol % of a .beta.-silicon nitride as well as an element of the Group 3a at least including Lu of periodic table and impurity oxygen, wherein when the content of the element of the Group 3a of periodic table and the content of the impurity oxygen are, respectively, expressed being reckoned as the amount of an oxide of the element of the Group 3a of periodic table (RE.sub.2 O.sub.3) and as the amount of SiO.sub.2 of impurity oxygen, their total amount is from 2 to 30 mol %, the molar ratio (SiO.sub.2 /RE.sub.2 O.sub.3) of the amount of the element of the Group 3a of periodic table reckoned as the oxide (RE.sub.2 O.sub.3) thereof to the amount of impurity oxygen reckoned as SiO.sub.2 is from 1.6 to 10, and the intergranular phase of the sintered product chiefly comprises a crystal phase consisting of the element of the Group 3a of periodic table, silicon and oxygen and a process for producing the same. The sintered product has a large strength from room temperature through up to high temperatures and maintains excellent resistance against oxidation even at high temperatures, and exhibits excellent resistance against creeping and excellent breaking toughness.
摘要翻译:包含不小于70mol%的β-氮化硅的氮化硅的烧结产品以及至少包括Lu的元素周期表和杂质氧的第3a族的元素,其中当第3a族元素的含量 的周期表和杂质氧的含量分别表示为元素周期表(RE 2 O 3)的第3a族元素的氧化物的量和杂质氧的SiO 2的量,它们的总量是 2〜30摩尔%时,作为氧化物(RE 2 O 3)的元素周期表中的元素的量与作为SiO 2计算的杂质氧的量的摩尔比(SiO 2 / RE 2 O 3)为1.6〜10 ,并且烧结体的晶间相主要包含由元素周期表第3a族元素,硅和氧组成的结晶相及其制造方法。 该烧结体从室温至高温具有很大的强度,即使在高温下也能保持优异的抗氧化性,并且具有优异的抗蠕变性和优异的断裂韧性。
摘要:
In a device used to inspect substrates visually, an imaging region and a magnification are specified ahead of time for every component and stored as library data in a memory. The memory also contains CAD data, which include the class of each component on the substrate and its location. During initialization, a control unit links the location data for a component extracted from the CAD data to corresponding library data and specifies a field of view and a magnification for every component on the substrate. Using this data, the control unit creates on the substrate a number of viewing zones to be inspected at various magnifications and stores the data specifying these zones in the memory. When a substrate is to be inspected, the control unit uses the data specifying these zones to control the position and magnification of an imaging unit to collect image data from each zone successively and display them on a monitor.
摘要:
The object of the present invention is to provide a spray-on (gunning) refractory composition having high anti-stripping property, adhesive strength and corrosion resistant property suitable even for high temperature operation in steelmaking furnace. To refractory materials, resol type phenolic resin powder, being in semi-melting state at 80.degree. C. to 500.degree. C. and having weight average molecular weight of 1,000 to 15,000 and residual monomer of not more than 1,000 ppm, or phenol-formaldehyde resin powder, being in heat melting, self-hardening state at 100.degree. C. to 500.degree. C., having weight average molecular weight of 1,000 to 15,000 and residual monomer of not more than 1,000 ppm, and containing reactive methylol group by 6 to 9 weight %, said phenol-formaldehyde resin powder being added by 2 to 10 weight %, and pitch with high softening point of 100.degree. C. to 500.degree. C. being added by 2 to 10 weight %.
摘要:
A communication control system for providing and registering a plurality of virtual circuits and sequentially transferring cells via the virtual circuits in response to request for transferring cells in an synchronous transfer mode is described. The communications control system comprises a device for determining whether or not it is permitted to transfer a cell via each virtual circuit having been registered in order to control the rate of transferring cells via the virtual circuit, and a device for erasing the registration of each virtual circuit if no cell is transferred via the virtual circuit for a predetermined time period after latest transmission on the basis of information for controlling the rate of transferring cells via the virtual circuit. In this configuration, erroneous operation is prevented which originates from overflow occurring in a counter for counting the present time.
摘要:
A d- or l-tartaric acid amide derivative serving as a host compound and a method of producing the amide derivative which combines with a guest compound to form a clathrate compound and which is expressed by the following Formula (A) or (B): ##STR1##
摘要:
An evaluation facilitating circuit incorporated in a logic circuit having a plurality of functional blocks, includes: many scan register groups obtained by dividing many F/Fs provided in each functional block, many scan paths for scanning a plurality of test data used for input and output operations for the scan register groups, wherein a scan path is provided for each scan register group, and a decoder for designating the scan paths and controlling the input and output operations of test signals used for testing the scan register groups. A first scan register group in each functional group is composed of scan registers only used for the input operations to other functional blocks, a second scan register group is composed of scan registers only used for the output operations to other functional blocks and a third scan register group is composed of scan registers used for the input and output operations to the same functional block. Each scan path is connected to a common bus provided in the functional circuit. The common bus includes many signal lines through which the test data is transferred, and the scan path connected to a first scan register group is connected to a first pair of signal lines, the scan path connected to the second scan register group is connected to a second pair of signal lines, and the scan path connected to the third scan register group is connected to a third pair of signal lines.
摘要:
A developer for an electrostatic latent image is disclosed, which comprises a toner powder and a fine powder of an acrylic homopolymer or copolymer having an average particle size smaller than that of the toner powder. The developer can be easily cleaned off without causing damage to a latent image-forming member.
摘要:
A truing device that can form surfaces of hones, installed in a honing tool, into R-shapes (i.e. provided with rounded off edges or corners) with the same diameter as that of the honing tool or plane shapes. A truing tool is provided with a penetrating hole through which the honing tool is inserted and at least a part of an inner surface of the penetrating hole is a cylindrical surface having the same diameter as that of the honing tool and at least a part of said penetrating hole inner surface is provided with cutting edges for hone grinding. A tool holder housing the truing tool attachably and removably is held in a jig body of a tool holding device in a manner that the tool holder can shake within a range of three dimensional minute angles, thereby allowing said truing tool to smoothly follow movement of said honing tool during truing.
摘要:
A vertical edge width calculation circuit 31 has a plurality of series-connected delay circuits 31a to 31h each having a one-horizontal period delay time. A horizontal edge width calculation circuit has a plurality of 1-pixel delay circuits 32a to 32h corresponding to the edge width. A horizontal distance between an input digital superimpose key signal and a raster position is calculated in accordance with the calculated vertical distance, that is, the edge width. In accordance with the calculated vertical and horizontal distances, a detection circuit 34 detects as a true Euclidean distance a minimum value among a plurality of Euclidean distances between the digital superimpose key signal and the raster position which are stored in ROMs 33.sub.0 to 33.sub.5.