摘要:
To ensure a well-oriented crystal structure, there is provided a process of producing an oxide superconductor of a Y--Ba--Cu--O system with a composition having an atomic ratio Y:Ba:Cu of 1.0-2.0:2.0-2.5:3.0-3.5, the process comprising the steps of: preparing a semimelt including solid and liquid phases and consisting of Y, Ba, Cu and O in the atomic ratio; and solidifying the semimelt to form the oxide superconductor by so controlling a moving speed of a solidification front to have two components of different values in two perpendicularly intersecting directions.
摘要:
An oxide superconductor comprises a composition represented by the composition formula: (Nd.sub.x --Ce.sub.y --L.sub.z).sub.2 CuO.sub.4-d (wherein L is an element selected from Ca and Mg, and x+y+z=1). The compositions of Nd, Ce and L of the oxide superconductor corresponds to a point falling inside an area of Nd--Ce--L ternary diagram surrounded by straight lines (A-B), (B-C), (C-D) and (D-A) connecting point (A) with point (B), point (B) with point (C), point (C) with point (D) and point (D) with point (A), respectively, the points (A), (B), (C) and (D) being points (x=1, y=0, z=0), (x=0.4, y=0.6, z=0), (x=0.4, y=0.3, z=0.3) and (x=0.1, y=0, z=0.9), respectively, in the Nd--Ce--L ternary diagram. Above-described Nd--Ce--L--Cu--O oxides can exhibit superconductivity within a wide range of composition when heat-treated in an atmosphere of nitrogen.
摘要:
A superconductive material is disclosed which has the following composition:(R.sub.1-x Ca.sub.x)(Ba.sub.1-y La.sub.y).sub.2 Cu.sub.4 O.sub.8wherein R is at least one element selected from Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, x is a number in the range of 0-0.3 and y is a number in the range of 0.001-0.3 with the proviso that y is not greater than 0.2 when x is not 0.
摘要:
The present invention provides a vector plasmid capable of efficient tumor necrosis factor (TNF) production, a process capable of efficient TNF production in a host transformed with said plasmid and a composition containing the TNF produced by said process.The novel plasmid of the present invention is characterized by having inserted therein a DNA fragment that has a phage-derived promoter region upstream of a structural gene for TNF and in which a DNA fragment containing an E. coli gene-derived transcription termination coding base sequence (terminator) is joined immediately downstream of a base sequence coding for the termination of translation of said structural gene.
摘要:
An apparatus for manufacturing a multielement sintered material is provided, more particularly an appartus of the automated type which weighs and mixes predetermined amounts of powdery elements, molds the mixed elements and then sinters them.
摘要:
A novel functional high polymeric substance having .alpha.,.beta.-unsaturated carboxylate group, which is obtained by reacting a liquid high polymeric substance containing carbon-to-carbon unsaturated double bond or a solution of said high polymeric substance with .alpha.,.beta.-unsaturated carboxylic acid and its derivative in the presence of pseudo halogen compound. A rubber composition suitable for sealant is obtained by compounding said functional high polymeric substance with a plasticizer and/or a filler.
摘要:
A high polymeric substance having isocyanate group is produced by reacting a liquid high polymeric substance containing carbon-to-carbon unsaturated double bond or a solution of said high polymeric substance with a cyanate, an alkyl hypohalite and an organic carboxylic acid.
摘要:
A navigation apparatus is provided that is highly convenient for a user to view a map screen and a menu window. A display controller 15 determines a view mode of each of a map screen and a menu window, based on information about a travel condition of a moving object from a route search unit 12 and an own-vehicle location identification unit, when the menu window is displayed according to information entered from an input unit 10. A display map generator 16 generates a map screen according to information about the view mode from the display controller 15. A display menu generator 17 generates a menu window according to information about the view mode from the display controller 15. A display unit 21 displays the map screen from the display map generator 16 and the menu window from the menu generator 17.
摘要:
An autonomous mobile body includes a storage unit arranged to store a size D2 of the autonomous mobile body, a laser range sensor arranged to acquire obstacle information, an obstacle identification unit arranged to identify, based on the acquired obstacle information, edge points indicating positions of both ends of a region in which an interfering obstacle exists, the both ends being both ends on a plane parallel or substantially parallel to a passage plane in a direction which is perpendicular or substantially perpendicular to a moving target direction of the autonomous mobile body, a direction setting unit arranged to set a pull-off direction based on the size D2 of the autonomous mobile body and the edge points, and a mobile controller arranged and programmed to control the autonomous mobile body to move toward the pull-off direction.
摘要:
An autonomous mobile device that moves while autonomously avoiding zones into which entry should be avoided even if no obstacle exists therein includes a laser range finder that acquires peripheral obstacle information, a storage unit that stores an environment map that shows an obstacle zone where an obstacle exists, and a no-entry zone map which shows a no-entry zone into which entry is prohibited, a self-location estimation unit that estimates the self-location of a host device by using the obstacle information acquired by the laser range finder and the environment map, and a travel control unit that controls the host device to autonomously travel to the destination by avoiding the obstacle zone and the no-entry zone based on the estimated self-location, the environment map, and the no-entry zone map.