摘要:
A method for the production of a superconducting oxide tape having a Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10 (Bi-2223) structure interposed between silver sheets, which method consists essentially of preparing a sandwich structure having interposed between silver sheets a molded layer of a superconducting oxide precursor powder consisting essentially of Bi, Pb, Sr, Ca, Cu, and O obtained from a raw material substance composed of, in atomic composition ratio, 1.00 of Bi, 0-0.2 of Pb, 0.9-1.1 of Sr, 0.9-1.1 of Ca and 1.3-1.7 of Cu, and O, heating the sandwich structure in an atmosphere consisting of oxygen and an inert gas, having an oxygen partial pressure in the range of 0-5%, and kept at a temperature in the range of 830-850.degree. C., thereby melting the molded layer, then causing the atmosphere to retain the heating temperature and meanwhile increasing the oxygen partial pressure, thereby inducing precipitation of crystal grains possessing a Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8 (Bi-2212) structure and excelling in orientation, and subsequently maintaining the oxygen partial pressure and temperature at the time of precipitation of the crystal grains, thereby transforming the structure into the (Bi-2223) structure while retaining the particle diameter of the crystal grains and the state of orientation, and superconducting oxide tape produced by the method.
摘要:
A method for the production of a superconducting polycrystalline wire rod having all the crystal (a, b, c) axes thereof aligned is disclosed, which consists of a step of arraying a plurality of superconducting whiskers of a composition of Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8 (Bi-2212 phase) in such a manner as to parallellize the fiber axes of the whiskers and then aligning all the crystal axes of the superconducting whiskers with parallellized fiber axes and a step of heat-treating the resultant whiskers.
摘要:
This invention concerns a method for the production of an oxide superconducting tape material having a composition of Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8, which method consists essentially of forming a sandwich structure comprising a layer formed of a superconducting powder consisting essentially of Bi, Sr, Ca, Cu, and O and having an essential structure of Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8 and silver sheet layers, the superconducting powder layer being interposed between the silver sheet layers, heating the sandwich structure at a temperature in the range of 810.degree.-910.degree. C. in an atmosphere consisting of oxygen and an inert gas and having an oxygen partial pressure in the range of 0-90%, thereby melting the superconducting powder layer, and then elevating the oxygen partial pressure of the atmosphere while retaining the same heating temperature, thereby crystallizing the molten superconducting powder layer.
摘要翻译:本发明涉及一种制备具有Bi 2 Sr 2 CaCu 2 O 8组成的氧化物超导带材料的方法,该方法主要包括形成夹层结构,该夹层结构包括由基本上由Bi,Sr,Ca,Cu和O组成的超导粉末形成的层 并且具有Bi2Sr2CaCu2O8和银片层的基本结构,超导粉末层插入在银层之间,在810-910℃的温度范围内,在由氧和 惰性气体,氧分压在0〜90%的范围内,从而熔化超导粉末层,然后在保持相同的加热温度的同时提高大气的氧气分压,从而使熔融的超导粉末层结晶。
摘要:
An outer surface of a cold-storage container (or a refrigerant tube) is provided with a plurality of protrusion portions or recess portions. A cooling air passage, in which air flows to cool a space to be cooled in a cold storage time and in a cold release time of the cold storage material, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container bonded to the refrigerant tube. The refrigerant tubes and the cold storage container form therebetween a cold-storage side air passage by the protrusion portions or the recess portions, such that air flows in the cold-storage side air passage separated from the cooling air passage. For example, the cold-storage side air passage is provided with a slanting space that causes condensed water or ice generated in the cold storage time to be drained along the cold-storage side air passage.
摘要:
In the context of the early detection and monitoring of eye diseases, such as glaucoma and diabetic retinopathy, the use of optical coherence tomography presents the difficulty, with respect to blood vessel segmentation, of weak visibility of vessel pattern in the OCT fundus image. To address this problem, a boosting learning approach uses three-dimensional (3D) information to effect automated segmentation of retinal blood vessels. The automated blood vessel segmentation technique described herein is based on 3D spectral domain OCT and provides accurate vessel pattern for clinical analysis, for retinal image registration, and for early diagnosis and monitoring of the progression of glaucoma and other retinal diseases. The technique employs a machine learning algorithm to identify blood vessel automatically in 3D OCT image, in a manner that does not rely on retinal layer segmentation.
摘要:
To provide a waveguide type wavelength domain optical switch which makes it possible to use a cheap lens, makes it possible to correct aberration of the demultiplexed wavelengths produced in a plurality of waveguide type demultiplexing circuits, a wavelength domain optical switch is provided with: an integrated element formed by laminating three or more waveguide type demultiplexing circuits; a first lens for collecting light emitted from the integrated element; a polarization separation element for separating light emitted from the first lens into X polarization and Y polarization and emitting the X polarization and the Y polarization at different angles; a second lens for collecting the X polarization and the Y polarization; a first reflective optical phase modulator for reflecting the collected X polarization and Y polarization at any angles; a ½-wavelength plate disposed between the second lens and the first reflective optical phase modulator in order to make polarization directions of the X polarization and the Y polarization identical; and a second reflective optical phase modulator for inputting light from the first reflective optical phase modulator into one of the waveguide type demultiplexing circuits.
摘要:
A document processing system includes: a document management server that manages document data and an access key to access to the document data in association with each other; and an information processing unit including: a processing section; and a display detachably linked to the processing section by one of wired and wireless connection, the display holding an image of a document, the display storing the access key to access to the document data, the processing section comprising: a connection section to which the display is linked so as to read the access key from the display; a document acquisition section that acquires the document data corresponding to the access key read from the display from the document management server; and a document processing section that processes the document data acquired from the document management server.
摘要:
An optical gate switch circuit includes: an asymmetric Mach-Zehnder interferometer having an optical path that outputs control light and probe light to a second optical directional coupler via a first optical directional coupler and an optical phase modulation element, and another optical path that connects a third optical directional coupler to which the probe light is input, to the second optical directional coupler via a variable optical attenuator and an optical phase shifter; and a bandpass filter connected to the second optical directional coupler.
摘要:
A technique for enhancing the execution efficiency of simulation of a hybrid system. A continuous system simulator receives a request for evaluation of an event generating conditional expression for an event to be processed by a discrete system simulator, from the discrete system simulator. The event generating conditional expression is evaluated by referring to the value of a first variable describing a continuous system. Until evaluation of the event generating conditional expression indicates true, the continuous system simulator repeats simulation of advancing the current time by a step time interval and evaluation of the event generating conditional expression. When evaluation of the event generating conditional expression indicates true, the continuous system simulator sends current time data and the value of a second variable describing the continuous system which is referred to by the discrete simulator, to the discrete simulator.
摘要:
A system, method and computer program for generating a sequence diagram that specifies processing among modules included in source code. First, a source code is acquired and then analyzed to generate a log acquisition code for acquiring an execution log. Then, a program including the generated log acquisition code is executed to acquire execution log information on the execution of the program. On the basis of the acquired execution log information, automaton information on states and transitions among the states is extracted, and then the extracted automaton information is converted into sequence diagram component information on components constituting a sequence diagram. Thereafter, a sequence diagram is generated based on the converted sequence diagram component information.