-
Article
Open AccessEngineering analysis of turbulent flow measurements near Kuchinoshima Island
Ocean current measurements from near Kuchinoshima Island are analyzed to consider turbulence characteristics with regard to the engineering design of an ocean current turbine. The location of the measurements ...
-
Article
An insulator element from the sea urchin Hemicentrotus pulcherrimus suppresses variation in transgene expression in cultured tobacco cells
Specialized DNA sequences known as insulators protect genes from both the positive and negative influences of nearby chromatin. Many insulators have been identified in various species; however, few function i...
-
Article
Simultaneous measurement of velocity and temperature in high-temperature turbulent flows: a combination of LDV and a three-wire temperature probe
This paper deals with a simple and reliable technique for simultaneous measurement of velocity and temperature in high-temperature turbulent flows, including combustion. The technique is based on the combinat...
-
Chapter and Conference Paper
Study of Liquid Nitrogen Pressure Losses for High-Tc Superconducting Cable
Liquid nitrogen can be used as cooling medium for high-Tc superconducting cables. In order to allow liquid nitrogen to flow properly under pressure, we must consider the pressure required for electrical insula...
-
Chapter and Conference Paper
Study on High-Tc Superconducting Magnet made with Bi-2212 Rutherford Cable
As there were no oxide superconducting wires with a large current capacity over 1kA, the high-Tc superconducting magnet for large-scale magnet could not be fabricated. In this investigation high-Tc superconductin...
-
Chapter and Conference Paper
Magnetic properties of Ag-DOPED SmBaCuO-System Superconductors
The large single domain of Ag-doped SmBaCuO-system superconductors with several compositions of Sm1+2xBa2+xCu3+xOy (x=0, 0,1, 0.2, 0.3 and 0.4) were prepared by a melt process. The sample size was 45mm in diamete...
-
Chapter and Conference Paper
The Development of the High-Tc Superconducting Cable Consist of the Transposed Segment Conductor
We developed cable conductors consist of transposed segments made of Ag-Mg-Sb alloy sheathed Bi-2223 tapes developed by Showa electric wire & cable co., LTD.. One transposed segment consists of 5 Ag-Mg-Sb allo...
-
Chapter and Conference Paper
Investigation of Characteristics of Axial Gap Type Superconducting Magnetic Bearing for 1kWh Flywheel
We have tackled with the improvement of the superconducting magnetic bearings and manufactured the newly developed facility which has possessed the cooling device with cryogenic refrigerator and the driving de...
-
Article
Microstructural Cause of the Peak Effect in Superconducting Y-Ba-Cu-O Melt-Grown Bulks
Superconducting Y-Ba-Cu-O bulks with J c as high as 30 kA /cm 2 (at 77 K and 1 T) containing both Y-123 and Y-211 phases were utili...
-
Chapter and Conference Paper
Initial Characterization Tests for Rutherford Cable Made with Bi-2212 High-Tc Superconducting Wire
Rutherford cable with a current capacity of 3.5kA at 4.2K in self field was fabricated using round Bi2Sr2CaCu2Ox(Bi-2212) silver-sheathed multifilament wires. The cable consisted of 19 strands with about 300 fila...
-
Chapter and Conference Paper
A.C. transport properties of the high-Tc superconducting cable consist of the transposed segment conductor
The interlayer current distribution in the cylindrical multi-layered conductors was one of the problems on using high-Tc superconducting materials for A.C. current loading cable. We developed cable conductors ...
-
Chapter and Conference Paper
“Large-Area TEM” Observation of the Distribution of Y-211 Particles in YBCO Superconductors Melt-Grown under Varying Oxygen Pressure
The “peak effect” was observed in the J c -vs-H characteristics of an YBCO superconducting bulk melt-grown under varying oxygen partial pressure. “Large-area TEM...
-
Chapter
Fabrication of YBa2Cu3Ox, Superconducting Tape by Continuous MOCVD Technique
The effect of the deposition conditions (Po2 Ts) on the crystallinity of YBCO films was investigated. The stability line estimated in this work shifted to higher Po2 region compared with the equilibrium phase dia...
-
Chapter and Conference Paper
Evaluation of magnetic force characteristics in High-Tc super-conducting flywheel
We developed the numerical analysis of magnetic force characteristics in high-Tc bulk superconducter. In analysis using the measured Jc, We obtained good agreements with experimental results under different ma...
-
Chapter
Magnetic Properties of the YBaCuO-System Superconductors
A large single domain of the Ag-doped YBaCuO-system superconductor was prepared. To estimate the effect of the Ag adding, the Jc and the trapped magnetic field were measured. The entire sample was uniformly ma...
-
Chapter and Conference Paper
Pressure Drop Measurement of Liquid-Nitrogen Flow in Conductor Conduit of Cables
The cooling-span length design of the high-Tc superconducting cable system applied with liquid-nitrogen flow must be investigated to determine whether its use is practical. The liquid-nitrogen flow system desi...
-
Chapter and Conference Paper
Development on CFRP Rotor for 1kWh Superconducting Flywheel System
A full-scale CFRP flywheel for 1kWh superconducting flywheel system with the outer diameter of 600mm was manufactured, and it has been confirmed that the rotor was able to rotate having the margine of the spee...
-
Chapter and Conference Paper
Grain Growth of Y2BaCuO5 in the YBa2Cu3O7-X Superconductor Prepared by a Melt Process
We have studied the inhomogeneity in the sample prepared by a melt process with a unidirectional growth technique. The average size of 211 particles in the YBCO bulk prepared under the temperature gradient dec...
-
Chapter and Conference Paper
Tests on Small Sized Rotary Model of Flywheel with High Temperature Superconducting Magnetic Bearings
In order to investigate the levitating and rotating characteristics of high temperature superconducting magnetic bearings with newly developed superconducting bulk materials and permanent magnets, the small si...
-
Chapter and Conference Paper
Fabrication of the Model Cable using Bi-2223 Ag Sheathed Tapes
A superconducting model cable was designed and fabricated. The cable consisted of conductor, electric insulation, thermal insulation, LN2 paths for cooling, and corrugated aluminum sheath with PVC layer. The c...
