We examined the distribution of vortices in both Bi-2223 Ag-sheathed tape and U-doped Bi-2223 Ag-sheathed tape applying the high-resolution Bitter method. In the low temperature region ( ), we found that the vortices in the undoped Bi-2223 Ag-sheathed tape developed into either a triangular arrangement or a heterogeneous arrangement along the grain boundaries of the Ag sheath, which form weak p...

The decomposition of almost fully reacted (Bi,Pb)2Sr2Ca2Cu3Ox (BSCCO-2223) tapes caused by heating in 1 atm of pure O2 at 825 C has been studied. It was found that partially decomposing 2223 tapes to a mixture of Bi2Sr2Ca1Cu2Oy, (Ca,Sr)2PbO4, and other secondary phases reduced the critical current density (77 K, 0 T) from ~20 kA/cm to nearly zero. Reheating the tapes in 7.5% O2 restored the 222...

There are many ways an organization can approach innovation. On one end of the spectrum an organization can choose to have everyone submit any idea. On the other, innovation can be generated from a small, dedicated group of specialists. In the middle there are many variations along the way. This paper discusses the open innovation typology and the options for an organization making the decision...

In this research, the influence of Bi nanoparticles addition on the high temperature superconductor BSCCO-2223 was studied. For this purpose, the samples were synthesized by the conventional sol-gel method. Then, the Bi nanoparticles with x= 0.00, 0.03, 0.06, 0.12wt% was added to BSCCO-2223. The structural characterization of all the samples was done by X-ray diffraction pattern (XRD). Also, th...

New Therapeutic Options in Congestive Heart Failure : Part II Print ISSN: 0009-7322. Online ISSN: 1524-4539 Copyright © 2002 American Heart Association, Inc. All rights reserved. is published by the American Heart Association, 7272 Greenville Avenue, Dallas, TX 75231 Circulation doi: 10.1161/01.CIR.0000014771.38666.22 2002;105:2223-2228 Circulation. http://circ.ahajournals.org/content/105/18/22...