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TSUGIO HAMADA YOSHIHISA OHZONO TADAHIRO AKUNE NOBUYOSHI SAKAMOTO 《Journal of Materials Science》1997,32(13):3469-3473
The critical current density, Jc, in fluorine-doped YBa2Cu3Ox bulk superconductors has been measured at several temperatures. The measured Jc value is 108 A m-2 at 77 K and 0.5 T. A sample with a larger critical current density can be produced by the addition of a small amount of platinum during the sintering process. The added platinum has the effect of evenly distributing Y2BaCuO5 particles and voids in the matrix in comparison with the undoped sample. These distributions of Y2BaCuO5 particles and voids are reflected in an increase in the critical current density. However, these distributions are not directly related to the observed peak effect in the critical current density. If the fluorine-doped YBa2Cu3Ox superconductor consists of the matrix and a phase with a Ginzburg–Landau parameter, that is slightly different from that of the matrix, then the occurrence of the peak effect can be explained. 相似文献
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Cost‐Benefit Analysis of Renewable Installation in Inter‐Intelligent Renewable Energy Network
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In this paper, we target the specific smart grid concept called “inter‐intelligent renewable energy network (i‐Rene),” which is characteristically associated with photovoltaic (PV) panels, microstorage, and regional electricity markets. In this smart grid, every house has an artificial intelligence agent that learns the optimal treading strategy to minimize payments by residents. From the economic standpoint, we perform a cost‐benefit analysis (CBA) of the optimal installation of PV panels and microstorage in this smart grid. To perform the CBA, we use actual measured values of power demand profiles and power production profiles, which were obtained in 2010 at Shiga, Japan. In accordance with this analysis, we also discuss the necessary conditions for achieving grid parity of the i‐Rene smart grid . 相似文献
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RENICHI KONDO MASAKI DAIMON KIYOSHI ASAGA TADAHIRO NISHIKAWA KUNIO KITAJIMA NOBUTOSHI DAIMON 《Journal of the American Ceramic Society》1980,63(1-2):41-43
Solid solutions in the system taeniolite (KMg2 LiSi4 O10 F2 )-sodium taeniolite (NaMg2 LiSi4 O10 F2 ) were synthesized to study the solid solubility and swelling characteristics. Based on their melting behavior, crystals were grown for X-ray structural analysis. A complete solid solution series does not form in this system; there are two types of micas, K-rich taeniolite (0≤ x <0.5, x = Na/Na + K) and Na-rich taeniolite (0.8< x ≤l). The Na-rich taeniolite exhibits swelling properties, which become less pronounced with increasing potassium content. Melting and crystallization behavior were investigated by DTA. Solid solutions with higher sodium content melted at lower temperatures and crystallization occurred over a wide range of temperatures. To obtain larger crystals, the samples containing small crystallites were remelted at slightly above their melting points, then cooled slowly. 相似文献
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