The Experts below are selected from a list of 9366 Experts worldwide ranked by ideXlab platform
Hussein Saddam - One of the best experts on this subject based on the ideXlab platform.
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Eksistensi Amerika Serikat Sebagai Kekuatan Global
Global dan Policy, 2020Co-Authors: Hussein SaddamAbstract:ABSTRACTCurrently, the global crisis has cause some major countries experiencing major crisesit also has no exception to the Superpower United States today. United States as a Superpower has experienced over-stretched that we can see in the two wars that occurred after the 911. This accident rise some countries confidence against the brave United States. And it is increasingly demonstrating the existence of the United States began replaced as a Superpower or the ruler of the world. In 2010, the efforts of United States escape from two wars that they created himself has drained resources and undermining his authority as a Superpower. And this year 2010 become a witness of how the United States busy to defend their position as a Superpower.Keywords : United States, Superpower Country, Global Powe
Stephen Blaha - One of the best experts on this subject based on the ideXlab platform.
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new mayan Superpower war hieroglyphics support for a theory of civilizations
Social Science Research Network, 2002Co-Authors: Stephen BlahaAbstract:Newly found Mayan hieroglyphics (at Dos Pilas, Guatemala) that describe a series of wars between Mayan "Superpowers" Tikal and Calakmul appear to support a new mathematical theory of civilizations. Major events in the history of Teotihuacan (near Mexico City) in Mayan times also are consistent with the predictions of this theory.
Y Chen - One of the best experts on this subject based on the ideXlab platform.
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second generation hts wire manufacturing and technology advancement at Superpower
International Conference on Applied Superconductivity and Electromagnetic Devices, 2009Co-Authors: Yiyuan Xie, V Selvamanickam, Maxim Marchevsky, Y Chen, Xuming Xiong, Andrei Rar, Ken Lenseth, Yunfei Qiao, Drew W Hazelton, Allan Robert KnollAbstract:REBa 2 Cu 3 O 7−δ (REBCO) coated conductor, namely second generation high-temperature (2G HTS) wire, holds enormous promise for many real world applications such as electrical power transmission cables, superconducting magnets, energy storage, fault current limiters, motors, generators and medical devices. Superpower is developing and manufacturing high-performance 2G HTS wire based on two high-throughput processes: IBAD-MgO for texture buffer and MOCVD for the HTS layer. Tremendous progress has been made in 2G HTS wire technology development and manufacturing in the past few years. In this paper, we report our overall achievements in kilometer long wire fabrication reaching a minimum I c of 282 A/cm-w over 1,065 m, practical conductor development for ac application and recent achievement in high-field coils and quench detection technique.
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Recent Progress in Second-Generation HTS Conductor Scale-Up at Superpower
IEEE Transactions on Applied Superconductivity, 2007Co-Authors: V Selvamanickam, Y Chen, Ken Lenseth, X. Xiong, Y. Y. Xie, J. L. Reeves, X. Zhang, Y. Qiao, R. M. Schmidt, Andrei RarAbstract:YBa2Cu3Ox (YBCO) second-generation (2G) HTS conductors have been produced in lengths over 300 m in pilot scale facilities established at Superpower. High throughput pilot-scale manufacturing has been demonstrated with tape speeds at or above 30 m/h of 12 mm wide tape (corresponding to 90 m/h of 4 mm wide conductor) in all steps. A 322 m long conductor with a minimum critical current value of 219 A/cm has been produced, which corresponds to a critical current x length value of 70,520 A-m. A 270 m long, 4 mm wide conductor with an end-to-end critical value of 100 A has also been demonstrated. In a campaign to manufacture 2G conductor for the Albany cable project, Superpower has produced 12,470 m of conductor that meets or exceeds the specification for piece length (42.4 m) and critical current (100 A/cm). In fact, more than 55% of the conductor produced is at least 100 m in piece length and more than 27% greater than 200 m in piece length. In addition to scaling up 2G conductors to high-throughput pilot-scale manufacturing, we have demonstrated high critical currents in short samples produced by Metal Organic Chemical Vapor Deposition (MOCVD). Critical current values of 557 A/cm have been achieved in 2.1 micrometer thick films in 12 mm wide, 10 cm long tapes. These samples exhibit a critical current value of 116 A/cm at 1 T and 76 K, in the orientation of field parallel to the c-axis. We have also constructed a 4-pancake coil that generated a magnetic field of 1.1 T at 77 K and 2.4 T at 64 K. A Fault Current Limiter (FCL) assembly has been successfully constructed and tested at high power levels. A prospective current of 90 kA was successfully limited to 32 kA within 1 ms without any HTS element failure.
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progress in scale up of second generation high temperature superconductors at Superpower inc
Physica C-superconductivity and Its Applications, 2005Co-Authors: Y. Y. Xie, Y Chen, A Knoll, Xiaoxiong Xiong, Youlin Qiao, Pengkun Hou, J Reeves, T Salagaj, K Lenseth, L CivaleAbstract:Abstract Superpower is focused on scaling up second-generation (2-G) high-temperature superconductor (HTS) technology to pilot-scale manufacturing. The emphasis of this program is to develop R&D solutions for scale-up issues in pilot-scale operations to lay the foundation for a framework for large-scale manufacturing. Throughput continues to be increased in all process steps including substrate polishing, buffer and HTS deposition. 2-G HTS conductors have been produced in lengths up to 100 m. Process optimization with valuable information provided by several unique process control and quality-control tools has yielded performances of 6000–7000 A m (77 K, 0 T) in 50–100 m lengths using two HTS fabrication processes: metal organic chemical vapor deposition (MOCVD) and pulsed laser deposition (PLD). Major progress has been made towards the development of practical conductor configurations. Modifications to the HTS fabrication process have resulted in enhanced performance in magnetic fields. Industrial slitting and electroplating processes have been successfully adopted to fabricate tapes in width of 4 mm and with copper stabilizer for cable and coil applications. Superpower’s conductor configuration has yielded excellent mechanical properties and overcurrent carrying capability. Over 60 m of such practical conductors with critical current over 100 A/cm-width have been delivered to Sumitomo Electric Industries, Ltd. for prototype cable construction.
Andrei Rar - One of the best experts on this subject based on the ideXlab platform.
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second generation hts wire manufacturing and technology advancement at Superpower
International Conference on Applied Superconductivity and Electromagnetic Devices, 2009Co-Authors: Yiyuan Xie, V Selvamanickam, Maxim Marchevsky, Y Chen, Xuming Xiong, Andrei Rar, Ken Lenseth, Yunfei Qiao, Drew W Hazelton, Allan Robert KnollAbstract:REBa 2 Cu 3 O 7−δ (REBCO) coated conductor, namely second generation high-temperature (2G HTS) wire, holds enormous promise for many real world applications such as electrical power transmission cables, superconducting magnets, energy storage, fault current limiters, motors, generators and medical devices. Superpower is developing and manufacturing high-performance 2G HTS wire based on two high-throughput processes: IBAD-MgO for texture buffer and MOCVD for the HTS layer. Tremendous progress has been made in 2G HTS wire technology development and manufacturing in the past few years. In this paper, we report our overall achievements in kilometer long wire fabrication reaching a minimum I c of 282 A/cm-w over 1,065 m, practical conductor development for ac application and recent achievement in high-field coils and quench detection technique.
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Recent Progress in Second-Generation HTS Conductor Scale-Up at Superpower
IEEE Transactions on Applied Superconductivity, 2007Co-Authors: V Selvamanickam, Y Chen, Ken Lenseth, X. Xiong, Y. Y. Xie, J. L. Reeves, X. Zhang, Y. Qiao, R. M. Schmidt, Andrei RarAbstract:YBa2Cu3Ox (YBCO) second-generation (2G) HTS conductors have been produced in lengths over 300 m in pilot scale facilities established at Superpower. High throughput pilot-scale manufacturing has been demonstrated with tape speeds at or above 30 m/h of 12 mm wide tape (corresponding to 90 m/h of 4 mm wide conductor) in all steps. A 322 m long conductor with a minimum critical current value of 219 A/cm has been produced, which corresponds to a critical current x length value of 70,520 A-m. A 270 m long, 4 mm wide conductor with an end-to-end critical value of 100 A has also been demonstrated. In a campaign to manufacture 2G conductor for the Albany cable project, Superpower has produced 12,470 m of conductor that meets or exceeds the specification for piece length (42.4 m) and critical current (100 A/cm). In fact, more than 55% of the conductor produced is at least 100 m in piece length and more than 27% greater than 200 m in piece length. In addition to scaling up 2G conductors to high-throughput pilot-scale manufacturing, we have demonstrated high critical currents in short samples produced by Metal Organic Chemical Vapor Deposition (MOCVD). Critical current values of 557 A/cm have been achieved in 2.1 micrometer thick films in 12 mm wide, 10 cm long tapes. These samples exhibit a critical current value of 116 A/cm at 1 T and 76 K, in the orientation of field parallel to the c-axis. We have also constructed a 4-pancake coil that generated a magnetic field of 1.1 T at 77 K and 2.4 T at 64 K. A Fault Current Limiter (FCL) assembly has been successfully constructed and tested at high power levels. A prospective current of 90 kA was successfully limited to 32 kA within 1 ms without any HTS element failure.
Allan Robert Knoll - One of the best experts on this subject based on the ideXlab platform.
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second generation hts wire manufacturing and technology advancement at Superpower
International Conference on Applied Superconductivity and Electromagnetic Devices, 2009Co-Authors: Yiyuan Xie, V Selvamanickam, Maxim Marchevsky, Y Chen, Xuming Xiong, Andrei Rar, Ken Lenseth, Yunfei Qiao, Drew W Hazelton, Allan Robert KnollAbstract:REBa 2 Cu 3 O 7−δ (REBCO) coated conductor, namely second generation high-temperature (2G HTS) wire, holds enormous promise for many real world applications such as electrical power transmission cables, superconducting magnets, energy storage, fault current limiters, motors, generators and medical devices. Superpower is developing and manufacturing high-performance 2G HTS wire based on two high-throughput processes: IBAD-MgO for texture buffer and MOCVD for the HTS layer. Tremendous progress has been made in 2G HTS wire technology development and manufacturing in the past few years. In this paper, we report our overall achievements in kilometer long wire fabrication reaching a minimum I c of 282 A/cm-w over 1,065 m, practical conductor development for ac application and recent achievement in high-field coils and quench detection technique.
