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MIT engineers have developed ultralight fabric solar cells that can quickly and easily turn any surface into a power source.
秦山核电厂安全电源可靠性分析（The Reliability Analysis of Safety Power Source in Qinshan Nuclear Power Plant ）
安全电源 应急电源 快速切换
2008/10/29
介绍秦山核电厂安全电源、安全电源的3个上级电源的关系，根据实际运行分别分析了影响3个电源可靠性的因素，并分别提出了改进措施，有的已经实施，有的准备实施，有的还需进一步研究。
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resources as the extensive exploration area makes it difficult to maintain contact with operators. AUVs depend on batteries, so their power consumption should be reduced to extend exploration time. Power for conventional marine instrument systems is incorporated in their waterproof sealing. External intermittent control of this power source until termination of exploration is challenging due to limitations imposed by the underwater environment. Thus, the AUV must have a power control system that can improve performance and maximize use of battery capacity. The authors developed such a power control system with a three-step algorithm. It automatically detects underwater operational states and can limit power, effectively decreasing power consumption by about 15%.
surface piercing propeller boundary element method hydrodynamic characteristics
2011/9/13
Demand for high-speed marine vehicles (HSMVs) is high among both commercial and naval users. It is the duty of the marine vessel’s designer to provide a hull and propulsion system that diminishes drag...
Prospects of 4H-SiC Double Drift Region IMPATT Device as a Photo-Sensitive High-Power Source at 0.7 Terahertz Frequency Regime
4H-SiC Double Drift Region IMPATT Device a Photo-Sensitive High-Power Source 0.7 Terahertz Frequency Regime
2010/12/6
The dynamic performance of wide-bandgap 4H-SiC based double drift region (p++ p n n++) IMPATT diode is simulated for the first time at terahertz frequency (0.7 Terahertz) region. The simulation experi...