A stable and catalytically active cathode consisting of homogeneously dispersed nano-socketed Fe–Ni particles has been elegantly fabricated in single-step treatment for solid oxide steam electrolysis cells via the in situ reduction of the Sr2Fe1.3Ni0.2Mo0.5O6 (SFMNi) material in a humidified H2 (3 vol% H2O) atmosphere at 800 °C.

Mobile learning demands real-time transmission of lecture videos to mobile users over wireless networks. However, wireless video streaming is challenging due to the dynamic change of network bandwidths and the variety of mobile devices. In this paper, we present a mobile learning system that incorporates semanticlevel scalable video coding and wireless video streaming. The lecture videos are encoded into different quality levels with different compression ratios. We demonstrate the effectiveness of our mobile learning system with the lecture videos recorded in real classrooms.

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