Preparation of double-doped BaCeO3 and its application in the synthesis of ammonia at atmospheric pressure

Perovskite-type oxides BaCe_0.90Sm_0.10O_3–δ (BCS) and BaCe_0.80Gd_0.10Sm_0.10O_3–δ (BCGS) were synthesized by the sol–gel method and characterized by thermal analysis (TG-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Using the sintered samples as solid electrolytes and silver–palladium alloy as electrodes, ammonia was synthesized from nitrogen and hydrogen at atmospheric pressure in a solid-state proton-conducting cell reactor. The maximum rate of production of ammonia was 5.82 × 10^–9 mols^–1 cm^–2.     

PC显卡急需解决的HDCP兼容性问题

HDMI、DVI、DisplayPort等高清媒体内事传输的版权保护机制HDcP（High—BandwidthDigitalContentProtection）由好莱坞和英特尔（Intel）共同开发,用于防止数据通过接口传输时发生的非法拷贝和获取。这种加密安全措施虽然能在一定程度上防止盗版,但在实际应用中却因为自身验证机制的缺陷给消费者带来了无数烦恼,其中最常见的是源端和接收端之间的“握手问题”。相关厂商在技术上提出了各种设计和测试手段来避免此类兼容性问题的发生,但目前似乎在实际产品,尤其是PC显卡上,仍频繁出现。     

Linux下聊天工具Ekiga的研究与优化

自从HTPC出现以来,就受到了大家的欢迎,很多人放弃了传统的家庭影院而选择了HTPC.Ekiga就是HTPC的一个重要组成部分.本次任务就是分析研究Ekiga开源项目,为龙芯PC移植聊天工具程序.通过阅读Ekiga代码及文档,分析大体架构,移植到龙芯PC上,并进行适当的优化创新,来提高软件的性能,如图像压缩优化,裁减一些暂时不需要的功能等.最后,Ekiga在龙芯Pc上运行稳定,并且提出了一些创新性优化建议.     

Preparation of double-doped BaCeO3 and its application in the synthesis of ammonia at atmospheric pressure

Perovskite-type oxides BaCe_0.90Sm_0.10O_3−δ (BCS) and BaCe_0.80Gd_0.10Sm_0.10O_3−δ (BCGS) were synthesized by the sol–gel method and characterized by thermal analysis (TG-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Using the sintered samples as solid electrolytes and silver–palladium alloy as electrodes, ammonia was synthesized from nitrogen and hydrogen at atmospheric pressure in a solid-state proton-conducting cell reactor. The maximum rate of production of ammonia was 5.82×10⁻⁹ mol s⁻¹ cm⁻².     

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《我是传奇》I Am Legend；华纳的“阳谋”；SONY HTPC；未来是无线的世界；HTPC的新搭档