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信息化是当今世界发展的潮流,积极推进国家信息化是我国国民经济和社会发展的重要战略举措,而教育信息化是国家信息化的重要基础。在信息网络高速发展的今天,越来越多的信息均以数字形式进行交换和管理。伴随着智能技术的高速发展和计算机应用的普遍推广,智能卡一卡通在校园中已经广泛推广使用;而将智能卡技术和手机SIM卡技术进行结合,手机支付技术的出现,则有效整合无线通信、智能卡应用,大大增加了使用者的便利性,快速的向传统的“校园一卡通”领域渗透。“校园手机一卡通”取代传统的智能卡校园一卡通将是一种趋势。 相似文献
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The effect of CaF2-doped ZrO2 catalyst for the synthesis of dimethyl carbonate （DMC） was studied by X-ray diffraction （XRD）, CO2-temperature programmed desorption （TPD）, Raman spectra, and X-ray photoelectron spectroscopy （XPS）. Catalytic performance was evaluated in the bath and distillation reactors. Results showed that the CaF2/ZrO2 catalysts had activity and stability for DMC synthesis. 相似文献
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一、引言
＂创新是一个民族进步的灵魂,是国家兴旺发达的不竭动力＂。因此,走教育创新之路,实施创新教育工程,是经济社会发展的内在要求。一个缺少科学储备和创新能力的国家,不可能持久繁荣。会计的教学工作必须与时俱进,在创新教学理念的指导下,培养出具有一定创新意识、创新思维、 相似文献
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"Hello, I'm Shelley. How are you today? Nice to see you."
"Fine, thank you. Nice to see you, too."
深冬时节,卢氏县石川镇马耳岩小学五年级的学生和远在万里之外的 Shelley老师如约"上课",师生互动亲切流畅,这是该校引... 相似文献
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Gas chromatography （GC） analysis of sulfer dioxide is challenging because SO2 is a highly mobile and chemically active molecule. For the conventional GC method with flame photometric detector （FPD） and direct-injection, it is often ineffective particularly when the SO2 level is as low as on the trace level. In this paper, a modified GC system integrated with an adsorption-desorption device was developed to detect the trace SO2 impurity in H2 fuel. Adsorbent GDX-502 is used in the adsorber to adsorb/collect SO2 from the sample gas and desorb/release it in a concentrated flow so that the conventional GC at downstream could detect it with an acceptable accuracy. 相似文献
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