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The coadsorption of chlorine with oxygen on Ni(110) surface has been investigated by XPS, UPS, AES and work function measurements. The chlorine preadsorption drastically inhibits the further uptake of oxygen. On the contrary, precovered oxygen has hardly any influence on the additional adsorption of chlorine due to the incorporation of precovered oxygen into the subsurface driven by the chlorine coadsorption. ARXPS measurements provide the evidence for this coadsorption model. The thermal desorption of chlorine and oxygen from the coadsorption surface is very similar to that of both individual adsorbates under the same heating conditions, but the desorption temperature of both the adsorbates apparently decreases on the coadsorption surface. The coadsorption and thermodesorption mechanisms are also discussed in detail. 相似文献
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本文研究了一种利用CCD传感器对物体重量进行实时动念测量的方法。在讨论了利用CCD测物体重量的原理的同时,还给出了基于DSP的硬件实现,最后给出了数据处理的过程及算法。 相似文献
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吴建新 《信息安全与通信保密》2005,(6):128-129
互联网彻底改变了我们工作及沟通的方式,但在WAN及Internet应用中用户发现,花费了大量投资购买和租用的通讯线路、网络设备和服务器,由于对于不同应用间的资源分配及资源利用的正当性缺乏管理,使应用系统往往达不到应有的效能。造成这样结果的原因往往是由于网络上娱乐性质的通信超载和员工的不自觉性所造成,不能简单地增加带宽和对网络流量进行简单的管理所能解决的。因此,如何为网络用户提供这样一种操作简便、性能稳定、价格适中、扩展性好的自动化网络流量监测和控制工具,成为一个迫切需要解决的问题。北京伟世盾安信息技术有限公司生… 相似文献
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