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TECORE公司将为厄立特里亚建设第一个GSM/GPRS网络－－该网络可支持十万用户
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TECORE无线系统公司，新一代无线系统的主要供应商，宣布已经为厄立特里亚电信公司（EriTel）建成了该国第一个无线网络--GSM/GPRS无线网络。EriTel的网络将覆盖首都阿斯马拉市并延伸到周边地区。这个交钥匙工程金额超过1500万美元,包括部署TECORE公司GSM基础的AirCore MSC/VLR（移动交换中心/访问者位置寄存器），预付费系统，SMSC（短信服务中心），GSN（GPRS支持节点），使用AirNet GSM AdaptCell Broadband Software-Defined技术并支持GPRS的基站以及可选择使用AirSite Backhaul FreeTm技术的基站。此外，TECORE还交付了它的计费和顾客服务系统，以单一界面提供多种服务，包括帐目管理、付费记录评定、开立缴费帐单及漫游记录能力等。这使得EriTel可以轻而易举地对集中收费和市场变换做出反应，并提供了立即激活国际漫游服务的能力。
　　为重点改善通讯设施，厄立特里亚政府承诺在全国范围内实施建设移动网络的艰巨规划，并在2004年第一季度开通服务。该国政府认为，这个网络将会鼓励投资、创造就业机会及提高生活水平，同时可以负责传输最新信息—他们需要的就是一个要素丰富、以互联网为中心、GSM/GPRS为基础的移动网络。
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&文件名称: InstrumentationCoreTestRunner
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&&开发工具: Unix_Linux
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&详细说明：This test runner extends the default Instrumentation Test Runner for Embedded Linux.
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&&InstrumentationCoreTestRunner.c
&输入关键字，在本站238万海量源码库中尽情搜索：Composition-tuned ZnO/Zn(x)Cd(1-x)Te core/shell nanowires array with broad spectral absorption from UV to NIR for hydrogen generation.
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2014 Feb 26;6(4):2878-83. doi: 10.1021/am4054332. Epub
2014 Feb 4.Composition-tuned ZnO/Zn(x)Cd(1-x)Te core/shell nanowires array with broad spectral absorption from UV to NIR for hydrogen generation.1, , , , , , , .1National Center for Nanoscience and Technology , Beijing 100190, P. R. China.AbstractFor highly efficient photoelectrodes, the materials used must have both a broad absorption range and large separation efficiency of photogenerated electron-hole pairs. Type II heterostructures with a ternary shell meet these two requirements and thus are recognized as being an ideal materials system for application in photocatalytic hydrogen production. Here, a ZnO/ZnxCd1-xTe core/shell nanowires array with a broad absorption edge from UV (380 nm) to NIR (855 nm) was fabricated via a chemical vapor-deposition method. More importantly, the ZnO/ZnxCd1-xTe core/shell nanowires array are highly single crystalline, and the composition can be continuously tuned by optimizing the deposition temperature, making the design of the desired photocatalyst possible. As expected, the single-crystalline ternary ZnxCd1-xTe shell greatly enhances the charge separation efficiency and prolongs the lifetime of photogenerated charge carriers, which contribute to the high photocatalytic and photoelectrocatalytic activity under light irradiation. In addition, ZnO/ZnxCd1-xTe core/shell structure show remarkable photocatalytic H2-production activity and high H2-production capability because of the synergistic light absorption of the ternary ZnxCd1-xTe shell and the formation of a type II heterostructure at the interface between the ZnO core and ZnxCd1-xTe shell. This work provides a new material platform for the design of highly efficient solar-fuel devices that demonstrate a broad and controllable absorption from the UV to NIR wavelengths. PMID:
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