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超便携笔记本电脑AcerAspireOne重量仅为1千克左右,它采用8GB的SSD固态硬盘,IntelAtomTM处理器N270为整机提供足够的动力支持,同时具备低耗电设计,在提供高性能的同时延长使用时间。AspireOne配备8.9英寸Acer CrystalBrite镜面LED背光屏幕,更高亮度适用于各种复杂环境。 相似文献
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对传统的室内宏蜂窝基站与新型的分布式基站在3G建网成本上进行了详细的分析,并给出了不同应用场景下的成本对比. 相似文献
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近日,曾是传统PC产业黑马和智能手机产业先锋的宏暮和HTC相继发布财报,其中HTC迎来其首季亏损,而宏基更因为连续几个季度的财报不振,其董事长兼CEOSE振堂不得不引咎辞职。 相似文献
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谈到上网本,大家的第一印象恐怕就是中看不中用、反应慢等毛病,而宏基(Acer)在充分考虑到这一系列问题后,终于推出了两款主打实用主义的新品——Aspire One 521与Aspire One 721。 相似文献
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在即将到来的3G网络建设中,快速建网,减少基础设施投资,降低建网综合成本成为3G网络运营商关注的焦点。本文提出3G快速组网的方案——光纤射频远程传送(ORT),对ORT的工作原理、组网性能及应用前景进行了分析。 相似文献
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LU Yang LIU Xiang-guo YU Ying QU He-zhi YANG Shuo NING BO WANG Xiao-ping HAO Dong-yun 《高等学校化学研究》2010,(4):583-590
<正>The development of industrial biotechnology has created an increasing demand for alkaline lipolytic enzymes with functional diversity.In this study,an alkaline soil metagenomic library was constructed to search for new lipolytic enzymes.Two novel gene encoded alkaline esterases(designated as estA and estB) were isolated by functional screening from the library.The estA gene consisted of 834 bp and coded for 277 amino acids with a molecular mass of 29998.Amino acid sequence homology analysis indicates that EstA belongs toα/βhydrolase fold family 4.4(abH4.4),with EstA being the smallest member of that family yet reported.The estB gene consisted of 1185 bp and encoded 394 amino acids with a theoretical molecular mass of 40090.Its conserved domain analysis shows that EstB belongs to the GDSL hydrolase superfamily.Both EstA and EstB exhibit only moderate identity(38%) in amino acid sequence to the known lipolytic enzyme genes in the database.The two genes were respectively expressed in Escherichia coli and the protein products were purified for functional characterization.While the expressed EstA did not exhibit the functional properties that were superior to those of other esterases previously reported,the EstB was stable at temperature up to 45℃and its maximum activity was measured to be 53.6 U/mg at pH=10.Both the enzymes have further enriched the diversity of the lipolytic enzymes database and also appear to be promising biocatalysts for potential biotechnological application. 相似文献
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仅凭自身实力,联想无力拉近与惠普、戴尔和宏基的差距,杨元庆只能把追赶对手的最大希望寄托在跨国收购上.不过,联想有此考虑,它的竞争对手们也明白,当前是抄底的最佳时机 弃购巴西PC厂商!联想在2008年岁尾时发出的最后一声叹息充满遗憾. 2008年12月19日,在业界的美好祝愿中,联想出人意料地对外宣布放弃对巴西最大PC厂商Positivo的收购.大家期待中的联想并购案就此夭折. 相似文献