档案管理信息系统的开发与建设

在分析西北电网有限公司档案管理信息系统建设的历程和存在问题的基础上,介绍了公司新一代档案管理系统的结构模式、系统采用技术和功能特点,并提出未来的发展方向.详细阐述了系统B/S和C/S混合模式架构,8个功能模块及新特点.该系统实现了电子档案从产生、收集整理到查询借阅、保管利用的全程电子化管理,有效地提高了公司档案管理水平和办公自动化水平.     

硼硅对BST薄膜结构和性能的影响

用sol-gel法制备0.5mol/L钛酸锶钡(Ba0.7Sr0.3TiO3)前驱溶液,并在其中加入硼、硅成功地制备了室温下具有优良铁电性质的BSTS薄膜。XRD及DSC分析显示,BSTS薄膜呈现钙钛矿结构。测试结果表明,随着硼、硅的加入量增加,其εr和tgδ明显降低。当硼、硅的加入量小于10mol/L时,薄膜的漏电流比没有加入硼、硅的BST薄膜的低,当硼、硅的加入量大于15mol/L时,薄膜的漏电流比没有加入硼、硅的BST薄膜的高。     

一类无源OLED显示模块在嵌入式系统中的应用

介绍了OLED显示模块的特点及其在ARM核处理器S3C4510B和uClinux嵌入式操作系统下的应用。给出了系统的硬件电路设计。根据OLED模块指令集特点，在uClinux下采用对OLED模块编写用户空间设备驱动程序的方法。实现了终端对OLED的控制。实验表明，采用用户空间驱动程序可以减小操作系统开销、提高系统对外设的响应速度。     

MSM7512B与标准Modem建立连接

探讨MSM7512B遵从ITU-TV.23规范,以主叫和被叫方式与标准Modem（如Hayes的AT指令集兼容的Modem)建立连接的方法和实现过程。     

Single-Crystalline TiO2(B) Nanobelts with Unusual Large Exposed {100} Facets and Enhanced Li-Storage Capacity

The {100} facet of single-crystalline TiO₂(B) is an ideal platform for inserting Li ions, but it is hard to be obtained due to its high surface energy. Here, the single-crystalline TiO₂(B) nanobelts from H₂Ti₃O₇ with nearly 70% {100} facets exposed are synthesized, which significantly enhances Li-storage capacity. The first-principle calculations demonstrate an ab in-plane 2D diffusion through the exposed {100} facets. As a consequence, the nanobelts can significantly accommodate Li ions in LiTiO₂ formula with specific capacity up to 335 mAh g⁻¹, which is in good agreement with the electrochemical characterizations. Coating with conductive and protective poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), the cut-off discharge voltage is as low as 0.5 V, leading to a capacity of 160.7 mAh g⁻¹ after 1500 cycles with a retention rate of 66% at 1C. This work provides a practical strategy to increase the Li-ion capacity and cycle stability by tailoring the crystal orientation and nanostructures.     

基于DS18B20的关联型温度检测系统的设计与实现

针对传统的温度检测系统对于通信基站测温点少、检测实时性和准确性较低的问题。设计了一种基于DS18B20温度传感器关联性模型的温度检测系统,通过建立不同位置测温值的关联模型,实现对温度异变信号的声光报警和自动处理等功能。该系统以DS18B20温度传感器为核心,设计了温度检测电路、数据关联电路、声光报警电路、继电器控制散热电路等模块。运行证明：本系统相对于传统的温度检测方法,系统的精确性和实时性都有明显改善,为通信基站的安全运行提供了可靠保障。     

基于二次B-B插值曲面的等值线图的绘制

介绍了基于二次 B- B插值曲面绘制等值线图的方法。实践表明 ,用这种方法绘制的等值线效果很好 ,它能有效地分析和解决工程问题     

化学因子分析分光光度法在多组分维生素B同时分析中的应用

研究了化学因子分析法在相互有干扰的多组分混合物同时分光光度分析中的应用,并对维生素Ｂ１、Ｂ２、烟酰胺、Ｂ６四组分混合物进行了分析,平均回收率分别为１０１．０％、９９．７％、１００．０％、１００．３％,结果较为理想．     

电子注分析系统

本文简要地说明了电子注分析系统在超高频真空器件设计、研究中的作用及其重要性,并且着重介绍了该系统的构成及其技术、指标等。     

Formation of uniform GaAs multi-atomic steps with 20–30 nm periodicity and related structures on vicinal (111)B planes by MBE

We studied morphology of GaAs surfaces and the transport properties of two-dimensional electron gas (2DEG) on vicinal (111)B planes. Multi-atomic steps (MASs) are found on the vicinal (111)B facet grown by molecular beam epitaxy, which will affect electron transport on the facet. We also studied how the morphology of GaAs epilayers on vicinal (111)B substrates depends on growth conditions, especially on the As₄ flux. The uniformity of MASs on the substrates have been improved and smooth surfaces were obtained when the GaAs was grown with high As₄ flux, providing step periodicity of 20 nm. The channel resistance of the 2DEG perpendicular to the MASs is reduced drastically with this smooth morphology. These findings are valuable not only for fabricating quantum devices on the (111)B facets but also those on the vicinal (111)B substrates.