原位合成的介孔TiO2-B/锐钛微粒:改善的锂离子电池阳极材料（英文）

Mesoporous TiO2-B/anatase microparticles have been in-situ synthesized from K2Ti2O5 without template. The TiO2-B phase around the particle surface accelerates the diffusion of charges through the interface, while the anatase phase in the core maintains the capacity stability. The heterojunction interface between the main polymorph of anatase and the trace of TiO2-B exhibits promising lithium ion battery performance. This trace of 5%(by mass) TiO2-B determined by Raman spectra brings the first discharge capacity of this material to 247 mA·h·g?1, giving 20%improvement com-pared to the anatase counterpart. Stability testing at 1 C reveals that the capacity maintains at 171 mA·h·g?1, which is better than 162 mA·h·g?1 for single phase anatase or 159 mA·h·g?1 for TiO2-B. The mesoporous TiO2-B/anatase microparticles also show superior rate performance with 100 mA·h·g?1 at 40 C, increased by nearly 25%as compared to pure anatase. This opens a possibility of a general design route, which can be applied to other metal oxide electrode materials for rechargeable batteries and supercapacitors.     

1T-WS2 Nanosheet-Modified Biomass Carbon as Sulfur Host for High-Performance Lithium–Sulfur Batteries

The sluggish sulfur reaction kinetics and fast capacity attenuation still pose great challenges to lithium–sulfur (Li–S) batteries. Herein, tubular carbonl (HPOC) is obtained by carbonization of the cattail fiber. 1T-WS₂@HPOC is prepared by solvothermal method, and their sulfur composite, 1T-WS₂@HPOC/S and HPOC/S as sulfur host composite, is obtained by sulfur melting. The composite materials are characterized by scanning electron microscopy, X-ray diffraction, thermogravimetry, X-ray photoelectron spectroscopy, etc. Results show that 1T-WS₂ grows uniformly on the HPOC substrate and has abundant active sites, which can effectively improve the physicochemical adsorption capacity of S-fixation (76 wt%) and polysulfide. Battery assembly and electrochemical performance tests are conducted for the HPOC/S and 1T-WS₂@HPOC/S composites. Results show that the initial discharge capacity of the 1T-WS₂@HPOC/S positive electrode is 1272 mAh g⁻¹ at 0.1 C, higher than the HPOC/S positive electrode (1025 mAh g⁻¹). 1T-WS₂@HPOC/S maintains a discharge capacity of 695 mAh g⁻¹ after 500 cycles at 0.5 C, with a capacity decay rate of only 0.054% per cycle. With a discharge capacity of 504 mAh g⁻¹ after 400 cycles at 1 C, the Coulomb efficiency is 98.9%. The 1T-WS₂@HPOC/S composites with unique structure and excellent electrochemical performance have broad application prospects in the field of Li–S batteries.     

陶瓷/纤维复合装甲抗弹丸侵彻性能的试验与数值模拟研究

本工作研究了由碳化硼(B4C)/碳纤维(CF)/超高分子量聚乙烯纤维(UHMWPE)组成的复合装甲对抗7.62 mm穿甲燃烧弹的抗侵彻性能.通过实验和数值模拟,系统地研究了陶瓷复合装甲各层对弹丸的作用机理.首先将模拟与实验结果进行比较,验证了模拟方法的可靠性.在此基础上,开展了陶瓷复合装甲的陶瓷面板的材料/厚度数值模拟研究,分别采用氧化铝(Al2 O3)、碳化硅(SiC)、碳化硼(B4 C)作为陶瓷面板,研究了不同厚度陶瓷板的吸能效率,结果表明,以B4 C陶瓷作为面板,当其厚度为10 mm时所得复合装甲的防弹性能最佳.     

用 ActiveX 实现 CAI 功能

ＣＡＩ是教学方法和教学手段进行改革和实践的关键技术．目前,已有许多开发ＣＡＩ的技术．介绍利用ＶＣ＋５．０开发ＡｃｔｉｖｅＸ容器,将具有浏览功能的ＭｉｃｒｔｓｏｆｔＷｅｂ浏览器控件集成到容器中,并使其浏览具有ＣＡＩ内容的ＨＴＭＬ文档,实现ＣＡＩ功能的方法．该方法不仅能实现图文并茂的演示功能和帮助功能,而且还能实现远程ＣＡＩ的功能,同时示范了在ＶＣ＋＋５．０开发环境下的ＣＡＩ开发实例．     

一种湿度控制的改进算法

通过对湿度及其控制方法的分析,提出了一种基于含湿量的湿度控制算法,并分析了该控制算法的特点。     

新型变压吸附技术的开发和应用

简要介绍了新型两段法变压吸附高效气体分离技术开发的背景及意义，详细介绍了该技术在脱碳、提氢、提纯CO、制氧领域中的应用。该技术的开发成功，极大地简化了工艺流程，既节省动力设备购置费、运行费和设备维护费，又大幅提高了装置稳定性、安全性和可靠性。     

包头市污水资源化利用概况

通过对包头市水资源现状和污水排放情况的分析，在满足城市发展要求的前提下，提出包头市实施污水资源化利用的可行性和必要性。污水资源化必将促进城市的环境建设和经济发展。     

Low firing temperature ceramic material for high frequency multilayer chip inductors

The low firing temperature glass-ceramics of the system B₂O₃-P₂O₅-MgO-Al₂O₃-SiO₂ were investigated in the present paper. The effect of the heat-treatment schedule on crystallization and the properties of crystal phases were analyzed. This material has a low dielectric constant and a low dissipation factor and can be co-fired with high conductivity metals such as Au, Ag/Pd, Cu paste at low temperature (below 1000 °C), suggesting that it would be a promising material for high-frequency MLCIs.     

连铸机的联合循环水系统

随着连铸工艺的不断发展,连铸机的供水系统也从最初的开路循环水系统,发展成许多供水系统,包括8°d净环水系统;半闭路软水槽循环水系统;闭路软水循环水系统;二冷水、冲铁皮水浊循环水系统,乃至将软水循环水和浊循环水系统通过换热器联合成为一个综合循环水系统。     

哈萨克斯坦南土尔盖盆地A区块岩性油气藏

哈萨克斯坦南土尔盖盆地A区块处于断陷湖盆缓坡带, 构造圈闭不发育, 寻找岩性-地层油气藏是勘探突破的关键。已有钻井结果显示, A区块岩性油气藏主要位于侏罗系, 其自下而上可分为5套地层：埃巴林组、多尚组、卡拉甘塞组、库姆科尔组和阿克萨布拉克组。通过对侏罗系储集层、烃源岩、储盖组合等方面研究, 认为目的层发育3种类型岩性油气藏：斜坡带前缘砂上倾尖灭型油气藏、水下分流河道孤立砂体型油气藏及河口坝孤立砂体型油气藏, 已发现的A12井油藏属于中孔中渗的斜坡带前缘砂上倾尖灭型油藏, 为油气自生自储和侧向运移共同作用的结果。综合分析油气成藏条件认为, 研究区成藏的主控因素为有效储盖组合。结合多种地质、地球物理勘探方法分析得出, A区块的油气远景区集中分布于区块中部和西侧斜坡。图5表2参19