TMS320F206与TLC320AD50C接口电路的设计

介绍了TI公司数字信号处理器TMS320F206的同步串行接口的特点，及∑-△型A／D、D／A转换芯片TLC320AD50C的结构和通信方式，详细叙述了两者的接口电路、软件设计方法。     

基于LabWindows/CVI的计算机图形动态模拟技术

计算机图形动态模拟是动态测试CAT系统的重要组成部分，本文提出了利用Labwindows/CVI实现动态模拟的基本原理与方法，并给出了拖拉机动态测试系统中仿真控制的实例，动态模拟功能设计成为相对独立的模块，有利于实现测试系统的自动化监控和操纵。     

汽气共生热电气联产技术的研究

本文介绍了一种汽气共生热电气三联产新工艺．该工艺是以现有循环流化床技术为基础，集燃烧和气化工艺于一体，能同时产生民用煤气、蒸汽、电力．在小型热态试验以架上进行的一系列试验已成功地证实了该技术的可行性．在此基础上，一台蒸汽产量为７５ｔ／ｈ的热电气三联产装置已完成设计，正在实施之中．     

粉体气力输送时弯管的阻力特性及计算方法研究

本文首先综述分析了国内外对不同弯曲曲率半径及角度弯管的阻力特性研究，然后结合作者在多相流动试验台上对４５°、９０°、１１０°、１５０°角度及Ｒ／Ｄ＝２、２．５和３所进行的不同试验结果，采用多变量回归分析法得出适合于计算不同曲率半径和角度的弯管局部阻力系数通用公式，其计算结果与试验值较吻合．     

赣南钨矿山资源状况调查与思考

通过赣南钨矿山资源调查,反映钨矿山资源状况不容乐观。据地质报告中统计,赣南累计探明WO3储量149.98万t,其中上平衡表113.67万t,而保有储量仅有46.7万t;国有钨矿山保有储量26.4万t,可利用的储量10.4万t,可服务年限大都在10a以下。因此,建议尽快对赣南的国有钨矿山开展新一轮的地质找矿,寻找新的接替基地,控制钨矿产量,对尾砂综合回收和利用。     

Ti/NiCu/Ag and Al/NiCu/Ag thin film deposited on positive temperature coefficient (PTC) thermistor by direct current magnetron sputtering

Metallization of positive temperature coefficient (PTC) thermistors deposited by direct current magnetron sputtering has been investigated. Two kinds of multilayer thin films, namely Ti/NiCu/Ag and Al/NiCu/Ag, are proposed as electrode materials. Conventional NiCr/Ag thin film serves as reference electrode in the experiment. Experimental results show that the newly proposed electrodes exhibit good performance including low ohmic contact, firm adhesion, fine solderability and stability. The surface resistances at room temperature of Ti/NiCu/Ag and Al/NiCu/Ag PTC range from 4.3 to 6.2 Ω, and they change little in moisture condition. The average tensile strength is 6.3 Mpa, which provides firm adhesion between electrode and substrate. At solderability test, the new electrodes can withstand the soakage of lead-free solder at 350 °C for 5 s and the properties remain stable after high temperature treatment.     

Study on the slurrying and rheological properties of coal–oilfield wastewater–slurry

In this study, oilfield wastewater (OWW) was used to prepare coal–oilfield wastewater–slurry (COWS), and the apparent viscosity, solid concentration, and rheological curve were studied. Compared with original coal–water–slurry (CWS), the maximum solid concentration of COWS increased, and the viscosity decreased; therefore, the slurrying ability of the coal slurry was improved with the use of OWW. However, although the oil in OWW promoted the slurrying ability of the coal slurry, its effectiveness was insufficient, and a chemical additive was still needed to obtain a coal slurry with enhanced slurrying ability. Both COWS and CWS exhibited shear-thinning behavior, and the rheological index value of COWS was lower, which indicated that pseudoplasticity of COWS was more obvious, and OWW improved the rheological properties of coal slurry.     

萃取法处理含酚废水的研究进展

介绍了液-液萃取、膜萃取和液膜萃取3种萃取处理含酚废水方法,叙述了它们的原理、特性、工艺以及应用优势和存在问题。认为高效、低毒、溶解度小、廉价萃取剂的开发,多种萃取剂混合协同作用的机理研究对提升整个萃取效率起关键作用;膜萃取应从膜材料着手,加强制备廉价、高通量的膜组件;并着力研究膜溶胀和膜污染的机理和控制方法;液膜法目前尚缺乏大规模工业化应用实例,如何提升其稳定性还需进一步的研究。     

琶洲PZB1401项目Kalzip直立锁边金属屋面系统及屋面绿化

广州琶洲PZB1401项目中庭会展厅上空的双坡屋面,采用Kalzip直立锁边铝镁锰合金屋面系统及屋面绿化,各构造层次如65/400型直立锁边铝镁锰合金屋面板等,均选用了优质、经济、环保、自重轻、使用寿命长的材料;对屋脊、山墙、檐口等节点进行了精心设计及施工,成功地解决了屋面防水防渗等问题。