EPS节能型高保温砌块应用

EPS节能型高保温砌块符合国家产业政策的利国利民的新型高保温产品,具有较强的市场竞争能力.     

可逆电子转移反应循环伏安法的数字模拟

本文对可逆电子转移反应的循环伏安法进行了数字模拟，得到了不同情况下的伏安曲线，讨论了各种动力学参数对电流函数的影响。此外，数字模拟的结果与Ｎｉｃｈｏｌｓｏｎ理论计算的数据进行了比较。     

EPS墙体外保温技术在既有建筑墙体节能改造中的应用

结合工程实例,介绍了采用该技术进行既有建筑墙体节能改造的优越性及方法。     

浅谈应急电源

介绍了UPS不间断电源和EPS应急电源的工作原理,给出了使用应急电源的原则及要点。     

Cementing mechanism of algal crusts from desert area

34-, 17-, 4-, 1.5-year old natural algal crusts were collected from Shapotou Scientific Station of the Chinese Academy of Sciences, 40-day old field and greenhouse artificial algal crusts were in situ developed in the same sandy soil and the same place (37°27′N, 104°57′E). Their different cohesions both against wind force and pressure were measured respectively by a sandy wind-tunnel experiment and a penetrometer. On the basis of these algal crusts, the cementing mechanism was revealed from many subjects and different levels. The results showed that in the indoor artificial crusts with the weakest cohesion bunchy algal filaments were distributed in the surface of the crusts, produced few extracellular polymers (EPS), the binding capacity of the crusts just accomplished by mechanical bundle of algal filaments. For field crusts, most filaments grew toward the deeper layers of algal crusts, secreted much more EPS, and when organic matter content was more than 2.4 times of chlorophyll a, overmuch organic matter (primarily is EPS) began to gather onto the surface of the crusts and formed an organic layer in the relatively lower micro-area, and this made the crust cohesion increase 2.5 times. When the organic layer adsorbed and intercepted amounts of dusts, soil particles and sand grains scattered down from wind, it changed gradually into an inorganic layer in which inorganic matter dominated, and this made the crusts cohesion further enhanced 2–6 times. For crust-building species Microcoleus vaginatus, 88.5% of EPS were the acidic components, 78% were the acidic proteglycan of 380 kD. The uronic acid content accounted for 8% of proteglycan, and their free carboxyls were important sites of binding with metal cations from surrounding matrix.     

硝酸铈对污泥胞外多聚物及污泥颗粒化的影响

研究发现不同质量浓度硝酸铈对活性污泥的比耗氧速率、增长速度、脱氢酶活性及微生物相产生不同程度的影响,质量浓度为50mg／L时对改善污泥性能有较为明显的作用。以普通活性污泥为接种污泥,葡萄糖和乙酸钠为碳源,在两个SBR反应器内对比污泥颗粒化过程。通过监测EPS组分、污泥疏水性、MLSS、SVI、COD、TN和TP,发现硝酸铈可以促进污泥颗粒化过程。稳定后的含铈颗粒污泥同时具有脱氮除磷作用,COD、TN、TP去除率分别达到95％、80％和85％。     

电动汽车EPS电动机非线性补偿算法设计

电动汽车电动助力转向（EPS）电动机在低速或变向运动时,其动态和静态特性存在不同程度的非线性。进行了EPS系统动力学分析和汽车三自由度动力学分析,建立了EPS系统控制结构。针对电动机的低速死区非线性和高速饱和非线性特性,设计了非线性补偿方法,开发了非线性补偿的实现算法和实现规则。设计了实车试验系统,进行了EPS电动机的电压-转速静态特性测试,结果表明：补偿后的非线性特性得到明显改善,有利于消除电动机在速度反向时的运动不连续,避免系统的稳态性能造成额外的稳态误差。对实现EPS系统的高性能和高精度控制、改善系统性能和提高控制质量具有重要的工程应用意义。     

含特殊转向工况的汽车EPS电动机控制策略

电动助力转向(EPS)电动机的控制是EPS系统设计的关键之一.建立了汽车三自由度转向模型和EPS系统动力学模型,设计了EPS助力特性和包含回正过程补偿、紧急避让过程补偿、满载大角度转弯补偿等特殊转向工况的电动机控制策略,利用Matlab/Simulink进行了仿真,与不包含特殊工况补偿的情况进行了性能比较及分析.仿真结果表明,含特殊转向工况的汽车EPS电动机控制策略具有更好的探纵性能和安全性能.这对指导EPS电动机控制策略的开发、功能的增强和优化以及转向操纵安全的提高都具有重要的工程应用意义.     

科技期刊插图处理的协同编辑通用解决方案

从编辑出版流程以及节约成本的角度出发,提出了协同编辑的概念．通过对几种常用插图格式的分析得出,EPS是科技期刊插图的最佳格式．给出了一种通用解决方案．该方案利用虚拟打印技术和CoreIDRAWX3将作者提供的插图转换为EPS格式,以用于科技期刊．方案简单易行,可以节约成本,提高编辑出版工作的效率和科技期刊插图的印刷质量。     

亚甲基兰的生物污泥吸附及胞外聚合物作用

对比研究了活性污泥和厌氧污泥对染料亚甲基兰的吸附性能,并考察了胞外聚合物(EPS)以及外层溶解性胞外聚合物(SEPS)和内层固着性胞外聚合物(BEPS)在此过程中所起的作用.结果表明,活性污泥中的EPS,SEPS,BEPS以及厌氧污泥中的EPS,BEPS对染料哑甲基兰的吸附更符合Langmuir等温式,厌氧污泥中的SEPS则更符合Freundlich 模型.活性污泥和厌氧污泥中SEPS绝对吸附量均大于BEPS的绝对吸附量,分别为14.1倍和5.8倍.但由于单位质量活性污泥和厌氧污泥中BEPS的质量均远大于SEPS,故活性污泥和厌氧污泥EPS对染料亚甲基兰的吸附主要是BEPS的吸附所贡献.