两套过滤器反冲洗程序并行解决方案

该反冲洗系统是以艾默生DeltaV为控制系统,采用SFC（Sequential FunctionChart）顺序控制功能进行组态设计。介绍了＇过滤器反冲洗顺控流程,包含反冲洗联锁、反冲洗间隔时间、反冲洗时间、反冲洗跳过等,能提供两套过滤器反冲洗程序并行解决方案。     

Effect of Co2+, Ni2+, Cu2+, or Zn2+ on properties of polyaniline nanoparticles

Uniform polyaniline (PANI) nanoparticles with typical sizes of about 50 nm were electropolymerized on indium tin oxide surfaces in the presence of Co²⁺, Ni²⁺, Cu²⁺, or Zn²⁺. According to shaping theory, we first suggest the reason forming PANI spherical particles. Their conductivity, UV‐vis spectra, FTIR spectra, X‐ray diffraction, and thermogravimetric analysis were investigated. The conductivities and crystallinity of PANI doped with these ions are higher than those of PANI doped with HCl (PANI/HCl). Both UV‐vis absorption spectra and FTIR spectra indicate the interactions between Co²⁺, Ni²⁺, Cu²⁺, or Zn²⁺ and PANI chains. TG analysis also shows that the thermal stability of PANI doped by Co²⁺, Ni²⁺, Cu²⁺, or Zn²⁺ is lower than that of PANI/HCl. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007     

Enhancing textile ink-jet printing with chitosan

Following on from previous research, the possibility of using chitosan in preparing the pretreatment print paste for textile ink-jet printing was investigated but the final colour was not as good as expected. In this study, chitosan was applied separately on cotton fabric for ink-jet printing. A two-bath method was proposed and it was confirmed that a better colour yield was achieved with this method. However, the use of chitosan reduced the tensile strength of the ink-jet printed fabric slightly.     

基于组合赋权的湖泊健康评价物元分析模型

湖泊生态系统的健康是人与自然和谐相处及可持续发展理念的重要体现。通过建立湖泊健康评价物元分析模型,并改进其指标权重的计算,以离差平方和准则将层次分析法、熵值法及主成分分析法3种赋权方法取得的权重结合得到最优组合赋权,应用到某地5个湖泊进行湖泊健康评价。根据当地湖泊具体情况,选取12个详细指标建立评价体系与评价标准,通过模型计算得出结果显示5个湖泊中4个湖泊评价结果为优,一个评价结果为良,湖泊总体健康状况良好。因此该模型用于湖泊健康评价是非常有效的。     

电厂电气运行中常见故障分析及其应对措施探讨

为了保证电厂的生产效率,必须要分析电气的运行特征,确定电气故障发生的原因,综合考虑多方面因素,选择切实可行的措施解决问题。简要分析了电厂电气运行常见故障发生原因,并提出了相应的解决措施。     

作战文书关键信息抽取方法*

作战文书关键信息抽取是实现自动标图系统的关键。现有研究多以文书处理流程设计为主,未深入分析军标用法,信息抽取不完整。为完整提取信息,提出了基于分词处理与语义角色标注（SRL）相结合的文书关键信息抽取方法,实验证明方法有效、可行。基于文中方法所设计的信息抽取系统,已在某集团军内推广、应用。     

Spinning and drawing properties of ultrahigh‐molecular‐weight polyethylene fibers prepared at varying concentrations and temperatures

The concentrations and temperatures of ultrahigh‐molecular‐weight polyethylene (UHMWPE) gel solutions exhibited a significant influence on their rheological and spinning properties. The shear viscosities of UHMWPE solutions increased consistently with increasing concentrations at a constant temperature above 80°C. Tremendously high shear viscosities of UHMWPE gel solutions were found as the temperatures reached 120–140°C, at which their shear viscosity values approached the maximum. The spinnable solutions are those gel solutions with optimum shear viscosities and relatively good homogeneity in nature. Moreover, the gel solution concentrations and spinning temperatures exhibited a significant influence on the drawability and microstructure of the as‐spun fibers. At each spinning temperature, the achievable draw ratios obtained for as‐spun fibers prepared near the optimum concentration are significantly higher than those of as‐spun fibers prepared at other concentrations. The critical draw ratio of the as‐spun fiber prepared at the optimum concentration approached a maximum value, as the spinning temperature reached the optimum value of 150°C. Further investigations indicated that the best orientation of the precursors of shish‐kebab‐like entities, birefringence, crystallinity, thermal and tensile properties were always accompanied with the as‐spun fiber prepared at the optimum concentration and temperature. Similar to those found for the as‐spun fibers, the birefringence and tensile properties of the draw fibers prepared at the optimum condition were always higher than those of drawn fibers prepared at other conditions but stretched to the same draw ratio. Possible mechanisms accounting for these interesting phenomena are proposed.     

对《公司法司法解释（三）》（征求意见稿）第二、三条的解读和疑问

在最高人民法院<公司法司法解释(三)>(征求意见稿)中,其第一部分"关于设立公司的民事责任"一直是理论界所争议的热点.结合该解释部分的第二、三条的规定,从法理角度入手,发起人在设立公司的过程中所承担的责任应当进行法价值的解读与思考.     

视觉导航机器人三维场景重建研究

针对自主导航机器人在室外中的立体视觉,应用了一种基于置信点扩展的三维重建的方法。该方法改进了归一化交叉相关算法,由视差空间图寻找视差空间中的置信点并进行表面跟踪,并用计算亚象素视差和中值滤波的办法得到视差图,最后使用滚球算法对从视差图中得到的点云数据进行三角化从而进行地形重建。实验结果表明,所使用匹配方法优于单一的归一化交叉相关方法,有着较强的鲁棒性,重建的地形效果较为理想。     

生物造粒流化床中颗粒污泥的物理性质及破碎与恢复特性研究

通过两套生物造粒流化床试验装置的并联和串联运行,运用摄影与图像分析、颗粒静沉和密度分析等方法,研究了流化床中颗粒污泥的物理性质及破碎与恢复特性.在作为一级柱(接受人工配置污水)运行的过程中,流化床主要经历了颗粒成长;在作为二级柱(接受一级柱出水)运行的过程中,流化床主要经历了颗粒破碎.试验结果表明,在多次轮回切换工作的过程中,流化床中的颗粒污泥具有动态稳定性,破碎的颗粒很容易得到恢复.颗粒污泥的有效密度随粒径而变化的趋势不明显,粒径-密度关系在双对数坐标图上始终处于同一领域,且远高于常规絮凝体的密度,表明流化床中形成的颗粒污泥具有密实的构造.