连续逆流解离萃取法分离间氯苯胺及对氯苯胺

以萃取酸为连续相，应用填料塔设备对间氯苯胺及对氯苯胺混合物进行连续解离萃取以提纯间氯苯胺。实验考察了不同填料、塔高、停留时间等因素对分离效果的影响，并根据实验数据及成品纯度要求设计了塔的级数，完成了分离试验，分离后间氯苯胺纯度大于99％。     

单盘缠绕机的设计

就生产钢丝缠绕胶管单盘缠绕机的设计，论述了其工作原理、主要性能参数、传动计算和自动上中胶片的设计等。     

导电性塑料的研究进展

本文介绍了导电性塑料的发现、分类、品种、应用、研究重点和发展前景。对导电性高聚物的一般合成方法如链聚合法和分步聚合法、特殊的合成方法如光化学聚合进行了总结，并对共轭高聚物的导电机理作了简单的评述。     

A parametric frequency response method for non-linear time-varying systems

A new parametric frequency response algorithm is introduced to investigate linear and non-linear dynamic systems with time-varying parameters. In the new algorithm the time-varying parameters are regarded as additional inputs of the systems and the non-linear generalised frequency response functions for multi-input-single-output systems are then employed to obtain Zadeh's system functions from a differential equation representation. The parametric frequency response method reveals how the time-varying parameters affect the behaviour of the systems through a time-varying term. The new method can be applied to both linear and non-linear time-varying systems.     

Fractional-order embedding canonical correlation analysis and its applications to multi-view dimensionality reduction and recognition

Due to the noise disturbance and limited number of training samples, within-set and between-set sample covariance matrices in canonical correlation analysis (CCA) usually deviate from the true ones. In this paper, we re-estimate within-set and between-set covariance matrices to reduce the negative effect of this deviation. Specifically, we use the idea of fractional order to respectively correct the eigenvalues and singular values in the corresponding sample covariance matrices, and then construct fractional-order within-set and between-set scatter matrices which can obviously alleviate the problem of the deviation. On this basis, a new approach is proposed to reduce the dimensionality of multi-view data for classification tasks, called fractional-order embedding canonical correlation analysis (FECCA). The proposed method is evaluated on various handwritten numeral, face and object recognition problems. Extensive experimental results on the CENPARMI, UCI, AT&T, AR, and COIL-20 databases show that FECCA is very effective and obviously outperforms the existing joint dimensionality reduction or feature extraction methods in terms of classification accuracy. Moreover, its improvements for recognition rates are statistically significant on most cases below the significance level 0.05.     

Preparation and characterization of a PtRu/C nanocatalyst for direct methanol fuel cells

PtRu/C nanocatalysts were prepared by changing the molar ratio of citric acid to platinum and ruthenium metal salts (CA:PtRu) from 1:1, 2:1, 3:1 to 4:1 using sodium borohydride as a reducing agent. Transmission electron microscopy analysis indicated that well-dispersed smaller PtRu particles (2.6 nm) were obtained when the molar ratio was maintained at 1:1. X-ray diffraction analysis confirmed the formation of PtRu alloy; the atomic percentage of the alloy analyzed by the energy dispersive X-ray spectrum indicated an enrichment of Pt in the nanocatalyst. X-ray photoelectron spectroscopy measurements revealed that 83.34% of Pt and 79.54% of Ru were present in their metallic states. Both the linear sweep voltammetry and chronoamperometric results demonstrated that the 1:1 molar ratio catalyst exhibited a higher methanol oxidation current and a lower poisoning rate among all the other molar ratios catalysts. The CO stripping voltammetry studies showed that the E-TEK catalyst had a relatively higher CO oxidation current than did the 1:1 molar ratio catalyst. Testing of the PtRu/C catalysts at the anode of a direct methanol fuel cell (DMFC) indicated that the in-house PtRu/C nanocatalyst gave a slightly higher performance than did the E-TEK catalyst.     

HLD-001TM甲苯歧化与烷基转移催化剂的工业试验

对中国石油化工股份有限公司上海石油化工研究院研发的高空速、低氢烃比甲苯歧化与烷基转移催化剂(HLD-001~(TM))进行了工业试验。结果表明,该催化剂具有优良的综合催化性能。在反应温度340～365℃,反应压力2.8～3.0 MPa,质量空速2.0～3.0 h~(-1),氢烃分于比3.0～3.7条件下,转化率46%～48%(质量),选择性90%～93%(质量),产物中二甲苯/苯为2.5～3.0(mol),歧化苯冰点不低于5.45℃,达到优级品的指标。     

湿法成型中稳定浆料的制备

为了满足各工业领域对陶瓷材料的需求,人们开发和研制多种适合成型复杂形状的湿法成型技术,湿法成型中最关键的一步是稳定浆料的制备。本文从稳定浆料的制备条件,形成稳定浆料的理论依据以及稳定浆料所具备的流变特性等几个方面,对湿法成型中浆料的制备进行了综述。     

注塑模微机CAD系统

本文介绍了一个微机上运行的注塑模ＣＡＤ系统，此系统主要解决了四个难点，浇注系统设计，冷却系统分析，型腔，型芯的曲面造型设计，装配图和零件工作图的设计绘制，经厂家实际运用证明，该系统使用方便，结果正确，能提高设计效率，降低生产成本。