论绿色化学清洗

本文界定了绿色化学清洗的概念,对绿色阻垢剂、绿色清洗剂、绿色缓蚀剂和废液处理等进行了全面综述,讨论了绿色化学清洗的实施和评价.     

基于WSN的精准养牛业智能决策支持系统设计

准确及时地获取牛群的身体变化情况是保证牛群生存环境舒适度的基本前提。在对养牛业监测系统和无线传感网络深入了解的情况下,开发了以无线传感网络为基础的精准养牛业系统。按照标准生产化的要求,系统的总体架构分为感知层、传输层和应用层。并根据总体架构的层次模型设计了相应的软件和硬件。系统有效地利用贝叶斯网络智能决策支持系统建立模型,结合无线传感网络收集牛酮体的数据,进行相应的环境设置,让牛群的生存环境更加舒适。     

氯化锂－水吸附式再循环型空调制冷系统性能研究

对氯化锂－水吸附式空调系统在再循环运行方式下的性能进行了模拟。分析了再生温度、热交换器效率及蒸发冷却器效率对性能的影响。与开式通风型空调制冷系统的制冷性能相比，再循环型空调制冷系统的制冷能力较大，但性能系数ＣＯＰ较小     

轻型高效精馏塔的计算机辅助设计

论述了在Win9x操作环境下，用Visual Baisc 6.0可视化语言设计界面，用Microsoft Access建立数据库，用Auto CAD VBA编辑绘图程序，以Auto CAD作为平台，开发设计轻型高效精馏塔辅助设计软件。通过对实际设计结果的检验与试用，该软件具有良好的用户界面、人机对活功能和图形功能，使用简单方便，输入初始条件即可设计并绘制出塔结构图。     

腐植酸类物质凝聚及沉淀特性的研究

通过对不同产地，不同提取方法获得的煤炭腐植酸和经过生物发酵人工合成的生化黄腐酸分别进行铝离子絮凝实验和酸化沉淀实验，发现煤炭腐植酸、腐植酸盐、棕惰酸、黄腐酸都同时具有被铝离子定量絮凝和在酸性条件下定量沉淀的特性，这类物质具有极其相近的化学特性。生化黄腐酸在上述两方面显示出与煤炭腐植酸十分不同的特性。     

EPDM/PP热塑性弹性体反应控制的研究

对EPDM／PPTPV的反应控制及反应控制与性能的关系进行了研究。结果表明，过氧化物(VD)，酚醛树脂(VP)，硫黄(Vs)体系均适宜作EPDM—E／PPTPV的硫化体系，而VD硫化体系在交联EPDM—D／PPTPV时有较快的硫化速度。TPV的反应速度随ENB含量、乙烯含量、DCP用量的增加而加快，也随反应温度和转速的提高而加快。在研究范围内，由反应温度引起的速度对力学性能的贡献最大，其次为转速引起的速度，再次为交联剂引起的速度，且3因素引起的速度与拉伸强度和拉断伸长率之间有最佳值。     

Heat treatment of silica-fiber-reinforced BN-Si<Subscript>3</Subscript>N<Subscript>4</Subscript> matrix composite

A new wave-transparent composite reinforced by silica fibers with a hybrid matrix comprising BN and Si₃N₄ was prepared by precursor infiltration and pyrolysis, and it was heat-treated at elevated temperatures. The variations of the composite during heat treatments were characterized and investigated by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The as-received composite exhibits good mechanical properties, and it is almost amorphous. When treated at 1600°C, it turned brittle, and silica fibers in it were fused; the composite showed a good crystalline form. When treated at 2100°C, the composite broke into pieces, and the composition showed only BN. Si₃N₄ was decomposed, and silica fibers were volatilized. The presence of BN probably affected the phase transitions of silica fibers. __________ Translated from Novye Ogneupory, No. 8, pp. 49–52, August 2007.     

国内环氧丙烷的现状及发展

概述了国内外环氧丙烷的氯醇法、共氧化法和直接氧化法3种主要生产工艺及其特点,介绍了国内环氧丙烷产业从创建到技术引进、吸收和自主创建的发展过程及主要生产企业、产能和近期的主要市场需求,预测了国内外环氧丙烷的发展趋势。     

Morphology and properties of blends of polypropylene with ethylene-propylene rubber

Great attention has been paid to the toughening of isotactic polypropylene (PP) in recent years in order to make full use of this plastic. This paper presents the results of our study on the compatibility of PP with ethylene-propylene-diene rubber (EPT), polybutadiene rubber (PB) or styrene-butadiene rubber (SBR) through characterization of the blends' morphology, and on. the morphology and properties of binary blends of PP with EPT (EPT/PP) and ternary blends of PP, EPT, and polyethylene (PE) (EPT/PE/PP). Morphological structure of solution blends and the great improvement in low-temperature impact strength and other properties of the mechanical blends have shown the difference among EPT, PB, and SBR in compatibility with PP, the effectiveness of using EPT as PP's toughening agent, and the effect of EPT on EPT/PP blend as both toughening agent and compatibilizer. Addition of EPT to EPT/PP made interesting changes in morphology but no effect on properties was observed.     

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。