草酸氧钛锶电流变体的制备及性能

利用"水解—共沉淀"法合成草酸氧钛锶(STO)电流变颗粒相材料,通过扫描电镜、X射线能谱仪分析了颗粒相的形貌、结构。通过对草酸氧钛锶电流变体的流变性能进行测试。测试结果表明,草酸氧钛锶电流变体具有较高的电流变效应,良好的温度稳定性和抗沉降性能。     

ERF/MRF装置在机械工程中的应用 (Ⅱ)

在分析电／磁流变液装置工作模式的基础上，对近10年来电／磁流变液装置及这些装置在机械工程领域的应用进行分类和全面综述。对其研究存在的问题及应用前景进行了展望。     

大粒径电流变液光透过率变化的实验研究

测量了几种大粒径电流变液(ERF)样品在施加交、直流电场前后光透过率的改变。通过对较大粒径的ERF光透过率变化的对比分析，取得了ERF光透过率的有价值的数据。数据表明：质量体积比为0．1％的TiO2和Si油组成的ERF光透过率的改变最高可达26％；且粒径越小，光透过率改变越大。实验表明：大粒径ERF光透过率的改变，同液体浓度、粒径大小以及颗粒对光的吸收率关系密切。     

电流变液体平板缝隙阀式流的研究

电流变阀类装置在轴向压力作用下的缝隙流动方式是电流变液的主要工作状况之一。本文以理论分析为基础，对电流变液体的缝隙流进行深入研究，从而建立其流动模型，并以试验为手段对流动模型的参数确定方法进行完整的描述。     

Experimental Study on Electrorheological Performance of a Composite Material

By using SrTiO3/PANI as a dispersed phase and silicone oil as a dispersion medium,the rheological characteristic of the dispersion medium under an electric field and the ERF performances of the mixture of Sr-TiO3/PANI composite particles and silicone oil under different dispersed phase consistencies and diffetent medium viscosities have been investigated.The measurements of the rheological characteristic,that is the shear stress of ERF,under shearing flow were performed with a Couette-type theometer manufactured by HAAKE.It is proved that the rheological characteristic of the dispersion medium follows Newtonian fluid viscosity law and the ERF rheological characteristic of the mixture of the dispersion medium and dispersed phase obeys Bingham fluid model under electric field.The experimental result shows that the effects of different phase consistencies and different dispersion medium viscosities on ERF perfomances are great.The testing expressions of shear stress vs.electric field under different conditions have been obtained by oplynomial fit,which is the theory foundation of application in engineering.     

ERF/MRF装置在机械工程中的应用(上)

在分析电／磁流变液装置工作模式的基础上,对近10年来电／磁流变液装置以及这些装置在机械工程领域的应用进行分类和全面综述,对其研究存在的问题及应用前景进行了展望。     

Development of Multicolor Flow Cytometry Calibration Standards: Assignment of Equivalent Reference Fluorophores (ERF) Unit

A procedure is described for assigning the number of equivalent reference fluorophores (ERF) values to microspheres labeled with a fluorophore designed to produce a fluorescence response in a given fluorescence channel of a multicolor flow cytometer. A fluorimeter was calibrated by a series of solutions of the reference fluorophores. The fluorimeter was used to obtain the microsphere fluorescence intensity, and a multicolor flow cytometer was used to obtain the microsphere concentration. The microsphere fluorescence intensity and the concentration were used to obtain the value of ERF for each model microsphere calibration standard. The procedure is described in detail only for microspheres with allophycocyanin (APC) immobilized on the surface. ERF values were also determined for microsphere calibrators for three other fluorescence channels: fluorescein isothiocyanate (FITC), phycoerythrin (PE), and Pacific Blue(PB). The four model microsphere calibrators provide a one point calibration for the four channels of a flow cytometer. By using software controls and changing the photomultiplier voltages, it is possible to obtain a multipoint calibration for each fluorescence channel using each microsphere calibrator.