高压旋喷水泥土桩加固软土地基技术

高压旋喷水泥土桩是一种地基处理新技术，可根据工程需要，通过控制喷射压力、灌浆量、改变提升速度等途径，将原状土喷射搅拌成不同形状的固结桩体．它的质量可以通过桩位、桩径、桩长、桩材及桩的完整性等方面进行控制．该型桩的发展方向应是大直径、高强度和复合型．其基本技术的特点是就地成桩、质量可靠、施工简便和适用范围广．探讨并介绍了高压旋喷水泥土桩的施工技术，其中包括施工方法、施工中的故障处理、桩体的质量控制以及工程质量的检查和试验方法．并给出了工程实例．     

论从专业交易市场走向现代流通企业的发展策略

在对我国目前专业交易市场现状及未来发展趋势认真分析的基础上,提出以现有专业交易市场为基础,通过合理利用与整合相关资源,发展协同商务,建立全程供应链系统,实现专业交易市场向现代流通企业的转变,以更好的发挥专业交易市场在市场经济建设中的重要作用。     

长沙市市区近5年酸雨变化趋势及相关因素分析

长沙市酸雨出现较早，近年来逐渐加重。2004年酸雨频率已达90％以上，pH年均值在4．0以下。文章以2000-2005年上半年的长沙市降水统计数据为基础，分析了酸雨的变化趋势，为长沙市酸雨的有效控制提供了可靠依据。     

热轧生产线换辊电气控制系统的改进

介绍了唐钢1 700 mm热连轧轧机换辊系统在硬件和软件方面的改造情况。描述了换辊功能的工艺概况、生产中的作用和在手动等三种操作模式下的工作过程;详细说明了由于生产环境造成的问题及针对此问题在硬件和软件方面进行的改造情况。实际运行结果表明,通过对换辊功能的改造,换辊系统比改造前在可靠性和可操作性等方面有了很大的提高。     

Biomimetic Color Changing Anisotropic Soft Actuators with Integrated Metal Nanowire Percolation Network Transparent Heaters for Soft Robotics

To add more functionalities and overcome the limitation in conventional soft robots, highly anisotropic soft actuators with color shifting function during actuation is demonstrated for the first time. The electrothermally operating soft actuators with installed transparent metal nanowire percolation network heater allow easy programming of their actuation direction and instantaneous visualization of temperature changes through color change. Due to the unique direction dependent coefficient of thermal expansion mismatch, the suggested actuator demonstrates a highly anisotropic and reversible behavior with very large bending curvature (2.5 cm^?1) at considerably low temperature (≈40 °C) compared to the previously reported electrothermal soft actuators. The mild operating heat condition required for the maximum curvature enables the superior long‐term stability during more than 10 000 operating cycles. Also, the optical transparency of the polymer bilayer and metal nanowire percolation network heater allow the incorporation of the thermochromic pigments to fabricate color‐shifting actuators. As a proof‐of‐concept, various color‐shifting biomimetic soft robots such as color‐shifting blooming flower, fluttering butterfly, and color‐shifting twining tendril are demonstrated. The developed color‐shifting anisotropic soft actuator is expected to open new application fields and functionalities overcoming the limitation of current soft robots.     

当代德育由他律到自律的转向研究

道德教育的最高目标是使受教育者学会自律。因此,不断提高受教育者的道德主体意识和道德自律意识,加强自律德育逐渐成为德育研究的重点。应明确当代德育由他律到自律转向的应然性,从社会、学校、家庭和受教育者个人四个方面共同努力,最终实现道德由他律到自律的转向。     

高校科技工作如何面向市场经济

随着“科教兴国”战略大幕的拉开,高校成为国家创新体系的重要组成部分,其科技工作应该适应新形势的新要求,求变创新,融入市场经济,迎接知识经济新时代的到来。     

低温发泡挤出中快速换网装置的应用与研究

阐述了快速换网装置在该领域应用过程中的特殊设计结构和使用方法。     

An Interphase with Changing Properties and the Mechanism of Deformation in Particulate-Filled Polymers

The comparison of the results of calculations based on experimental data with those derived from a simple, two phase, elastic model proved the existence of a hard interphase in particulate-filled composites. Moreover, beside elastic properties, also other mechanical characteristics of the interphase, including yield stress, are different from those of the components. An energy analysis showed that the relationship between the yield stress of the matrix and the debonding stress determines the mechanism of deformation. Strong adhesion leads to matrix yielding, while decreased interaction leads to debonding, with a corresponding dependence of composite yield stress on filler content. Particle size, interaction and interphase properties determine the stress necessary to separate the matrix/filler interface. The thickness of the interphase depends on the strength of the interaction; a linear correlation was found between the size of the interlayer and the reversible work of adhesion.