等通道侧向挤压技术的研究

等通道侧向挤压技术(ECAE)是提高合金塑性、改善组织性能的一种重要途径,对提高后续成形加工质量有重要作用。本文论述了等通道侧向挤压的原理及工业应用,描述了ECAE挤压过程,对ECAE过程中的挤压路径、挤压角度、挤压速度、挤压温度等工艺参数对组织性能的影响做了详细的分析。     

Microfluidic fuel cells: A review

A microfluidic fuel cell is defined as a fuel cell with fluid delivery and removal, reaction sites and electrode structures all confined to a microfluidic channel. Microfluidic fuel cells typically operate in a co-laminar flow configuration without a physical barrier, such as a membrane, to separate the anode and the cathode. This review article summarizes the development of microfluidic fuel cell technology, from the invention in 2002 until present, with emphasis on theory, fabrication, unit cell development, performance achievements, design considerations, and scale-up options. The main challenges associated with the current status of the technology are provided along with suggested directions for further research and development. Moreover, microfluidic fuel cell architectures show great potential for integration with biofuel cell technology. This review therefore includes microfluidic biofuel cell developments to date and presents opportunities for future work in this multi-disciplinary field.     

快速换线

为了满足客户多品种小批量及时供货的均衡生产需求，机器设备准备和生产线转换必须在尽可能短的时间内完成，才能在日渐激烈的市场经济环境中生存。描述了快速换线的原理和基础，说明了如何将这些原理分四阶段运用于生产线转换过程中，并介绍了使用PERT工具缩短换线时间。     

建材专用聚氯乙烯树脂的聚合技术

综述了高表观密度聚氯乙烯（ＰＶＣ）建材专用树脂的主要聚合工艺，并给出了若干聚合配方实例。     

Heteroepitaxial technologies of III–V on Si

Many kinds of heteroepitaxial technologies to improve the quality of III–V on Si are discussed. Surface cleaning and preparation for epitaxial growth, initial interfacial buffer layers between the substrate and the film, many kinds of intermediate layers such as strained layer super lattice (SLS) inserted in the films, low substrate temperature growth and thermal treatments during and after film growth are reviewed. Defect passivation and growth on the patterned substrates are also discussed. Among these methods, essential processes are proposed to evaluate their effectiveness for the defect reduction.     

全封离式低,中功率CO2激光器

本文回顾了过去十年来封离CO_2激光器使用射频(RF)激发技术方面的进展,并讨论了这一技术现状以及技术与市场的挑战。     

高分子表面活性剂研究进展

本文综述了近十余年来通过表面活性单体聚合、亲水／疏水性单体共聚合及大分子化学反应三大类方法制备的新型高分子表面活性剂的结构和表面活性。已有的研究结果表明，一种单体均聚或不同种类单体嵌段、接枝、无规共聚，为合成具有指定结构和预期性能的高分子表面活性剂提供了巨大的可能性和选择性。     

水基压裂液添加剂的应用与评价

本文综述水基压裂液稠化剂、交联剂、降滤失剂、破胶剂、粘土稳定剂、助排剂等主要添加剂在我国的研究、应用性能与评价，简要介绍了其它各种添加剂。     

世纪之交对调压器发展的回顾和展望

回顾了建国五十年来在调压器设计、制造等方面取得的技术成果，并对进入２１世纪后各种调压器的发展趋势作了展望。