超细碳酸钙研磨及分散剂的选择

介绍了高速涂布对研磨碳酸钙(GCC)的要求、超细碳酸钙的研磨工艺流程,论述了在碳酸钙研磨中分散剂的选择。     

重钙超细微粉的制备及应用研究

研究了两种类型重质碳酸钙超细微粉的制备及其在涂布纸中的应用。试验结果表明：使用圆盘磨两段干磨、搅拌磨湿式超细磨制取的重钙超细微粉，粒度可达－２μｍ≥９０％；用于涂布纸生产可以取代优等硫酸钡，是较为理想的刮刀涂布白色颜料     

重质碳酸钙颗粒分散原理及分散性能评价

本文综合重质碳酸钙颗粒团聚机理,分散稳定机理及分散效果评价方法,提出产生团聚的三个力的计算方法,并提出稳定过程的空间位阻机理的不确定性原因,最后提出微观和宏观结合的分散稳定评价方法。     

一种彩色喷墨印刷纸的开发

介绍了在高速纸机上开发一种彩色喷墨印刷纸,通过纸张表面处理提高彩色喷墨纸印刷效果的几个重要过程,主要包含有市场调查、实验室开发、纸机验证等。     

高细度研磨碳酸钙替代高岭土的可行性研究

实验对加添了不同质量比例的高细度研磨碳酸钙（GCC）的单次涂布铜版纸的使用性能进行了比较,结果表明,高细度GCC不仅可以替代部分高岭土来降低生产成本,而且可提高纸张的拉毛强度、白度等。     

基于AVR单片机的多功能电源设计

针对嵌入式系统中存在多种不同供电电压的特点,利用AVR Butterfly提供的丰富的硬件接口资源控制一个有反馈的稳压电源,用C语言调用GCC设计软件程序,设计一种能够适用于多种不同嵌入式系统的智能电源,能够提供多种不同的输出电压,并且能够模拟多种不同电源供电情况,方便测试目标系统的稳定性和可靠性.在实际测试中,该电源能够模拟电源掉电等嵌入式系统常遇到的电源故障,并能对不同的系统预置不同的输出电压.     

Steam Dewatering of Filter Cakes in a Vertical Filter Press

Steam dewatering of filter cakes is recognized as a competitive alternative to conventional air drying and thermally assisted mechanical dewatering (TAMD). The main benefit of cake dewatering with high-pressure steam is that mechanical and thermal dewatering can be efficiently performed in a single process step. The target of this study was to determine the potential of a steam-dewatering technique for two industrial mineral suspensions. The first mineral, kaolin, was very difficult to dewater using conventional mechanical dewatering techniques, whereas the second one, ground calcium carbonate (GCC), represented only moderate resistance to filtration. The secondary objective was to compare the filterability of the original kaolin slurry with the same slurry treated with a coagulant (aluminum sulphate, Al₂(SO₄)₃ · 16H₂O). Four different kinds of experiments were performed: tests without any kind of cake dewatering, tests with air drying, tests with steam drying, and tests with both coagulation and steam drying. The obtained results show that steam dewatering is an efficient technique for achieving lower cake-moisture contents. Also, the positive influence of coagulation on the filtration capacity was found to be considerable in the case of kaolin. An approximate energy balance was created for the steam-drying process and the determined energy efficiencies were compared with those obtainable with an ideal thermal drier. The main conclusion from these comparisons is that steam drying can be effectively used instead of traditional thermal drying if the large energy losses can be reduced by proper insulation and heat recovery systems.     

ICT-integrated education and national innovation systems in the Gulf Cooperation Council (GCC) countries

The widespread use and availability of information and communication technologies (ICT) has greatly impacted how nations conceptualize innovation and the ways formal mass education can be used to advance socio-political and economic agendas. The Gulf Cooperation Council (GCC) countries have increasingly focused on the roles of science and technology in building research development and innovation (RDI) capacity to create national innovation systems (NIS). This paper uses evidence from the 2007 Trends in International Mathematics and Science Study (TIMSS) and the 2009 World Bank Institute Knowledge Economy Index (KEI) to investigate the spread of ICT in national education systems in the GCC countries and the impact of ICT-based learning as a catalyst for NIS and RDI capacity in the region. Previous research suggests that ICT-based instruction has the potential to build capacity in knowledge development, which is a key component in the establishment of national innovation systems. However, the analyses presented here suggest that the ways ICT is used in education in the GCC do not build capacity in knowledge development in youth. Although evidence shows that GCC countries do have institutional capacity in ICT, it is not used for knowledge development in part because of limitations imposed by the cultural contexts for education in the Gulf. The paper concludes with recommendations for ways that GCC teachers can use ICT to create national innovation systems and research capacity through reforms to teacher training and professional development.     

面向C4350AL处理器的GCC移植与优化

在分析GCC结构的基础上, 阐述了GCC在C4350AL处理器上的移植与优化方案. 针对C4350AL对GCC的x86后端进行了扩展, 实现了GCC对C4350AL的识别. 根据C4350AL的结构特性, 在GCC中为建立了流水线模型描述, 并基于SPEC2006测试程序对模型效果进行了验证. 实验表明采用该模型使得GCC在C4350AL上获得了性能的提升.