铸造镍铬钼铜新型耐磨蚀合金的局部腐蚀

采用化学浸泡法研究了铸造Ｎｉ－Ｃｒ－Ｍｏ－Ｃｕ合金的局部腐蚀行为，结合磷复肥生产的介质条件，研究了材料的击穿电位，保护电位，点蚀的形成过程，合金元素对蚀孔形成的影响，并且考察了合金的晶间腐蚀特性，由此，对材料的耐局部腐蚀行为进行了综合评价。     

高速纺涤纶切片及粉屑的热分析

本文分析了高速纺涤纶生、干切片及粉屑的热性能等。发现同一工厂生产的切片，其羧基含量和热性能波动较大，与一些优质切片相比存在一定的差距。随分子量分布加宽切片的热性能变差。干切片粉屑与干切片的熔点接近，但熔融结晶峰值温度高于切片，过冷度降低，峰底宽变窄，它会在纺丝中造成纤维固化结晶时间的不同，影响ＰＥＴＰＯＹ结构的均一。     

Combining liquid chromatography with MALDI mass spectrometry using a heated droplet interface

A novel interfacing technology is described to combine solution-based separation techniques such as liquid chromatography (LC) with matrix-assisted laser desorption ionization (MALDI) mass spectrometry. The interface includes a transfer tube having an inlet and an outlet, the inlet being adapted to accept the LC effluents and the outlet being adapted to form continuously replaced, hanging droplets of the liquid stream, and a MALDI sample plate mounted below the outlet of the transfer tube for collecting the droplets. The liquid stream in the transfer tube is heated to a temperature sufficient to cause partial evaporation of the carrier solvent from the hanging droplets. The droplets are dislodged to the MALDI plate, which is heated to above the boiling point of the carrier solvent to cause further evaporation of the carrier solvent from the collected droplets. It is found that analytes can be fractionated and deposited to a sample spot of 0.8 mm in diameter when a liquid flow rate of up to 50 microL/min and a fractionation interval of 1 min/spot are used. Flow rate of up to 200 microL/min can be used with a deposition sample spot of 2.4 mm in diameter on a commercial MALDI target. This heated droplet interface does not introduce sample loss, and the detection sensitivity of LC/MALDI is similar to that of standard MALDI, i.e., low femtomoles for peptide analysis with a microliter sample deposition. It is compatible with microbore and narrow-bore column separation, thus allowing the injection of a larger amount of sample for separation and analysis, compared to a capillary column LC/MALDI system. The detection dynamic range is shown to be in the order of 10(6) for peptide mixture analysis, which is 4 orders of magnitude greater than standard MALDI. The application of this interface for combining LC with MALDI MS/MS is demonstrated in the proteome analysis of water-soluable protein components of E. coli K12 extracts.     

氮素水平对甜菜主要营养的影响

甜菜植株含氮量与施氮量呈极显著正相关，生育中前期氮的分配以叶部为主，其后氮向根的分配率增加，但高氮处理到生育后期氮对叶部的分配率仍处于较高水平，不利于产量形成和糖分积累。甜菜植株磷、钾含量与施氮量呈极显著正相关，氮与磷、钾表现出明显的互作效应。     

城市建设用地敏感度研究初探

针对实际规划编制过程中经常遇到的问题——地方政府委托编制的控制性详细规划的用地区位和范围不尽合理进行了思考,探索性地提出"城市建设用地敏感度"的概念,并尝试建立"城市建设用地敏感度评价"的初步方法。同时结合案例对"城市建设用地敏感度评价"在国家法定规划程序中的具体应用进行探讨。     

On the similarities between micro/nano lithography and topology optimization projection methods

The aim of this paper is to incorporate a model for micro/nano lithography production processes in topology optimization. The production process turns out to provide a physical analogy for projection filters in topology optimization. Blueprints supplied by the designers cannot be directly used as inputs to lithographic processes due to the proximity effect which causes rounding of sharp corners and geometric interaction of closely spaced design elements. Therefore, topology optimization is applied as a tool for proximity effect correction. Furthermore, it is demonstrated that the robust projection filter can be used to account for uncertainties due to lithographic production processes which results in manufacturable blueprint designs and eliminates the need for subsequent corrections.     

体系结构模拟器在处理器设计过程中的作用

随着摩尔定律趋于终结,处理器性能的提升越来越依赖于处理器微体系结构的优化改良,而处理器微体系结构的优化改良离不开体系结构模拟器的辅助,因此体系结构模拟器在现代和未来的高性能处理器设计中的作用越来越重要.具体地,体系结构模拟器可以辅助进行处理器微结构探索、芯片逻辑验证、硅后验证环境搭建、系统软件开发等工作.首先,介绍了开源模拟器与处理器设计的关系,并指出开源模拟器在辅助进行处理器设计方面的不足,同时对处理器厂商使用模拟器辅助进行处理器设计的方法和经验进行了分析总结.其次,对用于处理器微结构优化和改进的性能模拟器的校准方法进行了总结,然后对模拟器的纵向和横向优化方法进行了总结.最后,对新型异构模拟器进行了总结,并对未来模拟器的发展和基于模拟器进行处理器设计的方法进行了总结和展望.     

计及不确定性的含分布式发电并网的配电网 故障区段定位方法

主动配电网作为分布式发电的高效集成和管理平台,其故障区段定位是一门重要课题。针对含分布式发电并网的主动配电网故障区段定位问题,计及分布式发电出力的不确定性,基于随机机会约束规划建立配电网故障区段定位模型。所建立的模型以概率形式的评价函数为目标函数,计及控制变量定义域约束,故障类型限值约束等约束条件构建。通过对基本帝国竞争算法进行改进得到二进制帝国竞争算法,并采用改进帝国竞争算法设计模型求解流程。仿真算例表明,所建立的模型适用于含分布式发电并网的主动配电网故障区段定位求解,并计及分布式发电出力不确定性对定位结果的影响,改进帝国竞争算法在模型的求解中性能较优。     

农村综合能源系统多层协同优化运行方法

农村综合能源系统通过多种能源的协同互补,在满足农村用户多元化用能需求的同时,能有效提升能源利用效率和用能经济性.首先,在考虑适应农村典型场景的基础上,提出了一种三层协同自律的农村综合能源分层协同运行优化框架.然后,基于农村综合能源系统典型设备,建立了三层农村综合能源系统源储荷联合优化调度模型以及相应的优化调度流程.调度...     

基于海量数据工程图的几何校正方法研究

针对海量数据工程图在数字化过程中出现的误差较大、处理效率太低的问题，提出了一种基于格网的双线性变换算法结合双缓冲区存取数据技术的新方法，并对双线性变换算法进行了优化。最后将该方法应用于一种具体的海量数据工程图——飞机模线图，实现了对该类图快速、有效的几何校正。