化肥建设项目经济效益后评价指标体系的建立

根据化肥建设项目经济效益后评价的概念特点，对化肥建设项目经济效益后内容及其指标体系设置的原则进行了研究，并建立了一套具有可操作性的化肥建设项目经济效益后评价指标体系。     

俄罗斯减速器涡轮钻具驱动PDC钻头在西西伯利亚油田的成功应用

涡轮钻具由前苏联研制出来以后，得到了迅速发展，目前已发展到减速器涡轮钻具阶段。现在，俄罗斯西西伯利亚地区普遍使用减速器涡轮钻具钻井，而减速器涡轮钻具驱动PDC钻头的使用还是空白。采用俄罗斯生产的几种不同型号的减速器涡轮钻具，在西西伯利亚进行了驱动PDC钻头钻井的阶段性试验。试验结果表明，在优选PDC钻头结构的情况下，用减速器涡轮钻具驱动PDC钻头，钻头进尺和机械钻速都较牙轮钻头有显著的提高，经济和社会效益显著。介绍了试验中使用的3种俄罗斯减速器涡轮钻具(TPM-195，TPⅢ-195和TPO3—195)的结构特点和主要技术参数。     

新型刮刀钻头的设计及现场试验研究

在理论分析的基础上，综合PDC钻头和刮刀钻头的优点，设计了一种新型的刮刀钻头，并进行了现场试验。现场试验结果表明，该钻头运转平稳，采用低钻压、高转速，钻进速度快，井眼规则通畅，有较明显的防斜作用，该种钻头的推广应用对提高钻井工程的整体效益具有十分重要的意义。     

透析3G在中国面临的重重困局(1)--牌照与标准选择

探讨了中国3G牌照何时发放、发放数量、牌照与标准是否捆绑、3G产业链如何搭建、频率如何分配、市场容量和终端等问题，并对此提出了建设性的意见。     

PET／PC共混物的辐射效应研究

研究了经溶液共混制备的聚对苯二甲酸乙二醇酯／聚碳酸酯（ＰＥＴ／ＰＣ）共混物的辐射效应。结果表明：ＰＥＴ／ＰＣ共混物在辐照过程中未发生酯交换反应和交联反应，但有降解反应发生。在研究的剂量范围内，辐照对ＰＥＴ／ＰＣ共混物中ＰＥＴ和ＰＣ的晶体形态影响不明显。     

电子自旋共振在橡胶研究中的应用

综述了电子自旋共振在橡胶的合成、加工和应用领域的应用现状及其发展前景。     

宽带无线接入系统WiMAX的应用与部署

介绍了宽带无线接入系统WiMAX的关键技术，并与其他接入技术作了比较；阐述了WiMAX的主要应用、组网部署；也指出了WiMAX存在的一些主要问题。     

Ionization of Porous Hypercrosslinked Polymers for Catalyzing Room-Temperature CO2 Reduction via Formamides Synthesis

Catalysis Letters - Porous materials with heterogeneous nature occupy a pivotal position in the chemical industry. This work described a facile pre- and post-synthetic approach to modify porous...     

Optimization of post-classification processing of high-resolution satellite image: A case study

The application of remote sensing monitoring techniques plays a crucial role in evaluating and governing the vast amount of ecological construction projects in China. However, extracting information of ecological engineering target through high-resolution satellite image is arduous due to the unique topography and complicated spatial pattern on the Loess Plateau of China. As a result, enhancing classification accuracy is a huge challenge to high-resolution image processing techniques. Image processing techniques have a definitive effect on image properties and the selection of different parameters may change the final classification accuracy during post-classification processing. The common method of eliminating noise and smoothing image is majority filtering. However, the filter function may modify the original classified image and the final accuracy. The aim of this study is to develop an efficient and accurate post-processing technique for acquiring information of soil and water conservation engineering, on the Loess Plateau of China, using SPOT image with 2.5 m resolution. We argue that it is vital to optimize satellite image filtering parameters for special areas and purposes, which focus on monitoring ecological construction projects. We want to know how image filtering influences final classified results and which filtering kernel is optimum. The study design used a series of window sizes to filter the original classified image, and then assess the accuracy of each output map and image quality. We measured the relationship between filtering window size and classification accuracy, and optimized the post-processing techniques of SPOT5 satellite images. We conclude that (1) smoothing with the majority filter is sensitive to the information accuracy of soil and water conservation engineering, and (2) for SPOT5 2.5 m image, the 5×5 pixel majority filter is most suitable kernel for extracting information of ecological construction sites in the Loess Plateau of China.