新区采油速度与稳产时间、递减率变化关系研究

针对新区稳产时间以及递减期递减余率大小难以确定等问题,通过对中原油田61个独立小区块进行分析对比,得出采油速度与稳产时间,不同采油速度下无因次采油速度与时间关系曲线,对于新区开发预测稳产时间以及预测递减期产量变化有着重要意义.     

ROI-based Watermarking Scheme for JPEG 2000

A new region of interest (ROI)-based watermarking method for JPEG 2000 is presented. The watermark is embedded into the host image based on the characteristics of the ROI to protect rights to the images. This scheme integrates the watermarking process with JPEG 2000 compression procedures. Experimental results have demonstrated that the proposed watermark technique successfully survives JPEG 2000 compression, progressive transmission, and principal attacks.     

近年太钢烧结技术发展回顾与展望

近年来太钢由于烧结技术进步，烧结矿质量不断改善，固体燃耗降低，促进了高炉炉料结构的优化。为高炉技术经济指标提高奠定了基础。     

保护机密文件,007系列并不精彩的故事

故事背景能够拍成电影、搬上荧幕的,都是詹姆斯·邦德最风光的功劳,其实007一年到头来并不总是如此风光,比如这个最新接到的任务。根据中情局的最新情报,来自欧洲某大国R国的间谍已经瞄准了代号为"XPS"的高度机密资料。而邦德接到的任务是保护此机密文件。     

高精度智能转速测量模板的设计

介绍了一种利用高性能的16位单片机80C196KC进行转速实时高精度的测量方法，阐述了如何通过CAN总线实现与微机通讯；详细描述了硬件电路的设计，并给出了软件程序框图。     

Plasma properties of laser-ablated St target in air

Ｐｌａｓｍａｐｒｏｐｅｒｔｉｅｓｏｆｌａｓｅｒ－ａｂｌａｔｅｄＳｔｔａｒｇｅｔｉｎａｉｒＷａｎｇＸｉａｎｇ－Ｔａｉ（王象泰）；ＭａｎＢａｏ－Ｙｕａｎ（满宝元）；ＷａｎｇＧｏｎｇ－Ｔａｎｇ（王公堂）；ＦａｎＸｉ－Ｊｕｎ（樊锡君）；ＷａｎｇＪｕｎ（王军）...     

冶钢小方坯连铸机结晶器液面控制系统故障分析及对策

本文针对某一钢铁厂的一套小方坯连铸机结晶器液面自动控制系统，对其故障原因进行了深入分析，指出导致系统控制性能达不到设计要求长期无法投入运行的主要原因，并提出了相应的解决方法。     

The Cubooctahedron Shape──A Suboptimal Cell Shape for 3－Dimensional Cellular System

ＴｈｅＣｕｂｏｏｃｔａｈｅｄｒｏｎＳｈａｐｅ──ＡＳｕｂｏｐｔｉｍａｌＣｅｌｌＳｈａｐｅｆｏｒ３－ＤｉｍｅｎｓｉｏｎａｌＣｅｌｌｕｌａｒＳｙｓｔｅｍＣｈａＧｕａｎｇｍｉｎｇ；ＬｉＺｈｅｎｇｍａｏ；ＬｕＦａｎ（ＵｎｉｖｅｒｓｉｔｙｏｆＥｌｅｃｔｒｏｎｉ...     

Thyrotropin-receptor-mediated diseases: a paradigm for receptor autoimmunity

Autoantibodies to the thyrotropin receptor (TSHR) can act as thyrotropin agonists or antagonists, or can cause thyroid hypertrophy. Neither the autoantibody-binding sites on the TSHR nor the intracellular mechanisms by which the autoantibodies mediate their diverse functional effects are completely understood. This article reviews how cloning of the TSHR has contributed to our understanding of its structure and function, and has allowed induction of experimental autoimmunity to the TSHR.     

Novel polymeric aromatic lithium sulfonylimides as salts for polymer electrolytes

Three new polymeric aromatic lithium sulfonylimides were used as salts in high molecular weight poly(ethylene oxide) (PEO) electrolytes. Their conductivity and electrochemical stability behaviors were investigated. The electrolytes with lithium poly[4,4′‐(hexafluoroisopropylidene)diphenoxy]sulfonylimide (LiPHFIPSI) showed a better conductive performance compared with the other two lithium salts. The best conductivity was obtained for PEO/LiPHFIPSI EO/Li = 16 (1.90 × 10^?4 S/cm at 60°C). Thermal analysis indicated that the salts effectively decreased the crystallinity of PEO. Moreover, the electrolytes also had good electrochemical stability and their oxidative potential was to 5.5 V versus Li/Li⁺. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 1802–1805, 2002