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INTERACTION OF ELECTRIC CHARGES IN A PIEZOELECTRIC WITH RIGID EXTERNAL CRACKS

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Applied Mathematics and Mechanics(English Edition) 2005年第8期26卷 996-1006页

作者： HU Yuan-tai（胡太平） li guo-qing（李国清） JIANG Shu-nong（蒋树农） HU Hong-ping（胡洪平） YANG Jia-shi（杨嘉实） Institute of Mechanics and Sensing Technology Central South University Changsha 410083 P. R. China Depamnent of Mechanics Huazhong University of Science and Technology Wuhan 430074 P. R. China Depamnent of Engineering Mechanics University of Nebraska Lincoln NE68588 USA

Using Stroh＇s formalism the simple explicit expressions of Green＇s functions for a 2D piezoelectric body with two semi-infinite fixed conductor cracks subjected to a generalized line force were given. The Coulomb force acting on the free line charge aroused by the piezoelectricity and the distributed boundary polarization charges was discussed at first. Interactions between two singularities with free charge （s） located in a region with external cracks were studied, too. The numerical results show that the Coulomb force for two or more singularities with one free charge at least will have much influence on the electromechanical fields in piezoelectric media when these singularities move closely with each other and therefore cannot be overlooked again. The solutions obtained are valid not only for plane and anti-plane problems but also for coupled problems between in-plane and out-of-plane deformations.

关键词： external crack intensity factor Green ' s function Coulomb force

Calculation of stratum surface principal curvature based on a moving least square method

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Journal of China University of Mining and Technology 2008年第1期18卷 59-63页

作者： li guo-qing MENG Zhao-ping MA Feng-shan ZHAO Hai-jun DING De-min liU Qin WANG Cheng Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China School of Mmeral Resources and Safety Engmeertng China University of Mining ＆ Tecl~nology BeOing 100083 China Sanshandao Gold Mine Shandong Gold Group Corporation Limited Laizhou Shandong 261442 China

With the east section of the Changji sag Zhunger Basin as a case study, both a principal curvature method and a moving least square method are elaborated. The moving least square method is introduced, for the first time, to fit a stratum surface. The results show that, using the same-degree base function, compared with a traditional least square method, the moving least square method can produce lower fitting errors, the fitting surface can describe the morphological characteristics of stratum surfaces more accurately and the principal curvature values vary within a wide range and may be more suitable for the prediction of the distribution of structural fractures. The moving least square method could be useful in curved surface fitting and stratum curvature analysis.

关键词： principal curvatures moving least square method surface fitting structural fractures

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Girard Subquantales

工程数学学报 2007年第3期24卷 567-570页

作者：龙飞李庆国湖南大学数学与计量经济学院

Girard quantales是研究计算机科学的线性逻辑的有力工具。它为线性命题公式提供了理论基础;特别是Girard quantales中的“■”运算,它在线性逻辑的一些运算中有着广泛的运用,本文研究了Girard quantales中运算“■”的一些新的性质,给... 详细信息

Girard quantales是研究计算机科学的线性逻辑的有力工具。它为线性命题公式提供了理论基础;特别是Girard quantales中的“■”运算,它在线性逻辑的一些运算中有着广泛的运用,本文研究了Girard quantales中运算“■”的一些新的性质,给出了Girard quantales的Sub- quantales亦是Girard quantales的充分条件。

关键词：对偶子 Girard quantales “ ”运算

Radioimmunotherapy of carcinoma of colon with [131I]-labeled recombinant chimeric monoclonal antibodies to carcinoembryonic antigen

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Acta Pharmacologica Sinica 2005年第10期26卷 1259-1264页

作者： Qiu-jun LU~1, Guang-xing BIAN, Yuan-yuan CHEN, Min ZHANG, Shao-ming guo, li-qing WEN Institute of Radiation Medicine, Beijing 100850, China Institute of Radiation Medicine Beijing China

Aim: To study the distribution of [131I]-labeled anti-CEA MoAbs and its therapeutic effect on the human colonic cancer model in nude mice. Methods: A nude mice model of human colonic cancer was established. [~131I]-labeled anti-CEA MoAbs were injected intravenously into mice. The distribution of the MoAbs was then determined and the effect of RIT on human colonic cancer was observed. Results: The [131I]-labeled anti-CEA MoAbs had a specific distribution after injection. Tumor/non-tumor ratios for [131I]-labeled anti-CEA MoAbs were 10-20 times higher than [131I]-labeled IgG 96 h after injection. Thirty days after injection, significant inhibition of the volume and weight of tumor was observed in the treated mice compared with the control. The tumor growth inhibition rate of 3,1 mCi/kg CEA MoAbs group (LS180, LS174T, SW1116) was 47.8%～64.0%. This was 69.6%-78.6% in the 6.25 mCi/kg CEA MoAbs group, and 81.8%-86.2% in the 12.5 mCi/kg [131I]-labeled anti-CEA MoAbs group. The plasma CEA level was alo lower in treated mice. Conclusion: The results indicate that [131I]-labeled anti-CEA MoAbs can be effective in RIT on colonic cancers.

关键词： humanized chimeric recombinant monoclonal antibody radioimmunotherapy colonic cancer nude mice

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轨道质量指数及其在高铁动态验收中的应用

铁道工程学报 2016年第11期33卷 45-50页

作者：黎国清中国铁道科学研究院北京100081

研究目的:我国高速铁路在开通运营前,均需进行包括动态验收在内的竣工验收,轨道几何状态是动态验收的关键内容。轨道质量指数是用统计特征值来评价轨道区段的平均质量,是评价轨道几何状态的重要指标。本文分析总结国内外轨道几何质量评... 详细信息

研究目的:我国高速铁路在开通运营前,均需进行包括动态验收在内的竣工验收,轨道几何状态是动态验收的关键内容。轨道质量指数是用统计特征值来评价轨道区段的平均质量,是评价轨道几何状态的重要指标。本文分析总结国内外轨道几何质量评价方法和标准,分析我国历年来开通的高速铁路轨道质量指数,并评判高速铁路轨道几何质量。研究结论:(1)我国已开通的高速铁路,其动态检测时的TQI值均满足相关验收标准要求;(2)随着我国铁路建设与运维部门对高速铁路精调精整技术、能力的提高和经验的不断丰富,验收时的轨道几何质量不断提高,后开通高速铁路的轨道几何质量普遍优于前期开通的同等级线路;(3)对高速铁路而言,建议补充完善与幅值评价对应波长的轨道质量指数验收标准;(4)该研究成果对高速铁路轨道状态验收具有指导意义。

关键词：高速铁路轨道质量指数验收

上海外高桥港区二期工程集装箱调度中心火灾报警系统设计介绍

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水运工程 2000年第2期 21-23,38页

作者：郭力清中交水运规划设计院

简要介绍上海外高桥港区二期工程集装箱调度中心火灾报警系统的设计及体会。

关键词：集装箱调度中心火灾报警系统港口工程

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容错控制在电力系统中的应用研究综述

电力系统保护与控制 2010年第3期38卷 140-146页

作者：李江李国庆华北电力大学电气与电子工程学院北京102206 东北电力大学电气工程学院吉林吉林132012

对容错控制在电力系统中的应用研究进行了综述,简要回顾了容错控制的发展历程,阐述了电力系统中容错控制研究的意义和价值,分析了电力系统中应用容错控制的特点,较全面地介绍了其在励磁系统、调速系统、高压直流输电系统、监控系统、FA... 详细信息

对容错控制在电力系统中的应用研究进行了综述,简要回顾了容错控制的发展历程,阐述了电力系统中容错控制研究的意义和价值,分析了电力系统中应用容错控制的特点,较全面地介绍了其在励磁系统、调速系统、高压直流输电系统、监控系统、FACTS装置和继电保护装置中的应用研究现状。根据电力系统的特点和要求,指出了容错控制研究目前存在的问题和未来发展方向。

关键词：电力系统故障诊断容错控制可靠性

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L-偏序集上闭包算子和内部算子的等价刻画

湖南大学学报（自然科学版） 2011年第8期38卷 76-78页

作者：郭兰坤李庆国湖南大学数学与计量经济学院湖南长沙410082

给出L-偏序集上LK-闭包L-系统和LK-内部L-系统的概念.结果表明,在L-偏序集上,LK-闭包L-系统(LK-内部L-系统)和LK-闭包算子(LK-内部算子)之间存在一一对应关系.

关键词： L-偏序闭包系统内部系统

Preliminary characterization of acute aortic dissection in the mainland of China

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Chinese Medical Journal 2011年第11期124卷 1726-1730页

作者： WANG Dong-jin FAN Fu-dong WANG Qiang li qing-guo ZHOU qing WU Zhong SHI Guang-fei Nanjing Drum Tower Hospital Department of IntegratedTraditional and Western Medicine First Clinical College NanjingUniversity of Traditional Chinese Medicine Nanjing Jiangsu210046 China Department of Cardiothoracic Surgery Department of Cardiology AffiliatedDrum Tower Hospital of Nanjing University Medical SchoolNanjing Jiangsu 210008 China

Objective To explore the differences in the characteristics of acute aortic dissection （AAD） among less and more economically developed countries with various cultures and races. Data sources Reports from the International Registry of Acute Aortic Dissection （IRAD） and the mainland of China （MC） were collected by searching the PubMed Database and the Chinese Journal Full-text Database from January 2000 to March 2009. Study selection Those reports from IRAD and MC containing larger numbers of cases and complete patients＇ information were selected, which focused on concrete issues of diagnosing or managing AAD were excluded if they were not able to reflect the overall characteristics of this condition. And the data from the article containing the largest number oatients reDorted bv the same medical center in MC were taken into statistics.

关键词： acute aortic dissection mainland of China the International Registry of Acute Aortic Dissection clinical feature