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Practice and technical approach of GPS observation of mining-induced ground subsidence

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中国有色金属学会会刊：英文版 2005年第S1期15卷 65-68页

作者： GAO Jun-hai~(1,2. WU Li-xin~1 (1. china University of Mining and Technology beijing Campus, beijing 100083, china 2. Tangshan Branch, china Coal Research Institute, Tangshan 063012. china)

The base vector between 2.poins and a high-precision geodetic height difference can be obtained by GPS. If the geodetic height of a point is known, the geodetic height of each observation point in a net can be obtained. When surveying the subsidence value in the mining-induced ground subsidence, the change of the height of monitoring point is needed. On the above theoretical basis, the problem involved in GPS observation of mining-induced ground subsidence and their counter measures were discussed, and an introduction was made that the subsidence value obtained in the monitoring mining-induced ground subsidence can use the change of height of geodetic as a alternative, the result of check on the accuracy and reliability of repetitions observations was analysed. Finally, the effect of errors on accuracy of GPS observation and their reduction measures were elaborated.

关键词： mining-induced ground subsidence GPS observation observation accuracy reliability

An improvement to the data processing course of electrochemical impedance technique

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Journal of University of science and Technology beijing 2003年第6期10卷 57-60页

作者： Yinglv Jiang, Yinshun Wu, and Hong ChuCorrosion and Protection Center, University of science and Technology beijing, beijing 100083, china Corrosion and Protection Ctr. Univ. of Sci. and Technol. Beijing Beijing 100083 China

For some electrochemical systems the traditional data processing methods cannot be met, so it is necessary to develop a new method to deal with these problems. When processingthe electrochemical AC impedance data of titanium alloy TA12.in 3 percent NaCl solution (at freecorrosion potential, room temperature) a new method is developed which can detach the information ofthe interface resistance demonstrably from the interface capacitance. The results show that theinterface resistance and capacitance are all functions of frequency. And the AC impedance of theresistance and capacitance obey the following relations: C(f) = 10^(4.01982. f^(-0.92.2., R(f)=10^(4.80011) (f+0.008)^(-0.90897), which is completely different from the traditional conceptionthat the interface resistance and capacitance are constants. And this phenomenon is ubiquitous intitanium alloys according to the study. So perhaps it is an innate characteristic of interface.

关键词： titanium alloy electrochemical impedance corrosion

Studies on Agarofurans Ⅲ. The Synthesis of 3-Substituted Agarofurans

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chinese Chemical Letters 2000年第4期11卷 301-304页

作者： Wu Yan ZHANG Ji Yu GUO Xiao Tian LIANG (Institute of Materia Medica. chinese academy of Medical {2.s & Peking Union Medical College, beijing 100050) Institute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100050 China

14-Nor-3-oxodihydroagarofuran (2. was prepared in high yield. From 2. derivatives12.and 13 were synthesized by Grignard addition. In order to identify the configuration of C-3 in compound 12.and 13, the sterospecific ... 详细信息

关键词： Agarofuran synthesis

CLT AND LIL FOR THE StATIONARY SEQUENCE OF A DOUBLY STOCHASTIC

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中国科学院大学学报 1996年第1期 1-11页

作者： TIME SERIES AR-MA MODELLu Zu-di(Institute of systems science, Academia Sinica. {2.)

ＣＬＴＡＮＤＬＩＬＦＯＲＴＨＥＳｔＡＴＩＯＮＡＲＹＳＥＱＵＥＮＣＥＯＦＡＤＯＵＢＬＹＳＴＯＣＨＡＳＴＩＣＴＩＭＥＳＥＲＩＥＳＡＲ－ＭＡＭＯＤＥＬＣＬＴＡＮＤＬＩＬＦＯＲＴＨＥＳｔＡＴＩＯＮＡＲＹＳＥＱＵＥＮＣＥＯＦＡ... 详细信息

ＣＬＴＡＮＤＬＩＬＦＯＲＴＨＥＳｔＡＴＩＯＮＡＲＹＳＥＱＵＥＮＣＥＯＦＡＤＯＵＢＬＹＳＴＯＣＨＡＳＴＩＣＴＩＭＥＳＥＲＩＥＳＡＲ－ＭＡＭＯＤＥＬＣＬＴＡＮＤＬＩＬＦＯＲＴＨＥＳｔＡＴＩＯＮＡＲＹＳＥＱＵＥＮＣＥＯＦＡＤＯＵＢＬＹＳＴＯＣＨＡＳＴＩＣ￥...

关键词： doubly stochastic AR-MA model stationary sequence central limit theorem law of iterated logarithm variance of asymptotic distribution

The global image of the Moon obtained by the Chang'E-1:Data processing and lunar cartography

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science china Earth sciences 2010年第8期53卷 1091-1102页

作者： LI ChunLai1, LIU JianJun1, REN Xin1, MOU LingLi1, ZOU YongLiao1, ZHANG HongBo1, Lü Chang1, LIU JianZhong1, ZUO Wei1, SU Yan1, WEN WeiBin1, BIAN Wei1, ZHAO BaoChang2. YANG JianFeng2. ZOU XiaoDuan1, WANG Min1, XU Chun1, KONG DeQing1, WANG XiaoQian1, WANG Fang1, GENG Liang1, ZHANG ZhouBin1, ZHENG Lei1, ZHU XinYing1, LI JunDuo1 & OUYANG ZiYuan11 National Astronomical Observatories, chinese academy of {2.s, beijing 100012. china 2.Xi’an Institute of Optics and Precision Mechanics, chinese academy of {2.s, Xi’an 710119, china National Astronomical Observatories Chinese Academy of Sciences Beijing China Xi’an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi’an China

The global lunar image of the first phase of chinese Lunar Exploration Program is the first image that covered all over the surface of the Moon. It will serve as a critical foundation for succeeding exploration and scientific research. In this paper, the acquisition, characteristics, and data quality of Chang'E-1 CCD image data are described in detail. Also described are the methodology and procedure of data processing. According to rule of planetary cartography, the image data have been processed, geometrically corrected, and then mosaicked and merged in a scale of 1:2.5 million. The results of data processing and charting show that the image data of Chang'E-1 CCD and their geometric precision meet the demand of charting a map in the scale of 1:2.5 million. The relative geometric positioning precision of the global image is better than 2.0 m, and the absolute geometric positioning precision is slightly better than that of the ULCN2.05 and Clementine lunar basemap (V2.0). The plane positioning precision is approximately 100-1500 m. This global image proves to be the best global image of the Moon so far in terms of space coverage, image quality, and positioning precision.

关键词： Chang’E-1 lunar CCD data processing lunar image position lunar global image

Research on resolution between multi-component LFM signals in the fractional Fourier domain

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science china(Information sciences) 2012年第6期55卷 1301-1312页

作者： LIU Feng 1,XU HuiFa 1,2.TAO Ran 3 & WANG Yue 3 1 Department of Electronic and Information Engineering,Naval Aeronautical Engineering Institute,Yantai 2.4001,china 2.The 94362.th Unit of People's Liberation Army,Qingdao 2.6111,china 3 School of Information {2. and Technology,beijing Institute of Technology,beijing 100081,china Department of Electronic and Information Engineering Naval Aeronautical Engineering Institute The 94362.h Unit of People"s Liberation Army School of Information science and Technology Beijing Institute of Technology

When the initial frequencies and chirp rates of multi-component linear frequency modulation (LFM or chirp) signals are close,the signals may not be distinguished in the fractional Fourier domain (FRFD).Consequently,some signals cannot be *** this paper,first,the spectral distribution characteristics of a continuous LFM signal in the FRFD are analyzed,and then the spectral distribution characteristics of a LFM signal in the discrete FRFD are ***,the critical resolution distance between the peaks of two LFM signals in the FRFD is deduced,and the relationship between the dimensional normalization parameter and the distance between two LFM signals in the FRFD is also *** is discovered that selecting a proper dimensional normalization parameter can increase the ***,a method to select the parameter is proposed,which can improve the resolution ability of the fractional Fourier transform (FRFT).Its effectiveness is verified by simulation results.

关键词： fractional Fourier transform LFM signal signal resolution

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粘土矿物与有机碱之间的表面酸碱反应

上海交通大学学报 2004年第11期38卷 1939-1942页

作者：吴德意孔海南叶春上海交通大学环境科学与工程学院上海200240 中国环境科学研究院水环境研究所北京100012

通过研究Ca2.、Al3+、H+饱和的蒙脱石,Ca2.饱和的叶腊石和高岭石对水溶液中两种有机碱(甲基黄和S3307D)的吸附反应,证实了粘土矿物-有机碱吸附作用机制中表面酸碱反应的存在及其重要性.粘土矿物对有机碱的吸附能力为H+-蒙脱石 Ca2.-叶腊... 详细信息

通过研究Ca2.、Al3+、H+饱和的蒙脱石,Ca2.饱和的叶腊石和高岭石对水溶液中两种有机碱(甲基黄和S3307D)的吸附反应,证实了粘土矿物-有机碱吸附作用机制中表面酸碱反应的存在及其重要性.粘土矿物对有机碱的吸附能力为H+-蒙脱石 Ca2.-叶腊石>Al3+-蒙脱石 Ca2.-蒙脱石≈Ca2.-高岭石.通过测定悬浮液pH值和水溶液中矿物表面酸强度,判断吸附机制主要是由表面酸强度而非pH值所控制,即吸附反应机制主要为矿物表面酸位与有机碱之间直接的表面酸碱反应.水溶液中可能的粘土表面酸位为交换性Al3+、H+以及2.1型矿物表面不带电荷部分.

关键词：有机碱粘土矿物酸位酸碱反应吸附

Adsorption and catalytic combustion of ARB on CuO-Fe2.3

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chinese science Bulletin 2003年第21期48卷 2311-2316页

作者： WU Rongcheng, QU Jiuhui, HE Hong & YU Yunbo Research Center for Eco-Environmental sciences, chinese {2. of sciences, beijing 100085, china Correspondence should be addressed to Qu Jiuhui (e-mail: jhqu@***) Research Center for Eco-Environmental sciences Chinese Academy of Sciences

CuO-Fe2.3 composite material with strongmagnetism and a large surface area is prepared by the co-precipitate method. Its adsorption properties towards Acid Red B (ARB) and the regeneration by catalytic com-bustion of organic compounds have been studied. The results show that the prepared CuO-Fe2.3 composite is an excellent adsorbent for ARB adsorption at acid condition. The pres-ence of Cl- has no effect on ARB adsorption. But the 2.SO-can inhibit ARB adsorption. After being recovered by the magnetic separation method, the adsorbent can be regener-ated by catalytic oxidation of absorbate at 300℃ in air at-mosphere. The combustion reactions of ARB in the presence or absence of CuO-Fe2.3 are studied by in situ diffuse reflec-tion FTIR. The results indicate that, in the presence ofCuO-Fe2.3, the degradation temperature is significantlylowered by the catalysis of CuO-Fe2.3, and ARB can be oxi-dized completely without volatile organic compound by-product; in comparison, in the absence of CuO-Fe2.3, the temperature needed for oxidation of ARB is higher and the reaction is incomplete with some N-containing harmfulcompounds produced. The reusability of CuO-Fe2.3 is also studied in successive seven adsorption-regeneration cycles.

关键词： CuO-Fe2.3 复合材料有机化合物吸附剂

Identification and characterization of a salt tolerance-responsive gene(AtGRP9)of Arabidopsis

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Progress in Natural science:Materials International 2003年第1期 52-56页

作者： TANG Yaxiong, CHEN Anping, LIU Shigui and XIA Guixian (Institute of Microbiology, chinese academy of {2.s, beijing 100080, china College of Life {2., Sichuan University, Chengdu 610064, china) Institute of Microbiology，chinese academy of {2.s，beijing 100080 China College of Life science，Sichuan University，Chengdu 610064，china Institute of Microbiology，chinese academy of {2.s，beijing 100080 China College of Life science，Sichuan University，Chengdu 610064，china

Abstract Soil salinity is one of the important limiting factors for plant growth and development. A cDNA clone encoding aglycine-rich protein (designated AtGRP9) was identified from Arabidopsis by functional expression of the plant cDNA library in the fis-sion yeast S. pombe. Yeast cells overexpressing AtGRP9 displayed significantly enhanced salt tolerance. Northern analysis showed thatexpression of AtGRP9 in Arabidopsis was induced by NaCl and plant hormone abscisic acid (ABA). These results suggest that AtGRP9may be involved in the salt stress response in Arabidopsis.

关键词： arabidopsis glycine-rich protein salt tolerance-responsive genes S.pombe.