检索结果-南通市图书馆

Geologic body three-dimensional model generation and visualization method

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2005年第S1期15卷 190-192页

作者： ZHANG Song-mei~(1, 2), LI Jing~1, ZHAO Wen-ji~3. Gong Hui-li~3. Duan Fu-zhou~3. GONG Zhao-ning~3. LI Jia-hong~4 (1. beijing Normal University, beijing 100875, china 2. Jilin University, Changchun 13.061, china 3. The Key Lab of Resource Environment and GIS, beijing 10003., china 4. national Remote Sensing center of china, beijing 100862, china) beijing Normal Univ Beijing 100875 Peoples R China Jilin Univ Changchun 130061 Peoples R China Key Lab Resource Environm Beijing 100037 Peoples R China GIS Beijing 100037 Peoples R China Natl Remote Sensing Ctr china Beijing 100862 Peoples R China

The divergence three-dimensional millet-seed body model and the continuous distributing layer-imitating model were introduced, which were used to express geologic body, and the procedure of generating these two models and their merits and demerits were synthesized. Three methods of geologic body’s three-dimensional expression were separately introduced, and the merits of the continuous distributing layer imitating model were proposed as comparing with the divergence three-dimensional millet-seed body model. The three-dimensional cubes were observed from any direction and any tangle with the application of dealing methods such as peeling, hollowing out, transparent or half-transparent.

关键词： geologic body regular grid net irregular triangle net three-dimensional visualization

Mineralization episode of porphyry copper deposits in the Jinshajiang-Red River mineralization belt: Re-Os dating

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2005年第2期48卷 192-198页

作者： WANG Denghong, QU Wenjun, LI Zhiwei, YIN Hanlong4 & CHEN Yuchuan Institute of Mineral Resources, Chinese Academy of Geological Sciences, beijing 10003., china national {3. of Rock and Mineral Analysis, Chinese Academy of Geological Sciences, beijing 10003., china Resource Assessment {3. of Yunnan, Kunming 650011, china Institute of Geology and Geophysics, Chinese Academy of Sciences, beijing 100101, china Chinese Academy of Geological Sciences, beijing 10003., china Institute of Mineral Resources Chinese Academy of Geological Sciences Beijing China national center of Rock and Mineral Analysis Chinese Academy of Geological Sciences Beijing China Resource Assessment center of Yunnan Kunming China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China Chinese Academy of Geological Sciences Beijing China

Re-Os isotopic dating for the molybdenites from the porphyry copper deposits of the Jinshajiang-Red River mineralization belt in Yunnan Province yields isochron ages of 3..9±1.1 Ma for the Machangqing deposit and 3..4±0.5 Ma for the Tongchang deposit. This result shows that both the Machangqing and the Tongchang porphyry Cu-Mo deposits from two different ore-fields formed simultaneously. This new data and the published Re-Os model ages of molybdenite (3..4 Ma, 3..9 Ma, 3..2 Ma) of the Yulong porphyry copper deposit in Tibet, which is located in the same Jinshajiang-Red River mineralization belt as the Machangqing deposit and the Tongchang deposit, suggest that these three Cenozoic porphyry copper deposits in the Jinshajiang-Red River mineralization belt were contemporary for their mineralization episode. That is to say, even their present locality is far away and nearly iso-distantly distributed, these three porphyry Cu(Mo) deposits belong to the same mineralization episode at the end of Eocene.

关键词： Re-Os isotopic dating, porphyry Cu deposits, Cenozoic, mineralization episode.

Real-time detection of α1A-AR movement stimulated by phenylephrine in single living cells

在线全文

学校读者我要写书评

暂无评论

Acta Pharmacologica Sinica 2007年第6期28卷 796-802页

作者： Ning XU~(2,5),Zhang-yi LIANG~(3.5),Ming XU~2,Ying-hua GUAN~3.Qi-hua HE~4,Qi-de HAN~2,Xin-sheng ZHAO~(3.6),You-yi ZHANG~(2,6)~2 Institute of Vascular Medicine,Peking University Third Hospital,and Key Laboratory of Molecular Cardiovascular Sciences,Ministry ofEducation,beijing 100083.china ~3.beijing {3. Laboratory for Molecular Sciences,State Key Laboratory for Structural Chemistry ofUnstable and Stable Species,and Department of Chemical Biology,College of Chemistry and Molecular Engineering,Peking University,beijing 100871,china ~4 center of Medical Analysis,Peking University,Health Science center,beijing 100083.china Institute of Vascular Medicine Peking University Third Hospital and Key Laboratory of Molecular Cardiovascular Sciences Ministry of Education Beijing China beijing national Laboratory for Molecular Sciences State Key Laboratory for Structural Chemistry of Unstable and Stable Species Department of Chemical Biology College of Chemistry and Molecular Engineering Peking University Beijing China center of Medical Analysis Peking University Health Science Center Beijing China

Aim:To investigate the movement of α1A-adrenergic receptors(α1A-AR) stimu-lated by agonist,phenylephrine （PE）,and the dynamics of receptor movement inreal time in single living cells with millisecond ***:We labeledα1A-AR using the monoclonal,anti-FLAG （a kind of tag） antibody and Cy3.conju-gated goat anti-mouse IgG and recorded the trajectory of their transport processin living HEK293. cells stimulated by agonist,PE,and then analyzed their dy-namic ***:The specific detection of α1A-AR on the surface ofliving HEK293.-α1Acells was achieved.α1A-AR internalize under the stimulationof *** the cells were stimulated with PE for 20 min,apparent colocalizationwas found between α1A-AR and *** 40 min stimulation of PE,trajecto-ries of approximate linear motion in HEK293.-α1Acells were recorded,and theirvelocity was ***:The specific labeling method on the livingcell surface provides a convenient means of real-time detection of the behavior ofsurface *** this method we were able to specifically detect α1A-AR andrecord the behavior of individual particles of receptors with 50 ms exposure time inreal time in single living cells.

关键词： adrenergic receptor trajectory living cell

Prediction method for October 2003.solar storm

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china(Technological Sciences) 2006年第5期49卷 629-640页

作者： XIE Yanqiong1, 2, 3. WEI Fengsi1, FENG Xueshang1 & ZHONG Dingkun1, 2 1. State Key Laboratory of Space Weather, center for Space Science and Applied Research, Chinese Academy of Sciences, beijing 100080, china 2. Graduate School, Chinese Academy of Sciences, beijing 10003., china 3. Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, china State Key Laboratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing China Graduate School Chinese Academy of Sciences Beijing China Institute of Meteorology PLA University of Science and Technology Nanjing China

Aiming at two intense shock events on October 28 and 29, 2003. this paper presents a two-step method, which combines synoptic analysis of space weather ——“observing” and quantitative prediction ——“palpating”, and then uses it to test predictions. In the first step of “observing”, on the basis of observations of the solar source surface magnetic field, interplanetary scintillation (IPS) and ACE spacecraft, we find that the propagation of the shocks is asymmetric relative to the normal direction of their solar sources, and the Earth is located near the direction of the fastest speed and the greatest energy of the shocks. As the two fast ejection shock events, the fast explosion of coronal mass of the extremely high temperature, the strong magnetic field, and the high speed background solar wind are also helpful to their rapid propagation. In the second step of “palpating”, we adopt a new membership function of the fast shock events for the ISF method. The predicted results show that for the onset time of the geomagnetic disturbance, the relative errors between the observational and the predicted results are 1.8% and 6.7%; and for the magnetic disturbance magnitude, the relative errors are 4.1% and 3.1%, re- spectively. Furthermore, the comparison among the predicted results of our two-step method with those of five other prevailing methods shows that the two-step method is advantageous. The results tell us that understanding the physical features of shock propagation thoroughly is of great importance in improving the prediction precision.

关键词： solar storm, interplanetary shock, interplanetary scintillation, two-step method, ISF method.

The strong winter monsoon in East Asia and El Nino

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 1989年第2期8卷 217-221页

作者： Gao Shiying Wang Jinshu national Research center for Marine Environment Forecasts, State Oceanic Administration beijing,{3. national Research center for Marine Environmental Forecasts State Oceanic Administration Beijing China. China

The relationship between meridional wind in mid - latitudes of East Asia and SST in the Equatorial Eastern Pacific is analysed in this paper. It is pointed out that there exist close relations between the seasonal changes of the meridional wind in mid - latitudes of East Asia and SST in the Equatorial Eastern Pacific. The intensification of north winds over East Asia also plays an important role in the rise of SST in Equatorial Eastern Pacific one year later. The strong winter monsoon usually occurs in previous winter of El Nino and it causes low temperature to a great extent in china . The low temperature in china can be regarded as a precursor of El Nino.

关键词： The strong winter monsoon in East Asia and El Nino Asia El

Systematic distortion in cosmic microwave background maps

在线全文

学校读者我要写书评

暂无评论

Science china(Physics,Mechanics & Astronomy) 2009年第5期52卷 804-808页

作者： LIU Hao 1,3.&LI TiPei 1,2 1Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,beijing 100049,china 2center for Astrophysics,Tsinghua University,beijing 100084,china 3.Graduate University of Chinese Academy of Sciences,beijing 100049,china Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing China Graduate University of Chinese Academy of Sciences Beijing China center for Astrophysics Tsinghua University Beijing China

To minimize instrumentally the induced systematic errors,cosmic microwave background(CMB)anisotropy experiments measure temperature differences across the sky using pairs of horn antennas, temperature map is recovered from temperature difference obtained in sky survey through a map-making *** inspect and calibrate residual systematic errors in the recovered temperature maps is important as most previous studies of cosmology are based on these *** analyzing pixel-ring coupling and latitude dependence of CMB temperatures,we find notable systematic devia- tion from CMB Gaussianity in released Wilkinson Microwave Anisotropy Probe(WMAP)*** detected deviation cannot be explained by the best-fit LCDM cosmological model at a confidence level above 99%and cannot be ignored for a precision cosmology study.

关键词： cosmology cosmic microwave background methods data analysis

Principle of small target detection for hyperspectral imagery

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2007年第8期50卷 1225-1231页

作者： GENG XiuRui1,2,3.& ZHAO YongChao2,3.4 1 Research center for Remote Sensing and GIS, Department of Geography, beijing Normal University, beijing 100875,{3. 2 State Key Laboratory of Remote Sensing Science, Chinese Academy of Sciences, beijing 100101,{3. 3.Institute of Erectronics, Chinese Academy of Sciences, beijing 100080,{3. 4 center for for Assessment and Monitoring of Forest and Environmental Resources and Division of Ecosystem Sciences University of California Berkeley, CA 94720-3.14, USA Research center for Remote Sensing and GIS Department of Geography Beijing Normal University Beijing China State Key Laboratory of Remote Sensing Science Chinese Academy of Sciences Beijing China Institute of Erectronics Chinese Academy of Sciences Beijing China center for for Assessment and Monitoring of Forest and Environmental Resources and Division of Ecosystem Sciences University of California Berkeley USA

This paper generalizes the progress of algorithms in small target detection for hyperspectral imaging, and finds that whitening the image is the key point of many methods in small target detection. An al-gorithm is presented to detect desired targets by converting large targets into small ones based on the weighted sample autocorrelation matrix.

关键词： hyperspectral whiten target detection

Vortex genesis over the Bay of Bengal in spring and its role in the onset of the Asian Summer Monsoon

在线全文

学校读者我要写书评

暂无评论

Science china Earth Sciences 2011年第1期54卷 1-9页

作者： WU GuoXiong1, GUAN Yue1,2, WANG TongMei3. LIU YiMin1, YAN JingHui4 & MAO JiangYu1 1 State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, beijing 100029, china 2Graduate University of Chinese Academy of Sciences, beijing 100049, china 3.epartment of Atmospheric Science, Sun Yat-Sen University, Guangzhou 510275, china 4national Climate center, china Meteorological Administration, beijing 100080, china State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Graduate University of Chinese Academy of Sciences Beijing China Department of Atmospheric Science Sun Yat-Sen University Guangzhou China national Climate center China Meteorological Administration Beijing China

Physical processes associated with onset of the 1998 Asian summer monsoon were examined in detail using multi-source datasets. We demonstrated that strong ocean-atmosphere-land interaction in the northern Indian Ocean and tropical Asian area during spring is a fundamental factor that induces the genesis and development of a monsoon onset vortex over the Bay of Bengal (BOB), with the vortex in turn triggering onset of the Asian summer monsoon. In spring, strong surface sensible heating over India and the Indochina Peninsula is transferred to the atmosphere, forming prominent in situ cyclonic circulation, with anticyclonic circulations over the Arabian Sea and northern BOB where the ocean receives abundant solar radiation. The corresponding surface winds along the North Indian Ocean coastal areas cause the ocean to produce the in situ offshore currents and upwelling, resulting in sea surface temperature (SST) cooling. With precipitation on the Indochina Peninsula increasing from late April to early May, the offshore current disappears in the eastern BOB or develops into an onshore current, leading to SST increasing. A southwest-northeast oriented spring BOB warm pool with SST >3.°C forms in a band from the southeastern Arabian Sea to the eastern BOB. In early May, the Somali cross-equatorial flow forms due to the meridional SST gradient between the two hemispheres, and surface sensible heat over the African land surface. The Somali flow overlaps in phase with the anticyclone over the northern Arabian Sea in the course of its inertial fluctuation along the equator. The convergent cold northerlies on the eastern side of the anticyclone cause the westerly in the inertial trough to increase rapidly, so that enhanced sensible heat is released from the sea surface into the atmosphere. The cyclonic vorticity forced by such sensible heating is superimposed on the inertial trough, leading to its further increase in vorticity strength. Since atmospheric inertial motion is destr

关键词： air-sea interaction spring BOB warm pool monsoon onset vortex inertial oscillation Asian summer monsoon onset

national 2000' GPS control network of china

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2007年第8期17卷 983-987页

作者： Yang Yuanxi~(1**) Tang Yingzhe~1 Chen Chuanlu~2 Wang Min~3.Zhang Peng~4 Wang Xiaorui~2 Song Lijie~5 Zhang Zusheng~6 (1.Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,china 2.Geodetic Data Processing center,Xi'an 710054,china 3.center of Earthquake Analysis and Prediction,china Seismological Bureau,beijing 10003.,china 4.national Geomatics center of china,beijing 100044,china 5.Institute of Surveying and Mapping,Zhengzhou University of Information Engineering,Zhengzhou 450052,china 6.First Crustal Deformation Monitoring center,china Seismological Bureau,Tianjin 3.0180,china) Xi'an Research Institute of Surveying and Mapping Xi'an 710054 China Geodetic Data Processing center Xi'an 710054 China center of Earthquake Analysis and Prediction China Seismological Bureau Beijing 100036 China national Geomatics center of china Beijing 100044 China Institute of Surveying and Mapping Zhengzhou University of Information Engineering Zhengzhou 450052 China First Crustal Deformation Monitoring center China Seismological Bureau Tianjin 300180 China

An accurately unified national GPS network with more than 2500 stations,named"national 2000' GPS Control Net- work",signed the epoch 2000.0,has been established by integrating the existing six nationwide GPS networks of china set up by differ- ent departments with different *** paper presents the characteristics of the existing GPS networks,summarizes the strategies in the integrated adjustment of the GPS network,including functional model,stochastic model as well as the adjustment principle modifi- *** modifying the adjustment strategies according to the characteristics of the existing GPS networks and under the support of the IGS stations,the accuracy of the integrated national GPS network is greatly *** datum differences among the sub networks disappear,the systematic error influences are weakened,and the effects of the outliers on the estimated coordinates and their variances are *** is shown that the average standard deviation for the horizontal component is smaller than 1.0 cm,the vertical component is smaller than 2.0 cm,and the three-dimensional (3.D) position of geocenter coordinates is smaller than 3.0 *** exterior checking ac- curacy for the 3.D position is averagely better than 1.0 cm.

关键词： GPS control network adjustment systematic errors robust estimation variance component estimation coordinate system