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33篇 您的检索式:作者名="WangMin"
    题名 作者 年代 出处 被引量
1Contemporary velocity field of crustal movement of Chinese mainland from Global Posi-tioning System measurements显示文摘NIUZhijun WANGMin SUNHanrong SUNJianzhong YOUXinzhao GANWeijun XUEGuijiang HAOJinxin XINShaohua WANGYongqing WANGYongxiang LIBai 2005Chinese Science Bulletin2005,50,9:27
2He-Ar Isotopic Systematics of Fluid Inclusions in Pyrites from PGEpolymetallic Deposits in Lower Cambrian Black Rock Series, South China显示文摘He-Ar isotopic compositions of fluid inclusions trapped in pyrites from some representative PGEpolymetallic deposits in Lower Cambrian black rock series in South China were analyzed by using an inert gas isotopic mass spectrometer. The results show that the ore-forming fluids possess a low 3He/4He ratio, varying from 0.43x10-8 to 26.39×10-8, with corresponding R/Ra value of 0.003-0.189. The 40Ar/36Ar ratios are 258-287, close to those of airsaturated water (ASW). He-Ar isotopic indicator studies show that the ore-forming fluids were mainly derived from the formation water or basinal hot brine and sea water, while the content of mantle-derived fluid or deep-derived magmatic water might be negligible. The PGE-polymetallic mineralization might be related to the evolution of the Caledonian miogeosynclines distributed along the southern margin of the Yangtze Craton. During the Early Cambrian, the formation water or basinal hot brine trapped in Caledonian basins which accumulated giant thick sediments was expelled and migrated laterally along strata because of the pressure generated by overlying sediments. The basinal hot brine ascended along faults, mixed with sea water and finally deposited ore minerals.SUNXiaoming WANGMin XUETing MAMingyang LIYinhe 2004Acta Geologica Sinica(English Edition)2004,78,2:17
3Improvement of Toughness of Ultrahigh Strength Steel Aermet 100显示文摘The influence of double aging on the microstructure and mechanical properties of ultrahigh strength steel Aermet100 was analyzed. Under the double aging, there is no apparent decrease in the strength of steel. However, theimpact fatigue life can be prolonged by 35.5% and dynamic fracture toughness be raised by 22.6% respectively, ascompared with the normal aging. Based on the observation of microscopic structure, the physical mechanism ofthe prolongation of impact fatigue life and the enhancement of stability of the reverted austenite, AR, is analyzedfurther. The results show that this new technique is a breakthrough of combination optimization between strengthand toughness for Aermet 100 steel. In the light of the current understanding on this subject, the volume fractureof soften and tough AR formed in process of heat preservation at higher temperature of double aging increasesdrastically. Moreover, during the treatment of lower temperature of double aging, the carbon separating from themartensitic ferrite will diffuse into AR, resulting that the martensitic brittleness decreases and the stability of ARincreases.Liuding WANG Laizhu JIANG Ming ZHU Xiao LIU Wangmin ZHOU 2005Journal of Materials Science & Technology2005,21,5:15
4AXISYMMETRIC CONTACT PROBLEM OF CUBIC QUASICRYSTALLINE MATERIALS显示文摘The axisymmetric elasticity theory of cubic quasierystal was developed in Ref.[1].The axi-symmetric elasticity problem of cubic quasicrystal is reduced to a single higher-order partial differentialequation by introducing a displacement function,based on which,the exact analytic solutions for the elasticfield of an axisymmetric contact problem of cubic quasicrystalline materials are obtained for universal contactstress or contact displacement.The result shows that if the contact stress has order-1/2 singularity on theedge of the contact domain,the contact displacement is a constant in the contact domain.Conversely,if thecontact displacement is a constant,the contact stress must have order-1/2 singularity on the edge of thecontact domain.Zhou Wangmin Fan Tianyou Yin Shuyuan 2002Acta Mechanica Solida Sinica2002,15,1:14
5PACKING A TREE OF ORDER p WITH A (p,p+1)-GRAPH显示文摘Let G1 and G2 be two graphs of the same order,If G1 is isomorphic to a spanning subgraph of the complement of G2,then we say that G1 and G2 are packable.A graph G is called a (p,m)-graph if G has p vertices and m edges.The main purpose of this paper is to present a necessary and sufficient condition for a tree of order p and a (p,p+1)-graph to be packable.WANGMin LIGuojun 2003Journal of Systems Science & Complexity2003,16,1:12
6Dating of sediment-hosted disseminated-type gold deposit by using ^40Ar/^39Ar laser probe:A case study of Changkeng large-scale gold deposit,China显示文摘Hydrothermal clay minerals that formed in the main metallogenic stage of the Changkeng disseminated-type gold deposit in central Guangdong were analyzed by the 40Ar/39Ar laser probe. The results give Ar-Ar isochron ages of 109.9 1.4 to 110.1 1.3 Ma, which are 30 to 50 Ma older than the age of silver ore bodies in the deposit. Both gold and silver mineralizations were not related to hidden granite batholith in the mining district, but probably related to evo-lution of sedimentary basins. This study shows that the 40Ar/39Ar laser probe is a sound dating tool applicable to sediment-hosted disseminated-type gold deposit.SUNXiaoming CHENWen: WANGMin XUETing SUNKai CHENBinghui 2003Chinese Science Bulletin2003,48,17:8
7MODIFIED LAYER REMOVAL METHOD FOR MEASUREMENT OF RESIDUAL STRESS DISTRIBUTION IN THICK PRE-STRETCHED ALUMINUM PLATE显示文摘The integrated structure parts are widely used in aircraft. The distortion caused by residual stresses in thick pre-stretched aluminum plates during machining integrated parts is a common and serious problem. To predict and control the machining distortion, the residual stress distribution in the thick plate must be measured firstly. The modified removal method for measuring residual stress in thick pre-stretched aluminum plates is proposed and the stress-strain relation matrix is deduced by elasticity theory. The residual stress distribution in specimen of 7050T7451 plate is measured by using the method, and measurement results are analyzed and compared with data obtained by other methods. The method is effective to measure the residual stress.WANGShu-hong ZUODun-wen WANGMin WANGZong-rong 2004Transactions of Nanjing University of Aeronautics and Astronautics2004,21,4:8
8ALGORITHM FOR THE DETECTION AND PARAMETER ESTIMATION OF MULTICOMPONENT LFM SIGNALS显示文摘A novel algorithm based on Radon-Ambiguity Transform (RAT) and Adaptive Signal Decomposition (ASD) is presented for the detection and parameter estimation of multicomponent Linear Frequency Modulated (LFM) signals. The key problem lies in the chirplet estimation.Genetic algorithm is employed to search for the optimization parameter of chirplet. High estimation accuracy can be obtained even at low Signal-to-Noise Ratio(SNR). Finally simulation results are provided to demonstrate the performance of the proposed algorithm.YuanWeiming WangMin WuShunjun 2005Journal of Electronics(China)2005,22,2:7
9Optimal Design and Force Control of a Nine-Cable-Driven Parallel Mechanism for Lunar Takeoff Simulation显示文摘Traditional simulation methods are unable to meet the requirements of lunar takeo simulations, such as high force output precision, low cost, and repeated use. Considering that cable-driven parallel mechanisms have the advantages of high payload to weight ratio, potentially large workspace, and high-speed motion, these mechanisms have the potential to be used for lunar takeo simulations. Thus, this paper presents a parallel mechanism driven by nine cables. The purpose of this study is to optimize the dimensions of the cable-driven parallel mechanism to meet dynamic workspace requirements under cable tension constraints. The dynamic workspace requirements are derived from the kinematical function requests of the lunar takeo simulation equipment. Experimental design and response surface methods are adopted for building the surrogate mathematical model linking the optimal variables and the optimization indices. A set of dimensional parameters are determined by analyzing the surrogate mathematical model. The volume of the dynamic workspace increased by 46% after optimization. Besides, a force control method is proposed for calculating output vector and sinusoidal forces. A force control loop is introduced into the traditional position control loop to adjust the cable force precisely, while controlling the cable length. The e ectiveness of the proposed control method is verified through experiments. A 5% vector output accuracy and 12 Hz undulation force output can be realized. This paper proposes a cable-driven parallel mechanism which can be used for lunar takeo simulation.Wangmin Yi Yu Zheng Weifang Wang XiaoqiangTang Xinjun Liu Fanwei Meng 2019Chinese Journal of Mechanical Engineering2019,32,4:5
10Ecological service assessment of human-dominated freshwater ecosystem with a case study in Yangzhou Prefecture, China显示文摘Freshwater ecosystems provide a host of services to humanity. These services are now rapidly being lost, not least because of the inability of making the impacts measurable. To overcome this obstacle, assessment frameworks for freshwater ecosystem services are needed. A simple water equivalent framework to assess the ecological services provided by freshwater ecosystems was developed in this study. It translated the occupation of freshwater ecosystem services into biologically freshwater volumes and then compares this consumption to the freshwater throughput, that is, the ecological capacity available in this region. In this way, we use the example of Yangzhou Prefecture, to account the main categories of human occupation of water ecosystem services. The result showed that there is a huge gap between the consumption and the supply of freshwater ecosystem services. This must encourage local government to make land-use and water management decisions both economically rational and environmentally sound.YEYa-ping WANGRu-song RENJing-ming HUDan YUANShao-jun WANGMin 2004Journal of Environmental Sciences2004,16,5:5
11N,N-Dilauryl Chitosan: Synthesis and Surface Pressure-area Isotherm显示文摘With sodium dodecyl sulfonate(SDS) as the phase transferring catalyst, N,N-Dilauryl chitosans with a high degree of alkyl group substitution were prepared and characterized by means of FTIR, 1H NMR and elemental analyses. The results indicate that the average degree of alkyl group substitution on the chitosan increases with decreasing the molecular weight of the chitosan. The fully N,N-dilaurylated chitosan was found to be dissolvable in chloroform. The collapsed pressures of the samples derived from chitosan with 3000, 5000 and 10000 dalton are 47.6, 48.2 and 51.0 mN/m, respectively. The surface area occupied by the monomer unit(glucosamine) of all those samples is 0.6 nm2.XINMei-hua WANGMin LIMing-chun LIUChao SUNDuo-xia MITSUISHIMasaya MIYASHITATokuji 2004Chemical Research in Chinese Universities2004,20,2:5
12Characteristics of Horizontal Crustal Movement in the North China Region in the Last Decade显示文摘Based on high-precision data obtained in the past decade from GPS re-measurement in the North China Network, the Crustal Movement Observation Network of China (CMONOC) and GPS measurement along the Shanxi graben zone, the status and evolution of horizontal crustal movement in the North China region are analyzed. The results show that(1) the Yanshan tectonic zone (Zhangjiakou-Bohai Sea zone)is an active one with the largest horizontal strain in the North China region; The largest tendency differential movement of adjacent blocks is seen between the Yanshan block and the North China plain block; about 2mm/a (left lateral); (2) The significant horizontal differential movement along the boundaries of the North China region is characterized by right-lateral strike-slip movement at the middle-north segment on its west boundary (composed of Yinchuan and other active tectonic zones) and compressive movement at the south segment; while the Yinshan rift zone located along the west segment on its north boundary is dominated by tensile movement. Other boundaries and zones have no obvious differential movement; (3) On the whole, measurements of each period differ from one another, which might result from the nonlinear movement component as well as from the error effect. In the paper, results of the relative movement and strain in different periods are given for different blocks and boundary zones.YangGuohua HanYueping WangMin 2004Earthquake Research in China2004,18,2:4
13Light Hydrocarbons in Fluid Inclusions and Their Constraints on Ore Genesis:A Case Study of the Songxi Ag(Sb)Deposit,Eastern Guangdong,China显示文摘The Songxi deposit is a newly discovered large Ag (Sb) deposit. By using a suite of high-vacuum quadrupole gas mass spectrometer systems, the authors have recognized many kinds of light hydrocarbons in fluid inclusions of minerals. These hydrocarbons are mainly composed of C1-C4 saturated alkanes, while the contents of C2-C4 unsaturated alkenes and aromatic hydrocarbons are quite low, suggesting that the metallogenic processes have not been affected by magmatic activities. Chemical equilibrium studies show that these hydrocarbons may be a mixture of organic gases generated by microorganism activity and those by thermal cracking of type-II kerogens (kukersite) in sedimentary host rocks, and the former may constitute more than two-thirds, implying that microorganism might have played an important role in the metallogenesis. The equilibrium temperature of the latter is about 300(C, which is much higher than the geothermal temperature at the estimated depth of metallogenesis. Thus, the light hydrocarbons generated by thermal cracking of kerogens probably originated in the deep part of the sedimentary basins and then migrated through a long distance to shallower horizons of the basin. Based on the composition of light hydrocarbons in fluid inclusions, the authors infer that the Songxi deposit was formed in a continental rift. The analytical data presented in this paper support from one aspect the genetic model that the Songxi deposit may be a sedimentary hot brine transformed deposit instead of a submarine basic volcanic exhalation and low-medium temperature volcanic hydrothermal fluid filling deposit proposed by most previous researchers.SUNKai WANGMin CHENBinghui CHENJingde YUShoujun SUNXiaoming DavidI.NORMAN 2003Acta Geologica Sinica(English Edition)2003,77,2:2
14A Study on Turbo-Codes in Asynchronous DS-CDMA显示文摘In this paper, orthogonal/turbo-codes for mobile DS-CDMA communications are considered. We compare the performances of turbo-codes with those of convolutional codes for noncoherent M-ary orthogonal modulation in multipath fading channels. One method to calculate the branch transition probability of turbo-codes is suggested.By using the parameter of cut-off rate capacity efficiency, 1/2/5 (37,21) turbo-codes are more efficient for 1/3/9(557,663,711) convolutional codes. Given the same spread gain, turbo-codes will increase system’s capacity.If SOVA is used in the decoding for turbo-codes case, the dime-delay caused by turbo-decoding is only 1.2 times of that of convolutional codes. Obviously, turbo-codes show better performances at the cost of the hardware complexity of the encoder and the decoder.LinJiaru WangMin1998The Journal of China Universities of Posts and Telecommunications1998,5,2:2
15Preparation and Characterization of Acylated Chitosan显示文摘Fully acylated chitosan and N, N-diacyl chitosan were prepared. The products were characterized by elemental analysis, FTIR and 1H NMR. The experimental results indicate that the average degree of acylation depends on the volume ratio of pyridine to chloroform in the reaction medium, the chain length of the acylation agent used, and the molecular weight of chitosan raw materials. The XRD measurements were carried out for pure chitosan, fully acylated chitosan and N, N-diacyl chitosan to verify the crystallinity change caused by the acylation.LIMing-ehun LIUChao XINMei-hua ZHAOHuang WANGMin FENGZhen SUNXiao-li 2005Chemical Research in Chinese Universities2005,21,1:2
16Rapid differentiation of simple saccharides based on cluster ions by paper spray tandem mass spectrometry显示文摘Simple saccharides have a variety of biological functions,but their structural diversity and inherent structural features pose a major challenge for rapid analysis.In this work,we developed a derivative-free and ion mobility-free method for the rapid analysis of monosaccharides and disaccharides using paper spray tandem mass spectrometry.Trimeric cluster ions consisting of saccharide analytes,ligands and transition metal ions are used as precursor ions.We defined the R-value as the ratio of the intensity of the product ion that loses one molecule of ligand over the intensity of the product ion that loses one molecule of saccharide via collision induced dissociation(CID).The species and conformation of simple saccharides can be easily differentiated by calculating this R-value.With the capability of directly analyzing clinical samples using paper spray ionization,our method can be used to rapidly quantify the molar ratio of galactose to glucose in dried plasma samples to aid in the diagnosis of galactosemia.The analytical strategy provided herein has good potential to be applied to a wide range of saccharide analysis applications in the future.Wangmin Hu Tianyi Li Yulei Yang Shanshan Jia Mei Zhang 2022Chinese Chemical Letters2022,33,11:1
17显示文摘WangMin(王敏) GuoHongzhen(郭鸿镇) 2008塑性工程学报2008,15,:1
18Detemir and insulin pump to treat diabetes observed efficacy显示文摘Wangmin 2012chemists (Academic Edition)2012,10,4:1
19显示文摘LIYuan-Ying(李沅英) WANGMin(王曼) CAIShao-Hua(蔡少华) etal ChineseJInorgChem(WujiHuaxueXuebao)0,,:1
20显示文摘WangMin(王敏) GuoHongzhen(郭鸿镇) 塑性工程学报0,,:1
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