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142篇 您的检索式:作者名="Wang Wa"
    题名 作者 年代 出处 被引量
1Genome Alignment Spanning Major Poaceae Lineages Reveals Heterogeneous Evolutionary Rates and Alters Inferred Dates for KeyEvolutionary Events显示文摘Xiyin Wa ng Jingpeng Wang Dianchuan Jin Hui Guo Tae-Ho Lee Tao Liu Andrew H. Paterson 2015Molecular Plant2015,8,6:18
2Modeling of elastic wave propagation on a curved free surface using an improved finite-difference algorithm显示文摘Based on existing direct and imaging methods of a staggered finite-difference scheme, an improved algorithm for staggered finite-difference is proposed to implement rugged topographic free boundary conditions. This method assumes that the free surface can be implemented with horizontal and vertical free surface segments and their corners; the free surface passes through the grid points of shear stress components, instead of the normal stress components. Imaging is carried out for stress components in both horizontal and vertical directions, thus increasing the accuracy. To update particle- velocities, imaging and updating are first performed in the horizontal direction, and then in the vertical direction. The numerical results for elastic flat horizontal free surface with the imaging method and those for flat free surfaces of various slope angles with the proposed method are compared, and are shown to be in good agreement. The advantage of the proposed method is that only the stresses are dealt with in implementing the free surface into the staggered algorithm, which improves computation efficiency.WANG Xiuming1,3 & ZHANG Hailan2 1. CSIRO Petroleum, ARRC, PO BOX 1130, Technology Park, Bentley, WA 6102, Australia 2. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China 3. Present address: Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China 2004Science China(Physics,Mechanics & Astronomy)2004,47,5:11
3Experimental studies on perturbed acoustic resonant spectroscopy by a small rock sample in a cylindrical cavity显示文摘A measurement system for acoustic resonant spectroscopy (ARS) is estab-lished,and the effects of resonant cavity geometry,inner perturbation samples and envi-ronmental temperature on the ARS are investigated. The ARSs of the small samples with various sizes and acoustic properties are measured. The results show that at the normal pressure,the resonant frequency decreases gradually with the increase of liquid tem-perature in the cylindrical cavity,while the resonant amplitude increases. At certain pres-sure and temperature,both the resonant frequency and the amplitude decrease greatly when there exist air bubbles inside the cavity fluid. The ARS is apparently affected by the sample porosity and the sample location in the resonant cavity. At the middle of the cavity,the resonant frequencies reach their maximum values for all of the measurement samples. The resonant frequencies of the porous rock samples are smaller than those of the com-pacted samples if other acoustic parameters are the same. As the sample is moved from the top to the middle of the cavity along its axis,the resonant amplitude increases gradu-ally for the compacted rocks while decreases for the unconsolidated rocks. Furthermore,the resonant amplitude increases firstly and then decreases if the porosity of the rock sample is relatively small. In addition,through the comparisons between the experimental and theoretical results,it is found that the effects of the acoustic parameters and sizes of the samples and the size of the cylindrical cavity on the laboratory results agree well with the theoretical ones qualitatively. These results may provide basic reference for the ex-periment study of rock acoustic properties in a low frequency using ARS.CHEN Dehua1,2,WANG Xiuming2,3,CONG Jiansheng1,XU Delong1,SONG Yanjie1 & MA Shuilong4 1. Department of Geophysics,Daqing Petroleum Institute,Daqing 163318,China 2. Institute of Acoustics,Chinese Academy of Sciences,Beijing 100080,China 3. Division of Petroleum,Australian Commonwealth Scientific and Industrial Research Organization,Bent-ley WA 6102,Australia 4. Daqing Testing and Technology Services Corporation,Daqing 163153,China 2006Science China(Physics,Mechanics & Astronomy)2006,49,6:8
4Challenges and strategies in high-accuracy manufacturing of the world’s largest SiC aspheric mirror显示文摘In the process of manufacturing the world’s largest silicon carbide(SiC)aspheric mirror,the primary difficulties are mirror blank preparation,asphere fabrication,and testing,as well as cladding and coating.Specifically,the challenges include the homogeneity of the complicated structure casting,accuracy and efficiency of the fabrication process,print-through effect,fidelity and precision of test procedure,stress and denseness of cladding process,the dynamic range of interferometric measurement,and air turbulence error due to the long optical path.To break through such a barrier of difficulties,we proposed the water-soluble room temperature vanishing mold and gel casting technology,homogeneous microstructure reaction-formed joint technology,nano-accuracy efficient compound fabrication,gravity unloading technology,high-denseness low-defect physical vapor deposition(PVD)Si-cladding technology,test data fusion method,and time-domain averaging method,etc.Based on the proposed technologies and methods,we have accomplished the world’s largest SiC aspheric mirror with a size of φ4.03 m.The impressive performance of the SiC aspheric mirror is validated by the characteristics of the fabricated SiC aspheric mirror.The aerial density of the SiC blank is less than 120 kg/m^(2),surface shape test accuracy is better than 6 nm RMS,thickness inhomogeneity of the cladding layer is less than 5%,and the final surface figure error and roughness are 15.2 nm RMS and 0.8 nm RMS,respectively.Xuejun Zhang Haixiang Hu Xiaokun Wang Xiao Luo Ge Zhang Wenxing Zhao Xiaoyi Wang Zhenyu Liu Ling Xiong Erhui Qi Congcong Cui Yanchao Wang Yingjie Li Xu Wang Longxiang Li Yang Bai Qiang Cheng Zhiyu Zhang Ruigang Li Wa Tang Xuefeng Zeng Weijie Deng Feng Zhang 2022Light(Science & Applications)2022,11,12:3
5Hydrocarbon accumulation in network and its application in the continental rift basin显示文摘The concept of hydrocarbon accumulation in network was presented on basis of the overall analysis of the formation and evolution characteristics of the continental faulted basin and of the systemic re-search on the major controlling factors on the hydrocarbon accumulation. The hydrocarbon accumu-lation in network can be defined as hydrocarbon accumulation in a three-dimensional network system which is constituted by the hydrocarbon migration passages under multiple dynamics,following the hydrocarbon generation from source rocks. The research shows that the hydrocarbon accumulation in network is composed of four elements,i.e.,hydrocarbon source (source rock kitchen),hydrocarbon accumulation terminal (trap),network pathway connecting source and terminal (transporting system),and network potential driving hydrocarbon migration in the network pathway (migration dynamics). Compared with other networks,hydrocarbon accumulation in network has three basic characteristics: the irreversible geological process of material and information flow in the network; the loss of material and information in the flow process in the network; the multiple dynamics in the flow process. Interac-tion of all the elements in the geological process can be called hydrocarbon accumulation in network. There are three basic models for hydrocarbon accumulation in network,that is,hydrocarbon accumu-lation in the network source area,hydrocarbon accumulation in the network pathway,and hydrocarbon accumulation in the network terminal. The key in the application of the hydrocarbon accumulation models in network in practice is to confirm the major accumulation stage and the function range of the four elements controlling the hydrocarbon firstly,to predict the profitable accumulation region by su-perposition of the favorable areas confirmed by four elements consequently,and to evaluate the oil-bearing property of the trap as well as confirm drilling targets. This paper takes the Dongying De-pression in the Bohai Bay Basin as an application example.PANG XiongQi1,2,CHEN DongXia1,ZHANG ShanWen3,HAO Fang1,LIU Zheng1,LIU KeYu3,SONG GuoQi4,WANG YongShi4,LUO XiaoRong5 & WU XiaoChun61 State Key Laboratory of Petroleum Resource and Prospecting,Chinese University of Petroleum,Beijing 102249,China 2 Basin and Reservoir Center,Chinese University of Petroleum,Beijing 102249,China 3 SINOPEC Shengli Oilfield,Dongying 257051,China 4 CSIRO Petroleum,P. O. Box 1130,Bentley,WA 6102,Australia 5 Institute of Geology and Geophysics,Chinese Academy of Science,Beijing 100029,China 6 China National Petroleum Corporation,Beijing 100724,China 2008Science China Earth Sciences2008,51,S2:3
6Persistent organic pollutants in environment of the Pearl River Delta, China: an overview显示文摘Jiamo Fu Bixian Mai Guoying Sheng Gan Zhang Xinming Wang Ping’an Peng Xianming Xiao Rong Ran Fanzhong Cheng Xianzhi Peng Zhishi Wang U Wa Tang 2003Chemosphere2003,,9:2
7Persistent organic pollutants in environment of the Pearl River Delta, China: an overview显示文摘Jiamo Fu Bixian Mai Guoying Sheng Gan Zhang Xinming Wang Ping’an Peng Xianming Xiao Rong Ran Fanzhong Cheng Xianzhi Peng Zhishi Wang U Wa Tang 2003Chemosphere2003,,9:2
8Lactobacillus reu- teri enhances excitability of colonic AH neurons by in- hibiting calcium - dependent potassium channel opening 显示文摘Kunze WA Mao YK Wang B 2009J Cell Mol Med2009,13,8:1
9Synthesis and platelet aggregation inhibitory effects of harman and phthalide derivatives related to Ligusticum Chuanxion(Hort)conatituents显示文摘Foye WO Wa ng X Wang H 1997Med Chem Res1997,7,3:1
10Dietary genistein down - regulates androgen and estrogen receptor expression in the rat prostate显示文摘Fritz WA Wang J Eltoum IE Lamartiniere CA 2002Mol Cell Endocrinol2002,186,1:1
11Survival benefit of neoadju- vant ehemotherapy in non-small cell lung cancer: an updat- ed meta-analysis of 13 randomized control trials显示文摘Song WA Zhou NK Wang W 2010J Thorac On- col2010,5,:1
12Continuous loss of bone during chronic immobilization: a monozygotic twin study 显示文摘Bauman WA Spungen AM Wang J 1999Osteoporos Int1999,10,2:1
13Tongue reconstruction: recent advances 显示文摘Bokhari WA Wang SJ 2007Curr Opin Otolal:yngol Head Neck Surg2007,15,4:1
14Survival benefit of neoadjuvant chemotherapy in non-small cell lung cancer:an updated meta-analysis of 13 randomized control trials显示文摘Song WA Zhou NK Wang W 2010J Thorac Oncol2010,5,4:1
15Endoplasmic reticulum stress associated responses in cancer显示文摘Wang WA Groenendyk J Michalak M 2014Biochim Biophys Acta2014,1843,10:1
16The Formation of PSB-like sheer Bands in Cyclically Deformed Ultrafine Grained Copper Processed by ECAP显示文摘Wa S D Wang I G Jing C B etc 2003Scripta Materialia2003,,48:1
17Emodin inhibits ATPinduced IL-1βsecretion,ROS production and phagocytosis attenuation in rat peritoneal macrophages via antagonizi ng P2X7receptor显示文摘Zhu S Wang Y Wa ng X 2014Pharm Biol2014,52,1:1
18The effect of platelet-derived growth factor on the cellular response of the periodontium:an autoradiographic study on dogs显示文摘Wang HL Pappert TD Castelli WA 1994J Periodontol1994,65,5:1
19Survival benefit of neoadjuvant chemotherapy in non small cell lung cancer: an updated meta analysis of 13 randomized control trials显示文摘Song WA Zhou NK Wang W 2010J Thorac Oncol2010,5,51:1
20Characteristics and physiological role of the Ca^2+-activated Cl-conductance in smooth muscle显示文摘Large WA Wang Q 1996Am J Physiol1996,271,1:1
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