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66篇 您的检索式:作者名="En CHENG"
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1GPS-constrained inversion of present-day slip rates along major faults of the Sichuan-Yunnan region, China显示文摘A linked-fault-element model is employed to invert for contemporary slip rates along major active faults in the Sichuan-Yunnan region (96°-108°E, 21°-35°N) using the least squares method. The model is based on known fault geometry, and constrained by a GPS-derived horizontal velocity field. Our results support a model attributing the eastward extrusion of the Tibetan Plateau driven mainly by the north-northeastward indentation of the Indian plate into Tibet and the gravitational collapse of the plateau. Resisted by a relatively stable south China block, materials of the Sichuan-Yunnan region rotate clockwise around the eastern Himalayan tectonic syntaxis. During the process the Garzê-Yushu, Xianshuihe, Anninghe, Zemuhe, Daliangshan, and Xiaojiang faults, the southwest extension of the Xiaojiang fault, and the Daluo-Jinghong and Mae Chan faults constitute the northeast and east boundaries of the eastward extrusion, with their left slip rates being 0.3-14.7, 8.9-17.1, 5.1 ± 2.5, 2.8 ± 2.3, 7.1 ± 2.1, 9.4 ± 1.2, 10.1 ± 2.0, 7.3 ± 2.6, and 4.9 ± 3.0 mm/a respectively. The southwestern boundary consists of a widely distributed dextral transpressional zone other than a single fault. Right slip rates of 4.2 ± 1.3, 4.3 ± 1.1, and 8.5 ± 1.7 mm/a are detected across the Nanhua-Chuxiong-Jianshui, Wuliangshan, and Longling-Lancang faults. Crustal deformation across the Longmenshan fault is weak, with short-ening rates of 1.4 ± 1.0 and 1.6 ± 1.3 mm/a across the Baoxing-Beichuan and Beichuan-Qingchuan segments. Northwest of the Longmenshan fault lies an active deformation zone (the Longriba fault) with 5.1±1.2 mm/a right slip across. Relatively large slip rates are detected across a few faults within the Sichuan-Yunnan block: 4.4±1.3 mm/a left slip and 2.7±1.1 mm/a shortening across the Litang fault, and 2.7±2.3 mm/a right-lateral shearing and 6.7±2.3 mm/a shortening across the Yunongxi fault and its surrounding regions. In conclusion, we find that the Sichuan-Yunnan region is divided into more than a dozen active micro-blocks by a large number of faults with relatively slow slip rates. The eastward extrusion of the Tibetan Plateau is absorbed and adjusted in the region mainly by these faults, other than a small number of large strike-slip faults with fast slip rates.WANG YanZhao WANG EnNing SHEN ZhengKang WANG Min GAN WeiJun QIAO XueJun MENG GuoJie LI TieMing TAO Wei YANG YongLin CHENG Jia LI Peng 2008Science China Earth Sciences2008,51,9:65
2Carrier frequency offset and impulse noise estimation for underwater acoustic orthogonal frequency division multiplexing显示文摘The carrier frequency offset(CFO)and impulse noise always affect the performance of underwater acoustic communication_systems.The CFO and impulse noise could be estimated by using the null subcarriers to cancel the effects of the two types of interference.The null subcarriers estimation methods include optimal separate estimation and joint estimation.The separate estimation firstly estimates the CFO value and then estimates the impulse noise value.However,the CFO and impulse noise always affect each other when either of them is estimated separately.The performance could be improved by using the joint estimation.The results of simulations and experiments have showed that these two optimization methods have good performance and the joint estimation has better performance than the separate estimation method.There is 3 dB performance gain at the BER value of 10^(-2)when using the joint estimation method.Thus these methods could improve the system robustness by using the CFO compensation and impulse noise suppression.SUN Haixin XU Xiaoka MA Li KUAI Xiaoyan CHENG En CHEN En 2014Chinese Journal of Acoustics2014,33,3:8
3A strategy for generating rice apomixis by gene editing显示文摘Apomixis is an asexual reproduction way of plants that can produce clonal offspring through seeds.In this study,we introduced apomixis into rice(Oryza sativa)by mutating OsSPO11-1,OsREC8,OsOSD1,and OsMATL through a CRISPR/Cas9 system.The quadruple mutant showed a transformation from meiosis to mitosis and produced clonal diploid gametes.With mutated Osmatl,which gives rise to haploid induction in plants,the quadruple mutant is expected to be able to be produced apomictic diploid offspring.We named this quadruple mutant as AOP(Apomictic Offspring Producer)for its ability to produce apomictic offspring.En Xie Yafei Li Ding Tang Yanli Lv Yi Shen Zhukuan Cheng 2019Journal of Integrative Plant Biology2019,61,8:6
4De-scattering and edge-enhancement algorithms for underwater image restoration显示文摘Image restoration is a critical procedure for underwater images, which suffer from serious color deviation and edge blurring. Restoration can be divided into two stages: de-scattering and edge enhancement. First, we introduce a multi-scale iterative framework for underwater image de-scattering, where a convolutional neural network is used to estimate the transmission map and is followed by an adaptive bilateral filter to refine the estimated results. Since there is no available dataset to train the network, a dataset which includes 2000 underwater images is collected to obtain the synthetic data. Second, a strategy based on white balance is proposed to remove color casts of underwater images. Finally, images are converted to a special transform domain for denoising and enhancing the edge using the non-subsampled contourlet transform. Experimental results show that the proposed method significantly outperforms state-of-the-art methods both qualitatively and quantitatively.Pan-wang PAN Fei YUAN En CHENG 2019Frontiers of Information Technology & Electronic Engineering2019,20,6:5
5Iterative Block DFE for Underwater Acoustic Single Carrier System显示文摘In order to gain a better performance and reduce the computational complexity of the filter design in the underwater acoustic single carrier system, a new Iterative Block DFE (IBDFE) is proposed, which operates iteratively on blocks of the received signal, and fully implements its filtering operations by Discrete Fourier Transforms (DFTs). Two design methods are considered for IBDFE: one is HD-IBDFE, and the other is SD-IBDFE. In this paper, the first one is adopted. In this scheme, hard detected data are used as input of the feedback, and filters are designed according to the correlation between detected and transmitted data. In the simulations and experiments, the method of the HD-IBDFE is introduced, and for comparison, the performance of H-DFE is shown, as well as that of ZF, MMSE and Matched-Filter-Bound (MFB). From the results of the simulations on a Rayleigh fading channel, it is easily found that on average, the HD-IBDFE outperforms H-DFE. When the number of iteration is 4, HD-IBDFE outperforms ZF, MMSE and H-DFE by about 11dB, 5dB and 0.7dB respectively at BER=10-4. As for MFB, the HD-IBDFE still has a degradation of 1.6 dB. In addition, the experimental results in both experiment pool and shallow water also verify the achievement. The simulation and experiment results indicate that the IBDFE outperforms other equalization schemes. What's more, it exhibits a reduction of the computational complexity.Sun Haixin Guo Yuhui Kuai Xiaoyan Cheng En 2012China Communications2012,9,7:4
6Intensive blood pressure reduction in acute cerebral haemorrhage trial (INTERACT): a randomised pilot trial显示文摘Craig S Anderson Yining Huang Ji Guang Wang Hisatomi Arima Bruce Neal Bin Peng Emma Heeley Christian Skulina Mark W Parsons Jong Sung Kim Qing Ling Tao Yue Chun Li Jian Dong Jiang Li Wen Tai Jin Li Zhang En Xu Yan Cheng Stephane Heritier Lewis B Morgenste 2008Lancet Neurology2008,,5:4
7北斗导航系统卫星激光测距综述显示文摘Satellite laser ranging(SLR)is an unambiguous measurement technique and generates high accuracy satellite orbit data.All satellites in the BeiDou navigation satellite system(BDS)carried laser retro-reflector arrays(LRAs),so they can be tracked by ground SLR stations in order to provide the accurate observation data.The Shanghai astronomical observatory(SHAO)designed the LRAs,and also developed the dedicated SLR systems using a 1 m-aperture telescope and a transportable cabin-based SLR system with a telescopes of 60 cm aperture.These enable BDS satellite ranging during daytime and nighttime with centimeter-level precision,allowing highly accurate estimations of satellite orbits.Moreover,some of the BDS satellites are also equipped with laser time transfer(LTT)payloads,which were developed by the SHAO and China Academy of Space Technology(CAST),providing a highly accurate time comparison between the satellites and ground clocks.This paper describes the dedicated SLR system and the design of the LRAs for BDS satellites,as well as global SLR measurements.The SLR tracking data is used for evaluating the orbit accuracy of BDS satellites and broadcast ephemeris,with an accuracy of less than 1 m.The LTT measurements to BDS satellites for a single shot have a precision of approximately 300 picoseconds,with a time stability of 20 picoseconds in 500 s.ZHANG Haifeng LONG Mingliang YANG Huafeng MENG Wendong CHENG Zhi’en DENG Huarong ZHANG Zhongping ZHANG A’li 2020Aerospace China2020,21,4:4
8Exhumation history of the Huangshan granite pluton,southern Anhui Province:New insights from fission-track analysis显示文摘The dating of the uplift onset of the Huangshan pluton in the southern part of Anhui Province associated with the collision between paleo-Pacific Block and the Eurasian Block is a fundamental issue to better understand the uplift mechanisms and the regional tectonic evolution.χ2 values of seven zircon fission track(ZFT) samples collected from the south part of the Huangshan pluton were all<5%.Based on the grain ages of four typical ZFT samples,three thermal overprints ranging in 113-123,72-95 and 49-66 Ma were distinguished respectively using the binomial peak-fitting method in accordance with the tectonic thermal events after south China shifted into circum-Pacific tectonic region.Apatite fission track(AFT) study of the Huangshan pluton shows ages lie between 15±3 and 56±6 Ma with allχ2 values>5%,and all are significantly younger than their host rock formation ages,indicating that the samples have experienced post-formation thermal history.Based on the AFT results and topography characteristics in the Huangshan pluton,three zones with different denudation intensities caused by the differential uplift of the fault blocks were recognized in this paper,indicating that denudation was driven by the increase in elevation significantly.Modeling of the AFT data shows that the earlier cooling phase took place in the early Cenozoic and involved 3.3,3.8 and 6.0°C/Ma of cooling rates equivalent to the exhumation rates of 90,104 and 167 m/Ma in different fault blocks.The last phase of cooling took place from~10 Ma with average cooling rate of~5.6°C/Ma,equivalent to average denudation rates of~156 m/Ma.The fission track results imply that the regional compression field plays an important role for the differential exhumation between individual fault blocks of the Huangshan pluton.ZHENG Yong YU XinQi YUAN WanMing WANG De'En JIANG GongBing ZHU DeLai WANG Cheng JIA YingYing 2011Science China Earth Sciences2011,54,4:3
9Solidification Structure of Incoloy800 Superalloy with Electromagnetic Field显示文摘Wang En Gang Jiang En Zhan Guo?Feng Deng An Yuan He Ji Cheng 2012Materials Science Forum2012,,706:3
10Effects of Early Intensive Blood Pressure-Lowering Treatment on the Growth of Hematoma and Perihematomal Edema in Acute Intracerebral Hemorrhage: The Intensive Blood Pressure Reduction in Acute Cerebral Haemorrhage Trial (INTERACT)显示文摘Craig S. Anderson Yining Huang Hisatomi Arima Emma Heeley Christian Skulina Mark W. Parsons Bin Peng Qiang Li Steve Su Qing Ling Tao Yue Chun Li Jian Dong Jiang Li Wen Tai Jin Li Zhang En Xu Yan Cheng Lewis B. Morgenstern John Chalmers Ji Guang Wang 2010Stroke2010,,2:3
11Fast synthesis of monodisperse TiO_2 submicrospheres via a modified sol-gel approach显示文摘Monodisperse titania glycolate submicrospheres were synthesized by a modified sol-gel route, in which ultrasonic treatment was introduced to improve the reaction efficiency. The as-prepared products were characterized by means of Fourier transform infrared spectrum (FT-IR), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and scanning electron microscopy (SEM). The results indicate that the as-prepared products are titania glycolate submicrospheres with diameters of 230-330 nm. The average particle diameter is estimated to be about 280 nm. Ultrasonic treatment has an important influence on the morphology of the produced titania glycolates. After calcination at 450°C for 2 h, these titania glycolates were completely converted into anatase TiO2. The morphology of TiO2 particles was well reserved during the calcination process except for a reduction of 18% in the average particle size.WANG Hong'en LI Bo YAN Zaoxuea LU Zhouguang CHENG Ruijing QIAN Donga 2008Rare Metals2008,27,1:2
12Heat Shock Protein 96 Induces Maturation of Dendritic Cells显示文摘客观:热吃惊蛋白质(HSP ) 有混杂的能力到女伴和现在到抗原介绍的肿瘤抗原的一个宽广全部剧目房间 includingDCs。在这份报告,我们由 HSP 96 (gp96 ) 分析了不成熟的 DC 的调整。方法:鼠科的导出 bonemarrow 的 DC 被 GM-CSF 正 IL-4 导致,它模仿了 DC.Cocultured DC 和 gp96 肽建筑群(gp96PC ) 的 immunostimulatory 效果或使 H22 房间失去活性, MHCclass Ⅱ的表示, CD40, CD80 被流动 cytometry 确定。在文化上层清液的 IL-12 和 TNF- 的集中被 ELISA 决定。C_r 版本试金被用来测试特定的 cytotoxicT 房间。结果:我们的学习证明 gp96PC 导致的 DC 成熟的程度,在 costimulatory 和 MHC Ⅱ分子的表面密度被反映,在 vitro 与 IL-12 的分泌物并且与 T 激活房间的潜力被相关。结论:热吃惊 protein96 能从 H22 被孤立并且净化房间并且能导致树枝状的房间的成熟。Ourfindings 可能是到在人的肿瘤的治疗疫苗的 DC 的使用的关联。Chunxia Cao Wei Yang Yonglie Chu Qingguang Liu Liang Yu Cheng' en Pan 2006Journal of Nanjing Medical University2006,20,1:2
13A robust archived differential evolution algorithm for global optimization problems显示文摘HUANG Zhangjun WANG Cheng'en MA Mingxu 2009Journal of Computers2009,4,2:1
14A Method for Creating Microporous Carbon Materials with Excellent CO2‐Adsorption Capacity and Selectivity显示文摘Dan Qian Cheng Lei En‐Min Wang Wen‐Cui Li An‐Hui Lu 2014ChemSusChem2014,,:1
15A Research of Signal Combining Technologies in Cooperative Diversity of OFDM Communication System显示文摘LENG Zhi-juan CHENG En SUN Hai-xin 0,,:1
16Resource constrained project scheduling problem using genetic algorithms显示文摘Cheng R M C en 1996Intemational Journal of Intelligent Automation and Soft Computing1996,,:1
17Longitudinal changes in trunkal balance after selective fusion of King II curves in adolescent idionathic scnlinsi显示文摘Frez R Cheng JC Wong EN 2000Snina_ 20002000,2000,:1
18Inte- grated data management in complex product collaborative de-sign显示文摘PENG Guoqi CUI Dongliang WANG Cheng'en 2009Computers in Industry2009,60,1:1
19SNR estimation algorithm based on pilot symbols for DFTSpread OFDM systems over underwater acoustic channels显示文摘Shen Weijie Sun Haixin Cheng En 2011Journal of Convergence Information Technology2011,6,19:1
20Comparison of guided bone for- mation from periosteum and muscle fascia 显示文摘Brey EN Cheng Mfl Allori A 2007Plast Reconstr Surg2007,119,4:1
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