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| 1 | Characteristics and Dolomitization of Upper Cambrian to Lower Ordovician Dolomite from Outcrop in Keping Uplift, Western Tarim Basin, Northwest China显示文摘Late Cambrian to Early Ordovician sedimentary rocks in the western Tarim Basin, Northwest China, are composed of shallow-marine platform carbonates. The Keping Uplift is located in the northwest region of this basin. On the basis of petrographic and geochemical features, four matrix replacement dolomites and one type of cement dolomite are identified. Matrix replacement dolomites include (1) micritic dolomites (MD1); (2) fine-coarse euhedral floating dolomites (MD2); (3) fine-coarse euhedral dolomites (MD3); and (4) medium-very coarse anhedral mosaic dolomites (MD4). Dolomite cement occurs in minor amounts as coarse saddle dolomite cement (CD1) that mostly fills vugs and fractures in the matrix dolomites. These matrix dolomites have δ18O values of ?9.7‰ to ?3.0‰ VPDB (Vienna Pee Dee Belemnite); δ13C values of ?0.8‰ to 3.5‰ VPDB; 87Sr/86Sr ratios of 0.708516 to 0.709643; Sr concentrations of 50 to 257 ppm; Fe contents of 425 to 16878 ppm; and Mn contents of 28 to 144 ppm. Petrographic and geochemical data suggest that the matrix replacement dolomites were likely formed by normal and evaporative seawater in early stages prior to chemical compaction at shallow burial depths. Compared with matrix dolomites, dolomite cement yields lower δ18O values (?12.9‰ to ?9.1‰ VPDB); slightly lower δ13C values (?1.6‰-0.6‰ VPDB); higher 87Sr/86Sr ratios (0.709165-0.709764); and high homogenization temperature (Th) values (98°C-225°C) and salinities (6 wt%-24 wt% NaCl equivalent). Limited data from dolomite cement shows a low Sr concentration (58.6 ppm) and high Fe and Mn contents (1233 and 1250 ppm, respectively). These data imply that the dolomite cement precipitated from higher temperature hydrothermal salinity fluids. These fluids could be related to widespread igneous activities in the Tarim Basin occurring during Permian time when the host dolostones were deeply buried. Faults likely acted as important conduits that channeled dolomitizing fluids from the underlying strata into the basal carbonates, leading to intense dolomitization. Therefore, dolomitization, in the Keping Uplift area is likely related to evaporated seawater via seepage reflux in addition to burial processes and hydrothermal fluids. | JI Congwei QING Hairuo CHEN Daizhao LUO Ping JIN Zhijun SHAO Longyi | 2013 | Acta Geologica Sinica(English Edition)2013，87，4： | 4 |
| 2 | Poly-Si TFTs integrated gate driver circuit with charge-sharing structure显示文摘A p-type low-temperature poly-Si thin film transistors(LTPS TFTs) integrated gate driver using 2 nonoverlapped clocks is proposed.This gate driver features charge-sharing structure to turn off buffer TFT and suppresses voltage feed-through effects.It is analyzed that the conventional gate driver suffers from waveform distortions due to voltage uncertainty of internal nodes for the initial period.The proposed charge-sharing structure also helps to suppress the unexpected pulses during the initialization phases.The proposed gate driver shows a simple circuit,as only 6 TFTs and 1 capacitor are used for single-stage,and the buffer TFT is used for both pulling-down and pulling-up of output electrode.Feasibility of the proposed gate driver is proven through detailed analyses.Investigations show that voltage bootrapping can be maintained once the bootrapping capacitance is larger than0.8 pF,and pulse of gate driver outputs can be reduced to 5μs.The proposed gate driver can still function properly with positive V_(TH)shift within 0.4 V and negative V_(TH) shift within-1.2 V and it is robust and promising for high-resolution display. | Meng Chen Jiefeng Lei Shengxiang Huang Congwei Liao Lianwen Deng | 2017 | Journal of Semiconductors2017，38，5： | 1 |
| 3 | Adaptive Kalman filtering for vehicle navigation显示文摘 | Hu Congwei Chen Wu | 2003 | Journal of Global Positiioning System2003，2，1： | 1 |
| 4 | Adaptive Kalman Filtering for VehicleNavigation 显示文摘 | Hu Congwei Chen Wu | 2003 | Journal of Global Positioning System2003，2，1： | 1 |
| 5 | Adaptive Kalman Filtering for Vehicle Navigation 显示文摘 | Hu Congwei Chen Wu | 2003 | Journal of Global Positioning System (S1446-3156)2003，2，1： | 1 |
| 6 | Kinematic GPS Precise Point Positioning for Sea Level Monitoring with GPS Buoy 显示文摘 | Wu Chen Congwei Hu Zhihua Li Yongqi Chen Xiaoli Ding Shan Gao and Shengyue Ji | 2004 | Journal of Global Positioning Systems2004，3，12： | 1 |
| 7 | Retinoic acid inhibits pancreatic cancer cell migration and EMT through the downregulation of IL-6 in cancer associated fibroblast cells显示文摘 | Jian Guan Hui Zhang Zhang Wen Yumei Gu Yin Cheng Yang Sun Tingting Zhang Congwei Jia Zhaohui Lu Jie Chen | 2013 | Cancer Letters2013，，： | 1 |
| 8 | Adap tive Kalman filtering for vehicle navigation显示文摘 | Hu Congwei Chen Wu Chen Yongqi | 2003 | Jour nal of Global Positioning System2003，2，1： | 1 |
| 9 | Computational design and discovery of conformationally flexible inhibitors of acetohydroxyacid synthase to overcome drug resistance associated with the W586L mutation 显示文摘 | JI Fengqin NIU Congwei CHEN Chaonan | 2008 | Chem Med Chem2008，3，8： | 1 |
| 10 | Adap- tive Kalman filtering for vehicle navigation显示文摘 | Hu Congwei Chen Wu Chen Yongqi et aZ | 2003 | Jour- nal of Global Positioning Systems2003，2，1： | 1 |
| 11 | Critical Issues on GPS RTK Operation Using HongKong GPS Active Network 显示文摘 | CHEN Wu HU Congwei DING Xiaoli | 2002 | Journal of Geospatial Engineering2002，4，1： | 1 |
| 12 | Adaptive Kalman Filtering for Vehicle Navigation显示文摘 | Hu Congwei Chen Wu | 2003 | Journal of Global Positioning System2003，2，1： | 1 |
| 13 | Kinematic GPS Precise Point Positioning for Sea Level Monitoring with GPS Buoy 显示文摘 | Wu Chen Congwei Hu Zhihua Li | 2004 | Journal of Global Positioning Systems2004，3，12： | 1 |
| 14 | Adaptive Kalman Filterling for Vehicle Narigation显示文摘 | Hu Congwei Chen wu Chen Yongqi | 2003 | Journal of Gbobal Positioning System2003，，02： | 1 |
| 15 | Kinematic GPS Precise Point Positioning for Sea Level Monitoring with GPS Buoy 显示文摘 | Wu Chen Congwei Hu Zhihua Li | 2004 | Journal of Global Positioning Systems2004，3，12： | 1 |
| 16 | Kinematic GPS Precise Point Positioning for Sea Level Monitoring with GPS Buoy 显示文摘 | CHEN Wu HU Congwei LI Zhihua | 2004 | Journal of Global Positioning Systems2004，3，12： | 1 |
| 17 | Kinematic GPS Precise Point Positioning for Sea Level Monitoring with GPS Buoy显示文摘 | CHEN Wu HU Congwei LI Zhihua | 2004 | Journal of Global Positioning System2004，1，8： | 1 |
| 18 | Adaptive Kalman Filterin for Vehicle Navigation显示文摘 | Hu Congwei Chen Wu | 2005 | IEEE Aerospace and Electronic Systems Magazine2005，20，3： | 1 |
| 19 | Adaptive Kalman filtering for vehicle navigation 显示文摘 | Hu Congwei Chen Wu | 2003 | Journal of Global Positiioning System2003，2，1： | 1 |
| 20 | GPS Rapid Static and Kinematic Positioning Based on GPS Active Network显示文摘This paper presents a data processing strategy for GPS kinematic positioning by using a GPS active network to model the GPS errors in double difference observable.Firstly,the double difference residuals are estimated between the reference stations in the active network.Then the errors at a user station are predicted as the network corrections to user measurements,based on the location of the user.Finally conventional kinematic positioning algorithms can be applied to determine the position of the user station.As an example,continuous 24_hour GPS data in March 2001 has been processed by this method.It clearly demonstrates that,after applying these corrections to a user within the network,both the success rate for ambiguity resolution and the positioning accuracy have been significantly improved. | CHEN Wu HU Congwei CHEN Yongqi DING Xiaoli Simon Chi_wo Kowk | 2003 | Geo-Spatial Information Science2003，6，1： | 0 |
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