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15篇 您的检索式:作者名="CHEN Fuwen"
    题名 作者 年代 出处 被引量
1Chronology and geochemistry of the volcanic rocks in Woruo Mountain region,Northern Qiangtang depression:Implications to the Late Triassic volcanic-sedimentary events显示文摘A suite of sedimentary-volcaniclastic rocks intercalated with the volcanic rocks unconformably overlies the Triassic Xiaochaka Formation in the Woruo Mountain region, Qiangtang Basin, northern Tibet. The vitric tuff from the base of these strata gives a SHRIMP zircon U-Pb age of 216 ± 4.5 Ma, which represents the age of the Late Triassic volcanic-sedimentary events in the Woruo Mountain region, and is consistent with that of the formation of the volcanic rocks from the Nadi Kangri Formation in the Nadigangri-Shishui River zone. There is a striking similarity in geochemical signatures of the volcanic rocks from the Woruo Mountain region and its adjacent Nadigangri-Shishui River zone, indicating that all the volcanic rocks from the Qiangtang region might have the same magmatic source and similar tectonic setting during the Late Triassic. The proper recognition of the Late Triassic large-scale volcanic eruption and volcanic-sedimentary events has important implications for the interpretation of the Late Triassic biotic extinction, climatic changes and regressive events in the eastern Tethyan domain, as well as the understanding of the initiation and nature, and sedimentary features of the Qiangtang Basin during the Late Triassic-Jurassic.WANG Jian FU XiuGen CHEN WenXi WANG ZhengJiang TAN FuWen CHEN Ming ZHUO JieWen 2008Science China Earth Sciences2008,51,2:21
2New chronological evidence for Yanshanian diagenetic mineralization in China's Altay orogenic belt显示文摘Granitoids and related pegmatitic rare-metal deposits are widespread in China’s Altay region,they used to be considered as Hercynian rocks and mineral deposits.Reported here are the^40Ar^39Ar ages of potassium-rich minerals (muscovite and microcline)in the Koktokay pegmatitic rare-metal orefield and whole-rock as well as quartz fluid-inclusion Rb-Sr isochron ages of granite and ores in the Shangkelan pegmatite rare-metal orefield. The ages indicate that there are Yanshanian Diagenetic Mineralization events happening in China’s Altay orogenic belt and that formation of the famous Koktokay No.3 pegmatitic rare-metal deposit endured about 30 Ma of magmatic crystallization differentiation.Fuwen Chen Huaqin Li Denghong Wang Hong Cai Wen Chen 2000Chinese Science Bulletin2000,45,2:12
3Design of robust non-fragile H-infinity controllerbased on Delta operator theory显示文摘Considering that the controller parameters are of additive norm-bounded uncertainties when realized,a design method of robust non-fragile H-infinity controller for uncertain system based on Delta operator theory is illustrated in this paper.A sufficient and necessary condition of the existence for the controller is given,which is presented in LMI forms.Finally,the designed method is used in the speed control system of permanent magnet linear synchronous motor (PMLSM).With the designed controller,the resulted speed closed-loop system is still stable and has the expected H- infinity performance even if the sample period is reduced and the parameters of the controller and the controlled object are of variations.The results show that the designed method is effective.Ruiquan LIN Fuwen YANG Qiugang CHEN 2007控制理论与应用(英文版)2007,5,4:3
4Effect of rare earth La_2O_3 on the microstructure and mechanical properties of TiC/W composites显示文摘In this study, La2O3 was investigated as an additive to TiC/W composites. The composites were prepared by vacuum hot pressing, and the microstructure and mechanical properties of the composites were investigated. Experimental results show that the grain size of the TiC/W composites is reduced by TiC particles. When 0.5 wt.% La2O3 is added to the composites, the grain size is reduced further. According to TEM analysis, La2O3 can alleviate the aggregation of TiC particles. With La2O3 addition, the relative density of the TiC/W composites can be improved from 95.1% to 96.5%. The hardness and elastic modulus of the TiC/W + 0.5 wt.% La2O3 composite are little improved, but the flexural strength and the fracture toughness increase to 796 MPa and 10.07 MPa·m1/2 respectively, which are higher than those of the TiC/W composites.CHEN Yong WU Yucheng YU Fuwen CHEN Junling 2008Rare Metals2008,27,6:2
5Discharge behavior of Mg–4wt%Ga–2wt%Hg alloy as anode for seawater activated battery显示文摘Jun Zhao Kun Yu Yanan Hu Shaojun Li Xin Tan Fuwen Chen Zhiming Yu 2011Electrochimica Acta2011,,24:2
6Constituents of the root bark of Severinia buxifolia collected in Hainan显示文摘WU Tianshung CHEN Chenmao LIN Fuwen 2001J Nat Prod2001,64,8:1
7Microstructure effects on the electrochemical corrosion properties of Mg – 4.1% Ga – 2.2% Hg alloy as the anode for seawater-activated batteries显示文摘Kun Yu Xin Tan Yanan Hu Fuwen Chen Shaojun Li 2011Corrosion Science2011,,5:1
8On the origin of SARS-CoV-2——The blind watchmaker argument显示文摘In the comparison with SARS-CoVof 2003,SARS-CoV-2 is extremely well adapted to the human populations and its adaptive shift from the animal host to humans must have been even more extensive.By the blind watchmaker argument,such an adaptive shift can only happen prior to the onset of the current pandemic and with the aid of step-by-step selection.Chung-I Wu Haijun Wen Jian Lu Xiao-dong Su Alice CHughes Weiwei Zhai Chen Chen Hua Chen Mingkun Li Shuhui Song Zhaohui Qian Qihui Wang Bingjie Chen Zixiao Guo Yongsen Ruan Xuemei Lu Fuwen Wei Li Jin Le Kang Yongbiao Xue Guoping Zhao Ya-Ping Zhang 2021Science China(Life Sciences)2021,64,9:1
9The Late Triassic rift-related volcanic rocks from eastern Qiangtang, north- ern Tibet (China) : Age and tectonic implications 显示文摘Fu Xiugen Jian Wang Fuwen Tan Ming Chen Wen-bin Chen 2010Gondwana Research2010,17,:1
10Luminescent and thermometric properties of dual emitting Eu^(2+)/Sm^(3+) co-doped Sr_(4)La(PO_(4))_(3)O phosphor based on energy transfer显示文摘Eu^(2+)/Sm^(3+)co-doped dual-emitting Sr_(4)La(PO_(4))_(3)O phosphors were synthesized through a convenient high temperature solid state reaction in reductive atmosphere.The structure,luminescence,energy transfer and temperature-dependent luminescence properties of Eu^(2+)/Sm^(3+)co-doped Sr_(4)La(PO_(4))_(3)O phosphors were researched and analyzed in detail.The blue emission of Eu^(2+)and the red emission of Sm^(3+)can work together as FIR signals.Based on the different response characteristics of these two ion emissions to temperature,Sr_(4)La(PO_(4))_(3)O:Eu^(2+)/Sm^(^(3+))phosphor achieves the relative sensitivity of0.48384%/K and a wide range of temperature measurements from room temperature to 573 K.The results reveal that the Sr_(4)La(PO_(4))_(3)O:Eu^(2+)/Sm^(3+)phosphor has application prospect in the field of high temperature optical thermometry.The energy transfer mechanism is proved to be the dipole-dipole interaction between Eu^(2+)and Sm^(3+)ions.Fuwen Liu Degang Deng Ming Wu Bowen Chen Liuyan Zhou Shiqing Xu 2021Journal of Rare Earths2021,39,3:1
11Advances of CRISPR-Cas13 system in COVID-19 diagnosis and treatment显示文摘The ongoing global pandemic of coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has resulted in over 570 million infections and 6 million deaths worldwide. Early detection and quarantine are essential to arrest the spread of the highly contagious COVID-19. High-risk groups, such as older adults and individuals with comorbidities, can present severe symptoms, including pyrexia, pertussis, and acute respiratory distress syndrome, on SARS-CoV-2 infection that can prove fatal, demonstrating a clear need for high-throughput and sensitive platforms to detect and eliminate SARS-CoV-2. CRISPR-Cas13, an emerging CRISPR system targeting RNA with high specificity and efficiency, has recently drawn much attention for COVID-19 diagnosis and treatment. Here, we summarized the current research progress on CRISPR-Cas13 in COVID-19 diagnosis and treatment and highlight the challenges and future research directions of CRISPR-Cas13 for effectively counteracting COVID-19.Qianqian Zhou Yanhua Chen Ruolei Wang Fengjing Jia Feng He Fuwen Yuan 2023Genes & Diseases2023,10,6:0
12A whole-genome association approach for large-scale interspecies traits显示文摘Dear Editor,The genetic mechanism of large-scale interspecies traits,including evolutionary novelties and the characteristics of high taxa,is a central issue in evolutionary biology.At present,genome-wide association studies(GWAS)are known as one of the most powerful and affordable tools for understanding the association between heritable variations and phenotypic changes in populations of single species.Therefore,it would be interesting to determine whether GWAS can be applied to study large-scale interspecies traits.Huizhong Fan Lei Chen Yibo Hu Guohui Shi Yi Dai Fuwen Wei Qi Wu 2021Science China(Life Sciences)2021,64,8:0
13Estimate of contribution of near-inertial waves to the velocity shear in the Bay of Bengal based on mooring observations from2013 to 2014显示文摘Near-inertial motions contribute most of the velocity shear in the upper ocean.In the Bay of Bengal(BoB),the annual-mean energy flux from the wind to near-inertial motions in the mixed layer in 2013 is dominated by tropical cyclone(TC)processes.However,due to the lack of long-term observations of velocity profiles,our knowledge about interior near-inertial waves(NIWs)as well as their shear features is limited.In this study,we quantified the contribution of NIWs to shear by integrating the wavenumber-frequency spectra estimated from velocity profiles in the upper layers(40-440 m)of the southern Bo B from April 2013 to May 2014.It is shown that the annual-mean proportion of near-inertial shear out of the total is approximately 50%,and the high contribution is mainly due to the enhancement of the TC processes during which the near-inertial shear accounts for nearly 80%of the total.In the steady monsoon seasons,the near-inertial shear is dominant to or at least comparable with the subinertial shear.The contribution of NIWs to the total shear is lower during the summer monsoon than during the winter monsoon owing to more active mesoscale eddies and higher subinertial shear during the summer monsoon.The Doppler shifting of the M_(2)internal tide has little effect on the main results since the proportion of shear from the tidal motions is much lower than that from the near-inertial and subinertial motions.Shanwu Zhang Yun Qiu Hangyu Chen Junqiang Shen Junpeng Zhang Jing Cha Fuwen Qiu Chunsheng Jing 2021Acta Oceanologica Sinica2021,40,11:0
14An optical thermometer with high sensitivity and superior signal discriminability based on dual-emitting Ce^(3+)/Eu^(2+)co-doped La5Si2BO13 thermochromic phosphor显示文摘A novel non-contact optical thermometer,qualified with high sensitivity and temperature resolution,is urgently needed for temperature measuring of micro devices,moving objects and specific severe environments.Hence,a series of dual-emitting La_(5)Si_(2)BO_(13):Ce^(3+),Eu^(2+)phosphors were synthesized.The two ions show diverse responses with the changing in temperature.The variational emissions of Ce^(3+)and Eu^(2+)can be converted to FIR(fluorescence intensity ratio)signals.The maximal absolute sensitivity Sa and relative sensitivity Sr reach up to 0.07526%/K and 3.2241%/K,respectively.It is worthy noting that the Sa and Sr possess the same variation tendency and both have high values in the low temperature region(293-373 K),showing the great temperature measuring property especially in low temperature region.The temperature sensing characteristics are superior to the results of most previous reports.The energy transfer(ET)process is certified to occur from Ce^(3+)to Eu^(2+)ions.These studies indicate that La_(5)Si_(2)BO_(13):Ce^(3+),Eu^(2+)phosphor could have a good prospect for optical thermometry.Fuwen Liu Ying Tian Degang Deng Ming Wu Bowen Chen Liuyan Zhou Shiqing Xu 2021Journal of Rare Earths2021,39,11:0
15Sm-Nd,Pb-Pb and Rb-Sr Isotopic Dating and Its Dynamic Implications for the Proterozoic Augen Granite in the Yunkai Area,Western Guangdong Province显示文摘The samples of ductile-rheologic deformational augen granite from the Yunkai uplift area, western Guangdong province, were determined by the whole-rock Sm-Nd, Pb-Pb and Rb-Sr isotopic dating to have an Sm-Nd isochron age of 1414±68 Ma, a Pb-Pb isochron age of 1388±90 Ma and a Rb-Sr isochron age of 490±36 Ma. The first two ages are interpreted as the formation age of this suite of granite and the last age represents the timing of the tec-tono-thermal event of Caledonian ductile-rheologic shear partial melting. It is indicated that in the study area not only an orogeny took place in the Caledonian, but also a more important tectono-magmatic activity occurred in the Meso-proterozoic there , which may be related to the subduction-collision between the Yangtze block and Cathaysia block.PENG Songbai ZHANG Yeming ZHAN Mingguo CHEN Fuwen QIU Ruizhao 2000Acta Geologica Sinica(English Edition)2000,74,2:0
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