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| 1 | Depositional chemistry of chert during late Paleozoic from western Guangxi and its implication for the tectonic evolution of the Youjiang Basin显示文摘Continual deep-water sediments from the late Early Devonian to the Late Permian extended in wide areas of western Guangxi.We analyzed the major,trace,and rare earth elements of the Upper Paleozoic cherts in Badu,western Guangxi.High non-terrigenous SiO2 contents(Sinon-ter/Sibulk(%)> 80%) and pure chert components(> 70%) indicate a large extent of silicification in the Upper Paleozoic cherts,except for the Upper Devonian-Lower Carboniferous Luzhai Formation cherts,which have lower non-terrigenous SiO2 contents(avg.71.8%) and pure chert components(40%-70%).The Al/(Al+Fe+Mn) ratios and Feter/Febulk(%) values of samples from the lowest horizon of the Pingen Formation are 0.05-0.26,13.1%-14.5%,respectively,indicating hydrothermal origins.All other samples show high Al/(Al+Fe+Mn) ratios(0.39-0.81) and high Feter/Febulk(%) values(23.1%-186.8%),indicating non-hydrothermal origins.The Pingen Formation and Liujiang Formation cherts show slightly-moderately negative Ce anomalies(0.71±0.07,0.81±0.08,respectively) and higher Y/Ho ratios(33.49±1.27,36.10±2.05,respectively) than PAAS.This suggests that these cherts were deposited in the open marine basin,rather than in the intracontinental rift basin as previously assumed.The Luzhai Formation cherts may be deposited near the seamount or seafloor plateaus with no negative Ce anomalies(1.09±0.07) and no significant Y-Ho fractionation(Y/Ho=28.60±1.25).The Nandan Formation and Sidazhai Formation cherts were deposited in the open-ocean basin with moderately negative Ce anomalies(0.67±0.08,0.73±0.11,respectively) and high Y/Ho ratios(36.01±1.00,32.00±2.25,respectively).On the basis of our studies about cherts,we conclude that the Youjiang Basin originated as part of the Paleo-Tethys that controlled the depositional environments of cherts during late Paleozoic.The rift of the Youjiang Basin had occurred at least since the Early-Middle Devonian.The basin had a trend of evolving into an open-ocean basin during the Early-Middle Permian. | HUANG Hu DU YuanSheng HUANG ZhiQiang YANG JiangHai HUANG HongWei XIE ChunXia HU LiSha | 2013 | Science China Earth Sciences2013，56，3： | 20 |
| 2 | Sedimentary geochemistry and provenance of the Lower and Middle Devonian Laojunshan Formation,the North Qilian Orogenic Belt显示文摘The Laojunshan Formation is a suite of molasse formed during the rapid uplift of the North Qilian Orogenic Belt (NQOB). Forty-one samples of sandstone have been collected from the Sunan and Minle sections in the western sector and the Gulang and Jingyuan sections in the eastern sector of the NQOB belt. Geochemical analyses of those samples indicated: 1) The MgO+Fe2O3T and Al2O3/SiO2 values are higher, and K2O/Na2O ratios are lower in the western sector than those in the eastern sector. 2) All of them are depleted in Nb and Ta elements. The samples from the western sector are depleted in Rb element and enriched with Sc, Co, Ni, V, and Cr elements in the Upper Crust-normalized patterns. However, those from the eastern sector are depleted in Sr without enrichments of Sc, Co, Ni, V, and Cr. 3) All of the samples display a right-inclined REE pattern af- ter Chondrite-normalized REE pattern. But LaN/YbN and Eu/Eu* ratios of the samples from the western sector are lower than those of the samples from the eastern sector. These geochemical characteristics suggest the prominent input of mafic clast with minor granitic rocks into the Sunan area, felsic clast into the Gulang and Jingyuan area, and both mafic and felsic clast into the Minle area. The angular shapes of gravels imply that these ill-sorted sediments were deposited near their sources without recy- cling. Geochemical features above also demonstrated that no major chemical weathering occurred for the western provenance, but deposits in the eastern sector resulted from low or middle degree chemical weathering. Evidences combining tectonic discriminations and comparisons with potential provenances revealed that sediments in the Sunan area were derived mainly from the North Qilian Continental arc, whereas sediments in the Minle, Gulang, and Jingyuan areas were derived not only from the North Qilian Continental arc but also from the basement of the Middle Qilian block. Integrated with the characteristics of development of Silurian and Devonian, these imply that the orogeny of NQOB is diachronous in the trending direction due to the oblique collision. | XU YaJun DU YuanSheng YANG JiangHai HUANG Hu | 2010 | Science China Earth Sciences2010，53，3： | 7 |
| 3 | A Novel Hybrid Seven-Level Converter for Permanent Magnet Synchronous Motor Driving System Based on Model Predictive Control显示文摘A novel hybrid three-phase seven-level converter is proposed in the paper.Each phase consists of a four-level bridge and a two-level H bridge,which contains ten switching devices and a floating capacitor.The circuit structure is introduced and working principle of the converter containing 14 commutation paths is analyzed,which is easy to control the floating capacitor voltage.In order to drive permanent magnet synchronous motor(PMSM)with the proposed converter,model predictive control(MPC)strategy is adopted.The control objectives such as controlling the currents of PMSM and capacitor voltages balancing are included in a cost function with two weight factors,which can control the currents of PMSM and balance the capacitor voltages simultaneously.To validate the proposed control scheme,simulations in two cases are carried out by using Matlab/Simulink software.Finally,the feasibility and efficiency in two cases are verified with the experimental test bench based on RT_LAB. | Yuansheng Hu Cungang Hu Pinjia Zhang Yunlei Zhang | 2019 | CES Transactions on Electrical Machines and Systems2019，3，4： | 6 |
| 4 | Regional Scale Seismological Investigation on the Continent Crust Using Airgun Sources——A Perspective Review显示文摘The investigations on the structure and temporal variations of the continent crust have been the long-lasting topics of seismology. The artificial sources play the most important role in these studies for their well-known locations and occur times among all the sources producing elastic waves,so that precise results are obtained. In past decades,we have successfully excited the airgun sources in on-land water bodies such as reservoirs,expanding their applications in marine seismology. Large volume airguns have been used to produce low frequency signals which can travel hundreds of kilometers after stacking,providing a source connecting the exploration seismology and traditional seismology at regional scale. In this review,we introduce the changes through which we turn the airgun into scientific instruments by experiments. We also present the advances on imaging the continental crust structure and monitoring the velocity variations using the highly repeatable signals emitted by airgun sources. The potential applications such as imaging the subsurface of urban areas and high resolution illuminating of mines are proposed and the challenges for further investigations are also discussed. | Wang Weitao Wang Baoshan Jiang Shengmiao Hu Jiupeng Zhang Yuansheng | 2018 | Earthquake Research in China2018，32，3： | 5 |
| 5 | New Zircon U-Pb Age of the Babu Ophiolites in Southeast Yunnan,China and Constrains of Plate Subduction Time显示文摘Objective The Babu ophiolite in Malipo County of southeastern Yunnan is interpreted as remanant ocean crust and represents a possible branch of Paleo-Tethyan Ocean in South China.It consists mainly of mafic and ultramafic rocks.These rocks are very important to understand the evolution of the Paleo-Tethyan Ocean.However,the Babu ophiolite is still disputed and the mafic and ultramafic rocks have been inferred to be part of the Emeishan large igneous province(LIP)by some researchers.In this paper,we present zircon U-Pb data on the metabasalts in | HUANG Hu DU Yuansheng YANG Jianghai YU Wenchao | 2017 | Acta Geologica Sinica(English Edition)2017，91，3： | 4 |
| 6 | Geochemistry of the Late Paleozoic cherts in the Youjiang Basin:Implications for the basin evolution显示文摘We analyzed the major and rare earth element compositions of siliceous deposits from the Upper Devonian Liujiang Formation,Lower Carboniferous Luzhai Formation,Lower-Middle Permian Sidazhai Formation and Tapi Formation,which are widely distributed as bedded cherts in the interplatform basinal successions of the Youjiang Basin.The Liujiang Formation and Luzhai Formation cherts generally have high Al/(Al+Fe+Mn) values(0.38-0.94) and are non-hydrothermal cherts.These cherts are generally characterized by moderately negative Ce anomalies and high Y/Ho values relatived to PAAS,indicating that the Youjiang Basin might have evolved into an open rift basin during the Late Devonian-Early Carboniferous.The Sidazhai Formation cherts from Ziyun generally have high Al/(Al+Fe+Mn) values(0.60-0.78),suggesting negligible contribution from a hydrothermal component.The Sidazhai Formation cherts from Hechi and the Tapi Formation cherts from Malipo generally have low Al/(Al+Fe+Mn) values(0.09-0.41),indicating an intense hydrothermal input.Relatived to the Sidazhai Formation cherts,the Tapi Formation cherts have higher Ce/Ce*values(0.68±0.19) and lower Y/Ho values(41.83±13.27),which may be affected by the terrigenous input from the Vietnam Block.The Sidazhai Formation cherts from Ziyun and Hechi exhibit negative Ce anomalies(0.43±0.12,0.33±0.17,respectively) with high Y/Ho values(57.44±16.20,46.02±4.27,respectively),resembling the geochemical characteristics of open-ocean basin cherts.These cherts were deposited on a passive continental margin adjacent to the Babu branch ocean,which may have contributed to upwelling.Detailed spatial studies on geochemical characteristics of the Late Paleozoic cherts can unravel the evolution of the Youjiang Basin. | Huang Hu Du Yuansheng Yang Jianghai Huang Hongwei Tao Ping Huang Zhiqiang Yu Wenchao Guo Hua | 2013 | Journal of Palaeogeography2013，2，4： | 4 |
| 7 | Geochemistry, geochronology and mineralization of the rare-metal granites in the Daping Ta-Nb deposit, Fujian Province, South China显示文摘1 Introduction Rare-metal granites are widely distributed in South China.The Daping porphyritic granitic Ta-Nb deposit,located in the Yongding area of south Fujian province,South China,is a large rare-metal deposit recently discovered.Few studies have been made of its petrology,mineralogy,geochemistry,chronology and metallogeny.In recent years,several exploratory drillings have been done in this deposit.These drilling holes,from 380 to | WANG Jinrong HU Yongbin HUANG Shufeng CHEN Bin YE Yuansheng LUO Xiaohua Lv Xinbiao | 2017 | Acta Geologica Sinica(English Edition)2017，91，S1： | 2 |
| 8 | A NEW TECHNIQUE—ELECTROMAGNETIC CENTRIFUGAL CASTING PROCESS显示文摘A new technique of centrifugal casting under electromagnetic field was firstly proposedand investigated.Taking a heat resisting alloy steel 25Cr20Ni and an Al-Cu alloyas examples,products,though their length,diameter and wall thickness are varied,re-vealed so superior macrostructures that the mechanical properties are much improved incomparison with conventional centrifugal casting. | GE Yunlong YANG Yuansheng JIAO Yuning HU Zhuangqi Institute of Metal Research,Academia Sinica,Shenyang,ChinaGAO Yunyan JIA Guanglin Northeast University of Technology,Shenyang,China associate professor,Institute of Low Energy Nuclear Physics,Beijing Normal University,Beijing,100875,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，11： | 2 |
| 9 | Detrital zircon of 4.1 Ga in South China显示文摘One hadean zircon from the Cambrian sandstone in the southern part of South China has a U-Pb age of 4107±29 Ma with ε Hf(t) value similar to that of the homochronous depleted mantle and Hf model age of 4102±21 Ma.This demonstrates the existence of hadean crustal remnant in South China.A close match between the U-Pb age and Hf model age with the highly position ε Hf(t) value indicates the growth and immediate reworking of juvenile crust from the depleted mantle at ca 4.1 Ga.The prominent 'Pan-African' and Grenville zircons derived from the exotic sources were also found in the sample,which indicates a linking between South China and Gondwana in the Cambrian period.The southern part of South China has complex histories of crustal growth and tectonic evolution. | XU YaJun DU YuanSheng HUANG HongWei HUANG ZhiQiang HU LiSha ZHU YanHui YU WenChao | 2012 | Chinese Science Bulletin2012，57，33： | 2 |
| 10 | Trace and rare earth elemental geochemistry of carbonate succession in the Middle Gaoyuzhuang Formation,Pingquan Section:Implications for Early Mesoproterozoic ocean redox conditions显示文摘The concentrations of redox-sensitive trace elements,such as uranium(U),vanadium(V),molybdenum(Mo),cobalt(Co),chromium(Cr) and rare earth elements(REE+Y) were determined in a given carbonate succession in the Gaoyuzhuang Formation(~1.56 Ga),which spans depths from outer shelf to intertidal,to explore the Early Mesoproterozoic ocean redox conditions.The values of the Zr-normalized redox-sensitive trace element concentrations and some relevant ratios show obvious changes from bottom to top in the succession.Samples from the outer shelf setting(M1 interval) demonstrate significantly enhanced values in Zr-normalized redox-sensitive trace element concentrations and relevant ratios(the peaks of Mo/U,V/Cr and Ni/Co ratios larger than 8,4.25,and 7,respectively).Authigenic framboidal pyrites were also found within oncolite-like carbonate concretions and surrounding host rocks in this interval.These all indicate a euxinic state in the outer shelf environment.Less enrichment of Zr-normalized redox-sensitive elemental abundances and a mild decrease in the values of geochemical ratios were present in the inner shelf environment(M2 interval)(the V/Cr and Ni/Co ratios fall into a range of 2.5 4.25 and 4 5,respectively),suggesting dysoxic conditions dominant in the inner shelf setting.Samples from the shallower subtidal and intertidal settings(M3 and M4 intervals) are mostly invariable with much lower values of Zr-normalized redox-sensitive elements and relevant ratios,with the V/Cr and Ni/Co ratios typically near or less than 2 and 5 respectively,indicative of oxic conditions in the high energy subtidal/intertidal zones.A remarkable negative Ce anomaly exhibited in the shale-normalized REE+Y diagram in the M4 interval may provide evidence in support of the hypothesis.Taken together,our results suggest a relatively shallow chemocline in the Early Mesoproterozoic ocean:the transitions between euxinic,dysoxic and oxic may occur in quiet-water outer shelf and highenergy subtidal zone,respectively.The presence of euxinic ocean bottom waters is compatible with low concentrations of seawater sulfate and reduced levels of atmospheric oxygen during this period.The extreme environmental conditions induced by these anoxic oceans could have been responsible for the delayed oxygenation of the biosphere and hindered the evolution of multicellular life. | Guo Hua Du Yuansheng Zhou Lian Yang Jianghai Huang Hu | 2013 | Journal of Palaeogeography2013，2，2： | 2 |
| 11 | A chaotic image encryption scheme owning temp-value feedback显示文摘 | Leo Yu Zhang Xiaobo Hu Yuansheng Liu Kwok-Wo Wong Jie Gan | 2014 | Communications in Nonlinear Science and Numerical Simulation2014，，10： | 1 |
| 12 | Robust biological nitrogen removal by creating multiple tides in a single bed tidal flow constructed wetland显示文摘 | Hu Yuansheng Zhao Yaqian Rymszewicz Anna | 2014 | Science of The Total Environment2014，470，： | 1 |
| 13 | High rate nitrogen removal in an alum sludge-based intermittent aeration constructed wetland 显示文摘 | Yuansheng Hu Yaqian Zhao Xiaohong Zhao | 2012 | Environmental Science and Technology2012，46，8： | 1 |
| 14 | Crystallization and spectroscopic properties investigation of Er3+ doped transparent glass ceramics containing CaF2显示文摘 | Hu Zhongjian Wang Yuansheng Ma En | 2006 | Mater Res Bull2006，41，： | 1 |
| 15 | Comprehensive analysis of step-feeding strategy to enhance biological nitrogen removal in alum sludge-based tidal flow constructed wetlands 显示文摘 | HU Yuansheng ZHAO Yaqian ZHAO Xiaohong | 2012 | Bioresource Technology2012，111，3： | 1 |
| 16 | 显示文摘 | Bao Feng Wang Yuansheng Hu Zhongjian | 2005 | Mater Res Bull2005，40，： | 1 |
| 17 | Achieving high- rate autotrophic nitrogen removal via Canon process in a modified single bed tidal flow constructed wetland 显示文摘 | HU Yuansheng ZHAO Xiaohong ZHAO Yaqian | 2014 | Chemical Engineering Journal2014，237，20： | 1 |
| 18 | New Zircon U-Pb Age of Late Devonian Tuff in Guangxi, South China and the Significance for the Paleo-Tethys Branch Ocean显示文摘Objective The eastern extending range of the Paleo-Tethys Ocean in southwest China has always been focused and controversial.At the beginning of this century some scholars proposed that the Paleo-Tethys Branch Ocean may extend to the Babu–Pingxiang and Cengxi areas along the stouthwestern margin of the South China Block(Cai and Zhang,2009).However,the pivotal proof of | HU Lisha DU Yuansheng XU Yajun WANG Zhiwen WANG Chenghao | 2018 | Acta Geologica Sinica(English Edition)2018，92，1： | 1 |
| 19 | Robust biological nitrogen removal by creating multiple tides in a single bed tidal flow constructed wetland 显示文摘 | HU Yuansheng ZHAO Yaqian RYMSZEWICZ A | 2014 | Science of the Total Environment2014，，： | 1 |
| 20 | Immunoglobu-lin A nephropathy in horseshoe kidney: case reports and litera-ture review显示文摘 | Panpan Hu Meiling Jin Yuansheng Xie | 2014 | Nephrology2014，19，10： | 1 |
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