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Science china Earth {1. 2004年第9期47卷 794-803页

作者： zhang yueqiao1, chen wen2. 3.& yang nong1 1. institute of geomechanics, chinese academy of geological sciences, beijing 100081, china 2. institute of Geology, chinese academy of geological sciences, beijing 100037, china 3. institute of Geology and Geophysics, chinese academy of sciences, beijing 100029, china institute of {1. Chinese Academy of Geological Sciences Beijing China institute of Geology Chinese Academy of Geological Sciences Beijing China institute of Geology and Geophysics Chinese Academy of Sciences Beijing China

Based on field geological survey, structural measurements and classical Ar/Ar dating of mica, biotite and K-feldspar, we obtain cooling ages for Miocene left-lateral shear along the Xianshuihe fault zone. The results document two thermal events during the sinistral shear. The early event (1.-1. Ma) corresponds to rapid cooling of the Zheduoshan granitic massif from above 700℃ to below 350℃. The late event (5-3.5 Ma) corresponds to cooling of granites intruded along the eastern side of the fault zone. These dating results provide important thermochronological constraint on the timing of late Cenozoic eastward extrusion of the Chuan-Dian Block in the SE Tibetan margin.

关键词： Xianshuihe fault zone, Zheduoshan granitic massif, sinistral shear deformation, 40Ar/39Ar dating, late Cenozoic.

A new species of Leptocycas (Zamiaceae) from the Upper Triassic sediments of Liaoning Province,china

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Journal of Systematics and Evolution 2010年第4期48卷 286-301页

作者： 1,2,3Jian-Wei zhang 2Jian-Xin YAO 1Jia-Rui chen 1cheng-Sen LI 1(State Key Laboratory of Systematic and Evolutionary Botany,institute of Botany,chinese academy of sciences,beijing 100093,china) 2(State Key Laboratory of Stratigraphy and Paleontology,institute of Geology,chinese academy of geological sciences,beijing 100037,china) 3(Graduate University,chinese academy of sciences,beijing 100049,china) (State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing 100093 China) (State Key Laboratory of Stratigraphy and Paleontology Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China) (Graduate University Chinese Academy of Sciences Beijing 100049 China)

A new cycad,Leptocycas yangcaogouensis ***.,was found in sediments from the Late Triassic in western Liaoning,*** pinnately compound leaves(Pseudoctenis type)are screwed in a crown on the stem *** leaflets are linear,with parallel veins and decurrent bases on the *** leaf bases are *** cataphylls intermix with the *** female cone is ovoid in *** characteristics of the new plant are more similar to those of Leptocycas gracilis,a Triassic cycad from North America,but the new species differs from *** in the size of its stem(7–8 vs.3–5 cm in diameter,respectively),leaves(length×width 1.0×1. vs.30×7 cm,respectively)and leaf density along the stem(4–6 vs.1.2 bases/1.cm length,respectively).Both *** and ***,having leaves of the Pseudoctenis type,show a closer relationship to the extant Dioon of *** present study provides evidence for the origin of the genus Dioon,which may have come from Leptocycas plants of the *** would be assumed that the extent cycads in Zamiaceae originate from the pteridosperms in the Late Paleozoic and have evolved through the stage of *** and *** in Late Triassic,and reaching the extant Dioon.

关键词： china Cycadales Leptocycas Upper Triassic Zamiaceae

Quantitative prediction model for the depth limit of oil accumulation in the deep carbonate rocks:A case study of Lower Ordovician in Tazhong area of Tarim Basin

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Petroleum Science 2024年第1期21卷 115-124页

作者： wen-{1. Wang Xiong-Qi Pang Ya-Ping Wang zhang-Xin chen Fu-Jie Jiang Ying chen State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Research institute of Exploration and Development PetroChina Southwest Oil&Gas Field CompanyChengdu610041SichuanChina Chemical and Petroleum Engineering Schulich School of EngineeringUniversity of CalgaryCalgaryT2N 1N4Canada

With continuous hydrocarbon exploration extending to deeper basins,the deepest industrial oil accumulation was discovered below 8,200 m,revealing a new exploration ***,the extent to which oil exploration can be extended,and the prediction of the depth limit of oil accumulation(DLOA),are issues that have attracted significant attention in petroleum *** it is difficult to characterize the evolution of the physical properties of the marine carbonate reservoir with burial depth,and the deepest drilling still cannot reach the ***,the DLOA cannot be predicted by directly establishing the relationship between the ratio of drilling to the dry layer and the *** this study,by establishing the relationships between the porosity and the depth and dry layer ratio of the carbonate reservoir,the relationships between the depth and dry layer ratio were obtained *** depth corresponding to a dry layer ratio of 1.0%is the *** on this,a quantitative prediction model for the DLOA was finally *** results indicate that the porosity of the carbonate reservoir,Lower Ordovician in Tazhong area of Tarim Basin,tends to decrease with burial depth,and manifests as an overall low porosity reservoir in deep *** critical porosity of the DLOA was 1.8%,which is the critical geological condition corresponding to a 1.0%dry layer ratio encountered in the *** depth of the DLOA was 9,000 *** study provides a new method for DLOA prediction that is beneficial for a deeper understanding of oil accumulation,and is of great importance for scientific guidance on deep oil drilling.

关键词： Deep layer Tarim Basin Hydrocarbon accumulation Depth limit of oil accumulation Prediction model

Petrogenesis and dating of the Kangding complex,Sichuan Province

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Science china Earth {1. 2005年第5期48卷 622-634页

作者： chen Yuelong 1 , LUO Zhaohua 1 , ZHAO Junxiang, LI Zhihong, zhang Hongfei & SONG Biao 3 1. Faculty of Earth sciences and Natural Resources, china University of Geosciences, beijing 100083, china 2. Faculty of Earth sciences, china University of Geosciences, Wuhan 430074, china 3. beijing SHRIMP Center, institute of Geology, chinese academy of geological sciences, beijing 100037, china Faculty of Earth sciences and Natural Resources China University of Geosciences Beijing China Faculty of Earth sciences China University of Geosciences Wuhan China beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing China

An analysis of major and trace element geochemistry and SHRIMP U-Pb zircon dating of mafic, intermediate, and felsic rocks from the Mianning metamorphic complex of Si- chuan Province was conducted. One of our conclusions is that a majority of the zircons crystal- lized between 721.and 773 Ma in a magmatic regime. The complexes contain early to late Pa- leo-proterozoic relict zircons from ancient continental crust. The oldest age, 2468 Ma, may rep- resent the basement of the yangtze block. Overgrowth zircon rims and palingenetic zircons have been observed and dated, and are believed to have formed after crystallization, during Paleozoic and Mesozoic metamorphic-anatexis. We also conclude that depletion of Nb, Ta, HREE, in a spider-diagram normalized to primitive mantle and calc-alkaline association, implies that they formed in island-arc or under-plating settings.

关键词： Kangding complex, zircons, SHRIMP, tectonic setting.

Better use of experience from other reservoirs for accurate production forecasting by learn-to-learn method

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Petroleum Science 2024年第1期21卷 716-728页

作者： Hao-chen Wang Kai {1. Nancy chen wen-Sheng Zhou chen Liu Ji-Fu Wang Li-Ming {1. Zhi-Gang Yu Shi-Ti Cui Mei-Chun yang china University of Petroleum(East{1.) 66 Changjiang West RoadQingdao West Coast New AreaQingdao266580ShandongChina University of Calgary 2500 University Dr NWCalgaryT2N 1N4AlbertaCanada Qingdao University of Technology Qingdao266071ShandongChina State Key Laboratory of Offshore Oil Exploitation Beijing100028China CNOOC Research institute Ltd. Beijing100028China CNPC Tarim Oilfield Branch Company Korla841000XinjiangChina National Engineering Laboratory for Exploration and Development of Low-Permeability Oil and Gas Fields Xi'an710000ShaanxiChina Sinopec Matrix Co. LTDQingdao266000ShandongChina

To assess whether a development strategy will be profitable enough,production forecasting is a crucial and difficult step in the *** development history of other reservoirs in the same class tends to be studied to make predictions ***,the permeability field,well patterns,and development regime must all be similar for two reservoirs to be considered in the same *** results in very few available experiences from other reservoirs even though there is a lot of historical information on numerous reservoirs because it is difficult to find such similar *** paper proposes a learn-to-learn method,which can better utilize a vast amount of historical data from various ***,the proposed method first learns how to learn samples before directly learning rules in ***,by utilizing gradients from networks with independent parameters and copied structure in each class of reservoirs,the proposed network obtains the optimal shared initial parameters which are regarded as transferable information across different *** on that,the network is able to predict future production indices for the target reservoir by only training with very limited samples collected from reservoirs in the same *** cases further demonstrate its superiority in accuracy to other widely-used network methods.

关键词： Production forecasting Multiple patterns Few-shot learning Transfer learning

An ionic liquid-assisted strategy for enhanced anticorrosion of low-energy PEO coatings on magnesium–lithium alloy

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Journal of Magnesium and Alloys 2024年第6期12卷 2380-2396页

作者： You zhang Chuping {1. Haoyue Tian Shuqi Wang {1. wen Fei {1. College of New Materials and Chemical Engineering Hydrogen Energy Research CentreBeijing Institute of Petrochemical TechnologyBeijing 102617China Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China beijing Spacecrafts China Academy of Space TechnologyBeijing 100190China

A low-energy plasma electrolytic oxidation(LePEO)technique is developed to simultaneously improve energy efficiency and *** liquids(1.butyl-3-methylimidazole tetrafluoroborate(BmimBF_(4)))as sustainable corrosion inhibitors are chosen to investigate the corrosion inhibition behavior of ionic liquid(ILs)during the LePEO process for LA91.magnesium-lithium(Mg-Li)*** show that the ionic liquid BmimBF_(4)participates in the LePEO coating formation process,causing an increment in coating thickness and surface *** low conductivity of the ionic liquid is responsible for the voltage and breakdown voltage increases during the LePEO with IL process(LePEO-IL).After adding BmimBF_(4),corrosion current density decreases from 1.1.9×1.^(−4)A·cm^(−2)to 8.1.3×1.^(−6)A·cm^(−2).The impedance modulus increases to 1.048×1.^(4)Ω·cm^(−2)and neutral salt spray remains intact for 24 *** superior corrosion resistance of the LePEO coating assisted by ionic liquid could be mainly attributed to its compact and thick barrier layer and physical absorption of ionic *** ionic liquid-assisted LePEO technique provides a promising approach to reducing energy consumption and improving film performance.

关键词： Magnesium-lithium alloy Plasma electrolytic oxidation Low energy Ionic liquid Corrosion resistance

SEDIMENTARY PROCESS OF THE CENOZOIC BASIN AND ITS RESPONSE TO THE SLIP-HISTORY OF THE ALTYN TAGH FAULT, NW china

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地学前缘 2000年第S1期7卷 245-246页

作者： chen Zhengle 1. {1. yueqiao 1. chen Xuanhua 1.Wang Xiaofeng 1. Z.Washburn 2,J.Arrowsmith 2[WT5,5”BX](1.The institute of geomechanics, chinese academy of geological sciences, beijing 100081,china 2.Department of Geology, Arizona State Unive

The NEE\|striking Altyn Tagh Fault (ATF) has been well known as one major point to know the growth history of the Tibetan plateau. Lots of investigations done since 1.70’s were mostly focus on active features, particularly on determining slip, slip rate and their distribution along the fault. However, Cenozoic slip\|history of this fault remains poorly understood, and the age of initiation and total offset are controversial. Several Cenozoic sedimentary basins develop in Suo’erkulinan to Mangya regions (Fig.1.. Their sedimentary processes are closely related with the ATF. The studies of the Neogene sedimentary sequences and the reconstruction of the paleo\|geography are essential to establish the displacement history of the fault during Late *** at the southern side of the ATF, the Suo’erkulinan basin consists of more than 600\|meter\|thick Pliocene Shizigou Formation below and about 1.0\|meter\|thick Early to Middle Pleistocene Qigequan Formation above according to the 1.200000 geological map by Xinjiang Province. An obvious erosional surface can be seen on the top of the lower sequence. Sediments in the Shizigou Formation are characterized by 400\|meter\|thick yellow to red cobble\|sized conglomerates in the bottom, up\|grading to sandstones and grey\|green mudstones. This indicated that the sedimentary facies changed from alluvial fan to fluvial fan and sediments became more and more mature. The upper sequence, the Qigequan Formation, corresponds to an alluvial facies series composed of yellow to white cobble\|sized conglomerates intercalated with lenticular sandstones. Paleo\|current indicators showed that the Shizhigou conglomeratic series were sourced from northwest. Well\|developed syn\|sedimentary faults, normal faults mostly inherited from syn\|sedimentary faults, and some striation lineations on the surface indicated transtensional tectonic environment of the strike\|slip faulting.

关键词： Altyn Tagh fault Cenozoic basins sedimentary process slip\| history reconstruction of the paleo\|geography

CENOZOIC DISPLACEMENT HISTORY OF THE ALTYN TAGH FAULT:geological EVIDENCE FROM FIELD OBSERVATIONS IN SOUERKULI AND MANGAR REGIONS, NW{1.

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地学前缘 2000年第S1期7卷 210-211页

作者： zhang {1. 1. chen Zhengle 1. Z.Washburn 2, Wang Xiaofeng 1. J. R.Arrowsmith 2(1.The institute of geomechanics, chinese academy of geological sciences, beijing 100081, china 2.Department of Geology, Arizona State University, Tempe, AZ, 85287,USA

The ENE\|striking Altyn Tagh Fault (ATF) has been well known as a large, active left\|lateral strike\|slip fault that bounds the thrusting systems in NE *** fault has been the focal point in the debate between the discrete extrusion vs. distributed crustal shortening models. Although its active left\|lateralstrike\|slip features have been largely investigated and well documented by both satellite imagery and air\|photo interpretations and field observations, little study has been done upon its Cenozoic displacement history. Questions about the age of initiation and total offset accumulated on the fault remain controversial. A key area to resolve such question is located along the central segment of the fault in the Souerkuli and Mangar regions, where Neogene sedimentary basins well develop and are mostly distributed in three zones, namely from east to west: the Gobiling, Yitunbulak and Yusuale Tagh (Fig.1.. Our field investigations were conducted along the ATF cutting the Yitunbulak and Gebiling Neogene sedimentary basins. Two stratigraphic unconformities observed within this Neogene conglomeratic series allow a separation of three major stratigraphic sequences and record the initiation and major deformational episodes of ATF during Cenozoic. An early stratigraphic unconformity occurred between a yellow depositional series below and early Pliocene red\|colored conglomeratic mudstones above. A later stratigraphic unconformities occurred between early and late Pliocene sedimentary series. The lower series below the early stratigraphic unconformities is mainly composed of a conglomeratic rocks containing cobbles and pebbles of basement rock units (mostly mylonitic granites, limestones and quartzes); this series has been poorly mapped and dated; its age could be assigned to late Oligocene to early Miocene; this series tilts to NW with an angle of about 30° and is overlain in angular unconformity by early Pliocene pebble\|sized conglomerates. A weathering zone on

关键词： left\|lateral offset Cenozoic Altyn Tagh fault

Identification of AtENT3 as the main transporter for uridine uptake in Arabidopsis roots

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Cell Research 2006年第4期16卷 377-388页

作者： Kun Ling chen~(1,2,*) Min Xin Xu~(2,3,*) Guang Yong Li~(2,3,*) Hui Liang~2 Zong Liang Xia~(2,3) Xin Liu~2 Ji Shu zhang~1 Ai Min zhang~2 Dao wen Wang~2 ~1School of Life sciences,Northwest Agricultural and Forestry University,yangling 712100,china ~2Center for Plant Gene Research(beijing)and the State Kev Laboratory of Plant Cell and Chromosome Engineering,institute of Genetics and Developmental Biology,chinese academy of sciences,Datun Road,Chaovang District,beijing 100101,china ~3Graduate School of the chinese academy of sciences,Yuquan Road,Shijingshan District,beijing 100039,china School of Life sciences Northwest Agricultural and Forestry University Yangling China Center for Plant Gene Research (beijing) and the State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences Datun Road Chaoyang District Beijing China Graduate School of the chinese {1. of sciences Yuquan Road Shijingshan District Beijing China

Previous studies have shown that Arabidopsis equilibrative nucleoside transporters （AtENTs） possess transport activitieswhen produced in yeast cells and are differentially expressed in Arabidopsis ***,we report further analysis onthe nucleoside transport activities and transcriptional patterns of AtENT *** recombinant proteins of AtENTs3,6,and 7,but not those of AtENTs 1.2,4,and 8,were found to transport thymidine with high *** to previ-ous suggestion that AtENT1.may not transport uridine,this work showed that recombinant AtENT1.was a pH-dependentand high-affinity transporter of *** grown on MS plates,the AtENT3 knockout plants were more tolerant tothe cytotoxic uridine analog 5-fluorouridine than wild-type plants and the knockout plants ofAtENT 1.or ***-sistent with this observation,the AtENT3 knockout line exhibited a significantly decreased ability to take up [3H]uridinevia the roots when compared with wild-type plants and the plants with mutated AtENT 1.or *** indicates thatAtENT3,but not AtENTs 1.and 6,is the main transporter for uridine uptake in Arabidopsis *** transcription ofAtENTs 1.3,4,6,7,and 8 was regulated in a complex manner during leaf development and *** contrast,thesix AtENT members were coordinately induced during seed *** work provides new information on thetransport properties of recombinant AtENT proteins and new clues for future studies of the in vivo transport activitiesand physiological functions of the different ENT proteins in Arabidopsis plants.

关键词： Arabidopsis equilibrative nucleoside transporter expression pattern nucleoside transport functional analysis

Data-driven mapping-relationship mining between hardness and mechanical properties of dual-phase titanium alloys via random forest and statistical analysis

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Rare Metals 2024年第2期43卷 829-841页

作者： Hai-Chao Gong Qun-Bo Fan Hong-Mei zhang Xing-Wang {1.g wen-Qiang Xie Kai {1. Lin yang Jun-Jie zhang Bing-Qiang Wei Shun Xu School of Materials Science and Engineering Beijing Institute of TechnologyBeijing100081China National Key Laboratory of Science and Technology on Materials Under Shock and Impact Beijing100081China beijing {1. of Technology Chongqing Innovation Center Chongqing401135China Department of Mechanical and Materials Engineering University of Nebraska-LincolnLincolnNE68588USA

In order to accelerate the research on the property optimization of titanium alloy based on high-throughput methods,it is necessary to reveal the relationship between hardness and other mechanical properties which is still *** this work,taking Ti20C alloy as research object,almost all the microstructure of dual-phase titanium alloys were covered by traversing over 1.0 heat treatment ***,massive experiments including microstructure characterization and performance test were conducted,obtaining 51.590 pieces of microstructure data and 3591.pieces of mechanical property ***,based on large-scale data-driven technology,the quantitative mapping relationship between hardness and other mechanical properties was deeply *** results of random forest models showed that the correlation between hardness(H)and Charpy impact energy(A_(k))(or elongation,A)was hardly dependent on the microstructure types,while the relationship between H and tensile strength(R_(m))(or yield strength,R_(p0.2))was highly dependent on microstructure ***,combined with statistical analysis,it was found that the relationship between H and Ak(or A)were negatively ***,the relationship between H and strength was positively linear for equiaxed microstructure,and strength was linked to d^(−1.2)(d,equivalent circle diameter)ofα-grains in the form of classical Hall–Petch formula;but for other microstructures,the relationships were ***,the above rules were nearly the same in the rolling direction and transverse ***,a"four-quadrant partition map"between H and R_(p0.2)/R_(m) was established as a versatile material-screening tool,which can provide guidance for on-demand selection of titanium alloys.

关键词： Dual-phase titanium alloy Data-driven Hardness Mapping relationship