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Science China Earth Sciences 2004年第10期47卷 886-895页

作者： TANG Liangjie1.2, JIA Chengzao3, PI Xuejun4, CHEN Suping1.2, WANG Zhiyu5, XIE huiwen4 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry, Beijing 1.2249, China 2. Basin & Reservoir Research Center, University of Petroleum, Beijing 1.2249, China 3. PetroChina Company Limited, Beijing 1.001., China 4. Tarim Oilfield Company, PetroChina Company Ltd., Kurle 841.00, China 5. Department of Geology, University of Petroleum, Beijing 1.2249, China 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry 102249 Beijing China 2. Basin & Reservoir Research Center University of Petroleum 102249 Beijing China 3. PetroChina Company Limited 100011 Beijing China 4. Tarim Oilfield Company PetroChina Company Ltd. 841000 Kurle China 5. Department of Geology University of Petroleum 102249 Beijing China

The salt beds of Lower Tertiary developed in the mid-segment of Kuqa foreland fold belt, northern Tarim basin. They considerably controlled structural deformation of the belt. Ac- cording to the field observation, seismic profile interpretation and drilling data, three different structural styles of supra-salt, intra-salt and sub-salt occurred in the Kuqa foreland fold belt. Su- pra-salt structural styles mainly include thrust faults and fault-related sags. Intra-slat structural styles essentially are salt-pillows, intra-salt faults and folds, and salt weld structures. Sub-salt structural styles mainly consist of imbricated thrust faults, duplex structures, pop-up and fault-related folds. It is indicated that great differences exist among supra-salt, intra-salt and sub-salt structures of Kuqa foreland fold belt. The salt-related structures were formed in the same structural stress field. The dynamic mechanism of the salt-related structures is mainly associated with gravitation, compression and plastic flow of salt beds.

关键词： salt-related structural style, supra-salt structure, intra-salt structure, sub-salt structure, Kuga foreland fold belt.

Effect of cerium on microstructure,texture and properties of ultrahigh-purity copper

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Journal of Rare Earths 2024年第1期42卷 220-227,I0008页

作者： Yunxiao Hua Haitao Liu Kexing Song Jiangwei Wang Yin'gang Guo Jing Tian huiwen Guo Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology School of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang471023China Henan Academy of Sciences Zhengzhou450000China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China Henan Zhongyuan Gold Smelter Co. Ltd.Sanmenxia472100China Chinalco Luoyang Copper Processing Co. Ltd.Luoyang471039China

The effects of Ce addition(31. ppm and 1.00 ppm)on the microstructure,texture and properties of ultrahigh-purity copper(99.99999%)were systematically studied using scanning electron microscopy(SEM),transmission electr... 详细信息

The effects of Ce addition(310 ppm and 1500 ppm)on the microstructure,texture and properties of ultrahigh-purity copper(99.99999%)were systematically studied using scanning electron microscopy(SEM),transmission electron microscopy(TEM)and electron backscattered diffraction(EBSD)analyses,combined with the microhardness and conductivity *** the microstructure of the as-cast and as-extruded samples,the addition of Ce refines the grain size of the ultrahigh-purity copper and the refinement effect of 310Ce alloy is greater than that of 1500Ce *** is due to the stronger compone nt supercooling and the accele rated recrystallization caused by lower Ce co *** addition,Ce can react with Cu to form the Cu-Ce eutectic phases,which are deformable during the hot ***,the added Ce can weaken the texture,showing a variation of brass recrystallization(BR),rotated cube,copper and S texture components,which depends on the recrystallization,the particle stimulated nucleation(PSN)as well as the stacking fault energy(SFE).Most remarkably,the introduction of Ce enhances the hardness of the ultrahigh-purity copper without obviously reducing its *** major{111}orientations and the stress distributions are responsible for such a superior conductivity of the Ce-containing alloys.

关键词： Ce addition Grain refinement Texture Conductivity Ultrahigh-purity copper Rare earths

Sn-decorated CeO_(2) with different morphologies for direct dehydrogenation of ethylbenzene

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Journal of Rare Earths 2024年第1期42卷 102-109,I0004页

作者： Kai Zhang Guoju Cui Mengzhen Yuan huiwen Huang Ning Li Jiale Xu Guowei Wang Chunyi Li State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao266580China Petrochemical Plant of Sinopec Shengli Oilfield Company Dongying257237China College of Chemical and Biological Engineering Shandong University of Science and TechnologyQingdao266590China

Three Sn-decorated ceria catalysts with various morphologies(rods,particles,and cubes)were prepared and applied to the direct dehydrogenation of ***-technology characterizations,including X-ray photoelectro n spectroscopy(XPS),H_(2)-tempe rature programmed reduction(H_(2)-TPR),and Raman spectroscopy,prove that the oxygen vacancies are the active sites for ethylbenzene dehydrogenation,which can be regulated by engineering CeO_(2) morphology and enhanced via introducing metal *** the results of activity test,the catalytic activities for ethylbenzene dehydrogenation over different samples are closely dependent on the amount of oxygen *** reduced Sn-decorated CeO_(2) catalyst with nanoparticles morphology exhibits better dehydrogenation performance than the other two studied catalysts at 600℃.This work provides an effective approach to regulate the active oxygen vacancies and further enhance the dehydrogenation activities through engineering the surface morphology of the catalyst and introducing suitable additives.

关键词： Ethylbenzene dehydrogenation CeO_(2) Sn Morphology Oxygen vacancy Rare earths

Influence of ion size on the charge storage mechanism of MXenes:a combination of experimental and computational

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Waste Disposal and Sustainable Energy 2024年第2期6卷 163-171页

作者： huiwen Wan Rui Wang Huiyang Fan Hongbo Gao Yucheng Chen Zhu Liu State Key Laboratory of Clean Energy Utilization Institute for Thermal Power EngineeringCollege of Energy EngineeringZhejiang UniversityHangzhou 310027China China North Vehicle Research Institute No.4 HuaishulingFengtai DistrictBeijingChina ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China

MXene nanomaterials have attracted great interest as the electrode of ***,its energy storage mecha-nisms in organic electrolytes are still *** work investigated the size effect of cations(i.e.,Lit,Nat,K^(+),and EMIM^(+))on the capacitive behaviors of MXene-based *** experimental results demonstrate that the specific capacitance increases obviously with decreasing cation size(i.e.,from 43 F g^(-1.(EMIM^(+))to 1.9 F g^(-1.(Li^(+))at 2 mV s^(-1.).Density-functional theory calculation reveals a correlation between cation size and ion-electrode surface interaction,sup-porting experimental observations of the capacitive-dominant *** dynamics simulations reveal that the ionic solvation structure and desolvation degree of intercalated cations as a function of solvation size,providing dynamic insights into the experimentally observed specific capacitance *** comprehensive experimental and computational study provides valuable insights into the intricate solvation effects governing the charge storage *** finding of ion dynamics,solvation structure,and desolvation may contribute to guide the design and optimization of appropriate ions/electrolytes combinations for MXene-based supercapacitors.

关键词： MXene Cations Molecular dynamics simulation Density-functional theory calculation Supercapacitors

Channel erosion and its impact on environmental flow of riparian habitat in the Middle Yangtze River

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Environmental Science and Ecotechnology 2024年第4期20卷 229-236页

作者： Shanshan Deng Junqiang Xia Heng Zhu Jie Liang huiwen Sun Xin Liu State Key Laboratory of Water Resources Engineering and Management Wuhan UniversityWuhan430072China College of Environmental Science and Engineering Hunan UniversityKey Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangsha410082China

Evaluating environmental flow(EF)is pivotal for conserving and restoring riverine ***,prevalent EF evaluations presume that a river reach's hydraulic conditions are exclusively governed by inflow discharge,presupposing a state of equilibrium in the river *** presumption narrows the scope of EF evaluations in expansive alluvial rivers like the Middle Yangtze River(MYR),characterized by marked channel *** we show the profound channel erosion process and its impact on EF requirements for riparian habitats within the *** research unveils that:(i)pronounced erosion has led to a mean reduction of 1.0-2.7 m in the riverbed across four sub-reaches of the MYR;(ii)notwithstanding a 37-1.7%increase in minimal discharges post the Three Gorges Project,the lowest river stages at some hydrometric stations diminished owing to bed erosion,signifying a notable transformation in MYR's hydraulic dynamics;(iii)a discernible rightward shift in the correlation curve between the weighted useable area and discharge from 2002 to 2020 in a specific sub-reach of the MYR,instigated by alterations in hydraulic conditions,necessitated an increase of 1.00e2600 m^(3)s^(-1.in the required EF for the sub-reach;(iv)it is deduced that macroinvertebrate biomass rapidly decreases as the flow entrains the riverbed substrate,with the maximum survivable velocity for macroinvertebrates being contingent on their entrainment *** findings highlight the importance of incorporating channel morphological changes in devising conservation strategies for the MYR ecosystem.

关键词： Increased environmental flow requirement River bed level lowering Hydraulic condition change Middle Yangtze River

On the Praxis-Oriented Semiotic Aesthetics in Eastern European Marxism

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Contemporary Social Sciences 2024年第1期9卷 1-17页

作者： Li huiwen Jiangxi Normal University

Eastern European Marxism,taking a critical stance towards structuralism,gave rise to a unique paradigm of praxis-oriented semiotic *** novel approach posits that signs emerge from humans’social praxis and also function as a means of *** further delves into the principle governing the generation and usage of signs,i.e.,the Economy Principle,the homogenization of signs,the situatedness or contextual constraints,as well as their aesthetic features and transcendental *** a result,the praxis-oriented semiotic aesthetics within Eastern European Marxism exhibits distinct theoretical value.

关键词： Eastern European Marxism semiotics praxis aesthetics

Improved Efficiency and Stability of Organic Solar Cells by Interface Modification Using Atomic Layer Deposition of Ultrathin Aluminum Oxide

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Energy & Environmental Materials 2024年第3期7卷 282-290页

作者： Ai Lan Yiqun Li huiwen Zhu Jintao Zhu Hong Lu Hainam Do Yifan Lv Yonghua Chen Zhikuan Chen Fei Chen Wei Huang School of Flexible Electronics(Future Technologies)and Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech UniversityNanjing 210009China Department of Chemical and Environmental Engineering University of Nottingham Ningbo ChinaNingbo 315000China Key Laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingbo 315103China Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics(IFE)and Xi'an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi'an 710072China

The interfacial contacts between the electron transporting layers(ETLs)and the photoactive layers are crucial to device performance and stability for OSCs with inverted ***,atomic layer deposition(ALD)fabricated ultrathin Al_(2)O_(3)layers are applied to modify the ETLs/active blends(PM6:BTP-BO-4F)interfaces of OSCs,thus improving device *** ALD-Al_(2)O_(3)thin layers on ZnO significantly improved its surface morphology,which led to the decreased work function of ZnO and reduced recombination losses in *** simultaneous increase in open-circuit voltage(V_(OC)),short-circuit current density(J_(SC))and fill factor(FF)were achieved for the OSCs incorporated with ALD-Al_(2)O_(3)interlayers of a certain thickness,which produced a maximum PCE of 1..61..Moreover,the ALD-Al_(2)O_(3)interlayers had significantly enhanced device stability by suppressing degradation of the photoactive layers induced by the photocatalytic activity of ZnO and passivating surface defects of ZnO that may play the role of active sites for the adsorption of oxygen and moisture.

关键词： atomic layer deposition interface modification organic solar cells stability

Bias in Generative AI Systems:A 3-Layer Response and Liability Determination

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Contemporary Social Sciences 2024年第2期9卷 121-138页

作者： Tang Shuchen Jiang huiwen Tsinghua University Beijing100084China

The risk of bias is widely noticed in the entire process of generative artificial intelligence(generative AI)*** protect the rights of the public and improve the effectiveness of AI regulations,feasible measures to address the bias problem in the context of large data should be proposed as soon as *** bias originates in every part and various aspects of AI product lifecycles,laws and technical measures should consider each of these layers and take different causes of bias into account,from data training,modeling,and application *** Interim Measures for the Administration of Generative AI Service(the Interim Measures),formulated by the Office of the Central Cyberspace Affairs Commission(CAC)and other departments have taken the initiatives to govern ***,it lacks specific details on issues such as how to prevent the risk of bias and reduce the effect of bias in *** Interim Measures also fail to take causes of bias into account,and several principles must be further ***,regulations on generative AI at the global level are still in their early *** forming a governance framework,this paper could provide the community with useful experiences and play a leading *** framework includes at least three parts:first,determining the realm of governance and unifying related concepts;second,developing measures for different layers to identify the causes and specific aspects of bias;third,identifying parties with the skills to take responsibility for detecting bias intrusions and proposing a program for the allocation of liabilities among the large-scale platform developers.

关键词： generative AI bias AI governance

Accurate identification of glass crystallization helps in selecting high electronic conductivity materials

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Progress in Natural Science:Materials International 2024年第3期34卷 503-511页

作者： Fanhou Kong Shuli Li Suoqi Zhao huiwen Li Lin Li Zhenting Zang Rui Zhang Hongrui Liu Lehan Wang Changjiu Li Keng H.Chung Dongying Key Laboratory of New Energy Materials and Devices & School of Chemical Engineering Shandong Institute of Petroleum and Chemical Technology Special Glass Key Lab of Hainan Province & State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University

Though the current research on vanadium-based glass electrodes has made great progress, the conductivity theory of V-based glasses has not been obviously improved and crystals cannot be positioned precisely. The changes in the valence state of V3+, V4+and V5+are regulated by the strong reducing agent Fe2P to realize valence bond transformation of the amorphous electrode, explore the redox process of multi-electron reactions and further optimize the conductivity of electrode materials. VPFe2 and VPFe3 precipitate VO2crystals and VPFe4 precipitates VO2and V6O1.crystals. Electron back-scattered diffraction was used to accurately identify the distribution and specific positions of both types of crystals. V6O1.crystals exhibit a strong texture according to pole figure and inverse pole figure. XPS reveals that Fe2P and V2O5, undergo a redox reaction during the hightemperature melting process, where V5+is reduced to V4+and V3+and V4+renders a positive influence on conductivity. The addition of Fe2P increases the content of V4+in the glass and VPFe3 glass contains the highest content of V4+, leading to the highest electronic conductivity. V2O5transforms into VO2crystals and VO2transforms into V6O1.with the increase of Fe2P content. The type of nanocrystal precipitation in glass affects electronic conductivity.

关键词： V2O5 Glass crystallization Electronic conductivity Electron back-scattered diffraction Multi-electron reactions