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Frontiers of Environmental Science & Engineering 2022年第3期16卷 63-72页

作者： Ziyan Qin Qun gao Qiang Dong Joy D.Van Nostrand Qi Qi Yifan Su Suo liu Tianjiao Dai Jingmin Cheng Jizhong Zhou Yunfeng Yang State Key Joint laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Institute of Chemical Defense Beijing 102205China Institute for Environmental Genomics and Department of Microbiology and Plant BiologyUniversity of OklahomaNormanOK 73019USA School of Civil Engineering and Environmental Sciences University of OklahomaNormanOK 73019USA Earth and Environmental Sciences Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA

Antibiotic resistance genes comprising antibiotic resistome are of great concern due to their increase in the *** evidence of shared resistomes between soils and animal husbandry has imposed potential risks to human ***,the correlation between a given community’s resistome and bacterial taxonomic composition is ***,a transmission chain of resistomes from swine manure to compost and compost-amended soil were analyzed in five suburban areas of Beijing,China,with unamended agricultural soils as control *** resistomes and bacterial taxonomic compositions were distinct between(I)manure and compost;and(II)compost-amended and control *** manure,compost,and compost-amended soils,theβ-diversity of the resistome and bacterial taxonomic composition was significantly correlated,while no correlation was detected in control *** taxonomic composition explained 36.0%of total variations of the resistome composition,much higher than environmental ***,those results demonstrated that antibiotic resistome was closely related to bacterial taxonomic composition along the suburban transmission chain.

关键词： Antibiotic resistance genes Resistome Bacterial taxonomy Transmission chain

Unraveling Shuttle Effect and Suppression Strategy in Lithium/Sulfur Cells by In Situ/Operando X-ray Absorption Spectroscopic Characterization

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Energy & Environmental Materials 2021年第2期4卷 222-228页

作者： Lujie Jia Jian Wang Shuaiyang Ren Guoxi Ren Xiang Jin Licheng Kao Xuefei Feng Feipeng Yang Qi Wang Ludi Pan Qingtian Li Yi-sheng liu Yang Wu gao liu Jun Feng Shoushan Fan Yifan Ye Jinghua Guo Yuegang Zhang State Key laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China Advanced Light Source and Energy Storage and Distributed Resources DivisionLawrence Berkeley National LaboratoryBerkeley CA 94720USA i-Lab Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China caS Center for Excellence in Superconducting Electronics State Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China 不详

The polysulfides shuttle effect represents a great challenge in achieving high capacity and long lifespan of lithium/sulfur(Li/S)cells.A comprehensive understanding of the shuttle-related sulfur speciation and diffusion process is vital for addressing this ***,we employed in situ/operando X-ray absorption spectroscopy(XAS)to trace the migration of polysulfides across the Li/S cells by precisely monitoring the sulfur chemical speciation at the cathodic electrolyte-separator and electrolyte-anode interfaces,respectively,in a real-time *** we adopted a shuttle-suppressing strategy by introducing an electrocatalytic layer of twinborn bismuth sulfide/bismuth oxide nanoclusters in a carbon matrix(BSOC),we found the Li/S cell showed greatly improved sulfur utilization and longer life *** operando S Kedge XAS results revealed that the BSOC modification was bi-functional:trapping polysulfides and catalyzing conversion of sulfur species *** elucidated that the polysulfide trapping-and-catalyzing effect of the BSOC electrocatalytic layer resulted in an effective lithium anode *** results could offer potential stratagem for designing more advanced Li/S cells.

关键词： in situ/operando lithium/sulfur cell shuttle effect sulfur speciation X-ray absorption spectroscopy

Two-dimensional ferromagnetic superlattices

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national Science Review 2020年第4期7卷 745-754页

作者： Shanshan liu Ke Yang Wenqing liu Enze Zhang Zihan Li Xiaoqian Zhang Zhiming Liao Wen Zhang Jiabao Sun Yunkun Yang Han gao Ce Huang Linfeng Ai Ping Kwan Johnny Wong ANDrew Thye Shen Wee Alpha T.N'Diaye Simon A.Morton Xufeng Kou Jin Zou Yongbing Xu Hua Wu Faxian Xiu State Key laboratory of Surface Physics and Department of Physics Fudan University Institute for Nanoelectronic Devices and Quantum Computing Fudan University laboratory for Computational Physical Sciences (MOE) Fudan University Department of Electronic Engineering Royal Holloway University of London School of Electronic Science and Engineering Nanjing University Materials Engineering The University of Queensland Department of Physics National University of Singapore Centre for Advanced 2D Materials and Graphene Research Centre National University of Singapore lawrence berkeley national laboratory School of Information Science and Technology Shanghai Tech University Centre for Microscopy and Microanalysis The University of Queensland Collaborative Innovation Center of Advanced Microstructures

Mechanically exfoliated two-dimensional ferromagnetic materials(2 D FMs) possess long-range ferromagnetic order and topologically nontrivial skyrmions in few layers. However, because of the dimensionality effect, such few-layer systems usually exhibit much lower Curie temperature(TC) compared to their bulk counterparts. It is therefore of great interest to explore effective approaches to enhance their TC, particularly in wafer-scale for practical applications. Here, we report an interfacial proximity-induced high-TC2 D FM FeGe Te(FGT) via A-type antiferromagnetic material Cr Sb(CS) which strongly couples to FGT. A superlattice structure of(FGT/CS)n, where n stands for the period of FGT/CS heterostructure, has been successfully produced with sharp interfaces by molecular-beam epitaxy on 2-inch wafers. By performing elemental specific X-ray magnetic circular dichroism(XMCD) measurements, we have unequivocally discovered that TCof 4-layer FeGeTecan be significantly enhanced from 140 K to230 K because of the interfacial ferromagnetic coupling. Meanwhile, an inverse proximity effect occurs in the FGT/CS interface, driving the interfacial antiferromagnetic Cr Sb into a ferrimagnetic state as evidenced by double-switching behavior in hysteresis loops and the XMCD spectra. Density functional theory calculations show that the Fe-Te/Cr-Sb interface is strongly FM coupled and doping of the spin-polarized electrons by the interfacial Cr layer gives rise to the TCenhancement of the FeGeTefilms, in accordance with our XMCD measurements. Strikingly, by introducing rich Fe in a 4-layer FGT/CS superlattice, TCcan be further enhanced to near room temperature. Our results provide a feasible approach for enhancing the magnetic order of few-layer 2 D FMs in wafer-scale and render opportunities for realizing realistic ultra-thin spintronic devices.

关键词： 2D ferromagnetic material room temperature 2-inch Fe3GeTe2 film wafers proximity effect (Fe3GeTe2/CrSb)nsuperlattice

Optimization of MCMB-based laminates for lithium ion batteries for PHEVs

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Optimization of MCMB-based laminates for lithium ion batteri...

A thermodynamic hypothesis regarding optimality principles for flow processes in geosystems

第29届全国化学与物理电源学术年会

作者： Honghe Zheng gao liu Xiangyun Song Vince Battaglia School of Energy Soochow University lawrence berkeley national laboratory

Introduction To develop electrodes to meet the aggressive PHEV goals,one important way is to optimize the inactive material ***(vinylidene difluoride)(PVDF)binder and acetylene black are w

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Chinese Science Bulletin 2014年第16期59卷 1880-1884页

作者： Hui-Hai liu Earth Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA

This paper proposes a new thermodynamic hypothesis that states that a nonlinear natural system that is not isolated and involves positive feedbacks tends to minimize its resistance to the flow process through it that is imposed by its *** demonstrate that the hypothesis is consistent with flow behavior in saturated and unsaturated porous media,river basins,and the Earthatmosphere *** optimization for flow processes has been previously discussed by a number of researchers in the literature,the unique contribution of this work is to indicate that only the driving process is subject to optimality when multiple flow processes are simultaneously involved in a system.

关键词：地球系统流动过程热力学假说饱和多孔介质自然系统江河流域流动行为

Mapping wetland changes in China between 1978 and 2008

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Chinese Science Bulletin 2012年第22期57卷 2813-2823页

作者： NIU ZhenGuo ZHANG HaiYing WANG XianWei YAO WenBo ZHOU DeMin ZHAO KuiYi ZHAO Hui LI NaNa HUANG HuaBing LI CongCong YANG Jun liu caiXia liu Shuang WANG Lin LI Zhan YANG ZhenZhong QIAO Fei ZHENG YaoMin CHEN YanLei SHENG YongWei gao XiaoHong ZHU WeiHong WANG WenQing WANG Hong WENG YongLing ZHUANG DaFang liu JiYuan LUO Zhicai CHENG Xiao GUO ZiQi GONG Peng State Key laboratory of Remote Sensing Science Jointly Sponsored by Institute of Remote Sensing ApplicationsChinese Academy of Sciences and Beijing Normal UniversityBeijing 100101China Ministry of Education Key laboratory for Earth System Modeling Center for Earth System ScienceInstitute for Global Change StudiesTsinghua UniversityBeijing 100084China Department of Resource Environment and Tourism Capital Normal UniversityBeijing 100037China Northeast Institute of Geography and Agricultural Ecology Chinese Academy of SciencesChangchun 130012China Department of Geography and Remote Sensing Beijing Normal UniversityBeijing 100875China College of Forestry Beijing Forestry UniversityBeijing 100083China Department of Environmental Science Policy and ManagementUniversity of CaliforniaBerkeley94720USA Department of Geography University of CaliforniaLos Angeles90095USA Department of Life and Geographic Sciences Qinghai Normal UniversityXining 810008China Department of Geography Yanbian UniversityYanbian 133002China School of Environment and Ecology Xiamen UniversityXiamen 361005China School of Geographical Information Science Hohai UniversityNanjing 211100China School of Surveying and Mapping Transportation Engineering Southeast UniversityNanjing 210096China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China School of Surveying and Mapping Wuhan UniversityWuhan 430079China

Four wetland maps for all China have been produced,based on Landsat and CBERS-02B remote sensing data between 1978 and 2008 (1978,1990,2000 and 2008).These maps were mainly developed by manual interpretation and validated by substantial field investigation in *** on these maps,we analyzed the 2008 wetland distribution in China and discussed wetland changes and their drivers over the past 30 years.(i) There were about 324097 km 2 of wetlands in 2008,for which inland marshes or swamps were the most common wetland type (35%),with lakes (26%) *** of the wetlands were in Heilongjiang,Inner Mongolia,Qinghai and Tibet,occupying about 55% of the national wetland area.(ii) From 1978 to 2008,China's wetland area continually and significantly decreased,by about 33% based on changes in the wetland *** was in sharp contrast to the increase in artificial wetlands,which increased by about 122%.Inland marshes accounted for the main loss of total wetlands from 1978 to *** 2000 through 2008,riverine and lacustrine wetlands constituted the main wetland *** however,the rate of wetland loss decreased from 5523 to 831 km 2 /a.(iii) The change ratio of lost natural wetlands (including inland and coastal wetlands) to non-wetlands has decreased slightly over the past 30 *** 1978 to 1990,nearly all natural wetlands (98%) lost were transformed into ***,the ratio declined to 86% from 1990 to 2000,and to 77% from 2000 to 2008.(iv) All Chinese provinces were divided into three groups according to patterns of wetland changes,which could relate to the driving forces of such *** was completely different from other provinces,as it was one representative example in which there was a net wetland increase,because of global warming and decreased human activity since *** economic development caused considerable wetland loss in most eastern provinces,and artificial wetlands increased.

关键词：湿地变化中国地图映射地球资源卫星内陆湿地人工湿地全球气候变暖湿地面积

Dimensionality-driven metal to Mott insulator transition in two-dimensional 1T-TaSe2

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national Science Review 2024年第3期11卷 108-118页

作者： Ning Tian Zhe Huang Bo Gyu Jang Shuaifei Guo Ya-Jun Yan Jingjing gao Yijun Yu Jinwoong Hwang Cenyao Tang Meixiao Wang Xuan Luo Yu Ping Sun Zhongkai liu Dong-Lai Feng Xianhui Chen Sung-Kwan Mo Minjae Kim Young-Woo Son Dawei Shen Wei Ruan Yuanbo Zhang State Key laboratory of Surface Physics New Cornerstone Science Laboratory and Department of PhysicsFudan University Shanghai Qi Zhi Institute Shanghai Research Center for Quantum Sciences Institute for Nanoelectronic Devices and Quantum Computing Fudan University Zhangjiang Fudan International Innovation Center Fudan University State Key laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of Sciences School of Physical Science and Technology ShanghaiTech University Korea Institute for Advanced Study School of Emerging Technology and Department of Physics University of Science and Technology of China Advanced Light Source Lawrence Berkeley National Laboratory ShanghaiTech laboratory for Topological Physics Key laboratory of Materials Physics Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of Sciences High Magnetic Field laboratory Hefei Institutes of Physical Science Chinese Academy of Sciences Collaborative Innovation Centre of Advanced Microstructures Nanjing University Department of Physics University of Science and Technology of China and Key Laboratory of Strongly Coupled Quantum Matter Physics Chinese Academy of Sciences national Synchrotron Radiation laboratory University of Science and Technology of China

Two-dimensional materials represent a major frontier for research into exotic many-body quantum phenomena. In the extreme two-dimensional limit, electron-electron interaction often dominates over other electronic energy scales, leading to strongly correlated effects such as quantum spin liquid and unconventional *** dominance is conventionally attributed to the lack of electron screening in the third dimension. Here, we discover an intriguing metal to Mott insulator transition in 1T-TaSe2that defies conventional wisdom. Specifically, we find that dimensionality crossover, instead of reduced screening, drives the transition in atomically thin 1T-TaSe2. A dispersive band crossing the Fermi level is found to be responsible for the bulk metallicity in the material. Reducing the dimensionality,however, effectively quenches the kinetic energy of these initially itinerant electrons, and drives the material into a Mott insulating *** dimensionality-driven metal to Mott insulator transition resolves the long-standing dichotomy between metallic bulk and insulating surface of 1T-TaSe2. Our work further reveals a new pathway for modulating two-dimensional materials that enables exploring strongly correlated systems across uncharted parameter space.

关键词： two-dimensional materials 1T-TaSe2 dimensionality crossover metal to Mott insulator transition

GRB 210610B:The Internal and External Plateau as Evidence for the Delayed Outflow of Magnetar

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Research in Astronomy and Astrophysics 2024年第7期24卷 170-180页

作者： Yi-Ning Wei Xiang-gao Wang Da-Bin Lin Wei-Kang Zheng Liang-Jun Chen Sheng-Yu Yan Shuang-Xi Yi Qi Wang Zi-Min Zhou Hui-Ya liu En-Wei Liang Guangxi Key laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China GXU-NAOC Center for Astrophysics and Space Sciences Nanning 530004China Department of Astronomy University of CaliforniaBerkeleyCA 94720-3411USA Department of Physics and Tsinghua Center for Astrophysics(THca) Tsinghua UniversityBeijing 100084China School of Physics and Physical Engineering Qufu Normal UniversityQufu 273165China

After launching a jet,outflows of magnetar were used to account for the achromatic plateau of afterglow and the early X-ray flux plateau known as“internal plateau”.The lack of detecting magnetic dipole emission together with the energy injection feature in a single observation poses confusion until the long gamma-ray burst(GRB)210610B is *** 210610B is presented with an optical bump following an early X-ray plateau during the afterglow *** plateau followed by a steep decline flux overlays in the steadily decaying X-ray flux with indexα_(X,1)~2.06,indicating an internal origin and that can be fitted by the spin-down luminosity law with the initial plateau luminosity log_(10)L_(X)~48.29 erg s~(-1)and the characteristic spin-down timescale T~2818 s.A subsequent bump begins at~4000 s in the R band with a rising indexα_(R,1)~-0.30 and peaks at~14125 s,after which a decay indexα_(R,2)~0.87 and finally transiting to a steep decay withα_(R,3)~1.77 achieve the closure relation of the external shock for the normal decay phase as well as the magnetar spin-down energy injection phase,provided that the average value of the photon indexΓ_γ=1.80 derived from the spectral energy distributions(SEDs)between the X-ray and optical *** closure relation also works for the late X-ray *** to the traditional picture of GRB,the outflow powers the early X-ray plateau by dissipating energy internally and collides with the leading decelerating blast burst as time goes on,which could interpret the exotic feature of GRB *** carry out a Markov Chain Monte carlo simulation and obtain a set of best parameters:■.The artificial light curve can fit the afterglow data *** that,we estimated the average Lorentz factor and the X-ray radiation efficiency of the later ejecta are 35%and 0.13%,respectively.

关键词： (stars)gamma-ray burst individual(GRB 210610B)-(stars)gamma-ray burst general-stars jets

The Transference Number

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Energy & Environmental Materials 2022年第2期5卷 366-369页

作者： Kevin W.gao Chao Fang David M.Halat Aashutosh Mistry John Newman Nitash P.Balsara Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Chemical and Biomolecular Engineering University of CaliforniaBerkeleyCA 94720USA Joint Center for Energy Storage Research Argonne National LaboratoryLemontIL 60439USA Chemical Sciences and Engineering Division Argonne National LaboratoryLemontIL 60439USA

The performance of rechargeable batteries and other electrochemical systems depends on the rate at which the working ion(often a cation)is transported from one electrode to the *** cation transference number is an important transport parameter that affects this *** purpose of this perspective is to distinguish between approximate and rigorous methods used in the literature to measure the transference *** emphasize the fact that this parameter is dependent on the reference frame used in the analysis;care must be taken when comparing values obtained from different sources to account for differences in reference *** present data obtained from a well-characterized *** compare rigorously determined transference numbers in two reference frames with values obtained by an approximate *** conclude with a qualitative discussion of the relationship between the transference number and salt concentration gradients that are obtained when current is drawn through a battery。

关键词： battery electrolytes concentrated solution theory ion transport reference frames transference number