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Unraveling the atomic interdiffusion mechanism of NiFe_(2.)O_(4)oxygen carriers during chemical looping CO_(2.conversion

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Carbon Energy 2024年第8期6卷 105-121页

作者： Da Song Yan Lin Shiwen Fang Yang Li Kun zhao Xinfei Chen Zhen Huang Fang He Zengli zhao Hongyu Huang Fanxing Li guangzhou institute of Energy Conversion Chinese Academy of SciencesGuangzhouChina School of Energy Science and Engineering University of Science and Technology of ChinaHefeiChina College of Mechanical and Electrical Engineering Zhongkai University of Agriculture and EngineeringGuangzhouChina College of Chemistry and Bioengineering Guilin University of TechnologyGuilinChina North Carolina State University RaleighNorth CarolinaUSA

By employing metal oxides as oxygen carriers,chemical looping demonstrates its effectiveness in transferring oxygen between reduction and oxidation environments to partially oxidize fuels into syngas and convert CO_(2.into ***,NiFe_(2.)O_(4)oxygen carriers have demonstrated remarkable efficiency in chemical looping CO_(2.***,the intricate process of atomic migration and evolution within the internal structure of bimetallic oxygen carriers during continuous high‐temperature redox cycling remains ***,the lack of a fundamental understanding of the complex ionic migration and oxygen transfer associated with energy conversion processes hampers the design of high‐performance oxygen ***,in this study,we employed in situ characterization techniques and theoretical calculations to investigate the ion migration behavior and structural evolution in the bulk of NiFe_(2.)O_(4)oxygen carriers during H2.reduction and CO_(2./lab air oxidation *** discovered that during the H2.reduction step,lattice oxygen rapidly migrates to vacancy layers to replenish consumed active oxygen species,while Ni leaches from the material and migrates to the *** the CO_(2.splitting step,Ni migrates toward the core of the bimetallic oxygen carrier,forming Fe–Ni *** the air oxidation step,Fe–Ni migrates outward,creating a hollow structure owing to the Kirkendall effect triggered by the swift transfer of lattice *** metal atom migration paths depend on the oxygen transfer *** discoveries highlight the significance of regulating the release–recovery rate of lattice oxygen to uphold the structures and reactivity of oxygen *** work offers a comprehensive understanding of the oxidation/reduction‐driven atomic interdiffusion behavior of bimetallic oxygen carriers.

关键词： chemical looping CO_(2.splitting density functional theory in situ characterization ionic migration

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青岛─石岛近海反气旋中尺度涡旋存在证据及数值模拟

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海洋学报 1999年第2期21卷 18-26页

作者：徐丹亚赵保仁中国科学院南海海洋研究所广州510301 中国科学院海洋研究所青岛266071

系统整理的历史实测海流和温盐资料显示出青岛─石岛近海水域全年都存在着中尺度反气旋式涡旋运动．利用二维数值模式，首次模拟出该涡旋的存在，并对这一涡旋的形成机制进行了探讨，数值模拟结果和实测吻合良好．数值计算表明：在冬季... 详细信息

系统整理的历史实测海流和温盐资料显示出青岛─石岛近海水域全年都存在着中尺度反气旋式涡旋运动．利用二维数值模式，首次模拟出该涡旋的存在，并对这一涡旋的形成机制进行了探讨，数值模拟结果和实测吻合良好．数值计算表明：在冬季盛行风的作用下，山东半岛南岸出现减水，迫使北上的黄海暖流中的一部分向西北方向延伸，在到达山东半岛近海后向右转向，形成东北向沿岸流，这样，与绕过山东半岛大约沿40～50m等深线南下的黄海沿岸流作用，在青岛─石岛近海形成一个中尺度反气旋涡旋．夏季由于偏南风的作用，致使山东半岛南部近海浅水区域海水都向东北方向流动，与沿黄海冷水团锋面南下的黄海沿岸流相作用，由于流速切变也形成了上述涡旋．

关键词：中尺度涡旋数值模拟黄海暖流反气旋

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Recent progress on LAMP assay in diagnosis of shrimp viral pathogens

Recent progress on LAMP assay in diagnosis of shrimp viral p...

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第六届世界华人虾蟹类养殖研讨会

作者： Zhe zhao Chao-Qun Hu Chun-Hua Ren (South china Sea {2. of Oceanology,chinese academy of sciences,guangzhou 510301,china)

Viral diseases are a major problem for large scale expanding of shrimp aquaculture industry worldwide since they often cause mass production losses and serious economic damage to shrimp ***,no effective drugs were still available for specific preventing and treating shrimp viral diseases,and then viral diseases on shrimp were recognized as an unsolvable problem around the *** methods for identification of shrimp viral infections have been relied on histopathologically and conventional PCR based methods which have several practical limitations for widely ***-mediated isothermal amplification(LAMP)is a novel nucleic acid amplification *** LAMP is performed under isothermal conditions,as a result,it does not require complicated thermal cycling steps;a water bath or block heater is sufficient for the DNA amplification. When compared with conventional PCR,the reaction time is usually shorter to amplify the target DNA to detectable *** useful feature of LAMP is the turbidity-based detection,which can be easily judged by the naked *** terms of specificity and sensitivity,LAMP is superior to PCR and comparable to RT-PCR,nested PCR and real-time ***,LAMP assay has been widely employed for the rapid diagnosis of infectious diseases.

关键词： shrimp LAMP viral pathogens

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On the use of deep learning for phase recovery

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Light(Science & Applications) 2024年第2期13卷 190-235页

作者： Kaiqiang Wang Li Song Chutian Wang Zhenbo Ren Guangyuan zhao Jiazhen Dou Jianglei Di George Barbastathis Renjie Zhou Jianlin zhao Edmund Y.Lam Department of Electrical and Electronic Engineering The University of Hong KongHong Kong SARChina School of Physical Science and Technology Northwestern Polytechnical UniversityXi’anChina Department of Biomedical Engineering The Chinese University of Hong KongHong Kong SARChina School of Information Engineering Guangdong University of TechnologyGuangzhouChina Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMAUSA

Phase recovery(PR)refers to calculating the phase of the light field from its intensity *** exemplified from quantitative phase imaging and coherent diffraction imaging to adaptive optics,PR is essential for reconstructing the refractive index distribution or topography of an object and correcting the aberration of an imaging *** recent years,deep learning(DL),often implemented through deep neural networks,has provided unprecedented support for computational imaging,leading to more efficient solutions for various PR *** this review,we first briefly introduce conventional methods for ***,we review how DL provides support for PR from the following three stages,namely,pre-processing,in-processing,and *** also review how DL is used in phase image ***,we summarize the work in DL for PR and provide an outlook on how to better use DL to improve the reliability and efficiency of ***,we present a live-updating resource(https://***/kqwang/phase-recovery)for readers to learn more about PR.

关键词： networks phase optics

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Carbon isotopic composition,turnover and origins of soil CO2.in a monsoon evergreen broadleaf forest in the Dinghushan Biosphere Reservoir,South china

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Science Bulletin 2010年第23期55卷 2551-2559页

作者： DING Ping1,SHEN ChengDe1,2.WANG Ning1,YI WeiXi1,DING XingFang2.FU DongPo2.LIU KeXin2.& zhao Ping3 1Key Laboratory of Isotope Geochronology and Geochemistry,guangzhou {2. of Geochemistry,chinese academy of sciences,guangzhou 51064.,china 2.tate Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,china 3South china Botanical Garden,chinese academy of sciences,guangzhou 510650,china

Carbon isotopic compositions of soil CO2.in rainy season (July) from two natural soil profiles (DHLS & DHS) in the monsoon evergreen broadleaf forest in the Dinghushan Biosphere Reservoir (DBR),South china,are *** and origins of soil CO2.are preliminarily discussed in this *** show that the content of soil CO2.varies between 612. and 18718 ppmv,and increases with increasing depth until 75 cm,and then it *** DHLS,soil CO2.δ 13C ranges from -2..71‰ to -2..03‰,showing a significant inverse correlation (R2.0.91) with the soil CO2.content in the same *** to a model related to soil CO2.δ 13C,the soil CO2.is mainly derived from the root respiration (>80%) in *** in DHS,where soil CO2.δ 13C ranges from -2..19‰ to -2..82.,soil CO2.is primarily originated from the decomposition of organic matter (51%–94%),excluding the surface layer (2. cm,90%).Radiocarbon data suggest that the carbon in soil CO2.is modern carbon in both DHLS and *** in 14C ages between the "oldest" and "youngest" soil CO2.in DHLS and DHS are 8 months and 14 months,respectively,indicating that soil CO2.in DHLS has a faster turnover rate than that in *** Δ14C values of soil CO2.which range between 100.0‰ and 107.2. and between 102.5‰ and 112.1‰ in DHLS and DHS,respectively,are obviously higher than those of current atmospheric CO2.and SOC in the same layer,suggesting that soil CO2.is likely an important reservoir for Bomb-14C in the atmosphere.

关键词： Dinghushan Biosphere Reservoir soil CO2 turnover Bomb-14CO2 13C & 14C

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Highly uniform Co-Cu bimetallic sulfides for rechargeable alkaline aqueous zinc batteries

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chinese Chemical Letters 2024年第2期35卷 521-526页

作者： Xiaofang Bai Yuwei zhao Mangwei Cui Tianshuo Guo Zijie Tang Chuan Li Heng Gao Shuo Yang Lingzhi zhao Chunyi Zhi Hongfei Li Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Songshan Lake Materials Laboratory Dongguan 523808China Department of Materials Science and Engineering City University of Hong KongHong KongChina International Centre for Quantum and Molecular Structures Department of PhysicsShanghai UniversityShanghai 200444China Guangdong Provincial Engineering Technology Research Center for Low Carbon and Advanced Energy Materials Institute of Semiconductor Science and TechnologySouth China Normal UniversityGuangzhou 510631China

Rechargeable alkaline aqueous zinc batteries(RAZBs)have attracted increasing ***,most RAZBs are hindered by the limited availability of cathode *** practical electrochemical performance of most cathode materials is lower than the theoretical value due to their poor electrical conductivity and low utilization *** this work,we develop a facile hydrothermal procedure to prepare highly uniform bimetallic sulfides as novel cathode materials for ***-cobalt binary metallic oxides materials possess higher conductivity and larger capacity compared with their mono-metal oxides compounds due to bimetallic synergistic effects and multiple oxidation ***,bimetallic sulfide compounds have smaller bond energy and longer bond length than their oxides,leading to less structural damage,faster kinetics of electrochemical reactions,and better *** as-prepared Co-Cu bimetallic sulfides show enhanced electrochemical performance due to various valences of Co and Cu as well as the existence of *** a result,aqueous Zn/CuCo_(2.S_(4) battery shows a high specific capacity of 117.4 mAh/g at 4 A/g and a good cycle life of over 8000 *** on PANa hydrogel electrolytes,a flexible Zn/CuCo_(2.S_(4) battery demonstrates excellent cycling *** battery can also meet the requirements of electronic devices with different shapes and performs well in extreme environments,such as freezing,drilling,and *** work opens new avenues to obtain high-rate and long-life cathode materials for RAZBs by utilizing the synergistic effects of bimetallic sulfides and provides a new platform for flexible energy storage devices.

关键词： Aqueous zinc batteries Bimetallic sulfides Cathode materials Rate performance Cycling stability

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A modified back analysis method for deep excavation with multi-objective optimization procedure

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1373-1387页

作者： Chenyang zhao Le Chen Pengpeng Ni Wenjun Xia Bin Wang State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China Guangdong Research Center for Underground Space Exploitation Technology School of Civil EngineeringSun Yat-sen UniversityGuangzhou510275China Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai519000China Jiangsu Provincial Transportation Engineering Construction Bureau Nanjing210004China

Real-time prediction of excavation-induced displacement of retaining pile during the deep excavation process is crucial for construction *** paper proposes a modified back analysis method with multi-objective optimization procedure,which enables a real-time prediction of horizontal displacement of retaining pile during *** opposed to the traditional stage-by-stage back analysis,time series monitoring data till the current excavation stage are utilized to form a multi-objective ***,the multi-objective particle swarm optimization (MOPSO) algorithm is applied for parameter *** optimized model parameters are immediately adopted to predict the excavation-induced pile deformation in the continuous construction *** achieve efficient parameter optimization and real-time prediction of system behavior,the back propagation neural network (BPNN) is established to substitute the finite element model,which is further implemented together with MOPSO for automatic *** proposed approach is applied in the Taihu tunnel excavation project,where the effectiveness of the method is demonstrated via the comparisons with the site monitoring *** method is reliable with a prediction accuracy of more than 90%.Moreover,different optimization algorithms,including non-dominated sorting genetic algorithm (NSGA-II),Pareto Envelope-based Selection Algorithm II (PESA-II) and MOPSO,are compared,and their influences on the prediction accuracy at different excavation stages are *** results show that MOPSO has the best performance for high dimensional optimization task.

关键词： Multi-objective optimization Back analysis Surrogate model Multi-objective particle swarm optimization(MOPSO) Deep excavation

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Defect-manipulated magnetoresistance and above-room-temperature ferromagnetism in two-dimensional BaNi_(2.V_(2.O_(8)

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chinese Chemical Letters 2024年第3期35卷 523-527页

作者： Pengfei Tan Chuanhui Zhu Jinjin Yang Shuang zhao Tao Xia Mei-Huan zhao Tao Han Zheng Deng Man-Rong Li Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of ChemistrySun Yat-sen UniversityGuangzhou 510006China School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China institute of Physics Chinese Academy of SciencesBeijing 100190China School of Science Hainan UniversityHaikou 570228China

The intricate correlation between multiple degrees of freedom and physical properties is a fascinating area in solid state chemistry and condensed matter ***,we report a quantum-magnetic system BaNi_(2.V_(2.O_(8)(BNVO),in which the spin correlation was modulated by unusual oxidation state,leading to different magnetic *** BNVO was modified with topochemical reduction(TR)to yield TR-BNVO with partially reduced valance state of Ni^(+)in the two-dimensional NiO_(6)-honeycomb ***,the antiferromagnetic order is suppressed by the introduction of locally interposed Ni^(+)and oxygen vacancies,resulting in a ferromagnetic ground state with the transition temperature up to 710 K.A positive magnetoresistance(7.5%)was observed in the TR-BNVO at 40 K under 7 *** findings show that topological reduction is a powerful approach to engineer low-dimensional materials and accelerate the discovery of new quantum magnetism.

关键词： Layered honeycomb oxide Topochemical reduction Oxygen vacancies Ferromagnetism Magnetoresistance

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土地利用/覆被变化对土壤温室气体排放通量影响

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山地学报 2009年第5期27卷 600-604页

作者：刘惠赵平广东商学院资源与环境学院中国科学院华南植物研究所

土地利用/覆被变化影响温室气体的净排放,改变了全球温室气体的收支平衡。森林、草地和农田之间的转化、湿地和旱地的转化及土地管理措施的不同,影响着土壤碳的释放和其他痕量气体的排放,从而改变全球变暖增温的综合潜力(GWP),因此要综... 详细信息

土地利用/覆被变化影响温室气体的净排放,改变了全球温室气体的收支平衡。森林、草地和农田之间的转化、湿地和旱地的转化及土地管理措施的不同,影响着土壤碳的释放和其他痕量气体的排放,从而改变全球变暖增温的综合潜力(GWP),因此要综合考虑土地利用/覆被变化对土壤CO2.CH4和N2.排放通量的影响。加强对温室气体发生机理的研究,选取合理的土地利用和土地管理方式,减少全球大气温室气体浓度增加,是未来研究的重点和难点。

关键词：土地利用/覆被变化 CO2 CH4 N2.

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Transitions among Mariana-,Japan-,Cordillera-and Alaska-type are systems and their final juxtapositions leading to accretionary and collisional orogenesis

Transitions among Mariana-,Japan-,Cordillera-and Alaska-type...

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中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： WENJIAO XIAO~(1*),CHUNMING HAN~1,CHAO YUAN~2.MIN SUN~3, GUOCHUN zhao~3 & YEHUA SHAN~2.1 State Key Laboratory of Lithospheric Evolution,institute of Geology and Geophysics, {2. academy of sciences,Beijing 10002.,china 2.guangzhou institute of Geochemistry,{2. academy of sciences,guangzhou {12.,china 3 Department of Earth sciences,The University of Hong Kong,Hong Kong,china

’Arc system’ is used here as a collective term for a variety of arcs that occur along continental margins or in oceanic plates;it includes associated units from adjacent *** major arc systems(Mariana-,Japan-,Cordillera-and Alaska-type)can be distinguished along the Circum-Pacific *** Japan-type arc systems in ancient orogens(*** Altaids) may have been largely regarded as microcontinents because they have so-called Precambrian basement. Often the Cordillera-type arc systems can be very complicated,and if they are rifted away from the host continent they become more difficult to *** these arc systems interact mutually and with continental marginal sequences,leading to complicated accretionary and colhsional *** alternation between Western Pacific archipelagos and the Eastern Pacific active margin is the stereotype of accretionary and colhsional *** importantly, these four main types of arc systems can be juxtaposed into a final orogenic collage, which is another main expression of accretionary *** some parts of accretionary and colhsional orogens can be terminated by attachment of a continent-size craton such as Tarim or even India,and even so the accretionary and colhsional processes may continue elsewhere along *** significance of the interactions among these arc systems and their final juxtaposition has not been fully appreciated in ancient *** Altaids together with the Circum-Pacific orogens offers a good opportunity to study such accretionary-collisional orogenesis.

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