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The characteristics of sea fog with different airflow over the Huanghai Sea in boreal spring

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Acta oceanologica Sinica 2010年第4期29卷 3-12页

作者： HUANG Jian wang Xin zhou Wen HUANG Huijun wang dongxiao zhou Faxiu Institute of Tropical and Marine Meteorology China Meteorological Administration Guangzhou 510080 China Guy Carpenter Asia-Pacific Climate Impact Centre School of Energy and Environment City University of Hong Kong Hong Kong China CAS key laboratory of tropical marine environmental dynamics South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Department of meteorology Ocean University of China Qingdao 262003 China

Using the observations from ICOADS datasets and contemporaneous NCEP/NCAR reanalysis datasets during 1960-2002,the study classifies the airflows in favor of sea fog over the Huanghai （Yellow） Sea in boreal spring （April-May） with the method of trajectory analysis,and analyzes the changes of proportions of warm and cold sea fogs along different paths of *** to the heat balance equation,we investigate the relationships between the marine meteorological conditions and the proportion of warm and cold sea fog along different airflow *** major results are summarized as follows.（1） Sea fogs over the Huanghai Sea in spring are not only warm fog but also cold *** proportion of warm fog only accounts for 44% in April,while increases as high as 57% in May.（2） Four primary airflow paths leading to spring sea fog are *** are originated from the northwest,east,southeast and southwest of the Huanghai Sea,*** occurrence ratios of the warm sea fog along the east and southeast airflow paths are high of 55% and 70%,while these along the southwest and northwest airflow paths are merely 17.9% and 50%.（3） The key physical processes governing the warm/cold sea fog are heat advection transport,longwave radiation cooling at fog top,solar shortwave warming and latent heat flux between airsea interfaces.（4） The characteristics of sea fog along the four airflow paths relate closely to the conditions of water vapor advection,and the vertical distribution of relative humidity.

关键词： spring sea fog over the Huanghai Sea airflow paths water vapor flux heat advection vertical distribution of water vapor

Diagnosis of indirectly driven double shell targets with point-projection hard x-ray radiography

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Matter and Radiation at Extremes 2024年第2期9卷 50-62页

作者： Chao tian Minghai Yu Lianqiang Shan Fengjuan Wu Bi Bi Qiangqiang Zhang Yuchi Wu tiankui Zhang Feng Zhang dongxiao Liu Weiwu wang Zongqiang Yuan Siqian Yang lei Yang Zhigang Deng Jian Teng Weimin zhou Zongqing Zhao Yuqiu Gu Baohan Zhang Science and Technology on Plasma Physics laboratory Laser Fusion Research CenterChina Academy of Engineering PhysicsMianyang 621900People’s Republic of China Joint laboratory for Extreme Conditions Matter Properties Southwest University of Science and TechnologyMianyang 621010People’s Republic of China IFSA Collaborative Innovation Center Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

We present an application of short-pulse laser-generated hard x rays for the diagnosis of indirectly driven double shell targets. Coneinserted double shell targets were imploded through an indirect drive approach on the upgraded SG-II laser facility. Then, based on thepoint-projection hard x-ray radiography technique, time-resolved radiography of the double shell targets, including that of their near-peakcompression, were obtained. The backlighter source was created by the interactions of a high-intensity short pulsed laser with a metalmicrowire target. Images of the target near peak compression were obtained with an Au microwire. In addition, radiation hydrodynamicsimulations were performed, and the target evolution obtained agrees well with the experimental results. Using the radiographic images, arealdensities of the targets were evaluated.

关键词： double projection point

中国散裂中子源二期靶站关键部件辐照损伤模拟计算

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物理学报 2024年第9期73卷 46-57页

作者：曹嵩殷雯周斌胡志良沈飞易天成王松林梁天骄中国科学院高能物理研究所北京100049 中国科学院大学核科学与技术学院北京100049 粤港澳中子散射科学技术联合实验室东莞523800

中国散裂中子源一期工程于2.18年通过国家验收,当前束流功率已经达到140 kW.为进一步提高靶站慢化器输出中子强度,已经提出中国散裂中子源二期500 kW功率升级计划.靶站关键部件长期受到高通量、高能量的粒子辐照,会产生较强的辐照损伤,... 详细信息

中国散裂中子源一期工程于2.18年通过国家验收,当前束流功率已经达到140 kW.为进一步提高靶站慢化器输出中子强度,已经提出中国散裂中子源二期500 kW功率升级计划.靶站关键部件长期受到高通量、高能量的粒子辐照,会产生较强的辐照损伤,影响着这些部件的使用寿命.本文首先使用PHITS3.33程序计算了钨、SS316不锈钢、6061铝合金3种材料的质子和中子原子离位截面以及氢、氦的产生截面,并分析了NRT(Norgett-Robinson-Torrens)模型和热平衡前原子复位修正(athermal recombination corrected,ARC)模型对材料离位损伤的影响.在此基础上结合中国散裂中子源二期靶站基线模型计算了靶站关键部件在500 kW的束流功率下运行5000 h产生的原子离位次数(displacement per atom,DPA)以及氢、氦的产额.计算结果表明,钨靶受辐照后产生的NRT-dpa,ARC-dpa,H和He产额最大值分别为8.01 dpa/y(1 y=2500 MW·h),2.39 dpa/y,5110 appm/y(atom parts per million,appm,每百万原子中产生该原子的个数)和884 appm/y.同样也计算了靶容器、慢化器反射体容器和质子束窗的辐照损伤值,根据这些部件的辐照损伤值预估了各自的使用寿命.这些结果对分析中国散裂中子源二期靶站关键部件的辐照损伤情况,构建合理的维护方案有着十分重要的意义.

关键词：中国散裂中子源二期靶站辐照损伤 ARC-dpa PHITS模拟

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Tunable magnetism and band structure in kagome materials RETi3Bi4 family with weak interlayer interactions

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Science Bulletin 2024年第17期69卷 2660-2664页

作者： Jingwen Guo Liqin zhou Jianyang Ding Gexing Qu Zhengtai Liu Yu Du Heng Zhang Jiajun Li Yiying Zhang Fuwei zhou Wuyi Qi Minghui Cui Yongxin Zhang Fengyi Guo tianqi wang Fucong Fei Yaobo Huang tian Qian Dawei Shen You Song Hongming Weng Fengqi Song National laboratory of Solid State Microstructures School of PhysicsSchool of Materials Science and Intelligent EngineeringCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Beijing National laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China university of Chinese Academy of Sciences Beijing 100049China State Key laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of SciencesShanghai 200050China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China State Key laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Atom Manufacturing Institute Nanjing 211806China National Synchrotron Radiation laboratory University of Science and Technology of ChinaHefei 230029China Songshan Lake Materials laboratory Dongguan 523808China

Kagome lattice,characterized by two-dimensional honeycomb network of corner-sharing triangles[1],presents flat bands,Dirac cones,and van Hove singularities(VHSs),which have been theoretically predicted and experimentally observed[2-4].When combined with spin-orbit coupling(SOC)and magnetism,novel properties have *** kagome materials vary,most of their strong interlayer interactions make the synthesized crystals not layered,and the properties deviating from the raw two-dimensional kagome *** crystals are difficult to fabricate into thin devices and to tune the physical properties of the materials using gate voltage.

关键词： network interlayer structure

Monodisperse polar NiCo_(2)O_(4) nanoparticles decorated porous graphene aerogel for high-performance lithium sulfur battery

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Journal of Energy Chemistry 2022年第11期31卷 239-251,I0008页

作者： Xiaohui tian Yingke zhou Bingyin Zhang Naomie Beolle Songwe Selabi Guiru wang The State Key laboratory of Refractories and Metallurgy Institute of Advanced Materials and NanotechnologyCollege of Materials and MetallurgyWuhan University of Science and TechnologyWuhan 430081HubeiChina School of Chemical Engineering and Biological Engineering Taiyuan University of Science and TechnologyTaiyuan 030024ShanxiChina

Lithium sulfur battery(LSB)is a promising energy storage system to meet the increasing energy demands for electric vehicles and smart grid,while its wide commercialization is severely inhibited by the"shuttle effect"of polysulfides,low utilization of sulfur cathode,and safety of lithium *** overcome these issues,herein,monodisperse polar NiCo_(2)O_(4)nanoparticles decorated porous graphene aerogel composite(NCO-GA)is *** aerogel composite demonstrates high conductivity,hierarchical porous structure,high chemisorption capacity and excellent electrocatalytic ability,which effectively inhibits the"shuttle effect",promotes the ion/electron transport and increases the reaction *** NCO-GA/S cathode exhibits high discharge specific capacity(1214.1 mAh g^(-1)at 0.1 C),outstanding rate capability(435.7 mAh g^(-1)at 5 C)and remarkable cycle stability(decay of 0.031%/cycle over 1000 cycles).Quantitative analyses show that the physical adsorption provided by GA mainly contributes to the capacity of NCO-GA/S at low rate,while the chemical adsorption provided by polar NiCo_(2)O_(4)contributes mainly to the capacity of NCO-GA/S with the increase of current density and *** work provides a new strategy for the design of GA-based composite with synergistic adsorption and electrocatalytic activity for the potential applications in LSB and related energy fields.

关键词： Porous graphene aerogel Monodisperse nanoparticles Polar NiCo_(2)O_(4) Chemical adsorption Catalytic conversion Lithium sulfur battery

Synthesis of yolk-shell Bi_(2)O_(3)@TiO_(2) submicrospheres with enhanced potassium storage

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Science china Chemistry 2022年第9期65卷 1807-1816页

作者： Yifan Xu Hehe Zhang Tangjing Ding Ruiqi tian Dongmei Sun Ming-Sheng wang Xiaosi zhou Jiangsu Key laboratory of New Power Batteries Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China State Key Lab of physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005China

Due to their enormous potential for large-scale energy storage,rechargeable potassium-ion batteries have been widely researched and ***,the drastic volume change of electrode materials induced by the huge size of potassium ions during cycling remains a challenge for the construction of stable ***,we propose a novel weak acid etching strategy to design and fabricate robust yolk-shell spheres with enough internal void space,in which the Bi_(2)O_(3) nanospheres are well confined in the compartments of TiO_(2) submicrospheres(y-Bi_(2)O_(3)@TiO_(2)).In situ transmission electron microscopy(TEM)and ex situ Xray diffraction(XRD)are conducted to elucidate the structural evolution of y-Bi_(2)O_(3)@TiO_(2) and the interaction between K^(+)and Bi_(2)O_(3) during *** to the yolk-shell nanoarchitecture and the superior buffering property of outer TiO_(2) covering,the as-obtained composite shows a high specific capacity of 383.5 mAh g^(−1) at 100 mA g^(−1),a considerable rate capacity of 134.1 mAh g^(−1) at 2 A g^(−1) and a stable cycling performance of 216.8 mAh g^(−1) at 500 mA g^(−1) over 500 cycles when used for potassium ***,the potassium-ion full battery,constructed by pairing y-Bi_(2)O_(3)@TiO_(2) anode with the thermally annealed 3,4,9,10-perylenetetracarboxylic dianhydride(PTCDA)cathode,exhibits an outstanding cycling ***,this carefully-designed strategy can inspire the further development of superior energy storage materials in the near future.

关键词： Bi_(2)O_(3) amorphous TiO_(2) yolk-shell structure anode potassium-ion batteries

Aqueous Zn^(2+)/Na^(+) dual-salt batteries with stable discharge voltage and high Coulombic efficiency by systematic electrolyte regulation

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Science china Chemistry 2022年第2期65卷 399-407页

作者： Chunli wang Lianshan Sun Maoxin Li Lin zhou Yong Cheng Xin Ao Xiuyun Zhang Limin wang Bingbing tian Hong Jin Fan SZU-NUS Collaborative Innovation Center for Optoelectronic Science&Technology International Collaborative Laboratory of 2D Materials for Optoelectronic Science and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China School of physical and Mathematical Science Nanyang Technological UniversitySingapore 637371Singapore china-Singapore International Joint Research Institute Guangzhou 510663China College of Physics Science and Technology Yangzhou UniversityYangzhou 225002China State Key laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryCASChangchun 130022China Institute for Energy Research Jiangsu UniversityZhenjiang 212013China

While aqueous Zn-Na hybrid batteries have garnered widespread attention because of their low cost and high safety,it is still challenging to achieve long cycle-life and stable discharge-voltage due to sluggish reaction kinetics,zinc dendrite formation,and side ***,we design a Zn^(2+)/Na^(+) dual-salt battery,in which sodiation of the NVP cathode favors zinc intercalation under an energy threshold,leading to decoupled redox reactions on the cathode and *** investigations of the electrolyte effects show that the ion intercalation mechanism and the kinetics in the mixture of triflate-and acetate-based electrolytes are superior to those in the common acetate-only *** a result,we have achieved fast discharging capability,suppressed zinc dendrites,a stable discharge voltage at 1.45 V with small polarization,and nearly 100%Coulombic efficiency in the dual-salt mixture electrolyte with optimized concentration of 1 M Zn(OAc)_(2)+1 M NaCF_(3)SO_(3).This work demonstrates the importance of electrolyte regulation in aqueous dual-salt hybrid batteries for the energy storage.

关键词： dual-salt battery high voltage acetate electrolyte zinc dendrite Na_(3)V_(2)(PO_(4))_(3)

Optimal energy-efficient scheme for two-way relay channel using physical layer network coding

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The Journal of china Universities of Posts and Telecommunications 2011年第6期18卷 51-58页

作者： zhou Min CUI Qi-mei wang Hui TAO Xiao-feng tian Hui MIKKO Valkama Key laboratory of Universal Wireless Communications Beijing University of Posts and Telecommunications Beijing 100876 China Department of Communications Engineering Tampere University of Technology Tampere PF1-33101 Finland

Systems are always designed and optimized based on full traffic load in the current literatures. However, practical systems are seldom operating at full load, even at peak traffic hours. Instead of maximizing system rate to achieve the full load, an optimal energy-efficient scheme to minimize the transmit power with required rates is investigated in this article. The considered scenario is a two-way relay channel using amplify-and-forward protocol of physical layer network coding, where two end nodes exchange messages via multiple relay nodes within two timeslots. A joint power allocation and relay selection scheme is designed to achieve the minimum transmit power. Through convex optimization theory, we firstly prove that single relay selection scheme is the most energy-efficient way for physical layer network coding. The closed-form expressions of power allocation are also given. Numerical simulations demonstrate the performance of the designed scheme as well as the comparison among different schemes.

关键词： energy-efficient two-way relay channel physical layer network coding power allocation relay selection rate constraints

Three-dimensional Covalent Organic Frameworks as Host Materials for Lithium-Sulfur Batteries

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Chinese Journal of Polymer Science 2020年第5期38卷 550-557,I0008页

作者： Zhen Li Hang-Yu zhou Fu-Lai Zhao tian-Xiong wang Xuesong Ding Bao-Hang Han Wei Feng Chinese Academy of Sciences(CAS)Key laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China university of Chinese Academy of Science Beijing 100049China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China

Two reported three-dimensional covalent organic frameworks(3D-COFs),COF-300 and COF-301,which have hierarchical porous structures and large pore volumes,were synthesized and employed as host materials for lithium-sulfur *** to possessing excellent porosities as well as abundant hydroxyl groups in the pore walls,COF-301 can not only trap lithium polysulfides(PSs)via physical adsorption inside the pores,but also capture PSs by chemical interactions to relieve the shuttle ***,it is the first time that 3D-COFs were utilized as host materials for lithium-sulfur batteries as well as hydroxyl groups were introduced into COFs for improving the battery *** a result,COF-301@S as cathode material could reserve the capacity of 411.6 mA·h·g^-1 after 500 cycles with only 0.081%fading per cycle at 0.5 C,exhibiting better battery performance compared with COF-300@*** study not only expands the applications of 3D-COFs but also provides a new route for designing lithium-sulfur batteries.

关键词： Three-dimensional covalent organic framework Flost material Lithium-sulfur battery Flydroxyl group Chemical interaction