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Attribution of Persistent Precipitation in the Yangtze–Huaihe River Basin during February 2019

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Advances in Atmospheric Sciences 2020年第12期37卷 1389-1404页

作者： zhixuan wang Jilin SUN Jiancheng WU Fangyue NING Weiqi CHEN College of Oceanic and Atmospheric Sciences Ocean University of ChinaQingdao 266100China Key laboratory of Physical Oceanography Ocean University of ChinaQingdao 266100China Zhangzhou Meteorological Observatory Zhangzhou Meteorological BureauZhangzhou 363000China Huaan Meteorological Observatory Huaan Meteorological BureauZhangzhou 363800China

In February 2019,a month-long persistent precipitation event occurred in the Yangtze–Huaihe River *** geopotential height field that affected the duration of this frontal rainfall was divided into a high-latitude part and a lowlatitude part for *** the high-latitude part,a two-wave structure led to quasi-stationary circulation,and the change of both the blocking high pressure and Arctic Oscillation phase caused cold air to invade South China continuously and changed the frontal *** mid-to-low latitudes,the persistent precipitation showed quasi-biweekly oscillation *** so-called“subtropical high–precipitation–anticyclone”(SHPA)feedback mechanism blocked the circulation systems in the mid-to-low latitudes and provided a continuous supply of water vapor for *** for the effect of sea surface temperature,the western North Pacific anomalous anticyclone stimulated by El Niño strengthened the intensity of the southerly wind and provided support for the redevelopment of the anticyclone system in the SHPA feedback *** sea surface temperature anomaly in the South China Sea provided sensible heating for precipitation,and convergent rising airflow was conducive to the occurrence of ***,the SHPA mechanism provides a reliable basis for the prediction of persistent precipitation in winter in the mid-to-low latitudes.

关键词： persistent precipitation feedback mechanism latent heat

Investigation of Nuclear Binding Energy and Charge Radius Based on Random Forest Algorithm

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原子能科学技术 2023年第4期57卷 704-712页

作者： CAI Boshuai YU Tianjun LIN Xuan ZHANG Jilong wang zhixuan YUAN Cenxi Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

The random forest algorithm was applied to study the nuclear binding energy and charge *** regularized root-mean-square of error(RMSE)was proposed to avoid overfitting during the training of random *** for nuclides with Z,N>7 is reduced to 0.816 MeV and 0.0200 fm compared with the six-term liquid drop model and a three-term nuclear charge radius formula,*** interest is in the possible(sub)shells among the superheavy region,which is important for searching for new elements and the island of *** significance of shell features estimated by the so-called shapely additive explanation method suggests(Z,N)=(92,142)and(98,156)as possible subshells indicated by the binding *** the present observed data is far from the N=184 shell,which is suggested by mean-field investigations,its shell effect is not predicted based on present *** significance analysis of the nuclear charge radius suggests Z=92 and N=136 as possible *** effect is verified by the shell-corrected nuclear charge radius model.

关键词： nuclear binding energy nuclear charge radius random forest algorithm

Hybrid structure of iron single atoms and metallic titanium for photothermal ethanol steam reforming

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Science China Chemistry 2024年第3期67卷 848-854页

作者： Dachao Yuan Guanda Han zhixuan wang Jianguo Zhao Kailuan Li Pengfei wang Jianjun Hao Yaguang Li Jinhua Ye College of Mechanical and Electrical Engineering Technology Innovation Center of Intelligent Agricultural EquipmentHebei Agricultural UniversityBaoding 071001China Research Center for Solar Driven Carbon Neutrality The College of Physics Science and TechnologyInstitute of Life Science and Green DevelopmentHebei UniversityBaoding 071002China International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)1-1 NamikiTsukubaIbaraki 305-0044Japan Graduate School of Chemical Science and Engineering Hokkaido UniversitySapporo 060-0814Japan

Photothermal ethanol steam reforming(ESR) is currently limited by low intrinsic activity and strong solar energy ***,we synthesized Fe single atoms supported on CeO_(2)(SA Fe-CeO_(2)) to exhibit excellent low-temperature ESR activity with a hydrogen production rate of 512 mmol g^(-1)h^(-1) at 350℃,becuase of the high oxidation state of Fe single atoms to weaken the reaction barrier of ethanol ***,a heterostructure of SA Fe-CeO_(2) and Ti foil could eliminate 66% of infrared radiation via the size effect,thus achieving a 3.5 sun-driven temperature of 347℃.Consequently,the heterostructure of SA Fe-CeO_(2) and Ti foil shows a hydrogen generation rate of 984 mmol g^(-1)h^(-1) of ESR and 11.31% of solar-to-hydrogen energy conversion efficiency,which outperforms other photothermal ethanol-hydrogen production *** study provides a new path for designing active catalytic sites and trapping light energy of photothermal catalysts.

关键词： photothermal catalysis single atoms heterostructure ethanol steam reforming iron

Evaluation of the Moderately Leading Development in China's Electric Power Industry

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Electricity 2011年第3期22卷 12-15页

作者： wang zhixuan China Electricity Council

This article analyzes the importance of the moderately leading development in electric power industry, and the basic policy of the industry in China. It evaluates if the industry is appropriately developed ahead of other industries from the aspects of legal structuring, planning, electricity pricing mechanism, fixed assets investment, human resources, technological innovation and production and supply capacity etc., and proposes f ive recommendations.

关键词： electric power industry development policy evaluation

Thermal Power Desulphurization——Breakthrough and Prospects

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Electricity 2007年第2期18卷 46-49页

作者： wang zhixuan wang Ben（译） Department of Development Environment and Resources China Electricity Council 不详

China had commissioned a lot of FGD installations in the past decades, especially in the last ten odd years. Facing the target of reducing SO2 emissions by 10% in the 11th Five-Year Plan period, it is important for bo... 详细信息

关键词：热能发电脱硫技术突破电力工业

Sulfur Dioxide Emission Control,Blockade and Drainage

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Electricity 2005年第3期16卷 55-57页

作者： wang zhixuan Jin Wen China Electricity Council 不详

This paper presents the present status of sulfur dioxide emission from thermal plants in China, tells the main problems existing in its emission control and finally gives out suggestions to the problems, that is, to c... 详细信息

关键词： sulfur dioxide emission control standard supervision

Research progress on low-power artificial intelligence of things(AIoT) chip design

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Science China(Information Sciences) 2023年第10期66卷 135-151页

作者： Le YE zhixuan wang Tianyu JIA Yufei MA Linxiao SHEN Yihan ZHANG Heyi LI Peiyu CHEN Meng WU Ying LIU Yiqi JING Hao ZHANG Ru HUANG School of Integrated Circuits Peking University Advanced Institute of Information Technology of Peking University

An artificial intelligence of things(AIoT) chip is a critical hardware component in edge devices that supports data acquisition and processing in the artificial intelligence(AI) era. In this paper, we introduce the architecture and circuit techniques for AIoT systems as well as the design challenges associated with *** address the design challenges, we describe our design approaches to improve energy efficiency from the standpoints of system architecture, AI computing, and data acquisition circuits. Meanwhile, we present our most recent research progress and state-of-the-art AIoT chip demonstrations at a prestigious conference. Our design techniques improve power and energy efficiency by orders of magnitude on corresponding state of the arts(SOTA), allowing for an advanced AIoT chip design.

关键词： artificial intelligence (AI) Internet of Things (IoT) low-power chip design random sparse event (RSE)

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选择性离子吸附原理与材料制备

化学进展 2023年第5期35卷 780-793页

作者：王芷铉郑少奎北京师范大学环境学院北京100875

制备特定无机阴、阳离子的选择性吸附材料有利于保障饮用水安全、控制外排污水生态风险、保障地表水环境质量,具有非常广泛的市场需求和应用前景。选择性离子吸附材料研发始于20世纪60年代,经过60年的高速发展,选择性离子吸附材料领域... 详细信息

制备特定无机阴、阳离子的选择性吸附材料有利于保障饮用水安全、控制外排污水生态风险、保障地表水环境质量,具有非常广泛的市场需求和应用前景。选择性离子吸附材料研发始于20世纪60年代,经过60年的高速发展,选择性离子吸附材料领域目前依旧保持了极高的研究热度和研究水平。本文概述了选择性离子吸附材料的研发历史、现状和主要研究方向,重点总结了四种选择性离子吸附原理(即分子印迹技术原理、软硬酸碱理论、非静电作用原理和竞争离子自我抑制原理)和它们的研究历史、选择性离子吸附材料制备与应用情况,展望了未来的研究方向,这些信息的整理归纳将为未来的选择性离子吸附材料研发、水中特定离子浓度控制提供重要的借鉴。

关键词：选择性离子吸附原理水处理吸附剂研究进展

Stable Ni-rich layered oxide cathode for sulfide-based all-solid-state lithium battery

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eScience 2022年第5期2卷 537-545页

作者： Yue wang zhixuan wang Dengxu Wu Quanhai Niu Pushun Lu Tenghuan Ma Yibo Su Liquan Chen Hong Li Fan Wu Tianmu Lake Institute of Advanced Energy Storage Technologies Liyang213300JiangsuChina Yangtze River Delta Physics Research Center Liyang213300JiangsuChina Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou215123China Science and Technology Research Institute China Three Gorges Corporation Beijing China

Sulfide-based all-solid-state lithium-ion batteries(ASSLIBs)are one of the most promising energy storage technologies due to their high safety and ionic *** achieve greater energy density,a Ni-rich layered oxide LiNi_(x)Co_(y)M_(1-x-y)O_(2)(NCM,MMn/Al,x≥0.6)is desirable due to its relatively high voltage and large ***,interfacial side reactions between the NCM and sulfide solid electrolytes lead to undesirable interfacial passivation layers and low ionic conductivity,thereby degrading the electrochemical performance of NCM sulfide all-solid-state ***,a time-/cost-effective sulfidation strategy is exploited to sulfidize a Ni-rich NCM_(88) cathode in a mixed gas atmosphere of N_(2) and CS_(2).A new type of cathode(NCM88-S)with an ultrathin(∼2nm)surface layer is obtained,which significantly reduces the interfacial side reactions/resistance and improves the interfacial *** resulting NCM_(88)-S/Li_(6)PS_(5)Cl/Li_(4)Ti_(5)O_(12) ASSLIB exhibits superior performance,including a high discharge specific capacity(200.7 mAh g−1)close to that of liquid batteries,excellent cycling performance(a capacity retention of 87%after 500 cycles),and satisfactory rate performance(158.3 mAh g^(−1) at 1C).

关键词： Sulfide solid electrolytes Ni-rich oxide cathode All-solid-state batteries Surface modification Interface engineering