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The historical logics and geographical patterns of rural-urban governance in China

Journal of Geographical Sciences 2022年第7期32卷 1225-1240页

作者： YE Chao PAN Jiawei LIU Zhimin Key Laboratory of Geographic Information Science(Ministry of Education) School of Geographic SciencesResearch Center for China Administrative DivisionEast China Normal UniversityShanghai 200241China

The advent of a mobile society has led to profound changes in China’s traditional rural-urban pattern and called for new strategies for urban and rural governance.Based on a macro perspective of temporal and spatial evolution,this study analyzes the historical logics of rural-urban governance,explores the geographical patterns of challenges in China’s rural-urban governance,and finally puts forward targeted strategies for rural-urban governance toward integrated and sustainable development in China.From the historical perspective,the urban originates from the rural,and the connotation of rural,that is,a regional-scale outlook,rural-urban relations,and sociocultural interaction,forms the traditional approach to rural-urban governance.China’s rural-urban governance has evolved from antagonism toward integration.In terms of theoretical development,the turn toward mobility is an important driving factor shaping and promoting the transformation of research focus on rural-urban governance.The mobility of urban and rural factors has especially in recent decades brought extensive challenges for governance,which are highlighted by the disintegration of the stability of rural and urban structures,growing regional disparities in rural education levels,and serious aging and hollowing crises in rural areas.We therefore propose that rural-urban governance should give sufficient consideration to the convergence of wider interests;realize social potential through institutional,cultural and spatial restructuring;and attach importance to collaborative development and governance.And the transfer of rural problems to urban areas should be paid attention to by rural-urban governance.This research enriches the knowledge regarding the logics and patterns of China’s rural-urban governance from an interdisciplinary perspective.It is also helpful in the promotion of rural-urban integration and sustainable development,especially at a time when the mobility of social factors between rural areas and urban areas increasingly challenges tradit

关键词： rural-urban relation urbanization sustainable development mobility regional disparities

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Design of porous organic polymer catalysts for transformation of carbon dioxide

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Green Chemical Engineering 2022年第2期3卷 96-110页

作者： Guipeng Ji Yanfei Zhao zhimin liu Beijing National Laboratory for Molecular Sciences Key Laboratory of Colloid and Interface and Thermodynamics(CAS)Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China

The transformation of carbon dioxide(CO_(2))into fuels and chemicals is an interesting topic,which has been paid much attention in recent years.The materials with specific functionalities are highly required for CO_(2)capture and conversion,which have been widely investigated.As an emerging material platform,porous organic polymers(POPs)have attracted considerable scientific interest due to their distinctive properties such as tailorable func-tionalization,large surface areas,adjustable porosity,versatile polymerizations,good physicochemical and thermal stability.Our group focuses on designing and synthesizing POPs via introducing CO_(2)-philic groups and organic ligands into the skeletons of the polymers and immobilizing metal active species onto their surface,and a series of POPs with functional groups,such as,azo,Tr€oger's base,fluorine,phenolic–OH,have been prepared for CO_(2)transformation.In this review article,we mainly introduce our recent work on design of POPs-based catalysts for CO_(2)transformation,which include POPs-based catalysts for cycloaddition reactions of epoxides and prop-argylic alcohols with CO_(2),for reductive transformation of CO_(2)with H 2,for photocatalytic/electrocatalytic reduction of CO_(2).In addition,the perspectives of the POP-based catalysts for CO_(2)transformation will be discussed as well.

关键词： Porous organic polymers Carbon dioxide CO_(2)transformation

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俄罗斯档案中的李翔梧与刘志敏

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档案管理 2020年第5期 109-112,114页

作者：李智民河南省政协社会法制委员会

本文通过档案还原上个世纪莫斯科中山大学学生李翔梧、刘志敏真实的生活轨迹,挖掘其中的档案价值。

关键词：俄罗斯档案李翔梧刘志敏莫斯科中山大学

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Electronic properties and photodegradation ability of Nd-TiO_(2)for phenol

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Journal of Rare Earths 2022年第7期40卷 1063-1072页

作者： zhimin Zhao Jinjia liu Gala Sa Aiju Xu Inner Mongolia Key Laboratory of Green Catalysis College of Chemistry and Environmental ScienceInner Mongolia Normal UniversityHohhot 010022China State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of SciencesTaiyuan 030001China National Energy Center for Coal to Clean Fuels Synfuels China Co.Ltd.Beijing 101400China

In this study,the photocatalytic activity of Nd-TiO_(2)photocatalysts obtained by common hydrothermal method was evaluated by practical experiments and theoretical calculations based on density functional theory(DFT).The synthesized photocatalysts were characterized by X-ray diffraction(XRD),N_(2)adsorption-desorption,Fourier transform infrared spectroscopy(FT-IR),high resolution transmission electron microscopy(HRTEM),X-ray photoelectron spectroscopy(XPS),UV-Vis diffuse reflectance spectroscopy(DRS),and photoluminescence(PL)to study their physical/chemical prope rties.At the same time,the photoelectronic performance was also investigated.The photodegradation ability of asprepared photocatalysts and the effect of Nd doped amount and photocatalysts dosage were investigated by the photodegradation of phenol(30 mg/L)under 400 W metal halide lamp(UV-Vis).The effect of Nd on electronic properties of TiO_(2)and adsorption ability of phenol were discussed.Results show the red-shift wavelength of 0.5 mol%Nd-TiO_(2),indicating that its absorption capacity is stronger than pristine TiO_(2)in the same wavelength range.The result of DFT calculations demonstrates that the optical bandgap of Nd-TiO_(2)is profoundly reduced,thus the light absorption ability is promoted,which will be responsible for the enhanced photocatalytic performance of Nd-TiO_(2).0.5 mol%Nd is an optimum value for photodegradation phenol,and phenol can be completely degraded by 0.5 mol%Nd-TiO_(2)for 210 min,the higher catalytic performance is derived from the efficient separation of e-/h+pairs.Moreover,the adsorption energy calculations of phenol on TiO_(2)(101)and Nd-TiO_(2)(101)demonstrate that the Nd doping can significantly enhance the adsorption ability of phenol on catalyst surfaces because of the formation of Nd-O bonds.At last,the stability measurement through four recycles exhibits that 0.5 mol%Nd-TiO_(2)possesses excellent stability.

关键词： TiO_(2) Hydrothermal method Density functional theory Phenol Photodegradation Rare earths

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Photo-piezoelectric synergistic degradation of typical volatile organic compounds on BaTiO_(3)

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Chinese Chemical Letters 2022年第1期33卷 410-414页

作者： Qin liu Weina Zhao zhimin Ao Taicheng An Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China

Explore the photo-piezoelectric synergistic micro-mechanism by density functional theory(DFT)calculations at the electronic and atomic level is important.In this work,to understand the synergistic mechanism,atomic and electronic properties of typical piezoelectric and photocatalytic material BaTiO_(3)were initially investigated with different strains.Subsequently,the adsorption of volatile organic compounds(VOCs)on the BaTiO_(3)(001)surface was determined during the piezoelectric process.In addition,the relationship between deformation ratio,the electronic structure and adsorption energy was understood in the deformation ratio range of 7%-12%for the optimal catalytic effect.The results of charge density differences and Born effective charge reveal the synergistic mechanism of piezoelectric photocatalysis.The built-in electric field formed by polarization results in the enhanced separation of charges,which makes the surface charges aggregation,enhancing the adsorption of VOCs,and benefiting the subsequent photocatalytic degradation.This work can provide significant theoretical guidance for the piezoelectric photocatalytic degradation of pollutants with the optimal strain range.

关键词： Photocatalysis Photo-piezoelectric synergistic Polarization Charge separation BaTiO_(3) Volatile organic compounds(VOCs)

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ON DISCRETE ENERGY DISSIPATION OF MAXWELL’S EQUATIONS IN A COLE-COLE DISPERSIVE MEDIUM

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Journal of Computational Mathematics 2023年第5期41卷 980-1002页

作者： Baoli Yin Yang liu Hong Li zhimin Zhang School of Mathematical Sciences Inner Mongolia UniversityHohhot 010021China Beijing Computational Science Research Center Beijing 100193China Department of Mathematics Wayne State UniversityDetroitMI 48202USA

A simple criterion is studied for the first time for identifying the discrete energy dissipation of the Crank-Nicolson scheme for Maxwell’s equations in a Cole-Cole dispersive medium.Several numerical formulas that approximate the time fractional derivatives are investigated based on this criterion,including the L1 formula,the fractional BDF-2,and the shifted fractional trapezoidal rule(SFTR).Detailed error analysis is provided within the framework of time domain mixed finite element methods for smooth solutions.The convergence results and discrete energy dissipation law are confirmed by numerical tests.For nonsmooth solutions,the method SFTR can still maintain the optimal convergence order at a positive time on uniform meshes.Authors believe this is the first appearance that a second-order time-stepping method can restore the optimal convergence rate for Maxwell’s equations in a Cole-Cole dispersive medium regardless of the initial singularity of the solution.

关键词： Discrete energy dissipation Crank-Nicolson scheme Maxwell’s equations Shifted fractional trapezoidal rule Mixed finite element methods

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Recent Advances in Wide-Bandgap Organic-Inorganic Halide Perovskite Solar Cells and Tandem Application

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Nano-Micro Letters 2023年第5期15卷 254-297页

作者： Ting Nie zhimin Fang Xiaodong Ren Yuwei Duan Shengzhong(Frank)liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Dalian National Laboratory for Clean Energy iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Perovskite-based tandem solar cells have attracted increasing interest because of its great potential to surpass the Shockley-Queisser limit set for single-junction solar cells.In the tandem architectures,the wide-bandgap(WBG)perovskites act as the front absorber to offer higher open-circuit voltage(VOC)for reduced thermalization losses.Taking advantage of tunable bandgap of the perovskite materials,the WBG perovskites can be easily obtained by substituting halide iodine with bromine,and substituting organic ions FA and MA with Cs.To date,the most concerned issues for the WBG perovskite solar cells(PSCs)are huge VOC deficit and severe photo-induced phase separation.Reducing VOC loss and improving photostability of the WBG PSCs are crucial for further efficiency breakthrough.Recently,scientists have made great efforts to overcome these key issues with tremendous progresses.In this review,we first summarize the recent progress of WBG perovskites from the aspects of compositions,additives,charge transport layers,interfaces and preparation methods.The key factors affecting efficiency and stability are then carefully discussed,which would provide decent guidance to develop highly efficient and stable WBG PSCs for tandem application.

关键词： Efficiency Perovskite Solar cell Stability Wide-bandgap

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表征不同DNA高阶结构的单分子方法

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工程(英文) 2023年第5期24卷 276-291,I0008页

作者： Yonglin liu Tianyuan Bian Yan liu zhimin Li Yufeng Pei Jie Song School of Molecular Medicine Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China The Cancer Hospital of the University of Chinese Academy of Sciences Institute of Basic Medicine and Cancer(IBMC)Chinese Academy of SciencesHangzhou 310022China Academy of Medical Engineering and Translational Medicine(AMT) Tianjin UniversityTianjin 300072China Institute of Nano Biomedicine and Engineering Department of Instrument Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

DNA不仅是生命遗传信息的载体,而且是一种高度可编程和自组装的纳米材料。不同的DNA结构与其生物和化学功能有关。因此,了解各种DNA结构的物理和化学性质在生物学和纳米化学中具有重要意义。然而,批量分析忽略了溶液中DNA结构的异质性... 详细信息

DNA不仅是生命遗传信息的载体,而且是一种高度可编程和自组装的纳米材料。不同的DNA结构与其生物和化学功能有关。因此,了解各种DNA结构的物理和化学性质在生物学和纳米化学中具有重要意义。然而,批量分析忽略了溶液中DNA结构的异质性。单分子方法是观察单个分子行为和探测自由能态高度非均质性的有力工具。在本文中,介绍了单分子方法,包括单分子检测和操作方法,并讨论了这些方法如何有助于测量单链/双链DNA(ss/dsDNA)、DNA高阶结构和DNA纳米结构的分子性质。本文为DNA纳米技术与单分子方法的结合提供了一个新的视角,以了解DNA和其他生物物质和软物质的生物物理特性。

关键词： DNA结构单分子生物物质分子性质软物质遗传信息操作方法批量分析

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Precise genome editing with base editors

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Medical Review 2023年第1期3卷 75-84页

作者： Hongcai liu Yao Zhu Minjie Li zhimin Gu Institute of Systems Medicine Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijingChina Suzhou Institute of Systems Medicine SuzhouJiangsu ProvinceChina Institute of Systems Medicine Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100005China Suzhou Institute of Systems Medicine Suzhou 215123Jiangsu ProvinceChina

Single-nucleotide variants account for about half of known pathogenic genetic variants in human.Genome editing strategies by reversing pathogenic point mutations with minimum side effects have great therapeutic potential and are now being actively pursued.The emerge of precise and effcient genome editing strategies such as base editing and prime editing provide powerful tools for nucleotide conversion without inducing double-stranded DNA breaks(DSBs),which have shown great potential for curing genetic disorders.A diverse toolkit of base editors has been devel-oped to improve the editing effciency and accuracy in different context of application.Here,we summarized the evolving of base editors(BEs),their limitations and future perspective of base editing-based therapeutic strategies.

关键词： adenine base editor base editing clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein cytosine base editor

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Organic ammonium halides enhance the performance of Pb-Sn perovskite solar cells

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Journal of Semiconductors 2022年第12期43卷 5-8页

作者： zhimin Fang Lixiu Zhang Shengzhong(Frank)liu Liming Ding Key Laboratory of Applied Surface and Colloid Chemistry(MoE) School of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

With the efforts of scientists around the world,the power conversion efficiency(PCE)of perovskite solar cells(PSCs)has reached 25.7%.To further improve the efficiency and break through the Shockley-Queisser(S-Q)limit,it is promising to construct all-perovskite tandem solar cells via combining wide-bandgap and narrow-bandgap perovskites[1−5].As the key light-harvesting material for the bottom cell in all-per-ovskite tandem devices,the narrow-bandgap Pb-Sn mixed per-ovskites have attracted increasing interest in recent years[6−8].However,the Pb-Sn mixed perovskites suffer from uncontrol-lable crystallization,easy oxidation of Sn2+and high defect density,which significantly limit PCE improvement[9,10].Organ-ic ammonium halides can improve the efficiency and stabil-ity of Pb-Sn mixed PSCs.

关键词： perovskite ammonium narrow

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