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Polyimide covalent organic frameworks as efficient solid-state li^(+) electrolytes

Science China Chemistry 2024年第5期67卷 1647-1652页

作者： Xu liu Shi Wang Siqi liu Chengfang liu Xiangchun li Jian Wu dazhi li Shihao Xu Chongyang liu Wen-Yong Lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&TelecommunicationsNanjing 210023China

Covalent organic frameworks(COFs) are attractive porous crystalline materials with extremely high stability, easy functionalization, and open channels, which are expected to be unique ion conductors/transporters in lithium ion batteries(liBs). Despite recent advances, low ion conductivity and low transference number, resulting in low charging/discharging rate, low energy density, and short battery life, are the main issues that limit their direct application as solid electrolytes in liBs. Here, we designed and synthesized a novel polyimide COF, namely, TAPA-PDI-COF, with abundant C=O groups, which has been successfully employed as high-performance solid electrolytes by doping TAPA-PDI-COF and succinonitrile(SN). Both the well-defined nanochannels of COFs and SN confined in the well-aligned channels restricted the free migration of anions, while C=O on COFs and CN groups of SN enhanced li^(+) transport, thus achieving a high ion conductivity of 0.102 m S cm^(-1)at 80 °C and a high lithium-ion transference number of 0.855 at room temperature. According to density functional theory(DFT)calculations, li-ion migration mainly adopted in-plane transport rather than the axial pathway, which may be due to the shorter hopping distances in the planar pathway. The results suggest an effective strategy for the design and development of all-solidstate ionic conductors for achieving high-performance liBs.

关键词： lithium ion batteries(liBs) covalent organic frameworks(COFs) solid-state ion conductors solid-state electrolytes ion conductivity

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Improved Particle Swarm Optimization for Parameter Identification of Permanent Magnet Synchronous Motor

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Computers, Materials & Continua 2024年第5期79卷 2187-2207页

作者： Shuai Zhou dazhi Wang Yongliang Ni Keling Song Yanming li School of Information Science and Engineering Northeastern UniversityShenyang110819China China Northern Vehicle Research Institute Beijing100072China

In the process of identifying parameters for a permanent magnet synchronous motor,the particle swarm optimization method is prone to being stuck in local optima in the later stages of iteration,resulting in low parameter accuracy.This work proposes a fuzzy particle swarm optimization approach based on the transformation function and the filled function.This approach addresses the topic of particle swarmoptimization in parameter identification from two perspectives.Firstly,the algorithm uses a transformation function to change the form of the fitness function without changing the position of the extreme point of the fitness function,making the extreme point of the fitness function more prominent and improving the algorithm’s search ability while reducing the algorithm’s computational burden.Secondly,on the basis of themulti-loop fuzzy control systembased onmultiplemembership functions,it is merged with the filled function to improve the algorithm’s capacity to skip out of the local optimal solution.This approach can be used to identify the parameters of permanent magnet synchronous motors by sampling only the stator current,voltage,and speed data.The simulation results show that the method can effectively identify the electrical parameters of a permanent magnet synchronous motor,and it has superior global convergence performance and robustness.

关键词： Transformation function filled function fuzzy particle swarm optimization algorithm permanent magnet synchronous motor parameter identification

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Electrohydrodynamic printing for high resolution patterning of flexible electronics toward industrial applications

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InfoMat 2024年第2期6卷 28-56页

作者： Zhouping Yin dazhi Wang Yunlong Guo Zhiyuan Zhao liqiang li Wei Chen Yongqing Duan State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhanthe People's Republic of China Optics Valley Laboratory Wuhanthe People's Republic of China Key Laboratory for Micro/Nano Technology and System of liaoning Province Dalian University of TechnologyDalianthe People's Republic of China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijingthe People's Republic of China Institute of Molecular Aggregation Sciences Tianjin UniversityTianjinthe People's Republic of China

Electrohydrodynamic(EHD)printing technique,which deposits micro/nanostructures through high electric force,has recently attracted significant research interest owing to their fascinating characteristics in high resolution(licability(ink viscosity 1–10000 cps),tunable printing modes(electrospray,electrospinning,and EHD jet printing),and compatibility with flexible/wearable applications.Since the laboratory level of the EHD printed electronics'resolution and efficiency is gradually approaching the commercial application level,an urgent need for developing EHD technique from laboratory into industrialization have been put forward.Herein,we first discuss the EHD printing technique,including the ink design,droplet formation,and key technologies for promoting printing efficiency/accuracy.Then we summarize the recent progress of EHD printing in fabrication of displays,organic field-effect transistors(OFETs),transparent electrodes,and sensors and actuators.Finally,a brief summary and the outlook for future research effort are presented.

关键词： display electrohydrodynamic printing flexible electronics organic field-effect transistor printhead

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FGF4 protects the liver from immune-mediated injury by activating CaMKKβ-PINK1 signal pathway to inhibit hepatocellular apoptosis

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Acta Pharmaceutica Sinica B 2024年第4期14卷 1605-1623页

作者： Zhifeng Huang Tongtong Pan liang Xu Lu Shi Xiong Ma liya Zhou Luyao Wang Jiaojiao Wang Guoqing Zhu dazhi Chen lingtao Song Xiaomin Pan Xiaodong Wang Xiaokun li Yongde Luo Yongping Chen Hepatology Diagnosis and Treatment Center Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseasesthe First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325035China Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)&School of Pharmaceutical SciencesWenzhou Medical UniversityWenzhou 325035China School of Laboratory Medicine and life Sciences Wenzhou Medical University&Key Laboratory of Laboratory MedicineMinistry of EducationWenzhou Medical UniversityWenzhou 325035China Division of Gastroenterology and Hepatology Key Laboratory of Gastroenterology and HepatologyMinistry of HealthState Key Laboratory for Oncogenes and Related GenesRenji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200001China Hangzhou Medical College Hangzhou 311300China

Immune-mediated liver injury (Ili) is a condition where an aberrant immune response due to various triggers causes the destruction of hepatocytes. Fibroblast growth factor 4 (FGF4) was recently identified as a hepatoprotective cytokine;however, its role in Ili remains unclear. In patients with autoimmune hepatitis (type of Ili) and mouse models of concanavalin A (ConA)- or S-100-induced Ili, we observed a biphasic pattern in hepatic FGF4 expression, characterized by an initial increase followed by a return to basal levels. Hepatic FGF4 deficiency activated the mitochondria-associated intrinsic apoptotic pathway, aggravating hepatocellular apoptosis. This led to intrahepatic immune hyper-reactivity, inflammation accentuation, and subsequent liver injury in both Ili models. Conversely, administration of recombinant FGF4 reduced hepatocellular apoptosis and rectified immune imbalance, thereby mitigating liver damage. The beneficial effects of FGF4 were mediated by hepatocellular FGF receptor 4, which activated the Ca^(2+)/calmodulin-dependent protein kinasekinase 2 (CaMKKβ) and its downstream phosphatase and tensin homologue-induced putative kinase 1 (PINK1)-dependent B-cell lymphoma 2-like protein 1-isoform L (Bcl-XL) signalling axis in the mitochondria. Hence, FGF4 serves as an early response factor and plays a protective role against Ili, suggesting a therapeutic potential of FGF4 and its analogue for treating clinical immune disorder-related liver injuries.

关键词： Fibroblast growthfactor 4 Fibroblast growth factor receptor 4 Immune liver injury Ca^(2+)/Calmodulin dependent protein

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幼儿园园长领导力城乡差异及影响因素分析

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学前教育研究 2024年第7期 25-37页

作者：黎大志刘军湖南师范大学长沙410081 湖南幼儿师范高等专科学校常德415000

园长领导力是决定一所幼儿园保教质量的关键因素。本研究利用文献分析法和德尔菲法构建了由学校文化领导力、人力资源领导力、保育教育领导力和行政管理领导力四个维度组成的园长领导力指标体系,并根据该指标体系设计了幼儿园园长领导... 详细信息

园长领导力是决定一所幼儿园保教质量的关键因素。本研究利用文献分析法和德尔菲法构建了由学校文化领导力、人力资源领导力、保育教育领导力和行政管理领导力四个维度组成的园长领导力指标体系,并根据该指标体系设计了幼儿园园长领导力调查问卷。在使用SPSS 26.0对2 177份有效样本进行分析后,结果表明:我国幼儿园园长自我感知的领导力总体水平较高,但是领导力各个维度发展不均衡,城乡之间以及不同园长个体的领导力差异较大。城乡幼儿园园长总体领导力以及领导力各维度和各指标上均呈现出统计学上的差异,城镇幼儿园园长领导力水平显著高于农村园长。职务、年龄、教龄、职称,任职幼儿园的性质、等级、所在位置、规模,以及园长年培训次数均能预测园长的领导力水平。基于研究结果,本研究提出城乡园长领导力的改进对策:盯紧“关键少数”,为城乡园长的职业发展提供支持性环境;加强城乡互动,构建城乡园长领导能力发展共同体;充分发挥园长主观能动作用,全面提升自身领导能力。

关键词：幼儿园园长领导力城乡差异

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多车场带时间窗车辆路径问题的改良自适应大邻域搜索算法

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计算机应用 2024年第6期44卷 1897-1904页

作者：李焱潘大志郑思情西华师范大学数学与信息学院四川南充637009 最优化理论与应用四川省高校重点实验室(西华师范大学) 四川南充637009

针对多车场带时间窗车辆路径问题(MDVRPTW),提出一种改良自适应大邻域搜索算法(IALNS)。首先,在构造初始解阶段改进一种路径分割算法;其次,在优化阶段利用设计的移除和修复启发式算子相互竞争择优选取算子,为各算子引入评分机制,采用轮... 详细信息

针对多车场带时间窗车辆路径问题(MDVRPTW),提出一种改良自适应大邻域搜索算法(IALNS)。首先,在构造初始解阶段改进一种路径分割算法;其次,在优化阶段利用设计的移除和修复启发式算子相互竞争择优选取算子,为各算子引入评分机制,采用轮盘赌方式选取启发式算子;同时,将迭代周期分段,动态调整各周期内的算子权重信息,有效避免算法陷入局部最优;最后,采取模拟退火机制作为解的接受准则。在Cordeau规范算例上进行实验,确定IALNS的相关参数,将所提算法求解结果与该领域其他代表性研究成果对比。实验结果表明,所提算法与变邻域搜索(VNS)算法的求解误差不超过0.8%,在某些算例上甚至更优;与多相位改进的蛙跳算法相比,算法的平均耗时减少12.8%,所提算法在绝大多数算例上运行时间更短。因此,验证了所提算法是求解MDVRPTW的有效算法。

关键词：多车场带时间窗车辆路径问题自适应大邻域搜索序列分割自适应权重模拟退火

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Citron C-05 inhibits both the penetration and colonization of Xanthomonas citri subsp.citri to achieve resistance to citrus canker disease

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Horticulture Research 2020年第1期7卷 1981-1992页

作者： Hongyan Fu Mingming Zhao Jing Xu limei Tan Jian Han dazhi li Meijun Wang Shunyuan Xiao Xianfeng Ma Ziniu Deng College of Horticulture Hunan Agricultural University410128 ChangshaHunanChina National Center for Citrus Improvement 410128 ChangshaHunanChina Hunan Horticultural Research Institute 410125 ChangshaHunanChina Institute for Bioscience and Biotechnology Research&Department of Plant Sciences and Landscape Architecture University of Maryland College ParkRockvilleMD 20850USA

Citrus canker,caused by Xanthomonas citri subsp.citri(Xcc),is a serious bacterial disease that affects citrus production worldwide.Citron C-05(Citrus medica)is the only germplasm in the Citrus genus that has been identified to exhibit strong resistance to Xcc.However,it has not been determined when,where,and how Xcc is restricted in the tissues of Citron C-05 during the infection process.In the present study,we investigated the spatiotemporal growth dynamics of an eGFP-labeled virulent Xcc(eGFP-Xcc)strain in Citron C-05 along with five susceptible biotypes(i.e.,lemon,pummelo,sour orange,sweet orange,and ponkan mandarin)upon inoculation via the spraying or leaf infiltration of a bacterial suspension.The results from extensive confocal laser scanning microscopy analyses showed that while Xcc grew rapidly in plants of all five susceptible genotypes,Xcc was severely restricted in the epidermal and mesophyll cell layers of the leaves of Citron C-05 in the early stage of infection.Not surprisingly,resistance against Xcc in Citron C-05 was found to be associated with the production of reactive oxygen species and hypersensitive response-like cell death,as well as greater upregulation of several defense-related genes,including a pathogenesis-related gene(PR1)and a glutathione S-transferase gene(GST1),compared with sweet orange as a susceptible control.Taken together,our results not only provide further valuable details of the spatiotemporal dynamics of the host entry,propagation,and spread of Xcc in both resistant and susceptible citrus plants but also suggest that resistance to Xcc in Citron C-05 may be attributed to the activation of multiple defense mechanisms.

关键词： citrus Xanthomonas resistance

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近20年手机摄影研究综述

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湖南包装 2024年第1期39卷 13-17页

作者：伍海翔黎大志湖南师范大学湖南长沙410012 湖南工商大学湖南长沙410205 湖南非物质文化遗产影像信息重点实验室湖南长沙410012

文章对近20年涉及手机摄影主题的社科类中英文文献进行了广泛检索和梳理,文献主要来源于中国知网、Web of Science和相关专著。研究发现目前手机摄影的文献主要集中在行为与主题、美学与审美、社交与媒介、图像与权力4个方面。可以从美... 详细信息

文章对近20年涉及手机摄影主题的社科类中英文文献进行了广泛检索和梳理,文献主要来源于中国知网、Web of Science和相关专著。研究发现目前手机摄影的文献主要集中在行为与主题、美学与审美、社交与媒介、图像与权力4个方面。可以从美术史的角度对手机摄影的审美趋势、审美心理、艺术价值做进一步的探讨;从社会学的角度探索手机摄影与艺术、社会、文化的关系;从传播学的视角讨论手机这种媒介带来的媒介礼义、图像传播的“视觉语法”;还可以从政治学和人类学的角度进一步探讨手机摄影的图像权利,研究AI人工智能技术发展对手机摄影的影响。

关键词：手机摄影研究历程文献综述

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Characteristic Mode Design of Dual-Band Reconfigurable Frequency Selective Surface

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Chinese Journal of Electronics 2022年第6期31卷 1129-1137页

作者： NING Zihao li Mengmeng DING dazhi AI Xia liU Jiaqi Department of Communication Engineering Nanjing University of Science and Technology National Key Laboratory of Science and Technology on Test Physics and Numerical Mathematics

In this paper, a characteristic mode design of dual-band reconfigurable frequency selective surface(RFSS) with transmission/reflection band is presented. Through the visualization of modal behavior, the theory of characteristic modes(TCM) is used to guide design from a physical perspective. At first, the dominant modes of two basic structures that have a major impact on reflection are clarified by observing the modal behaviors.The appropriate combination of the two structures forms an initial element with bandpass properties. Then, the positive-intrinsic-negative(PIN) diode is placed in the middle of the microstrip line and as the state shifts from ON to OFF, the dominant mode resonant frequency of the microstrip line shifts upward. Such a feature can be used to design the transmission/reflection RFSS. Experimentally, a dual-band RFSS operating at 8.8 GHz and 10.4 GHz is designed and fabricated. The measured results that agree with the full-wave simulation validate the proposed TCM-based design.

关键词： Theory of characteristic modes Reconfigurable Dual-band Frequency selective surface

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2023年度无机非金属材料学科基金项目评审工作综述

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中国科学基金 2024年第1期38卷 74-80页

作者：谭业强郭涛路大治李纪红熊攀苗鸿雁王岐东国家自然科学基金委员会工程与材料科学部北京100085 北京科技大学北京100083 山东大学济南250100 海南大学海口570228 南京理工大学南京210094

本文统计和分析了2023年度国家自然科学基金委员会工程与材料科学部无机非金属材料学科(E02)基金项目的申请、受理、评审和资助情况、二级代码分布情况及申请中存在的主要共性问题,总结了本学科加强基础研究举措及实施成效,并介绍了202... 详细信息

本文统计和分析了2023年度国家自然科学基金委员会工程与材料科学部无机非金属材料学科(E02)基金项目的申请、受理、评审和资助情况、二级代码分布情况及申请中存在的主要共性问题,总结了本学科加强基础研究举措及实施成效,并介绍了2024年学科优先资助领域、重点资助方向、申请注意事项及对未来工作的思考,旨在为广大科研人员了解该学科领域的资助现状、人才成长规律和未来发展方向提供参考。

关键词：国家自然科学基金委员会无机非金属材料学科项目评审加强基础研究举措工作思考

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