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Memristive switching in the surface of a charge-density-wave topological semimetal

Science Bulletin 2024年第13期69卷 2042-2049页

作者： Jianwen Ma Xianghao Meng Binhua Zhang Yuxiang Wang yicheng Mou Wenting Lin Yannan Dai Luqiu Chen Haonan Wang Haoqi Wu Jiaming Gu Jiayu Wang Yuhan Du Chunsen Liu Wu Shi Zhenzhong Yang Bobo Tian Lin miao Peng Zhou Chun-Gang Duan Changsong Xu Xiang Yuan Cheng Zhang State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing Fudan UniversityShanghai 200433China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China Key Laboratory of Computational Physical Sciences(Ministry of Education) Institute of Computational Physical SciencesState Key Laboratory of Surface PhysicsDepartment of PhysicsFudan UniversityShanghai 200433China Shanghai Qi Zhi Institute Shanghai 200030China School of Physics Southeast UniversityNanjing 211189China Key Laboratory of Polar Materials and Devices(Ministry of Education) Department of ElectronicsEast China Normal UniversityShanghai 200241China Shanghai Center of Brain–inspired Intelligent Materials and Devices East China Normal UniversityShanghai 200241China State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China Frontier Institute of Chip and System Fudan UniversityShanghai 200433China Zhangjiang Fudan International Innovation Center Fudan UniversityShanghai 201210China School of Physics and Electronic Science East China Normal UniversityShanghai 200241China

Owing to the outstanding properties provided by nontrivial band topology,topological phases of matter are considered as a promising platform towards low-dissipation electronics,efficient spin-charge conversion,and topological quantum *** ferroelectricity in topological materials enables the non-volatile control of the quantum states,which could greatly facilitate topological electronic ***,ferroelectricity is generally incompatible with systems featuring metallicity due to the screening effect of free *** this study,we report the observation of memristive switching based on the ferroelectric surface state of a topological semimetal(TaSe_(4))*** find that the surface state of(TaSe_(4))2I presents out-of-plane ferroelectric polarization due to surface *** the combination of ferroelectric surface and charge-density-wave-gapped bulk states,an electric-switchable barrier height can be achieved in(TaSe_(4))2I-metal *** employing a multi-terminal-grounding design,we manage to construct a prototype ferroelectric memristor based on(TaSe_(4))2I with on/off ratio up to 103,endurance over 103 cycles,and good retention *** origin of the ferroelectric surface state is further investigated by first-principles calculations,which reveal an interplay between ferroelectricity and band *** emergence of ferroelectricity in(TaSe_(4))2I not only demonstrates it as a rare but essential case of ferroelectric topological materials,but also opens new routes towards the implementation of topological materials in functional electronic devices.

关键词： Topological semimetal Schottky barrier Surface ferroelectricity Memristor

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土石坝工程中渗流问题多软件融合计算方法及应用

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中国农村水利水电 2024年第4期 239-242,249页

作者：苗强孙旭良方业源吕超吴曼菲广西桂禹工程咨询有限公司广西南宁530023

渗流分析是土石坝设计、安全评价中的一项重要工作内容,目前国内外较成熟的专业软件如理正岩土软件渗流模块、AutoBank、GeoStudioSEEP/W模块、ANSYS软件等,侧重于渗流计算,对于多方案拟定、成果提取、报告编写及后期处理均需设计人员... 详细信息

渗流分析是土石坝设计、安全评价中的一项重要工作内容,目前国内外较成熟的专业软件如理正岩土软件渗流模块、AutoBank、GeoStudioSEEP/W模块、ANSYS软件等,侧重于渗流计算,对于多方案拟定、成果提取、报告编写及后期处理均需设计人员二次加工,导致整体工作效率不高。为解决该问题,笔者利用VBA语言结合API函数,将Excel、Word、AutoCAD和渗流软件进行融合,实现了土石坝渗流多方案自动分析计算、成果提取、报告编写于一体的功能,对土石坝多断面、多工况的渗流分析成果能够一键生成,降低了计算、制图与编写报告的门槛,实现了计算分析的标准化生产,极大地提高了效率和成果质量。

关键词： VBA语言 API函数渗流分析标准化生产多软件融合报告一键生成

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A treatment recommendation for trichoepithelioma:Thoughts on selection of treatment timing and method

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Chinese Journal of Plastic and Reconstructive Surgery 2024年第1期6卷 37-40页

作者： Shenying Luo Shuchen Gu Ruoqing Xu En Yang Liying Tu Hsin liang Xin Huang Jieyi Ren Tao Zan Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China

In this report,we present the case of a 55-year-old woman with a 30-year history of multiple familial trichoe-pithelioma(MFT),with facial surface tumors that progressively worsened,causing ventilation *** order to improve the patient’s appearance and functional impairment,we performed a two-step surgical excision and skin grafting procedure post diagnosis through genetic *** 18-month follow-up confirmed that the effect was satisfactory without obvious *** on this outcome,we have developed a diagnosis and treat-ment process for patients with MFT,aiming to provide a reference for standardized treatment of this rare disease.

关键词： Multiple familial trichoepithelioma Trichoepithelioma CYLD gene

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织物-空气层-皮肤三维结构建模及其传热模拟

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纺织学报 2024年第2期45卷 198-205页

作者：韩烨田苗蒋青昀苏云李俊东华大学服装与艺术设计学院上海200051 东华大学现代服装设计与技术教育部重点实验室上海200051 东华大学高性能纤维及制品教育部重点实验室上海201620

热防护服装是消防员面对火灾环境的重要屏障,为分析织物组织对其热防护能力的影响,构建了消防服外层阻燃织物的三维几何模型,并考虑实际着装状态建立“织物-空气层-皮肤”流固耦合传热模型。根据实验结果验证模型,并选取外界环境、织物... 详细信息

热防护服装是消防员面对火灾环境的重要屏障,为分析织物组织对其热防护能力的影响,构建了消防服外层阻燃织物的三维几何模型,并考虑实际着装状态建立“织物-空气层-皮肤”流固耦合传热模型。根据实验结果验证模型,并选取外界环境、织物组织结构及纱线导热系数进行参数研究,对比织物表面温度分布及真皮层热流密度、温度变化曲线。结果表明,该模型能较好地拟合实验结果,随着热暴露峰值温度的上升及纱线宽度的增大,纱线表面温度、真皮层热流密度、真皮层温度均上升。纱线的导热系数对真皮层温度影响较小。纱线宽度对真皮层温度的影响与热环境相关。有必要针对热暴露环境设计织物结构,在保障热防护性能的同时减小热防护服装质量,降低消防员热应激。

关键词：热传递数值模拟织物组织消防服低热辐射

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Synergistic rare-earth yttrium single atoms and copper phosphide nanoparticles for high-selectivity ammonia electrosynthesis

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Rare Metals 2024年第11期 5792-5801页

作者： yi-Meng Cai Yang-Hua Li yi Xiao Quentin Meyer Qian Sun Wan-Jing Lai Shu-Wen Zhao Jun Li Lin-Jie Zhang Han Wang Zhang Lin Jun Luo Li-Li Han School of Materials Science and Engineering Institute for New Energy Materials and Low-Carbon TechnologiesTianjin University of Technology State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences School of Chemistry The University of New South Wales School of Metallurgy and Environment Central South University Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of China

Electrochemical nitrate reduction to NH3holds a great promise for N-upcycling in nature,while its sluggish reaction kinetics involved in both the stepwise deoxygenation and hydrogenation processes necessitates the development of bespoke catalysts with multi-site ***,we report a hybrid catalyst composed of rare-earth（RE） yttrium（Y） single atoms and copper phosphide（Cu3P） nanoparticles loaded on N,P-doped carbon(YSA-Cu3P/CNP) through a chelating and pyrolysis *** to a synergistic contribution of Y single atoms and Cu3P nanoparticles,YSA-Cu3P/CNP achieves an impressive NH3Faradaic efficiency（FE） of 92% at-0.5V（***） and the highest NH3yield rate of11.4 mg·h-1·cm-2at-0.6 V（***） in an alkaline media,which surpass most of the reported *** intricate reaction pathway has been explored by online differential electrochemical mass spectrometry（DEMS）,and the synergistic effect between Y single atoms and Cu3P nanoparticles has been studied by in situ synchrotron X-ray absorption ***,density-functional theory（DFT） calculations unveil that the high-efficiency nitrate reduction on YSA-Cu3P/CNP is attributed to a reduced energy barrier of the rate-determining deoxygenation step coupled with the enhanced stabilization of active hydrogen favorable for the hydrogenation steps,thereby boosting the overall reaction *** addition,a prototype Zn-nitrate battery utilizing YSA-Cu3P/CNP as the cathode is *** work not only elucidates the mechanism behind the enhanced catalytic performance but also paves the way for the future development of highefficiency electrocatalysts through dual-site engineering.

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Isolation of Leclercia adecarboxylata Producing Carbapenemases in A Newborn Female

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生物医学与环境科学:英文版 2023年第9期36卷 874-879页

作者： MENG Shuang miao Bei Bei LI Jie yiN Jian Wen LIU Ze liang JIANG Xue Qi GONG Xin yi LI Juan Chinese Field Epidemiology Training Program Chinese Center for Disease Control and PreventionBeijing 102206China State Key Laboratory of Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Yunnan Center for Disease Control and Prevention Kunming 650034YunnanChina

Leclercia adecarboxylata is a Gram-negative bacterium belonging to the Enterobacteriaceae *** our knowledge,this is the first report of a carbapenem-resistant *** strain isolated from a healthy *** *** strain isolated in this study carried four plasmids that may serve as reservoirs for antibiotic resistance *** 2 and 4 did not harbor any antimicrobial resistance *** 3 is a novel plasmid containing three resistance *** bla IMP gene harbored in the strain was most similar to bla IMP-79 at the nucleotide level,with a similarity of 99.4%(737/741).This case highlights the importance of considering *** as a potential cause of infections in children.

关键词： Leclercia adecarboxylata Carbapenem-resistant Newborn

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Reconfigurable vertical field-effect transistor based on graphene/MoTe2/graphite heterostructure

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Science China(Information Sciences) 2020年第10期63卷 211-218页

作者： Cong WANG Chen PAN Shi-Jun liang Bin CHENG Feng miao National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing University

Reconfigurable field-effect transistors have attracted enormous attention over the past decades because of their potential in implementing logic and analog circuit functions with fewer resources of transistors compared with complementary metal-oxide-semiconductor transistors. However, the miniaturization of traditional reconfigurable transistors is still a challenge owing to their inherent planar multi-gate ***, we fabricated a dual-gate vertical transistor based on graphene/MoTe2/graphite van der Waals heterostructure and demonstrated a switchable n-type, V-shape ambipolar and p-type field-effect characteristics by varying the voltages of the top gate and drain electrodes. According to the band diagram analysis, we reveal that the reconfiguring ability of the field-effect characteristics stems from the asymmetric injection efficiency of the carriers through the gate-tunable barriers at the interfaces. Our results offer a potential approach to achieve device miniaturization of reconfigurable transistors.

关键词： reconfigurable field-effect transistor vertical transistor graphene/MoTe2 van der Waals heterostructure ambipolar transistor dual-gate transistor

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不同干密度下黄土孔隙分形特征及其对基质吸力的影响

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中国农村水利水电 2024年第4期 1-6,14页

作者：童富果李华翔薛松李苗苗三峡大学湖北省水电工程施工与管理重点实验室湖北宜昌443002 三峡大学水利与环境学院湖北宜昌443002

基于分形几何学方法建立了土体孔径分布的描述,并结合Young-Laplace理论提出了考虑孔隙分形特征的非饱和土基质吸力模型。针对陕西地区的黄土收集了不同干密度的土水特征曲线并分析了干密度对孔隙分布特征及基质吸力的影响。结果表明:... 详细信息

基于分形几何学方法建立了土体孔径分布的描述,并结合Young-Laplace理论提出了考虑孔隙分形特征的非饱和土基质吸力模型。针对陕西地区的黄土收集了不同干密度的土水特征曲线并分析了干密度对孔隙分布特征及基质吸力的影响。结果表明:黄土孔隙具有明显分形特性,可采用Menger海绵体分形模型良好描述。模型孔隙特征参数分析发现随着干密度增大,分形维数D近似线性增大,而最大孔径L呈幂函数减小;通过函数拟合,进一步建立黄土孔径分布与干密度的特征关系,进而实现了对不同干密度下的黄土基质吸力快速预测。

关键词：基质吸力黄土孔径分布分形模型干密度

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基于五运六气理论探讨常见肿瘤患者的禀赋特征与发病的关系

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广州中医药大学学报 2024年第8期41卷 1984-1993页

作者：苏振邦易良杰广州中医药大学广东广州510006 广州中医药大学惠州医院广东惠州516000

【目的】探讨个体出生当年的五运六气特征与常见肿瘤发生之间的联系,评估五运六气理论应用于现代肿瘤流行病学研究的潜力。【方法】利用SEER(Surveillance,Epidemiology,and End Results)数据库(1975~2020年)及广州中医药大学惠州医院... 详细信息

【目的】探讨个体出生当年的五运六气特征与常见肿瘤发生之间的联系,评估五运六气理论应用于现代肿瘤流行病学研究的潜力。【方法】利用SEER(Surveillance,Epidemiology,and End Results)数据库(1975~2020年)及广州中医药大学惠州医院肿瘤科近3年收治的肿瘤病例数据,将出生年份转换为五运六气的相关要素,如中运、客气、主气及运气相合等,并通过LASSO回归、单因素和多因素逻辑回归分析探讨这些要素与不同类型肿瘤发病风险之间的关系。【结果】(1)共涵盖了2215896例病例,其中来源于SEER数据库的病例为2215024例,包括男性1158019例(占52.28%),女性1057005例(占47.72%);本院病例为872例,包括男性527例(占60.44%),女性345例(占39.56%)。涉及乳腺癌、前列腺癌、肺癌、结直肠癌、胃癌和肝癌等多种类型。(2)研究发现,某些五运六气特征与特定肿瘤类型的发生存在显著相关性,如肺癌的发生与“土运不足”有关,而乳腺癌的发生则与“水运不足”的年份有关等,表明出生时的五运六气特征可能与肿瘤发病风险之间存在潜在联系。【结论】该研究的初步发现支持了五运六气理论在预测不同肿瘤发生风险中的应用前景。然而,五运六气特征与肿瘤发生之间的关系非常复杂,需要进一步的深入研究来探索其背后的机制。未来的工作可通过涵盖更大的人群样本,以及更详细的出生时间,并考虑家族遗传、地理因素和环境因素等,以验证这些观察结果,为风险预测模型的建立以及中医“治未病”理念在肿瘤预防和治疗中的实际应用提供科学依据。

关键词：五运六气禀赋特征治未病肿瘤流行病学风险预测模型 SEER数据库分析

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miR-429-3p mediates memory decline by targeting MKP-1 to reduce surface GluA1- containing AMPA receptors in a mouse model of Alzheimer’s disease

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Acta Pharmaceutica Sinica B 2024年第2期14卷 635-652页

作者： Man Luo Yayan Pang Junjie Li Lilin yi Bin Wu Qiuyun Tian Yan He Maoju Wang Lei Xia Guiqiong He Weihong Song Yehong Du Zhifang Dong Pediatric Research Institute Ministry of Education Key Laboratory of Child Development and DisordersNational Clinical Research Center for Child Health and DisordersChina International Science and Technology Cooperation Base of Child Development and Critical DisordersChongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory DisordersChildren’s Hospital of Chongqing Medical UniversityChongqing 400014China Department of Anatomy Basic Medical CollegeChongqing Medical UniversityChongqing 400016China Townsend Family Laboratories Department of PsychiatryThe University of British ColumbiaVancouver BC V6T 1Z3Canada Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)Institute of AgingKey Laboratory of Alzheimer’s Disease of Zhejiang ProvinceZhejiang Clinical Research Center for Mental DisordersSchool of Mental Health and the Affiliated Kangning HospitalWenzhou Medical UniversityWenzhou 325000China Institute for Brain Science and Disease of Chongqing Medical University Chongqing 400016China

Alzheimer ’s disease(AD) is a leading cause of dementia in the ***-activated protein kinase phosphatase 1(MKP-1) plays a neuroprotective role in ***,the molecular mechanisms underlying the effects of MKP-1 on AD have not been extensively ***(miRNAs) regulate gene expression at the post-transcriptional level,thereby repressing mRNA ***,we reported that the microRNA-429-3p(miR-429-3p) was significantly increased in the brain of APP23/PS45 AD model mice and N2AAPPAD model *** further found that miR-429-3p could downregulate MKP-1 expression by directly binding to its 3’-untranslated region(3’ UTR).Inhibition of miR-429-3p by its antagomir(A-miR-429) restored the expression of MKP-1 to a control level and consequently reduced the amyloidogenic processing of APP and Aβ *** importantly,intranasal administration of A-miR-429 successfully ameliorated the deficits of hippocampal CA1 long-term potentiation and spatial learning and memory in AD model mice by suppressing extracellular signal-regulated kinase(ERK1/2)-mediated GluAl hyperphosphorylation at Ser831 site,thereby increasing the surface expression of GluAl-containing α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors(AMPARs).Together,these results demonstrate that inhibiting miR-429-3p to upregulate MKP-1 effectively improves cognitive and synaptic functions in AD model mice,suggesting that miR-429/MKP-1 pathway may be a novel therapeutic target for AD treatment.

关键词： Alzheimer's disease MKP-1 miR-429-3p AMPAreceptor Learning and memory Long-term potentiation

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