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Nonvolatile electrical control of spin polarization in the 2D bipolar magnetic semiconductor VSeF

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npj Computational Materials 2023年第1期9卷 1838-1847页

作者： yuhui li Jun Deng Yan-Fang Zhang Xin Jin Wen-Han Dong Jia-Tao Sun Jinbo Pan Shixuan Du Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences100190 BeijingChina University of Chinese Academy of Sciences Chinese Academy of Sciences100190 BeijingChina School of Integrated Circuits and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of Technology100081 BeijingChina Songshan Lake Materials Laboratory 523808 DongguanChina CAS Center for Excellence in Topological Quantum Computation 100190 BeijingChina

Nonvolatile electrical control of spin polarization in two-dimensional(2D)magnetic semiconductors is greatly appealing toward future low-dissipation spintronic ***,we report a 2D material VSeF,which is an intrinsic bipolar magnetic semiconductor(BMS)featured with opposite spin-polarized valence and conduction band *** then propose a general nonvolatile strategy to manipulate both spin-polarized orientations in BMS materials by introducing a ferroelectric gate with proper band *** spin-up/spin-down polarization of VSeF is successfully controlled by the electric dipole of ferroelectric bilayer Al_(2)Se_(3),verifying the feasibility of the design *** interfacial doping effect from ferroelectric gate also plays a role in enhancing the Curie temperature of the VSeF *** types of spin field effect transistors,namely multiferroic memory and spin filter,are further achieved in VSeF/Al_(2)Se_(3) and VSeF/Al_(2)Se_(3)/Al_(2)Se_(3) multiferroic heterostructures,*** work will stimulate the application of 2D BMS materials in future spintronic nanodevices.

关键词： ferroelectric volatile magnetic

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复杂双曲壳体预应力施工技术研究

建筑施工 2024年第10期46卷 1706-1711,1720页

作者：季清李昱辉程传张鹏宋晶彭磊上海建工集团股份有限公司上海200080

预应力混凝土结构由于其抗裂性能高,充分利用了混凝土材料的抗压性,被广泛应用于大跨度、大空间的梁板结构体系中。以上海在水一方新建工程为例,对复杂双曲壳体混凝土结构的预应力施工进行研究,详细分析了双曲壳体混凝土结构板中预应力... 详细信息

预应力混凝土结构由于其抗裂性能高,充分利用了混凝土材料的抗压性,被广泛应用于大跨度、大空间的梁板结构体系中。以上海在水一方新建工程为例,对复杂双曲壳体混凝土结构的预应力施工进行研究,详细分析了双曲壳体混凝土结构板中预应力分布的特点及施工难点,并根据壳面分区提出了“先长束、后短束”的基本原则,以及单根预应力筋的张拉流程及其质量控制要点,保证了施工的顺利完成,可为今后类似工程提供借鉴。

关键词：双曲壳体预应力筋张拉施工技术

Nuclear Mechanotransduction under Geometric Constraint

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医用生物力学 2019年第A1期34卷 133-134页

作者： Yuan Hong yuhui li Shaobao liu Genin MGuy Feng Xu The Key Laboratory of Biomedical Information Engineering of Ministry of Education Xi’an Jiaotong University School of Life Science and TechnologyXi’an710049China Bioinspired Engineering and Biomechanics Center(BEBC) Xi’anJiaotong UniversityXi’an710049China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and AstronauticsNanjing210016China Department of Mechanical Engineering and Materials Science Washington University in St.LouisSt.LouisMO63130USA NSF Science and TechnologyCenter for Engineering Mechanobiology Washington University in St.LouisSt.LouisMO63130USA

Cells in vivo reside within a complex microenvironment that is rich in biological,chemical and mechanical cues,playing critical roles in regulating cellular activities(e.g.,proliferation,migration,differentiation)both spatially and *** it is well accepted that biochemical cues can significantly influence cell functions,accumulating evidence has also shown that mechanical feedback from the cell microenvironment(e.g.,stiffness of ECM,morphology,and tension force)also plays an important role in controlling cell *** of the mechanical microenvironment is associated with a series of diseases,such as cancer migration and tissue ***,there is a pressing need to understand how cells transduce these mechanobiological *** cell cytoskeleton is linked to both the nuclear lamina via liNC complexes and to focal *** enables the intriguing possibility that forces directly transduced by the nucleus might in fact affect gene *** force transmitted to nucleus and associated alterations to the special organization of genome inside the nucleus modulate gene expression programmes and change cell behaviors? This kind of putative mechanotransduction dominated by the nucleus is termed as nuclear *** shows that isolated nuclei regulate their stiffness to in response to force applied on nesprin with integrated nuclear lamina and emerin *** example is that the force applied on integrins in focal adhesions can be transmitted through actin filaments to the liNC complex and then stretch the chromatin directly through lamina-chromatin ***,the mechanism of nuclear mechanotransduction is still *** hypotheses have been *** first proposed mechanism is that the proteins on the nuclear lamina are phosphorylated induced by force and their special organization is changed to regulate downstream signal *** factors like YAP and calcium ions would e

关键词： Nuclear Mechanotransduction Geometric Constraint

青岛市成年人腰围与缺血性脑卒中发病风险关联的前瞻性研究

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中华流行病学杂志 2024年第2期45卷 178-184页

作者：李聿蕙刘蕾胡丹郑晓艳吕筠余灿清裴培段海平高汝钦逄增昌田小草孙点剑一青岛大学公共卫生学院流行病与卫生统计学系青岛266071 青岛市李沧区疾病预防控制中心青岛266041 北京大学公共卫生学院流行病与卫生统计学系北京100191 北京大学公众健康与重大疫情防控战略研究中心北京100191 重大疾病流行病学教育部重点实验室(北京大学) 北京100191 青岛市疾病预防控制中心青岛266033 青岛市预防医学研究院青岛266033

目的分析腰围与缺血性脑卒中发病风险的关联。方法研究对象来自中国慢性病前瞻性研究青岛项目点。利用研究对象的基线信息和随访获得的缺血性脑卒中发病事件,采用Cox比例风险回归模型和限制性立方样条图(RCS)模型分析腰围与缺血性脑卒... 详细信息

目的分析腰围与缺血性脑卒中发病风险的关联。方法研究对象来自中国慢性病前瞻性研究青岛项目点。利用研究对象的基线信息和随访获得的缺血性脑卒中发病事件,采用Cox比例风险回归模型和限制性立方样条图(RCS)模型分析腰围与缺血性脑卒中发病风险的关联。结果共纳入研究对象33355名,累计随访302008.88人年,共有缺血性脑卒中新发病例1093名。Cox比例风险回归模型分析结果显示,与腰围正常组(男性<85.0 cm/女性<80.0 cm)相比,腰围超标组(男性≥85.0 cm/女性≥80.0 cm)发生缺血性脑卒中的风险升高了78%[风险比(HR)=1.78,95%CI:1.51~2.10],在男性和女性中分别升高了72%(HR=1.72,95%CI:1.40~2.12)和83%(HR=1.83,95%CI:1.40~2.39)。RCS模型分析显示,腰围与缺血性脑卒中发病风险呈非线性的“S”形剂量-反应关系。结论缺血性脑卒中发病风险随着腰围的增加而增加,维持正常腰围对于预防缺血性脑卒中具有重要意义。

关键词：缺血性脑卒中腰围前瞻性研究

The Myth of a High Savings Rate

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Beijing Review 2009年第51期52卷 36-37页

作者： li yuhui

In an attempt to entice consumers to save less and spend more, China has focused on perfecting its social security system, reforming taxation and dividend-sharing proportion between the government and state-owned enterprises. liu yuhui, Director of the China Economy Appraisal and Rating Center at the Institute of Finance and Banking, the Chinese Academy of Social Sciences, offered his insights in an Economic Observer article. Edited excerpts

关键词： The Myth of a High Savings Rate

Magnetic yolk-shell structured anatase-based microspheres loaded with Au nanoparticles for heterogeneous catalysis

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Nano Research 2015年第1期8卷 238-245页

作者： Chun Wang Junchen Chen Xinran Zhou Wei li Yong liu Qin Yue Zhaoteng Xue yuhui li Ahmed A. Elzatahry Yonghui Deng Dongyuan Zhao Department of Chemistry Laboratory of Advanced Materials State Key Laboratory of Molecular Engineering of Polymers and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China Department of Chemistry College of Science King Saud University Riyadh 11451 SaudiArabia Polymer Materials Research Department Advanced Technology and New Materials Research Institute City for Scientific Research and Technology Applications New Borg El-Arab City Alexandria 21934 Egypt

Magnetic yolk-shell structured anatase-based microspheres were fabricated through successive and facile sol-gel coating on magnetite particles, followed by annealing treatments. Upon loading with gold nanoparticles, the obtained functional magnetic microspheres as heterogeneous catalysts showed superior performance in catalyzing the epoxidation of styrene with extraordinary high conversion （89.5%） and selectivity （90.8%） towards styrene oxide. It is believed that the construction process of these fascinating materials features many implications for creating other functional nanocomposites.

关键词： magnetic microspheres titania yolk-shell structure gold nanoparticles heterogeneous catalysis

Neutrophil peptide 1 accelerates the clearance of degenerative axons during Wallerian degeneration by activating macrophages after peripheral nerve crush injury

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Neural Regeneration Research 2024年第8期19卷 1822-1827页

作者： yuhui Kou Yusong Yuan Qicheng li Wenyong Xie Hailin Xu Na Han Department of Trauma and Orthopedics Peking University People’s HospitalBeijingChina National Center for Trauma Medicine BeijingChina Key Laboratory of Trauma and Neural Regeneration(Peking University) Ministry of EducationBeijingChina Department of Orthopedics China-Japan Friendship HospitalBeijingChina Department of Central Laboratory and Institute of Clinical Molecular Biology Peking University People’s HospitalBeijingChina

Macrophages play an important role in peripheral nerve regeneration,but the specific mechanism of regeneration is still *** preliminary findings indicated that neutrophil peptide 1 is an innate immune peptide closely involved in peripheral nerve ***,the mechanism by which neutrophil peptide 1 enhances nerve regeneration remains *** study was designed to investigate the relationship between neutrophil peptide 1 and macrophages in vivo and in vitro in peripheral nerve crush *** functions of RAW 264.7 cells we re elucidated by Cell Counting Kit-8 assay,flow cytometry,migration assays,phagocytosis assays,immunohistochemistry and enzyme-linked immunosorbent *** debris phagocytosis was observed using the CUBIC(Clear,Unobstructed Brain/Body Imaging Cocktails and Computational analysis)optical clearing technique during Wallerian *** inflammatory factor expression in different polarization states was detected using a protein *** results showed that neutrophil peptide 1 promoted the prolife ration,migration and phagocytosis of macrophages,and CD206 expression on the surfa ce of macrophages,indicating M2 *** axonal debris clearance rate during Wallerian degeneration was enhanced after neutrophil peptide 1 *** peptide 1 also downregulated inflammatory factors interleukin-1α,-6,-12,and tumor necrosis factor-αin invo and in ***,the results suggest that neutrophil peptide 1 activates macrophages and accelerates Wallerian degeneration,which may be one mechanism by which neutrophil peptide 1 enhances peripheral nerve regeneration.

关键词： axonal debris inflammatory factors macrophages neutrophil peptide 1 peripheral nerve injury peripheral nerve regeneration RAW 264.7 cells sciatic nerve Wallerian degeneration

A Review of Rural Policy-favored Petty Loan Forest Property Certificate Mortgage

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Asian Agricultural Research 2014年第8期6卷 8-11,17页

作者： li ZHOU yuhui li School of Economics and Management Beijing Forestry University School of Agricultural and Rural Development Renmin University of China

Studying petty loan forestry property mortgage mode has significant practical meaning in fund-raising and income-increasing in the forest- agriculture industry,restructuring and expanding the industry as well as setting up scientific industrial public policies. On the basis of literature analysis and field research data,this paper will classify and analyze research papers studying in forestry,property mortgage,and therefore draws conclusions on relevant concepts of petty loan forestry property mortgage,economics and property rights theory as well. At present,the studies of petty loan forestry property mortgage are more practical that are lack of an overall theoretical framework. Considering China's real situation of petty loan forestry property mortgage mode,we have investigated some foreign cases in operating forestry property mortgage systemically and some challenges and difficulties confronted by stakeholders in real cases. Therefore,we put forward that in the current period the fund-raising in forestry industry should focus on establishing and improving an overall rural petty loan forestry property mortgage mode.

关键词： Forest Property certificate Small Loan Mortgage Fu

Controllable synthesis of highly crystallized mesoporous TiO2/WO3 heterojunctions for acetone gas sensing

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Chinese Chemical Letters 2020年第5期31卷 1119-1123页

作者： Changyao Wang yuhui li Pengpeng Qiu linlin Duan Wei Bi Yan Chen Dingyi Guo Yupu liu Wei Luo Yonghui Deng Laboratory of Advanced Materials Department of ChemistryShanghai Key Lab of Molecular Catalysis and Innovative MaterialsiChEM and State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityShanghai 201620China Department of Stomatology Zhongshan HospitalFudan UniversityShanghai 200032China

Mesoporous semiconducting metal oxides(SMOs)heterojunctions are appealing sensors for gas ***,due to the different hydrolysis and condensation mechanism of every metal precursor and the contradiction between high crystallinity and high surface area,the synthesis of mesoporous SMOs heterojunctions with highly o rdered mesostructures,highly crystallized frameworks,and high surface area remains a huge *** this work,we develop a novel"acid-base pair"adjusted solvent evaporation induced self-assembly(EISA)strategy to prepare highly crystallized ordered mesoporous TiO2/WO3(OM-TiO2/WO3)*** WCl6 and titanium isopropoxide(TIPO)are used as the precursors,respectively,which function as the"acid-base pair",enabling the coassembly with the structure directing agent(PEO-b-PS)into highly ordered meso *** addition,PEO-b-PS can be converted to rigid carbon which can protect the meso structures from collapse during the crystallization *** resultant OM-TiO2/WO3 heterojunctions possess primitive cubic mesostructures,large pore size(~21.1 nm),highly crystalline frameworks and surface area(~98 m2/g).As a sensor for acetone,the obtained OM-TiO2/WO3 show excellent re sponse/recovery perfo rmance(3 s/5 s),good linear dependence,repeatability,selectivity,and long-term stability(35 days).

关键词： Mesoporous materials Acetone gas sensing Heterojunctions TiO2 WO3