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Advanced Functional Electromagnetic Shielding Materials:A Review Based on Micro‑Nano Structure Interface Control of Biomass Cell Walls

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Nano-Micro Letters 2025年第1期17卷 98-134页

作者： Yang Shi Mingjun Wu Shengbo Ge Jianzhang Li Anoud Saud Alshammari Jing Luo Mohammed A.Amin hua qiu Jinxuan Jiang Yazeed M.Asiri Runzhou huang hua Hou Zeinhom M.El‑Bahy Zhanhu Guo Chong Jia Kaimeng Xu Xiangmeng Chen Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037People’s Republic of China State Key Laboratory of Efficient Production of Forest Resourced Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083People’s Republic of China Department of Physics Faculty of Sciences‑ArarNorthern Border UniversityArar 91431Saudi Arabia Department of Chemistry College of ScienceTaif UniversityP.O.Box 1109921944 TaifSaudi Arabia Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon Tyne NE18STUK College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr CityCairo 11884Egypt Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products International Joint Research Center for Biomass MaterialsSouthwest Forestry UniversityKunming 650224People’s Republic of China School of Science Henan Agricultural UniversityZhengzhou 450002People’s Republic of China

Research efforts on electromagnetic interference(EMI)shielding materials have begun to converge on green and sustainable biomass *** materials offer numerous advantages such as being lightweight,porous,and *** to their porous nature,interfacial compatibility,and electrical conductivity,biomass materials hold significant potential as EMI shielding *** concerted efforts on the EMI shielding of biomass materials have been reported,this research area is still relatively new compared to traditional EMI shielding *** particular,a more comprehensive study and summary of the factors influencing biomass EMI shielding materials including the pore structure adjustment,preparation process,and micro-control would be *** preparation methods and characteristics of wood,bamboo,cellulose and lignin in EMI shielding field are critically discussed in this paper,and similar biomass EMI materials are summarized and *** composite methods and fillers of various biomass materials were *** paper also highlights the mechanism of EMI shielding as well as existing prospects and challenges for development trends in this field.

关键词： Biomass materials Electromagnetic interference shielding Micro-nano structure interface control Conductivity

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Academician Qi-Yi Xing(Chi-Yi Hsing):pioneer organic chemist of synthetic insulin

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Protein & Cell 2022年第9期13卷 627-630页

作者： Ming-hua qiu State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of ScienceKunming650201China

Qi-Yi Xing(Chi-Yi Hsing,November 24th,1911–November 4th,2002)(Fig.1)was one of the remarkable scientist and educators in *** was a pioneer for Chinese Organic Chemistry development,an Academician of the Chinese Academy of Sciences,and a professor at the College of Chemistry and Molecular Engineering in Peking *** was one of the leaders of the synthetic crystalline bovine insulin project in China and a person of outstanding talent in the teaching of organic *** the occasion of 110th anniversary of the establishment of the chemistry department at Peking University,it is also Professor Xing’s 110th birthday,and we pay tribute to his lifelong commitment to the development of organic chemistry,especially protein synthesis,and his teaching style.

关键词： Academician teaching pioneer

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Analysis of the penalty version of the Arlequin framework for the prediction of structural responses with large deformations

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第7期12卷 552-560页

作者： hua QIAO Wei-qiu CHEN Department of Engineering Mechanics Zhejiang University Hangzhou 310027 China

The Arlequin framework proposed by Ben Dhia in 1998 is a flexible and robust method for conducting global/local analysis of structures and materials.A penalty version of the Arlequin framework for the study of structural problems involving large deformation is considered *** implementation of the penalty-based Arlequin framework into ABAQUS is then explored and the corresponding Arlequin user element subroutine is *** nonlinear simulations of a cantilever beam and a shallow arch are conducted and the choice of the coupling operator with an appropriate penalty parameter is *** numerical results justify the feasibility of the proposed method,ensuring its further application to more complicated problems involving geometric or material nonlinearities.

关键词： Global/Local analysis Geometric nonlinear analysis Penalty-based Arlequin method User defined element

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A theoretical and 1-D numerical investigation on a valve/valveless air-breathing pulse detonation engine

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Chinese Journal of Aeronautics 2021年第1期34卷 68-78页

作者： hua qiu Cha XIONG Jianling LI School of Power and Energy Northwestern Polytechnical UniversityXi'an 710072China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

The important operating characteristics of pulsed Pressure Gain Combustion(PGC)propulsion are the pressure gain of the combustor component and the propulsive performance gain of the engine.A ramjet-type valve/valveless air-breathing pulsed detonation engine with a supersonic internal compression inlet is *** on an ideal thermal cycle,the ideal equivalent pressure ratios(pcb)of the Pulsed Detonation Combustor(PDC)are obtained theoretically which are directly related with the propulsive performance of the *** introducing an orifice loss model into the cycles,the critical pressure drop ratios through the orifice for the PDC achieving pressure gain and the engine achieving thrust gain are *** influencing factors are investigated by the use of a one-dimensional(1-D)numerical simulation *** operating characteristics of the pulse detonation engine are investigated with changes of the valve type,the inlet/outlet area ratio of the PDC,the nozzle area ratio,and flight *** these factors can affect pcbof the PDC,and pcbcan be optimized by changing the geometry of the *** most important influence parameter is the valve *** using an orifice-type aerodynamic valve,simulation results show that the PDC cannot achieve the pressure gain *** a supersonic internal compression inlet is introduced to the engine,whether the Pulse Detonation Engine(PDE)can achieve thrust gain comparable with that of an ideal Brayton cycle engine not only is related to the pressure gain of the combustor,but also needs to optimize the engine structure to reduce the total pressure loss.

关键词： Detonation Pressure gain characteristics Propulsive performance Supersonic internal compression inlet Valve/valveless Thermal cycle

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Distributional Dimension of Fractal Sets in Local Fields

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Acta Mathematica Sinica,English Series 2008年第1期24卷 147-158页

作者： hua qiu Wei Yi SU Department of Mathematics Nanjing University Nanjing 210093 P. R. China

The distributional dimension of fractal sets in R^n has been systematically studied by Triebel by virtue of the theory of function spaces. In this paper, we first discuss some important properties about the B-type spaces and the F-type spaces on local fields, then we give the definition of the distributional dimension dimD in local fields and study the relations between distributional dimension and Hausdorff dimension. Moreover, the analysis expression of the Hausdorff dimension is given. Lastly, we define the Fourier dimension in local fields, and obtain the relations among all the three dimensions. Keywords local field, B-type space, F-type space, distributional dimension, Hausdorff dimension Fourier dimension

关键词： local field B-type space F-type space distributional dimension Hausdorff dimension,Fourier dimension

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Template-directed fabrication of 3D graphene-based composite and their electrochemical energy-related applications

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Science Bulletin 2016年第6期61卷 443-450页

作者： hua-Jun qiu Li Liu Yu Wang The State Key Laboratory of Mechanical Transmissions School of Chemistry and Chemical Engineering Chongqing University

Graphene shows great potentials in electrochemical energy-related *** enhance its properties and corresponding electrochemical performance,recently,three-dimensional(3D)graphene-based materials especially monolithic porous graphene with encapsulated functional nanomaterials have arisen much research interest for electrochemical catalysis,lithium ion batteries(LIBs),lithium–sulfur batteries,supercapacitors,*** the enhanced structure properties such as interconnected graphene network,high volume-specific surface area and electronic conductivity,3D monolithic graphene is more suitable for the fabrication of composite electrode materials in real *** this article,we discuss recent development in fabricating monolithic 3D graphene and their composites using template-directed methods and their applications in electrochemical energy-related areas.

关键词： Nanoporous graphene Templatedirected synthesis Composite Electrocatalysis Lithium ion batteries

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Global Cauchy Problem for a Leray-α Model

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Acta Mathematicae Applicatae Sinica 2017年第1期33卷 207-220页

作者： hua qiu Yi DU Zheng-an YAO Department of Applied Mathematics South China Agricultural University Guangzhou 510642China Department of Mathematics Jinan University Guangzhou 510632 China E-mail: School of Mathematics Sun Yat-Sen University Guangzhou 510275 China

In this paper, we consider the Cauchy problem for the 3D Leray-α model, introduced by Cheskidov et al.[11]. We obtain the global solution for the 3D Leray-α model in the fractional index Sobolev space, and prove that the 3D Leray-α model reduces to the homogeneous incompressible Navier-Stokes equations as α↓0＋, and the solution of the 3D Leray-α model will converge to the weak solution of the corresponding Navier-Stokes equations.

关键词： Leray-α model Cauchy problem Littlewood-Paley decomposition global well-posedness

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Phase Field Modelling Allotropic Transformation of Solid Solution

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Computers, Materials & Continua 2020年第3期62卷 1289-1302页

作者： Yaochan Zhu hua qiu Hakan Hallberg Xi’an Aeronautical Polytechnic Institute Xi’an710089China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072China Solid Mechanics Lund University22100LundSweden

Based on multiphase field conception and integrated with the idea of vector-valued phase field,a phase field model for typical allotropic transformation of solid solution is *** model takes the non-uniform distribution of grain boundaries of parent phase and crystal orientation into account in proper way,as being illustrated by the simulation of austenite to ferrite transformation in low carbon *** is found that the misorientation dependent grain boundary mobility shows strong influence on the formation of ferrite morphology comparing with the weak effect exerted by misorientation dependent grain boundary *** evolution of various types of grain boundaries are quantitatively characterized in terms of its respective grain boundary energy *** simulated ferrite fraction agrees well with the expectation from phase diagram,which verifies this model.

关键词： Phase field allotropic transformation grain boundary misorientation

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Complete and Complete Moment Convergence for Weighted Sums of Widely Orthant Dependent Random Variables

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Acta Mathematica Sinica,English Series 2014年第9期30卷 1539-1548页

作者： De hua qiu Ping Yan CHEN School of Mathematics and Statistics Guangdong University of Finance & Economics Department of Mathematics Jinan University

In this paper, we establish a complete convergence result and a complete moment convergence result for weighted sums of widely orthant dependent random variables under mild conditions. As corollaries, the corresponding results for weighted sums of extended negatively orthant dependent random variables are also obtained, which generalize and improve the related known works in the literature.

关键词： Widely orthant dependent random variables extended negatively orthant dependent random variables complete convergence complete moment convergence

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Experimental investigations on the power extraction of a turbine driven by a pulse detonation combustor

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Chinese Journal of Aeronautics 2013年第6期26卷 1353-1359页

作者： Li Xiaofeng Zheng Longxi qiu hua Chen Jingbin School of Power and Energy Northwestern Polytechnical University

In order to grasp the interaction mechanism between the pulse detonation combustor（PDC）and the turbine,the experimental work in this paper investigates the key factors on the power extraction of a turbocharger turbine driven by a PDC.A PDC consisting of an unvalved tube is integrated with a turbocharger turbine which has a nominal mass flow rate of 0.6 kg/s and50000 r/*** PDC-turbine hybrid engine is operated on gasoline-air mixtures and runs for6＋min to achieve a thermal steady state,and then the engine performance is evaluated under different operating *** show that the momentum difference per unit area between the turbine inlet and outlet plays an important role in the power extraction,while the pressure peak of the detonation has little *** equivalence ratio of fuel and air mixture and the transition structure between PDC and turbine are also important to the power extraction of the *** present work is promising as it suggests that the performance beneft of a PDC-turbine hybrid engine can be realized by increasing the momentum difference per unit area through the optimal design of transition section between the PDC and turbine.

关键词： Combustor Experiment Pulse detonation Turbine Turbocharger

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