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Frontiers of Structural and Civil Engineering 2020年第2期14卷 473-486页

作者： xiao-yong WANG Department of Architectural Engineering Kangwon National UniversityChuncheon-si 24341Korea

Many studies on the mixture design of fly ash and slag ternary blended concrete have been ***,these previous studies did not consider the effects of climate change,such as acceleration in the deterioration of durability,on mixture *** study presents a procedure for the optimal mixture design of termary blended concrete considering climate change and ***,the costs of CO2 emissions and material are calculated based on the concrete mixture and unit *** cost is equal to the sum of material cost and CO2 emissions cost,and is set as the objective function of the ***,strength,slump,carbonation,and chloride ingress models are used to evaluate concrete *** effect of different climate change scenarios on carbonation and chloride ingress is considered.A genetic algorithm is used to find the optimal mixture considering various ***,ilustrative examples are shown for mixture design of ternary blended *** analysis results show that for termary blended concrete exposed to an atmospheric environment,a rich mix is necessary to meet the challenge of climate change,and for termary blended concrete exposed to a marine environment,the impact of climate change on mixture design is marginal.

关键词： termary blended concrete climate change optimal mixture design carbonation chloride ingress

Long-term adaptive evolution of Shewanella oneidensis MR-1 for establishment of high concentration Cr(Ⅵ) tolerance

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Frontiers of Environmental Science & Engineering 2020年第1期14卷 65-75页

作者： yong xiao Changye xiao Feng Zhao CAS Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

Acclimation is the main method to enhance the productivity of microorganisms in environmental biotechnology,but it remains uncertain how microorganisms acquire resistance to high concentrations of pollutants during long-term *** oneidensis MR-1 was acclimated for 120 days with increasing hexavalent chromium(Cr(VI))concentrations from 10 to 190 mg/*** bacterium was able to survive from the highly toxic Cr(VI)environment due to its enhanced capability to reduce Cr(VI)and the increased cell membrane *** sequenced 19 complete genomes from 7 populations of MR-1,including the ancestral strain,the evolved strains in Cr(VI)environment on days 40,80 and 120 and their corresponding controls.A total of 27,49 and 90 single nucleotide polymorphisms were found in the Cr(VI)-evolved populations on days 40,80 and 120,*** substitutions were clustered according to gene functions,and the gene mutations related to integral components of the membrane,including efflux pumps and transporters,were the key determinants of chromate *** addition,MR-1 strengthened the detoxification of Cr(VI)through gene variations involved in adenosine triphosphate binding,electron carrier activity,signal transduction and DNA *** results provide an in-depth analysis of how Cr(VI)resistance of *** MR-1 is improved by acclimation,as well as a genetic understanding of the impact of longterm exposure of microorganisms to pollution.

关键词： Environmental biotechnology Acclimation Chromate resistance Efflux pumps Detoxification

Symbolic Computation and Construction of New Exact Travelling Wave Solutions to (3+1)-Dimensional KP Equation

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Communications in Theoretical Physics 2008年第5期49卷 1235-1240页

作者： WEN xiao-yong Department of Mathematics College of Sciences Beijing Information Science and Technology University Beijing 100192China

With the aid of symbolic computation system Maple, many exact solutions for the （3＋1）-dimensional KP equation are constructed by introducing an auxiliary equation and using its new Jacobi elliptic function solutions, where the new solutions are also constructed. When the modulus m → 1 and m →0, these solutions reduce to the corresponding solitary evolution solutions and trigonometric function solutions.

关键词： (3+1)-dimensional KP equation auxiliary equation Jacobi elliptic function exact solution

Charged black holes in the infinite derivative theory of gravity

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Communications in Theoretical Physics 2022年第1期74卷 77-83页

作者： yong xiao Longting Zhang Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province College of Physical Science and TechnologyHebei UniversityBaoding 071002China

The infinite derivative theory of gravity is a generalization of Einstein gravity with many interesting properties,but the black hole solutions in this theory are still not fully *** the paper,we concentrate on studying the charged black holes in such a *** the electromagnetic field part to the effective action,we show how the black hole solutions around the Reissner-Nordstrom metric can be solved perturbatively and *** further calculate the corresponding temperature,entropy and electrostatic potential of the black holes and verify the first law of thermodynamics.

关键词： quantum aspects of black holes black hole thermodynamics modified theories of gravity

New Families of Rational Form Variable Separation Solutions to(2+1)-Dimensional Dispersive Long Wave Equations

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Communications in Theoretical Physics 2009年第5期51卷 789-793页

作者： WEN xiao-yong Department of Mathematics College of Sciences Beijing Information Science and Technology University Beijing 100192China

With the aid of symbolic computation system Maple, some families of new rational variable separation solutions of the （2＋1）-dimensional dispersive long wave equations are constructed by means of a function transformation, improved mapping approach, and variable separation approach, among which there are rational solitary wave solutions, periodic wave solutions and rational wave solutions.

关键词： improved mapping approach variable separation method (2+1)-dimensional dispersive long wave equations symbolic computation

Copper-Catalyzed Si-H Bond Insertion Polymerization for Synthesis of Optically Active Polyesters Containing Silicon

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Chinese Journal of Chemistry 2022年第1期40卷 21-27页

作者： xiao-yong Zhai xiao-Qing Wang Bo Wu yong-Gui Zhou State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning 116023China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

The synthesis and characterization of chiral polymers with diverse structure remain a long-term challenging research ***,a copper-catalyzed enantioselective insertion of carbene into Si-H bond was applied to polycondensation,giving a new type of optically active degradable polyesters containing Si-C bond in the main *** polymerization features mild condition,broad substrate scope,excellent yields and *** diols could be obtained via reduction of optically active *** analysis indicated these chiral polyesters exhibit good thermal stability.

关键词： Polymerization Insertion Asymmetric catalysis Optically active polyesters Copper

SIMULATION OF THE TWO PHASE FLOW OF DROPLET IMPINGEMENT ON LIQUID FILM BY THE LATTICE BOLTZMANN METHOD

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Journal of Hydrodynamics 2012年第2期24卷 292-297页

作者： GUO Jia-hong WANG xiao-yong Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Institute of Applied Mathematics andMechanicsShanghai UniversityShanghai 200072China

A Lattice Boltzmann Method （LBM） with two-distribution functions is employed for simulating the two-phase flow induced by a liquid droplet impinging onto the film of the same liquid on solid *** model is suitable for solution of twophase flow problem at high density and viscosity ratios of liquid to vapor and phase transition between liquid and its *** roles of the vapor flow,the density ratio of liquid to vapor and the surface tension of the droplet in the splashing formation are *** is concluded that the vapour flow induced by the droplet fall and splash in the whole impinging process may affect remarkably the splash *** the case of large density ratio of liquid to vapor a crown may engender after the droplet collides with the ***,for the case of small density ratio of liquid to vapor a ＂bell＂ like splash may be observed.

关键词： droplet impact film two-phase flow Lattice Boltzmann Method (LBM) numerical simulation

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喷印金属微滴撞击粗糙表面的分子动力学模拟

原子与分子物理学报 2025年第4期42卷 73-80页

作者：苏仁健陈小勇游自浩桂林电子科技大学机电工程学院桂林541004 广西制造系统与先进制造技术重点实验室桂林541004

研究金属微滴撞击固体表面的行为对预测微滴形态和实现高精度的喷印制造具有重要的意义.然而,由于微纳尺度下金属微滴撞击实验的难以开展,目前涉及金属微滴撞击粗糙表面的形态变化和热毛细效应机理尚不清楚.本文采用分子动力学模拟研究... 详细信息

研究金属微滴撞击固体表面的行为对预测微滴形态和实现高精度的喷印制造具有重要的意义.然而,由于微纳尺度下金属微滴撞击实验的难以开展,目前涉及金属微滴撞击粗糙表面的形态变化和热毛细效应机理尚不清楚.本文采用分子动力学模拟研究了镓铟微滴撞击粗糙表面的动态行为,定量分析了撞击速度、粗糙结构和不同温度对微滴撞击行为的影响.结果表明:随着撞击速度的提高,微滴先后呈现沉积、弹跳和破碎飞溅三种模式,且微滴的最大铺展因子与韦伯数呈幂函数关系.此外,通过修饰基底粗糙结构发现,结构间距或高度的变化对微滴的弹跳行为存在不同的影响机制,可以有效促使或抑制微滴的弹跳行为.最后,分析得出随着温度的提高,微滴的铺展直径会变大,产生的黏性耗散也会增大.研究结果对金属微滴撞击行为的有效预测提供了理论基础.

关键词：金属微滴撞击粗糙基底分子动力学

A Thermo-Tunable Metamaterial as an Actively Controlled Broadband Absorber

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Engineering 2023年第1期20卷 143-152页

作者： xiao-Chang Xing Yang Cao xiao-yong Tian Lingling Wu State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049China

Metamaterials have attracted increasing attention in recent years due to their powerful abilities in manipulating electromagnetic (EM) waves. However, most previously reported metamaterials are unable to actively control full-band EM waves. In this paper, we propose a thermo-tunable broadband metamaterial (T-TBM) using paraffin-based composites (PD-Cs) with different phase transition temperatures. Active control of the T-TBM reflection loss peaks from low to high frequency is realized by manipulating the solid–liquid state of the PD-Cs at different phase transition temperatures. The absorption peak bandwidth (where the reflection loss value is less than −30 dB) can be changed, while the broad bandwidth absorption (where the reflection loss value is less than −10 dB) is satisfied by adjusting the temperature of the T-TBM. It is shown that the stagnation of the phase transition temperature of the PD-Cs in the T-TBM provides a time window for actively controlling the EM wave absorption response under different thermal conditions. The device has a broad application prospect in the fields of EM absorption, intelligent metamaterials, multifunctional structural devices, and more.

关键词： Metamaterials Active control Thermally tunable Br oadband absorption

Simulation Investigation on Optical and Electrical Properties of Carbon Nanotube in Terahertz Region

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Communications in Theoretical Physics 2009年第1期51卷 161-164页

作者： HE xiao-yong FU xiao-Nan School of Science Henan University of Technology Zhengzhou 450001 China

Under the framework of Maxwell-Garnett （M-G） model, the optical and electrical properties of singlewalled carbon naotube （SWCNT）, double-walled carbon nanotube （DWCNT） and hydrogen-doped carbon nanotube （H-doped GNT） in terahertz （THz） region have been investigated. It has been found that as frequency increases the loss tangent and conductivity show a peak. The loss tangent and conductivity of SWCNT is larger than that of DWCNT and H-doped CNT. The loss tangent and conductivity increase with the increases of filling factor and the decreases of geometrical factor.

关键词： terahertz nanotube Maxwell- Garnett model