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Resistance of Cement-based Grouting Materials with Nano-SiO2 Emulsion to Chloride Ion Penetration

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 114-119页

作者：黎水平 CHENG Jian WEI Chao yuan bin YU Chengxiao College of Architectural Science and Engineering Yangzhou University

The chloride penetration resistance of cement-based grout materials was improved by nano-silica *** of mixtures containing different nano-silica particles or emulsions were exposed in sodium chloride solutions of specific concentrations with different test *** properties of the mixes were assessed in terms of weight loss and compressive strength.X-ray diffraction （XRD） and scanning electron microscopy （SEM） of mixes were performed to analysis the phase evolution and *** results demonstrated that the introduction of nano-SiO2emulsion significantly decreased the compressive strength loss and calcium hydroxide （CH） crystal content of hydration production,and then enhanced the resistance of cement-based grouting materials to chloride ion *** improvement derives from the filling and pozzolanic effects of nano-SiO2particles,which were incorporated via an emulsion and attributed to a well dispersion in grouting matrix.

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Flexible One-Dimensional Nanostructures:A Review

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Journal of Materials Science & Technology 2015年第6期31卷 607-615页

作者： bin yuan Ludovico Cademartiri Department of Chemical & Biological Engineering Iowa State University of Science and Technology Department of Materials Science & Engineering Iowa State University of Science and Technology Ames Laboratory U.S. Department of Energy

This review discusses the recent reports on one-dimensional(1D) nanostructures with unusual *** discuss the importance that flexibility could have in future applications of nanowires and other nanostructures,and detail the two main approaches that have been followed to this day to synthesize highly flexible 1D *** approach is based on making crystals in which one or two dimensions of the structure are comparable in size with the unit *** thinness has been shown to provide unusual *** other approach conjoins hard nanostructures with flexible joints.

关键词： Flexibility One dimension Nanostructures Methodolo

ECCM schemes in netted radar system based ontemporal pulse diversity

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Journal of Systems Engineering and Electronics 2016年第5期27卷 1001-1009页

作者： ahmed abdalla zhao yuan bin tang School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 611731 China

For a netted radar system to counteract the deceptionelectronic countermeasure （ECM） signals, an effective electroniccounter countermeasure （ECCM） approach is proposed. The proposedapproach is realized based on the new signaling strategyfor the temporal pulse diversity, which makes use of transmittingpulses at each pulse repetition interval （PRI） with specific transmissionpulse block, and then following proper processing andinformation fusion. The existence of the deceptive ECM signal isconfirmed by one station, while the other stations in the nettedradar with same parameters applied the pulse diversity ***, this method ensured that, pulse diversity can be appliedin netted radar. The performance assessment shows that theproposed solutions are effective in presence of ECM signals. Thisalgorithm has been demonstrated by simulations. The presentedsimulation results are in excellent consensus with theoretical predictions.

关键词： pulse diversity electronic counter countermeasure(ECCM) digital radio frequency memory (DRFM) electronic countermeasure(ECM) netted radar matching filter.

A Lightweight Network with Dual Encoder and Cross Feature Fusion for Cement Pavement Crack Detection

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 255-273页

作者： Zhong Qu Guoqing Mu bin yuan School of Computer Science and Technology Chongqing University of Posts and TelecommunicationsChongqing400065China School of Software Engineering Chongqing University of Posts and TelecommunicationsChongqing400065China

Automatic crack detection of cement pavement chiefly benefits from the rapid development of deep learning,with convolutional neural networks(CNN)playing an important role in this ***,as the performance of crack detection in cement pavement improves,the depth and width of the network structure are significantly increased,which necessitates more computing power and storage *** limitation hampers the practical implementation of crack detection models on various platforms,particularly portable devices like small mobile *** solve these problems,we propose a dual-encoder-based network architecture that focuses on extracting more comprehensive fracture feature information and combines cross-fusion modules and coordinated attention mechanisms formore efficient feature ***,we use small channel convolution to construct shallow feature extractionmodule(SFEM)to extract low-level feature information of cracks in cement pavement images,in order to obtainmore information about cracks in the shallowfeatures of *** addition,we construct large kernel atrous convolution(LKAC)to enhance crack information,which incorporates coordination attention mechanism for non-crack information filtering,and large kernel atrous convolution with different cores,using different receptive fields to extract more detailed edge and context ***,the three-stage feature map outputs from the shallow feature extraction module is cross-fused with the two-stage feature map outputs from the large kernel atrous convolution module,and the shallow feature and detailed edge feature are fully fused to obtain the final crack prediction *** evaluate our method on three public crack datasets:DeepCrack,CFD,and *** results on theDeepCrack dataset demonstrate the effectiveness of our proposed method compared to state-of-the-art crack detection methods,which achieves Precision(P)87.2%,Recall(R)87.7%,and F-score(F1)87.4%.Thanks to our lightweight cr

关键词： Shallow feature extraction module large kernel atrous convolution dual encoder lightweight network crack detection

Nmnoparticle-mediated double-stranded RNA delivery system: A promising approach for sustainable pest management

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Insect Science 2021年第1期28卷 21-34页

作者： Shuo Yan bin-yuan Ren Jie Shen Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management College of Plant ProtectionChina Agricultural UniversityBeijingChina National Agricultural Technology Extension and Service Center BeijingChina

RNA interference(RNAi)targeting lethal genes in insects has great potential for sustainable crop *** with traditional double-stranded(ds)RNA delivery systems,nanoparticles such as chitosan,liposomes,and cationic dendrimers offer advantages in delivering dsRNA/small interfering(si)RNA to improve RNAi efficiency,thus promoting the development and practice of RNAi-based pest management ***,we illustrate the limitations of traditional dsRNA delivery systems,reveal the mechanism of nanoparticle-mediated RNAi,summarize the recent progress and successful applications of nanoparticle-mediated RNAi in pest management,and finally address the prospects of nanoparticle-based RNA pesticides.

关键词： dsRNA delivery nanocarrier pest control RNAi efficiency RNA pesticide

Alternating electric field actuated oscillating behavior of liquid metal and its application

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Science China(Technological Sciences) 2016年第4期59卷 597-603页

作者： YANG XiaoHu TAN SiCong yuan bin LIU Jing Beijing Key Lab of Cryo Biomedical Engineering and Key Lab of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of Sciences Department of Biomedical Engineering School of Medicine Tsinghua University

As a class of newly emerging functional material, Gallium based liquid metals have attracted increasing attentions in many fields, such as chip cooling, printed electronics and microfiuidics, etc. Particularly, the motion control of liquid metal droplet has been recently tried for its importance in microelectromechanical system （MEMS）, microfluidics and potential use in micro-machine or reconfigurable soft robot. This paper is dedicated to explore the motion behavior of liquid metal droplet under AC electric field. The quickly induced oscillation phenomena of liquid metal droplet and surrounding electrolyte solution were observed and the major factors to influence such behaviors are theoretically interpreted and experimentally investigated, including the size of the liquid metal droplet, electrode voltage, electrolyte solution concentration and AC signal frequency etc. Moreover, some typical features to distinguish AC filed actuation with DC field are observed, such as intensive fluid waving induced by the resonance stimulation, and the efficient inhibition of solution electrolysis. Finally, two important applications of adopting AC induced surface oscillation of liquid metal droplet to develop solution mixer as well as fluidic pump were demonstrated which successfully avoid gas generation inside electrolyte environment. The bulk oscillation effects of liquid metal as clarified here could be very useful in a variety of areas such as solution disturbance and mixing, and fluid oscillator or pump etc.

关键词： liquid metal motion control AC actuation fluid oscillation and waving resonance effect fluidic pump solution mixer

Design and simulation of digital channelized receivers in fractional Fourier domain

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Journal of Systems Engineering and Electronics 2013年第1期24卷 36-43页

作者： Pengfei Tang bin yuan Qinglong Bao Zengping Chen ATR Key Lab School of Electronic Science and EngineeringNational University of Defense Technology

An approach is proposed to realize a digital channelized receiver in the fractional Fourier domain （FRFD） for signal intercept applications. The presented architecture can be considered as a generalization of that in the traditional Fourier domain. Since the linear frequency modulation （LFM） signal has a good energy concentration in the FRFD, by choosing an appropriate fractional Fourier transform （FRFT） order, the presented architecture can concentrate the broadband LFM signal into only one sub-channel and that will prevent it from crossing several sub-channels. Thus the performance of the signal detection and parameter estimation after the sub-channel output will be improved significantly. The computational complexity is reduced enormously due to the implementation of the polyphase filter bank decomposition, thus the proposed architecture can be realized as efficiently as in the Fourier domain. The related simulation results are presented to verify the validity of the theories and methods involved in this paper.

关键词： digital channelized receiver fractional Fourier domain(FRFD) convolution theorem sampling theorem.

Influence of Rare Earth on Carbide in Weld Metal

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Journal of Iron and Steel Research International 2003年第3期10卷 67-70页

作者： ZHANG yuan-bin REN Deng-Yi Shandong University

The physical characteristics of Ni based superalloy powder with different particle sizes produced by plasma rotation electrode process (PREP) and the microstructure and mechanical properties of P/M superalloy products were investigated. The experimental results show that the optimum powder particle sizes should be in the range of 50-100 μm or 50-150 μm, which can reduce production cost, simplify process and guarantee P/M product quality.

关键词： powder particle distribution P/M superalloy microstructure property

Development of student simulated patient training and evaluation indicators in a high-fidelity nursing simulation:a Delphi consensus study

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Frontiers of Nursing 2021年第1期8卷 23-31页

作者： Hao-bin yuan School of health sciences and sports Macao Polytechnic InstituteMacao 999078China

Objective:This study is aimed to develop student simulated patient(SSP)training content and evaluation indicators,and further explores their validity and ***:Delphi consultations with 20 nursing exper ts were *** weights of indicators were calculated through the analytic hierarchy *** training was conducted with a high-fidelity nursing ***:The expert positive coefficients were 0.952 in the first round consultation and 1.00 in the second round *** expert authority coefficient was reported as *** training included role and responsibility of simulated patient(SP),script interpretation,plot performance,and training for a rater,with a total of 17 *** evaluation consisted of disease knowledge,role portrayal,and performance fidelity and since being a rater,it consists of 20 indicators in *** coordination coefficients of two rounds of consultation ranged from 0.530 to *** content validity of SSP evaluation indicators was *** inter-rater reliability was repor ted as 0.866,and the internal consistency established using Cronbach’sαwas ***:Students as SPs should have first-hand knowledge and experience within the simulated *** training content and evaluation indicators were determined through the Delphi consensus combined with analytic hierarchy *** evaluation indicators were valid and reliable,and provided the objective and quantifiable measurements for SSP training in nursing。

关键词： student simulated patient high-fidelity simulation Delphi method nursing training