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连续梁桥施工预拱度计算方法研究

山东交通科技 2024年第3期 58-60页

作者：马雨孙铭辉苏文明张太磊山东省公路桥梁建设集团有限公司山东济南250014 山东高速工程检测有限公司山东济南250002 桥梁结构大数据与性能诊治提升交通运输行业重点实验室山东济南250002

采用Midas Civil有限元软件进行建模分析,在悬臂挂篮浇筑施工过程中,建立施工线形控制体系,对施工预拱度进行预测,施工过程中与理论值进行比对,不断调整仿真模型,确保连续梁桥施工过程及成桥状态结构安全、几何线形符合规范要求。

关键词：连续梁桥悬臂浇筑施工控制预拱度

Synthesis and red electroluminescence of a dimesityl-functionalized bistetracene

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Chinese Chemical Letters 2018年第2期29卷 293-296页

作者： Guixia Zhai Changting Wei Shulian Chen Xiaomeng Yin Jinchong Xiao wenming su College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Printalbe Electronics Research Centre Suzhou Institute of Nanotech and Nano-bionics Chinese Academy of Sciences MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics & Nanomaterials School of Materials Science and EngineeringNanjing University of Science and Technology

A novel dimesityl-decorated bistetracene derivative 8,16-dimesityltetraceno[2,1,12,11-opqra]tetracene（DMTA） has been synthesized and characterized. Its single crystal analysis demonstrates that the parent bistetracene backbone is almost in a plane without any intermolecular 7 r-stacking interaction. DMTA exhibited the low-energy absorption at 560/607 nm and emission spectra at 617/663 nm, *** fabricated device based on DMTA doping into 2,6-bis（3-（9 H-carbazol-9-yl）phenyl）pyridine（1 %） as an emitter present a maximum brightness of 632 cd/m^2 at 14.7 V with the CIE coordinate of（0.623,0.349）.

关键词： Synthesis Polycyclic aromatic hydrocarbons Single crystal Photophysical property Electroluminescence

High-resolution and large-size stretchable electrodes based on patterned silver nanowires composites

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Nano Research 2022年第5期15卷 4590-4598页

作者： Yong Lin Qingsong Li Chen Ding Jiayi Wang Wei Yuan Zhiyuan Liu wenming su Zheng Cui Printable Electronics Research Centre Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China

Electrodes based on composites of silver nanowires(AgNWs)and elastic polymers have been widely studied and applied in various stretchable electronic ***,due to the high aspect ratio of nanowires,the patterning of AgNW-based composite electrodes remains a huge challenge,especially for high-resolution complex circuit wiring on large-size elastic *** this paper,we propose a method for preparing large-size stretchable circuit boards with high-resolution electrodes by the combination of screen printing and vacuum filtration of AgNWs/polydimethylsiloxane(PDMS)*** as-prepared stretchable electrodes have smooth edges with patterning resolution up to-50 μ*** conductivity of the composite electrode can be precisely controlled by varying deposition densities of AgNWs and have reached to 1.07 x 10^(4) S/cm when the deposition density was 2.0 mg/cm^(2).In addition,the uniformity of conductivity and the resistance-strain characteristics of composite electrodes were systematically evaluated with different AgNWs deposition *** composite electrodes have been successfully employed to construct a large-size programmable display system and an 18-channel surface electromyography(EMG)recording,showing great potentials for some strain-insensitive stretchable circuits in wearable and health-related electronic applications.

关键词： AgNWs patterning silver nanowires AgNWs/PDMS composite stretchable circuit board high-density electrode array

High performance inkjet-printed QLEDs with 18.3% EQE: improving interfacial contact by novel halogen-free binary solvent system

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Nano Research 2021年第11期14卷 4125-4131页

作者： Ming Chen Liming Xie Changting Wei Yuan-Qiu-Qiang Yi Xiaolian Chen Jian Yang Jinyong Zhuang Fushan Li wenming su Zheng Cui Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China Guangdong Juhua Printed Display Technol Company Ltd. Guangzhou510700China Institute of Optoelectronic Technology Fuzhou UniversityFuzhou350002China

Poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt(4,4′-(N-(4-butylphenyl))](TFB),one of the most popular and widely used hole-transport layer(HTL)materials,has been successfully applied in high performance spin-coated quantum dots-based light-emitting diodes(QLEDs)due to its suitable energy level and high ***,there are still many challenging issues in inkjet-printed QLED devices when using TFB as *** normally suffers from the interlayer mixing and erosion,and low surface energy against the good film ***,a novel environment-friendly binary solvent system was established for formulating quantum dot(QD)inks,which is based on mixing halogen-free alkane solvents of decalin and *** optimum volume ratio for the mixture of decalin and n-tridecane was found to be 7:3,at which a stable ink jetting flow and coffee-ring free QD films could be *** research the influence of substrate surface on the formation of inkjet-printed QD films,TFB was annealed at different temperatures,and the optimum annealing temperature was found to enable high quality inkjet-printed QD ***-printed red QLED was ultimately manufactured.A maximum 18.3%of external quantum efficiency(EQE)was achieved,reaching 93%of the spin-coated QLED,which is the best reported high efficiency inkjet-printed red QLEDs to *** addition,the inkjet-printed QLED achieved similar T75 operational lifetime(27 h)as compared to the spin-coated reference QLED(28 h)at 2,000 cd·m−*** work demonstrated that the novel orthogonal halogen-free alkane co-solvents can improve the interfacial contact and facilitate high-performance inkjet printing QLEDs with high EQE and stability.

关键词： quantum dots quantum dots light-emitting diodes(QLEDs) inkjet printing halogen-free inks contact interface

Ultra-fast and low-cost fabrication of transparent paper

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Chinese Optics Letters 2021年第12期19卷 70-74页

作者： Lulin Wei Jie Li Haohao Wang Shuhong Nie wenming su Dafang Huang Mingwei Zhu National Laboratory of Solid State Microstructures&Jiangsu Key Laboratory of Artificial Functional Materials&College of Engineering and Applied Sciences Nanjing UniversityNanjing 210093China suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences(CAS)Suzhou 215123China

Transparent paper is a kind of promising and environmentally friendly *** this study,we show that transparent paper can be fabricated in an ultra-fast and low-cost *** low-cost top-down method only takes three steps of cell separation,lignin removal,and cold pressing to obtain a high-quality transparent *** fabrication time is further reduced,and the resulted transparent paper shows high transparency up to 90.3%.The application as a substrate material for transparent and flexible electronic devices is demonstrated by emulating the printed circuit on the prepared transparent *** top-down method will greatly promote the market-oriented applications of transparent paper as an environment friendly material.

关键词： transparent paper transparent film biodegradation plastic replacement sustainable biomaterial

Highly durable machine-learned waterproof electronic glove based on low-cost thermal transfer printing for amphibious wearable applications

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Nano Research 2023年第4期16卷 5480-5489页

作者： Shengshun Duan Jiayi Wang Yong Lin Jianlong Hong Yucheng Lin Yier Xia Yinghui Li Di Zhu Wei Lei wenming su Baoping Wang Zheng Cui Wei Yuan Jun Wu Joint International Research Laboratory of Information Display and Visualization School of Electronic Science and EngineeringSoutheast UniversityNanjing 210096China Printable Electronics Research Centre Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

Gesture recording,modeling,and understanding based on a robust electronic glove(E-glove)are of great significance for efficient human-machine cooperation in harsh ***,such robust edge-intelligence interfaces remain challenging as existing E-gloves are limited in terms of integration,waterproofness,scalability,and interface stability between different ***,we report on the design,manufacturing,and application scenarios for a waterproof E-glove,which is of low cost,lightweight,and scalable for mass production,as well as environmental robustness,waterproofness,and *** improved neural network architecture is proposed to implement environment-adaptive learning and inference for hand gestures,which achieves an amphibious recognition accuracy of 100%in 26 categories by analyzing 2,600 hand gesture *** demonstrate that the E-glove can be used for amphibious remote vehicle navigation via hand gestures,potentially opening the way for efficient human-human and human-machine cooperation in harsh environments.

关键词： data glove transfer printing human-machine interfaces strain sensor amphibious control

Existence and asymptotics of normalized solutions for the logarithmic Schrödinger system

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Science China Mathematics 2024年第9期67卷 2019-2048页

作者： Qian Zhang wenming Zou Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China

This paper is concerned with the following logarithmic Schrodinger system:{-Δu_(1)+ω_(1)u_(1)=u_(1)u_(1)logu_(1)^(2)+2p/p+q|u_(2)|^(q)|u_(1)|^(p-2)u_(1),-Δu_(2)+ω_(2)u_(2)=u_(2)u_(2)log u_(2)^(2)+2q/p+q|u_(1)|^(p)|u_(2)|^(q-2)u_(2),∫_(Ω)|u_(i)|^(2)dx=ρ_(i),i=1,2,(u_(1),u_(2))∈H_(0)^(1)(Ω;R^(2)),where Ω=R^(N)or Ω■R^(N)(N≥3)is a bounded smooth domain,andω_(i)R,μ_(i),ρ_(i)>0 for i=1,***,p,q≥1,and 2≤p+q≤2^(*),where 2^(*):=2N/*** using a Gagliardo-Nirenberg inequality and a careful estimation of u log u^(2),firstly,we provide a unified proof of the existence of the normalized ground state solution for all 2≤p+q≤2^(*).Secondly,we consider the stability of normalized ground state ***,we analyze the behavior of solutions for the Sobolev-subcritical case and pass to the limit as the exponent p+q approaches 2^(*).Notably,the uncertainty of the sign of u log u^(2)in(0,+∞)is one of the difficulties of this paper,and also one of the motivations we are interested *** particular,we can establish the existence of positive normalized ground state solutions for the Brézis-Nirenberg type problem with logarithmic perturbations(i.e.,p+q=2^(*)).In addition,our study includes proving the existence of solutions to the logarithmic type Bréis-Nirenberg problem with and without the L^(2)-*** ∫_(Ω)|u_(i)|^(2)dx=ρ_(i)(i=1,2)by two different methods,*** results seem to be the first result of the normalized solution of the coupled nonlinear Schrodinger system with logarithmic perturbations.

关键词： logarithmic Schrodinger system Brézis-Nirenberg problem normalized solution existence and stability behavior of solutions

An improved wind quality control for the China-France Oceanography Satellite (CFOSAT) scatterometer

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Acta Oceanologica Sinica 2024年第5期43卷 100-109页

作者： Xiaoheng Mou wenming Lin School of Marine Sciences Nanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Space Ocean Remote Sensing and Application Ministry of Natural ResourcesBeijing 100081China

Quality control(QC)is an essential procedure in scatterometer wind retrieval,which is used to distinguish good-quality data from poor-quality wind vector cells(WVCs)for the sake of wind *** current wind processor of the China-France Oceanography Satellite(CFOSAT)scatterometer(CSCAT)adopts a maximum likelihood estimator(MLE)-based QC method to filter WVCs affected by geophysical noise,such as rainfall and wind *** the first Ku-band rotating fan-beam scatterometer,CSCAT can acquire up to 16 observations over a single WVC,giving abundant information with diverse incidence/azimuth angles,as such its MLE statistical characteristics may be different from the previous *** this study,several QC indicators,including MLE,its spatially averaged value(MLE_(m)),and the singularity exponents(SE),are analyzed using the collocated Global Precipitation Mission rainfall data as well as buoy data,to compare their sensitivity to rainfall and wind *** results show that wind error characteristics of CSCAT under different QC methods are similar to those of other Ku-band scatterometers,i.e.,SE is more suitable than other parameters for the wind QC at outer-swath and nadir regions,while MLE_(m) is the best QC indicator for the sweet region ***,SE is much more favorable than others at high wind *** combining different indicators,an improved QC method is developed for *** validation with the collocated buoy data shows that it accepts more WVCs,and in turn,improves the quality control of CSCAT wind data.

关键词： China-France Oceanography Satellite(CFOSAT) scatterometer winds quality control(QC) singularity exponent(SE)

Evolution of suspension bridge structural systems,design theories,and shape-finding methods:A literature survey

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第2期11卷 225-244页

作者： wenming Zhang Genmin Tian Yupeng Chen Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education Southeast UniversityNanjing 210096China State Key Laboratory of Safety Durability and Healthy Operation of Long Span BridgesSoutheast UniversityNanjing 210096China

Modern suspension bridges exhibit a trend of lighter structures,more diversified structural forms,and longer spans,the latter already exceeding two *** performance under dead and live loads depends on their structural and main cable systems,while cablesupported bridges especially rely on the design analysis and construction control of the main *** literary survey systematically analyzes the research progress and state-ofthe-art status quo in the structural systems and design theories of suspension bridges,focusing on the structural systems,main cable shape analyses,live load effect analyses,and emerging lucrative research *** than 100 reliable references have been surveyed.(1)Multi-span or multi-main cable schemes appeal to increasing attention,which may become a better choice in terms of structural systems in scenarios with extremely long spans and heavy *** cable layouts,such as spatial main cables and hybrid cable-stayed suspension systems have also become feasible approaches for enhancing structural stiffness.(2)The shape-finding analysis during the construction phase is more complex and has more essential factors than that of the completed bridge *** theories combining analytical methods and finite element methods are more suitable for the shape-finding analysis of complex cable systems than any single theory of the two,especially for novel cable systems.(3)The live load effect analysis methods based on traditional deflection theory or modified/improved deflection theories still have wide applications,but the refined theory of treating hangers as discrete members is also constantly developing,which is expected to provide new ideas for more complex structural analysis under the different types of live loads and their distribution forms.

关键词： suspension bridges Structural system Cable analysis Shape-finding analysis Construction control and calculation Live load effect