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Local vibration therapy promotes the recovery of nerve function in rats with sciatic nerve injury

Journal of Integrative Medicine 2022年第3期20卷 265-273页

作者： Lu Yin Yun An Xiao Chen Hui-xin yan tao Zhang Xin-gang Lu jun-tao yan Department of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China Department of Tuina Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China Department of Rehabilitation Medicine The Second Rehabilitation Hospital of ShanghaiShanghai 200441China Shanghai Key Laboratory of Clinical Geriatric Medicine Huadong HospitalFudan UniversityShanghai 200040China

Objective:It has been reported that local vibration therapy can benefit recovery after peripheral nerve injury,but the optimized parameters and effective mechanism were *** the present study,we investigated the effect of local vibration therapy of different amplitudes on the recovery of nerve function in rats with sciatic nerve injury(SNI).Methods:Adult male Sprague-Dawley rats were subjected to SNI and then randomly divided into 5 groups:sham group,SNI group,SNI+A-1 mm group,SNI+A-2 mm group,and SNI+A-4 mm group(A refers to the amplitude;n=10 per group).Starting on the 7th day after model initiation,local vibration therapy was given for 21 consecutive days with a frequency of 10 Hz and an amplitude of 1,2 or 4 mm for 5 *** sciatic function index(SFI)was assessed before surgery and on the 7th,14th,21st and 28th days after *** were harvested on the 28th day after surgery for morphological,immunofluorescence and Western blot ***:Compared with the SNI group,on the 28th day after surgery,the SFIs of the treatment groups were increased;the difference in the SNI+A-2 mm group was the most obvious(95%confidence interval[CI]:[5.86,27.09],P<0.001),and the cross-sectional areas of myocytes in all of the treatment groups were *** G-ratios in the SNI+A-1 mm group and SNI+A-2 mm group were reduced significantly(95%CI:[-0.12,-0.02],P=0.007;95%CI:[-0.15,-0.06],P<0.001).In addition,the expressions of S100 and nerve growth factor proteins in the treatment groups were increased;the phosphorylation expressions of ERK1/2 protein in the SNI+A-2 mm group and SNI+A-4 mm group were upregulated(95%CI:[0.03,0.96],P=0.038;95%CI:[0.01,0.94],P=0.047,respectively),and the phosphorylation expression of Akt in the SNI+A-1 mm group was upregulated(95%CI:[0.11,2.07],P=0.031).Conclusion:Local vibration therapy,especially with medium amplitude,was able to promote the recovery of nerve function in rats with SNI;this result was linked to the proliferation of S

关键词： Sciatic nerve injury Local vibration therapy Nerve function Myelination

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A novel way to synthesize Pb nanotapes in liquid ammonia

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Chinese Chemical Letters 2011年第8期22卷 993-996页

作者： Lei Sun Meng Lei Zhang Xiao jun tao yan Bao Zhao Key Laboratory for Special Functional Materials of Ministry of Education Henan University Kaifeng 475004 China

Lead nanotapes were synthesized in liquid ammonia solvent in the presence of sodium metal at low *** process was template *** electron microscopy（TEM） observations and X-ray diffraction（XRD） characterizations revealed that the as-prepared Pb nanotapes have average diameters in the range of 40-50 *** lengths up to several hundred nanometers, and exhibit cubic crystal structures.

关键词： Pb Nanotapes Chemical synthesis Liquid ammonia

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大跨变高度组合钢箱连续梁桥空间效应分析

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公路 2024年第8期69卷 71-76页

作者：周纪同郏亚坤李盘山苏秀丽陶延军王宇锋山东易方达建设项目管理有限公司济南市250000 上海市政工程设计研究总院(集团)有限公司上海市200092 济南城市建设集团有限公司济南市250000

不同于混凝土梁桥及钢箱梁桥,大跨变高度组合钢箱连续梁桥具有独特的空间受力特性。本研究以某大跨变高度组合钢箱连续梁桥为研究对象,建立空间有限元模型,从端横梁和中支点横梁的竖向剪力分配规律及偏载系数3个方面,探究其空间受力特... 详细信息

不同于混凝土梁桥及钢箱梁桥,大跨变高度组合钢箱连续梁桥具有独特的空间受力特性。本研究以某大跨变高度组合钢箱连续梁桥为研究对象,建立空间有限元模型,从端横梁和中支点横梁的竖向剪力分配规律及偏载系数3个方面,探究其空间受力特性。结果表明,组合钢箱梁端横梁处,顶板混凝土承受很小的竖向剪力,剪力主要由钢箱梁腹板承受;组合钢箱梁中支点横梁处,顶板混凝土承受很小的竖向剪力,剪力主要由底板混凝土和钢箱梁腹板承受,越靠近中支点横梁,底板混凝土承受竖向剪力所占比例越大,最大为45%;汽车偏载作用下,正应力偏载系数很小,腹板剪力偏载系数较大,支点处的剪力偏载系数最大可达1.76。研究结果对大跨组合钢箱梁桥的设计计算具有一定的指导意义。

关键词：桥梁工程组合钢箱连续梁空间效应剪力分配底板混凝土偏载系数

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Surface-induced Microstructure and Performance Changes in P3HT Ultrathin Films

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Chinese Journal of Polymer Science 2024年第6期42卷 805-814页

作者： Hong-tao Shan Jia-Xin He Bing-yan Zhu Xue-Ting Cao Ying-Ying yan Jian-jun Zhou Hong Huo Beijing Key Laboratory of Energy Conversion and Storage Materials College of ChemistryBeijing Normal UniversityBeijing100875China

In this work,poly(3-hexylthiophene)(P3HT)ultrathin films(P3HT-T)were prepared by spin-coating a dilute P3HT solution(in a toluene:o-dichlorobenzene(Tol:ODCB)blend with a volume ratio of 80:20)with ultrasonication and the addition of the nucleating agent bicycle[2.2.1]heptane-2,3-dicarboxylic acid disodium salt(HPN-68L)on glass,Si wafers and indium tin oxide(ITO)*** electrical and mechanical properties of the P3HT-T ultrathin films were investigated,and it was found that the conductivity and crack onset strain(COS)were simultaneously improved in comparison with those of the corresponding pristine P3HT film(P3HT-0,without ultrasonication and nucleating agent)on the same substrate,regardless of what substrate was ***,the conductivity of P3HT-T ultrathin films on different substrates was similar(varying from 3.7 S·cm^(-1)to 4.4 S·cm^(-1)),yet the COS increased from 97%to 138%by varying the substrate from a Si wafer to *** grazing-incidence wide-angle X-ray diffraction(GIXRD),UV-visible(UV-Vis)spectroscopy and atomic force microscopy(AFM),we found that the solid order and crystallinity of the P3HT-T ultrathin film on the Si wafer are highest,followed by those on glass,and much lower on ***,the surface energy and roughness of three substrates were investigated,and it was found that the polar component of the surface energyγp plays a critical role in determining the crystalline microstructures of P3HT ultrathin films on different *** work indicates that the P3HT ultrathin film can obviously improve the stretchability and simultaneously retain similar electrical performance when a suitable substrate is *** findings offer a new direction for research on stretchable CP ultrathin films to facilitate future practical applications.

关键词： P3HT ultrathin film Substrate Crystalline microstructures Polar component of the surface energy Electrical and stretchable performances

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Deep Guided Attention Network for Joint Denoising and Demosaicing in Real Image

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Chinese Journal of Electronics 2024年第1期33卷 303-312页

作者： tao ZHANG Ying FU jun ZHANG School of Computer Science and Technology Beijing Institute of Technology Advanced Reasearch Institute of Multidisciplinary Science Beijing Institute of Technology

Denoising(DN) and demosaicing(DM) are the first crucial stages in the image signal processing pipeline. Recently, researches pay more attention to solve DN and DM in a joint manner, which is an extremely undetermined inverse problem. Existing deep learning methods learn the desired prior on synthetic dataset, which limits the generalization of learned network to the real world data. Moreover, existing methods mainly focus on the raw data property of high green information sampling rate for DM, but occasionally exploit the high intensity and signalto-noise(SNR) of green channel. In this work, a deep guided attention network(DGAN) is presented for real image joint DN and DM(JDD), which considers both high SNR and high sampling rate of green information for DN and DM, respectively. To ease the training and fully exploit the data property of green channel, we first train DN and DM sub-networks sequentially and then learn them jointly, which can alleviate the error accumulation. Besides, in order to support the real image JDD, we collect paired raw clean RGB and noisy mosaic images to conduct a realistic dataset. The experimental results on real JDD dataset show the presented approach performs better than the state-of-the-art methods, in terms of both quantitative metrics and qualitative visualization.

关键词： Training Visualization Inverse problems Green products Noise reduction Pipelines Signal processing

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Theoretical insights into efficient oxygen evolution reaction using non-noble metal single-atom catalysts on W2CO2 MXene

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Rare Metals 2024年第10期43卷 5082-5094页

作者： Jing-Yu Zhou Zhi-Cheng Han Shu Zhao tao yang Da-Zhou yan Hai-jun Yu Institute of Advanced Battery Materials and Devices College of Materials Science and EngineeringBeijing University of Technology Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of Technology China ENFI Engineering Corporation National Engineering Research Center of Silicon-Based Materials Manufacturing Technology

The pursuit of highly active oxygen evolution reaction （OER） catalysts,especially those free of noble metals,is a focal point in fuel cell *** extensive density functional theory calculations,this study designed and evaluated the activity and stability of singleatom catalysts （SACs） composed of 3d,4d and 5d transition metals supported on tungsten-based MXene for OER *** highlighted the exceptional OER performance of Ni@W2CO2,Rh@W2CO2and Pt@W2CO2,displaying remarkably low overpotentials The catalytic activity of TM@W2CO2SACs exhibited a robust correlation with surface properties,particularly the d-band center index and surface work *** Ni@W2CO2,Rh@W2CO2and Pt@W2CO2emerged as promising candidates for OER and oxygen reduction reaction （ORR） bifunctional catalysis,while Pt@W2CO2and Rh@ W2CO2showed high potential for OER and hydrogen evolution reaction （HER） bifunctional catalysis The effectiveness of tungsten-based MXene as a substrate for non-noble-metal SACs marks a breakthrough in OER catalyst design,driving advancements towards sustainable energy solutions and addressing critical challenges in energy conversion and storage.

关键词： Density functional theory MXene Non-noble metal Oxygen evolution reaction Single-atom catalysts

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Camera,LiDAR,and IMU Based Multi-Sensor Fusion SLAM:A Survey

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Tsinghua Science and Technology 2024年第2期29卷 415-429页

作者： jun Zhu Hongyi Li tao Zhang Department of Automation Tsinghua UniversityBeijing 100084China

In recent years,Simultaneous Localization And Mapping(SLAM)technology has prevailed in a wide range of applications,such as autonomous driving,intelligent robots,Augmented Reality(AR),and Virtual Reality(VR).Multi-sensor fusion using the most popular three types of sensors(e.g.,visual sensor,LiDAR sensor,and IMU)is becoming ubiquitous in SLAM,in part because of the complementary sensing capabilities and the inevitable shortages(e.g.,low precision and long-term drift)of the stand-alone sensor in challenging *** this article,we survey thoroughly the research efforts taken in this field and strive to provide a concise but complete review of the related ***,a brief introduction of the state estimator formation in SLAM is ***,the state-of-the-art algorithms of different multi-sensor fusion algorithms are *** we analyze the deficiencies associated with the reviewed approaches and formulate some future research *** paper can be considered as a brief guide to newcomers and a comprehensive reference for experienced researchers and engineers to explore new interesting orientations.

关键词： multi-sensor fusion Simultaneous Localization And Mapping(SLAM) navigation localization

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Distributed Minimum-Energy Containment Control of Continuous-Time Multi-Agent Systems by Inverse Optimal Control

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1533-1535页

作者： Fei yan Xiangbiao Liu tao Feng School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China National Engineering Laboratory of Integrated Transportation Big Data Application Technology Chengdu 611756China

Dear Editor,This letter focuses on the distributed optimal containment control of continuous-time multi-agent systems(CTMASs)with respect to the minimum-energy performance index over fixed *** achieve this,we firstly investigate the optimal containment control problem using the inverse optimal control method,where all states of followers asymptotically converge to the convex hull spanned by the leaders while some quadratic performance indexes get minimized.A sufficient condition for existence of the distributed optimal containment control protocol is *** introducing the parametric algebraic Riccati equation(PARE),it is strictly proved that the global performance index can be used to approximate the standard minimumenergy performance index as the parameters tends to *** consequence,the standard minimum-energy cooperative containment control can be solved by local steady state feedback protocols.

关键词： optimal infinity algebraic

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Topology Optimization of Two Fluid Heat Transfer Problems for Heat Exchanger Design

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1949-1974页

作者： Kun yan Yunyu Wang jun yan School of Chemical Engineering Dalian University of TechnologyDalian116024China Jianghuai Advanced Technology Center Hefei230000China State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsInternational Research Center for Computational MechanicsDalian University of TechnologyDalian116024China

Topology optimization of thermal-fluid coupling problems has received widespread *** article proposes a novel topology optimization method for laminar two-fluid heat exchanger *** proposed method utilizes an artificial density field to create two permeability interpolation functions that exhibit opposing trends,ensuring separation between the two fluid ***,a Gaussian function is employed to construct an interpolation function for the thermal conductivity ***,a computational program has been developed on the OpenFOAM platform for the topology optimization of two-fluid heat *** program leverages parallel computing,significantly reducing the time required for the topology optimization *** enhance computational speed and reduce the number of constraint conditions,we replaced the conventional pressure drop constraint condition in the optimization problem with a pressure inlet/outlet boundary *** 3D optimization results demonstrate the characteristic features of a surface structure,providing valuable guidance for designing heat exchangers that achieve high heat exchange efficiency while minimizing excessive pressure *** the same time,a new structure appears in large-scale topology optimization,which proves the effectiveness and stability of the topology optimization program written in this paper in large-scale calculation.

关键词： Topology optimization two fluid heat exchanger OpenFOAM large scale

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Resilient performance of self-centering hybrid rocking walls with curved interface under pseudo-static loading

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Earthquake Engineering and Engineering Vibration 2024年第1期23卷 65-85页

作者： Su Xing yan Shi Sun Xianglei Wang tao School of Civil Engineering Shenyang Jianzhu UniversityShenyang 110168China PetroChina East China Design Institute Co. Ltd.Qingdao 266000China Qingdao Country Garden Bolin Real Estate Co. Ltd.Qingdao 266100China

Frame and rocking wall(FRW)structures have excellent resilient performance during ***,the concrete at interfacial corners of rocking walls(RWs)is easily crushed due to local extreme compression during the rocking *** innovative RW with a curved interface is proposed to prevent interfacial corners from producing local damage,enhancing its earthquake resilient performance(ERP).The precast wall panel with a curved interface is assembled into an integral self-centering hybrid rocking wall(SCRW)by two post-tensioned unbonded prestressed ***,two ordinary energy dissipation steel rebars and two shear reinforcements are arranged to increase the energy dissipation capacity and lateral *** SCRW specimens and one monolithic reinforced concrete(RC)shear wall(SW)were tested under pseudo-static loading to compare the ERPs of the proposed SCRW and the SW,focusing on studying the effect of the curved interface on the *** key resilient performance of rocking effects,failure modes,and hysteretic properties of the SCRW were *** results show that nonlinear deformations of the SCRW are concentrated along the interface between the SCRW and the foundation,avoiding damage within the *** restoring force provided by the prestressed tendons can effectively realize self-centering capacity with small residual deformation,and the resilient performance of the SCRW is better than that of monolithic *** addition,the curved interface of the SCRW makes the rocking center change and move inward,partially relieving the stress concentration and crush of *** rocking range of the rocking center is about 41.4%of the width of the SCRW.

关键词： self-centering hybrid rocking wall(SCRW) monolithic shear wall(SW) earthquake resilient performance(ERP) curved interface rocking center

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