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Optoelectronics Letters 2024年第10期20卷 623-628页

作者： PING Haoyu MA Yongjie ZHU Guangya zhang Jiaqi School of Physics and Electronic Engineering Northwest Normal University

To address traffic congestion, this study improves Mobile Netv2-you only look once version 4(YOLOv4) target detection algorithm(Mobile Netv2-YOLOv4-K++F) and introduces an embedded traffic information processing solution based on edge computing. We transition models initially designed for large-scale graphics processing units(GPUs) to edge computing devices, maximizing the strengths of both deep learning and edge computing technologies. This approach integrates embedded devices with the current traffic system, eliminating the need for extensive equipment updates. The solution enables real-time traffic flow monitoring and license plate recognition at the edge, synchronizing instantaneously with the cloud, allowing for intelligent adjustments of traffic signals and accident forewarnings, enhancing road utilization, and facilitating traffic flow optimization. Through on-site testing using the RK3399PRO development board and the Mobile Netv2-YOLOv4-K++F object detection algorithm, the upgrade costs of this approach are less than one-tenth of conventional methods. Under favorable weather conditions, the traffic flow detection accuracy reaches as high as 98%, with license plate recognition exceeding 80%.

关键词： A

Publication-level analysis of Journal of Plant Ecology during 2018-2022

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Journal of Plant Ecology 2024年第4期17卷 197-201页

作者： Yu Liao Pu Wang Lijuan Liu Wen-Hao zhang National Science Library Chinese Academy of SciencesBeijing 100190China Center for Documentation and Information Institute of BotanyChinese Academy of SciencesBeijing 100093China State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China

Journal of Plant Ecology(JPE)was established in 2008 and is sponsored by the Botanical Society of China and the Institute of Botany,Chinese Academy of *** by Oxford University Press,UK,JPE encompasses a wide range of article types within the expansive field of plant *** of July 2021,JPE has transitioned to fully Open Access,ensuring unrestricted access to the full text for both readers and *** shift enhances the journal’s role as a crucial platform for plant ecologists worldwide to disseminate their research findings.

关键词： Open Plant Access

Synergistic Dual Dynamic Bonds in Covalent Adaptable Networks

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CCS Chemistry 2024年第1期6卷 41-56页

作者： Jun Zhao Zhaoming zhang Chunyu Wang Xuzhou Yan School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai

Covalent adaptable networks(CANs),comprising polymer networks crosslinked by dynamic covalent bonds(DCBs),have garnered considerable attention as sustainable *** the stress relaxation of CANs is essential for controlling their viscoelastic *** unexpected acceleration of stress relaxation has been observed in CANs containing dual dynamic *** dynamic behavior of the second dynamic bonds can accelerate stress relaxation and lower the relaxation activation energy of dual dynamic CANs compared to analogous CANs that rely on only one type of *** findings complement current approaches that utilize catalysts or adjust network *** this minireview,we summarize the synergistic acceleration effects in various CANs containing dual dynamic *** classify these effects based on the second dynamic bonds,including noncovalent bonds,mechanical bonds,and the second *** also discuss the mechanisms behind this ***,we highlight the challenges and offer perspectives on harnessing the synergistic effects of these dual dynamic systems to expand the chemistry and applications of CANs.

关键词： covalent adaptable networks dynamic covalent bonds dynamic materials stress relaxation synergistic effect

Colorimetric and Photothermal Dual-modal Visual Detection of Iodide Ion Based on G-Quadruplex-Hemin Cascade Signal Amplification

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Chemical Research in Chinese Universities 2024年第2期40卷 305-310页

作者： CHEN Yanyue LIU Jiali LIU Jiawen HU Rong YANG Yunhui zhang Xiaobing College of Chemistry and Chemical Engineering Yunnan Normal UniversityKunming650500P.R.China Molecular Science and Biomedicine Laboratory State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollaborative Innovation Center for Molecular Engineering for TheronasticsHunan UniversityChangsha410082P.R.China

The insufficient internal resorption of iodide ions(I−)leads to thyroid disorders,such as goiter,hypothyroidism,and cretinism in *** this paper,a portable point-of-care testing(POCT)platform was developed for the dual-modal analysis of I^(−),seamlessly integrating both colorimetric and photothermal thermometer *** quantification of results was achieved using a standard thermometer or smartphone.G-Quadruplex/Hemin(G4/Hemin)is the DNAzyme with peroxidase-like *** catalytic efficacy of G-quadruplex structures can be enhanced with the help of I^(−),manifesting as multicolor transitions from colorless to green and then blue,and accompanied by the increase of temperature,which can be used for the quantitative detection of I^(−).Additionally,digital analysis according to the three-color channels(R/G/B)by a cellphone eliminated the requirement for intricate *** dual-modal method for portable I^(−)determination is cost-effectiveness,simplicity,remarkable sensitivity(0.5 nmol/L)and ***,it was applied to determining the concentration of I^(−)in spiked serum samples.

关键词： Dual-modal platform G-Quadruplex Iodide ion Point-of-care testing(POCT) Aptasensor

Lipid nanovehicles overcome barriers to systemic RNA delivery: Lipid components, fabrication methods, and rational design

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Acta Pharmaceutica Sinica B 2024年第2期14卷 579-601页

作者： Jing Yan Hao zhang Guangfeng Li Jiacan Su Yan Wei Can Xu Institute of Translational Medicine Shanghai UniversityShanghai 200444China Institute of Medicine Shanghai UniversityShanghai 200444China Department of Orthopedics Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai 200092China Department of Orthopedics Shanghai Zhongye HospitalShanghai 200941China Organoid Research Center Shanghai UniversityShanghai 200444China Department of Gastroenterology Changhai HospitalShanghai 200433China

Lipid nanovehicles are currently the most advanced vehicles used for RNA delivery,as demonstrated by the approval of patisiran for amyloidosis therapy in *** illuminate the unique superiority of lipid nanovehicles in RNA delivery,in this review,we first introduce various RNA therapeutics,describe systemic delivery barriers,and explain the lipid components and methods used for lipid nanovehicle ***,we emphasize crucial advances in lipid nanovehicle design for overcoming barriers to systemic RNA ***,the current status and challenges of lipid nanovehicle-based RNA therapeutics in clinical applications are also *** objective is to provide a comprehensive overview showing how to utilize lipid nanovehicles to overcome multiple barriers to systemic RNA delivery,inspiring the development of more high-performance RNA lipid nanovesicles in the future.

关键词： Lipid nanovehicles RNAtherapeutics Barriers to systemicRNA delivery Lipid components Fabricationmethods Lipid nanovehicledesign Extrahepatictissue targeting Organ tropism

Energy Efficiency Maximization in Mobile Edge Computing Networks via IRS assisted UAV Communications

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Computer Modeling in Engineering & Sciences 2024年第2期138卷 1865-1884页

作者： Ying zhang Weiming Niu Supu Xiu Guangchen Mu School of Electronic Information Engineering Henan Institute of TechnologyXinxiang453003China Houde College Henan Institute of TechnologyXinxiang453003China Department of Science Henan Institute of TechnologyXinxiang453003China

In this paper,we investigate the energy efficiency maximization for mobile edge computing(MEC)in intelligent reflecting surface(IRS)assisted unmanned aerial vehicle(UAV)*** particular,UAVcan collect the computing tasks of the terrestrial users and transmit the results back to them after *** jointly optimize the users’transmitted beamforming and uploading ratios,the phase shift matrix of IRS,and the UAV trajectory to improve the energy *** formulated optimization problem is highly non-convex and difficult to be solved ***,we decompose the original problem into three *** first propose the successive convex approximation(SCA)based method to design the beamforming of the users and the phase shift matrix of IRS,and apply the Lagrange dual method to obtain a closed-form expression of the uploading *** the trajectory optimization,we propose a block coordinate descent(BCD)based method to obtain a local optimal ***,we propose the alternating optimization(AO)based overall algorithmand analyzed its complexity to be equivalent or lower than existing *** results show the superiority of the proposedmethod compared with existing schemes in energy efficiency.

关键词： Mobile edge computing(MEC) unmanned aerial vehicle(UAV) intelligent reflecting surface(IRS) energy efficiency

Revealing excited states of rotational Bose-Einstein condensates

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The Innovation 2024年第1期5卷 41-48页

作者： Jianyuan Yin Zhen Huang Yongyong Cai Qiang Du Lei zhang School of Mathematical Sciences Laboratory of Mathematics and Applied MathematicsPeking UniversityBeijing 100871China Department of Mathematics National University of SingaporeSingapore 119076Singapore Department of Mathematics University of CaliforniaBerkeleyBerkeleyCA 94720USA School of Mathematical Sciences Beijing Normal UniversityBeijing 100875China Department of Applied Physics and Applied Mathematics and Data Science Institute Columbia UniversityNew YorkNY 10027USA Beijing International Center for Mathematical Research Center for Quantitative BiologyCenter for Machine Learning ResearchPeking UniversityBeijing 100871China

Rotational Bose-Einstein condensates can exhibit quantized vortices as topological *** this study,the ground and excited states of the rotational Bose-Einstein condensates are systematically studied by calculating the stationary points of the Gross-Pitaevskii energy *** excited states and their connections at different rotational frequencies are revealed in solution landscapes constructed with the constrained high-index saddle dynamics *** excitation mechanisms are identified:vortex addition,rearrangement,merging,and *** demonstrate changes in the ground state with increasing rotational frequencies and decipher the evolution of the stability of ground states.

关键词： method rotational excited

Response of Bacterial Community and Enzyme Activity of Greenhouse Tomato under Different Irrigation Systems

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1543-1568页

作者： Haijian Yang Mingzhi zhang Na Xiao Yuan Li Faculty of Engineering Huanghe Science and Technology UniversityZhengzhou450063China Northwest Land and Resources Research Center Shaanxi Normal UniversityXi’an710119China

The micro-sprinkler irrigation mulched(MSM)has been suggested as a novel water-saving approach in con-trolled environment ***,the effects of microbial community structure and enzyme activity in the rhizosphere soil on crop growth under MSM remain *** study conducted a randomized experimen-tal design using greenhouse tomatoes to investigate changes in bacterial community structure and enzyme activity in rhizosphere soil under different irrigation frequencies(F)and amounts(I)of ***ﬁndings revealed that with the increase of F or I,The total count of soil bacteria in tomatoesﬁrst rose and then fell in terms of Opera-tional Taxonomic Units(OTUs)classiﬁ*** to other F,the most abundance of nitrogen and phos-phorus metabolism genes and enzyme activities were observed with a 5-day ***,the diversity of soil bacterial community structure initially rose before eventually declining with the increase of the *** 1.00 Epan(cumulative evaporation of a 20 cm standard pan)under MSM helped boost the abundance of nitrogen and phosphorus metabolism functional genes in soil bacteria,ensuring higher enzyme activities related to nitro-gen,carbon,and phosphorus metabolism in the rhizosphere soil of ***’yield initially rose before eventually declining with the increase in F or I,whereas I had a more signiﬁcant effect on yield.A 1.00%increase in I yielded a minimum of 39.24%increase in tomato *** study showed a positive correlation between soil bacterial community,soil enzyme activity,and greenhouse tomato yield under *** the results comprehensively,the combined irrigation mode of F of 5 d and I of 1.00 Epan was recommended for greenhouse tomatoes under *** conclusion provides theoretical support for water-saving practices and yield improve-ment in facility agriculture,especially tomato cultivation.

关键词： Greenhouse tomato yield bacterial community enzyme activity model

Nonlinear Flap-Wise Vibration Characteristics ofWind Turbine Blades Based onMulti-Scale AnalysisMethod

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Energy Engineering 2024年第2期121卷 483-498页

作者： Qifa Lang Yuqiao Zheng Tiancai Cui Chenglong Shi Heyu zhang School of Mechanical and Electrical Engineering Lanzhou University of TechnologyLanzhou730050China

This work presents a novel approach to achieve nonlinear vibration response based on the Hamilton *** chose the 5-MW reference wind turbine which was established by the National Renewable Energy Laboratory(NREL),to research the effects of the nonlinear flap-wise vibration *** turbine wheel is simplified by treating the blade of a wind turbine as an Euler-Bernoulli beam,and the nonlinear flap-wise vibration characteristics of the wind turbine blades are discussed based on the simplification ***,the blade’s large-deflection flap-wise vibration governing equation is established by considering the nonlinear term involving the centrifugal ***,it is truncated by the Galerkin method and analyzed semi-analytically using the multi-scale analysis method,and numerical simulations are carried out to compare the simulation results of finite elements with the numerical simulation results using Campbell diagram analysis of blade *** results indicated that the rotational speed of the impeller has a significant impact on blade *** the wheel speed of 12.1 rpm and excitation amplitude of 1.23 the maximum displacement amplitude of the blade has increased from 0.72 to *** the amplitude-frequency curve,it can be seen that the multi-peak characteristic of blade amplitude frequency is under centrifugal *** phase trajectories in blade nonlinear vibration,exhibiting periodic motion characteristics,are found through phase diagrams and Poincare section diagrams.

关键词： Wind turbine blades nonlinear vibration Galerkin method multi-scales method

Development of Chinese herbal medicine for sensorineural hearing loss

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Acta Pharmaceutica Sinica B 2024年第2期14卷 455-467页

作者： Yunhao Wu Jingwen zhang Qiuping Liu Zhuang Miao Renjie Chai Wenyong Chen State Key Laboratory of Bioelectronics Department of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologyAdvanced Institute for Life and HealthJiangsu Province HighTech Key Laboratory for Bio-Medical ResearchSoutheast UniversityNanjing 210096China Department of Otolaryngology-Head and Neck the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510120China Department of Otolaryngology-Head and Neck Surgery Affiliated Hospital of Jiangnan UniversityWuxi 214000China Department of Otolaryngology Head and Neck Surgery Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610000China Co-Innovation Center of Neuroregeneration Nantong UniversityNantong 226001China Institute for Stem Cell and Regeneration Chinese Academy of ScienceBeijing 100085China Beijing Key Laboratory of Neural Regeneration and Repair Capital Medical UniversityBeijing 100069China

According to the World Health Organization’s world report on hearing,nearly 2.5 billion people worldwide will suffer from hearing loss by 2050,which may contribute to a severe impact on individual life quality and national *** hearing loss(SNHL)occurs commonly as a result of noise exposure,aging,and ototoxic drugs,and is pathologically characterized by the impairment of mechanosensory hair cells of the inner ear,which is mainly triggered by reactive oxygen species accumulation,inflammation,and mitochondrial *** recent advances have been made in understanding the ability of cochlear repair and regeneration,there are still no effective therapeutic drugs for *** herbal medicine which is widely distributed and easily accessible in China has demonstrated a unique curative effect against SNHL with higher safety and lower cost compared with Western *** we present trends in research for Chinese herbal medicine for the treatment of SNHL,and elucidate their molecular mechanisms of action,to pave the way for further research and development of novel effective drugs in this field.

关键词： Sensorineural hearing loss Chinese herbal medicine Molecular mechanism Active ingredients Prescriptions Ototoxic drugs Noise Hair cells