检索结果-南通市图书馆

Science China Chemistry 2025年第1期68卷 297-307页

作者： Bin Fang Limin Wang Haoqin Li Jiaxin Zhang Yang Ding Pan Pan Li bo peng Hua Bai Lin Li Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials &Engineering Northwestern Polytechnical University Institute of Flexible Electronics (IFE Future Technologies) Xiamen University

Hepatic ischemia-reperfusion injury（HIRI） is characterized by mitochondrial dysfunction and oxidative stress. Monitoring mitochondrial hydrogen peroxide（mtH2O2） levels in real-time through super-resolution imaging is crucial for elucidating its distribution in live cells and its mechanism of action during HIRI. However, low-background fluorogenic probes have been overlooked in the context of super-resolution imaging. In this study, we developed a low-background fluorogenic probe（MitoWG） with the potential for super-resolution morphology-correlated mitochondrial identification to track the fluctuates of mtH2O2in HIRI. Activation of the desirable fluorescence properties of the probe by mtH2O2was confirmed using structural illumination microscopy（SIM）, enabling high-quality mitochondrial imaging with exceptional specificity and *** in mtH2O2levels were successfully observed in both cellular and rat models of HIRI. Furthermore, we associated the decline in mitochondrial redox homeostasis with accelerated mtH2O2production during HIRI, which triggered mitophagy deficiency and led to cell death. In conclusion, Mito-WG possesses excellent photophysical and low-background properties for SIM imaging, making it a promising tool for mtH2O2tracking in HIRI research and clinical diagnosis.

关键词： hepatic ischemia-reperfusion injury low-background mtH2O2-activatable super-resolution imaging fluorogenic probe

The twisted two-dimensional ferroelectrics

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Semiconductors 2023年第1期44卷 32-42页

作者： Xinhao Zhang bo peng National Engineering Research Center of Electromagnetic Radiation Control Materials School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 611731China

Since the beginning of research on two-dimensional(2D)materials,a few numbers of 2D ferroelectric materials have been predicted or experimentally confirmed,but 2D ferroelectrics as necessary functional materials are greatly important in developing future electronic *** breakthroughs in 2D ferroelectric materials are impressive,and the physical and structural properties of twisted 2D ferroelectrics,a new type of ferroelectric structure by rotating alternating monolayers to form an angle with each other,have attracted widespread interest and ***,we review the latest research on twisted 2D ferroelectrics,including Bernal-stacked bilayer graphene/BN,bilayer boron nitride,and transition metal ***,we prospect the development of twisted 2D ferroelectrics and discuss the challenges and future of 2D ferroelectric materials.

关键词： magic angle multiferroic ferromagnetic electric polarization long-range

Compressive behavior of composite panels with deeply embedded delamination

在线全文

学校读者我要写书评

暂无评论

航空动力学报 2012年第1期27卷 82-88页

作者： FU Hui-min peng bo Research Center of Small Sample Technology Beijing University of Aeronautics and AstronauticsBeijing 100191China

The compressive behavior of laminates with a deeply embedded circular delamination was studied numerically and *** the finite element analysis(FEA),virtual crack closure technique(VCCT) and B-K law were employed to simulate the delamination growth,and the contact of the two substrates was *** effect of the delamination size and through-thickness position on the compressive behavior of laminates with an artificially embedded circular delamination was *** is found that the through-thickness position affects the buckling mode,which then strongly influences delamination growth speed and direction,as well as the dominant component energy release rate(ERR).The numerical results agreed well with the experimental results.

关键词： composite compressive failure delamination propagation buckling VCCT(virtual crack uosure technique)

数字经济对农业新质生产力的影响及作用机制研究

在线全文

学校读者我要写书评

暂无评论

当代经济 2025年第1期42卷 16-24页

作者：彭勃张红岩河南科技学院经济与管理学院

农业新质生产力是推进中国式农业农村现代化、铸就农业强国的关键力量，数字经济的迅猛崛起则为其注入了强劲的发展动能。选取2012—2022年我国30个省份的面板数据进行研究。通过回归分析发现：首先，数字经济的发展对农村新质生产力的... 详细信息

农业新质生产力是推进中国式农业农村现代化、铸就农业强国的关键力量，数字经济的迅猛崛起则为其注入了强劲的发展动能。选取2012—2022年我国30个省份的面板数据进行研究。通过回归分析发现：首先，数字经济的发展对农村新质生产力的提升具有显著的促进作用，然而通过进一步的分位数回归分析发现，这种促进作用存在一定的瓶颈期。其次，将这30个省份划分为东部、中部和西部区域后，发现数字经济发展对农村新质生产力的提升作用在西部经济欠发达地区表现得更为明显。最后，通过中介变量模型发现科技创新是数字经济推动乡村振兴质量提升的重要中介变量。因此，应加强数字经济建设，促进科技创新，使数字经济在推动农业新质生产力高质量发展中发挥关键作用，为实现乡村的全面振兴提供有力支持。

关键词：农业新质生产力数字经济机制研究

来源：博看期刊

Ferromagnetic and ferroelectric two-dimensional materials for memory application

在线全文

学校读者我要写书评

暂无评论

Nano Research 2021年第6期14卷 1802-1813页

作者： Zhen Liu Longjiang Deng bo peng National Engineering Research Center of Electromagnetic Radiation Control Materials School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu611731China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu611731China

The discoveries of ferromagnetic and ferroelectric two-dimensional(2D)materials have dramatically inspired intense interests due to their potential in the field of spintronic and nonvolatile *** review focuses on the latest 2D ferromagnetic and ferroelectric materials that have been most recently studied,including insulating ferromagnetic,metallic ferromagnetic,antiferromagnetic and ferroelectric 2D *** fundamental properties that lead to the long-range magnetic orders of 2D materials are *** low Curie temperature(Tc)and instability in 2D systems limits their use in practical applications,and several strategies to address this constraint are proposed,such as gating and composition stoichiometry.A van der Waals(vdW)heterostructure comprising 2D ferromagnetic and ferroelectric materials will open a door to exploring exotic physical phenomena and achieve multifunctional or nonvolatile devices.

关键词： two-dimensional(2D)materials ferromagnetic ferroelectric heterostructure nonvolatile memory

Non-IID federated learning via random exchange of local feature maps for textile IIoT secure computing

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2022年第7期65卷 16-31页

作者： bo peng Mingmin CHI Chao LIU School of Computer Science Shanghai Key Laboratory of Data Science Fudan University Zhongshan Pool Net Technology Co.Ltd. Zhongshan Fudan Joint Innovation Center 3. Zhengzhou Zhongke Institute of Integrated Circuit and System Application

With the fast development of artificial intelligence(AI) and industrial Internet of Things(IIoT)technologies, it is challenging to deal with the problems of data privacy protection and secure *** recent years, federated learning(FL) is proposed to attack the challenges of learning shared models collaboratively while protecting security based on the data from cross-domain clients. However, data in the real environment is usually not independent and identically distributed(Non-IID) due to the differences in business, working environments, and data acquisition, and thus classic federated methods suffer from significant performance degradation. In this paper, a novel federated framework is proposed for secure textile fiber identification(Fed TFI) via cross-domain texture representation based on high-definition fabric images. In addition to sharing the gradient of Fed TFI, the local patch of feature maps between crossdomain clients is randomly exchanged to build a richer image texture feature distribution while protecting data security simultaneously for secure computing. Furthermore, a texture embedding layer is designed to provide a joint representation through similarity measure between triplet samples in low-dimensional *** verify the effectiveness of the proposed framework, two textile image datasets, i.e., one public and the other we collected, are utilized to construct four Non-IID scenarios, including label skew, feature skew, and two combined skew scenarios. The experimental results confirm the effectiveness of our model to obtain better detection accuracies than benchmarks in four Non-IID scenarios by keeping data privacy for secure computing in fabric IIoT.

关键词： federated learning Federated learning Secure computing secure computing Industrial Internet of Things (IIoT) industrial Internet of Things (IIoT) machine vision Machine vision texture encoding Image classification image classification Non-IID

同方期刊数据库

Spectroscopic properties of Er^(3+)-doped fluoroindate glasses

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2022年第7期40卷 1037-1042页

作者： Zhen Liu Jiangbo She bo peng State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision MechanicsChinese Academy of Sciences(CAS)Xi'an 710119China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

The optical and thermal properties of a new class of fluoroindate glass with different erbium contents were investigated via Raman,transmission,and fluorescence spectroscopies,fluorescence decay curve analysis,and differential scanning *** strength parameters of the samples were calculated using the Judd-Ofelt *** mid-infrared luminescence properties of erbium-doped fluoroindate glasses were studied,and a strong emission at 2.7μm was *** with the traditional ZBLAN glass,this glass has excellent emission properties,especially a longer fluorescence lifetime(7.09 ms)and larger emission cross-section(6.95×10^(-21) cm^(2))at 2.7μ*** results indicate that fluoroindate glass is an attractive host for mid-infrared lasers and as a gain medium for optical amplifier applications.

关键词： Optical materials Spectroscopic properties Luminescence Fluoroindate glasses Rare earths

A voltage support control strategy based on three-port flexible multi-state switch in distribution networks

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2020年第8期22卷 192-202页

作者： bo peng Guorong ZHANG School of Electrical Engineering and Automation Hefei University of TechnologyHefei 230009People's Republic of China

Voltage sags in power system may lead to serious problems such as the off-grid of distributed generation and electrical equipment *** a novel type of power electronic equipment,a flexible multi-state switch(FMSS)is capable to support the voltage during the grid *** this paper,a voltage control strategy to support the voltage in a distribution network is proposed by introducing three-port *** positive-negative-sequence compensation(PNSC)scheme is adopted to control the active and reactive *** control scheme eliminates active power oscillations at the port of voltage sags and reduces coupling oscillations of other *** on the characteristics of the voltage support under PNSC scheme,two voltage support strategies are proposed.A proportional-integral controller is introduced to provide the reactive power references,which eliminates the errors when estimating the grid voltage and impedance.A current limiting scheme is adopted to keep the port current in a safe range by adjusting the active and reactive power *** voltage support strategies in two different voltage sags are simulated,and results show the feasibility and effectiveness of the proposed control strategies.

关键词： flexible multi-state switch voltage support low-voltage ride-through reactive power control

A Novel Competition-Based Coordination Model With Dynamic Feedback for Multi-Robot Systems

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2023年第10期10卷 2029-2031页

作者： bo peng Xuerui Zhang Mingsheng Shang Chongqing Key Laboratory of Big Data and Intelligent Computing Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714 Chongqing School University of Chinese Academy of SciencesChongqing 400714China Chongqing Key Laboratory of Big Data and Intelligent Computing Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714China

Dear Editor, Task allocation strategies are important in multi-robot systems and have been intensely investigated by researchers because they are critical in determining the performance of the system. In this letter, a novel competition-based coordination model is proposed to solve the multi-robot task allocation problem and applied to a multi-robot object tracking scenario.

关键词： robot Robot Dynamic

;unctional metabolomics： from biomarker ：liscovery to metabolome reprogramming

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2015年第9期6卷 628-637页

作者： bo peng Hui Li Xuan-Xian peng Center for Proteomics and Metabolomics State Key Laboratory of Biocontrol School of Life Sciences MOE Key Lab Aquat Food Safety School of Life Sciences Sun Yat-sen University Guangzhou 510275 China Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

Metabolomics is emerging as a powerful tool for studying metabolic processes, identifying crucial biomarkers responsible for metabolic characteristics and revealing metabolic mechanisms, which construct the content of discovery metabolomics. The crucial biomarkers can be used to reprogram a metabolome, leading to an aimed metabolic strategy to cope with alteration of internal and external environments, naming reprogramming metabo- Iomics here. The striking feature on the similarity of the basic metabolic pathways and components among vastly different species makes the reprogramming metabolomics possible when the engineered metabolites play biological roles in cellular activity as a substrate of enzymes and a regulator to other molecules including proteins. The reprogramming metabolomics approach can be used to clarify metabolic mechanisms of responding to changed internal and external environmental factors and to estab- lish a framework to develop targeted tools for dealing with the changes such as controlling and/or preventing infec- tion with pathogens and enhancing host immunity against pathogens. This review introduces the current state and trends of discovery metabolomics and reprogramming metabolomics and highlights the importance of repro- gramming metabolomics.

关键词： reprogrammingregulationmetabolomics discovery metabolomicsmetabolomics metabolic strategy metabolic