检索结果-内蒙古大学图书馆

DLLP: a deep learning-based layer prediction network for three-dimensional fluorescence microscopy

Optics Express 2025年第9期33卷 20063-20081页

作者： Zhang, Runnan Li, Yifei Gong, Ying Hao, Xiang Tu, Shijie Feng, Ruili Gu, Zhenhong Wang, Wenbao Li, Zhifei Lu, Wei He, Mubin Chu, Jinghui School of Electrical and Information Engineering Tianjin University Tianjin 300072 China State Key Laboratory of Extreme Photonics and Instrumentation Centre for Optical and Electromagnetic Research College of Optical Science and Engineering International Research Center for Advanced Photonics Zhejiang University Hangzhou 310058 China Guangdong-Hong Kong-Macau Institute of CNS Regeneration (GHMICR) Jinan University Guangdong Province Guangzhou 510632 China Nuohai Life Science (Shanghai) Co. Ltd. Shanghai 201615 China Beijing Totop Technology Co. Ltd. Beijing 100043 China

High light-throughput microscopy stands as a potent tool in biological research, spanning applications from cell functional analysis to brain science. The pursuit of achieving elevated light throughput alongside rapid imaging speeds without the need for additional optical hardware has emerged as a pivotal focus in biomedical research. To address this challenge, we introduced a cutting-edge framework known as the deep learning-based layer predictor (DLLP). By integrating a convolutional neural network (CNN) with the inter-layer dynamic and morphological attention mechanism (IDMA) within a transformer architecture, DLLP employed a tomographic prediction technique capable of reducing the number of scanning layers in three-dimensional (3D) microscopy by over 70%, while maintaining light throughput and image fidelity. The DLLP framework significantly improved imaging speed and quality through two complementary strategies: robust unsupervised denoising to effectively mitigate electrical noise in the xy-plane caused by faster imaging and sparse recovery along the Z-axis to ensure high-quality 3D reconstruction without compromising spatial resolution. The DLLP framework has demonstrated consistent performance across various microscopy modalities, including stimulated emission depletion (STED) microscopy, fluorescence modulation optical sectioning tomography (FMOST) microscopy, multi-photon microscopy, and light-sheet microscopy, surpassing traditional methods and existing deep learning approaches in terms of accuracy and image quality. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Confocal microscopy Fluorescence microscopy Imaging techniques Scanning microscopy Spatial resolution Three dimensional microscopy

来源：评论

学校读者我要写书评

暂无评论

Design, Test and Shimming of a 1.5 T Head-Only MRI Superconducting Magnet

引用

IEEE Transactions on Applied Superconductivity 2025年

作者： Song, Yunxing Cheng, Zhiwen Jiang, Xunhuang Li, Jianglan Li, Liang Wang, Qiuliang Huazhong University of Science and Technology Wuhan National High Magnetic Field Center Wuhan430074 China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan430074 China Chinese Academy of Sciences Institute of Electrical Engineering Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

As the core component of magnetic resonance imaging (MRI) system, superconducting magnet provides a high-intensity, stable and homogeneous magnetic field background for the system. The strength, stability, and homogeneity of the magnetic field directly affect the imaging quality of MRI. This paper presents the design, test and shimming of a 1.5 T Head-Only MRI superconducting magnet developed by the Wuhan National High Magnetic Field Center (WHMFC). The magnet consists of 7 primary coils and 2 shielding coils and is operated at an operating current of 510 A using liquid helium (LHe) bath cooling. The test has shown that the magnet reached the target field of 1.5 T directly after the first ramp-up without any quench. Under the magnetic field of 1.5 T, the magnetic field decay rate of the magnet is less than 0.02 ppm/hr. After 3 rounds of passive shimming, the magnet achieves a magnetic field inhomogeneity of 2.89 ppm over an imaging sphere within a diameter of 26 cm. The successful development of this magnet provides practical engineering validation for the lightweight technology of head-only MRI superconducting magnets. © 2002-2011 IEEE.

关键词： Superconducting magnets

来源：评论

学校读者我要写书评

暂无评论

Study on Gas Production Characteristics of Thermally Aged Composite Insulator Core Rods Under Vacuum Conditions 1st

Study on Gas Production Characteristics of Thermally Aged Co...

引用

1st Electrical Artificial Intelligence Conference, EAIC 2024

作者： Xiaogang, Li Dandan, Zhang Ji, Wang Kexin, Shi Zhao, Chen Xiang, Cai Gaoli, Song Zhiyu, Wan Henan Jiuyu EPRI Electric Power Technology Co. Ltd. Zhengzhou450052 China School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China Ministry of Education Wuhan430074 China State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and Technology Wuhan430074 China Disaster Prevention and Reduction Center State Grid Hunan Electric Power Company Limited Changsha410000 China

ISBN: (纸本)9789819640669

Given the extensive utilization of composite insulators in electricity systems, the unresolved decay-like fragmentation of the composite insulator is of paramount importance in the preservation of the system’s functionality in daily life. The core rod’s gas production during the thermal aging process has been verified, which may result in the silicone rubber sheath deforming and potentially rupturing. This study has created an innovative vacuum thermal aging experiment platform that enables the conduct of thermal aging tests under vacuum conditions, thereby further elucidating the process of gas generation and its consequential impact. In addition, this platform is capable of accurately monitoring and recording the gas pressure value in the heating chamber in real time, as well as gathering the gases generated by the thermal degradation of composite insulator core rods. The experimental results elucidate the characteristics of gas production, with a particular emphasis on the thermal press. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Gas fuel manufacture

来源：评论

学校读者我要写书评

暂无评论

An Investigation into the Products of Thermally Aged Composite Insulator Core Rods 1st

An Investigation into the Products of Thermally Aged Composi...

引用

1st Electrical Artificial Intelligence Conference, EAIC 2024

ISBN: (纸本)9789819640669

Chinese regions exhibit a highly uneven distribution of substantial energy re-serves and significant electrical energy loads. The actual situation necessitates the electricity system to depend increasingly significantly on transmission lines, in which composite insulators play a vital role. Historically, conventional fractures have been well treated, but the more recent type of fracture known as decay-like fracture is currently being investigated. In the event of a fracture, mishaps such as transmission line dropping may arise, leading to the termination of power supply and failure to restore it promptly. In order to effectively prevent the occurrence of decay-like fractures, researchers are currently endeavoring to understand the mechanism of this fracture, including its specific initiation point and the process of degradation. Drawing from prior research, heat has been identified as a reliable indicator of fracture occurrence. The objective of this work is to determine the impact of thermal stress by examining products during the process of thermal aging. Experimental trials are conducted at various temperatures for a duration of 5 h. Following testing, samples and products obtained from studies are subjected to additional observation and analysis using Fourier Transform Infrared spectroscopy (FTIR) and Gas Chromatography Mass Spectrometry (GC-MS). This work quantifies the chemical composition of the related gaseous products and compares the FTIR results of samples before and after trials to determine the changes in functional groups. Analytical findings can serve as the foundation for further investigation of the decay-like fracture mechanism, namely the process of fracture intensification. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Gas chromatography

来源：评论

学校读者我要写书评

暂无评论

Influence of n = 1 resonant magnetic perturbation on flow and turbulence towards L-H transition

引用

Nuclear Fusion 2025年第6期65卷

作者： Zhang, Y. Jiang, M. Guo, Z.B. Diamond, P.H. Guo, W.X. Xu, J.Q. Zhang, N. Wang, Z. Li, Z.J. Zhou, Y. Liang, A.S. Sun, T.F. Ke, R. Gong, S.B. He, X.X. Chen, W. Zhong, W.L. Southwestern Institute of Physics PO Box 432 Chengdu610041 China State Key Laboratory of Nuclear Physics and Technology Fusion Simulation Center School of Physics Peking University Beijing100871 China University of California San Diego San DiegoCA92093 United States International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electric and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China

The application of resonant magnetic perturbation (RMP) with toroidal mode number n = 1 on HL-3 tokamak inhibits the L-H transition at specific heating power. Following RMP application, the electron density increases in the outer plasma region (ρ > 0.85, where ρ is the normalized toroidal flux), while the electron/ion temperature decreases. Notably, the equilibrium flow shear in the edge region is substantially reduced. This reduction, combined with enhanced micro-instabilities driven by increased profile gradients, leads to enhanced turbulence levels. Consequently, the diminished flow shear becomes less effective in suppressing turbulence, providing a comprehensive explanation for the inhibited access to H-mode. Through a modified one-dimensional predator-prey model that incorporates the effects of RMP-induced radial magnetic perturbations, we have conducted a quantitative analysis of the turbulence and flow dynamics during the L-H transition process. Our results indicate that as the strength of magnetic perturbation increases, the turbulence intensity increases and edge flow shear decreases, in agreement with experimental observations. Additionally, we found that the L-H transition power threshold increases almost linearly with the square of the radial magnetic perturbation intensity. These results enhance our understanding of RMP-induced changes in edge plasma transport, providing valuable insights for optimizing the operation of future tokamaks and improving the performance of fusion reactors. © 2025 The Author(s). Published by IOP Publishing Ltd on behalf of the IAEA.

关键词： Tokamak devices

来源：评论

学校读者我要写书评

暂无评论

Reconfigurable Converter-Formed Soft Open Point- Assisted Dynamic Restoration for Distribution Systems with Cold-load Pickup

引用

IEEE Transactions on Sustainable Energy 2025年

作者： Yang, Xiaodong Li, Zihao Ding, Lijian Hu, Zhengli Fang, Hui Sun, Wei Wu, Qiuwei Wen, Jinyu Hefei University of Technology State Key Laboratory of High Efficiency and High Quality Electric Energy Conversion Hefei230009 China State Grid Anhui Ultra High Voltage Company Hefei230022 China Tsinghua University Tsinghua-Berkeley Shenzhen Institute Tsinghua Shenzhen International Graduate School Shenzhen518055 China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Wuhan430074 China

Improving the power supply resilience under extreme conditions is an important construction goal faced by modern distribution systems (DSs). In this paper, we develop a dynamic restoration framework for renewable DSs with cold-load pickup (CLPU), assisted by the reconfigurable converter-formed multi-terminal soft open point (R-SOP) to minimize the de-energized loads and renewables curtailment under extreme weather events. Traditional SOP often designed as symmetric capacity topology, which may limit the DS restoration quality by the converter capacity of symmetric SOPs. To address this, a dynamic network reconfiguration model of DSs is established that embedded with R-SOP, whose typical feature is the asymmetric converter capacity design while keeping the total port capacity unchanged compared with traditional SOP. On this basis, a multi-period distribution service restoration model is formulated integrating the converter reconfiguration of R-SOP, DS topology changes and coordinated actions of flexible resources to enhance the restoration level and improve the renewable energy utilization. Moreover, restoration strategies that ignore the CLPU phenomenon may face remarkable gap from the realistic system operating conditions. Accordingly, a frequency-constrained dynamic restoration model is proposed in a faster-timescale to respond to the CLPU and restore the DS in a reliable and adaptable manner. Numerical simulations on two modified IEEE test systems and an actual distribution system verify the effectiveness of the developed framework. © 2010-2012 IEEE.

关键词： Restoration

来源：评论

学校读者我要写书评

暂无评论

Power dependence of density limit due to plasma-wall interaction in a burning plasma

arXiv

引用

arXiv 2025年

作者： Liu, Jiaxing Zhu, Ping Escande, Dominique Franck State Key Laboratory of Advanced Electromagnetic Technology International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China Department of Nuclear Engineering and Engineering Physics University of Wisconsin-Madison MadisonWI53706 United States Aix-Marseille Université CNRS PIIM UMR 7345 Marseille France

The density limit is one of the major obstacles to achieving the desired fusion performance in tokamaks. However, the underlying physics mechanism for its recently observed power dependence in experiments has not been well understood or predicted in theory. In this work, the power dependent scalings of density limit are obtained based on the plasma-wall self-organization theory [D.F. Escande 2022 NF], which are able to match the power dependence of density limits in multiple tokamak devices. The key factors influencing the power dependence are found to be the plasma-wall sputtering and the particle confinement time. The effects of non-sputtered impurities and fusion products are further evaluated. This PWSO-density limit model is then extended to the burning plasma regime and used to predict the conditions for entering burning plasma. Copyright © 2025, The Authors. All rights reserved.

关键词： Tokamak devices

来源：评论

学校读者我要写书评

暂无评论

Research on the Boiling Heat Transfer Mechanism Under Alternating Electric Field 19th

Research on the Boiling Heat Transfer Mechanism Under Altern...

引用

19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Yang, Zhangbin Ai, Jian Wang, Yu Ruan, Lin Key Laboratory of High Density Electromagnetic Power and Systems (Chinese Academy of Sciences) Institute of Electrical Engineering Chinese Academy of Sciences Haidian District Beijing 100190 China University of Chinese Academy of Sciences Shijingshan District Beijing 100049 China China Three Gorges Construction Engineering Corporation Chengdu 610041 China Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology Qilu Zhongke Jinan 250101 China

ISBN: (纸本)9789819647996

Extensive research has investigated the enhancement of boiling heat transfer through electric fields, primarily focusing on the effects of direct current (DC) electric fields. This study seeks to deepen the understanding of the mechanisms involved in boiling heat transfer enhancement when using alternating current (AC) electric fields. By examining the deformation of bubbles in uniform electric fields and the electric potential distribution at the bubble edges, we assess the impact of electric field strength and frequency on boiling heat transfer. The variation in density and dielectric constants between the gaseous and liquid phases results in a polarization charge density at the bubble boundary, causing the bubbles to elongate in the direction of the electric field. Our findings reveal that the electric field not only induces significant bubble deformation but also facilitates bubble detachment, thereby enhancing heat transfer. Specifically, the electric field influences the diameter of detached bubbles, leading to a reduction in size and an increase in detachment frequency, which collectively contribute to improved boiling heat transfer. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Alternating Electric Field Boiling Heat Exchange Electrohydrodynamics Strengthening Mechanism

来源：评论

学校读者我要写书评

暂无评论

A Profit-Sharing Mechanism for Coordinated Power-Traffic System

arXiv

引用

arXiv 2025年

作者： Sima, Tianyu Yan, Mingyu Wen, Jianfeng Luo, Wensheng Malinowski, Mariusz State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan430074 China Department of Electrical Engineering and Electronics University of Liverpool LiverpoolL69 3GJ United Kingdom School of Electrical Engineering and Automation Harbin Institute of Technology Harbin150001 China Institute of Control and Industrial Electronics Warsaw University of Technology Warsaw Poland

During the scheduling process, the traffic network operator (TNO) and the distribution network operator (DNO) act non-cooperatively. Under the TNO's management, the distribution of charging loads may exacerbate the local supply-demand imbalance in the power distribution network (PDN), which negatively impacts the economic operation of the PDN. This paper proposes a profit-sharing mechanism based on the principle of incentive compatibility for coordinating the traffic network (TN) and the PDN to minimize the operation cost of PDN. Under this mechanism, the scheduling process of the power-traffic system is divided into two stages. At the pre-scheduling stage, the TNO allocates traffic flow and charging loads without considering the operation of the PDN, after which the DNO schedules and obtains the original cost. At the rescheduling stage, the DNO shares part of benefits of the optimal operation to the TNO to re-dispatch the EVs’ charging to obtain a more effective charging plan, thus minimize the overall cost of PDN. Then, a bilevel model is developed to simulate the operation of the power-traffic system with the proposed sharing scheme and identify the best sharing ratio. Finally, numerical results demonstrate that the PDN can achieve the minimum total cost and simultaneously the TN can also benefit from the proposed profit-sharing mechanism. © 2025, CC BY-NC-ND.

关键词： Profitability

来源：评论

学校读者我要写书评

暂无评论

Data-Efficient Synchronous Machine Winding Short Circuit Faults Diagnosis Based on Frequency Response Analysis and Active Learning

引用

IEEE Sensors Journal 2025年第11期25卷 19804-19815页

作者： Chen, Yu Zhao, Zhongyong Liu, Jiangnan Wang, Wei Yao, Chenguo Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Wuhan430074 China Southwest University College of Engineering and Technology Chongqing400716 China Yibin Academy of Southwest University Sichuang64400 China Guangzhou Power Supply Bureau of Guangdong Power Grid Co. Ltd Guangzhou510620 China Chongqing University State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing400044 China

Winding short-circuit (SC) faults are a prevalent issue in synchronous machines, and the accurate and timely identification of these faults is critical for maintaining power system stability. Current methods for inspecting synchronous machine windings often rely on periodic inspections based on human expertise. Numerous studies have explored the application of deep learning (DL) models for detecting synchronous machine winding SC faults. However, these models often exhibit excessive complexity and overlook physical overhead, leading to inefficient utilization of computational power and data resources. To address these limitations, this study proposes a dual-channel deep learning (DL) model integrated with the active learning (AL) query strategy. In this study, winding SC faults are manually simulated on a 5 kVA synchronous machine, and corresponding frequency response analysis (FRA) data are recorded. Subsequently, the proposed method is validated on the test set and benchmarked against previous studies. Experimental results demonstrate that the proposed method significantly reduces the data annotation effort and accelerates model training to the order of seconds (under 5 seconds) while maintaining satisfactory accuracy (≥ 95%). Comparative experimental results further indicate that the proposed model, requiring only 1/20th of the labeled training samples used in previous studies, achieves a substantial reduction of approximately 99.8% in both model parameters and training time. © 2001-2012 IEEE.

关键词： Synchronous machinery

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：