检索结果-内蒙古大学图书馆

10th Frontier Academic Forum of Electrical Engineering, FAFEE 2022

作者： Ma, Xin Wang, Yancheng Chen, Yue Dong, Shoulong Yao, Chenguo State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing400044 China

ISBN: (纸本)9789819934034

In order to explore the bioelectric effect of high-voltage extremely short pulse electric fields (esPEFs) on tumor cells, first, based on the finite element platform, a spherical single-cell Multiphysics model was established. Both electroporation and dielectric relaxation of the membrane are considered. The electroporation effects and Maxwell stress tensors on cell and nuclear membranes were analyzed;secondly, taking MDA-MB-231 cells as the research object, combined with fluorescent probe technology, The state change and fluorescence dissipation of its subcellular structure exposed to esPEFs were studied. The results show that high-pressure esPEFs preferentially act inside the cell, causing electroporation effect and tensile stress on the nuclear membrane;it destroys the integrity and order of the cytoskeleton, and damage the subcellular structural functions of the endoplasmic reticulum, mitochondria, and nucleus. The degree of damage is positively correlated with the pulse dose. © Beijing Paike Culture Commu. Co., Ltd. 2023.

关键词： Probes

来源：评论

学校读者我要写书评

暂无评论

A NOVEL TOPOLOGY INTERGRATING DC FAULT ISOLATION AND AC/DC FAULT RIDE-THROUGH 12

A NOVEL TOPOLOGY INTERGRATING DC FAULT ISOLATION AND AC/DC F...

引用

12th Annual Meeting of CSEE Study Committee of HVDC and Power Electronics, HVDC 2023

作者： Ding, Shuai Yang, Ming Sima, Wenxia Tao, Yuan Sun, Potao the State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing400044 China

ISBN: (纸本)9781839539848

Bipolar modular multilevel converter (MMC) based multi-terminal flexible DC transmission system (MTDC) has been the preferred choice for the regional sharing of wind power. The dc fault isolation and dc fault ride-through during dc faults is one of the greatest challenges, the methods used to interrupt fault current and dissipate surplus wind power are indispensable. In this article, a novel topology with the cooperation of control strategy is proposed, which achieves dc fault isolation and dc fault ride-through under the dc faults occur on the dc transmission line (DCTL) and ac fault ride-through under the ac fault occurs on the grid-side MMC (GSMMC) ac network. Based on the simulation of four-terminal MTDC, it can be verified that the proposed topology can reduce 20 % utilization of power electronic devices to ensure the operation of the healthy area under the fault area isolation. © The Institution of Engineering & technology 2023.

关键词： Topology

来源：评论

学校读者我要写书评

暂无评论

Study of Lentivirus Inhibition by Sub-Microsecond High-Voltage Pulsed Electric Field 10th

Study of Lentivirus Inhibition by Sub-Microsecond High-Volta...

引用

10th Frontier Academic Forum of Electrical Engineering, FAFEE 2022

作者： Wang, Lili Yu, Liang Liu, Hongmei Dong, Shoulong Yao, Chenguo State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University Chongqing400044 China

ISBN: (纸本)9789819934034

The effect of high voltage pulsed electric field on the electroporation of plant and animal cells has been widely used in tumor ablation, food sterilization, and biodiesel extraction, but the effect of pulsed electric field on pathogenic virus without intact cell structure has not been effectively studied. In this paper, we conducted a preliminary study on the effect of sub-microsecond pulsed electric field on virus, using 1000 sub-microsecond pulses of 20 kV/cm with different pulse width (200/500/1000 ns) at a heavy frequency of 10 Hz to treat lentivirus. Besides, we also examined the temperature and pH changes of virus suspension before and after the electric treatment, excluding the effect of temperature and electrolysis. The effect of lentivirus infection of HEK392T was studied comparatively by fluorescence microscopy and flow cytometry. The results of the experiment show that the temperature during the electric treatment and pH before and after the treatment do not change significantly. The sub-microsecond high-voltage pulsed electric field can significantly inhibit the infectivity of lentivirus by disrupting its structural integrity, and the inhibition effect is positively correlated with pulse width. © Beijing Paike Culture Commu. Co., Ltd. 2023.

关键词： Viruses

来源：评论

学校读者我要写书评

暂无评论

A Comprehensive and Efficient Instruction-level Testing Method for Processor 17

A Comprehensive and Efficient Instruction-level Testing Meth...

引用

17th IEEE International Conference on Solid-state and Integrated Circuit technology, ICSICT 2024

作者： Yang, Zixin Wei, Zhichao Luo, Huanlin Wang, Jian Lai, Jinmei School of Microelectronics Fudan University State Key Laboratory of ASIC and System Shanghai201203 China Shanghai Academy of Spaceflight Technology Shanghai201109 China

ISBN: (纸本)9798350361834

Testing of the processor is crucial, which necessitates a comprehensive test set to ensure an efficient and thorough coverage. We herein propose an Equivalence Class Partitioning and Boundary Value Analysis (ECP-BVA) constrained instruction stream generation method on coverage-guided fuzzing (CGF). The updated ECP-BVA constraints mutate the instruction field to maximize the coverage metrics. The accelerated coverage-guided fuzzing skipes redundant instructions to improve the testing efficiency. An efficient test set is built by fuzzing and the experimential results indicate that our method can maximize coverage metrics close to 100% in a short time, thereby ensuring a comprehensive and efficient coverage for processor testing. © 2024 IEEE.

关键词： Equivalence classes

来源：评论

学校读者我要写书评

暂无评论

Topology Optimization for Harmonic Excitation Structures with Minimum Length Scale Control Using the Discrete Variable Method

引用

Computer Modeling in Engineering & Sciences 2023年第6期135卷 1941-1964页

作者： Hongliang Liu Peijin Wang Yuan Liang Kai Long Dixiong Yang Key Laboratory of Liaoning Province for Composite Structural Analysis of Aerocraft and Simulation College of Aerospace EngineeringShenyang Aerospace UniversityShenyang110136China State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsDalian University of TechnologyDalian116023China State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing102206China

Continuumtopology optimization considering the vibration response is of great value in the engineering structure *** aimof this studyis toaddress the topological designoptimizationof harmonic excitationstructureswith minimumlength scale control to facilitate *** topology design based on discrete variables is proposed to avoid localized vibration modes,gray regions and fuzzy boundaries in harmonic excitation topology *** topological design model and sensitivity formulation are *** requirement of minimum size control is transformed into a geometric constraint using the discrete ***,thin bars,small holes,and sharp corners,which are not conducive to the manufacturing process,can be eliminated from the design *** present optimization design can efficiently achieve a 0–1 topology configuration with a significantly improved resonance frequency in a wide range of excitation ***,the optimal solution for harmonic excitation topology optimization is not necessarily symmetric when the load and support are symmetric,which is a distinct difference fromthe static optimization ***,one-half of the design domain cannot be selected according to the load and support *** examples are presented to demonstrate the effectiveness of the discrete variable design for excitation frequency topology optimization,and to improve the design manufacturability.

关键词： Discrete variable topology optimization harmonic excitation minimumlength scale control geometric constraint manufacturability

来源：评论

学校读者我要写书评

暂无评论

A Power-to-Gas Model Considering the Waste Heat Compensation for Power system Application 3

A Power-to-Gas Model Considering the Waste Heat Compensation...

引用

2023 3rd International Conference on Energy, Power and Advanced Thermodynamic systems, EPATS 2023

作者： Hu, Bohan Huang, Zhi Lin, Danning Lei, Xingyu State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing400044 China

Power-to-Gas (P2G) technology is a crucial enabler for the new energy-based power system. In this study, a daily economic dispatch model is proposed for the power system operation with P2G units. It incorporates collecting and utilizing waste heat generated by the methanation plant and connected with the Proton exchange membrane (PEM) electrolysis. The simulation results demonstrate that the proposed model achieves a 1.1% decrease in power system operation costs compared to the conventional P2G model. This paper provides valuable insights into the power systems optimization with P2G units for more efficient and cost-effective renewable energy integration into the power grid. © Published under licence by IOP Publishing Ltd.

关键词： Waste heat

来源：评论

学校读者我要写书评

暂无评论

Effect of Voltage Rise Rate on Partial Discharge Characteristics of BOPP Film Under Positive Nanosecond Pulse Voltage

Effect of Voltage Rise Rate on Partial Discharge Characteris...

引用

2023 IEEE Pulsed Power Conference, PPC 2023

作者： Chen, Yong Mi, Yan Liu, Canhui Zhu, Yakui Liao, Ruijin Chongqing University State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing400044 China

ISBN: (纸本)9798350332339

This paper aims to study the impact of slew rate on partial discharge (PD) characteristics of BOPP film under nanosecond pulse voltage. To achieve this, experiments were conducted to detect partial discharges in BOPP films subjected to high rise rate (slew rate) nanosecond pulse voltages. The study found that the repetitive partial discharge inception voltage (RPDIV) initially increased and then reached a stable level as the rise time increased. Additionally, the PD amplitude and the number of RSD increased with higher slew rates, while the PD time-lag decreased gradually. Similarly, for FSD, the PD amplitude, PD numbers, and PD time-lag all increased as the slew rate increased. Furthermore, the study observed that when the slew rate was below 50 V/ns, the PD characteristics exhibited rapid changes with increasing slew rate. However, when the slew rate exceeded 50 V/ns, the PD characteristics showed slower variations as the slew rate increased. These presented results contribute to a better understanding of the behavior of PD in film capacitors under nanosecond pulse voltage with high slew rates. They also provide valuable guidance for evaluating the insulation performance of film capacitors. © 2023 IEEE.

关键词： Partial discharges

来源：评论

学校读者我要写书评

暂无评论

Low-overhead fault-tolerant error correction scheme based on quantum stabilizer codes

引用

Chinese Physics B 2022年第4期31卷 143-150页

作者： Xiu-Bo Chen Li-Yun Zhao Gang Xu Xing-Bo Pan Si-Yi Chen Zhen-Wen Cheng Yi-Xian Yang Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing 100876China School of Information Science and Technology North China University of TechnologyBeijing 100144China Advanced Cryptography and System Security Key Laboratory of Sichuan Province Chengdu 610025China

Fault-tolerant error-correction(FTEC)circuit is the foundation for achieving reliable quantum computation and remote ***,designing a fault-tolerant error correction scheme with a solid error-correction ability and low overhead remains a significant *** this paper,a low-overhead fault-tolerant error correction scheme is proposed for quantum communication ***,syndrome ancillas are prepared into Bell states to detect errors caused by channel *** propose a detection approach that reduces the propagation path of quantum gate fault and reduces the circuit depth by splitting the stabilizer generator into X-type and ***,a syndrome extraction circuit is equipped with two flag qubits to detect quantum gate faults,which may also introduce errors into the code block during the error detection ***,analytical results are provided to demonstrate the fault-tolerant performance of the proposed FTEC scheme with the lower overhead of the ancillary qubits and circuit depth.

关键词： fault-tolerant error correction quantum stabilizer code gate fault quantum circuit

来源：评论

学校读者我要写书评

暂无评论

Junction Temperature Measurement Method for SiC MOSFET Based on Charge Variation 17th

Junction Temperature Measurement Method for SiC MOSFET Based...

引用

17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Wu, Shuo Sun, Pengju Li, Kaiwei State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University Chongqing400044 China

ISBN: (纸本)9789819903566

Reliable measurement of the junction temperature Tj is important for the safe operation and reliability assessment of power semiconductors. In this paper, a junction temperature measurement method based on charge variation is proposed for SiC MOSFET half-bridge circuit. Based on the physical properties of the wide bandgap semiconductor and the reverse recovery characteristics of the body diode, the relationship between the charge variation during each stage of the switching transient and the junction temperature of the corresponding device is theoretically analyzed. Then, a dynamic switching characteristic test platform is built for verification. The effects of load current, bus voltage, and gate resistance on the measurement results are evaluated. Finally, the online feasibility of the proposed method is discussed through the developed charge detection circuit, and it is compared with existing temperature-sensitive electrical parameters. The results show that the proposed method has high linearity, good sensitivity, and can reflect the temperature information of both devices from the same bridge arm simultaneously. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Junction temperature

来源：评论

学校读者我要写书评

暂无评论

A Metal Surface Damage Recognition Method For Augmented Reality Assisted Maintenance systems

A Metal Surface Damage Recognition Method For Augmented Real...

引用

2024 IEEE International Conference on Industrial Engineering and Engineering Management, IEEM 2024

作者： Wu, Hongduo Zhou, Dong Guo, Ziyue Wang, Yan Zhou, Qidi School of Reliability and System Engineering Beihang University Beijing China State Key Laboratory of Virtual Reality Technology and Systems Beihang University Beijing China

ISBN: (纸本)9798350386097

The small damages such as cracks and scratches on the surface of aerospace products pose a serious threat to the safety of life and property, and manual visual inspection is prone to omissions, leaving great safety hazards. Using augmented reality (AR) assisted maintenance systems to assist visual inspection is one of the effective solutions. However, the limitations of computing power in augmented reality devices and the real-time requirements of augmented reality pose significant challenges to small-scale object detection algorithms. Therefore, this paper proposed a metal surface damage recognition method for augmented reality assisted maintenance system. Firstly, for the appearance characteristics of surface damage in the steel image database NEU-CLS, the histogram equalization was employed for image enhancement to improve image quality. Afterwards, a SURF + K-means + Bag-of-Features + the-number-of-feature-points feature extraction and dimensionality reduction method was proposed to improve recognition efficiency while ensuring the robustness of the method. Finally, adaptive boosting learning framework was utilized to construct a surface damage recognition model which has good accuracy and efficiency for common metal surface damages. © 2024 IEEE.

关键词： Dimensionality reduction

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：