检索结果-内蒙古大学图书馆

Enhancing the TRIP Effect by Pre-Ferrite in the Hot Rolled Fe-8Mn-4Ni-3Al-0.1C Steel

ISIJ International 2025年第4期65卷 571-575页

作者： Zhang, Linfeng Matsugi, Kazuhiro Xu, Zhefeng Choi, Yongbum Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima739-8527 Japan State Key Laboratory of Metastable Materials Science and Technology Yanshan University No. 438 Hebei Street Qin Huangdao066-000 China

As is well known, reconstruction of the initial microstructure before an inter-critical annealing (IA) can optimize the final microstructure as well as improve mechanical performance. In this study, the initial microstructure with "pre-ferrite + martensite" was designed via two-stage cooling in the rolling process. The final microstructure observation showed that bimodal size distributed austenite and double morphologies of austenite. Moreover, lath-shaped austenite existed in the martensitic matrix;blocky austenite occurred at the boundaries of pre-ferrite. According to the numerical simulations of the IA process, blocky austenite tended to be more stable with smaller size and higher Mn concentrations than lath-shaped austenite. The characteristics of austenite were similar at different IA temperatures, but the lower IA temperatures, the smaller size of austenite. An excellent combination of strength (1 308 MPa) and ductility (34%) was obtained at 928 K, which was ascribed to a positive TRIP effect induced by the austenite with a large stability gradient. © 2025 The Iron and Steel Institute of Japan.

关键词： Ductility

来源：评论

学校读者我要写书评

暂无评论

Design,synthesis and biological evaluation of Leu_(10)-teixobactin analogues

引用

Chinese Chemical Letters 2025年第4期36卷 157-161页

作者： Yanye Fan Jingjing Chen Bichun Chen Jinyu Bai Bowen Yang Feng Liang Lijing Fang The State Key Laboratory of Refractories and Metallurgy School of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan 430081China Guangdong Key Laboratory of Nanomedicine CAS-HK Joint Lab of BiomaterialsACS Key Laboratory of Biomedical Imaging Science and SystemInstitute of Biomedicine and BiotechnologyShenzhen Institute of Advanced Technology(SIAT)Chinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China Sino-Euro Center of Biomedicine and Health Shenzhen 518024China School of Pharmacy Lanzhou UniversityLanzhou 730000China

Two thioamino acids and four fiuorinated amino acids were employed to substitute either partially or entirely the Ile_(2),Ser_(3),Ile_(6),and Ser_(7) residues of Leu_(10)-teixobactin to prepare ten analogues and the bioactivity of them was *** SAR studies revealed that Ile_(6) was tolerable for both thioamidation and fiuoridation,while Ser_(7) was identified as the most tolerable site for *** 1a demonstrated comparable or slightly improved antibacterial activity,superior protease stability compared to Leu_(10)-teixobactin,while not exhibiting obvious cytotoxicity against mammalian cells.

关键词： Leu_(10)-teixobactin Thioamidation Fluorination Antibacterial activity Protease stability

来源：评论

学校读者我要写书评

暂无评论

Geometry-Based Stochastic MIMO Channel Model for Near-Field and Far-Field Scenarios of Integrated Sensing and Communications

引用

IEEE Transactions on Vehicular technology 2025年第5期74卷 6928-6940页

作者： Jin, Yunwei He, Ruisi Ai, Bo Yuan, Yuan Niu, Yong Zhang, Haoxiang Beijing Jiaotong University State Key Laboratory of Advanced Rail Autonomous Operation School of Electronics and Information Engineering Frontiers Science Center for Smart High-speed Railway System Beijing100044 China Ministry of Industry and Information Technology China Academy of Industrial Internet Beijing100804 China

Integrated sensing and communication (ISAC) has become a promising technology in current sixth-generation (6G) wireless communications due to its ability to support both communication and sensing. Existing works regarding ISAC channels mainly focus on far-field propagation conditions based on plane wave assumption. However, with the deployment of ultra-massive multiple-input multiple-output (MIMO), the far-field assumption may no longer hold, as the communication and sensing propagation distances distances may be comparable to the array aperture size. To address this issue, we propose a three-dimensional MIMO channel model that simultaneously considers near-field and far-field propagation conditions in ISAC environments. Additionally, we distinguish the communication and sensing propagation environments by employing different effective scatterer distributions. In the model, the sensing channel is divided into target sensing and environmental sensing components, whereas the communication channel is divided into line-of-sight and non-line-of-sight components. The weighted sum of each component in communication and sensing channels results in accurate channel representations. Based on the proposed model, we derive and thoroughly investigate space-time-frequency correlation function, normalized absolute error function, and channel capacity. A key observation is that the channel correlation strongly depends on scatterer distribution. In certain conditions, the sensing channel can effectively capture the behavior of the communication channel. Error function results indicate that the proposed channel model achieves fairly high accuracy in ultra-massive MIMO scenarios. These findings provide essential support for the development of ISAC systems in future 6G wireless communications. © 1967-2012 IEEE.

关键词： Stochastic systems

来源：评论

学校读者我要写书评

暂无评论

Edge-Driven Industrial Computing Power Networks: Digital Twin-Empowered Service Provisioning by Hybrid Soft Actor-Critic

引用

IEEE Transactions on Vehicular technology 2025年第5期74卷 8095-8109页

作者： Zhang, Long Song, Deng-Ao Zhang, Hongliang Tian, Ni Zhuang, Zirui Niyato, Dusit Han, Zhu Hebei University of Engineering School of Information and Electrical Engineering Handan056038 China Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Beijing100871 China Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing100876 China Nanyang Technological University College of Computing and Data Science 639798 Singapore University of Houston Department of Electrical and Computer Engineering HoustonTX77004 United States Kyung Hee University Department of Computer Science and Engineering Seoul446-701 Korea Republic of

With the proliferation of data-intensive industrial applications, the collaboration of computing powers among standalone edge servers is vital to provision such services for smart devices. In this paper, we propose an edge-driven industrial computing power network (CPN) by orchestrating the computing and network resources of edge servers through the centralized resource scheduling and decentralized task computing. However, efficient task offloading and collaborative processing is challenging, which requires higher degrees of network automation and intelligence. Therefore, we incorporate digital twins (DTs) into the edge-driven CPN architecture, where the DTs are created as the digital replicas to assist both the computation offloading and collaborative processing. A joint optimization problem of the computing power assignment, service association, task partition, and transmit power control is formulated for maximizing the system average weighted utility. Due to the temporal-spatial variability of tasks and the resulted dynamic environment, we transform the original problem as a Markov decision process aiming at maximizing the long-term average weighted utility. To efficiently handle the high-dimensional discrete-continuous action space, a hybrid soft actor-critic based deep reinforcement learning algorithm is developed for optimizing the joint design. Simulation results validate the superiority of our proposed algorithm over the benchmarks, showing the significant gains obtained by integrating DTs into the edge-driven CPN. © 1967-2012 IEEE.

关键词： Markov processes

来源：评论

学校读者我要写书评

暂无评论

Joint Signal Adaptive Modulation Recognition and Radio Frequency Fingerprinting Based on Multi-task Learning 14th

Joint Signal Adaptive Modulation Recognition and Radio Freq...

引用

14th EAI International Conference on Wireless and Satellite Systems, WiSATS 2024

作者： Li, Zhuo He, Zhongqiu Xu, Congan Zhang, Wei Zha, Haoran Wang, Yu Tang, Zeyu Harbin Engineering University Harbin150001 China Naval Aviation University Yantai26400 China Advanced Technology Research institute Beijing institute of Technology Jinan250300 China National Key Laboratory of Electromagnetic SpaceSecurity Sichuan Chengdu610036 China Nanjing University of Posts and Telecommunications NanJing210003 China

ISBN: (纸本)9783031861956

Radio Frequency Fingerprinting Identification (RFFI) leverages inherent discrepancies in radiation source hardware, which are challenging to mimic and counterfeit. This attribute enhances the security of wireless networks and ensures the protection of data privacy, vital for secure communications. Inherent challenges such as channel fading and frequency drift affect radio signals. This paper explores the synergy between Automatic Modulation Recognition (AMR) and RFFI by employing a multi-label dataset to strategically influence the relationship between signal labels and individual radiation sources. We propose an advanced multi-gate mixture-of-experts convolutional neural network model, the MMOE-CNN-Transformer, which operates within a multi-task soft sharing framework. Our empirical results reveal that this model significantly enhances RFFI classification accuracy, particularly at a 0dB signal-to-noise ratio, outperforming traditional single-task learning (STL) approaches and surpassing the efficacy of hard sharing architectures, exemplified by the Shared-Bottom model. This study underscores the potential of integrating sophisticated neural network architectures in enhancing the robustness and precision of radio frequency identification systems. © ICST Institute for Computer Sciences, Social Informatics and Telecommunications engineering 2025.

关键词： Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

A universal approach to high-performance thermoelectric module design for power generation (vol 9, 101818, 2025)

引用

JOULE 2025年第4期9卷

作者： Cheng, Jinxuan Xue, Wenhua Zhang, Tianyu Li, Xiaofang Zhu, Yichen Yin, Li Yao, Honghao Fu, Zixuan Wu, Longzhi Chen, Chen Zhao, Peng Ma, Xiaojing Jiang, Feng Wang, Xiaodong Li, Mingyu Mao, Jun Wang, Yumei Cao, Feng Zhang, Qian School of Materials Science and Engineering and Institute of Materials Genome & Big Data Harbin Institute of Technology Shenzhen 518055 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Science Beijing 100190 China School of Science Harbin Institute of Technology Shenzhen 518055 China Sauvage Laboratory for Smart Materials School of Materials Science and Engineering Harbin Institute of Technology Shenzhen 518055 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin 150001 China School of Physical Sciences Great Bay University Dongguan 523000 China Institute of Special Environments Physical Sciences Harbin Institute of Technology Shenzhen 518055 China Beijing Branch of Songshan Lake Materials Laboratory Dongguan 523808 China

Thermoelectric modules fabricated by traditional welding fall short of achieving optimal conversion efficiencies, primarily due to performance degradation of materials at high temperatures, severe elemental diffusion, and residual thermal stress at the interface. Transient liquid phase bonding enables the realization of joints with high-melting-point compounds at low bonding temperatures, providing a promising solution for achieving "low-temperature bonding and high-temperature service." Owing to the low eutectic point of the solder and high melting points of compounds, we optimize the design of a germanium-telluride-based module at 533 K, which is successfully applied at the hot-side temperature of 773 K. Attributed to high-performance materials and reliable joints, the module realizes a high conversion efficiency of ∼15.1% and remains stable throughout 150 h of service. By adopting the same approach, the low- (Bi2Te3) and high-temperature (half-Heusler) modules are assembled. We provide a promising and general route for the assembly of full-temperature-range thermoelectric devices.

关键词： transient liquid phase bonding thermoelectric module intermetallic compounds GeTe

来源：评论

学校读者我要写书评

暂无评论

Unlocking Spatio-Temporal Flexibility of Data Centers in Multiple Regional Peer-to-Peer Energy Transaction Markets

引用

IEEE Transactions on Power Systems 2025年

作者： Jin, Tianyu Bai, Linquan Yan, Mingyu Chen, Xinyu Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan430074 China University of North Carolina at Charlotte William States Lee College of Engineering CharlotteNC28223 United States

Recently, the growth of distributed energy resources (DERs) has aroused peer-to-peer (P2P) energy transaction. With abundant flexibility of shifting computational tasks, data centers could participate in the P2P energy transaction market. However, the revenue that one data center receives through participating in regional P2P markets may conflict with that of the whole company owning several geographical data centers. Furthermore, the market clearing would be more complex after considering the latency characteristics of data centers and privacy protection in P2P transactions. This paper proposes an integrated multiple regional P2P energy transaction (MRPET) model, unlocking both the spatial and temporal flexibility of data centers in P2P trading. The detailed models of data centers, especially considering the total delay in processing tasks, are constructed, as well as several operational constraints of prosumers and P2P energy transaction. A two-stage algorithm based on Alternating Direction Method of Multipliers (ADMM) is proposed for joint clearing of the MRPET markets. The proposed models and algorithm are examined in test systems and the results show that more renewable generation could be locally consumed with the re-dispatch of multiple data centers. Reduced costs are achieved for both the data center company and prosumers. The case study also analyzes the impact of task variation and delay cost on the schedule of data centers and market clearing. © 1969-2012 IEEE.

关键词： Commerce

来源：评论

学校读者我要写书评

暂无评论

Integrated Mini-Pillar Platform for Wireless Real-Time Cell Monitoring

引用

Research 2025年第1期2024卷 815-822页

作者： Yong Luo Yongchao Song Jing Wang Tailin Xu Xueji Zhang Synthetic Biology Research Center The Institute for Advanced Study (IAS)Shenzhen UniversityShenzhenGuangdong 518060P.R.China Beijing Key Laboratory for Bioengineering and Sensing Technology University of Science and Technology BeijingBeijing 100083P.R.China Research Center for Intelligent and Wearable Technology College of Textiles and ClothingState Key Laboratory of Bio-Fibers and Eco-TextilesQingdao UniversityQingdao 266071P.R.China School of Biomedical Engineering Shenzhen University Health Science CenterShenzhen UniversityShenzhenGuangdong 518060P.R.China

Cell culture as the cornerstone of biotechnology remains a labor-intensive process requiring continuous manual oversight and substantial time *** this work,we propose an integrated mini-pillar platform for in situ monitoring of multiple cellular metabolism processes,which achieves media anchoring and cell culture through an arrayed mini-pillar *** assembly of polyaniline(PANI)/dendritic gold-modified microelectrode biosensors exhibits high sensitivity(63.55 mV/pH)and excellent interference resistance,enabling real-time acquisition of biosensing *** successfully employed such integrated devices to real-time measuring pH variations in multiple cells and real-time monitoring of cell metabolism under drug interventions and to facilitate in situ assisted cultivation of 3-dimensional(3D)cell *** mini-pillar array-based cell culture platform exhibits excellent biosensing sensitivity and real-time monitoring capability,offering considerable potential for the advancement of biotechnology and medical drug development.

关键词： situ monitoring wireless real time cell monitoring cell culture media anchoring cellular metabolism processes integrated mini pillar platform

来源：评论

学校读者我要写书评

暂无评论

One-step solvothermal preparation of Fe-doped Ni_(0.85)Se/NF:An efficient catalyst for the oxygen evolution reaction

引用

ChemPhysMater 2025年第1期4卷 78-85页

作者： Longqi Zhu Runze Wang Chen Wang Shuhan Yang Haizhen Liu Bo Xing Honghui Cheng Kuikui Wang Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern TextileGrowing Basis for State Key LaboratoryCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsGuangxi UniversityNanning 530004China National Engineering Laboratory of Circular Economy Sichuan University of Science and EngineeringZigong 643000China School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou UniversityChangzhou 213164China

Metal-cation doping is a fundamental strategy for enhancing catalyst ***-doped Ni_(0.85)Se/NF(Fe-Ni_(0.85)Se/NF)nanoparticles were prepared at 80°C via Fe^(2+)etching *** addition of Fe altered the coordination environment of the Ni species along with the catalyst's morphology,creating additional active ***,the synergistic interaction between the bimetallic components augmented the built-in activity and accelerated reaction *** Fe-Ni_(0.85)Se/NF electrocatalysts demonstrated remarkable catalytic activity for the oxygen evolution reaction(OER),with an acceptable overpotential of 276 mV and a Tafel slope of 58.1 mV dec^(−1)at 100 mA cm^(−2).Moreover,they demonstrated exceptional *** situ Raman and X-ray photoelectron spectroscopy(XPS)analyses showed that the excellent OER performance stemmed from the reconstruction-induced hydroxyl *** study offers a novel approach for streamlining the synthesis procedures and reducing the experimental costs for developing high-efficiency electrocatalysts.

关键词： Doping Selenylation Hydrothermal reaction Oxygen evolution reaction Electrocatalysts

来源：评论

学校读者我要写书评

暂无评论

Observation of multiple surface states in naturally cleavable chiral crystal PdSbSe

引用

Physical Review Materials 2025年第3期9卷 L031201-L031201页

作者： Zhicheng Jiang Zhengtai Liu Chenqiang Hua Xiangqi Liu Yichen Yang Jianyang Ding Jiayu Liu Jishan Liu Mao Ye Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology University of Science and Technology of China Hefei 230026 China National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology (SIMIT) Chinese Academy of Sciences Shanghai 200050 China Zhejiang Province Key Laboratory of Quantum Technology and Device Department of Physics Zhejiang University Hangzhou 310027 China State Key Lab of Silicon Materials School of Materials Science and Engineering Zhejiang University Hangzhou 310027 China Beihang Hangzhou Innovation Institute Yuhang Xixi Octagon City Yuhang District Hangzhou 310023 China School of Physical Science and Technology ShanghaiTech University Shanghai 200031 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China

Chiral multifold fermions in solids exhibit unique band structures and topological properties, making them ideal for exploring fundamental physical phenomena related to nontrivial topology, chirality, and symmetry breaking. However, the challenge of obtaining clean, flat surfaces through cleavage has hindered the investigation of their unique electronic states. In this study, we utilize high-resolution angle-resolved photoemission spectroscopy and density functional theory calculations to investigate the low-energy electronic structure of the cleavable single-crystal PdSbSe. Our combined experimental and theoretical analysis reveals the presence of multifold-degenerate fermions within this chiral crystal. We also observe multiple chiral Fermi arc surface states and spin-splitting behavior in the associated bulk bands. These findings provide unique insights into chiral, multifold fermionic states in easily cleavable crystals and offer a robust platform for further research into their unique electronic properties and potential applications in novel electronic devices.

关键词： Photoelectron spectroscopy

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：