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Journal of Materiomics 2023年第1期9卷 90-98页

作者： renchao hu Desheng Pan Xinwei Xu Bin Xiao Hong Wang Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen518055China Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices&Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and TechnologyShenzhen518055China

Multi-band microwave absorption is becoming ubiquitous owing to the increasingly complex electromagnetic environment driven by the diversity of electronic ***,research on efficient electromagnetic absorbers applicable in both centimeter-wave and millimeter-wave bands to address the electromagnetic interference in 5G networks is highly *** this study,Fe_(x)(Co_(y)Ni_(1-y))_(100-x)particles with two phases(face-centered cubic(FCC)and hexagonal close-packed(HCP))were synthesized and were found to exhibit excellent electromagnetic wave *** phase with high magnetocrystalline anisotropy was introduced into FCC phase Fe_(x)(Co_(y)Ni_(1-y))_(100-x),resulting in natural resonances in multi-band *** microwave absorption properties in ultra-wide bandwidth ranging from 6.9 to 39.5 GHz were *** maximum reflection loss(RL)of the Fe_(23)(Co_(0.5)Ni_(0.5))77 composite film reached-50 *** a remarkable absorption performance is attributed to the synergetic effects of the multiple natural resonances generated by the coexistence of HCP and FCC phases in Fe23(Co0.5Ni0.5)***,this work is promising for the future design of high-performance microwave absorbing materials in a wide bandwidth.

关键词： Submicron particles Microwave absorber Anisotropy Permeability Microstructures

Thin and Flexible Fe–Si–B/Ni–Cu–P Metallic Glass Multilayer Composites for Efficient Electromagnetic Interference Shielding

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Thin and Flexible Fe–Si–B/Ni–Cu–P Metallic Glass Multila...

Designing Electronic Structures of Multiscale Helical Converters for Tailored Ultrabroad Electromagnetic Absorption

第十一届中国钢铁年会

作者： Zhang Jijun Li Jiawei Tan Guoguo hu renchao Wang Junqiang Chang Chuntao Wang Xinmin Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology & EngineeringChinese Academy of Sciences Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences University of Chinese Academy of Sciences

Thin and flexible materials that can provide efficient electromagnetic interference（EMI） shielding are urgently needed, especially if they can be easily processed and withstand harsh ***, layer structured Fe–Si–B/Ni–Cu–P metallic glass composites have been developed by simple electroless plating Ni–Cu–P coating on commercial Fe–Si–B metallic *** 0.1-millimeter-thick composite shows EMI shielding effectiveness of 40 dB over the X-band frequency range, which is higher than that of traditional metals, metal oxides and their polymer composites of larger *** of the applied electromagnetic waves（EMWs） are proved to be absorbed rather than bounced *** performance originates from the combination of superior permeability, excellent electrical conductivity, and multiple internal reflections from multilayer *** addition, the flexible composites also exhibit good corrosion resistance, high thermal stability, and excellent tensile strength, making them suitable for EMI shielding in harsh chemical or thermal environments.

关键词： Fe-based metallic glasses electroless Ni–Cu–P multilayer composites electromagnetic shielding harsh environments

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Nano-Micro Letters 2025年第1期17卷 439-455页

作者： Zhaobo Feng Chongbo Liu Xin Li Guangsheng Luo Naixin Zhai Ruizhe hu Jing Lin Jinbin Peng Yuhui Peng renchao Che Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle School of Environmental and Chemical EngineeringNanchang Hangkong UniversityNanchang 330063People’s Republic of China School of Physics and Materials Nanchang UniversityNanchang 330031People’s Republic of China Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering and TechnologyFudan UniversityShanghai 200438People’s Republic of China

Atomic-scale doping strategies and structure design play pivotal roles in tailoring the electronic structure and physicochemical property of electromagnetic wave absorption(EMWA)***,the relationship between configuration and electromagnetic(EM)loss mechanism has remained ***,drawing inspiration from the DNA transcription process,we report the successful synthesis of novel in situ Mn/N co-doped helical carbon nanotubes with ultrabroad EMWA *** calculation and EM simulation confirm that the orbital coupling and spin polarization of the Mn–N4–C configuration,along with cross polarization generated by the helical structure,endow the helical converters with enhanced EM *** a result,HMC-8 demonstrates outstanding EMWA performance,achieving a minimum reflection loss of−63.13 dB at an ultralow thickness of 1.29 *** precise tuning of the graphite domain size,HMC-7 achieves an effective absorption bandwidth(EAB)of 6.08 GHz at 2.02 mm ***,constructing macroscale gradient metamaterials enables an ultrabroadband EAB of 12.16 GHz at a thickness of only 5.00 mm,with the maximum radar cross section reduction value reaching 36.4 dB *** innovative approach not only advances the understanding of metal–nonmetal co-doping but also realizes broadband EMWA,thus contributing to the development of EMWA mechanisms and applications.

关键词： Metal-nonmetal co-doping 3d-2p orbital coupling Spin polarization Helical structure Broadband EM wave absorption

芍药苷对烫伤大鼠的治疗作用及基于网络药理学的机制探讨

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世界中医药 2024年第16期19卷 2371-2377页

作者：程兴胡仁超罗锦花廖文强薛永茂詹剑华南昌大学第一附属医院烧伤整形与创面修复医学中心南昌330006

目的:研究芍药苷对烫伤大鼠的治疗作用,并基于网络药理学和分子对接技术探讨芍药苷治疗烧伤的作用机制。方法:建立大鼠深Ⅱ度烫伤模型,通过观察芍药苷对大鼠创面外观、计算创面愈合率,创面组织病理学变化;并运用Pubchem、Pahrmmapper、G... 详细信息

目的:研究芍药苷对烫伤大鼠的治疗作用,并基于网络药理学和分子对接技术探讨芍药苷治疗烧伤的作用机制。方法:建立大鼠深Ⅱ度烫伤模型,通过观察芍药苷对大鼠创面外观、计算创面愈合率,创面组织病理学变化;并运用Pubchem、Pahrmmapper、GeneCards等数据库获取芍药苷及烧伤相关靶点,利用STRING数据库和Cytoscape软件,构建并可视化中药(化合物)-靶点-疾病多层次分子网络,通过MCODE分析进行核心基因的筛选,并进行基因本体(GO)及京都基因和基因组百科全书(KEGG)富集分析。最后,利用AutoDock Vina进行分子对接验证。结果:芍药苷能明显促进烫伤大鼠的创面愈合,并促进血管生成及新生上皮形成,减少局部炎症细胞浸润;进一步筛选出芍药苷潜在化学靶点337个,芍药苷与烧伤疾病之间共有靶点138个,主要包括基质金属蛋白酶1(MMP1),肿瘤坏死因子(TNF)等。富集分析结果显示,芍药苷治疗烧伤的核心靶点主要通过PI3K/AKT信号通路、MAPK信号通路等,分子对接计算结果表明,芍药苷与蛋白激酶B1(AKT1)、白蛋白(ALB)、白细胞介素-1β(IL-1β)、TNF、血管内皮生长因子A(VEGFA)等核心靶点有着较好的结合活性。结论:芍药苷通过抑制炎症反应、调控早期微循环、促进血管生成来达到治疗烧伤的目的。本研究证实了芍药苷对烧伤的治疗作用,并揭示相关分子机制。

关键词：芍药苷烧伤网络药理学分子对接作用机制动物实验信号通路富集分析

An attention-based teacher-student model for multivariate short-term landslide displacement prediction incorporating weather forecast data

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Journal of Mountain Science 2024年第8期21卷 2739-2753页

作者： CHEN Jun hu Wang ZHANG Yu QIU Hongzhi WANG renchao Sichuan Artificial Intelligence Research Institute Yibin 644000China School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China School of Architecture and Civil Engineering Chengdu UniversityChengdu 610106China

Predicting the displacement of landslide is of utmost practical importance as the landslide can pose serious threats to both human life and ***,traditional methods have the limitation of random selection in sliding window selection and seldom incorporate weather forecast data for displacement prediction,while a single structural model cannot handle input sequences of different lengths at the same *** order to solve these limitations,in this study,a new approach is proposed that utilizes weather forecast data and incorporates the maximum information coefficient(MIC),long short-term memory network(LSTM),and attention mechanism to establish a teacher-student coupling model with parallel structure for short-term landslide displacement *** MIC,a suitable input sequence length is selected for the LSTM *** investigate the influence of rainfall on landslides during different seasons,a parallel teacher-student coupling model is developed that is able to learn sequential information from various time series of different *** teacher model learns sequence information from rainfall intensity time series while incorporating reliable short-term weather forecast data from platforms such as China Meteorological Administration(CMA)and Reliable Prognosis(https://***)to improve the model’s expression capability,and the student model learns sequence information from other time *** attention module is then designed to integrate different sequence information to derive a context vector,representing seasonal temporal attention ***,the predicted displacement is obtained through a linear *** proposed method demonstrates superior prediction accuracies,surpassing those of the support vector machine(SVM),LSTM,recurrent neural network(RNN),temporal convolutional network(TCN),and LSTM-Attention *** achieves a mean absolute error(MAE)of 0.072 mm,root mean square error(RMSE)of 0.096 mm,and pearson correlation coefficients(PC

关键词： Landslide prediction MIC LSTM Attention mechanism Teacher Student model Prediction stability and interpretability

Quantitative Estimation of Pipeline Slope Disaster Risk in China

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International Journal of Disaster Risk Science 2023年第2期14卷 298-312页

作者： Yan Yan Jiaojiao Zhou Cheng Xie Shuyao Yin Sheng hu renchao Wang Key Laboratory of High-Speed Railway Engineering Ministry of Education/School of Civil EngineeringSouthwest Jiaotong UniversityChengdu610031China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China Pipe China South Branch Guangzhou510623China Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity Northwest UniversityXi’an 710127China School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China

China’s economic development is closely related to oil and gas resources,and the country is investing heavily in pipeline *** geological hazards seriously affect the long-term safe operation of buried pipelines,usually causing pipeline leakage,property and environmental losses,and adverse social *** ensure the safety of pipelines and reduce the probability of pipeline disasters,it is necessary to predict and quantitatively evaluate slope *** there has been much research focus in recent years on the evaluation of pipeline slope disasters and the stress calculation of pipelines under hazards,existing methods only provide information on the occurrence probability of slope events,not whether a slope disaster will lead to pipeline *** the 2015 Xinzhan landslide in Guizhou Province,China,as an example,this study used discrete elements to simulate landslide events and determine the risk level and scope for pipeline damage,and then established a pipe-soil coupling model to quantitatively evaluate the impact of landslide hazards for pipelines in medium-and high-risk *** results provide a reference for future pipeline disaster prevention and control.

关键词： China Coupled pipe-soil model Landslides Pipeline slope disasters Pipe stress Risk classification

Metal–Organic Gel Leading to Customized Magnetic‑Coupling Engineering in Carbon Aerogels for Excellent Radar Stealth and Thermal Insulation Performances

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Nano-Micro Letters 2024年第3期16卷 36-52页

作者： Xin Li Ruizhe hu Zhiqiang Xiong Dan Wang Zhixia Zhang Chongbo Liu Xiaojun Zeng Dezhi Chen renchao Che Xuliang Nie Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063People’s Republic of China School of Environmental and Chemical Engineering Nanchang Hangkong UniversityNanchang 330063People’s Republic of China Laboratory of Advanced Materials Department of Materials Science and Collaborative Innovation Center of Chemistry for Energy Materials and Collaborative Innovation Center of Chemistry for Energy MaterialsFudan UniversityShanghai 200438People’s Republic of China School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403People’s Republic of China College of Chemistry and Materials Jiangxi Agricultural UniversityNanchang 330045People’s Republic of China

Metal–organic gel(MOG)derived composites are promising multi-functional materials due to their alterable composition,identifiable chemical homogeneity,tunable shape,and porous ***,stable metal–organic hydrogels are prepared by regulating the complexation effect,solution polarity and curing ***,collagen peptide is used to facilitate the fabrication of a porous aerogel with excellent physical properties as well as the homogeneous dispersion of magnetic particles during ***,two kinds of heterometallic magnetic coupling systems are obtained through the application of Kirkendall ***/nitrogen-doped carbon(NC)aerogel demonstrates an ultra-strong microwave absorption of−85 dB at an ultra-low loading of 5%.After reducing the time taken by atom shifting,a FeCo/Fe3O4/NC aerogel containing virus-shaped particles is obtained,which achieves an ultra-broad absorption of 7.44 GHz at an ultra-thin thickness of 1.59 mm due to the coupling effect offered by dual-soft-magnetic ***,both aerogels show excellent thermal insulation property,and their outstanding radar stealth performances in J-20 aircraft are confirmed by computer simulation *** formation mechanism of MOG is also discussed along with the thermal insulation and electromagnetic wave absorption mechanism of the aerogels,which will enable the development and application of novel and lightweight stealth coatings.

关键词： Metal-organic gels Heterometallic magnetic coupling Radar stealth Thermal insulation Computer simulation technology

Boosting oxygen reduction activity of spinel CoFe2O4 by strong interaction with hierarchical nitrogen-doped carbon nanocages

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Science Bulletin 2017年第20期62卷 1365-1372页

作者： Hao Fan Lijun Yang Yu Wang Xiali Zhang Qingsong Wu renchao Che Meng Liu Qiang Wu Xizhang Wang Zheng hu Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Jiangsu Provincial Lab for Nanotechnology School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China Department of Materials Science and Advanced Materials Laboratory Fudan University Shanghai 200438 China

The unique hierarchical nitrogen-doped carbon nanocages(h NCNC) are used as a new support to homogeneously immobilize spinel Co Fe_2O_4 nanoparticles by a facile solvothermal method. The so-constructed hierarchical Co Fe_2O_4/h NCNC catalyst exhibits a high oxygen reduction activity with an onset potential of0.966 V and half-wave potential of 0.819 V versus reversible hydrogen electrode, far superior to the corresponding 0.846 and 0.742 V for its counterpart of Co Fe_2O_4/h CNC with undoped hierarchical carbon nanocages(h CNC) as the support, which locates at the top level for spinel-based catalysts to ***, the Co Fe_2O_4/h NCNC displays the superior performance to the Co Fe_2O_4/h CNC, when used as the cathode catalysts in the home-made Al-air batteries. X-ray photoelectron spectroscopy characterizations reveal the more charge transfer from Co Fe_2O_4 to h NCNC than to h CNC, indicating the stronger interaction between Co Fe_2O_4 and h NCNC due to the nitrogen participation. The enhanced interaction and hierarchical morphology favor the high dispersion and modification of electronic states for the active species as well as the mass transport during the oxygen reduction process, which plays a significant role in boosting the electrocatalytic performances. In addition, we noticed the high sensitivity of O 1 s spectrum to the particle size and chemical environment for spinel oxides, which is used as an indicator to understand the evolution of ORR activities for all the Co Fe_2O_4-related contrast catalysts. Accordingly,the well-defined structure-performance relationship is demonstrated by the combination of experimental characterizations with theoretical calculations. This study provides a promising strategy to develop efficient, inexpensive and durable oxygen reduction electrocatalysts by tuning the interaction between spinel metal oxides and the carbon-based supports.

关键词： Oxygen reduction electrocatalyst Spinel cobalt ferrite oxide Hierarchical nitrogen-doped carbon nanocages Strong interaction Structure-performance relationship Al-air battery

NiS ultrafine nanorod with translational and rotational symmetry

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National Science Review 2024年第7期11卷 218-225页

作者： Jianxin Kang Qi hu Ruixuan Zhang Ang Gao Zhongning huang Ziming Su Ke Pei Qinghua Zhang Li-Min Liu renchao Che Lin Gu Er-Jia Guo Lin Guo School of Chemistry Beihang University Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials Academy for Engineering&Technology Fudan University Zhejiang Laboratory Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials School of Materials Science and Engineering Tsinghua University Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences School of Physics Beihang University

Anisotropy is a significant and prevalent characteristic of materials, conferring orientation-dependent properties, meaning that the creation of original symmetry enables key functionality that is not found in nature. Even with the advancements in atomic machining, synthesis of separated symmetry in different directions within a single structure remains an extraordinary challenge. Here, we successfully fabricate NiS ultrafine nanorods with separated symmetry along two directions. The atomic structure of the nanorod exhibits rotational symmetry in the radial direction, while its axial direction is characterized by divergent translational symmetry, surpassing the conventional crystalline structures known to date. It does not fit the traditional description of the space group and the point group in three dimensions, so we define it as a new structure in which translational symmetry and rotational symmetry are separated. Further corroborating the atomic symmetric separation in the electronic structure, we observed the combination of stripe and vortex magnetic domains in a single nanorod with different directions, in accordance with the atomic *** manipulation of nanostructure at the atomic level introduces a novel approach to regulate new properties finely, leading to the proposal of new nanotechnology mechanisms.

关键词： separated symmetry NiS anisotropy structure atomic machining magnetic domain

面向大型工业仓库的多AGV综合优化调度方法

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中南大学学报（自然科学版） 2023年第5期54卷 1779-1790页

作者：胡恩泽贺建军申帅吴仁超中南大学自动化学院湖南长沙410083

针对大型工业仓库中自动引导车(AGV)集群执行大规模任务时效率低的问题,提出一种基于分层规划的综合优化调度方法,将调度问题分解为聚合的上层任务定序分配问题和下层路径规划问题。在上层问题中生成精英解集,将下层路径规划生成的禁忌... 详细信息

针对大型工业仓库中自动引导车(AGV)集群执行大规模任务时效率低的问题,提出一种基于分层规划的综合优化调度方法,将调度问题分解为聚合的上层任务定序分配问题和下层路径规划问题。在上层问题中生成精英解集,将下层路径规划生成的禁忌列表作为碰撞冲突约束条件融入上层问题迭代寻优过程,并在迭代搜索中,将路径规划结果反馈给上层问题并更新约束条件,通过上下两层问题的综合计算得到整体性能最优的方案。进一步将路径搜索和禁忌列表融合,实现AGV调度中相互关联的多个问题的同步优化。通过大型工业仓库实例验证该方法的有效性。研究结果表明:相较于依次优化调度方法,基于分层规划的综合优化调度方法的平均任务完成时间减少10.56%,碰撞冲突造成的延迟时间减少74.53%;相较于混合自适应大邻域搜索算法和预先规划算法,基于混合离散状态转移算法的分层规划综合调度方法对于大规模问题任务完成时间分别减少9.73%和5.54%,计算时间分别减少84.19%和86.68%。

关键词：自动引导车(AGV) 综合优化调度任务定序分配路径规划碰撞冲突

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