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Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N‑RGO for Boosting Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 517-532页

作者： Kaili Zhang Yuefeng Yan zhen wang Guansheng Ma Dechang Jia Xiaoxiao Huang Yu Zhou State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China MIIT Key Laboratory of Advanced Structural‑Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Developing effective strategies to regulate graphene’s conduction loss and polarization has become a key to expanding its application in the electromagnetic wave absorption(EMWA)*** on the unique energy band structure of graphene,regulating its bandgap and electrical properties by introducing heteroatoms is considered a feasible ***,metal-nitrogen doping reduced graphene oxide(M–N-RGO)was prepared by embedding a series of single metal atoms M–N_(4) sites(M=Mn,Fe,Co,Ni,Cu,Zn,Nb,Cd,and Sn)in RGO using an N-coordination atom-assisted *** composites had adjustable conductivity and polarization to optimize dielectric loss and impedance matching for efficient EMWA *** results showed that the minimum reflection loss(RL_(min))of Fe–N-RGO reaches−74.05 dB(2.0 mm)and the maximum effective absorption bandwidth(EAB_(max))is 7.05 GHz(1.89 mm)even with a low filler loading of only 1 wt%.Combined with X-ray absorption spectra(XAFS),atomic force microscopy,and density functional theory calculation analysis,the Fe–N_(4) can be used as the polarization center to increase dipole polarization,interface polarization and defect-induced polarization due to d-p orbital hybridization and structural ***,electron migration within the Fe further leads to conduction loss,thereby synergistically promoting energy *** study demonstrates the effectiveness of metal-nitrogen doping in regulating the graphene′s dielectric properties,which provides an important basis for further investigation of the loss mechanism.

关键词： Electromagnetic wave absorption Fe-N-RGO Dipole polarization Conduction loss Impedance matching

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Characteristic changes in astrocyte properties during astrocyte-to-neuron conversion induced by NeuroD1/Ascl1/Dlx2

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Neural Regeneration Research 2025年第6期20卷 1801-1815页

作者： Qing He zhen wang Yuchen wang Mengjie Zhu Zhile Liang Kanghong Zhang Yuge Xu Gong Chen GHM Institute of CNS Regeneration Jinan UniversityGuangzhouGuangdong ProvinceChina

Direct in vivo conversion of astrocytes into functional new neurons induced by neural transcription factors has been recognized as a potential new therapeutic intervention for neural injury and degenerative disorders. However, a few recent studies have claimed that neural transcription factors cannot convert astrocytes into neurons, attributing the converted neurons to pre-existing neurons mis-expressing transgenes. In this study, we overexpressed three distinct neural transcription factors––NeuroD1, Ascl1, and Dlx2––in reactive astrocytes in mouse cortices subjected to stab injury, resulting in a series of significant changes in astrocyte properties. Initially, the three neural transcription factors were exclusively expressed in the nuclei of astrocytes. Over time, however, these astrocytes gradually adopted neuronal morphology, and the neural transcription factors was gradually observed in the nuclei of neuron-like cells instead of astrocytes. Furthermore,we noted that transcription factor-infected astrocytes showed a progressive decrease in the expression of astrocytic markers AQP4(astrocyte endfeet signal), CX43(gap junction signal), and S100β. Importantly, none of these changes could be attributed to transgene leakage into preexisting neurons. Therefore, our findings suggest that neural transcription factors such as NeuroD1, Ascl1, and Dlx2 can effectively convert reactive astrocytes into neurons in the adult mammalian brain.

关键词： aquaporin-4 Ascl1 astrocyte cortex Dlx2 gap junction glia-to-neuron conversion neural regeneration NeuroD1 reprogramming

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Mechanical Properties of Railway High-strength Manufactured Sand Concrete: Typical Lithology, Stone Powder Content and Strength Grade

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 194-203页

作者： wang zhen LI Huajian HUANG Fali YANG Zhiqiang WEN Jiaxin SHI Henan Railway Engineering Research Institute China Academy of Railway Science Corporation LimitedBeijing 100081China State Key Laboratory for Track Technology of High-Speed Railway Beijing 100081China

In order to achieve the large-scale application of manufactured sand in railway high-strength concrete structure,a series of high-strength manufactured sand concrete(HMC)are prepared by taking the manufactured sand lithology(tuff,limestone,basalt,granite),stone powder content(0,5%,10%,15%)and concrete strength grade(C60,C80,C100)as *** evolution of mechanical properties of HMC and the correlation between cubic compressive strength and other mechanical properties are *** to river sand,manufactured sand enhances the cubic compressive strength,axial compressive strength and elastic modulus of concrete,while its potential microcracks weaken the flexural strength and splitting tensile strength of *** powder content displays both positive and negative effects on mechanical properties of HMC,and the stone powder content is suggested to be less than 10%.The empirical formulas between cubic compressive strength and other mechanical properties are proposed.

关键词： manufactured sand concrete railway mechanical property lithology stone powder content

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Exit options sustain altruistic punishment and decrease the second-order free-riders, but it is not a panacea

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Science China(Information Sciences) 2025年第1期68卷 278-291页

作者： Chen SHEN Zhao SONG Lei SHI Jun TANIMOTO zhen wang Faculty of Engineering Sciences Kyushu University School of Statistics and Mathematics Yunnan University of Finance and Economics School of Computing Engineering and Digital Technologies Teesside University School of Artificial Intelligence OPtics and Electro Nics (iOPEN) Northwestern Polytechnical University

Why do humans punish free riders at their own expense? This behavior represents an evolutionary puzzle in human societies. This study explores the role of exit strategies in fostering altruistic punishment within evolutionary game theory. We extend the traditional prisoner's dilemma model by incorporating exiters, players who opt out for a small payoff while nullifying their opponent's payoff, and altruistic punishers who cooperate and punish non-cooperators. Our findings indicate that in well-mixed populations, exiters destabilize defection but do not promote altruistic punishment. In social networks, however,exiters enable altruistic punishment via cyclic dominance among altruistic punishers, defectors, and exiters. Notably, this cyclic dominance is sensitive to exit payoffs; adjustments can lead to cyclic dominance of non-punishing cooperators, defectors, and exiters, or to a bi-stable state between these two types of cyclic dominance. These results highlight the nuanced impact of exiters on altruistic punishment, emphasizing the need for careful incentivization of exit behavior. While exiters can support altruistic punishment in networked populations, their effectiveness is not a panacea and is highly sensitive to exit payoffs, indicating limits to the voluntary participation mechanism.

关键词： evolutionary game theory altruistic punishment coexistence cyclic dominance bi-stable

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Hydrogen sulfide reduces oxidative stress in Huntington's disease via Nrf2

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Neural Regeneration Research 2025年第6期20卷 1776-1788页

作者： Zige Jiang Dexiang Liu Tingting Li Chengcheng Gai Danqing Xin Yijing Zhao Yan Song Yahong Cheng Tong Li zhen wang Department of Physiology School of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Medical Psychology and Ethics School of Basic Medicine SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Neurosurgery Surgery Qingdao Municipal HospitalQingdaoShandong ProvinceChina

The pathophysiology of Huntington's disease involves high levels of the neurotoxin quinolinic acid. Quinolinic acid accumulation results in oxidative stress, which leads to neurotoxicity. However, the molecular and cellular mechanisms by which quinolinic acid contributes to Huntington's disease pathology remain unknown. In this study, we established in vitro and in vivo models of Huntington's disease by administering quinolinic acid to the PC12 neuronal cell line and the striatum of mice, respectively. We observed a decrease in the levels of hydrogen sulfide in both PC12 cells and mouse serum, which was accompanied by down-regulation of cystathionine β-synthase, an enzyme responsible for hydrogen sulfide production. However, treatment with NaHS(a hydrogen sulfide donor) increased hydrogen sulfide levels in the neurons and in mouse serum, as well as cystathionine β-synthase expression in the neurons and the mouse striatum, while also improving oxidative imbalance and mitochondrial dysfunction in PC12 cells and the mouse striatum. These beneficial effects correlated with upregulation of nuclear factor erythroid 2-related factor 2 expression. Finally, treatment with the nuclear factor erythroid 2-related factor 2inhibitor ML385 reversed the beneficial impact of exogenous hydrogen sulfide on quinolinic acid-induced oxidative stress. Taken together, our findings show that hydrogen sulfide reduces oxidative stress in Huntington's disease by activating nuclear factor erythroid 2-related factor 2,suggesting that hydrogen sulfide is a novel neuroprotective drug candidate for treating patients with Huntington's disease.

关键词： apoptosis cystathionine-β-synthase nuclear factor erythroid 2-related factor 2 Huntington's disease hydrogen sulfide mitochondrion neuroplasticity oxidative stress quinolinic acid reactive oxygen species

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生成式人工智能对数据安全保护的挑战及刑法应对

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河南社会科学 2025年第1期33卷 56-63页

作者：聂立泽王祯中山大学法学院广东广州510006

随着生成式人工智能在多个领域的应用,数据安全保护面临新的挑战。在数据安全保护的路径选择上,传统模式选择以数据主体为锚定权利的基准,在赋予数据主体相关权利的基础上,以告知—同意原则作为数据主体的权利边界,建立涉及刑法、民法... 详细信息

随着生成式人工智能在多个领域的应用,数据安全保护面临新的挑战。在数据安全保护的路径选择上,传统模式选择以数据主体为锚定权利的基准,在赋予数据主体相关权利的基础上,以告知—同意原则作为数据主体的权利边界,建立涉及刑法、民法等多个领域的数据安全制度。但不得不承认,伴随人工智能的发展,这种基于数据主体权利的数据保护模式逐渐表现出认知与结构性困难,需要从路径选择上进行转变。相对于以数据主体权利为核心的保护模式,刑法可以从风险的角度考虑,以贝克的风险社会理论作为理论参考,从承认数据主体具有完全理性转变为承认其具有有限理性,将数据安全保护的主要关注点从数据主体的权利保障转移到数据安全风险的预防和管控。此外,在数据安全保护的实质层面上,生成式人工智能侵害数据法益的行为可以概括为行为人利用或针对生成式人工智能实施的行为,以及生成式人工智能在演化、运行过程中“自主”实施的行为。刑法应以风险作为主要考量因素,结合已有规定对上述两种行为进行评价。

关键词：生成式人工智能风险预防数据安全刑法规制

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新疆喀什吐曼河岸线保护与利用规划研究

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水利技术监督 2025年第1期 92-95,150页

作者：王振新疆水利水电勘测设计研究院有限责任公司新疆乌鲁木齐830000

河湖岸线是生态保护和经济发展重要基石,岸线具有供水、防洪、灌溉、经济发展等功能,河湖管理工作主要包括管理区域划分、岸线保护、利用规划、水利基础规划等编制内容。本文研究喀什吐曼河岸线保护和利用规划内容,通过系统分析吐曼河... 详细信息

河湖岸线是生态保护和经济发展重要基石,岸线具有供水、防洪、灌溉、经济发展等功能,河湖管理工作主要包括管理区域划分、岸线保护、利用规划、水利基础规划等编制内容。本文研究喀什吐曼河岸线保护和利用规划内容,通过系统分析吐曼河岸线保护和利用规划现状、利用形式,科学制定规划方案,合理分析环境影响,综合提出有效建议,为岸线保护与利用规划研究与实施提供重要参考。

关键词：岸线保护和利用规划形势分析划分生态环境

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中国革命传统作品的教育价值及其教学实现——以高中语文教学为例

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教师教育学报 2025年第1期12卷 85-96页

作者：王珍马绍玺云南师范大学教育学部云南昆明650500 安徽省太和中学安徽阜阳236600

中国革命传统作品蕴含独特的教育价值,但在实际的语文教学中并未得到应有的重视。为有效实现和充分彰显中国革命传统作品的教育价值,语文教师在进行相关教学时,应以习近平新时代中国特色社会主义思想为指导,以《革命传统进中小学课程教... 详细信息

中国革命传统作品蕴含独特的教育价值,但在实际的语文教学中并未得到应有的重视。为有效实现和充分彰显中国革命传统作品的教育价值,语文教师在进行相关教学时,应以习近平新时代中国特色社会主义思想为指导,以《革命传统进中小学课程教材指南》为指引,以《普通高中语文课程标准(2017年版2020年修订)》为方向,以统编高中语文教材为依托,以当下高中语文教学现状为问题导向,从德育价值、美育价值、史学价值、文化价值四个维度深入挖掘中国革命传统作品的教育潜力。中国革命传统作品教育价值的四个维度具有整体性、层次性、交互性和生成性,彼此之间存在着相互联系、相互依存和相互生成的结构关系,共同形成中国革命传统作品巨大的教育潜力。教师可通过巧妙整合文本资源、精心创设教学情境、有序组织实践活动,最大化实现中国革命传统作品的教育价值,增强学生对中国革命传统作品的价值认同,使之能够赓续红色血脉、践行革命精神,最终成长为德智体美劳全面发展的社会主义建设者和接班人。

关键词：立德树人教育价值中国革命传统作品统编高中语文教材教学路径

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我国碳酸酯类电解液溶剂的产业现状

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合成纤维 2025年第1期54卷 1-3页

作者：王佳臻华阳集团(山西)碳基合成新材料有限责任公司山西太原030021

电解液溶剂与电池的综合性能息息相关。介绍了目前国内常用的电解液溶剂及其物理性质,其中碳酸二甲酯和碳酸甲乙酯用量最大。同时主要介绍了碳酸二甲酯和碳酸甲乙酯的现阶段生产技术,对比了碳酸二甲酯生产工艺的优缺点,介绍了酯交换法... 详细信息

电解液溶剂与电池的综合性能息息相关。介绍了目前国内常用的电解液溶剂及其物理性质,其中碳酸二甲酯和碳酸甲乙酯用量最大。同时主要介绍了碳酸二甲酯和碳酸甲乙酯的现阶段生产技术,对比了碳酸二甲酯生产工艺的优缺点,介绍了酯交换法合成碳酸二甲酯的主流工艺。最后分析了当前两种主要电解液溶剂的产能及市场情况,并提出未来产业发展的方向。

关键词：电解液碳酸二甲酯碳酸甲乙酯

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A Decentralized Prediction Market Platform Based on Blockchain and Masternode Technologies

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China Communications 2020年第9期17卷 25-33页

作者： zhen wang School of Computer Science and Engineering Huizhou University46 Yanda RoadHuizhouChina

Prediction market can help to trade the outcome of events,which is very useful for risk hedging,especially when people are making business ***,the traditional prediction market is centralized,which means the platform is completely controlled by just one person or *** centralization has bad influence on the platform to obtaining trust from massive *** it is important for the prediction market industry to decentralize the traditional platform into a decentralized one,and get its control from few person and give it back to a lot of people in the prediction market *** is a very promising technology to make it true as it is a popular decentralizing ***,existing blockchain technologies like Bitcoin or Ethernum bring about new problems like high energy consumption,expensive fee,and very low system capacity,which is not suitable for the current prediction *** solve these problems,we propose to combine masternode technology together with blockchain to serve as a decentralized node,and each masternode is deployed and running on an edge server in mobile edge *** network of masternodes serves together as the decentralized prediction market *** we know,it is not easy to run a *** the number of masternodes is much less than the number of complete nodes of the *** a result,it is easier to reach the consensus among these *** analysis and experimental results show that our proposed method is useful.

关键词： prediction market decentralization blockchain masternode mobile edged computing

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