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Graphene Aerogel Composites with Self‑Organized Nanowires‑Packed Honeycomb Structure for Highly Efficient Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 533-547页

作者： Xiao You Huiying Ouyang Ruixiang Deng Qiuqi Zhang Zhenzhong Xing Xiaowu chen Qingliang Shan Jinshan yang Shaoming Dong State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Key Laboratory of Inorganic Coating Materials CAS Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Structural Ceramics and Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China University of Chinese Academy of Sciences Beijing 100039People’s Republic of China

With vigorous developments in nanotechnology,the elaborate regulation of microstructure shows attractive potential in the design of electromagnetic wave ***,a hierarchical porous structure and composite heterogeneous interface are constructed successfully to optimize the electromagnetic loss *** macro–micro-synergistic graphene aerogel formed by the ice template‑assisted 3D printing strategy is cut by silicon carbide nanowires(SiC_(nws))grown in situ,while boron nitride(BN)interfacial structure is introduced on graphene *** unique composite structure forces multiple scattering of incident EMWs,ensuring the combined effects of interfacial polarization,conduction networks,and magnetic-dielectric ***,the as-prepared composites present a minimum reflection loss value of−37.8 dB and a wide effective absorption bandwidth(EAB)of 9.2 GHz(from 8.8 to 18.0 GHz)at 2.5 ***,relying on the intrinsic high-temperature resistance of SiC_(nws) and BN,the EAB also remains above 5.0 GHz after annealing in air environment at 600℃ for 10 h.

关键词： Hierarchical porous structure Interface High-temperature resistance Graphene aerogel composites Electromagnetic wave absorption

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分布式井-地电位梯度无线接收系统的设计

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实验室研究与探索 2015年第6期34卷 55-58,93页

作者：秦玉蒙邱春玲陈文洋王娅男吉林大学仪器科学与电气工程学院国家地球物理探测仪器工程技术研究中心吉林长春130026

为了满足井地电法勘探中高分辨率勘探、地形复杂地区勘探和大范围勘探的需求,研制出一种分布式井-地电位梯度无线接收系统。该系统采用31位Δ-Σ型ADC实现了高分辨率数据采集;利用GPS同步技术实现了多通道数据的同步采集;通过STM32微处... 详细信息

为了满足井地电法勘探中高分辨率勘探、地形复杂地区勘探和大范围勘探的需求,研制出一种分布式井-地电位梯度无线接收系统。该系统采用31位Δ-Σ型ADC实现了高分辨率数据采集;利用GPS同步技术实现了多通道数据的同步采集;通过STM32微处理、Zig Bee无线技术和SD卡联用实现数据接收系统的工作流程控制,数据预处理和存储。试验结果表明:该系统的均方根噪声为0.5μV,动态范围为140 d B;可准确探测出异常体,能够满足井-地电位梯度数据采集的需求。

关键词：分布式测量井-地电位梯度数据采集

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机械连接与变频技术在无极调速排线系统中的应用

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机电工程技术 2012年第7期41卷 138-140页

作者：邱绍文黄忠明陈文洋兴宁市金雁电工有限公司广东梅州514546

通过联轴套与变频器U/F控制方式改进无极调速排线系统,使无极调速器的内部机械结构得到简化,排线系统由机械调速升级为变频电气调速,达到排线系统维护方便、节能、排线美观等效果。

关键词：机械连接联轴套变频技术变频器排线系统

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低热敏激光谐振腔理论和实验

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物理学报 1989年第4期38卷 567-572页

作者：李世忱倪文俊杨巍胡国绛张润天津大学精密仪器系

本文介绍一种内含热聚焦元件的热不敏感谐振腔理论,给出新的严格的解析解法,分析了腔参数变化的影响,得到一些重要结论。用本方法设计了单模Nd:YAG激光器,并取得实验与理论分析相一致的结果。实验发现了两个不同阈值的热稳区,发现在一... 详细信息

本文介绍一种内含热聚焦元件的热不敏感谐振腔理论,给出新的严格的解析解法,分析了腔参数变化的影响,得到一些重要结论。用本方法设计了单模Nd:YAG激光器,并取得实验与理论分析相一致的结果。实验发现了两个不同阈值的热稳区,发现在一个合理设计的腔中,其热稳工作状态可对应于最大的TEM_(cc)模输出。

关键词：激光谐振腔低热理论实验

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The Security of Using Large Language Models:A Survey With Emphasis on ChatGPT

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 1-26页

作者： Wei Zhou Xiaogang Zhu Qing-Long Han Lin Li Xiao chen Sheng wen yang Xiang the School of Science Computing and Engineering Technologies Swinburne University of Technology IEEE the School of Computer and Mathematical Sciences the University of Adelaide Adelaide the Faculty of Science and Engineering Southern Cross University the School of Information and Physical Sciences the University of Newcastle

ChatGPT is a powerful artificial intelligence(AI)language model that has demonstrated significant improvements in various natural language processing(NLP) tasks. However, like any technology, it presents potential security risks that need to be carefully evaluated and addressed. In this survey, we provide an overview of the current state of research on security of using ChatGPT, with aspects of bias, disinformation, ethics, misuse,attacks and privacy. We review and discuss the literature on these topics and highlight open research questions and future *** this survey, we aim to contribute to the academic discourse on AI security, enriching the understanding of potential risks and mitigations. We anticipate that this survey will be valuable for various stakeholders involved in AI development and usage, including AI researchers, developers, policy makers, and end-users.

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Recent progress in the applications of presynaptic dopaminergic positron emission tomography imaging in parkinsonism

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Neural Regeneration Research 2025年第1期20卷 93-106页

作者： Yujie yang Xinyi Li Jiaying Lu Jingjie Ge Mingjia chen Ruixin Yao Mei Tian Jian Wang Fengtao Liu Chuantao Zuo Key Laboratory of Arrhythmias Ministry of EducationDepartment of Medical GeneticsShanghai East HospitalSchool of MedicineTongji UniversityShanghaiChina Department of Neurology National Research Center for Aging and MedicineNational Center for Neurological Disordersand State Key Laboratory of Medical NeurobiologyHuashan HospitalFudan UniversityShanghaiChina Department of Nuclear Medicine&PET Center National Center for Neurological Disordersand National Clinical Research Center for Aging and MedicineHuashan HospitalFudan UniversityShanghaiChina International Human Phenome Institutes(Shanghai) ShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Nowadays,presynaptic dopaminergic positron emission tomography,which assesses deficiencies in dopamine synthesis,storage,and transport,is widely utilized for early diagnosis and differential diagnosis of *** review provides a comprehensive summary of the latest developments in the application of presynaptic dopaminergic positron emission tomography imaging in disorders that manifest *** conducted a thorough literature search using reputable databases such as PubMed and Web of *** criteria involved identifying peer-reviewed articles published within the last 5 years,with emphasis on their relevance to clinical *** findings from these studies highlight that presynaptic dopaminergic positron emission tomography has demonstrated potential not only in diagnosing and differentiating various Parkinsonian conditions but also in assessing disease severity and predicting ***,when employed in conjunction with other imaging modalities and advanced analytical methods,presynaptic dopaminergic positron emission tomography has been validated as a reliable in vivo *** validation extends to screening and exploring potential neuropathological mechanisms associated with dopaminergic *** summary,the insights gained from interpreting these studies are crucial for enhancing the effectiveness of preclinical investigations and clinical trials,ultimately advancing toward the goals of neuroregeneration in parkinsonian disorders.

关键词： aromatic amino acid decarboxylase brain imaging dopamine transporter Parkinson’s disease parkinsonism positron emission tomography presynaptic dopaminergic function vesicle monoamine transporter type 2

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Glutamatergic CYLD deletion leads to aberrant excitatory activity in the basolateral amygdala:association with enhanced cued fear expression

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Neural Regeneration Research 2025年第11期20卷 3259-3272页

作者： Huidong Li Faqin Li Zhaoyi chen Erwen Wu Xiaoxi Dai Danni Li Haojie An Shiyi Zeng Chunyan Wang Li yang cheng Long School of Life Sciences South China Normal UniversityGuangzhouGuangdong ProvinceChina School of Life Sciences Guangzhou UniversityGuangzhouGuangdong ProvinceChina Guangdong Provincial Key Laboratory of Major Obstetric Diseases The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina South China Normal University-Panyu Central Hospital Joint Laboratory of Translational Medical Research Panyu Central HospitalGuangzhouGuangdong ProvinceChina

Neuronal activity,synaptic transmission,and molecular changes in the basolateral amygdala play critical roles in fear ***(CYLD)is a deubiquitinase that negatively regulates the nuclear factor kappa-B *** is well studied in non-neuronal cells,yet underinvestigated in the brain,where it is highly *** studies have shown involvement of CYLD in the remodeling of glutamatergic synapses,neuroinflammation,fear memory,and anxiety-and autism-like ***,the precise role of CYLD in glutamatergic neurons is largely ***,we first proposed involvement of CYLD in cued fear *** next constructed transgenic model mice with specific deletion of Cyld from glutamatergic *** results show that glutamatergic CYLD deficiency exaggerated the expression of cued fear in only male ***,loss of CYLD in glutamatergic neurons resulted in enhanced neuronal activation,impaired excitatory synaptic transmission,and altered levels of glutamate receptors accompanied by over-activation of microglia in the basolateral amygdala of male ***,our study suggests a critical role of glutamatergic CYLD in maintaining normal neuronal,synaptic,and microglial *** may contribute,at least in part,to cued fear expression.

关键词： basolateral amygdala cued fear expression cylindromatosis deubiquitinase glutamate receptor 1 glutamatergic neuron microglial activation N-methyl-D-aspartate receptor 1 neuronal activation synaptic transmission

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Terminal complement complex C5b-9-treated human monocyte-derived dendritic cells undergo maturation and induce Th1 polarization

Terminal complement complex C5b-9-treated human monocyte-der...

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中国免疫学会第五届全国代表大会暨学术会议

作者： chen Yong-wen, yang cheng-ying, Jin Nai-shi, Fei Lei, Jia Zheng-cai, Wu Yu-zhang ( Laboratory of Immunoregulation, Institute of Immunology, PLA, The Third Military Medical University, Chongqing, P. R. China 400038)

Object: Sublytic C5b-9 has been described as a pro-inflammatory mediator that triggers cell activation rather than inducing cell death. Dendritic cells (DCs) play a critical role in controlling antigen specific immune responses. Although DC maturation induced by various stimuli has been characterized, the role of C5b-9 on DC function has not been described.

关键词： Dendritic cells C5b-9 Maturation Thl polarization.

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金属套管对多针头静电纺丝过程中场强分布的影响

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天津工业大学学报 2019年第3期38卷 35-40页

作者：刘延波韦春华刘健杨媛媛赵新宇陈文洋天津工业大学纺织科学与工程学院天津300387 天津工业大学先进纺织复合材料教育部重点实验室天津300387 武汉纺织大学纺织科学与工程学院武汉430200 天津工业大学工程训练国家级实验教学示范中心天津300387

为了研究金属套管的结构参数对场强的影响,采用COMSOL有限元模拟软件对附加金属套管的多针头静电纺丝过程中的电场强度大小与分布进行了模拟与分析,并且提出了一种复合结构的纺针模型,对附加金属套管进行了拓展应用。结果发现:施加金属... 详细信息

为了研究金属套管的结构参数对场强的影响,采用COMSOL有限元模拟软件对附加金属套管的多针头静电纺丝过程中的电场强度大小与分布进行了模拟与分析,并且提出了一种复合结构的纺针模型,对附加金属套管进行了拓展应用。结果发现:施加金属套管后,针尖最大电场强度呈现增加的趋势,当厚度为0.6 mm时,CV值可从原来的7.5%降低到3.2%;针头与金属套管间隙为0.02 mm时,场强最均匀,CV值仅为1.1%;套管高度与针长一致时场强最大。此外,采用复合结构的纺针时针尖电场强度提高了82.9%,而且针头内侧涂覆PTFE可以有效地防止针头堵塞的问题;复合结构的七针外围增加套筒,套管的场强CV值3.23%小于没有金属套管的8.13%,而且每一个针尖的场强均高于没有套筒的针头场强。

关键词：多针头静电纺丝电场强度有限元分析金属套管

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Nitrogen addition promotes soil carbon accumulation globally

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Science China Life Sciences 2025年第1期 284-293页

作者： Xuemei yang Suhui Ma Erhan Huang Danhua Zhang Guoping chen Jiangling Zhu chengjun Ji Biao Zhu Lingli Liu Jingyun Fang Institute of Ecology College of Urban and Environmental Sciencesand Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking University Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China School of Ecology and Environmental ScienceYunnan University State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences

Soil is the largest carbon(C) reservoir in terrestrial ecosystems and plays a crucial role in regulating the global C cycle and climate *** nitrogen(N) deposition has been widely considered as a critical factor affecting soil organic carbon(SOC) storage, but its effect on SOC components with different stability remains unclear. Here, we analyzed extensive empirical data from 304 sites worldwide to investigate how SOC and its components respond to N addition. Our analysis showed that N addition led to a significant increase in bulk SOC(6.7%), with greater increases in croplands(10.6%) and forests(6.0%) compared to grasslands(2.1%). Regarding SOC components, N addition promoted the accumulation of plant-derived C(9.7%–28.5%) over microbial-derived C(0.2%), as well as labile(5.7%) over recalcitrant components(–1.2%), resulting in a shift towards increased accumulation of plant-derived labile C. Consistently, N addition led to a greater increase in particulate organic C(11.9%) than mineral-associated organic C(3.6%), suggesting that N addition promotes C accumulation across all pools, with more increase in unstable than stable pools. The responses of SOC and its components were best predicted by the N addition rate and net primary productivity. Overall, our findings suggest that N enrichment could promote the accumulation of plant-derived and non-mineral associated C and a subsequent decrease in the overall stability of soil C pool, which underscores the importance of considering the effects of N enrichment on SOC components for a better understanding of C dynamics in soils.

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