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Nano Research 2023年第5期16卷 6369-6379页

作者： Junhua Su Qinbo Ma Longkun Que hunan jiang Xiaoling Xu Yong Wang Yifan Guo Zuowan Zhou Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China School of Chemistry Southwest Jiaotong UniversityChengdu 610031China Yibin Research Institute Southwest Jiaotong UniversityYibin 644000China School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031China

Magnetic expanded graphite(EG)hybrids were synthesized by co-intercalation polymerization of aniline together with transition metal *** results show that metal ions(Fe,Co,Ni,Cu)and even their mixtures can co-intercalate into graphite interlayers with flexibly controllable ratios and *** these co-intercalation compounds,Fe/Ni-intercalated graphite with a predesigned mole ratio of 1:3 transforms into NiFe_(2)O_(4)/FeNi_(3)@EG during the annealing *** synthesized magnetic EG hybrids present multiband microwave absorption in C and X bands due to improved impedance match as well as significantly enhanced interfacial polarization relaxation induced by multi-componential *** reflection values of−39.1 dB at 6.95 GHz and−25.7 dB at 9.4 GHz are achieved with an ultra-low loading of 5 wt.%.This work provides a flexible approach for tuning the components and structures of magnetic EG hybrids,which may contribute to the development of microwave absorption materials with superior performances.

关键词： co-intercalation intercalation polymerization expanded graphite transition metal microwave absorption

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二茂铁柠檬酰腙缩聚物的合成、表征及应用

化学研究与应用 2012年第5期24卷 672-677页

作者：蒋虎南林云林展如四川师范大学化学与材料科学学院四川成都610066

通过1,1'-二乙酰基二茂铁与柠檬酸三甲酰肼缩合,制成了二茂铁柠檬酰腙聚合物(Fc-NM),再在DMF中与金属(M=Cu、Co、Ni、Mn、Zn)醋酸盐配位,制成五种二茂铁酒石酰腙金属配位聚合物(Fc-NM-M)。用IR、TGA、XRD、SEM及介电常数进行表征,结果表... 详细信息

通过1,1'-二乙酰基二茂铁与柠檬酸三甲酰肼缩合,制成了二茂铁柠檬酰腙聚合物(Fc-NM),再在DMF中与金属(M=Cu、Co、Ni、Mn、Zn)醋酸盐配位,制成五种二茂铁酒石酰腙金属配位聚合物(Fc-NM-M)。用IR、TGA、XRD、SEM及介电常数进行表征,结果表明,在适于移动通信应用的0.2-2.0GHz频段,Fc-NM有较高的介电常数(ε‘),较低的介电损耗(ε″),将其制成倒F型微带天线有良好的缩波性能,方向图及较高的增益。因此Fc-NM作为一种天线新材料,可用于小型化、多功能化及高增益的双频微带天线。

关键词：二茂铁酰腙配位缩聚物合成表征天线应用

新型二茂铁酒石酰腙聚合物的合成、表征及应用

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材料导报 2012年第16期26卷 55-59页

作者：蒋虎南林云林展如四川师范大学化学与材料科学学院成都610066

通过1,1′-二乙酰基二茂铁与酒石酸二甲酰肼反应合成二茂铁酒石酰腙聚合物(Fc-JS)后,再与金属(M=Cu、Co、Ni、Mn、Cd)乙酸盐配位,得到5种二茂铁酒石酰腙金属配位聚合物(Fc-JS-M)。用IR、TGA、XRD、荧光光谱及介电常数进行表征。结果表明... 详细信息

通过1,1′-二乙酰基二茂铁与酒石酸二甲酰肼反应合成二茂铁酒石酰腙聚合物(Fc-JS)后,再与金属(M=Cu、Co、Ni、Mn、Cd)乙酸盐配位,得到5种二茂铁酒石酰腙金属配位聚合物(Fc-JS-M)。用IR、TGA、XRD、荧光光谱及介电常数进行表征。结果表明,在适于移动通信应用的0.2～2.0GHz频段,Fc-JS-M有较高的介电常数(ε′)、较低的介电损耗(ε″),将其制成的倒F型微带天线有良好的缩波性能和较高的增益。因此Fc-JS-M作为一种天线新材料,可用于小型化、多功能化及高增益的双频微带天线。

关键词：二茂铁酰腙配位聚合物合成表征天线应用

纳米MnFe_2O_4·Fe_3O_4固溶体的制备及其电磁性能研究

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化工新型材料 2012年第4期40卷 78-80,96页

作者：林云蒋虎南林展如四川师范大学化学与材料科学学院成都610066

二乙酰二茂铁苯二甲酰腙聚合物在DMSO中与氯化锰反应合成二乙酰二茂铁二甲酰腙-Mn配位聚合物(PFZMn),高温(400、600及1200℃)热解制得***3O4固溶体;采用XRD、TEM、超导量子强磁计(SQUID),高频、微波下(0.1～1.8GHz)对固溶体进行表征。... 详细信息

二乙酰二茂铁苯二甲酰腙聚合物在DMSO中与氯化锰反应合成二乙酰二茂铁二甲酰腙-Mn配位聚合物(PFZMn),高温(400、600及1200℃)热解制得***3O4固溶体;采用XRD、TEM、超导量子强磁计(SQUID),高频、微波下(0.1～1.8GHz)对固溶体进行表征。结果表明1200℃热解所得的固溶体为纳米强磁体,它在5及300K的饱和磁化强度(Ms)、剩磁(Mr)及矫顽力(Hc)分别为62.80及49.30emu/g;5.13及3.15emu/g和305及268Oe。而在0.1～1.8GHz有较高的电磁参数(1GHz时,),及较低的电磁损耗(1GHz下,μr′=6×10-3,εr′=2.5×10-2)。

关键词：固溶体电磁性能小型化和宽带化

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石墨烯扭转结构的前沿研究进展

科学通报 2021年第15期66卷 1861-1873页

作者：郭一帆蒋虎南韦炜李丹李金阳周祚万西南交通大学材料科学与工程学院材料先进技术教育部重点实验室成都610031 西南交通大学前沿科学技术研究院成都610031

石墨烯间的扭转打破了传统的Bernal堆叠形式,在形成摩尔超晶格的同时引起了电子能带结构的重构.因此,扭转角作为石墨烯结构参数之一逐渐引起人们的注意.此前关于扭转石墨烯的研究多停留于理论阶段,而随着制备手段和理论研究的发展,研究... 详细信息

石墨烯间的扭转打破了传统的Bernal堆叠形式,在形成摩尔超晶格的同时引起了电子能带结构的重构.因此,扭转角作为石墨烯结构参数之一逐渐引起人们的注意.此前关于扭转石墨烯的研究多停留于理论阶段,而随着制备手段和理论研究的发展,研究者逐渐开始探索石墨烯扭转结构对其性能的影响规律.近年来,在魔角石墨烯中观察到的超导态和铁磁性引发了人们对于石墨烯扭转结构的大量关注和讨论.这些在常规碳材料中闻所未闻且未曾被预料到的奇特性质表明,以魔角为代表的扭转石墨烯中仍存在着诸多亟待解决的物理学问题.本文针对扭转石墨烯,特别是魔角石墨烯,围绕其制备方法、电子结构、表征手段和功能特性4个方面进行了较为全面的总结,提出了该领域现存的问题,并展望了扭转石墨烯相关研究的发展趋势.

关键词：扭转石墨烯魔角平带结构关联绝缘超导铁磁性

Toward understanding the role of genomic repeat elements in neurodegenerative diseases

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Neural Regeneration Research 2025年第3期20卷 646-659页

作者： Zhengyu An Aidi jiang Jingqi Chen Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina MOE Frontiers Center for Brain Science Fudan UniversityShanghaiChina MOE Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence Fudan UniversityShanghaiChina Zhangjiang Fudan International Innovation Center ShanghaiChina

Neurodegenerative diseases cause great medical and economic burdens for both patients and society;however, the complex molecular mechanisms thereof are not yet well understood. With the development of high-coverage sequencing technology, researchers have started to notice that genomic repeat regions, previously neglected in search of disease culprits, are active contributors to multiple neurodegenerative diseases. In this review, we describe the association between repeat element variants and multiple degenerative diseases through genome-wide association studies and targeted sequencing. We discuss the identification of disease-relevant repeat element variants, further powered by the advancement of long-read sequencing technologies and their related tools, and summarize recent findings in the molecular mechanisms of repeat element variants in brain degeneration, such as those causing transcriptional silencing or RNA-mediated gain of toxic function. Furthermore, we describe how in silico predictions using innovative computational models, such as deep learning language models, could enhance and accelerate our understanding of the functional impact of repeat element variants. Finally, we discuss future directions to advance current findings for a better understanding of neurodegenerative diseases and the clinical applications of genomic repeat elements.

关键词： Alzheimer's disease ataxia deep learning long-read sequencing neurodegeneration neurodegenerative diseases Parkinson's disease repeat element structural variant

Miyaoka-type inequalities for terminal threefolds with nef anti-canonical divisors

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Science China Mathematics 2025年第1期68卷 1-18页

作者： Masataka Iwai Chen jiang Haidong Liu Department of Mathematics Graduate School of ScienceOsaka University Shanghai Center for Mathematical Sciences & School of Mathematical Sciences Fudan University Department of mathematics Sun Yat-sen University

In this paper,we study Miyaoka-type inequalities on Chern classes of terminal projective 3-folds with nef anti-canonical *** X be a terminal projective 3-fold such that-KXis *** show that if c1（X） · c2（X）≠0,then c1（X） · c2（X） ≥ 1/252;if further X is not rationally connected,then c1（X） · c2（X） ≥ 4/5 and this inequality is *** order to prove this,we give a partial classification of such varieties along with many *** also study the nonvanishing of c1（X）dim X-2· c2（X） for terminal weak Fano varieties and prove a Miyaoka-Kawamata-type inequality.

关键词： terminal threefolds Miyaoka-type inequality boundedness

Optimal Scheduling of an Independent Electro-Hydrogen System with Hybrid Energy Storage Using a Multi-Objective Standardization Fusion Method

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Energy Engineering 2025年第1期122卷 63-84页

作者： SuliangMa ZeqingMeng Mingxuan Chen Yuan jiang School of Electrical and Control Engineering North China University of TechnologyBeijing100144China ChinaThree Gorges Technology Co. Ltd.Beijing100032China School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China

In the independent electro-hydrogen system(IEHS)with hybrid energy storage(HESS),achieving optimal scheduling is ***,it presents a challenge due to the significant deviations in values ofmultiple optimization objective functions caused by their physical *** deviations seriously affect the scheduling process.A novel standardization fusion method has been established to address this issue by analyzing the variation process of each objective function’s *** optimal scheduling results of IEHS with HESS indicate that the economy and overall energy loss can be improved 2–3 times under different optimization *** proposed method better balances all optimization objective functions and reduces the impact of their *** the cost of BESS decreases by approximately 30%,its participation deepens by about 1 ***,if the price of the electrolyzer is less than 15￥/kWh or if the cost of the fuel cell drops below 4￥/kWh,their participation will increase *** study aims to provide a more reasonable approach to solving multi-objective optimization problems.

关键词： Electro-hydrogen system multi-objective optimization standardization method hybrid energy storage system

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斜拉索面内振动和面外摆振的耦合分析

土木工程学报 2003年第4期36卷 65-69页

作者：赵跃宇王连华陈得良蒋丽忠湖南大学中南大学

研究了在谐波激励作用下斜拉索的非线性动力学行为。利用约化方法和Galerkin方法得到了控制方程 ,利用多尺度法对控制方程进行了求解。通过分析平均方程得到了系统的幅频响应曲线。

关键词：约化摆振非线性斜拉索耦合振动

Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： Song He Li Li Sai Wang Shao-jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes