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Frontiers in high entropy alloys and high entropy functional materials

Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao Zhang Wen Huang Fu-Jie Yu Qi Zhao Xin-Dong Zhu Tao Feng Yao Jiang xiao-Ming Li Xue-Fei Miao He Zhu Si Lan Xue-Qian Wang Bao-Long Shen Zhe Jia Feng-Qi Zhang Wei Wang Qi Liu yang Ren Xun-Li Wang xiao-Ya Cui xiao-yang Wang Ya-Nan Chen Bing-Bing Fan Meng-Ru Li Qi-Long Gao Jia-Ming Guo Zeng-Bao Jiao Zhi-Min Guo Yu-Ping Zhao Qian Yu Rui Huang Ling-Kun Zhang Yi-Ping Lu Xu-Bo Li Huai-Jun Lin Yan Ma Wei-Ming yang Zhi-Hua Shen Hai-Yan He Yong-Gang Sun Yong-Jiang Huang De-Zhuang Wang Qing-Feng Liu Fei-yang Wang Hui Liu Hong-Hui Wu Li-Qiang Wang yang Lu Nan Wang Tian-Li Wang Wei-Bing liao Yi-Han Wang Yuan Wu Yu-Zhen Yin Jie Pan Yi Zhang Qing Wang Jian-yang Zhang Tao yang Yasir Sohail Jin-Yu Zhang Hua Ji Qiang Li Wei-Di Liu Zhi-Gang Chen Xiong-Jun Liu Wen Ma Liang Mao Zhen-Duo Wu School of Materials Science and Engineering Nanjing University of Science and Technology Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and Engineering Southeast University Department of Physics City University of Hong Kong School of Materials Science and Engineering Tianjin University School of Physics and Microelectronics Zhengzhou University Department of Mechanical Engineering Research Institute for Advanced Manufacturing The Hong Kong Polytechnic University Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Key Laboratory of Solidification Control and Digital Preparation Technology (liaoning Province) School of Materials Science and Engineering Dalian University of Technology Institute of Advanced Wear & Corrosion Resistance and Functional Materials Jinan University School of Mechanics and Civil Engineering China University of Mining and Technology School of Physical Sciences Great Bay University School of Materials Science andEngineering Harbin Institute of Technology State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Beijing Advanced Innovation Center for Materials Genome Engineering Research Institute for Carbon Neutrality University of Science and Technology Beijing Department of Mechanical Engineering The University of Hong Kong School of Computing Macquarie University Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Institute of materials Shanghai University Department of Materials Science and Engineering C

Owing to their exceptional properties, high-entropy alloys(HEAs) and high-entropy materials have emerged as promising research areas and shown diverse applications. Here,the recent advances in the field are comprehensively reviewed,organized into five sections. The first section introduces the background of HEAs, covering their definition, significance,application prospects, basic properties, design principles, and microstructure. The subsequent section focuses on cutting-edge high-entropy structural materials, highlighting developments such as nanostructured alloys, grain boundary engineering,eutectic systems, cryogenic alloys, thin films, micro-nano-lattice structures, additive manufacturing, high entropy metallic glasses, nano-precipitate strengthened alloys, composition modulation, alloy fibers, and refractory systems. In the following section, the emphasis shifts to functional materials, exploring HEAs as catalysts, magneto-caloric materials, corrosion-resistant alloys, radiation-resistant alloys, hydrogen storage systems, and materials for biomedicine. Additionally, the review encompasses functional high-entropy materials outside the realm of alloys, including thermoelectric, quantum dots, nanooxide catalysts, energy storage materials, negative thermal expansion ceramics,and high-entropy wave absorption materials. The paper concludes with an outlook, discussing future directions and potential growth areas in the field. Through this comprehensive review,researchers, engineers, and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： Cutting-edge structural materials Cutting-edgefunctional materials High entropy alloys

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高桩承台连续刚构桥的调谐隔震设计方法

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中国公路学报 2024年第7期37卷 137-146页

作者：赵灿晖杨正浩袁小聪肖仕周任小朋廖文彬西南交通大学土木工程学院四川成都610031 抗震工程技术四川省重点实验室四川成都610031 中国路桥工程有限责任公司北京100011

高桩承台连续刚构桥具有基础抗侧移刚度小的特点,能有效延长结构自振周期,减小地震内力响应。为更好地利用高桩承台的柔性变形,基于质量调谐原理,提出了一种调谐隔震设计方法。该方法将连续刚构桥简化为2自由度体系,建立调谐隔震的力学... 详细信息

高桩承台连续刚构桥具有基础抗侧移刚度小的特点,能有效延长结构自振周期,减小地震内力响应。为更好地利用高桩承台的柔性变形,基于质量调谐原理,提出了一种调谐隔震设计方法。该方法将连续刚构桥简化为2自由度体系,建立调谐隔震的力学模型,将随机振动作为外部激励,以墩底弯矩最小为优化目标,采用频域解法建立了墩底弯矩响应与桥墩-桩基的频率比f、主梁-承台质量比μ的函数关系。通过枚举法,得出最优频率比与质量比的函数关系,进而求出优化后的桥墩刚度和桩基刚度。计算结果表明:连续刚构桥的2自由度简化模型可以准确反映其主要动力特性,经调谐隔震优化设计后,墩顶和墩底弯矩的减震率分别可达46.5%和58.7%,验证了调谐隔震方法可有效控制高桩承台连续刚构桥的地震响应。

关键词：桥梁工程调谐隔震简化模型连续刚构桥随机振动最优频率比

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辽代斡鲁朵内的部族组织研究

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史学集刊 2024年第1期 134-144页

作者：杨逍北京师范大学历史学院北京100875

斡鲁朵内的部族组织由石烈、抹里和瓦里三种基层单位构成,属于“部族”组织,而非“帐族”组织,有相对固定的驻牧地,不追随辽帝捺钵。在辽朝中期以前,辽帝通过建立隶属于斡鲁朵的石烈和抹里组织,削弱契丹部族势力。在辽朝中期以后,受到... 详细信息

斡鲁朵内的部族组织由石烈、抹里和瓦里三种基层单位构成,属于“部族”组织,而非“帐族”组织,有相对固定的驻牧地,不追随辽帝捺钵。在辽朝中期以前,辽帝通过建立隶属于斡鲁朵的石烈和抹里组织,削弱契丹部族势力。在辽朝中期以后,受到自然环境恶化和契丹部族势力式微等因素的影响,斡鲁朵内的石烈和抹里组织逐渐被迁离“契丹故地”,转向对奚人的镇戍。瓦里是由契丹贵族罪犯组成的基层组织,是辽帝削弱契丹贵族势力的工具。瓦里的分布地与契丹“分地”的继承制度有关。

关键词：斡鲁朵宫部族组织驻地分布

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The issues on the commercialization of perovskite solar cells

Materials Futures

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Materials Futures 2024年第2期3卷 1-35页

作者： Lixiu Zhang Yousheng Wang Xiangchuan Meng Jia Zhang Pengfei Wu Min Wang Fengren Cao Chunhao Chen Zhaokui Wang Fu yang xiaodong Li Yu Zou Xi Jin Yan Jiang Hengyue Li Yucheng Liu Tongle Bu Buyi Yan Yaowen Li Junfeng Fang Lixin xiao Junliang yang Fuzhi Huang Shengzhong Liu Jizhong Yao Liangsheng liao Liang Li Fei Zhang Yiqiang Zhan Yiwang Chen Yaohua Mai Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632People’s Republic of China Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031People’s Republic of China School of Information Science and Technology Fudan UniversityShanghai 200433People’s Republic of China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072People’s Republic of China School of Physical Science and Technology Soochow UniversitySuzhou 215006People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Institute of optoelectronics Fudan UniversityShanghai 200433People’s Republic of China College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123People’s Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Department of PhysicsPeking UniversityBeijing 100871People’s Republic of China College of Biophotonics South China Normal UniversityGuangzhou 510631People’s Republic of China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Physics and Electronics Central South UniversityChangsha 410083People’s Republic of China School of Materials Science and Engineering Shaanxi Normal UniversityXi’an 710119People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Microquanta semiconductor Hangzhou 311121People’s Republic of China

Perovskite solar cells have aroused a worldwide research upsurge in recent years due to their soaring photovoltaic performance,ease of solution processing,and low *** power conversion efficiency record is constantly being broken and has recently reached 26.1%in the lab,which is comparable to the established photovoltaic technologies such as crystalline silicon,copper indium gallium selenide and cadmium telluride(CdTe)solar ***,perovskite solar cells are standing at the entrance of industrialization,where huge opportunities and risks ***,towards commercialization,challenges of up-scaling,stability and lead toxicity still remain,the proper handling of which could potentially lead to the widespread adoption of perovskite solar cells as a low-cost and efficient source of renewable *** review gives a holistic analysis of the path towards commercialization for perovskite solar cells.A comprehensive overview of the current state-of-the-art level for perovskite solar cells and modules will be introduced first,with respect to the module efficiency,stability and current status of *** will then discuss the challenges that get in the way of commercialization and the corresponding strategies to address them,involving the upscaling,the stability and the lead toxicity *** into the future direction of commercialization of perovskite photovoltaics was also provided,including the flexible perovskite cells and modules and perovskite indoor ***,the future perspectives towards commercialization are put forward.

关键词： commercializations perovskite solar cells state-of-the-art level challenges and perspectives indoor photovoltaics

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ARHGAP4 variants are associated with X-linked early-onset temporal lobe epilepsy

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World Journal of Pediatrics 2024年第8期20卷 859-867页

作者： Yuan-Yuan Hu Wang Song Zhi-Gang Liu Xing-Guang Ye Hong-Wei Zhang Xin Li Jun-Xia Luo Peng-Yu Wang Jie Wang xiao-Fei Lin Hong-Li Zhu Wei-Ping liao Bin Li Xu-Qin Chen Department of Neurology Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of ChinaInstitute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical UniversityChang-gang-dong RoadGuangzhou510260China Epilepsy Center and Neurology Department of Children’s Hospital of Soochow University Suzhou215000JiangsuChina Department of pediatrics Foshan Women and Children HospitalFoshan528000China Children’s Hospital Affiliated to Shandong University Jinan250000ShandongChina Second Hospital of Shandong University Jinan250000China Huai’an Maternity&Child Healthcare Hospital Huai’an223001China Institute of Neuroscience of Guangzhou Medical University and Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China Chang-gang-dong Road 250Guangzhou510260GuangdongChina

The ARHGAP4 gene(OMIM*300,023),also known as Rho GTPase activating protein 4,encodes a protein that has an essential role in the regulation of small ***4 message RNA(mRNA)is highly expressed during the developing and adult nervous *** the protein level,ARHGAP4 is exclusively present in certain brain regions,such as the mesial temporal lobe,specifically the stratum lucidum of the CA3 region[1].ARHGAP4 enhances the GTPase activity of Rho proteins,which modulate morphological alterations in neuron development and synaptic plasticity by interacting with the actin cytoskeleton[2].

关键词： epilepsy alterations stratum

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车联网V2I场景下基于GNN的SC-FDMA智能信道估计

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电子学报 2024年第3期52卷 772-782页

作者：廖勇尹子松田肖懿重庆大学微电子与通信工程学院重庆400044

随着车联网的迅猛发展,车对路基础设施(Vehicle to Infrastructure,V2I)通信对车联网的可靠性和时延提出了更高的要求,而信道估计是接收机高可靠低时延通信的重要保障.为解决传统信道插值算法不能有效拟合V2I信道快时变特性、自适应多... 详细信息

随着车联网的迅猛发展,车对路基础设施(Vehicle to Infrastructure,V2I)通信对车联网的可靠性和时延提出了更高的要求,而信道估计是接收机高可靠低时延通信的重要保障.为解决传统信道插值算法不能有效拟合V2I信道快时变特性、自适应多普勒频移能力弱和传统神经网络可解释性不强的问题,本文提出基于图神经网络(Graph Neural Network,GNN)的单载波频分多址(Single Carrier-Frequency Division Multiple Access,SC-FDMA)智能信道估计算法.该算法将信道频率响应中的数据点作为图的节点、符号间时域相关性作为边,将图化后的数据送入GraphSAGE信道插值器(GraphSAGE Channel Interpolator,GCI)中,通过边更新、聚合操作、节点更新三大模块进行网络训练,同时采用多普勒频移矢量作为节点特征控制网络拟合不同多普勒条件的信道,使得网络具备可解释性.最后,系统仿真验证了在不同速度环境下算法的有效性和鲁棒性,较线性插值、样条插值以及全连接网络,本文所提GCI在低、中和高速移动环境下具有最优的误码率(Bit Error Rate,BER)和归一化均方误差(Normalized Mean Square Error,NMSE)性能,特别地,在200 km/h高速移动条件下GCI的优势更为明显.

关键词：车联网 V2I 双选衰落信道高速移动多普勒频移 GNN 信道估计信道频率响应

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Suppression of MyD88 disturbs gut microbiota and activates the NLR pathway and hence fails to ameliorate DsS-inducedcolitis

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Precision Clinical Medicine 2024年第2期7卷 146-158页

作者： Jun-hua Li Yu Chen Zheng-hao Ye Li-ping Chen Jia-xin Xu Jian Han Lin Xie Shuai Xing De-an Tian Ursula Seidler Jia-zhi liao Fang xiao Department of Nephrology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Gastroenterology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Institute of Organ Transplantation Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Gastroenterology Hepatology and EndocrinologyHannover Medical SchoolHannover 30625Germany

Background:Myeloid differentiation factor 88(MyD88)is the core adaptor for Toll-like receptors defending against microbial invasion and initiating a downstream immune response during microbiota-host ***,the role of MyD88 in the pathogenesis of inflammatory bowel disease is *** study aims to investigate the impact of MyD88 on intestinal inflammation and ***:MyD88 knockout(MyD88^(-/-))mice and the MyD88 inhibitor(TJ-M2010-5)were used to investigate the impact of MyD88 on acute dextran sodium sulfate(Dss)-induced *** activity index,colon length,histological score,and inflammatory cytokines were examined to evaluate the severity of *** transcriptome analysis and 16S rDNA sequencing were used to detect the potential ***:In an acute DSS-colitis model,the severity of colitis was not alleviated in MyD88^(-/-)mice and TJ-M2010-5-treated mice,despite significantly lower levels of NF-kB activation being exhibited compared to control ***,16S rDNA sequencing and RNA transcriptome analysis revealed a higher abundance of intestinal Proteobacteria and an up-regulation of the nucleotide oligomerization domain-like receptors(NLRs)signaling pathway in colitis mice following MyD88 *** blockade of the NLRs signaling pathway or elimination of gut microbiota with broad-spectrum antibiotics in DsS-induced colitis mice treated with TJ-M2010-5 ameiorated the disease severity,which was not improved solely by MyD88 *** treatment with broad-spectrum antibiotics,downregulation of the NLR signaling pathway was ***:Our study suggests that the suppression of MyD88 might be associated with unfavorable changes in the composition of gut microbiota,leading to NLR-mediated immune activation and intestinal inflammation.

关键词： microbiota innate immunity myeloid differentiation factor 88,MyD88 inhibitor NOD-like receptor inflammatory bowel disease

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Gallic acid ameliorates colitis by modulating the Treg/Th17 balance via microbiota-derived secondary bile acids

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Food Science and Human Wellness 2024年

作者： xiao Zhang Yun Leng Qian Zhang Hansheng Yu Ziqiong liao Jiaxuan Xia Chong Ma Kun Liu Yuefeng Zhang Yanjun Hong Hao Li Zhiyong Xie School of Pharmaceutical Sciences (Shenzhen)， Sun Yat-sen University The Seventh Affiliated Hospital， Sun Yat-sen University Shenzhen Key Laboratory of Chinese Medicine Active Substance Screening and Translational Research， Sun Yat-sen University

Gallic acid (GA)， a plant phenol ubiquitously present in fruits and vegetables， has demonstrated efficacy in ameliorating ulcerative colitis (UC). Despite previous reports， the precise mechanism of GA's therapeutic action remains elusive. Herein， the present work aims to delineate the mechanism underlying the anti-UC effects of GA by focusing on the interplay of gut microbiota， microbial and host cometabolites， and gut immune regulation. The findings revealed that GA treatment improved the colitis symptoms and systematic inflammatory response， reliant on gut microbiota， as evidenced by microbiota depletion and fecal microbiota transplantation. According to the 16s rDNA sequencing results， GA altered the gut microbiota community structure and upregulated the biosynthesis of secondary bile acids (SBAs). Metabolomics and flow cytometry analysis (FCS) revealed a substantial increase in SBAs production， including UDCA， LCA， 3-oxo-LCA and IsoalloLCA， which further upregulated the proportion of regulatory T (Treg) cells and downregulated the proportion of T helper type 17 (Th17) cells in the colon， ultimately resulting in an improved Treg/Th17 balance. Further FCS and real-time quantitative PCR assays provided mechanistic insights， demonstrating that UDCA and IsoalloLCA facilitate Treg cell differentiation through the upregulation of nuclear hormone receptor 4A1 (NR4A1). This research elucidated that GA effectively mitigates colitis by modulating the Treg/Th17 balance， facilitated by the enhanced synthesis of microbiota-derived SBAs. These insights unveil innovative pathways through which GA exerts its anti-UC effects， emphasizing the potential therapeutic benefits of incorporating a GA-enriched diet into UC management.

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钢-UHPC组合桥面板横向负弯矩区受弯性能研究

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工程力学 2024年第2期41卷 112-124页

作者：方志武霄楠谭星宇廖原阳晏唐守峰湖南大学土木工程学院湖南长沙410082 风工程与桥梁工程湖南省重点实验室湖南长沙410082 湖北省交通规划设计院股份有限公司湖北武汉430000 湖北交通投资集团有限公司湖北武汉430000

为明确横向负弯矩作用下,剪力键形式、接缝设置情形、配筋率和钢混界面黏结状态等参数对钢-超高性能混凝土(ultra-high-performance concrete,UHPC)组合板受力性能的影响,完成了8块组合板局部足尺模型静力弯曲试验及有限元参数分析。试... 详细信息

为明确横向负弯矩作用下,剪力键形式、接缝设置情形、配筋率和钢混界面黏结状态等参数对钢-超高性能混凝土(ultra-high-performance concrete,UHPC)组合板受力性能的影响,完成了8块组合板局部足尺模型静力弯曲试验及有限元参数分析。试验结果表明:开孔板(perfobond leiste,PBL)试件的名义开裂强度(对应最大裂缝宽度为0.05 mm)较栓钉试件提高16.8%;矩形齿缝试件的名义开裂强度较整浇试件降低16%~23%;UHPC层钢筋配筋率从1.96%增加到2.82%时,名义开裂强度提高16.2%;钢板-UHPC界面涂油除黏PBL试件的初裂强度和名义开裂强度较界面黏结试件分别降低10.1%和5.8%。数值分析结果表明:PBL贯穿钢筋的存在、PBL和栓钉间距的减小能有效提高组合板的开裂后刚度;PBL开孔钢板上的孔径和孔间距对组合板的受力性能影响较小。

关键词：桥梁工程超高性能混凝土(UHPC) 组合板剪力键受弯性能

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增值税免税立法类型化及完善

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税务与经济 2024年第4期 4-14,F0002页

作者：杨小强廖璐黄永新中山大学法学院广东广州510275 中国财政科学研究院北京100142 广东省高级人民法院广东广州510655

作为增值税的例外情形,免税常作为改善增值税累退性的政策工具。当前,我国增值税免税立法存在税收法定原则贯彻不足、综合性立法缺失、免税类型设置不够科学等情形。考察国际增值税立法,无论是传统型抑或是现代型增值税制国家,其免税政... 详细信息

作为增值税的例外情形,免税常作为改善增值税累退性的政策工具。当前,我国增值税免税立法存在税收法定原则贯彻不足、综合性立法缺失、免税类型设置不够科学等情形。考察国际增值税立法,无论是传统型抑或是现代型增值税制国家,其免税政策背后都蕴含着充分的利益考量。我国在增值税立法中可以适时清理不合时宜的免税立法、简并免税项目,并完善免税规范性文件内容及制定程序。同时,修改法定免税条款和专项优惠条款,并尝试引入免税评估条款。

关键词：增值税免税类型化增值税立法

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