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Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu Zhang Aihua Yuan hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

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Photo‑Energized MoS_(2)/CNT Cathode for High‑Performance Li–CO_(2)Batteries in a Wide‑Temperature Range

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Nano-Micro Letters 2025年第1期17卷 160-175页

作者： Tingsong hu Wenyi Lian Kang hu Qiuju Li Xueliang Cui Tengyu Yao Laifa Shen Jiangsu Key Laboratory of Materials and Technologies for Energy Storage College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Li–CO_(2) batteries are considered promising energy storage systems in extreme environments such as Mars;however,severe performance degradation will occur at a subzero temperature owning to the sluggish reaction ***,a photo-energized strategy adopting sustainable solar energy in wide working temperature range Li–CO_(2) battery was achieved with a binder-free MoS_(2)/carbon nanotube(CNT)photo-electrode as *** unique layered structure and excellent photoelectric properties of MoS_(2) facilitate the abundant generation and rapid transfer of photo-excited carriers,which accelerate the CO_(2) reduction and Li_(2)CO_(3) decomposition upon *** illuminated battery at room temperature exhibited high discharge voltage of 2.95 V and mitigated charge voltage of 3.27 V,attaining superior energy efficiency of 90.2%and excellent cycling stability of over 120 *** at an extremely low temperature of−30℃,the battery with same electrolyte can still deliver a small polarization of 0.45 V by the photoelectric and photothermal synergistic mechanism of MoS_(2)/CNT *** work demonstrates the promising potential of the photo-energized wide working temperature range Li–CO_(2) battery in addressing the obstacle of charge overpotential and energy efficiency.

关键词： Li-CO_(2)batteries Photo-energized Wide operation-temperature Kinetics MoS_(2)

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SMSTracker:A Self-Calibration Multi-Head Self-Attention Transformer for Visual Object Tracking

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Computers, Materials & Continua 2024年第7期80卷 605-623页

作者： zhongyang Wang hu Zhu Feng Liu School of Communications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing210003China

Visual object tracking plays a crucial role in computer *** recent years,researchers have proposed various methods to achieve high-performance object *** these,methods based on Transformers have become a research hotspot due to their ability to globally model and contextualize ***,current Transformer-based object tracking methods still face challenges such as low tracking accuracy and the presence of redundant feature *** this paper,we introduce self-calibration multi-head self-attention Transformer(SMSTracker)as a solution to these *** employs a hybrid tensor decomposition self-organizing multihead self-attention transformermechanism,which not only compresses and accelerates Transformer operations but also significantly reduces redundant data,thereby enhancing the accuracy and efficiency of ***,we introduce a self-calibration attention fusion block to resolve common issues of attention ambiguities and inconsistencies found in traditional trackingmethods,ensuring the stability and reliability of tracking performance across various *** integrating a hybrid tensor decomposition approach with a self-organizingmulti-head self-attentive transformer mechanism,SMSTracker enhances the efficiency and accuracy of the tracking *** results show that SMSTracker achieves competitive performance in visual object tracking,promising more robust and efficient tracking systems,demonstrating its potential to providemore robust and efficient tracking solutions in real-world applications.

关键词： Visual object tracking tensor decomposition transformer self-attention

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在线基体消除-离子色谱法测定甲醇汽油中的无机阴离子

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现代仪器 2012年第4期18卷 15-17页

作者：曹盛林胡忠阳吴述超叶明立浙江大学化学系杭州310028 赛默飞世尔科技(中国)有限公司上海201203

建立一种在线消除基体、直接进样测定甲醇汽油中无机阴离子的离子色谱(IC)方法。样品经90%(V/V)甲醇溶解、稀释后直接进样,通过在线基体消除和预富集,采用IonPac AS23(250×4mm)分析柱分离,淋洗液为4.5mmol/L Na2CO3-0.8mmol/L NaHCO3,... 详细信息

建立一种在线消除基体、直接进样测定甲醇汽油中无机阴离子的离子色谱(IC)方法。样品经90%(V/V)甲醇溶解、稀释后直接进样,通过在线基体消除和预富集,采用IonPac AS23(250×4mm)分析柱分离,淋洗液为4.5mmol/L Na2CO3-0.8mmol/L NaHCO3,流速1.2 mL/min,采用Dionex DS6电导检测器检测,外标法定量。Cl-和SO42-的线性范围分别为0.05～5.0 mg/L,0.5～10 mg/L,相关系数分别为0.9998和0.9999,加标回收率为92.5%～96.7%,相对标准偏差RSD(n=8)<2.0%,检出限(以信噪比S/N=3计)分别为0.02 mg/L,0.08 mg/L。该方法用于甲醇汽油中无机阴离子的测定,结果令人满意。

关键词：离子色谱甲醇汽油氯离子硫酸根

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

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A Novel Model for Describing Rail Weld Irregularities and Predicting Wheel-Rail Forces Using a Machine Learning Approach

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 555-577页

作者： Linlin Sun Zihui Wang Shukun Cui Ziquan Yan Weiping hu Qingchun Meng State Key Laboratory of High-Speed Railway Track System China Academy of Railway Sciences Corporation LimitedBeijing100081China Railway Engineering Research Institute China Academy of Railway Sciences Corporation LimitedBeijing100081China School of Aeronautic Science and Engineering Beihang UniversityBeijing100191China

Rail weld irregularities are one of the primary excitation sources for vehicle-track interaction dynamics in modern high-speed *** can cause significant wheel-rail dynamic interactions,leading to wheel-rail noise,component damage,and *** researchers have employed the vehicle-track interaction dynamic model to study the dynamic interactions between wheel and rail induced by rail weld geometry ***,the cosine wave model used to simulate rail weld irregularities mainly focuses on the maximum value and neglects the geometric *** this study,novel theoretical models were developed for three categories of rail weld irregularities,based on measurements of the high-speed railway from Beijing to *** vertical dynamic forces in the time and frequency domains were compared under different running *** forces generated by the rail weld irregularities that were measured and modeled,respectively,were compared to validate the accuracy of the proposed ***,based on the numerical study,the impact force due to rail weld irrregularity is modeled using an Artificial Neural Network(ANN),and the optimum combination of parameters for this model is *** results showed that the proposed model provided a more accurate wheel/rail dynamic evaluation caused by rail weld irregularities than that established in the *** ANN model used in this paper can effectively predict the impact force due to rail weld irrregularity while reducing the computation time.

关键词： Rail weld irregularity high-speed railway vehicle-track coupled dynamics wheel/rail dynamic vertical force artificial neural networks

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Spin-glass behavior in the competing CoCrGaO_(4)cubic spinel system

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Nano Research 2025年第1期18卷 501-507页

作者： Jiyu hu Jiangli Ni Zhenfa Zi Chaocheng Liu School of Physics and Materials Engineering Hefei Normal UniversityHefei 230009China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China

Spin glasses(SGs),generally defined as disordered systems with randomized competing interactions,are widely investigated complex *** the ground states of spin glasses is crucial for understanding the nature of disordered magnets and many other physical manifestations,while also helping to solve some hard combinatorial optimization problems across multiple ***,the intrinsic cause of SG has always been elusive,especially in spinel oxide ***,we report the SG behavior observed in the cubic spinel oxides CoCrGaO_(4),and provide a comprehensive understanding of its intrinsic *** results indicate a frustrated state under multi-magnetic competition,and the features of SG are confirmed by susceptibility *** fitting parameters ofτ0,T0,and zv of isothermal remanent magnetization further reveal the relaxation behavior and strong spin ***,the varying exchange coupling under different temperatures and magnetic fields is unveiled,which should be responsible for the disordered *** studies unravel the underlying mechanism responsible for doping-induced magnetic frustration and introduce CoCrGaO_(4)as a potential platform for investigating spin glass behavior,thereby advancing fundamental research on frustrated magnetism within the spinel system.

关键词： spin glass(SG) magnetic frustration magnetic competition spinel ferrites

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低密度脂蛋白受体基因C1773T多态性与长沙汉族人群脑出血的相关性研究及其对血脂水平的影响

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中国神经精神疾病杂志 2010年第3期36卷 145-148页

作者：曾艺张乐马明明杨期东胡中扬刘宝琼夏健刘运海许宏伟胡治平王红星中南大学湘雅二医院老年病学科长沙410011 中南大学湘雅医院神经内科中南大学湘雅二医院神经内科

目的探讨低密度脂蛋白受体基因(low density lipoprotein receptor gene,LDLR)C1773T多态性与长沙汉族人群脑出血的关系及其对血脂水平的影响。方法采用SNaPshot和DNA直接测序法检测2005年1月至2009年1月在湘雅医院神经内科就诊的273例... 详细信息

目的探讨低密度脂蛋白受体基因(low density lipoprotein receptor gene,LDLR)C1773T多态性与长沙汉族人群脑出血的关系及其对血脂水平的影响。方法采用SNaPshot和DNA直接测序法检测2005年1月至2009年1月在湘雅医院神经内科就诊的273例脑出血患者(脑出血组)和140名健康对照人群(对照组)的LDLR基因C1773T多态;氧化酶法测定血清甘油三酯、总胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇水平。结果脑出血组和对照组的LDLR-C1773T多态CC/CT/TT基因型频率分别为0.703/0.278/0.019、0.707/0.250/0.043,两组的C、T等位基因频率分别为0.842/0.158、0.832/0.168。两组相比基因型频率及等位基因频率无统计学差异(P>0.05);脑出血组和对照组中LDLR基因C1773T多态CC、CT与TT基因型间血脂水平无统计学差异(P>0.05)。结论LDLR-C1773T多态T等位基因与长沙汉族人群脑出血的发病及其血脂水平可能无关。

关键词：低密度脂蛋白受体基因基因多态脑出血血脂

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Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

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Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi Yang Xuerui Pang Yibing Yan Yue Wu Zhi Geng Wenjie hu Panpan hu Xingqi Wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

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KLK1基因rs3212855和rs5515多态性与长沙地区汉族人群脑出血的关联研究

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中南大学学报（医学版） 2010年第12期35卷 1225-1229页

作者：张乐胡中扬杨杰李蜀渝曾艺刘宝琼杜小平夏健刘运海许宏伟杨期东中南大学湘雅医院神经内科长沙410008 中南大学湘雅二医院老年病科长沙410011

目的:分析长沙地区汉族人群脑出血与组织型激肽释放酶(tissue Kallikrein,KLK1)基因多态性的关系。方法:收集长沙地区汉族人群中273例散发性脑出血患者和140例正常对照者的外周血标本。采用多重单碱基延伸单核苷酸多态性(SNP)分型技术(S... 详细信息

目的:分析长沙地区汉族人群脑出血与组织型激肽释放酶(tissue Kallikrein,KLK1)基因多态性的关系。方法:收集长沙地区汉族人群中273例散发性脑出血患者和140例正常对照者的外周血标本。采用多重单碱基延伸单核苷酸多态性(SNP)分型技术(Snapshot)和DNA测序法检测KLKI基因rs3212855及rs5515多态性位点在脑出血患者及正常人群中的分布情况。结果:在本研究样本中未能证实rs5515是多态性位点。脑出血组及对照组KLK1基因rs3212855多态性位点基因型分布和等位基因频率差异无统计学意义(P(0.05)。脑出血组rs3212855多态性位点各基因型亚组间血压水平差异无统计学意义(P(0.05);对照组rs3212855位点各基因型亚组间血压水平差异无统计学意义(P(0.05)。结论:KLK1基因rs3212855和rs5515位点与脑出血无关。

关键词：组织型激肽释放酶单核苷酸多态性脑出血长沙汉族人群

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