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Near-perfect replication on amorphous alloys through active force modulation based on machine learning/neural network parameter prediction

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 181-191页

作者： Senkuan Meng Zheng wang Ruisong Zhu Ruijie Liu Jiang Ma Lina Hu Weihua wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) School of Materials Science and Engineering Shandong University College of Mechatronics and Control Engineering Shenzhen University Songshan Lake Materials Laboratory Institute of Physics Chinese Academy of Sciences

As a microforming technique, micro/nano-structural replication possesses advantages of high precision and efficiency. With the remarkable superplasticity in the supercooled liquid region, amorphous alloys or metallic glasses(MGs) are regarded as ideal materials for miniature fabrication. However, due to the intrinsic metastable nature of supercooled liquids, the design of imprinting processes for MGs poses a challenge. In the past, process parameters have largely relied on trial-and-error *** this work, a low-frequency active force modulation system is employed to apply a stable, precise, and real-time feedback stress field for imprinting of MG samples. Low-frequency vibrations can facilitate the filling of microstructures on the template surface by reducing the effective viscosity of the supercooled liquid. With the dataset composed of orthogonal experiments, a machine learning strategy based on back-propagation(BP) neural networks was utilized to construct a 3D parameter space for temperature, stress, and time, and to predict the corresponding filling ratio. Furthermore, the optimal combination of imprinting process parameters was identified, and its filling ratio was experimentally validated to reach as high as 0.94. The near-perfect replication of microstructures confirms the superiority of the active force modulation system and the data-driven strategy of machine learning-assisted parameter design. At the same time, this one-step microforming process provides a new approach to addressing the accuracy-cost trade-off dilemma in precision manufacturing.

关键词： metallic glass amorphous alloy microforming imprinting machine learning

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Local-contrastive-learning machine with both generalization and adversarial robustness: A statistical physics analysis

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 109-123页

作者： Mingshan Xie Yuchen wang Haiping Huang PMI Lab School of Physics Sun Yat-sen University Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Sun Yat-sen University

Distinct from human cognitive processing, deep neural networks trained by backpropagation can be easily fooled by adversarial examples. To design a semantically meaningful representation learning, we discard backpropagation, and instead, propose a local contrastive learning, where the representations for the inputs bearing the same label shrink(akin to boson) in hidden layers,while those of different labels repel(akin to fermion). This layer-wise learning is local in nature, being biologically plausible.A statistical mechanics analysis shows that the target fermion-pair-distance is a key parameter. Moreover, the application of this local contrastive learning to MNIST benchmark dataset demonstrates that the adversarial vulnerability of standard perceptron can be greatly mitigated by tuning the target distance, i.e., controlling the geometric separation of prototype manifolds.

关键词： machine learning statistical mechanics adversarial robustness neural networks

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襟翼高升力系统和结构部件飞机维修手册程序验证研究

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航空工程进展 2021年第5期12卷 80-86页

作者：孙宏丽王清淼马文帅王宏朝张雅杰上海飞机客户服务有限公司技术出版物部上海200241

目前,我国民用飞机维修手册验证工作尚无相关标准和规范,亟需开展相关研究工作,争取早日建立完备的手册验证体系。在国产某型客机试飞阶段,结合试飞改装工作进行大批量维修手册操作验证工作,提出手册验证操作的技术要求、操作流程和实... 详细信息

目前,我国民用飞机维修手册验证工作尚无相关标准和规范,亟需开展相关研究工作,争取早日建立完备的手册验证体系。在国产某型客机试飞阶段,结合试飞改装工作进行大批量维修手册操作验证工作,提出手册验证操作的技术要求、操作流程和实施要点;以襟翼高升力系统和结构部件的飞机维修手册验证程序为例,从实际操作可行性和省时性角度出发,开展手册验证计划编排和验证实施方法设计,总结维修操作难度较大的襟翼拆装程序编写实施要点、注意事项、常见维修性问题及改进方法,为后续验证工作提出建议。

关键词：襟翼高升力系统结构部件飞机维修手册手册验证专项验证

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半夏泻心汤含药肠吸收液对胃癌微环境中PMN-MDSCs迁移侵袭的影响

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中国实验方剂学杂志 2023年第10期29卷 48-57页

作者：魏晶晶朱中博刘喜平李沛清陈启明戴丽蓉施丽娟段海婧王庆苗甘肃中医药大学甘肃省中药新产品创制工程实验室甘肃省中医方药挖掘与创新转化重点实验室兰州730000 兰州大学第一医院兰州730013

目的:观察半夏泻心汤含药肠吸收液对胃癌微环境中多形核髓系来源抑制细胞(PMN-MDSCs)迁移侵袭的影响。方法:制备含生药量0.63 g·mL^(-1)的半夏泻心汤含药肠吸收液,以Transwell小室将胃癌细胞与PMN-MDSCs非接触共培养建立胃癌微环境模型... 详细信息

目的:观察半夏泻心汤含药肠吸收液对胃癌微环境中多形核髓系来源抑制细胞(PMN-MDSCs)迁移侵袭的影响。方法:制备含生药量0.63 g·mL^(-1)的半夏泻心汤含药肠吸收液,以Transwell小室将胃癌细胞与PMN-MDSCs非接触共培养建立胃癌微环境模型,采用细胞增殖与活性检测-8(CCK-8)法筛选半夏泻心汤含药肠吸收液对PMN-MDSCs的最佳干预浓度及时间,用于后续实验,分为空白组、模型组、FAK抑制剂组及半夏泻心汤组(26%、18%、10%半夏泻心汤含药肠吸收液),采用细胞划痕实验和Transwell实验检测PMN-MDSCs的迁移和侵袭能力,酶联免疫吸附测定法(ELISA)检测肿瘤微环境中血管内皮细胞生长因子(VEGF)、基质金属蛋白酶-9(MMP-9)细胞因子表达,蛋白免疫印迹法(Western blot)检测PMN-MDSCs通路相关蛋白局部黏着斑激酶(FAK)、磷酸化(p)-FAK、蛋白酪氨酸激酶(Src)、磷酸化(p)-Src蛋白表达水平。结果:与24 h比较,作用48 h 5%、50%、75%、100%半夏泻心汤含药肠吸收液对PMN-MDSCs的抑制率均有升高(P<0.05,P<0.01),与作用48 h比较,培养72 h 50%半夏泻心汤含药肠吸收液对PMN-MDSCs的抑制率低于48 h(P<0.01),5%、100%半夏泻心汤含药肠吸收液略高于48 h(P<0.05,P<0.01),其余浓度抑制率差异无统计学意义,且48 h半数抑制浓度(IC_(50))为18.09%,说明18%半夏泻心汤含药肠吸收液在48 h为最佳干预浓度及时间;与空白组比较,模型组PMN-MDSCs迁移距离显著增大(P<0.01),迁移及侵袭数量显著增多(P<0.01);与模型组比较,FAK抑制剂组、半夏泻心汤含药肠吸收液组PMN-MDSCs的迁移距离均显著减小(P<0.01),迁移及侵袭数量显著减少(P<0.01),以26%含药肠吸收液组最为显著(P<0.01);与空白组比较,模型组PMNMDSCs通路相关蛋白FAK、p-FAK、Src、p-Src表达显著升高(P<0.01),VEGF、MMP-9细胞因子表达均显著上升(P<0.01)。与模型组比较,FAK抑制剂组、半夏泻心汤含药肠吸收液组(26%、18%、10%)PMN-MDSCs FAK、p-FAK、Src蛋白表达降低(P<0.01),FAK抑制剂组、半夏泻心汤含药肠吸收液组(18%)p-Src蛋白表达显著降低(P<0.01),VEGF、MMP-9细胞因子表达显著降低(P<0.01)。结论:半夏泻心汤含药肠吸收液通过下调胃癌微环境PMN-MDSCs FAK信号通路蛋白FAK、p-FAK、Src、p-Src的表达,抑制PMN-MDSCs迁移侵袭。

关键词：胃癌微环境髓源性抑制细胞半夏泻心汤黏着斑激酶(FAK)信号通路

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Flexible Graphene Field‑Effect Transistors and Their Application in Flexible Biomedical Sensing

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Nano-Micro Letters 2025年第2期17卷 252-313页

作者： Mingyuan Sun Shuai wang Yanbo Liang Chao wang Yunhong Zhang Hong Liu Yu Zhang Lin Han Institute of Marine Science and Technology Shandong UniversityQingdao 266237ShandongPeople’s Republic of China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongPeople’s Republic of China School of Integrated Circuits Shandong UniversityJinan 250100ShandongPeople’s Republic of China Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application Jinan250100ShandongPeople’s Republic of China

Flexible electronics are transforming our lives by making daily activities more *** to this innovation are field-effect transistors(FETs),valued for their efficient signal processing,nanoscale fabrication,low-power consumption,fast response times,and ***,known for its exceptional mechanical properties,high electron mobility,and biocompatibility,is an ideal material for FET channels and *** combination of graphene and FETs has given rise to flexible graphene field-effect transistors(FGFETs),driving significant advances in flexible electronics and sparked a strong interest in flexible biomedical ***,we first provide a brief overview of the basic structure,operating mechanism,and evaluation parameters of FGFETs,and delve into their material selection and patterning *** ability of FGFETs to sense strains and biomolecular charges opens up diverse application *** specifically analyze the latest strategies for integrating FGFETs into wearable and implantable flexible biomedical sensors,focusing on the key aspects of constructing high-quality flexible biomedical ***,we discuss the current challenges and prospects of FGFETs and their applications in biomedical *** review will provide valuable insights and inspiration for ongoing research to improve the quality of FGFETs and broaden their application prospects in flexible biomedical sensing.

关键词： Flexible Graphene Field-effect transistor Wearable Implantable Biosensor

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MixerKT:A Knowledge Tracing Model Based on Pure MLP Architecture

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Computers, Materials & Continua 2025年第1期82卷 485-498页

作者： Jun wang Mingjie wang Zijie Li Ken Chen Jiatian Mei Shu Zhang Key Laboratory of Education Informatization for Nationalities Ministry of EducationYunnan Normal UniversityKunming650000China Yunnan Key Laboratory of Smart Education Yunnan Normal UniversityKunming650000China

In the field of intelligent education,the integration of artificial intelligence,especially deep learning technologies,has garnered significant *** tracing(KT)plays a pivotal role in this field by predicting students’future performance through the analysis of historical interaction data,thereby assisting educators in evaluating knowledgemastery and tailoring instructional *** knowledge tracingmethods,largely based on Recurrent Neural Networks(RNNs)and Transformer models,primarily focus on capturing long-term interaction patterns in sequential ***,these models may neglect crucial short-term dynamics and other relevant *** paper introduces a novel approach to knowledge tracing by leveraging a pure Multilayer Perceptron(MLP)*** proposeMixerKT,a knowledge tracing model based on theHyperMixer framework,which uniquely integrates global and localMixer feature *** architecture enables more effective extraction of both long-terminteraction trends and recent learning behaviors,addressing limitations in currentmodels thatmay overlook these key *** evaluations on twowidely-used datasets,ASSIS Tments2009 and Algebra2005,demonstrate that MixerKT consistently outperforms several state-of-the-art models,including DKT,SAKT,and Separated Self-Attentive Neural Knowledge Tracing(SAINT).Specifically,MixerKT achieves higher prediction accuracy,highlighting its effectiveness in capturing the nuances of learners’knowledge *** results indicate that our model provides a more comprehensive representation of student learning patterns,enhancing the ability to predict future performance with greater precision.

关键词： Knowledge tracing multilayer perceptron channel mixer sequence mixer

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高血压患者主动脉根部或升主动脉内径扩张的临床意义

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中国心血管杂志 2016年第5期21卷 388-391页

作者：王淑敏卢长林孙菲边红周岩杨青苗王颖首都医科大学附属北京同仁医院心内科 100730 北京朝阳医院心脏中心 100020 首都医科大学附属北京宣武医院流行病学和社会医学部 100053

目的研究高血压患者主动脉根部或升主动脉内径扩张的临床意义。方法选取2007年12月至2009年8月经我院超声心动图检查确诊的主动脉根部或升主动脉内径扩张的高血压患者174例,以性别、年龄匹配的主动脉根部及升主动脉内径正常的高血压患... 详细信息

目的研究高血压患者主动脉根部或升主动脉内径扩张的临床意义。方法选取2007年12月至2009年8月经我院超声心动图检查确诊的主动脉根部或升主动脉内径扩张的高血压患者174例,以性别、年龄匹配的主动脉根部及升主动脉内径正常的高血压患者70例为对照,分析主动脉根部或升主动脉内径扩张的高血压患者的临床特征。结果主动脉根部或升主动脉内径扩张组中,合并吸烟[47.3%(82/174)比31.4%(22/70)]、血脂异常[52.7%(91/174)比44.3%(31/70)]、动脉粥样硬化性疾病[54.1%(94/174)比42.9%(30/70)]的比例高于非扩张组(均为P<0.05);在主动脉根部内径扩张组,室间隔厚度[(11.6±5.5)mm比(10.7±2.7)mm,P=0.02]、左房大小[(39.1±5.9)mm比(37.8±6.5)mm,P=0.03]、E/Em(9.3±3.8比7.8±2.9,P=0.03)均较高;E峰速度[(72±14)cm/s比(75±16)cm/s,P<0.01]、Em[(7.7±2.7)cm/s比(9.4±2.6)cm/s,P<0.01]及E/A(0.86±0.29比1.03±0.30,P=0.02)较低。逐步Logistic回归分析显示,年龄、室间隔厚度、E/A和E/Em是主动脉根部或升主动脉内径扩张的独立影响因素。结论主动脉根部或升主动脉内径扩张的高血压患者常有多种心血管危险因素的聚集,并伴有心脏结构和功能的异常。

关键词：高血压超声心动描记术主动脉根部内径扩张

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High-energy-density lithium manganese iron phosphate for lithium-ion batteries: Progresses, challenges, and prospects

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Journal of Energy Chemistry 2025年第1期100卷 1-17页

作者： Bokun Zhang Xiaoyun wang Shuai wang Yan Li Libo Chen Handong Jiao Zhijing Yu Jiguo Tu State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Research Institute for Intelligent Wearable Systems The Hong Kong Polytechnic University Institute of Advanced Structure Technology Beijing Institute of Technology

The soaring demand for smart portable electronics and electric vehicles is propelling the advancements in high-energy–density lithium-ion *** manganese iron phosphate (LiMnxFe1-xPO4) has garnered significant attention as a promising positive electrode material for lithium-ion batteries due to its advantages of low cost,high safety,long cycle life,high voltage,good high-temperature performance,and high energy *** LiMnxFe1-xPO4has made significant breakthroughs in the past few decades,there are still facing great challenges in poor electronic conductivity and Li-ion diffusion,manganese dissolution affecting battery cycling performance,as well as low tap *** review systematically summarizes the reaction mechanisms,various synthesis methods,and electrochemical properties of LiMnxFe1-xPO4to analyze reaction processes accurately and guide material ***,the main challenges currently faced are concluded,and the corresponding various modification strategies are discussed to enhance the reaction kinetics and electrochemical performance of LiMnxFe1-xPO4,including multi-scale particle regulation,heteroatom doping,surface coating,as well as microscopic morphology ***,in view of the current research challenges faced by intrinsic reaction processes,kinetics,and energy storage applications,the promising research directions are *** importantly,it is expected to provide key insights into the development of high-performance and stable LiMnxFe1-xPO4materials,to achieve practical energy storage requirements.

关键词： Semiconductor doping

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Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong wang Pengyang wang Yali Liu Shanshan Qi Biao Shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Perovskite solar cells

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P2Y1 receptor in Alzheimer’s disease

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Neural Regeneration Research 2025年第2期20卷 440-453页

作者： Shan Luo Yifei wang Tatsuhiro Hisatsune Department of Integrated Biosciences The University of TokyoKashiwaJapan

Alzheimer’s disease is the most frequent form of dementia characterized by the deposition of amyloid-beta plaques and neurofibrillary tangles consisting of hyperphosphorylated *** amyloid-beta plaques has been a primary direction for developing Alzheimer’s disease treatments in the last ***,existing drugs targeting amyloid-beta plaques have not fully yielded the expected results in the clinic,necessitating the exploration of alternative therapeutic *** evidence unravels that astrocyte morphology and function alter in the brain of Alzheimer’s disease patients,with dysregulated astrocytic purinergic receptors,particularly the P2Y1 receptor,all of which constitute the pathophysiology of Alzheimer’s *** receptors are not only crucial for maintaining normal astrocyte function but are also highly implicated in neuroinflammation in Alzheimer’s *** review delves into recent insights into the association between P2Y1 receptor and Alzheimer’s disease to underscore the potential neuroprotective role of P2Y1 receptor in Alzheimer’s disease by mitigating neuroinflammation,thus offering promising avenues for developing drugs for Alzheimer’s disease and potentially contributing to the development of more effective treatments.

关键词： astrocytes neuroinflammation P2Y1 receptor purinergic receptor

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