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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan wang Fan zhang Xingyu Zhou Qian wang Changyu Liu Yangyang Liu Hui wang Xiaojie Liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan Miao Li Zhao Yajun zhang Zhe yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for Nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

具有同质多晶依赖性发射的非芳香性发光化合物

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化学学报 2021年第1期79卷 93-99页

作者：来悦颖赵子豪郑书源袁望章上海交通大学化学化工学院变革性分子前沿科学中心上海市电气绝缘与热老化重点实验室上海200240

不含芳(杂)环、单键-重键交替单元等大共轭结构的纯有机发光材料引起了人们的广泛关注,但其结构与发光性质间的关系仍需进一步明确.本文研究了氧杂酸酐与氧杂酰亚胺两种非芳香性发光化合物.通过在不同溶剂中培养单晶,得到了具有不同发... 详细信息

不含芳(杂)环、单键-重键交替单元等大共轭结构的纯有机发光材料引起了人们的广泛关注,但其结构与发光性质间的关系仍需进一步明确.本文研究了氧杂酸酐与氧杂酰亚胺两种非芳香性发光化合物.通过在不同溶剂中培养单晶,得到了具有不同发光颜色及荧光-磷光双发射的同质多晶体,发光效率最高达17.0%.这种高效发射可归因于含π电子与n电子基团的簇聚产生的空间共轭及构象刚硬化.尽管这些同质多晶体结构差异微小,但少量溶剂分子的存在导致簇聚体微环境改变,调节了单线态与三线态发射比例,从而产生了不同颜色的发光.这些结果有助于人们进一步了解非典型发光化合物构象与发光间的关系,为其机理研究与分子设计提供了新的启示.

关键词：非芳香性发光化合物同质多晶室温磷光簇聚诱导发光空间共轭

红外光谱结合化学计量学对三七总黄酮含量的快速预测研究

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光谱学与光谱分析 2017年第1期37卷 70-74页

作者：李运张霁徐福荣王元忠张金渝云南省农业科学院药用植物研究所云南昆明650200 云南省省级中药原料质量监测技术服务中心云南昆明650200 云南中医学院中药学院云南昆明650500

中药产地及生长环境的改变会对其次生代谢产物、质量产生整体性影响。近年来,三七产地从道地产地文山扩展到周边县市。为保证三七质量,中国药典以三种皂苷含量为指标对三七进行质量控制,指标较为单一,难以对三七质量进行整体性评价。通... 详细信息

中药产地及生长环境的改变会对其次生代谢产物、质量产生整体性影响。近年来,三七产地从道地产地文山扩展到周边县市。为保证三七质量,中国药典以三种皂苷含量为指标对三七进行质量控制,指标较为单一,难以对三七质量进行整体性评价。通过紫外-可见分光光度法测定三七总黄酮含量,傅里叶变换红外光谱结合化学计量学建立三七总黄酮含量快速预测模型;为三七快速及整体性质量控制提供研究基础。采集云南省12个产地96个三七样品的紫外与红外光谱。记录样品紫外光谱268nm处吸光度,结合芦丁标准品线性方程计算样品中总黄酮含量。预处理红外光谱数据采用一阶(1D)、二阶导数(2D)结合SavitskyGolay平滑(7点、9点和11点)处理,Kennard-stone算法将96个个体分为2/3训练集与1/3预测集。训练集数据用于正交信号校正偏最小二乘回归(OSC-PLSR)模型的建立,1/7交叉验证用于筛选最佳主成分数,预测集数据对OSC-PLSR模型预测能力进行验证。结果显示:(1)标准品芦丁在268nm处吸光度与浓度相关系数r=0.999 7,线性浓度范围为5.6~72.0μg·mL^(-1),线性关系良好;(2)道地产区文山州3个产地以及曲靖市罗平、昆明市石林等产地三七总黄酮含量较高,平均含量高于7mg·g-1;(3)相同点数SavitskyGolay平滑之后,二阶导数模型预测能力优于一阶导数,不同处理模型预测能力具有较大差别;(4)预测模型中,2D+SG 7+OSC-PLSR(R2pre=0.976 1,RMSEP=0.325 2)与2D+SG 11+OSC-PLSR(R2pre=0.946 9,RMSEP=0.382 0)模型预测效果较好,RMSEP均小于0.4,预测值与检测值接近。傅里叶变换红外光谱结合OSC-PLSR能够对12个产地三七中总黄酮含量进行快速准确的预测,为三七整体性质量控制提供一种快速、简便、有效的检测方法。

关键词：紫外-可见分光光度法傅里叶变换红外光谱三七总黄酮含量预测质量控制

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直接力控制导弹的拟人智能自动驾驶仪设计

系统仿真学报 2008年第22期20卷 6226-6229页

作者：王枫袁飞王青张明廉北京航空航天大学自动化科学与电气工程学院305教研室北京100083

拟人智能控制是一种基于被控对象的物理模型以及人类相应的知识模拟人类处理控制问题的思路和一般方法解决问题的控制方法。基于拟人智能控制思想提出一种针对采用直接力控制导弹的姿态控制的控制逻辑和非线性控制律的设计方法。控制逻... 详细信息

拟人智能控制是一种基于被控对象的物理模型以及人类相应的知识模拟人类处理控制问题的思路和一般方法解决问题的控制方法。基于拟人智能控制思想提出一种针对采用直接力控制导弹的姿态控制的控制逻辑和非线性控制律的设计方法。控制逻辑决定了气动力与直接力两种控制方式的权限分配。然后,利用拟人思想设计定性控制律。利用广义归约的方法将复杂的导弹姿态控制问题分解成若干个可直接解决的本原问题,然后依据各本原问题的主次关系以及耦合关系通过分析导弹的飞行动力学模型设计出非线性控制律结构,最后利用遗传算法将控制律中的各权值优化定量得到定量控制律。所设计出的控制逻辑和控制律在导弹进行大过载机动时保证导弹的稳定性。仿真结果表明复合控制方法可以使导弹具有更高的精度。

关键词：拟人智能控制广义规约遗传算法直接力控制复合控制

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng Cai Shengjun Miao yuan Li Yu wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

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冲击荷载作用下泄爆板破坏冲量计算与模拟

振动与冲击 2017年第12期36卷 83-87页

作者：由泽伟王源张清华章征林黄肖迪解放军理工大学爆炸冲击防灾减灾国家重点实验室南京210007

针对工业厂房中的泄爆板在爆炸荷载作用时的破坏问题,根据双向板塑性铰线破坏理论,对其破坏机理进行理论分析。提出了泄爆板的冲量破坏准则,并推导破坏冲量的计算公式;运用ANSYS/LS-DYNA进行数值模拟,与理论结果进行对比,两者吻合较好,... 详细信息

针对工业厂房中的泄爆板在爆炸荷载作用时的破坏问题,根据双向板塑性铰线破坏理论,对其破坏机理进行理论分析。提出了泄爆板的冲量破坏准则,并推导破坏冲量的计算公式;运用ANSYS/LS-DYNA进行数值模拟,与理论结果进行对比,两者吻合较好,证明可以用冲量衡量泄爆板的破坏。分析了影响泄爆板泄爆能力的因素:抗折强度与板的厚度是主要影响因素,而弹性模量及泊松比对破坏冲量的影响相对较小,提出了工业生产中提升泄爆板泄爆能力的方法。

关键词：泄爆板破坏冲量冲击荷载塑性铰线泄爆能力

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： Lithium manganese iron phosphate High energy density Lithium-ion batteries Reaction mechanism Tap density

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： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

MiR-26a/b在AngⅡ导致的高血压血管重塑中的作用

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西安交通大学学报（医学版） 2017年第5期38卷 649-654页

作者：张益珊袁苗黄园王巧竹张文倩高登峰西安交通大学第二附属医院心血管内科陕西西安710004

目的检测小鼠主动脉和血清中miR-26a/b的表达水平的变化,探讨miR-26a/b在高血压血管重塑中的作用。方法将C576L/BJ雄性小鼠随机分为AngⅡ组和对照组。在小鼠背部皮下植入微渗透泵,持续泵入AngⅡ[2.0mg/(kg·d)]建立小鼠高血压血管重塑... 详细信息

目的检测小鼠主动脉和血清中miR-26a/b的表达水平的变化,探讨miR-26a/b在高血压血管重塑中的作用。方法将C576L/BJ雄性小鼠随机分为AngⅡ组和对照组。在小鼠背部皮下植入微渗透泵,持续泵入AngⅡ[2.0mg/(kg·d)]建立小鼠高血压血管重塑模型。对照组泵入生理盐水。分别于干预前和干预后的第3、5、7、10、14天进行血压测定。2周后处死小鼠,留取血清及主动脉组织,用RT-PCR测定miR-26a/b的表达水平。HE、Masson染色以及免疫组化观察血管形态学的变化、纤维化程度以及蛋白表达情况。结果干预后,AngⅡ组的收缩压明显高于对照组(P<0.05),AngⅡ组的舒张压也明显高于对照组(P<0.05);主动脉HE染色显示AngⅡ组血管管壁较对照组明显增厚;Masson三色染色显示AngⅡ组主动脉中层有较多蓝色的胶原纤维沉积,对照组主动脉中层未见明显的胶原纤维沉积;RT-PCR显示AngⅡ组小鼠外周血血清和主动脉中miRNA-26a/b的表达量低于对照组(P<0.05);免疫组化显示泵入AngⅡ后,CTGF、collagenⅠ、collagenⅢ的表达水平升高(P<0.05)。结论 miR-26a/b、CTGF、collagenⅠ、collagenⅢ都可能参与AngⅡ引起的高血压血管重塑,miR-26a/b在一定程度上可能成为高血压血管重塑的新的治疗靶点。

关键词：高血压血管重塑 microRNA miRNA-26a/b 细胞外基质