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Prussian Blue Analogue‑Templated Nanocomposites for Alkali‑Ion Batteries:Progress and Perspective

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Nano-Micro Letters 2025年第1期17卷 216-261页

作者： jian‑En Zhou Yilin Li Xiaoming Lin Jiaye Ye Key Laboratory of Theoretical Chemistry of Environment Ministry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006People’s Republic of China School of Chemistry and Physics Faculty of ScienceQueensland University of Technology2 George StreetBrisbaneQLD 4000Australia Centre for Materials Science Queensland University of Technology2 George StreetBrisbaneQLD 4000Australia

Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium *** enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal *** review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).To distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these *** on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.

关键词： Prussian blue analogues Self-sacrificial template Lithium-ion batteries Sodium-ion batteries Potassium-ion batteries

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农村公共体育服务的现状调查与对策研究

武汉体育学院学报 2008年第11期42卷 73-77页

作者：王海宏杨建国王剑胡强祁团结黄淮学院体育系河南驻马店463000

以社会主义新农村建设为背景,以农村公共体育服务为研究对象,以河南省为个案,对农民参与体育健身活动的实际情况、影响农民参与体育健身活动的主、客观因素、农村体育最需要解决的问题进行了问卷调查与分析。结果表明:农村公共体育服务... 详细信息

以社会主义新农村建设为背景,以农村公共体育服务为研究对象,以河南省为个案,对农民参与体育健身活动的实际情况、影响农民参与体育健身活动的主、客观因素、农村体育最需要解决的问题进行了问卷调查与分析。结果表明:农村公共体育服务基础设施薄弱,城乡差距显著,绝大部分政策在农村体育实施过程中还停留在口头表述层面,缺少操作性强的刚性保护措施。

关键词：农村公共体育服务全民健身城乡差别刚性措施

A functional MRI study of mental calculation-a comparison between abacus mental experts and nonexperts

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A functional MRI study of mental calculation-a comparison be...

PCA-BP神经网络模型在拖拉机发动机故障诊断中的应用

中国神经科学学会第六届学术会议暨学会成立十周年庆祝大会

作者： Chen Fei-yan, Zhao Xiao-hu, He hong-jian, yang Zhen-yan, Hu Zheng-hui Bio-X Laboratory, Zhejiang University, Hangzhou 310027 Tongji Hospital Affiliated, Tongji University, Shanghai 200065

＜正＞Abacus mental calculation is a method of mental calculation based on the principles of manipulating abacus calculation, opposite to the usual algorithm. Abacus mental experts have demonstrated extraordinary potential of mental calculation. The neurophysiological mechanism underlying such superior mental calculation capability remains unknown, although some efforts have been done. In the present study, we investigated the neural correlates of mental calculation in children abacus mental experts and nonexperts, employing a functional magnetic resonance imaging （fMRI） to measure the subjects’ brain activities engaged in simple serial addition （SSA, one-digit numbers） and complex serial addition （CSA, two-digit numbers for control, four-digit numbers for experts）. Eight right-handed healthy children abacus mental experts and. ten children nonexperts aged between 10 and 15 years, volunteered to participate in this study with informal written consent by their parents.

关键词： mental calculation fMRl neural correlate childr

来源： cnki会议评论

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农机化研究 2025年第3期47卷 254-258页

作者：杨健成都农业科技职业学院成都611130

拖拉机发动机故障诊断是指通过对拖拉机发动机的运行状态、传感器数据等信息进行分析和处理,识别出发动机故障的类型和位置,及时准确地诊断拖拉机发动机故障,对于提高农机装备的使用效率和经济效益具有重要的意义。为此,基于主成分分析(... 详细信息

拖拉机发动机故障诊断是指通过对拖拉机发动机的运行状态、传感器数据等信息进行分析和处理,识别出发动机故障的类型和位置,及时准确地诊断拖拉机发动机故障,对于提高农机装备的使用效率和经济效益具有重要的意义。为此,基于主成分分析(PCA)算法对拖拉机发动机的传感器数据进行降维处理,并使用BP神经网络对降维后的数据进行分类识别,以实现拖拉机发动机故障的诊断。试验结果表明:PCA-BP神经网络模型可以准确地诊断拖拉机发动机的多种故障,相比于传统的BP神经网络模型,具有更高的准确率和更好的泛化能力,表明PCA-BP神经网络模型在拖拉机发动机故障诊断中具有较大的应用前景。

关键词：拖拉机发动机故障诊断主成分分析 BP神经网络

维普期刊数据库博看期刊

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TiO_2纳米纤维的制备及其性能研究进展

合成纤维 2016年第12期45卷 26-30页

作者：安红玉杨建忠西安工程大学纺织与材料学院陕西西安710048

静电纺丝法是生产纳米纤维的有效方法。用静电纺丝制备的纳米Ti O2纤维成本低、产率高、适用性广,在很多领域具有潜在的应用价值。综述了结合静电纺丝方法的纳米Ti O2的制备方法及应用研究进展,并展望了其应用前景。

关键词：静电纺丝 TiO2 制备方法纳米纤维应用

Two paths, one goal: mechanism of calcium homeostasis to balance plant growth and immunity

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Science China Life Sciences 2025年第1期68卷 306-308页

作者： Aziz Ul Ikram Yanping Jing Huan Chen jian Chen International Genome Center Jiangsu University Joint Center for Single Cell Biology School of Agriculture and BiologyShanghai Jiao Tong University

Calcium(Ca2+) is an essential nutrient and a cellular signal in plants. The level of free Ca2+in the apoplast is ～10,000-fold higher than that in the cytoplasm at the resting state. This large Ca2+level gradient across the membrane between the interior and exterior can cause Ca2+overload and toxicity. Plants have evolved mechanisms to export Ca2+out of the cytoplasm or store it in intracellular organelles, such as endoplasmic reticulum（ER）, mitochondria, and vacuole.

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Inexact proximal gradient algorithm with random reshuffling for nonsmooth optimization

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Science China(Information Sciences) 2025年第1期68卷 219-237页

作者： Xia jianG Yanyan FANG Xianlin ZENG jian SUN Jie CHEN National Key Lab of Autonomous Intelligent Unmanned Systems School of AutomationBeijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center School of Electronic and Information Engineering Tongji University

Proximal gradient algorithms are popularly implemented to achieve convex optimization with nonsmooth regularization. Obtaining the exact solution of the proximal operator for nonsmooth regularization is challenging because errors exist in the computation of the gradient; consequently, the design and application of inexact proximal gradient algorithms have attracted considerable attention from researchers. This paper proposes computationally efficient basic and inexact proximal gradient descent algorithms with random reshuffling. The proposed stochastic algorithms take randomly reshuffled data to perform successive gradient descents and implement only one proximal operator after all data pass through. We prove the convergence results of the proposed proximal gradient algorithms under the sampling-without-replacement reshuffling *** computational errors exist in gradients and proximal operations, the proposed inexact proximal gradient algorithms can converge to an optimal solution neighborhood. Finally, we apply the proposed algorithms to compressed sensing and compare their efficiency with some popular algorithms.

关键词： proximal operator random reshuffling inexact computation compressed sensing nonsmooth optimization

Resistance of Cement-based Grouting Materials with Nano- SiO_(2) Emulsion to Chloride Ion Penetration

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 114-119页

作者： LI Shuiping CHENG jian WEI Chao YUAN Bin YU Chengxiao College of Architectural Science and Engineering Yangzhou UniversityYangzhou 225127China

The chloride penetration resistance of cement-based grout materials was improved by nano-silica *** of mixtures containing different nano-silica particles or emulsions were exposed in sodium chloride solutions of specific concentrations with different test *** properties of the mixes were assessed in terms of weight loss and compressive strength.X-ray diffraction(XRD)and scanning electron microscopy(SEM)of mixes were performed to analysis the phase evolution and *** results demonstrated that the introduction of nano-SiO_(2) emulsion significantly decreased the compressive strength loss and calcium hydroxide(CH)crystal content of hydration production,and then enhanced the resistance of cement-based grouting materials to chloride ion *** improvement derives from the filling and pozzolanic effects of nano-SiO_(2) particles,which were incorporated via an emulsion and attributed to a well dispersion in grouting matrix.

关键词： grouting materials nano-SiO_(2)emulsion chloride ion penetration,weight loss strength loss

Mutual-structure weighted guided image filtering for depth map restoration

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Optoelectronics Letters 2025年第1期21卷 51-56页

作者： LIU Zijian SONG jian CHEN Quanmin XU jiangtao Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology School of Microelectronics Tianjin University Spikesee Technology Co. Ltd.

Although guided image filtering(GIF) is known for preserving edges and fast computation, it may produce inaccurate outputs in depth map restoration. In this paper, a novel confidence-weighted GIF called mutual-structure weighted GIF(MSWGIF) is proposed, which replaces the mean filtering strategy in GIF during handling overlapping windows. The confidence value is composed of a depth term and a mutual-structure term, where the depth term is utilized to protect the edges of the output, and the mutual-structure term helps to select accurate windows during the structure characteristics of the guidance image are transferred to the output. Experimental results show that MSWGIF reduces the root mean square error(RMSE) by an average of 12.37%, and the average growth rate of correlation(CORR) is 0.07% on average. Additionally, the average growth rate of structure similarity index measure(SSIM) is 0.34%.

关键词： Wiener filtering