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Dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

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Journal of Energy Chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang Jian Wang Panpan Zhang Xiaomin cheng Qinghua Guan Jing dong Bixian Chen Lujie Jia Jing Zhang Yongzheng Zhang Yunjian Liu Hongzhen Lin School of Materials Science and Engineering Jiangsu University i-Lab & CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) School of Materials Science and Engineering Xi'an University of Technology State Key Laboratory of Chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMBs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （SEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNB@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关键词： Zn metal battery Dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

ZL109铝合金微弧氧化耐磨陶瓷层的工艺优化

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材料热处理学报 2017年第7期38卷 160-166页

作者：马春生程东刘泽泽朱新河严志军大连海事大学轮机工程学院辽宁大连116026

采用控制变量、正交试验法,通过测定膜层厚度、截面显微硬度、表面粗糙度、表面形貌、截面形貌及摩擦磨损试验、膜层表面XRD的分析对制备ZL109铝合金微弧氧化陶瓷层的电解液组成及电参数进行了优化研究。得到了制备ZL109铝合金微弧氧化... 详细信息

采用控制变量、正交试验法,通过测定膜层厚度、截面显微硬度、表面粗糙度、表面形貌、截面形貌及摩擦磨损试验、膜层表面XRD的分析对制备ZL109铝合金微弧氧化陶瓷层的电解液组成及电参数进行了优化研究。得到了制备ZL109铝合金微弧氧化耐磨陶瓷层的一组优化后的工艺方案,电解液配方为:8 g/L硅酸钠、2.5 g/L氢氧化钾、5 g/L钨酸钠、2 g/L乙二胺四乙酸二钠;电参数为:正向电压400 V、负向电压120 V、占空比20%、频率500 Hz。所生成的膜层厚度为76μm,表面粗糙度为2.2872μm;摩擦磨损试验中,磨损状态稳定,磨损量在30 h后稳定在1 mg左右。

关键词： ZL109铝合金微弧氧化电解液电参数

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土壤中结合残留态甲磺隆的微生物降解研究

土壤学报 2002年第5期39卷 714-719页

作者：沈东升方程冉周旭辉浙江大学环资学院杭州310029

主要进行了优选菌株青霉 (Penicilliumsp .)对土壤中结合残留态甲磺隆的降解研究 ,结果表明 ,优选菌株的引入对土壤中可提态甲磺隆的影响不大 ,但对结合残留态甲磺隆的降解和矿化有较大影响。在结合残留态甲磺隆中 ,优选菌株青霉的引入... 详细信息

主要进行了优选菌株青霉 (Penicilliumsp .)对土壤中结合残留态甲磺隆的降解研究 ,结果表明 ,优选菌株的引入对土壤中可提态甲磺隆的影响不大 ,但对结合残留态甲磺隆的降解和矿化有较大影响。在结合残留态甲磺隆中 ,优选菌株青霉的引入有利于松结态甲磺隆尤其是松结态富里酸甲磺隆的降解。

关键词：甲磺隆结合残留微生物降解青霉菌磺酰脲类除草剂土壤污染土壤修复

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在有限变形条件下损伤粘弹性梁的动力学行为

力学季刊 2004年第2期25卷 230-238页

作者：张燕盛冬发程昌钧上海师范大学土木工程学院上海201418 上海大学上海市应用数学与力学研究所力学系

本文在有限变形条件下,根据损伤粘弹性材料的一种卷积型本构关系和温克列假设,建立了粘弹性基础上损伤粘弹性Timoshenko梁的控制方程。这是一组非线性积分——偏微分方程。为了便于分析,首先利用Galerkin方法对该方程组进行简化,得到一... 详细信息

本文在有限变形条件下,根据损伤粘弹性材料的一种卷积型本构关系和温克列假设,建立了粘弹性基础上损伤粘弹性Timoshenko梁的控制方程。这是一组非线性积分——偏微分方程。为了便于分析,首先利用Galerkin方法对该方程组进行简化,得到一组非线性积分-常微分方程。然后应用非线性动力学中的数值方法,分析了粘弹性地基上损伤粘弹性Timoshenko梁的非线性动力学行为,得到了简化系统的相平面图、Poincare截面和分叉图等。考察了材料参数和载荷参数等对梁的动力学行为的影响。特别,考察了基础和损伤对粘弹性梁的动力学行为的影响。

关键词：损伤粘弹性Timosenko梁有限变形粘弹性基础动力学性质混沌分叉

Double-averaged velocity profile and its representative line for turbulent flows over two-dimensional fixed dunes

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JOURNAL OF HYDRODYNAMICS 2024年第5期36卷 934-946页

作者： Xu, Pu-er cheng, Nian-sheng Guo, dong-xin Zhejiang Univ Ocean Coll Zhoushan 316021 Peoples R China

A laboratory study was conducted using particle image velocimetry (PIV) to measure flow velocity distributions over two-dimensional smooth and rough fixed dunes. It comprised 28 tests, each yielding 146 velocity profiles over one complete dune length. Two kinds of double-averaged velocity profiles were computed, one based on all the 146 lines of data (called global average), and the others from only some of them (called partial average). The results show that the global average velocity distribution is generally close to the partial average profile derived from evenly-distributed three or five lines along one dune length. Furthermore, the global average velocity profile can also be reasonably approximated using a single profile, measured at the representative line in this paper. The representative line is found to locate near the reattachment point. This result would be helpful to simplify measurements of general velocity distribution for a flow over dunes. The paper also applies the concept of representative line to the description of distributions of turbulence characteristics.

关键词： Average velocity profile turbulent flows fixed dunes representative line

Short-term traffic safety forecasting using Gaussian mixture model and Kalman filter

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第4期14卷 231-243页

作者： sheng JIN Dian-hai WANG cheng XU dong-fang MA College of Civil Engineering and Architecture Zhejiang University Zhejiang Police College

In this paper,a prediction model is developed that combines a Gaussian mixture model(GMM) and a Kalman filter for online forecasting of traffic safety on *** time-to-collision(TTC) samples are divided into two categories:those representing vehicles in risky situations and those in safe ***,the GMM is used to model the bimodal distribution of the TTC samples,and the maximum likelihood(ML) estimation parameters of the TTC distribution are obtained using the expectation-maximization(EM) *** propose a new traffic safety indicator,named the proportion of exposure to traffic conflicts(PETTC),for assessing the risk and predicting the safety of expressway traffic.A Kalman filter is applied to forecast the short-term safety indicator,PETTC,and solves the online safety prediction problem.A dataset collected from four different expressway locations is used for performance *** test results demonstrate the precision and robustness of the prediction model under different traffic conditions and using different *** results could help decision-makers to improve their online traffic safety forecasting and enable the optimal operation of expressway traffic management systems.

关键词： Forecasting Traffic safety Gaussian mixture model Kalman filter

Analysis and evaluation on pressure fluctuations in air dense medium fluidized bed

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International Journal of Mining Science and Technology 2018年第3期28卷 461-467页

作者： sheng cheng Duan Chenlong Zhao Yuemin dong Liang Luo Zhenfu Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education School of Chemical Engineering & Technology China University of Mining & Technology Xuzhou 221116 China Forschungszentrum Jülich Julich 52428 Germany

Pressure fluctuations contribute to the instability of separation process in air dense medium fluidized bed, which provides a high motivation for further study of underlying mechanisms. Reasons for generation and propagation of pressure fluctuations in the air dense medium fluidized bed have been *** rate and collision rate of particles were employed to deduce the correlation between voidage and pressure fluctuations. Simultaneously, a dynamic pressure fluctuation measuring and analysis system was established. Based on frequency domain analysis and wavelet analysis, collected signals were disassembled and analyzed. Results show gradually intensive motion of particles increases magnitudes of signal components with lower frequencies. As a result of violent particle motion, the magnitude of real pressure signal's frequency experienced an increase as air velocity increased moderately. Wavelet analysis keeps edge features of the real signal and eliminates the noise efficaciously. The frequency of denoised signal is closed to that of pressure signal identified in frequency domain analysis.

关键词： Air dense medium fluidized bed Pressure fluctuations Frequency domain analysis Wavelet analysis Particle distribution function

Relationship between longitudinal changes in lipid composition and ischemic stroke among hypertensive patients

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World Journal of Clinical Cases 2025年第4期13卷 18-27页

作者： cheng-cheng Wei Yu-Qing Huang cheng-Hong Yu Department of Cardiology Tongxiang First People's HospitalTongxiang 314500Zhejiang ProvinceChina Department of Cardiology Guangdong Cardiovascular InstituteGuangzhou 510080Guangdong ProvinceChina

BACKGROUND Dyslipidemia was strongly linked to stroke,however the relationship between dyslipidemia and its components and ischemic stroke remained *** To investigate the link between longitudinal changes in lipid profiles and dyslipidemia and ischemic stroke in a hypertensive *** Between 2013 and 2014,6094 hypertension individuals were included in this,and ischemic stroke cases were documented to the end of *** changes of lipid were stratified into four groups:(1)Normal was transformed into normal group;(2)Abnormal was transformed into normal group;(3)Normal was transformed into abnormal group;and(4)Abnormal was transformed into abnormal *** examine the link between longitudinal changes in dyslipidemia along with its components and the risk of ischemic stroke,we utilized multivariate Cox proportional hazards models with hazard ratio(HR)and 95%*** The average age of the participants was 62.32 years±13.00 years,with 329 women making up 54.0%of the *** the course of a mean follow-up of 4.8 years,143 ischemic strokes *** normal was transformed into normal group was used as a reference,after full adjustments,the HR for dyslipidemia and ischemic stroke among abnormal was transformed into normal group,normal was transformed into abnormal group and abnormal was transformed into abnormal Wei CC et *** changed and ischemic stroke WJCC https://*** 2 February 6,2025 Volume 13 Issue 4 group were 1.089(95%CI:0.598-1.982;P=0.779),2.369(95%CI:1.424-3.941;P<0.001)and 1.448(95%CI:1.002-2.298;P=0.047)(P for trend was 0.233),*** In individuals with hypertension,longitudinal shifts from normal to abnormal in dyslipidemia-particularly in total and low-density lipoprotein cholesterol-were significantly associated with the risk of ischemic stroke.

关键词： Longitudinal change Hypertension Dyslipidemia Lipid profile Ischemic stroke

Investigating Müller glia reprogramming in mice: a retrospective of the last decade, and a look to the future

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Neural Regeneration Research 2025年第4期20卷 946-959页

作者： Zhiyuan Yin Jiahui Kang Xuan cheng Hui Gao Shujia Huo Haiwei Xu Key Lab of Visual Damage and Regeneration&Restoration of Chongqing Southwest Eye HospitalSouthwest HospitalThird Military Medical University(Army Medical University)ChongqingChina

Müller glia,as prominent glial cells within the retina,plays a significant role in maintaining retinal homeostasis in both healthy and diseased *** lower vertebrates like zebrafish,these cells assume responsibility for spontaneous retinal regeneration,wherein endogenous Müller glia undergo proliferation,transform into Müller glia-derived progenitor cells,and subsequently regenerate the entire retina with restored ***,Müller glia in the mouse and human retina exhibit limited neural reprogramming.Müller glia reprogramming is thus a promising strategy for treating neurodegenerative ocular disorders.Müller glia reprogramming in mice has been accomplished with remarkable success,through various *** in molecular,genetic,epigenetic,morphological,and physiological evaluations have made it easier to document and investigate the Müller glia programming process in ***,there remain issues that hinder improving reprogramming efficiency and ***,understanding the reprogramming mechanism is crucial toward exploring factors that will improve Müller glia reprogramming efficiency,and for developing novel Müller glia reprogramming *** review describes recent progress in relatively successful Müller glia reprogramming *** also provides a basis for developing new Müller glia reprogramming strategies in mice,including epigenetic remodeling,metabolic modulation,immune regulation,chemical small-molecules regulation,extracellular matrix remodeling,and cell-cell fusion,to achieve Müller glia reprogramming in mice.

关键词： cell fusion chemical small-molecules epigenetic extracellular matrix immune metabolic mice Müller glia neurodegenerative diseases reprogramming retina regeneration