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Visualizing surface-enriched li storage with a nanopore-array model battery

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Nano Research 2023年第4期16卷 5026-5032页

作者： Shiwen li Guohui Zhang Chao Wang Caixia Meng Xianjin li Yanxiao ning Qiang Fu State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

The coupling of model batteries and surface-sensitive techniques provides an indispensable platform for interrogating the vital surface/interface processes in battery ***,we report a sandwich-format nanopore-array model battery using an ultrathin graphite electrode and an anodized aluminum oxide(AAO)*** porous framework of AAO regulates the contact pattern of the electrolyte with the graphite electrode from the inner side,while minimizing contamination on the outer *** model battery facilitates repetitive charge-discharge processes,where the graphite electrode is reversibly intercalated and deintercalated,and also allows for the in-situ characterizations of ion intercalation in the graphite *** ion distribution profiles indicate that the intercalating li ions accumulate in both the inner and outer surface regions of graphite,generating a high capacity of~455 mAh·g^(-1)(theory:372 mAh·g^(-1)).The surface enrichment presented herein provides new insights towards the mechanistic understanding of batteries and the rational design strategies.

关键词： lithium ion batteries nanopore-array model battery in-situ surface characterization techniques ion intercalation surface enrichment effect

Tribology properties of composite layer of CrMoCu alloy cast iron by combined treatment of ion nitrocarburizing and sulphurizing

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 315-318页

作者： MA Shi-ning HU Chun-hua li xin QIU Ji Department of Materials Science and Engineering Academy of Armored Force Engineering Beijing 100072 China Department of Materials Science and EngineeringAcademy of Armored Force Engineering Beijing 100072 China Department of Materials Science and EngineeringAcademy of Armored Force Engineering Beijing 100072 China Department of Materials Science and EngineeringAcademy of Armored Force Engineering Beijing 100072 China

Composite layer with nitrocarbonide and sulfide was made on the surface of CrMoCu alloy cast iron by combined treatment of ion nitrocarburizing and sulphurizing. The composite layer is composed of sulfide layer, nitrocarbonide hypo-surface layer and its diffusing layer, the size of sulfide globular grains distributing equably on the surface is in nano-micron-scale, and the phase structure of the composite layer is composed of FeS, FeS1-x, Fe2C and Fe3N. Under oil lubrication, sulphurized surface shows good scuffing-resistance only under low velocity, and nitrocarburized and sulphurized surface greatly improves the scuffing-resistance and wear-resistance of CrMoCu alloy cast iron, its integrated friction and wear properties are better than those of the plain and sulphurized surfaces under all the velocities.

关键词： ion nitrocarburizing ion sulphurizing combined treatment friction and wear properties

Down-regulating Circular RNA Prkcsh suppresses the inflammatory response after spinal cord injury

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Neural Regeneration Research 2022年第1期17卷 144-151页

作者： Jia-Nan Chen Yi-ning Zhang li-Ge Tian Ying Zhang xin-Yu li Bin ning Department of Orthopedics Jinan Central HospitalCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Orthopedics Central Hospital Affiliated to Shandong First Medical UniversityJinanShandong ProvinceChina

Circular RNAs(circRNAs)are a class of conserved,endogenous non-coding RNAs that are involved in transcriptional and post-transcriptional gene regulation and are highly enriched in the nervous *** participate in the survival and differentiation of multiple nerve cells,and may even promote the recovery of neurological function after ***,their role in the inflammatory response after spinal cord injury remains *** the present study,we established a mouse model of T9 spinal cord injury using the modified Allen’s impact method,and identified 16,013 circRNAs and 960 miRNAs that were differentially expressed after spinal cord *** these,the expression levels of circPrkcsh were significantly different between injured and sham-treated *** then treated astrocytes with tumor necrosis factor-αin vitro to simulate the inflammatory response after spinal cord *** results revealed an elevated expression of circPrkcsh with a concurrent decrease in miR-488 expression in injured *** also found that circPrkcsh regulated the expression of the inflammationrelated gene ***,in tumor necrosis factor-α-treated astrocytes,circPrkcsh knockdown decreased the expression of Ccl2 by upregulating miR-488 expression,and reduced the secretion of inflammatory cytokines in *** findings suggest that differentially expressed circRNAs participate in the inflammatory response after spinal cord injury and act as the regulators of certain ***,circPrkcsh may be used as an miR-488 sponge to regulate Ccl2 expression,which might provide a new potential therapy for *** study was approved by the Animal Ethics Committee of Shandong University of China(approval ***-20170303)on March 3,2017.

关键词： astrocyte Ccl2 ceRNA circRNA inflammation miR-488 ncRNA Prkcsh RNA sequencing spinal cord injury

Fatigue and corrosion fatigue behaviors of biodegradable Zn-li and Zn-Cu-li under physiological conditions

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Journal of Materials Science & Technology 2022年第36期131卷 48-59页

作者： Huafang li Yan Huang Xiaojing Ji Cuie Wen Lu-ning Wang Beijing Advanced Innovation Center for Materials Genome Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China School of Engineering RMIT UniversityMelbourneVictoria 3001Australia

Zinc(Zn)alloys are emerging as a new class of biodegradable metallic materials due to their good biocompatibility,suitable biodegradability,and ***,the dynamic loading in the human body,along with the corrosive physiological environment,brings great challenges to the application of biodegradable Zn *** present,there are few reports on the fatigue and corrosion fatigue properties of Zn alloys in simulated body fluid(SBF).In the present work,extruded Zn-0.8li and Zn-2Cu-0.8li alloys were selected in order to systematically evaluate their fatigue and corrosion fatigue behaviors both in air at ambient temperature and in SBF at 37℃.Results revealed that the fatigue limits of the extruded Zn-0.8li and Zn-2Cu-0.8li alloys were about 135 and 180 MPa,respectively,in air at ambient ***,the fatigue limits of the two alloys decreased to 65 and 80 MPa,respectively,in SBF at 37℃and showed a linear relationship between the corrosion fatigue life and the stress *** sources of fatigue cracks in air were internal microstructural defects or weak mechanical properties of the material,while the initiation of corrosion pits on the surface was the main reason for the source of the formation of fatigue cracks in *** fracture mode of the extruded Zn-0.8li and Zn-2Cu-0.8li alloys was quasi-cleavage *** to static immersion testing,cyclic loading significantly increased the corrosion rates of the two experimental alloys in a corrosion fatigue environment.

关键词： Biodegradable metals Biomedical applications Corrosion fatigue behaviors Fatigue behaviors Zinc alloys

Tension-Compression Yield Asymmetry Influenced by the Variable Deformation Modes in Gradient Structure Mg Alloys

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Acta Metallurgica Sinica(English Letters) 2020年第2期33卷 252-266页

作者： Jiang-li ning Bo Xu Yun-li Feng Xu-Dong li xin-Kang li Wei-Ping Tong College of Metallurgy and Energy North China University of Science and TechnologyTangshan 063210China Key Laboratory of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110004China

Surface mechanical attrition treatment(SMAT) was carried out on hot-rolled AZ31 Mg samples along two orthogonal directions;as a result,two types of gradient structures with different grain sizes and texture components in different layers were *** tension-compression yield asymmetry(YA) was studied using samples with different thicknesses,in order to elucidate the effect of combinations of variable deformation modes operating in different layers of the two oriented SMAT *** 0° oriented SMAT sample containing layers with strong basal texture displayed significant YA,because of either dislocation slip or extension twinning domination during tension or *** contrast,the 90° oriented SMAT sample containing layers with coexisting orthogonal texture components had an obviously weakened YA,which was attributed to the multi-deformation modes cooperating during tension or compression,i.e.,extension twinning or detwinning in conjunction with dislocation slips,leading to close yield stresses compared between tension and compression.

关键词： Mg alloy Gradient structure Yield asymmetry Texture Deformation mechanism

Congenital agenesis of seminal vesicle

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Asian Journal of Andrology 2005年第4期7卷 449-452,页

作者： Hong-Fei Wu Di Qiao li-xin Qian ning-Hong Song ning-Han Feng li-xin Hua Wei Zhang Department of Urology First Affiliated Hospital of Nanjing Medical University Nanjing 210029 China

Congenital agenesis of the seminal vesicle （CASV） is frequently associated with congenital absence of the vas deferens （CAVD） or ipsilateral congenital vasoureteral communication. We reported two cases of a rare condition that the vas deferens open ectopically into Mullerian duct cyst associated with agenesis of the ipsilateral seminal vesicle. The diagnosis was confirmed by vasography. Transurethral unroofing of the Mullerian duct cyst was performed in both patients with favourable results, however, assisted reproductive technology （ART） was still necessary for them to father children.

关键词： seminal vesicle vas deferens congenital abnormalities vasography

A COUNTER PROPAGATING WAVE STATE WITH A PERIODICALLY HORIZONTAL MOTION OF DEFECTS

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Journal of Hydrodynamics 2008年第5期20卷 567-573页

作者： ning li-zhong QI xin YUAN Zhe SHI Feng Institute of Hydraulic Engineering Xi＇an University of Technology Xi＇an 710048 China

Convection in a horizontal fluid layer heated from below is one of models for studying patterns of convection in binary fluid mixtures and has been extensively studied. In this article, the convection structures in a rectangular cell were investigated for the aspect-ratio Г= 12 and the separation ratio ψ = -0.47. Simulations were preformed by solving the hydrodynamic equations using the SIMPLE method. A Counter Propagating Wave （CPW） state was found in binary fluid convection with a periodically horizontal motion of defects, and the pattern dynamics was further discuss.

关键词： Counter Propagating Wave (CPW) defect convection pattern dynamics

Influence of drying and calcination temperatures for Ce-Cu-Al trimetallic composite catalyst on simultaneous removal H_(2)S and PH_(3):Experimental and DFT studies

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Journal of Environmental Sciences 2021年第6期33卷 277-287页

作者： Yingwu Wang Qiang lin Chi Wang Kai li xin Sun xin Song Yangyan Gao Ping ning Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China Faculty of Chemical Engineering Kunming University of Science and TechnologyKunming 571158China Hainan Normal University Haikou 650500China Department of Environmental Engineering Shanxi UniversityTaiyuan 030001China

This work explored the influences of the drying and calcination temperatures on a Ce-Cu-Al trimetallic composite catalyst for the simultaneous removal of H_(2)S and PH_(3).The effects of both temperatures on the structural features and activity were *** density functional theory method was used to calculate adsorption energies and further analyze their adsorption behavior on different *** revealed suitable drying and calcination temperatures to be 60 and 500℃,*** capacity reached 323.8 and 288.1 mg/*** drying temperature to 60℃is more inclined to form larger and structured grains of *** calcinating temperature to 500℃could increase the grain size and redox capacity of CuO to promote *** temperatures would destroy the surface structure and lead to a crystal phase transformation,which was that the CuO and Al_(2)O_(3)were gradually recombined into CuAl_(2)O_(4)with a spinel *** exposed crystal planes of surficial CuO and CuAl_(2)O_(4)were determined according to characterization *** results showed that,compared with CuO(111),H_(2)S and PH_(3)have weaker adsorption strength on CuAl_(2)O_(4)(100)which is not conducive to their adsorption and removal.

关键词： Temperatures H_(2)S PH_(3) CuO(111) CuAl_(2)O_(4)(100)

Dynamic modeling and aperiodically intermittent strategy for adaptive finite-time synchronization control of the multi-weighted complex transportation networks with multiple delays

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Chinese Physics B 2021年第9期30卷 184-193页

作者： ning li Haiyi Sun xin Jing Zhongtang Chen College of Sciences Northeastern UniversityShenyangChina College of Science Shenyang JianZhu UniversityShenyangChina

The idea of network splitting according to time delay and weight is *** on the cyber physical systems(CPS),a class of multi-weighted complex transportation networks with multiple delays is *** finite-time synchronization of the proposed complex transportation networks model is studied *** the basis of the theory of stability,the technique of adaptive control,aperiodically intermittent control and finite-time control,the aperiodically intermittent adaptive finite-time synchronization controller is *** controller designed in this paper is beneficial for understanding the synchronization in multi-weighted complex transportation networks with multiple *** addition,the conditions for the existence of finite time synchronization have been discussed in *** the specific value of the settling finite time for synchronization is ***,the outer coupling configuration matrices are not required to be irreducible or ***,simulation results of the finite-time synchronization problem are given to illustrate the correctness of the results obtained.

关键词： complex transportation networks adaptive finite-time synchronization multiple delays and multi-weighted aperiodically intermittent control