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Protein-spatiotemporal partition releasing gradient porous scaffolds and anti-inflammatory and antioxidant regulation remodel tissue engineered anisotropic meniscus

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Bioactive materials 2023年第2期20卷 194-207页

作者： Bingbing Xu Jing Ye Bao-Shi Fan Xinjie Wang Ji-Ying Zhang Shitang Song Yifan Song Wen-Bo Jiang Xing Wang Jia-Kuo Yu Sports Medicine department Beijing Key Laboratory of Sports InjuriesPeking University Third HospitalNo.49North Garden RoadHaidian DistrictBeijing 100191PR China Peking University Institute of Sports Medicine No.49North Garden RoadHaidian DistrictBeijing 100191PR China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Polymer Physics&ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190PR China University of Chinese Academy of Sciences Beijing100049PR China Clinical Translational R&D Center of 3D Printing Technology Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011PR China

Meniscus is a wedge-shaped fibrocartilaginous tissue,playing important roles in maintaining joint stability and *** injuries are difficult to heal and frequently progress into structural breakdown,which then leads to *** of heterogeneous tissue engineering meniscus(TEM)continues to be a scientific and translational *** morphology,tissue architecture,mechanical strength,and functional applications of the cultivated TEMs have not been able to meet clinical needs,which may due to the negligent attention on the importance of microenvironment in vitro and in ***,we combined the 3D(three-dimensional)-printed gradient porous scaffolds,spatiotemporal partition release of growth factors,and anti-inflammatory and anti-oxidant microenvironment regulation of Ac2-26 peptide to prepare a versatile meniscus composite scaffold with heterogeneous bionic structures,excellent biomechanical properties and anti-inflammatory and anti-oxidant *** observing the results of cell activity and differentiation,and biomechanics under anti-inflammatory and anti-oxidant microenvironments in vitro,we explored the effects of anti-inflammatory and anti-oxidant microenvironments on construction of regional and functional heterogeneous TEM via the growth process regulation,with a view to cultivating a high-quality of TEM from bench to bedside.

关键词： Tissue engineering meniscus Gradient porous scaffolds Spatiotemporal partition release Ac2-26 peptide Anti-inflammatory and anti-oxidant regulation

mechanical Response of the composite Material—Concrete Interface in FRP-Strengthened Concrete Elements:Finite Element Simulation

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Journal of Mechanics engineering and Automation 2018年第1期8卷 30-34页

作者： Todor Zhelyazov Faculty of Transport Department of MechanicsTechnical University of Sofia8Kliment Ohridski blvdSofia 1000Bulgaria

In structural elements strengthened with Fiber Reinforced Polymer(FRP),debonding failure modes should be taken into *** specific circumstances,they may provoke a global,premature failure of the structural *** other cases,they should be accounted for in the modeling in order to obtain more accurate *** the large amount of research work carried out in this field in the last few decades,debonding failure modes are still not fully *** contribution is focused on a numerical procedure designed to model the progressive loss of bond action between FRP and *** two-stage procedure is integrated into incremental,finite element *** proposed algorithm uses experimentally obtained slip-stress *** failure criteria are used to predict the local bond *** the reported case study,an experimental set-up widely employed to investigate debonding is *** obtained by finite element analysis are discussed.

关键词： FRP-concrete interface debonding finite element analysis and simulation

Failure Evaluation of Reinforced Concrete Beams Using Damage Mechanics and Classical Laminate Theory

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Journal of Architectural Environment & Structural engineering Research 2022年第4期5卷 1-9页

作者： JoséMário Feitosa Lima Geraldo JoséBelmonte dos Santos Paulo Roberto Lopes Lima State University of Feira de Santana Technology DepartmentFeira de SantanaBahia44030-900Brazil

The prediction of the behavior of reinforced concrete beams under bending is essential for the perfect design of these ***,the classical models do not incorporate the physical nonlinear behavior of concrete under tension and compression,which can underestimate the deformations in the structural element under short and long-term *** the present work,a variational formulation based on the Finite Element Method is presented to predict the flexural behavior of reinforced concrete *** physical nonlinearity due cracking of concrete is considered by utilization of damage concept in the definition of constitutive models,and the lamination theory it is used in discretization of section cross of *** the layered approach,the reinforced concrete element is formulated as a laminated composite that consists of thin layers,of concrete or steel that has been modeled as elastic-perfectly plastic *** comparison of numerical load-displacement results with experimental results found in the literature demonstrates a good approximation of the model and validates the application of the damage model in the Classical Laminate Theory to predict mechanical failure of reinforced concrete *** results obtained by the numerical model indicated a variation in the stress-strain behavior of each beam,while for under-reinforced beams,the compressive stresses did not reach the peak stress but the stress-strain behavior was observed in the nonlinear regime at failure,for the other beams,the concrete had reached its ultimate strain,and the beam’s neutral axis was close to the centroid of the cross-section.

关键词： Reinforced concrete Damage mechanics Finite element method Laminate theory

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二次电池研究进展

物理化学学报 2022年第12期38卷 22-167页

作者：黄俊达朱宇辉冯煜韩叶虎谷振一刘日鑫杨冬月陈凯张相禹孙威辛森余彦尉海军张旭于乐王华刘新华付永柱李国杰吴兴隆马灿良王飞陈龙周光敏吴思思卢周广李秀婷刘继磊高鹏梁宵常智叶华林李彦光周亮尤雅王鹏飞杨超刘金平孙美玲毛明磊陈浩张山青黄岗余丁山徐建铁熊胜林张进涛王莹任玉荣杨春鹏徐韵涵陈亚楠许运华陈子峰杲祥文浦圣达郭少华李强曹晓雨明军皮欣朋梁超凡伽龙王俊雄焦淑红姚雨晏成林周栋李宝华彭新文陈冲唐永炳张桥保刘奇任金粲贺艳兵郝晓鸽郗凯陈立宝马建民电子科技大学材料与能源学院成都611731 中国科学院化学研究所北京100190 厦门大学材料学院福建厦门361005 中国科学技术大学材料科学与工程系合肥230026 东北师范大学物理学院长春130024 南京大学现代工程与应用科学学院南京210046 中国科学院长春应用化学研究所长春130022 北京化工大学有机无机复合材料国家重点实验室北京100029 北京工业大学材料与制造学部北京100124 北京航空航天大学化学学院北京100191 北京航空航天大学交通科学与工程学院北京100191 郑州大学化学学院郑州450001 郑州大学橡塑模具国家工程研究中心郑州450002 东北师范大学化学学院长春130024 山西大学分子科学研究所太原030006 复旦大学材料科学系上海200433 华东理工大学化工学院上海200237 清华大学深圳国际研究生院广东深圳518055 南方科技大学材料科学与工程系广东深圳518055 深圳大学高等研究院广东深圳518060 湖南大学材料科学与工程学院长沙410082 湖南大学化学化工学院长沙410082 中南大学材料科学与工程学院长沙410083 苏州大学功能纳米与软物质研究院江苏苏州215123 武汉理工大学材料复合新技术国家重点实验室武汉430070 西安交通大学电气工程学院西安710049 武汉理工大学化学化工与生命科学学院武汉430070 华中科技大学光学与电子信息学院武汉430074 centre for Catalysis and Clean Energy School of Environment and ScienceGriffith UniversityGold CoastQLD4214Australia 中山大学化学学院广州510275 华南理工大学环境与能源学院广州510006 山东大学化学与化工学院济南250100 香港中文大学化学系中国香港999077 常州大学材料科学与工程学院江苏常州213164 天津大学化工学院天津300350 天津大学材料科学与工程学院天津300350 department of materials University of OxfordOxfordOX13PH 青岛大学新能源科学与工程系山东青岛266071 河南工业大学化学化工学院郑州450001 华中科技大学材料科学与工程学院武汉430074 苏州大学能源学院江苏苏州215006 华南理工大学轻工科学与工程学院广州510641 中国科学院深圳先进技术研究院广东深圳518055 湖南大学物理与微电子科学学院长沙410082 香港城市大学物理系中国香港999077 department of mechanical and materials engineering University of Western OntarioLondonOntario N6A 5B9Canada 西安交通大学化学学院西安710049 中南大学粉末冶金国家重点实验室长沙410083

能源的存储和利用是当今科学和技术发展中的重大课题之一,尤其是作为高效的电能/化学能转化装置的二次电池相关技术一直是科学家研究的热点领域。在此背景下,本文较为系统地介绍目前二次电池的重要研究进展,将从二次电池的发展历史引入... 详细信息

能源的存储和利用是当今科学和技术发展中的重大课题之一,尤其是作为高效的电能/化学能转化装置的二次电池相关技术一直是科学家研究的热点领域。在此背景下,本文较为系统地介绍目前二次电池的重要研究进展,将从二次电池的发展历史引入,再到其相关的基础理论知识的介绍。随后较为详细地讨论当前不同体系的二次电池及相关应的关键材料的研究进展,涉及到锂离子电池、钠离子电池、钾离子电池、镁离子电池、锌离子电池、钙离子电池、铝离子电池、氟离子电池、氯离子电池、双离子电池、锂-硫(硒)电池、钠-硫(硒)电池、钾-硫(硒)电池、多价金属-硫基电池、锂-氧电池、钠-氧电池、钾-氧电池、多价金属-氧气电池、锂-溴(碘)电池、水系金属离子电池、光辅助电池、柔性电池、有机电池、金属-二氧化碳电池等。此外,也介绍了电池研究中常见的电极反应过程表征技术,包括冷冻电镜、透射电镜、同步辐射、原位谱学表征、磁性表征等。本文将有助于研究人员对二次电池进行全面系统的了解与把握,并为之后二次电池的研究提供很好的指导作用。

关键词：二次电池电池体系电池材料电化学知识表征技术

3D Model Simulating the Hydro-mechanical State of Unsaturated and Deformable Material during Hot air Drying

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Hydro Science & Marine engineering 2020年第1期2卷 27-32页

作者： Lamine Hassini Sadoth Sandoval Torres University of Tunis El Manar Facultédes Sciences de TunisLaboratoire d’Energétique et des Transferts Thermique et Massique(LETTM)Tunisia Instituto Politécnico Nacional CIIDIR unidad OaxacaHornos No.1003Col.Noche BuenaSanta Cruz XoxocotlánOaxacaMexico department of Physics College of Science and Humanities in AlGuayah-Shaqra UniversitySaudi Arabia

A three dimensional model to predict the hydro-mechanical state of unsaturated and deformable material during hot air drying has been *** material viscoelastic behaviour was formulated using Bishop’s effective stress theory for partially saturated material using the liquid saturation as the Bishop *** hydro-thermal and mechanical equations were coupled by the fluid pressure and the solid matter *** model was applied to a deformable material(innovative clay-cellulose fibers composite)subjected to convective drying.A generalized Maxwell model with five elements,whose parameters were measured experimentally and correlated to water content was used to describe the material’s viscoelastic *** hydro-thermal part of the proposed model was validated on the basis of a comparison of experimental and simulated drying rate *** Von Mises stress was simulated and compared to the experimental tensile strength in order to predict the time and the region of material *** a drying process at 95°C,the region of failure risk was *** failure may occur on the lateral surface of the slab in contact with air at a drying time of 2.5h.

关键词： Modeling and simulation Cellulosic-clay composite Convective drying Von Mises stress Material failure