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A novel snail-inspired bionic design of titanium with strontium-substituted hydroxyapatite coating for promoting osseointegration

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Journal of Materials Science & Technology 2021年第20期79卷 35-45页

作者： Zhen Geng Xueping Li Luli Ji Zhaoyang Li Zhenduo cui Jing Wang jingyuan cui Xianjin Yang Changsheng Liu Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and TechnologyShanghai200237China Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin300350China Engineering Research Center for Biomedical Materials of the Ministry of Education East China University of Science and TechnologyShanghai200237China The State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai200237China Frontiers Science Center for Materiobiology and Dynamic Chemistry East China University of Science and TechnologyShanghai200237China

As the population ages,more and more people are suffering from osteoarthritis(OA),resulting in an increasing requirement for joint *** modification to improve the topology and composition of the implants has been proved to be an effective way to improve the primary stability and long-term success rate of joint *** this work,a bionic micro/nano-structure accompanied with a strontium-substituted hydroxyapatite(SrHA)coating was fabricated on titanium(Ti)surface via electrochemical corrosion,ultrasonic treatment,and hydrothermal deposition *** vitro study demonstrated that the bionic structure and the bioactive apatite could synergistically increase the expressions of integrin-related gene(ITGα5β1)and osteoblastic genes(Col-I and OCN),and thus promote osteoblast *** addition,owing to the anti-bone resorption property of Sr^(2+),the coating could effectively inhibit osteoclast differentiation and *** a word,the prepared samples not only promoted osteogenesis but also inhibited *** in vivo experiment via a rabbit model found that the bionic structured surface provided the pore for new bone ingrowth,which was beneficial to the mechanical interlocking between the implant and ***,the bionic structure and bioactive SrHA coating had a synergistic effect on promoting bone formation,osseointegration,and bone-implant bonding *** study therefore presented a new strategy to fabricate bio-functionalized Ti-based implants for potential application in orthopedics field.

关键词： Bionic structure Bioactive apatite Osteoclast activity Osseointegration Bone-implant bonding strength

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A suture-free, shape self-adaptive and bioactive PEG-Lysozyme implant for Corneal stroma defect repair and rapid vision restoration

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Bioactive Materials 2023年第11期29卷 1-15页

作者： Hang Zhou Shaohua Zhang Miao Lei Yixin Cai Honglei Wang Jianguo Sun jingyuan cui Changsheng Liu Xue Qu Key Laboratory for Ultrafine Materials of Ministry of Education School of Material Science and EngineeringFrontiers Science Center for Materiobiology and Dynamic ChemistryEast China University of Science and TechnologyShanghai200237China Eye Institute and Department of Ophthalmology NHC Key Laboratory of Myopia(Fudan University)Key Laboratory of MyopiaChinese Academy of Medical SciencesShanghai Key Laboratory of Visual Impairment and RestorationEye&ENT HospitalFudan UniversityShanghai200031China Wenzhou Institute of Shanghai University Wenzhou325000China Shanghai Frontier Science Center of Optogenetic Techniques for Cell Metabolism Shanghai200237China

limitation of donor tissue shortage clinically. In addition, suturing-needed transplantation potentially causes postoperative complications. Herein, we design a PEG-Lysozyme injective hydrogel as a suture-free, shape self-adaptive, bioactive implant for corneal stroma defect repair. This implant experiences a sol-gel phase transition via an in situ amidation reaction between 4-arm-PEG-NHS and lysozyme. The physicochemical properties of PEG-Lysozyme can be tuned by the components ratio, which confers the implant mimetic corneal modulus and provides tissue adhesion to endure increased intraocular pressure. In vitro tests prove that the implant is beneficial to Human corneal epithelial cells growth and migration due to the bioactivity of lysozyme. Rabbit lamellar keratoplasty experiment demonstrates that the hydrogel can be filled into defect to form a shape-adaptive implant adhered to native stroma. The implant promotes epithelialization and stroma integrity, recovering the topology of injured cornea to normal. A newly established animal forging behavior test prove a rapid visual restoration of rabbits when use implant in a suture free manner. In general, this work provides a promising preclinical practice by applicating a self-curing, shape self-adaptive and bioactive PEG-Lysozyme implant for suture-free stroma repair.

关键词： Injective implant Suture free Shape self-adaptive Intraocular pressure endurance Foraging behavioral test

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Science communication with science fiction movies

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The Innovation 2024年第2期5卷 17-18页

作者： Yuanzhuo Wang jingyuan Li Yuanhao cui Department of Computer Science Beijing Technology and Business UniversityNo.33 Fucheng RoadHaidianBeijing 100048China Institute of Computing Technology Chinese Academy of SciencesNo.6 Kexueyuan South RoadHaidianBeijing 100190China School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyNo.1088 Xueyuan AvenueShenzhenGuangdong 518055China

“It is not as easy as it looks,”Holden Thorp,Science’s chief editor,commented at the end of 2021,when explaining new research findings of the COVID-19 pandemic to the public had encountered great difficulties.1 As a matter of fact,science communication has never been easy because serious scientific knowledge is prone to be boring rather than *** is only one atypical medium for science communication,i.e.,the science fiction movie(sci-fi movie for short),that has a huge amount of fans.

关键词： communication editor movie

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Optimizing electronic structure of Mo_(2)TiC_(2)T_(x) MXene through Nb doping for enhanced electrochemical performance

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Nano Research 2024年第8期17卷 7174-7181页

作者： jingyuan Zhao Wenzheng Yan Zhaoxi Liu Xiaobin Liu Yapeng Tian Xinwei cui Henan Institute of Advanced Technology College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450003China College of Physics and Electronic Information Engineering Guilin University of TechnologyGuilin 514004China

MXene is a promising electrode material for both high volumetric capacitance and high-rate performance in ***,the current study has mainly focused on the monometallic element Ti_(3)C_(2)T_(x) MXene until now,while the bimetallic and multimetallic MXene have received comparatively less *** this work,we demonstrate that the electronic structure of the Mo_(2)TiC_(2)T_(x) MXene could be regulated by fine-tuning the content of doped Nb *** enhanced electron cloud density of surface–O termination and the electron spin of the Mo atoms in the Mo_(2)TiC_(2)T_(x) MXene,leads to the boost of electric double-layer capacitor(EDLC)and improvement of *** a consequence,the electrochemical performance of Nb-doped Mo_(2)TiC_(2)T_(x) MXene(Nb-0.3-MXene)demonstrates a capacitance of 398 F·cm^(−3),roughly doubling that of the pristine Mo_(2)TiC_(2)T_(x) MXene electrode at 197 F·cm^(−3) in the 3 M H_(2)SO_(4) *** the same time,the Nb-0.3-MXene could even maintain a capacitance of 82.75% at 200 mV·s−1,with high cyclic stability for 19,000 cycles at 10 A·g−***,Nb-0.3-MXene-based hybrid supercapacitors deliver a remarkable volumetric energy density of 48.1 W·h·L^(−1)at 230.7 W·L^(−1),and 34.4 W·h·L^(−1)at a high power density of 82.6 kW·L^(−1).There exists a balance between the volumetric capacitance and rate performance with different ratios of Nb atoms in the Nb-doped MXene due to the strong interaction between the Nb-doped MXene and the intercalated ***,optimizing the electronic structure of MXene through heteroatom doping is of great potential for enhanced supercapacitor performance.

关键词： niobium doping electronic structure Mo_(2)TiC_(2)T_(x)MXene electron spin rate performance volumetric capacitance

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基于正硅酸乙酯的农药缓释微胶囊制备优化及表征

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同济大学学报（自然科学版） 2022年第9期50卷 1339-1346页

作者：徐冉刘海容崔婧媛同济大学环境科学与工程学院上海200092 上海污染控制与生态安全研究院上海200092

采用溶胶-凝胶法,以正硅酸乙酯(TEOS)为硅前驱体,制备二氧化硅凝胶对天然除虫菊酯进行封装,并以载药率为评价指标,使用响应曲面法设计BBD(Box-Behnken实验)实验确定最佳的制备工艺条件为:pH=9.02,TEOS投加量为0.96 g,反应温度36.5℃,微... 详细信息

采用溶胶-凝胶法,以正硅酸乙酯(TEOS)为硅前驱体,制备二氧化硅凝胶对天然除虫菊酯进行封装,并以载药率为评价指标,使用响应曲面法设计BBD(Box-Behnken实验)实验确定最佳的制备工艺条件为:pH=9.02,TEOS投加量为0.96 g,反应温度36.5℃,微胶囊载药率最大值可达到38.0%,平均粒径约为13.5μm。结果表明,微胶囊封装后的原药在250℃以下稳定性有着显著提升,4℃避光储存4个月,载药率仅下降6.2%。微胶囊缓释性良好,在100~200℃条件下能有效减少原药的质量损失。微胶囊对于淡色库蚊和白纹伊蚊幼虫均保留较高的杀虫活性,对蚜虫和黏虫的毒性甚至略高于原药。

关键词：天然农药除虫菊酯二氧化硅微胶囊缓释

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生物法处理钻井废弃液的研究

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石油炼制与化工 2010年第12期41卷 56-60页

作者：崔靖园李辉牟伯中华东理工大学生物反应器工程国家重点实验室应用化学研究所上海200237

GC/MS分析平湖油田钻井废弃液含有烃类、酸类和酯类等23种有机污染物质。16SrRNA基因文库分子生物学方法测得的微生物生态多样性表明,废弃液中微生物种类丰富,包括γ和β变形杆菌细菌,其中γ-Proteobacteria是优势菌群,占克隆总数的78.6... 详细信息

GC/MS分析平湖油田钻井废弃液含有烃类、酸类和酯类等23种有机污染物质。16SrRNA基因文库分子生物学方法测得的微生物生态多样性表明,废弃液中微生物种类丰富,包括γ和β变形杆菌细菌,其中γ-Proteobacteria是优势菌群,占克隆总数的78.6%。从废弃液中分离得到了一株石油烃降解菌,对废弃液有良好降解效果,COD和TOC去除率在50%以上,经鉴定该菌是Serratia marcescens。

关键词：钻井废弃液 16S rRNA基因烃降解菌生物修复

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Structural transition,electric transport,and electronic structures in the compressed trilayer nickelate La4Ni3O10

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Science China(Physics,Mechanics & Astronomy) 2024年第11期Mechanics & Astronomy) .卷 13-19页

作者： jingyuan Li cui-Qun Chen Chaoxin Huang Yifeng Han Mengwu Huo Xing Huang Peiyue Ma Zhengyang Qiu Junfeng Chen Xunwu Hu Lan Chen Tao Xie Bing Shen Hualei Sun Dao-Xin Yao Meng Wang Center for Neutron Science and Technology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices School of Physics Sun Yat-sen University Center for Materials of the Universe School of Molecular Sciences Arizona State University School of Sciences Sun Yat-sen University

Atomic structure and electronic band structure are fundamental properties for understanding the mechanism of superconductivity. Motivated by the discovery of pressure-induced high-temperature superconductivity at 80 K in the bilayer Ruddlesden-Popper nickelate La3Ni2O7, the atomic structure and electronic band structure of the trilayer nickelate La4Ni3O10under pressure up to 44.3 GPa are investigated. A structural transition from the monoclinic P21/a space group to the tetragonal I4/mmm around 12.6-13.4 GPa is identified, accompanied by a drop of resistance below 7 K. Density functional theory calculations suggest that the bonding state of Ni 3dz2orbital rises and crosses the Fermi level at high pressures, which may give rise to possible superconductivity observed in resistance under pressure in La4Ni3O10. The trilayer nickelate La4Ni3O10shows some similarities with the bilayer La3Ni2O7and has unique properties, providing a new platform to investigate the underlying mechanism of superconductivity in nickelates.

关键词： La4Ni3O10 high pressure synchrotron X-ray diffraction structural transition DFT calculations

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结合学科建设和科学研究构建创新人才培养体系

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中国高教研究 2006年第1期 32-33页

作者：宋保维崔景元西北工业大学航海学院

学科是研究型大学凝聚人才、开展科学研究和培养创新人才的核心载体。在10余年的教改实践中,航海学院着力抓学科建设,促进师资、精品课程、教材、科技创新平台和基地等要素同步提高;促进学科建设、科学研究相结合,构建创新人才培养体系。

关键词：学科建设科学研究人才培养

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重力坝杂填土地基坝基稳定复核分析

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西安理工大学学报 2019年第4期35卷 459-466页

作者：崔竞元杨杰程琳任杰西安理工大学水利水电学院

作为一种来源广泛经济的材料,建筑垃圾杂填土尝试被用于地基置换处理,以解决软基存在的地基承载力不足问题,但建筑垃圾杂填土同样具有变形大、空间分布不均匀、强度易受压实度影响等特点。通过复核建筑垃圾杂填土置换前后坝基的渗流稳... 详细信息

作为一种来源广泛经济的材料,建筑垃圾杂填土尝试被用于地基置换处理,以解决软基存在的地基承载力不足问题,但建筑垃圾杂填土同样具有变形大、空间分布不均匀、强度易受压实度影响等特点。通过复核建筑垃圾杂填土置换前后坝基的渗流稳定性、整体抗滑稳定性和坝基沉降等内容,研究建筑垃圾杂填土作为小型重力坝地基置换材料的可行性。同时,为考虑由计算参数选取引起的误差,对不同参数下的重力坝复核结果进行敏感性分析。通过分析数值模拟结果得出:在渗流控制方面,需在建筑垃圾杂填土地基底部和坝趾处设置反滤措施;在大坝稳定复核方面,通过控制材料大颗粒占比、碾压质量可以提高地基承载力,满足坝基稳定的要求;对于沉降量,建筑垃圾杂填土有一定的减轻作用,但对于深厚软基的处理需结合其他措施。

关键词：杂填土地基重力坝坝基稳定渗流坡降等效塑性应变

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磨制煤粉粒度组成及其质量分布关系研究

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煤炭转化 2008年第4期31卷 89-93页

作者：刘鹏焦红光崔敬媛王灿河南理工大学材料科学与工程学院河南焦作硕士生454003

为认识磨制煤粉的粒度特性及灰分、硫分矿物质在各粒度级的分布状况,选取西山煤电公司等三个产地的原煤和内蒙五虎山洗精煤共四个样品,采用小型球磨机在相同条件下分别进行了制粉实验,通过对磨制煤粉的粒度特性进行测试分析,证实了磨制... 详细信息

为认识磨制煤粉的粒度特性及灰分、硫分矿物质在各粒度级的分布状况,选取西山煤电公司等三个产地的原煤和内蒙五虎山洗精煤共四个样品,采用小型球磨机在相同条件下分别进行了制粉实验,通过对磨制煤粉的粒度特性进行测试分析,证实了磨制煤粉的粒度组成均符合Rosin-Rammler粒度特性方程;该方程的参数k和b分别反映了煤样的可磨性和磨粉产品的细度,洗精煤的k值明显高于原煤.各粒度级的灰分和硫分实验结果表明:粗粒级煤粉的灰分均较高,而硫分在各粒度级中的分布同煤种有关,缺乏普遍规律可循.

关键词：磨矿煤粉粒度特性 Rosin—Rammler方程灰分硫分

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