检索结果-南通市图书馆

Recent advances in engineered polymeric materials for efficient photodynamic inactivation of bacterial pathogens

Bioactive Materials 2023年第3期21卷 157-174页

作者： Sathishkumar Gnanasekar Gopinath Kasi Xiaodong He Kai Zhang Liqun Xu En-Tang Kang Chongqing Key laboratory for Advanced Materials and Technologies of Clean Energies School of Materials and EnergySouthwest UniversityChongqing400715PR China Key laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province College of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou571158PR China Department of Chemical and Biomolecular engineering National University of SingaporeKent Ridge117576Singapore

Nowadays,infectious diseases persist as a global crisis by causing significant destruction to public health and the economic stability of countries *** bacterial infections remain a most severe concern due to the prevalence and emergence of multi-drug resistance(MDR)and limitations with existing therapeutic *** photodynamic therapy(APDT)is a potential therapeutic modality that involves the systematic administration of photosensitizers(PSs),light,and molecular oxygen(O_(2))for coping with bacterial *** the existing porphyrin and non-porphyrin PSs were effective in APDT,the poor solubility,limited efficacy against Gram-negative bacteria,and non-specific distribution hinder their clinical ***,to promote the efficiency of conventional PSs,various polymer-driven modification and function-alization strategies have been adopted to engineer multifunctional hybrid *** review as-sesses recent advancements and state-of-the-art research in polymer-PSs hybrid materials developed for APDT ***,the key research findings of the following aspects are considered in-depth with constructive discussions:i)PSs-integrated/functionalized polymeric composites through various molecular in-teractions;ii)PSs-deposited coatings on different substrates and devices to eliminate healthcare-associated in-fections;and iii)PSs-embedded films,scaffolds,and hydrogels for regenerative medicine applications.

关键词： Antibacterial photodynamic therapy Polymers Photosensitizers Conjugation Hydrogels Biomaterials

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Micro/nano-structured TiO2 surface with dual-functional antibacterial effects for biomedical applications

引用

Bioactive Materials 2019年第1期4卷 346-357页

作者： Xiang Ge Chengzu Ren Yonghui Ding Guang Chen Xiong Lu Kefeng Wang Fuzeng Ren Meng Yang Zhuochen Wang Junlan Li Xinxin An Bao Qian Yang Leng Key laboratory of Mechanism Theory and Equipment Design of Ministry of Education School of Mechanical EngineeringTianjin UniversityTianjin300354China Department of Mechanical and Aerospace engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Center for Advanced regenerative engineering Northwestern UniversityEvanstonIL60208USA Department of Biomedical engineering Northwestern UniversityEvanstonIL 60208USA Key Lab of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031China national engineering Research Center for Biomaterials Sichuan UniversityChengdu610064China epartment of Materials Science and engineering Southern University of Science and TechnologyShenzhenGuangdong518055China State Key laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin300072China School of Humanities Tianjin Agricultural UniversityTianjin300384China Department of Machine Elements and engineering Design University of KasselKassel34125Germany

implant-associated infections are generally difficult to cure owing to the bacterial antibiotic resistance which is attributed to the widespread usage of *** the global threat and increasing influence of antibiotic resistance,there is an urgent demand to explore novel antibacterial strategies other than using ***,using a certain surface topography to provide a more persistent antibacterial solution attracts more and more ***,the clinical application of biomimetic nano-pillar array is not satisfactory,mainly because its antibacterial ability against Gram-positive strain is not good ***,the pillar array should be equipped with other antibacterial agents to fulfill the bacteriostatic and bactericidal requirements of clinical ***,we designed a novel model substrate which was a combination of periodic micro/nano-pillar array and TiO2 for basically understanding the topographical bacteriostatic effects of periodic micro/nano-pillar array and the photocatalytic bactericidal activity of *** innovation may potentially exert the synergistic effects by integrating the persistent topographical antibacterial activity and the non-invasive X-ray induced photocatalytic antibacterial property of TiO2 to combat against antibiotic-resistant implant-associated ***,to separately verify the topographical antibacterial activity of TiO2 periodic micro/nano-pillar array,we systematically investigated its effects on bacterial adhesion,growth,proliferation,and viability in the dark without involving the photocatalysis of *** pillar array with sub-micron motif size can significantly inhibit the adhesion,growth,and proliferation of Staphylococcus aureus(***)and Escherichia coli(***).Such antibacterial ability is mainly attributed to a spatial confinement size-effect and limited contact area availability generated by the special topography of pillar ***,the pillar array is not lethal to S

关键词： Titanium dioxide Micro/nano-structured surface Topographical bacteriostatic activity Photocatalytic bactericidal property Non-invasive treatment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Accelerating degradation rate of pure iron by zinc ion implantation

引用

regenerative Biomaterials 2016年第4期3卷 205-215页

作者： Tao Huang Yufeng Zheng Yong Han State Key laboratory for Turbulence and Complex System and Department of Materials Science and engineering College of EngineeringPeking UniversityBeijing 100871China State Key laboratory for Mechanical Behavior of Materials Xian Jiaotong UniversityXian 710049China

Pure iron has been considered as a promising candidate for biodegradable implant ***,a faster degradation rate of pure iron is needed to meet the clinical *** this work,metal vapor vacuum arc technology was adopted to implant zinc ions into the surface of pure *** showed that the implantation depth of zinc ions was about 60 *** degradation rate of pure iron was found to be accelerated after zinc ion *** cytotoxicity tests revealed that the implanted zinc ions brought a slight increase on cytotoxicity of the tested *** terms of hemocompatibility,the hemolysis of zinc ion implanted pure iron was lower than 2%.However,zinc ions might induce more adhered and activated platelets on the surface of pure ***,zinc ion implantation can be a feasible way to accelerate the degradation rate of pure iron for biodegradable applications.

关键词： biodegradable metals iron zinc ion implantation biocompatibility

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Development of piezoelectric energy-harvesting tuned mass damper

引用

Science China(Technological Sciences) 2017年第3期60卷 467-478页

作者： PAN Peng ZHANG DongBin NIE Xin CHEN HaoWen Key laboratory of Civil engineering Safety and Durability of China Education Ministry Tsinghua University Beijing 100084 China Department of Civil engineering Tsinghua University Beijing 100084 China

Tuned mass dampers（TMDs）are one of the most widely used devices to mitigate vibrations in ***,in conventional TMDs,viscous dampers convert the energy of vibration into heat.A new type of TMDs,called regenerative TMD... 详细信息

关键词： piezoelectric tuned mass damper regenerative vibration control energy harvesting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Biodegradable Shape Memory Polyurethanes with Controllable Trigger Temperature

引用

Chinese Journal of Polymer Science 2016年第6期34卷 720-729页

作者：顾书英 Xie-feng Gao Sheng-peng Jin Yan-liang Liu School of Materials Science and engineering Tongji UniversityShanghai 201804China Key laboratory of Advanced Civil engineering Materials Ministry of EducationTongji UniversityShanghai 201804China

A series of random copolymers （PCLAs） were synthesized by ring-opening polymerization of D,L-lactide （LA） and ε-caprolactone （CL） with different molar ratios. PCLA based polyurethanes （PCLAUs） were obtained by chain-extending of PCLA and polytetramethylene ether （PTMEG） with hexamethylene diisocyanate （HDI）. All the PCLAUs exhibit good shape memory properties with high shape fixity ratios above 98% and shape recovery ratios above 82% in the first cycle and 91% in the second cycle. PCLAUs with less CL content show faster recovery speed and PCLAUs with more CL content show higher shape recovery ratio. The trigger temperature can be tuned or controlled around body temperature by adjusting the molar ratio of LA to CL. The PCLAUs have potential applications in implant biomedical devices, especially for minimally invasive deployable devices.

关键词： Shape memory Polyurethane Trigger temperature Biodegradable.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of silver in thermal treatments of Fe-Mn-C degradable metals:Implications for stent processing

引用

Bioactive Materials 2022年第6期7卷 30-41页

作者： Sergio Loffredo Sofia Gambaro Francesco Copes Carlo Paternoster Nicolas Giguere Maurizio Vedani Diego Mantovani laboratory for Biomaterials and Bioengineering Canada Research Chair I in Biomaterials and Bioengineering for the Innovation in SurgeryDepartment of Min-Met-Materials EngineeringResearch Center of CHU de QuebecDivision of Regenerative MedicineLaval UniversityQuebec CityQC G1V 0A6Canada Department of Mechanical engineering Politecnico di MilanoMilan20156Italy national Research Council Institute of Condensed Matter Chemistry and Technologies for Energy CNR-ICMATEGenoa16149Italy Quebec Metallurgy Center CMQ Trois-RivieresQCG9A 5E1Canada

Twinning-induced plasticity(TWIP)steels are considered excellent materials for manufacturing products requiring extremely high mechanical properties for various applications including thin medical devices,such as biodegradable intravascular *** is also proven that the addition of Ag can guarantee an appropriate degradation while implanted in human body without affecting its bioactive *** order to develop an optimized manufacturing process for thin stents,the effect of Ag on the recrystallization behavior of TWIP steels needs to be *** is of major importance since manufacturing stents involves several intermediate recrystallization annealing *** this work,the recrystallization mechanism of two Fe-Mn-C steels with and without Ag was thoroughly investigated by microstructural and mechanical *** was observed that Ag promoted a finer microstructure with a different texture evolution,while the recrystallization kinetics resulted *** presence of Ag also reduced the effectiveness of the recrystallization *** behavior was attributed to the presence of Ag-rich second phase particles,precipitation of carbides and to the preferential development of grains possessing a{111}orientation upon thermal *** prominence of{111}grains can also give rise to premature twinning,explaining the role of Ag in reducing the ductility of TWIP steels already observed in other ***,in vitro biological performances were unaffected by *** findings could allow the design of efficient treatments for supporting the transformation of Fe-Mn-C steels alloyed with Ag into commercial products.

关键词： Twinning Recrystallization Biomaterials Silver Steels

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Translational status of biomedical Mg devices in China

引用

Bioactive Materials 2019年第1期4卷 358-365页

作者： Yu Sun Hongliu Wu Wenhui Wang Rui Zan Hongzhou Peng Shaoxiang Zhang Xiaonong Zhang State Key laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China Suzhou Origin medical Technology Co.Ltd. Suzhou215513China

Magnesium(Mg)and its alloys as temporary medical implants with biodegradable and properly mechanical properties have been investigated for a long *** are already three kinds of biodegradable Mg implants which are approved by Conformite Europeene(CE)or Korea Food and Drug Administration(KFDA),but not China Food and Drug Administration(CFDA,now it is national medical Products Administration,NMPA).As we know,Chinese researchers,surgeons,and entrepreneurs have tried a lot to research and develop biodegradable Mg implants which might become other new approved implants for clinical *** in this review,we present the representative Mg implants of three categories,orthopedic implants,surgical implants,and intervention implants and provide an overview of current achievement in China from academic publications and Chinese *** would like to provide a systematic way to translate Mg and its alloy implants from experiment designs to clinical products.

关键词： Magnesium implant Device Biomedical translation China

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生物来源的类玻璃弹性体助力完全可持续性的摩擦纳米发电机

引用

Science China Materials 2023年第3期66卷 1089-1096页

作者：陈硕郭一凡孙利杰孙巍 Rasoul Esmaeely Neisiany 陈玮昱管清宝游正伟 State Key laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineDonghua UniversityShanghai 201620China Department of Materials and Polymer engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***Iran

具有生物来源、“绿色”制备、稳定的力学和电学性能、可循环利用、可降解的摩擦纳米发电机在绿色能源收集和可穿戴器件应用中意义重大,但是其制备仍存在挑战.据此,本工作发展了具有优异的弹性、生物降解性和可循环性的生物基类玻璃弹... 详细信息

具有生物来源、“绿色”制备、稳定的力学和电学性能、可循环利用、可降解的摩擦纳米发电机在绿色能源收集和可穿戴器件应用中意义重大,但是其制备仍存在挑战.据此,本工作发展了具有优异的弹性、生物降解性和可循环性的生物基类玻璃弹性体来应对上述挑战.我们以弹性体和碳纳米管为原料通过盐粒辅助的3D打印技术制备了具有多级孔结构的摩擦纳米发电机.该摩擦纳米发电机表现出优异的力学和电能输出性能,并能够通过光致加工手段实现回收再利用;而废弃的摩擦纳米发电机也能够通过弹性体的降解和碳纳米管的回收,有效节约资源和减少污染.本工作为完全可持续性摩擦纳米发电机提供了一个新的范例,对可持续性电子器件的发展具有一定的启发意义.

关键词：摩擦纳米发电机多级孔结构可循环利用回收再利用生物降解性可持续性弹性体可穿戴器件

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Characterization and evaluation of a femtosecond laser-induced osseointegration and an anti-inflammatory structure generated on a titanium alloy

引用

regenerative Biomaterials 2021年第2期8卷 104-117页

作者： Yang Liu Zhongying Rui Wei Cheng Licheng Song Yunqiang Xu Ruixin Li Xizheng Zhang Department of Orthopedics Tianjin Medical University General HospitalTianjin 300052China Institute of medical Service Support Institute of Systems EngineeringAcademy of Military SciencesTianjinChina Department of Nuclear Medicine Tianjin Medical University General HospitalTianjin 300052China Tianjin Key laboratory of Oral and Maxillofacial Function Reconstruction Tianjin Stomatological HospitalThe Affiliated Stomatological Hospital of Nankai UniversityTianjin 300041China

Cell–material interactions during early osseointegration of the bone–implant interface are critical and involve crosstalk between osteoblasts and *** surface properties of titanium implants also play a critical role in cell–material *** this study,femtosecond laser treatment and sandblasting were used to alter the surface morphology,roughness and wettability of a titanium *** and osteoclasts were then cultured on the resulting titanium alloy *** disk groups were tested:a polished titanium alloy(pTi)control;a hydrophilic micro-dislocation titanium alloy(sandblasted Ti(STi));a hydrophobic nano-mastoid Ti alloy(femtosecond laser-treated Ti(FTi));and a hydrophilic hierarchical hybrid micro-/nanostructured Ti alloy[femtosecond laser-treated and sandblasted Ti(FSTi)].The titanium surface treated by the femtosecond laser and sandblasting showed higher biomineralization activity and lower cytotoxicity in simulated body fluid and lactate dehydrogenase *** to the control surface,the multifunctional titanium surface induced a better cellular response in terms of proliferation,differentiation,mineralization and collagen *** investigation of macrophage polarization revealed that increased anti-inflammatory factor secretion and decreased proinflammatory factor secretion occurred in the early response of *** on the above results,the synergistic effect of the surface properties produced an excellent cellular response at the bone–implant interface,which was mainly reflected by the promotion of early ossteointegration andmacrophage polarization.

关键词： femtosecond laser hybrid micro-/nanostructure cell–material interactions osseointegration macrophage polarization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

GaN Schottky Barrier Diodes with High-Resistivity Edge Termination Formed by Boron implantation

引用

Chinese Physics Letters 2013年第5期30卷 140-143页

作者： XU Wei-Zong FU Li-Hua LU Hai REN Fang-Fang CHEN Dun-Jun ZHANG Rong ZHENG You-Dou Jiangsu Provincial Key laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and EngineeringNanjing UniversityNanjing 210093

Edge termination is one of the key technologies for fabricating high voltage Schottky barrier diodes(SBDs),which could effectively reduce the peak electric field along the Schottky contact edge and enhance the breakdown *** adopt a high-resistivity ring structure as the edge termination for planar GaN *** edge termination is formed by self-aligned boron implantation on the edge of devices to form a highly damaged *** the implant dose and energy ranges studied experimentally,the GaN SBDs show improved blocking characteristics in terms of reverse leakage current and breakdown voltage at higher implant dose or implant ***,the forward turn-on characteristics of the GaN SBDs exhibit no apparent change.

关键词： Schottky breakdown termination

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：