检索结果-南通市图书馆

Enhancing cartilage regeneration and repair through bioactive and biomechanical modification of 3D acellular dermal matrix

引用

Regenerative Biomaterials 2024年第3期3卷 105-121页

作者： Wei Gao Tan Cheng Zhengya Tang Wenqiang Zhang Yong Xui Min Han guangdong zhou Chunsheng Tao Ning Xu Huitang Xia Weijie Sun Qingdao Medical College of Qingdao University Qingdao266071China Department of Infectious Diseases The First Affliated Hospital of Anhui Medical UniversityShushanHefei230022China Department of Orthopaedic Surgery Shanghai Sixth People's Hospital Affliated to Shanghai jiao Tong University School of MedicineShanghai200025China Department of Orthopedic Surgery Shanghai Eighth People's HospitalShanghai200235China Department of PlasticSurgery&Jinan ClinicalResearch Center for Tissue Engineering Skin Regeneration and Wound Repair The First Affliated Hospital of Shandong First Medical UniversityJinan266299China Department of Orthopaedics Ninety-seventh Hospital of the Chinese People's Liberation Army NavyQingdao266071China Department of Orthopaedics The First Affliated Hospital of Shandong First Medical UniversityJinan266299China Department of Plastic surgery Shanghai Key Laboratory of Tissue EngineeringShanghai Ninth People's HospitalShanghai jiao Tong University School of MedicineShanghai200023China Department of Thoracic Surgery Shanghai Children's HospitalShanghai Jiao Tong University School of MedicineShaghai200040China Department of Thoracic Surgery Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghai200433China

Acellular dermal matrix(ADM)shows promise for cartilage regeneration and ***,an effective decellularization technique that removes cellular components while preserving the extracellular matrix,the transformation of 2D-ADM into a suitable 3D scaffold with porosity and the enhancement of bioactive and biomechanical properties in the 3D-ADM scaffold are yet to be fully *** this study,we present an innovative decellularization method involving 0.125%trypsin and 0.5%SDS and a 1%Triton X-100 solution for preparing ADM and converting 2D-ADM into 3D-ADM *** scaffolds exhibit favorable physicochemical properties,exceptional biocompatibility and significant potential for driving cartilage regeneration in vitro and in *** further enhance the cartilage regeneration potential of 3D-ADM *** incorporated porcine-derived small intestinal submucosa(SIS)for bioactivity and calcium sulfate hemihydrate(CSH)for biomechanical *** resulting 3D-ADM+SIS scaffolds displayed heightened biological activity,while the 3D-ADM+CSH scaffolds notably bolstered biomechanical *** scaffold types showed promise for cartilage regeneration and repair in vitro and in vivo,with considerable improvements observed in repairing cartilage defects within a rabbit articular cartilage *** summary,this research introduces a versatile 3D-ADM scaffold with customizable bioactive and biomechanical properties,poised to revolutionize the field of cartilageregeneration.

关键词： acellular dermal matrix three-dimensional scaffolds cartilage regeneration small intestinal submucosa calcium sulfate hemihydrate

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

结构监测无线传感网络数据传输优化方法

引用

哈尔滨工程大学学报 2024年第8期45卷 1543-1551页

作者：张佳宁沈慧周广东河海大学土木与交通学院江苏南京210098 南瑞集团有限公司国网电力科学研究院有限公司江苏南京211106

针对结构监测无线传感网络数据传输策略优化问题,本文提出一种综合考虑持久、稳定和及时的数据传输优化方法。结合结构监测无线传感网络需求和无线数据传输原理,建立了结构监测无线传感网络数据传输性能评价模型,提出了求解最优数据传... 详细信息

针对结构监测无线传感网络数据传输策略优化问题,本文提出一种综合考虑持久、稳定和及时的数据传输优化方法。结合结构监测无线传感网络需求和无线数据传输原理,建立了结构监测无线传感网络数据传输性能评价模型,提出了求解最优数据传输策略的协同飞行萤火虫算法,采用数值算例进行了验证。研究结果表明:本文建立的数据传输性能评价模型能够全面描述结构监测无线传感网络的延续性、可靠性和实时性;本文提出的优化求解方法的计算效率和解的质量提升均超过50%;获得的数据传输策略既能最大化网络寿命,又可最小化数据丢失和传输延迟。可为结构监测无线传感网络配置提供依据。

关键词：结构健康监测结构安全评估测点优化布置无线传感网络数据传输优化求解萤火虫算法数据传输路由优化

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Moisture influence in emerging neuromorphic device

引用

Frontiers of physics 2023年第5期18卷 133-142页

作者： Wenhua Wang guangdong zhou College of Artificial Intelligence Southwest UniversityChongqing 400715China

Conduction filament formation,redox reaction,and mobile ion migration in solid electrolytes underpin the memristive devices,all of which are partially influenced or fully dominated by the *** moisture-based physical-chemistry mechanism provides an electric tunable method to create enough dissociate conductance states for neuromorphic computing,but overconcentration moisture will corrode electrode and then causes device *** perspective goal is that surveys the moisture-dependency of dynamic at interfaces or/and switching function layer,clarifies the bottlenecks that the memristive device facing in terms of water molecule-related reaction,and gives the possible solutions.

关键词： memristor moisture redox reaction oxide interface engineering

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

基于ACBO-GM联合方法的高维变量结构模型修正

引用

噪声与振动控制 2024年第4期44卷 8-14,21页

作者：夏志远王友唐柏鉴周广东史慧媛苏州科技大学土木工程学院江苏苏州215011 河海大学土木与交通学院南京210098

工程结构模型修正常面临变量维度高、非线性程度强等现实问题,其模型修正的精度和效率受到严重影响,为改善这一不足,提出基于改进物体碰撞算法(Advanced Colliding Bodies Optimization,ACBO)和高斯白噪声扰动(Gaussian-white-noise Mut... 详细信息

工程结构模型修正常面临变量维度高、非线性程度强等现实问题,其模型修正的精度和效率受到严重影响,为改善这一不足,提出基于改进物体碰撞算法(Advanced Colliding Bodies Optimization,ACBO)和高斯白噪声扰动(Gaussian-white-noise Mutation,GM)的联合修正方法。在联合方法中,ACBO实现从传统的“一对一”到“优对多”的碰撞模式的转变,GM则用于保证碰撞过程中种群的多样性,可有效提升结构模型修正效率。基于一系列测试函数,对比分析标准物体碰撞算法(Colliding Bodies Optimization,CBO)和联合优化方法的优化性能;给出基于ACBO-GM联合方法的修正流程,并将其应用于钢框架修正算例和悬臂梁修正实例,对比研究基于联合修正方法与基于遗传算法(Genetic Algorithm,GA)的修正精度和效率。研究表明,ACBO-GM联合优化方法在精度和效率方面都明显优于传统的CBO方法,该优化方法的可行性得到验证;基于ACBO-GM联合方法在钢框架和悬臂梁两个工程结构修正案例中的应用,其修正精度均与基于GA方法的精度一致,但修正效率显著优于基于GA的修正方法。

关键词：振动与波改进物体碰撞算法高斯白噪声扰动模型修正联合优化方法遗传算法

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

Study on the Mechanism of Asphaltenes Reducing Oil-Water Interfacial Tension

引用

Chemical Research in Chinese Universities 2022年第2期38卷 616-621页

作者： WANG Yuwen CHENG Tiexin zhou guangdong Institute of Physical Chemistry College of ChemistryJilin UniversityChangchun 130021P.R.China

As high polar components of crude oil, asphaltenes play a significant role in reducing oil-water interfacial tension(IFT). In this paper, the effects of asphaltenes on reducing IFT in the presence of surfactant were compared, and the mechanism of asphaltenes reducing the IFT was studied by the dynamic interfacial tension(DIFT) equation. Whether asphaltenes were added to the oil or 2,5-dimethyl-4-(4-dodecyl) benzene sodium sulfonate(p-S14-4) was added to the water phase, either of all results in the IFT reducing and the IFT is related to the coverage and the mass of asphaltenes adsorption at the interface. In the presence of asphaltenes, the adsorption of the active substances to the interface is not entirely dependent on diffusion, and the process can be divided into three regions. Region I: the IFT rapidly reducing, this process is controlled by diffusion of surfactant;Region II: the IFT reducing slowly, resulted from the lower diffusion rate that is limited due to the aggregates formed by the interaction of asphaltene-asphaltene;Region III: the interaction of asphaltene-asphaltene is broken by the interaction of surfactant-asphaltene. The asphaltene aggregates are reduced and adsorbed rapidly at the interface. Furthermore, the results reveal that the asphaltenes concentration affects the coverage rate and adsorption at the interface.

关键词： Asphaltene Dynamic interfacial tension(DIFT) Syner-gistic interaction Adsorption Equilibrium interfacial tension

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

Recent Progress in Cartilage Tissue Engineering--Our Experience and Future Directions

引用

Engineering 2017年第1期3卷 28-35页

作者： Yu Liu guangdong zhou Yilin Cao Shanghai Key Laboratory of Tissue Engineering Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200011 China National Tissue Engineering Research Center of China Shanghai 200241 China Research Institute of Plastic Surgery Plastic Surgery Hospital Weifang Medical University Weifang Shandong 261041 China Plastic Surgery Hospital Chinese Academy of Medical Science Beijing 100144 China

Given the limited spontaneous repair that follows cartilage injury, demand is growing for tissue engi- neering approaches for cartilage regeneration. There are two major applications for tissue-engineered cartilage. One is in orthopedic surgery, in which the engineered cartilage is usually used to repair cartilage defects or loss in an articular joint or meniscus in order to restore the joint function. The other is for head and neck reconstruction, in which the engineered cartilage is usually applied to repair cartilage defects or loss in an auricle, trachea, nose, larynx, or eyelid. The challenges faced by the engineered car- tilage for one application are quite different from those faced by the engineered cartilage for the other application. As a result, the emphases of the engineering strategies to generate cartilage are usually quite different for each application. The statuses of preclinical animal investigations and of the clinical translation of engineered cartilage are also at different levels for each application. The aim of this review is to provide an opinion piece on the challenges, current developments, and future directions for cartilage engineering for both applications.

关键词： Cartilage tissue engineering Preclinical immunocompetent animal investigation Clinical translation Orthopedic surgery Head and neck reconstruction

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

多因素影响下巷道围岩稳定性分析及优化设计研究

引用

矿业科学学报 2024年第4期9卷 504-518页

作者：刘洪涛周光东韩子俊韩洲罗紫龙程文聪乔钟槿中国矿业大学(北京)能源与矿业学院北京100083 巷道支护与灾害防治煤炭行业工程研究中心北京100083

针对深部煤层巷道矿压显现剧烈且巷道变形难以控制的问题,基于Kastner公式对巷道高宽比、侧压系数、埋深、断面形状、围岩强度5种影响巷道围岩稳定性的因素展开正交数值模拟实验,通过方差和直观分析图法研究了各因素对巷道变形破坏的敏... 详细信息

针对深部煤层巷道矿压显现剧烈且巷道变形难以控制的问题,基于Kastner公式对巷道高宽比、侧压系数、埋深、断面形状、围岩强度5种影响巷道围岩稳定性的因素展开正交数值模拟实验,通过方差和直观分析图法研究了各因素对巷道变形破坏的敏感性。采用平面弹性复变函数理论分析了不同侧压系数与巷道高宽比下椭圆和矩形巷道围岩的应力分布规律,对椭圆形和矩形巷道宽高比和形状进行了优化设计。研究结果表明:围岩强度与侧压系数是影响巷道围岩稳定性的主要因素,埋深、断面形状、巷道高宽比为次要因素;椭圆形巷道在等轴应力比下围岩应力差值最小;矩形巷道宽度为5 m、高宽比为0.6左右时,应力集中程度较小;针对矩形巷道应力快速增高区,在考虑承压特性和断面利用率的基础上设计了圆角矩形优化巷道,确立了圆角半径的计算公式,通过数值模拟验证了其良好的性能。

关键词：正交数值模拟试验围岩控制围岩应力分布巷道高宽比围岩强度

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Fatigue reliability assessment for bridge welded details using long-term monitoring data

引用

Science China(Technological Sciences) 2011年第12期54卷 3371-3381页

作者： DENG Yang DING YouLiang LI AiQun zhou guangdong Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education Southeast University Nanjing 210096 China

A reliability assessment method of fatigue life based on the long-term monitoring data is developed for welded details in steel box girder,and the application research is presented with examples of welded rib-to-deck details in Runyang Bridges. Firstly the fatigue damage limit-state function is established based on S-N curves and Miner's rule,and the probability distribution characteristics of the coefficients in the function are discussed in detail. The uncertainties in fatigue loading effects are mainly studied based on long-term monitoring data. In the traditional studies,only the uncertainty of equivalent stress range is considered in fatigue reliability assessment. However,stress cycle number is also treated as a random variable in this paper because we know traffic flow every day differs in a thousand ways. Then the optimization method is employed to calculate the fatigue reliability. After studying the changing law of the reliability indices with time and the effect of the randomness of stress cycle number on reliability,the effect of the traffic growth on the reliability is studied. This study shows that the uncertainty in the fatigue life of the welded details can be well studied based on structural health monitoring,so it is necessary to carry out long-term strain monitoring of the welded details for accurate fatigue reliability assessment during the whole service period.

关键词： steel box girder fatigue loading effects equivalent stress range stress cycle number fatigue reliability traffic growth

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

Plankton respiration in the northern South China Sea during summer and winter

引用

Acta Oceanologica Sinica 2018年第8期37卷 74-83页

作者： ZENG Xiangxi HAO Qiang zhou guangdong LE Fengfeng LIU Chenggang zhou Wenli Key Laboratory of Marine Ecosystem and Biogeochemistry Second Institute of OceanographyState Oceanic AdministrationHangzhou 310012China Center for Marine Ranching Engineering Science Research of Tianjin Tianjin Bohai Sea Fisheries Research InstituteTianjin 300457China State Key Laboratory of Satellite Ocean Environment Dynamics Hangzhou 310012China Tianjin Key Laboratory of Aqua-ecology and Aquaculture College of FisheriesTianjin Agricultural UniversityTianjin 300384China

Plankton respiration is an important part of the carbon cycle and significantly affects the balance of autotrophic assimilation and heterotrophic production in oceanic ecosystems. In the present study, respiration rates of the euphotic zone plankton community（CR_（eu））, size fractionated chlorophyll a concentration（Chl a）, bacterial abundance（BAC）, and dissolved oxygen concentration（DO） were investigated during winter and summer in the northern South China Sea（n SCS）. The results show that there were obvious spatial and temporal variations in CR_（eu） in the n SCS（ranging from 0.03 to 1.10 μmol/（L·h））, CR_（eu） in winter（（0.53±0.27） μmol/（L·h）） was two times higher than that in summer（（0.26±0.20） μmol/（L·h））, and decreased gradually from the coastal zone to the open sea. The distribution of CR_（eu） was affected by coupled physical-chemical-biological processes, driven by monsoon events. The results also show that CR_（eu） was positively correlated with Chl a, BAC, and DO, and that BAC contributed the highest CR_（eu） variability. Furthermore, the results of the stepwise multiple linear regression suggest that bacteria and phytoplankton were the dominant factors in determining CR_（eu）（R^2 = 0.82, p〈0.05） in the n SCS. Based on this relationship, we estimated the integrated water column respiration rate（CRint） within 100 m of the investigated area, and found that the relationship between the biomass of the plankton community and respiration may be nonlinear in the water column.

关键词： northern South China Sea plankton community respiration phytoplankton bacteria

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

Fabrication and Photocatalytic Properties of Water-stable Ag/PW12/PVA Nanocomposites

引用

Chemical Research in Chinese Universities 2016年第5期32卷 854-861页

作者： SUI Chunhong WANG Zhaoyi WANG Cheng zhou guangdong CHENG Tiexin College of Chemistry Jilin University Changchun 130021 P. R. China Department of Chemistry Jilin Medical University Jilin 132013 P R. China School of Printing and Packaging Wuhan University Wuhan 430072 P. R China

A kind of water-stable phosphotungstic acid/polyvinyl alcohol（PWl2/PVA） fiber was prepared by thermal or chemical crosslinking treatments with the help of electrospinning, and silver nanoparticles（NPs） modified fibrous precursor was successfully obtained by photoreduced method. The nanocomposites were characterized by transfor- mation infrared spectroscopy（FTIR）, UV-Vis diffuse reflection spectroscopy（DRS）, field environmental scanning electron microscopy（FE-SEM）, transmission electron microscopy（TEM） and X-ray photoelectron spectroscopy（XPS）. The results indicate that the sizes of silver NPs are about 20 or 40 nm on thermally or glutaraldehyde（GA） vapor crosslinked PW12/PVA fiber, respectively. As a photocatalyst, PWI2/PVA fiber possesses high surface area to volume ratio, stable recyclability, and efficient transportation of electrons under visible light. The nanohybrids exhibit excel- lent photocatalytic activity for the degradation of Rhodamin B than PW^2/PVA nanofiber.

关键词： Electrospinning Phosphotungstic acid Silver nanoparticle Photocatalytic activity

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：