检索结果-南通市图书馆

Graphene foam/hydrogel scaffolds for regeneration of peripheral nerve using ADSCs in a diabetic mouse model

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

Nano Research 2022年第4期15卷 3434-3445页

作者： Qun Huang Yuting Cai Xinrui Yang Weimin Li Hongji Pu Zhenjing Liu Hongwei Liu Mohsen Tamtaji Feng Xu Liyuan Sheng Tae-Hyung Kim Shiqing Zhao Dazhi Sun Jinbao Qin Zhengtang Luo Xinwu Lu Department of Vascular Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China Guangdong Provincial Key Laboratory of Functional Oxide materials and Devices Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Vascular Center of Shanghai Jiao Tong University Shanghai 200011China Department of Chemical and Biological Engineering and William Mong Institute of Nano Science and Technologythe Hong Kong University of Science and TechnologyHong Kong 999077China bioinspired Engineering and Biomechanics Center(BEBC) the Key Laboratory of Biomedical Information Engineering of Ministry of EducationSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'an 710049China Shenzhen institute Peking UniversityShenzhen 518057China School of Integrative Engineering Chung-Ang UniversitySeoul 06974Republic of Korea School of Biomedical Engineering Shanghai Jiao Tong UniversityShanghai 200030China

The functional recovery of peripheral nerve injury(PNI)is unsatisfactory,whereas diabetes mellitus(DM)and its related complications further attenuate the restoration of diabetic PNI(DPNI).Adipose-derived stem cells(ADSCs)are promising candidates for treatment of DPNI due to their abundant source,excellent differentiation and paracrine *** results showed that ADSCs remarkably enhanced the proliferation and migration of Schwann cells and endothelial cells,and tube ***,ADSCs could regulate Nrf2/HO-1,NF-κB and PI3K/AKT/mTOR signaling pathways,showing multiple functions in reducing oxidative stress and inflammation,and regulating cell metabolism,growth,survival,proliferation,angiogenesis,differentiation of Schwann cell and myelin *** current study,novel graphene foam(GF)/hydrogel-based scaffold was developed to deliver ADSCs for treatment of ***/hydrogel scaffold exhibited excellent mechanical strength,suitable porous network,superior electrical conductivity,and good *** vitro results revealed that GF/hydrogel scaffold could obviously accelerate proliferation of Schwann ***,in vivo experiments demonstrated that ADSCs-loaded GF/hydrogel scaffold significantly promoted the recovery of DPNI and inhibited the atrophy of targeted muscles,thus providing a novel and attractive therapeutic approach for DPNI patients.

关键词： peripheral nerve injury(PNI) diabetes mellitus(DM) adipose-derived stem cells(ADSCs) graphene hydrogel scaffold

Photochemistry of bioinspired dityrosine crosslinking

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2021年第4期63卷 182-191页

作者： Chang Liu Jiachuan Hua Pui Fai Ng Bin Fei institute of Textiles&Clothing Hong Kong Polytechnic UniversityChina

The dityrosine crosslink plays a vital role in improving mechanical property and stability of polymers,which has been found in most *** has also been exploited in new synthetic ***,the photochemical method provides a path for the formation of dityrosine bonding and shows its unique ***,we review different photo-innitiation approaches that generate the dityrosine *** review may offer new strategies for photo-activated tyrosine unit manipulation.

关键词： materials. photochemical crosslinking

Tracking Control in Presence of Obstacles and Uncertainties for bioinspired Spherical Underwater Robots

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

Journal of Bionic Engineering 2023年第1期20卷 323-337页

作者： Chunying Li Shuxiang Guo Jian Guo Graduate School of Engineering Kagawa UniversityTakamatsuKagawa761-0396Japan Key Laboratory of Convergence Medical Engineering System and Healthcare Technology the Ministry of Industry and Information TechnologySchool of Life Science and TechnologyBeijing Institute of TechnologyBeijing100081China Tianjin Key Laboratory for Control Theory and Applications in Complicated systems and Intelligent Robot Laboratory Tianjin University of TechnologyBinshui Xidao Extension 391Tianjin300384China

During marine missions,AUVs are susceptible to external disturbances,such as obstacles,ocean currents,etc.,which can easily cause mission failure or *** this paper,considering the strong nonlinearities,external disturbances and obstacles,the kinematic and dynamic model of bioinspired Spherical Underwater Robot(SUR)was ***,the waypoints-based trajectory tracking with obstacles and uncertainties was proposed for SUR to guarantee its safety and ***,the Lyapunov theory was adopted to verify the stability and the Slide Mode Control(SMC)method is used to verify the robustness of the control *** addition,a series of simulations were conducted to evaluate the effectiveness of proposed control *** tests,including path-following,static and moving obstacle avoidance were performed which verified the feasibility,robustness and effectiveness of the designed control ***,a series of experiments in real environment were performed to verify the performance of the control *** simulation and experimental results of the study supplied clues to the improvement of the path following capability and multi-obstacle avoidance of AUVs.

关键词： Path following Obstacle avoidance bioinspired.Spherical underwater robot(SUR) Lyapunov theory

Energy Absorption in Functionally Graded Concrete bioinspired by Sea Urchin Spines

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2017年第2期14卷 369-378页

作者： Nicu Toader Werner Sobek Klaus G Nickel institute for Lightweight Structures and Conceptual Design (ILEK) Stuttgart Universitat 70569 Stuttgart Germany institute for Geoscience (IFG) Applied Mineralogy Eberhard-Karls-Universitat Tubingen 72074 Tubingen Germany

Functionally Graded Concrete （FGC） is fabricated at the institute for Lightweight Structures and Conceptual Design （ILEK） by using a layer-by-layer technique with two different technological procedures： casting and dry spraying. Functional gradations are developed from two reference mixtures with diametrically opposed characteristics in terms of density, porosity, compression strength and elasticity modulus. In this study the first mixture consists of Normal Density Concrete （NDC）, with density about 2160 kg·m^-3 while the second mixture helps to obtain a very lightweight concrete, with density about 830 kg·m^-3. The FGC specimens have layers with different alternating porosities and provide superior deformability capacity under bulk compression compared to NDC specimens. In addition, the FGC specimens experienced a graceful failure behaviour, absorbing high amounts of energy during extended compression paths. The porosity variation inside the layout of tested specimens is inspired by the internal structure of sea urchin spines of heterocentrotus mammillatus, a promising role model for energy absorption in biomimetic engineering.

关键词： biomimetic engineering energy absorption sea urchin spine functionally graded concrete graceful failure behaviour

Ultra-resolution scalable microprinting

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2023年第3期9卷 195-207页

作者： Callum Vidler Kenneth Crozier David Collins Department of Biomedical Engineering University of MelbourneMelbourneVICAustralia School of Physics University of MelbourneVictoria 3010Australia Department of Electrical and Electronic Engineering University of MelbourneVictoria 3010Australia Australian Research Council(ARC)Centre of Excellence for Transformative Meta-Optical systems University of MelbourneVictoria 3010Australia The Graeme Clark institute The University of MelbourneParkville 3052 VICAustralia

Projection micro stereolithography(PµSL)is a digital light processing(DLP)based printing technique for producing structured *** this approach there is often a tradeoff between the largest object that can be printed and the minimum feature size,with higher resolution generally reducing the overall extent of the *** ability to produce structures with high spatial resolution and large overall volume,however,is immensely important for the creation of hierarchical materials,microfluidic devices and bioinspired *** this work,we report a low-cost system with 1µm optical resolution,representing the highest resolution system yet developed for the creation of micro-structured parts whose overall dimensions are nevertheless on the order of *** do so,we examine the limits at which PµSL can be applied at scale as a function of energy dosage,resin composition,cure depth and in-plane feature *** doing so we develop a unique exposure composition approach that allows us to greatly improve the resolution of printed *** ability to construct high-resolution scalable microstructures has the potential to accelerate advances in emerging areas,including 3D metamaterials,tissue engineering and bioinspired constructs.

关键词： lithography resolution printing

A biomimetic robot crawling bidirectionally with load inspired by rock-climbing fish

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第1期23卷 14-26页

作者： Jin-rong WANG Yong-xin XI Chen JI Jun ZOU State Key Laboratory of Fluid Power and Mechatronic systems Zhejiang UniversityHangzhou310027China College of Electrical Engineering Zhejiang UniversityHangzhou310027China institute of Marine Science and Technology Shandong UniversityQingdao266237China

Using a unique adhesive locomotion system,the rock-climbing fish(Beaufortia kweichowensis)adheres to submerged surfaces and crawls both forwards and backwards in torrential *** emulate this mechanism,we present a biomimetic robot inspired by the locomotion model of the rock-climbing *** prototype contains two anisotropic adhesive components with linkages connected to a linear *** anisotropic adhesive component consists of one commercial sucker and two retractable bioinspired fin *** fin components mimic the abduction and adduction of pectoral and pelvic fins through the retractable part to move up and *** robot prototype was tested on vertical and inverted surfaces,and worked *** results demonstrate that this novel system represents a new locomotion solution for surface movement without detachment from the substrate.

关键词： Fish kinematics Adhesive locomotion mechanism Fin rays motion Climbing model Bio-inspired robot

Adjustable indentation and vibration isolation performances of nacre-like metamaterial

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

International Journal of Smart and Nano materials 2023年第3期14卷 303-320页

作者： Shushan Zhang Peng Jiang Jixiang Qi Ganchao Chen Yonghuan Wang Ran Tao Zhaoyue Chen Ying Li State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijingPR 100081China Beijing Key Laboratory of Lightweight Multi-Functional Composite materials and Structures Institute of Advanced Structure TechnologyBeijing Institute of TechnologyBeijingPRChina

Along with the living environment,organisms have evolved structures that adapt to specific environments and have better mechanical *** materials learn from nature and improve their mechanical properties by imitating the structure of living *** on the 4D printed shape memory polymer and the bioinspired design method,this research proposes a soft and hard phase hybrid bioinspired metamaterial with shape memory effect and programmable mechanical *** with traditional nacre-like materials,bioinspired materials have adjustable characteristics of mechanical properties,impact resistance,and low-frequency vibration ***,based on the constitutive relation of SMP(Shape memory polymer)material and its numerical simu-lation,an intelligent bioinspired metamaterial is ***,the mechanical properties and vibration isola-tion behavior and adjustability performance of multi-scale bioinspired metamaterials are explained by ***,the adjustable functional mechanism of the deforma-tion and vibration isolation of the bioinspired metamaterial is *** research of these bioinspired metamaterials has broad application prospects in the fields of impact protection and low-frequency vibration absorption.

关键词： Nacre-like metamaterial 4D printed Indentation properties vibration isolation Shape memory effect

Okra‑Like Multichannel TiO@NC Fibers Membrane with Spatial and Chemical Restriction on Shuttle‑Effect for Lithium–Sulfur Batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advanced Fiber materials 2023年第1期5卷 252-265页

作者： Shuai Li Jingchong Liu Linlin Ma Li‑Juan Yu Lanlan Hou Dianming Li Songwei Gao Guichu Yue Zhimin Cui NüWang Xiaoxian Zhao Yong Zhao Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing 100191People’s Republic of China Beijing Key Laboratory for Bioengineering and Sensing Technology Daxing Research InstituteSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China Department of Chemistry College of ScienceHebei Agricultural UniversityBaoding 071001People’s Republic of China Research School of Chemistry Australian National UniversityAustralian Capital TerritoryCanberra 2601Australia School of materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China

It is especially important to coordinately design the structure and composition of the host in lithium–sulfur batteries(LSBs)for improving its physicochemical adsorption and conversion of lithium polysulfide,which can alleviate the harmful shuttle ***,a self-supporting multichannel nitrogen-doped carbon fibers membrane embedded with TiO nanoparticles(TiO@NC)was constructed as the electrode for *** inner channels and the embedded TiO nanoparticles offer spatial confinement and chemical binding for polysulfides,***,the TiO nanoparticles have abundant oxygen vacancies that promote the conversion of *** addition,the nitrogen-doped carbon skeleton can not only serve as highly conductive transportation paths for electrons,but also integrate with the inner channels to sustain the morphology and bear volume expansion during cycling ***,the fabricated self-supporting quadruple-channel TiO@NC ultrathin fibers electrode exhibits a high initial specific capacity of 1342.8 mAh g^(-1)at 0.5 C and high-rate capability of 505.8 mAh g^(-1)at 4.0 *** addition,it maintains 696.0 mAh g^(-1)over 500 cycles with only 0.059%capacity decay per cycle at the high current density of 2.0 *** multichannel configuration combined with TiO nanoparticles provides a synergetic design strategy for fabricating high-performance electrodes in LSBs.

关键词： Multichannel Electrospinning Hierarchical structure Spatial confinement Chemical binding Lithium–sulfur battery

Lens-Oppositional Wild Geese Optimization Based Clustering Scheme for Wireless Sensor Networks Assists Real Time Disaster Management

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer systems Science & Engineering 2023年第7期46卷 835-851页

作者： R.Surendran Youseef Alotaibi Ahmad F.Subahi Department of Computer Science and Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical SciencesChennaiIndia Department of Computer Science College of Computer and Information SystemsUmm Al-Qura UniversityMakkah21955Saudi Arabia Department of Computer Science University College of Al JamoumUmm Al-Qura UniversityMakkah21421Saudi Arabia

Recently,wireless sensor networks(WSNs)find their applicability in several real-time applications such as disaster management,military,surveillance,healthcare,*** utilization of WSNs in the disaster monitoring process has gained significant attention among research communities and ***-time monitoring of disaster areas using WSN is a challenging process due to the energy-limited sensor ***,the clustering process can be utilized to improve the energy utilization of the nodes and thereby improve the overall functioning of the *** this aspect,this study proposes a novel Lens-Oppositional Wild Goose Optimization based Energy Aware Clustering(LOWGO-EAC)scheme for WSN-assisted real-time disaster *** major intention of the LOWGO-EAC scheme is to perform effective data collection and transmission processes in disaster *** achieve this,the LOWGOEAC technique derives a novel LOWGO algorithm by the integration of the lens oppositional-based learning(LOBL)concept with the traditional WGO algorithm to improve the convergence *** addition,the LOWGO-EAC technique derives a fitness function involving three input parameters like residual energy(RE),distance to the base station(BS)(DBS),and node degree(ND).The proposed LOWGO-EAC technique can accomplish improved energy efficiency and lifetime of WSNs in real-time disaster management *** experimental validation of the LOWGO-EAC model is carried out and the comparative study reported the enhanced performance of the LOWGO-EAC model over the recent approaches.

关键词： Disaster management real-time applications wireless sensor networks clustering bioinspired algorithms