检索结果-内蒙古大学图书馆

Bioactive fibrous scaffolds with programmable release of polypeptides regulate inflammation and extracellular matrix remodeling

引用

Regenerative Biomaterials 2023年第1期10卷 522-532页

作者： Zehong Xiang Xinghua Guan Zhifang Ma Qiang Shi Mikhail Panteleev Fazly I.Ataullakhanov State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin 130022China University of Science and Technology of China HefeiAnhui 230026China Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function Soochow UniversitySuzhou 215123China Dmitry Rogachev National Research Center of Pediatric Hematology Oncology and ImmunologyMoscow 117198Russia Faculty of Physics Lomonosov Moscow State UniversityMoscow 119991Russia

Inflammation manipulation and extracellular matrix(ECM)remodeling for healthy tissue regeneration are critical requirements for tissue engineering *** this end,the bioactive polycaprolactone(PCL)-based scaffolds are fabricated to release aprotinin and thymosinβ4(Tβ4)in a programmable *** core part of the fiber is composed of hyaluronic acid and Tβ4,and the shell is PCL,which is further coated with heparin/gelatin/aprotinin to enhance *** in vitro assay demonstrates that the controlled release of aprotinin prevents initial excessive *** subsequent release of Tβ4 after 3 days induces the transition of macrophages from M1 into M2 *** manipulation of inflammatory response further controls the expression of transforming growth factor-βand fibroblast activation,which oversee the quantity and quality of ECM *** addition,the gradual degradation of the scaffold allows cells to proliferate within the *** vivo implant evaluation convinces that PCL-based scaffolds possess the high capability to control the inflammatory response and restore the ECM to normal ***,our work paves a new way to develop tissue engineering scaffolds for inflammation manipulation and ECM remodeling with peptide-mediated reactions.

关键词： bioactive scaffolds inflammation control extracellular matrix remodeling polypeptide release electrospinning

来源：评论

学校读者我要写书评

暂无评论

Highly Dispersive Co@N-C Catalyst as Freestanding Bifunctional Cathode for Flexible and Rechargeable Zinc–air Batteries

引用

Energy & Environmental Materials 2022年第2期5卷 543-554页

作者： Yu Ma Ding Chen Weijun Li Yapeng Zheng Lin Wang Gang Shao Qiao Liu Weiyou Yang College of Materials Science and Engineering Hunan UniversityChangsha 410082China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China Institute of Materials Ningbo University of TechnologyNingbo 315211China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

The design of efficient cathode with great cycle performance,high flexibility,and low cost is essential for the commercialization of zinc–air battery(ZAB).Herein,we report the exploration of freestanding bifunctional cathode with rationally designed structures,namely,tiny Co nanoparticles embedded in Ndoped carbon nanofiber aerogels,which have desired features including uniform Co dispersity,balanced distribution of N-C species,hierarchically porous structure with increased fraction of meso-to micropores,and moderate amounts of ***,the as-fabricated cathodes exhibit positive half-wave potential of 0.82 V for oxygen reduction and small overpotential of 350 mV at 10 mA cm^(−2) for oxygen evolution,respectively,which deliver smaller reversible oxygen electrode index(0.76 V)than the commercial Pt/C+RuO_(2)(0.80 V)and most Co-based electrocatalysts ever ***,the as-constructed liquid rechargeable ZAB behaves high peak power density(160 mW cm^(−2)),large specific capacity(759.7 mAh g^(−1) at 10 mA cm^(−2),tested after 120 h of OCV tests),and robust stability over 277 ***,the as-assembled quasi-solid-state ZAB using such freestanding cathode represents excellent mechanical flexibility and outstanding cycle performance,regardless of being serviced under extremely bending conditions from 0°to 180°,underscoring their promising applications as durable bifunctional cathode for portable metalair batteries.

关键词： bifunctional cathode carbon nanofiber aerogels Co nanoparticles freestanding cathode zinc-air batteries

来源：评论

学校读者我要写书评

暂无评论

A Bionic Flexible-bodied Underwater Glider with Neutral Buoyancy

引用

Journal of Bionic Engineering 2021年第5期18卷 1073-1085页

作者： Yaqiang Zhu Yuhong Liu Shuxin Wang Lianhong Zhang Yanhui Wang Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education School of Mechanical EngineeringTianjin UniversityTianjin 300350China The Joint Laboratory of Ocean Observing and Detection Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

The buoyancy of traditional Underwater Glider(UG)with a rigid hull is aff ected by the changing marine parameters,making it difficult for the vehicle to dive deeper with good motion *** the present work,the development of a novel UG for neutral buoyancy,which is equipped with a Flexible-Liquid-Rigid(FLR)composite hull,is *** innovative hull that imitates the buoyancy regulation mechanism of marine organisms is easily adaptable to the changing marine *** rigid part of the composite hull withstands hydrostatic pressure for inner function modules of the *** liquid of the composite hull mainly serves as a buoyancy compensation to mitigate the eff ect of buoyancy variation caused by the changing marine *** flexible covering provides a good hydrodynamic shape for the vehicle under the internal liquid *** buoyancy variation due to the composite hull compression as well as changes of seawater density and temperature was comprehensively considered in the design process and integrated to the dynamic *** addition,sea trials were performed to verify the motion characteristics of the proposed *** results reveal that the Flexible-bodied Underwater Glider(FUG)has a better gliding performance in practice.

关键词： Bio-inspired buoyancy regulation Flexible-bodied vehicle Composite hull Adaptable buoyancy compensation

来源：评论

学校读者我要写书评

暂无评论

design of Intentional Eye-blink Signal Acquisition and Control System Based on Pressure Sensor 7

Design of Intentional Eye-blink Signal Acquisition and Contr...

引用

7th International Conference on Intelligent Computing and Signal Processing, ICSP 2022

作者： Shao, Xueqi Ning, Haonan Yang, Wenjun Niu, Yafeng Southeast University School of Mechanical Engineering Department of Industrial Design Nanjing China National Key Laboratory of Science and Technology on Aircraft Control Xi'an China

ISBN: (纸本)9781665478571

Eye-blink control means that users blink intentionally to realize human-computer interaction. An intentional eye-blink signal acquisition and control system based on flexible pressure sensor is designed, which aims to control the object through simple eye movements such as blinking and winking. The system uses two pressure sensors to collect the blink signals at the orbicularis oculi muscles of the left and right eyes respectively. The software part realizes the acquisition and recognition of six intentional eye-blink signals, and transmits blink-control instruction signals through Bluetooth, so as to realize the control of the remote-controlled vehicle. The advantage of this system is that it is not affected by illumination and does not need GUI interface for control. The availability of the system is qualified after system test. © 2022 IEEE.

关键词： Human computer interaction

来源：评论

学校读者我要写书评

暂无评论

Characterization of Anisotropy in Additively Manufactured Materials through Instrumented Indentation Testing

引用

Chinese Journal of Mechanical Engineering 2025年第1期38卷 1-16页

作者： Zhuoshao Cai Zhiwei Yang Liang Meng Kaijie Lin Yuliang Hou Thaneshan Sapanathan Jihong Zhu Weihong Zhang State IJR Center of Aerospace Design and Additive Manufacturing Northwestern Polytechnical UniversityXi’an 710072China State-Owned Sida Machinery Manufacturing Company Xianyang 712203China Jiangsu Provincial Engineering Laboratory for Laser Additive Manufacturing of High-Performance Metallic Components College of MaterialsScience and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China School of Mechanical and Power Engineering Zhengzhou UniversityZhengzhou 450001China Curtin Corrosion Centre WA School of Mines-MineralsEnergy and Chemical EngineeringFaculty of Science and EngineeringCurtin UniversityPerthAustralia

The accurate characterization of anisotropy for additively manufactured materials is of vital importance for both highperformance structural design and printing processing *** avoid the repetitive and redundant tensile testing on specimens prepared along diverse directions,this study proposes an instrumented indentation-based inverse identification method for the efficient characterization of additively manufactured *** the present work,a 3D finite element model of indentation test is first established for the printed material,for which an anisotropic material constitutive model is *** have demonstrated that the indentation responses are information-rich,and material anisotropy along different directions can be interpreted by a single indentation ***,an inverse identification framework is built,in which an Euclidean error norm between simulated and experimental indentation responses is minimized via optimization algorithms such as the Globally Convergent Method of Moving Asymptotes(GCMMA).The developed method has been verified on diverse printed materials referring to either the indentation curve or the residual imprint,and the superiority of this latter over the former is confirmed by a better and faster convergence of inverse *** validations on 3D printed materials(including stainless steel 316L,aluminum alloy AlSi10Mg,and titanium alloy TC4)reveal that the developed method is both accurate and reliable when compared with material constitutive behaviors obtained from uni-axial tensile tests,regardless of the degree of anisotropy among different materials.

关键词： Additive manufacturing Anisotropy property Inverse identification Indentation test

来源：评论

学校读者我要写书评

暂无评论

Suppression of Microwave Leakage by Photonic Crystals

Suppression of Microwave Leakage by Photonic Crystals

引用

2022 International Applied Computational Electromagnetics Society Symposium, ACES-China 2022

作者： Wang, Qingyao Shi, Xinyang Fang, Chonghua Science and Technology on Electromagnetic Compatibility Laboratory China Ship Development and Design Centre Wuhan China Wuhan Maritime Communication Research Institute Wuhan China

ISBN: (纸本)9781665452366

The idea of using photonic crystal band gap to suppress the leakage of industrial microwave equipment is proposed, and its feasibility is proved by simulation experiments. The band structure of photonic crystal is adjusted to control the electromagnetic wave. Compared with the traditional microwave suppressor, this method has better suppression performance and lower manufacturing cost, and its application range is wider than the traditional suppressor. © 2022 IEEE.

关键词： Crystal structure

来源：评论

学校读者我要写书评

暂无评论

Microstructure and wear behavior of laser-cladded WC matrix composite coatings with different TiC/Ni contents on titanium alloys

引用

Ceramics International 2025年

作者： Zhang, Yongshi Liu, Zhenguang Yang, Chunguang Wang, Xiaonan Sun, Mingyan Chen, Shan Xu, Guoxiang School of Materials Science and Engineering Jiangsu University of Science and Technology Zhenjiang212100 China State Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology Baotou014030 China School of Iron and Steel Soochow University Suzhou215021 China

WC-based ceramic composite was fabricated on a Ti6Al4V surface using laser-cladding technology with different Ni alloy and TiC contents. The microstructure, microhardness, and tribological properties of the prepared composite coatings were characterized by analyzing phase, surface morphology, elemental distribution, wear depth profiles, and wear rate. The results show that the main phases of the prepared ceramic coatings comprised of TixW(1-x), TiC, α-Ti, and Ti2Ni-Ti3Al eutectic structure. The coating structure evolution was influenced by solidification thermodynamics and kinetics;as the temperature decreases, the dendritic TiC and chunk solid solution TixW(1-x) solidified first, followed by the transformation of β-Ti into α-Ti. Owing to the similar precipitation temperatures, the Ti2Ni-Ti3Al eutectic structure precipitated. The microhardness and wear resistance of the Ti6Al4V surface were improved by the prepared laser-cladding composite coatings, which can be attributed to the TixW(1-x) and TiC hard-enhanced phases. Adhesive, oxide, and abrasive wears were the main wear mechanisms of the prepared coatings. The prepared composite coatings exhibited pitting and galvanic corrosion in acidic solutions. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Titanium alloys

来源：评论

学校读者我要写书评

暂无评论

Microwave electrometry with Rydberg atoms in a vapor cell using microwave amplitude modulation

引用

Chinese Physics B 2024年第5期33卷 65-74页

作者：郝建海贾凤东崔越王昱寒周飞刘修彬张剑谢锋白金海尤建琦王宇钟志萍 School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy TechnologyKey Laboratory of Advanced Reactor Engineering and Safety of Ministry of EducationTsinghua UniversityBeijing 100084China Science and Technology on Metrology and Calibration Laboratory Changcheng Institute of Metrology & MeasurementAviation Industry Corporation of ChinaBeijing 100095China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China

We have theoretically and experimentally studied the dispersive signal of the Rydberg atomic electromagneticallyinduced transparency(EIT)Autler–Townes(AT)splitting spectra obtained using amplitude modulation of the microwave(MW)electric *** addition to the two zero-crossing points interval△f_(zeros),the dispersion signal has two positive maxima with an interval defined as the shoulder interval△f_(sho),which is theoretically expected to be used to measure a much weaker MW electric *** relationship of the MW field strength E_(MW)and△f_(sho)is experimentally studied at the MW frequencies of 31.6 GHz and 9.2 GHz *** results show that△f_(sho)can be used to characterize the much weaker E_(MW)than that of△f_(zeros)and the traditional EIT–AT splitting interval△f_(m);the minimum E_(MW)measured by△f_(sho)is about 30 times smaller than that by△f_(m).As an example,the minimum E_(MW)at 9.2 GHz that can be characterized by△f_(sho)is 0.056 mV/cm,which is the minimum value characterized by the frequency interval using a vapor cell without adding any auxiliary *** proposed method can improve the weak limit and sensitivity of E_(MW)measured by the spectral frequency interval,which is important in the direct measurement of weak E_(MW).

关键词： quantum sensor Rydberg atoms electromagnetically induced transparency amplitude modulation

来源：评论

学校读者我要写书评

暂无评论

Efficient SVV stabilized triangular spectral element methods for incompressible flows of high Reynolds numbers

引用

Advances in Aerodynamics 2022年第1期4卷 58-77页

作者： Lizhen Chen Tao Tang Chuanju Xu Beijing Computational Science Research Center Beijing100193People’s Republic of China Division of Science and Technology BNU-HKBU United International CollegeZhuhaiGuangdongPeople’s Republic of China Guangdong Provincial Key Laboratory of Computational Science and Material Design Southern University of Science and TechnologyShenzhenPeople’s Republic of China School of Mathematical Sciences and Fujian Provincial Key Laboratory of Mathematical Modeling and High-Performance Scientific ComputingXiamen UniversityXiamen361005People’s Republic of China

In this paper,we propose a spectral vanishing viscosity method for the triangular spectral element computation of high Reynolds number incompressible *** can be regarded as an extension of a similar stabilization technique for the standard spectral element *** difficulty of this extension lies in the fact that a suitable definition of spectral vanishing viscosity operator in non-structured elements does not exist,and it is not clear that if a suitably defined spectral vanishing viscosity provides desirable dissipation for the artificially accumulated *** main contribution of the paper includes:1)a well-defined spectral vanishing viscosity operator is proposed for non-standard spectral element methods for the Navier-Stokes equations based on triangular or tetrahedron partitions;2)an evaluation technique is introduced to efficiently implement the stabilization term without extra computational cost;3)the accuracy and efficiency of the proposed method is carefully examined through several numerical *** numerical results show that the proposed method not only preserves the exponential convergence,but also produces improved accuracy when applied to the unsteady Navier-Stokes equations having smooth ***,the stabilized triangular spectral element method efficiently stabilizes the simulation of high Reynolds incompressible flows.

关键词： Navier-Stokes equations Triangular spectral element method Spectral vanishing viscosity

来源：评论

学校读者我要写书评

暂无评论

Investigation of turbulent prt model and the segmentation rule for lbe turbulent heat transfer

Investigation of turbulent prt model and the segmentation ru...

引用

2020 International Conference on Nuclear Engineering, ICONE 2020, collocated with the ASME 2020 Power Conference

作者： Peiying, Li Jian, Deng Lei, Zhong Libo, Qian Rong, Cai Yugao, Ma Hongxing, Yu Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

ISBN: (纸本)9780791883785

With liquid metal like lead-bismuth alloy(LBE) acting as a coolant for nuclear reactors, it is necessary to use a more accurate heat transfer relationship and a more reliable Prt model for the low Pr fluid. Because of the low Pr of liquid metal, the thermal conductivity is more dominant than the momentum transfer, which is quite different from ordinary fluids. In this case, the turbulent Prt can better reflect the heat transfer process. In this study, the Prt=A1+A2/Pr form is selected, and the corresponding coefficients are obtained by the renormalization group analysis method, then corrected by Pr. Furthermore, the applicable range and segmentation rule of the turbulent Prt model are discussed, and the obtained Prt segmentation theoretical model is written into CFD. The result shows that, compared with the previously unmodified model, the radial temperature distribution and Nusselt number (Nu) of the annular and bundle channel obtained by RANS method with the improved Prt model is in good agreement with experimental results, and the deviations are within 5%. It is proved that the turbulent Prt segmentation theoretical model proposed in this study is effective and can represent the heat transfer characteristics of liquid metal from the mechanism. © 2020 American Society of Mechanical Engineers (ASME). All rights reserved.

关键词： Liquid metals

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：