检索结果-内蒙古大学图书馆

Biomimetic multi-channel nerve conduits with micro/nanostructures for rapid nerve repair

Bioactive materials 2024年第11期41卷 577-596页

作者： Xinqing Wang Shuo Chen Xiaolei Chen Juan Wu Zhenhua Huang Jing Wang Fangping Chen Changsheng Liu Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237PR China Engineering Research Center for Biomedical Materials of Ministry of Education East China University of Science and TechnologyShanghai200237PR China

Peripheral nervous system(PNS)injuries often lead to significant sensory and motor *** artificial nerve conduits,lacking anisotropic structures,have been associated with prolonged repair time and failures in nerve *** study aimed to address these challenges by developing a novel approach for rapid repair of peripheral nerve injuries(PNI).A 3D oriented fibers scaffold featuring distinct radial(RFs)and longitudinal(LFs)fibers orientations was engineered using coaxial electrospinning and gas directional foaming *** scaffold was then integrated with a shape memory conduit to form a directional multi-channel nerve conduit with micro/*** results revealed that the grooved surface of the fibers significantly improved cellular directional guidance,effectively facilitating the migration of SCs from the periphery towards the center and from the base to the apex of the *** a rat model with a 10 mm nerve defect,the ND-PLATMC/LF ND-PCL scaffold significantly enhanced nerve regeneration and motor function recovery within 4 *** results suggest the potential of this innovative scaffold for efficient repair of the nerve injuries.

关键词： injuries fibers directional

来源：评论

学校读者我要写书评

暂无评论

Protonated-chitosan sponge with procoagulation activity for hemostasis in coagulopathy

引用

Bioactive materials 2024年第11期41卷 174-192页

作者： Zhenhua Huang Dong Zhang Laiqiang Tong Fan Gao Shaozan Zhang Xinqing Wang Yina Xie Fangping Chen Changsheng Liu Engineering Research Center for Biomedical Materials of Ministry of Education East China University of Science and TechnologyShanghai200237PR China Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237PR China

Hemostatic materials are essential for managing acute bleeding in medical ***(CS)shows promise in hemostasis but its underlying mechanism remains incompletely *** unexpectedly discovered that certain protonated-chitosan(PCS)rapidly assembled plasma proteins to form protein membrane(PM)upon contact with platelet-poor plasma(PPP).We hypothesized that the novel observation was intricately related to the procoagulant effect of ***,the study aimed to elucidate the conditions necessary and mechanism for PM formation,identify the proteins within the PM and PCS's procoagulant action at the molecule *** confirmed that the amount of–NH3+groups(>4.9 mmol/g)on PCS molecules played a crucial role in promoting ***–NH3+group interacted with blood's multiple active components to exert hemostatic effects:assembling plasma proteins including coagulation factors such as FII,FV,FX,activating blood cells and promoting the secretion of coagulation-related substances(FV,ADP,etc)by ***,the hemostatic mechanism can be extended to protonated-chitosan derivatives like quaternized,alkylated,and *** the blood clotting index(BCI)experiment,compared to other groups,PCS95 achieved the lowest BCI value(∼6%)within 30 ***-chitosan exhibited excellent biocompatibility and antibacterial properties,with PCS95 demonstrating inhibition effectiveness of over 95%against Escherichia coli(***)and Staphylococcus aureus(***).Moreover,PCS performed enhanced hemostatic effectiveness over chitosan-based commercially agents(Celox™and ChitoGauze®XR)in diverse bleeding *** particular,PCS95 reduced bleeding time by 70%in rabbit models of ***,this study investigated the coagulation mechanism of materials at the molecular level,paving the way for innovative approaches in designing new hemostatic materials.

关键词： sponge incomplete sized

来源：评论

学校读者我要写书评

暂无评论

Localized in‑situ deposition:a new dimension to control in fabricating surface micro/nano structures via ultrafast laser ablation

引用

Frontiers of Optoelectronics 2023年第4期16卷 49-59页

作者： Peixun Fan Guochen Jiang Xinyu Hu Lizhong Wang Hongjun Zhang Minlin Zhong Laser Materials Processing Research Centre Key Laboratory for Advanced Materials Processing Technology(Ministry of Education)School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Controllable fabrication of surface micro/nano structures is the key to realizing surface functionalization for various *** a versatile approach,ultrafast laser ablation has been widely studied for surface micro/nano *** research eforts in this feld have been devoted to gaining more control over the fabrication processes to meet the increasing need for creation of complex *** this paper,we focus on the in-situ deposition process following the plasma formation under ultrafast laser *** an overview perspective,we frstly summarize the diferent roles that plasma plumes,from pulsed laser ablation of solids,play in diferent laser processing ***,the distinctive in-situ deposition process within surface micro/nano structuring is *** experimental work demonstrated that the in-situ deposition during ultrafast laser surface structuring can be controlled as a localized micro-additive process to pile up secondary ordered structures,through which a unique kind of hierarchical structure with fort-like bodies sitting on top of micro cone arrays were fabricated as a *** revealed laser-matter interaction mechanism can be inspiring for the development of new ultrafast laser fabrication approaches,adding a new dimension and more fexibility in controlling the fabrication of functional surface micro/nano structures.

关键词： Ultrafast laser ablation Laser micro/nanofabrication Surface micro/nano structures In-situ deposition Micro-additive fabrication

来源：评论

学校读者我要写书评

暂无评论

Zeolites for the separation of ethylene,ethane,and ethyne

引用

Frontiers of Chemical science and engineering 2024年第9期18卷 137-146页

作者： Binyu Wang Qiang Li Haoyang Zhang Jia-Nan Zhang Qinhe Pan Wenfu Yan State Key Laboratory of Inorganic Synthesis&Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Advanced Energy Catalytic and Functional Materials Preparation College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450012China Key Laboratory of Advanced Materials of Tropical Island Resources(Ministry of Education) School of Chemistry and Chemical EngineeringHainan UniversityHaikou 570228China

The cost-effective separation of ethylene(C_(2)H_(4)),ethyne(C_(2)H_(2)),and ethane(C_(2)H_(6))poses a significant challenge in the contemporary chemical *** contrast to the energy-intensive high-pressure cryogenic distillation process,zeolite-based adsorptive separation offers a low-energy *** review provides a concise overview of recent advancements in the adsorptive separation of C_(2)H_(4),C_(2)H_(2),and C_(2)H_(6)using zeolites or zeolite-based *** commences with an examination of the industrial significance of these compounds and the associated separation ***,it systematically examines the utilization of various types of zeolites with diverse cationic species in such separation *** then it explores how different zeolitic structures impact adsorption and separation capabilities,considering principles such as cation-πinteraction,π-complexation,and steric separation concerning C_(2)H_(4),C_(2)H_(2),and C_(2)H_(6)***,it discusses methods to enhance the separation performance of zeolites and zeolite-based adsorbents,encompassing structural design,modifications,and ion exchange ***,it summarizes current research trends and future directions,highlighting the potential application value of zeolitic materials in the field of C_(2)H_(4),C_(2)H_(2),and C_(2)H_(6)separation and offering recommendations for further investigation.

关键词： zeolite ethylene ethane cation-πinteraction π-complexation

来源：评论

学校读者我要写书评

暂无评论

Tortuosity regulation of two-dimensional nanofluidic films for water evaporation-induced electricity generation

引用

Nano Research 2024年第7期17卷 6192-6202页

作者： Zhihang Liu Chao Liu Anqi Ni Kunpeng Mao Long Chen Liang Xue Jingwen Sun Xin Wang Pan Xiong Junwu Zhu Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094China

Water evaporation-induced electricity generation is a promising technology for renewable energy ***,the output power of some reported two-dimensional(2D)nanofluidic films is still restricted by the relatively weak water–solid interactions within the tortuous *** further enhance the comprehension and utilization of water–solid interactions,it is of utmost importance to conduct an in-depth investigation and propose a regulatory concept encompassing ion ***,we propose tortuosity regulation of 2D nanofluidic titanium oxide(Ti_(0.87)O_(2))films to optimize the ion transport within the interlayer nanochannel for enhanced efficiency in water evaporation-induced electricity generation for the first *** significance of tortuosity in ion transport is elucidated by designing three 2D nanofluidic films with different *** analysis and in situ Raman measurement demonstrate that low tortuosity can facilitate the formation of efficient pathways for hydrated proton transport and promote water–solid ***,devices fabricated with the optimized 2D nanofluidic films exhibited a significantly enhanced output power density of approximately 204.01μW·cm^(−2),far exceeding those prepared by the high-tortuosity 2D nanofluidic *** work highlights the significance of the construction of low tortuosity channels for 2D nanofluidic films with excellent performance.

关键词： water evaporation-induced electricity generation tortuosity ion transport two-dimensional nanofluidic films

来源：评论

学校读者我要写书评

暂无评论

Pseudoelasticity and elastocaloric effect of Fe_(75.5)Ga_(24.5) single crystal

引用

Rare Metals 2023年第6期42卷 1989-1993页

作者： Kang-Yi Xu Jing-Min Wang Qian Yu Chi Zhang Cheng-Bao Jiang Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang UniversityBeijing100191China

-,-and -oriented single crystals of Fe_(75.5)Ga_(24.5) alloy were prepared by optical float zone melting *** pseudoelasticity behavior and elastocaloric effect of the single crystals were investigated,as well as the a... 详细信息

<100>-,<112>-and <149>-oriented single crystals of Fe_(75.5)Ga_(24.5) alloy were prepared by optical float zone melting *** pseudoelasticity behavior and elastocaloric effect of the single crystals were investigated,as well as the associate microstructures.D0_(3) phase structure was realized by solution treatment at 800 0C and annealed at 600℃ for 10 *** compressive deformation behavior exhibits significant dependence on the crystalline *** pseudoelasticity with recoverable strain up to 5% is obtained by compression along <149>*** pseudoelasticity disappears after five deformation *** temperature change is simultaneously detected during the pseudoelasticity,especially during loading process.

关键词： FeGa Pseudoelasticity Elastocaloric effect

来源：评论

学校读者我要写书评

暂无评论

Numerical simulations on the photoelectric performance of AlGaN-based ultraviolet VCSELs with a slope-shaped p-type layer

引用

中国光学(中英文) 2025年第3期18卷 499-509页

作者： WEN Xin-xin JIA Wei ZHAI Guang-mei DONG Hai-liang ZHAO Chao LI Tian-bao XU Bing-she Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030001China Institute of Atomic and Molecular Science Shaanxi University of Science and TechnologyXi’an 710021China

Owing to the low p-type doping efficiency in the hole injection layers(HILs)of GaN-based ultra-violet(UV)vertical-cavity surface-emitting laser(VCSEL),effective hole injection in multi-quantum wells(MQW)is not achieved,significantly limiting the photoelectric performance of UV *** developed a slope-shaped HIL and an EBL structure in AlGaN-based UV *** this study,by improving hole in-jection efficiency,the hole concentration in the HIL is increased,and the hole barrier at the electron barrier layer(EBL)/HIL interface is *** minimises the hindering effect of hole injection.A mathematic-al model of this structure was established using a commercial software,photonic integrated circuit simulator in three-dimension(PICS3D).We conducted simulations and theoretical analyses of the band structure and carrier *** polarisation doping through the Al composition gradient in the HIL en-hanced the hole concentration,thereby improving the hole injection ***,modifying the EBL eliminated the abrupt potential barrier for holes at the HIL/EBL interface,smoothing the valence *** improved the stimulated radiative recombination rate in the MQW,increasing the laser ***-fore,the sloped p-type layer can enhance the optoelectronic performance of UV VCSELs.

关键词： UV VCSEL AlGaN polarisation doping electron barrier layer(EBL) hole injection efficiency

来源：评论

学校读者我要写书评

暂无评论

Aggregation-induced emission-based covalent-organic framework fluorescent probes for clinical detection of aluminum and daily prevention of Alzheimer's disease by naked-eye

引用

science China Chemistry 2025年第4期68卷 1326-1336页

作者： Yun Zhao Enpeng Xi Ziwei Wang Qi Ding Kangning Liu Jinxing Zhu Xuhan Wu Yiling Xie Fuming Yang Nan Gao Hanjun Sun Yajie Yang Ye Yuan Guangshan Zhu Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education and Faculty of Chemistry Northeast Normal UniversityChangchun 130024China School of Chemistry and Materials Science Jiangsu Key Laboratory of New Power BatteriesJiangsu Collaborative Innovation Centerof Biomedical Functional MaterialsNanjing Normal UniversityNanjing 210023China Key Laboratory of Automobile Materials of Ministry of Education&School of Materials Science and Engineering Jilin University Changchun 130022China

Alzheimer's disease(AD)is a neurodegenerative disease and a major threat to human health *** association between aluminum exposure and AD has been widely *** to the ubiquitous presence of aluminum in daily life;aluminum exposure can easily occur whenever and wherever ***;a rapid and sensitive reagent for detecting aluminum and assist in AD daily prevention for potential AD patient population is extremely ***;existing aluminum detection methods rely on precise instruments;which are impractical for household ***;a series of aggregation-induced emission-based covalent-organic framework(AIE-COF)fluorescent probes has been designed with progressively tuned sizes and screened for aluminum *** them;COF-N2 was found to have the highest response towards aluminum specifically;with a fluorescence intensity change of 19.14 times before and after chelation;which could determine the aluminum concentration by naked ***;the molecular mechanism of COF-N2 fluorescence changes was explained and COF-N2 was used for both diagnose the aluminum distribution in various organs of APP/PS1 transgenic mice and quickly determine the aluminum content in daily *** use of AIE-COF probes for aluminum detection provides a promising avenue for developing aluminum related AD clinical diagnosis and daily prevention tools.

关键词： Alzheimer's disease clinical detection daily prevention aluminum exposure aggregation-induced emission

来源：评论

学校读者我要写书评

暂无评论

Exploring a balance between strength and ductility of hexagonal BN nanoplatelet reinforced ZK61 magnesium composite

引用

Journal of Magnesium and Alloys 2024年第5期12卷 1899-1910页

作者： Kewei Zhang Xiaolong Lu Yufeng Sun Shaokang Guan Yao Chen School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Key Laboratory of Advanced Magnesium Alloys in Henan Province Zhengzhou UniversityZhengzhou 450002China Key Laboratory of Advanced Materials Processing&Mold Ministry of EducationZhengzhou 450002China School of Mechanical and Electrical Engineering Soochow UniversitySuzhou 215021China

The practical applications of magnesium(Mg)alloys are usually beset by their relatively low strength and limited *** we attempt to fabricate hexagonal BN nanoplatelet(BNNP)reinforced ZK61 magnesium composites using a combination of spark plasma sintering and friction stir *** resulting composites exhibit microstructural characteristics of homogeneous dispersion of BNNP in Mg matrix with refined equiaxed grains and(0002)basal texture roughly surrounding the pin column *** electron microscopy observation illustrates that trace amounts of Mg_(3)N_(2)and MgB_(2)form at BNNP-Mg interface,in which Mg_(3)N_(2)locates at the basal plane of a BNNP and MgB_(2)grows at its open *** spatial distribution of Mg_(3)N_(2)and MgB_(2)facilitates interfacial wetting and stronger BNNP-Mg interface in such a way that interfacial products act as anchors bonding between *** comparison with monolithic ZK61 alloy,the BNNP/ZK61 composites display simultaneous improvements in yield strength,hardness and ductility,achieving good strength-ductility *** research is expected to shed some light on BNNP potentials for designing and producing magnesium composites with high strength and good ductility.

关键词： BN nanoplatelet Magnesium composite Strength Ductility Spark plasma sintering Friction stir processing

来源：评论

学校读者我要写书评

暂无评论

Benzo[1,2-b:4,5-b']difuran-based Narrow Bandgap Polymers for Efficient Organic Solar Cells Using Perylene Diimides-type Nonfullerene Acceptors

引用

Chinese Journal of Polymer science 2025年第5期43卷 711-717页

作者： Zhen-Yu Wu Jun-Feng Liu Xin-Zhu Tong Yan-Jie Sun Xun-Chang Wang Ren-Qiang Yang Xiang Gao Ming Shao Peng-Cheng Li Zhi-Tian Liu Institute of Materials for Optoelectronics and New Energy Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan430205China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan430074China Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) School of Optoelectronic Materials&TechnologyJianghan UniversityWuhan430056China

The development of narrow-bandgap polymer donors with complementary absorption and matched energy levels for perylene diimides(PDI)-based nonfullerene acceptors(NFAs)has received little *** high-lying highest occupied molecular orbital(HOMO)level and low degree of crystallinity of the star donor polymer PCE10 limit its application in PDI-based Organic solar cells(OSCs).In this study,two benzo[1,2-b:4,5-b′]difuran(BDF)-based narrow-bandgap polymer donors,PBDF and PBDFCl,were synthesized to improve the photovoltaic performance of PDI-based *** smaller BDF moiety with higher electronegativity endows the resulting polymers with stronger aggregation and lower HOMO energy *** power conversion efficiency(PCE)value of the PBDF:Ph(PDI)3-based OSCs was 7.24%,which is much higher than that of PCE10-based OSCs(6.09%).Further chlorination of the conjugated side chain elevated the PCE to 8.84%,which is 1.4 times higher than that of PCE10-based *** results demonstrate the significant contribution of designing novel narrow-bandgap polymer donors to boost the PCE of PDI-based OSCs and highlight the importance of matching the aggregation behaviors of polymeric donor materials with that of NFAs.

关键词： Organic solar cells Narrow-bandgap polymers Benzo[1,2-b:4,5-b']difuran Perylene diimides-type nonfullerene acceptors

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：