Results 21 to 30 of about 4,658 (160)
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Articular cartilage regeneration remains a significant challenge because of its limited intrinsic healing capacity and the inadequacy of conventional treatments for restoring structural and functional integrity. In this study, a novel injectable composite hydrogel scaffold was designed to mimic the extracellular matrix (ECM) of native ...
Zhong‐Lian Wu +13 more
wiley +1 more source
Studies of Electrochemical Performances of Silicon Anodes of Lithium-Ion Battery with Exploring Novel Binders and Si/C Composite Materials [PDF]
, 2015 硅是容量最高的锂离子电池负极材料，理论容量达到4200mAhg-1。但在充放电循环过程中，硅材料发生巨大的体积变化，导致其循环性能差。本论文通过制备特殊结构的硅/碳(Si/C)复合材料和开发新型粘结剂来改善锂离子电池硅基负极的电化学性能。主要结果如下： 一、开发了两种新型的锂离子电池硅基负极粘结剂：(1)利用海藻酸钠和钙离子的交联反应，制备出一种高机械性能的海藻酸水凝胶粘结剂，能够在充放电过程中有效地维持Si/C复合电极的结构稳定性，从而显著地提高其循环性能，经过120周充放电循环后，Si ...
刘杰
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Enhancing the strength of 7000 series high‐strength Al alloys remains a critical challenge to meet the demands of increasingly demanding service environments. In this study, a novel approach is proposed for developing high‐performance Al alloys through a combination of powder mechanical alloying, powder press‐forming, rolling deformation, and ...
Peng‐Fei Ji +4 more
wiley +1 more source
Preparation, Properties and Applications of Bi2O3-Rich Lead-Free Sealing Glass Ceramics [PDF]
, 2012 本研究对富含Bi2O3无铅微晶封接玻璃的制备、性能和应用进行了研究；分别利用傅立叶转变红外分析测试仪（FTIR）、拉曼光谱分析仪、X－射线衍射分析仪（XRD）、示差扫描量热分析仪（DSC）、热膨胀系数仪（DIL）和超高电阻测试仪等分别对该封接玻璃的结构、析晶、玻璃化转变温度（Tg）、玻璃软化温度（Tf）、热膨胀系数（α）和电阻率（ρ）等进行研究。 本文理论研究方面，包含下述3项内容。其中，在第（二）项和第（三）项中特别研究了采用“模压成型—热处理方法”制备的样品过程中，热处理温度对其Tg、Tf ...
杜振波
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International Journal of Applied Linguistics, Volume 35, Issue 3, Page 1121-1133, August 2025.ABSTRACT Although psychological factors such as emotion and engagement have gained increasing attention for their role in language learning success, a substantial gap remains in understanding the sources of boredom and its impact on learners’ engagement, whether behavioural, affective or cognitive, in languages other than English (LOTE).
Xian Zhao, Danping Wang
wiley +1 more source
Research of Ge Junction Technology and Ge Lateral PIN Photodetector [PDF]
, 2015 锗材料因其具有比硅材料更高的载流子迁移率，在通信波段具有高的吸收系数，以及与主流硅工艺相兼容等优点，成为下一代高性能集成电路半导体MOSFET器件沟道的首选替代材料。经过十余年研发，当前Gep-MOSFET的性能已经取得实质性的进展，但相应Gen-MOSFET性能仍未取得突破，除了高k介质与Ge接触产生大量界面态外，还有以下两个原因：首先金属/n-Ge结界面强烈的费米能级钉扎效应和较高的接触势垒引入较大的器件串联电阻；其次Ge中n型杂质扩散严重，激活浓度低，不利于形成n+p浅结。因此，调制金属 ...
魏江镔
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Rare Metals, Volume 44, Issue 3, Page 1833-1843, March 2025.Graphical abstract AbstractThe pressing demand for ultrathin and flexible shields to counter electromagnetic interference (EMI) has sparked interest in Ti3C2Tx MXene materials due to their exceptional electrical conductivity, tunable surface chemistry, and layered structure.
Zhao‐Yang Li +5 more
wiley +1 more source
Light-control Silk Fibroin sol-gel Transitions [PDF]
, 2016 近年来，利用光引发pH改变体系，从空间和时间上来控制各种酸催化和pH响应过程已被广泛地研究。然而这些体系通常需要紫外光或可见光来诱导其光反应，最近科学家们对这些体系在生物化学方面应用的研究主要集中在蛋白质折叠方面。在本论文中，我们首次成功地研发了一种简便且安全的方法来远程控制丝素蛋白的溶胶-凝胶转变。我们将再生丝素蛋白溶液（SF），2-硝基苯甲醛（2-NBA）、上转换纳米粒子（UCNPs）和乙醇结合起来，实现用多种光源来控制丝素蛋白溶胶-凝胶快速转变。2 ...
姜瑶萍
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European Policy Analysis, Volume 10, Issue 3, Page 334-355, Summer 2024.Abstract Recent trends toward mechanistic approaches offer a new perspective in understanding policy change and stability. This paper analyzes causal mechanisms leading to unexpected policy change by using punctuated equilibrium theory. As empirical illustration, the paper presents a case study on the introduction of the German mandatory lobbying ...
Maximilian Schiffers, Sandra Plümer
wiley +1 more source
Ion Irradiation Effects and Evaluation of Al/B4C Neutron Absorbing Materials and Zirconium Alloys [PDF]
, 2015 中子吸收材料和核燃料包壳材料与核燃料安全密切相关。中子吸收材料用于乏燃料的运输和储存中，保持燃料的次临界状态，防止临界事故发生；核燃料包壳材料是防止核燃料和高放射性物质泄漏的重要屏障。本论文主要研究了Al/B4C中子吸收材料和锆合金包壳材料的离子辐照效应，并进行了服役评估。 Al/B4C金属基复合材料具有良好的机械性能，热传导性能和中子吸收性能，主要应用于乏燃料的干式储存罐和乏燃料池格架中。在服役过程中，Al/B4C中子吸收材料不可避免地经受着中子辐照和氦的累积。为了研究辐照效应以及氦在材料中的行为 ...
张飞飞
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