Results 21 to 30 of about 359,392 (164)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Giga‐casting, a near‐net‐shape manufacturing process widely used in sectors such as new energy vehicles and aerospace, demands aluminum alloys with high integration, efficiency, and comprehensive performance. However, traditional die‐cast alloys still face two core bottlenecks: the strength–ductility trade‐off and high‐temperature ...
Zhanwei Su +3 more
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Non‐Members in a Tight Spot: How Norway Navigated Autonomy in EU Pandemic Management
Review of Policy Research, Volume 43, Issue 3, May 2026.ABSTRACT This study offers new insights into how closely integrated non‐member states navigate tensions between autonomy and dependence when urgent policy responses are required within complex supranational frameworks. It does so by exploring how these non‐members exercise their “wriggle room”—a tailored sub‐category of the broader concept of autonomy ...
Sjoerd Alexander de Winter
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The utilization of carbonaceous anodes in electrochemical systems, particularly potassium‐ion batteries (PIBs), remains hindered by sluggish kinetics and modest capacities, which are caused by the intrinsic ion storage mechanisms and constrained interlayer spacings.
HaiSong Chen +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Sodium‐ion batteries (SIBs) have emerged as promising candidates for large‐scale energy storage due to their cost‐effectiveness and resource abundance. However, challenges such as sluggish ion diffusion kinetics, structural degradation, and interfacial instability hinder their practical applications.
Yunze Wang +7 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2006 目的观察白芍总苷对急性心肌梗死犬微量元素及心肌超微结构的影响。方法取杂种犬30只,随机分为5组（每组6只）,分别为模型对照组、阳性对照药物（复方丹参注射液）组,白芍总苷2.0、4.0、8.0mg·kg-1剂量组;采用结扎麻醉开胸犬左冠状动脉前降支（LAD）产生急性心肌缺血模型,观察白芍总苷对微量元素及心肌超微结构的影响。结果与模型对照组比较,白芍总苷组微量元素铜（Cu）含量显著减少 ...
孙明莉 +5 more
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT This study introduces a novel velocity‐iterative directional annealing (IDA) strategy to overcome stagnation challenges in columnar grain growth of Ti‐48Al‐2Cr‐2Nb alloys. By dynamically adjusting hot zone migration rates across iterative cycles, the IDA protocol achieved 92.2% synchronization between anisotropic α‐grain boundary (GB ...
Zedong Liu +6 more
wiley +1 more source
Guangtongxin yanjiu, 2016 提出了一种基于双微环引起范诺共振效应实现超窄带滤波的微环谐振滤波器,通过泵浦波导和微加热装置使其同时具备有源和可调谐性能。通过耦合模理论,推导了该结构的透射率及超窄带带宽公式,并利用MATALAB软件模拟了在滤波器结构中注入增益对超窄带带宽和滤波器的透过率的影响,以及微环波导的热光效应对滤波器谐振波长的影响。仿真结果表明,在滤波器中注入增益能增大透过率,压缩滤波器的超窄带带宽,且微环波导的热光效应可使谐振波长发生红移或蓝移。
郑加金 +3 more
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Ceramic reinforcement is crucial for crafting ultrastrong and wear‐resistant metallic components. However, pronounced stress concentration and strain incompatibility at ceramic–metal interfaces often trigger microcrack initiation and ceramic spalling exacerbating friction under sliding conditions.
Dongting Li +8 more
wiley +1 more source
Bioinspired 3D‐Printed NiTi Metamaterials With Bivalve‐Like Crossed‐Lamellar Structures
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Metamaterials demonstrate unique mechanical properties and functional performance owing to their distinctive topological spatial structures. In this study, by mimicking the natural Saxidomus purpuratus shell, bioinspired crossed‐lamellar architectures with interlamellar apex angles ranging from 60° to 150° were designed and fabricated in NiTi ...
Yu Chen +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Constructing a porous scaffold with the essential features of natural cancellous bone, including structural architecture and biochemical cues, is one of the pivotal factors for effective bone regeneration. In this study, a biomimetic composite porous Gelatin fibrous scaffold (SrHA/Gelatin) incorporating ultralong strontium‐doped hydroxyapatite
Yin‐Chuan Wang +8 more
wiley +1 more source