Results 11 to 20 of about 16,808 (168)
Integrative Conservation, EarlyView.First confirmed breeding of the Brown Hornbill in China, documented through cooperative feeding in Shangyong Protected Area. ABSTRACT The Brown Hornbill (Anorrhinus austeni), a Near Threatened frugivore, reaches the northern edge of its distribution in southern Yunnan, China, yet breeding had not been previously documented with site‐attributed nests in
Junsong Li +8 more
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Rare Metals, EarlyView.ABSTRACT The poor Zn chemistry of Zn metal anode and sluggish reaction kinetics of cathodes at high mass loadings are two crucial issues for hindering the application of aqueous Zn‐ion batteries (AZIBs). Herein, the hierarchical porous N‐doped carbon fibers (HPNCFs) were proposed to simultaneously optimize the reversibility of Zn plating/stripping of ...
Song Yang +6 more
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Rare Metals, EarlyView.ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
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Rare Metals, EarlyView.ABSTRACT Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large‐scale and cost‐effective engineering application of magnesium alloys. In this work, guided by first‐principles calculations, we tailored the τ‐Mg32(Al,Zn)49 phase and optimised twin boundary, thereby designing and successfully ...
Yun‐Xuan Zhou +8 more
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Jianzhu Gangjiegou Jinzhan, 2021 为了研究部分包裹混凝土组合(PEC)柱(弱轴)与型钢梁对穿高强螺栓端板连接节点的抗震性能,考虑端板厚度、盖板厚度以及节点构造形式3个参数,设计了两种不同构造的梁柱节点,对其进行低周往复荷载试验和有限元模拟,分析了各设计参数对试验节点滞回性能、承载能力、节点刚度、延性和耗能能力等指标的影响。研究结果表明:盖板厚度由14mm增加至16mm时,节点承载力提高了33.91%,初始刚度提高了14.9%,延性降低了18.9%;端板厚度由12mm增加至14mm时,节点承载力提高了19.93%,初始刚度提高了15.1%,
赵根田 +5 more
doaj
Multi‐Functional S‐HA/ASTA NPs Coating on Biodegradable ZE21B Alloy for Cerebrovascular Applications
Rare Metals, EarlyView.ABSTRACT Magnesium (Mg) and its alloys have attracted extensive attention of researchers in the field of cerebrovascular implants due to their good mechanical properties and biosafety. However, rapid degradation and delayed endothelialization pose challenges. To address these issues, this study introduces a multifunctional composite coating.
Aqeela Yasin +4 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 为研究低屈服点钢材LY100在反复拉力作用下的力学性能,设计LY100钢与Q345钢或Q235钢焊接连接的材性试件,共进行4组18个材性试件的单调和反复受拉加载试验研究。获得6种不同加载制度下试件的荷载-位移曲线、应力-应变曲线、滞回性能、超低周疲劳破坏机理以及延性特征等。研究结果表明,焊接接头对试件的超低周疲劳性能有不利影响,焊接接头使LY100钢材力学性能的稳定性和延性变差;LY100钢与Q345钢或Q235钢焊接后,材性试件的强度提高但延性下降;反复拉力作用下,带有焊接接头的材性试件呈现强度硬化 ...
南子森, 李海锋, 罗俊, 孙伟
doaj
Rare Metals, EarlyView.ABSTRACT The limited osteogenic capacity of magnesium phosphate cement (MPC) has constrained its biomedical applications, underscoring the necessity to develop MPC with enhanced physical properties and bone‐forming capabilities. In this study, a multifunctional MPC system was developed by incorporating zoledronic acid‐loaded near‐infrared (NIR ...
Bin Wang +8 more
wiley +1 more source