Results 21 to 30 of about 6,591 (172)
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang +9 more
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Numerical investigation on the complex flow of propeller/rotor [PDF]
, 2017 螺旋桨/旋翼旋转产生的流场现象非常复杂，尤其是螺旋桨/旋翼与飞机部件之间的气动干扰对飞机的性能有着重要影响。本文基于非结构重叠网格和自适应网格技术，采用改进延迟分离涡模拟（ImprovedDelayedDetachedEddySimulation，IDDES）方法，对两类螺旋桨/旋翼复杂问题进行了数值模拟研究：一是螺旋桨与飞机部件之间的气动干扰，研究了螺旋桨与短舱、螺旋桨与无人机的气动干扰问题；二是直升机旋翼的桨-涡干扰，研究了旋翼桨尖开孔削弱桨尖涡的机理 ...
王旭
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Simulation and analysis of forced air precooling performance of apples with different fruit diameters [PDF]
Objective: To analyze the effect of apples of different fruit diameters on differential pressure precooling under the same box. Methods: Based on the spherical analogy model and heat transfer theory, the CFD unsteady SST k-ω turbulence model was used to ...
GU Xudong +4 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The design of nanoparticles confined in hollow N‐doped carbon structures is crucial for improving the oxygen reduction reaction (ORR) kinetics, yet achieving this remains a significant challenge. In this work, hollow porous nitrogen‐doped carbon encapsulated FeP/Fe2P (H‐FeP/Fe2P) were successfully constructed via a templating method combined ...
Li‐Xia Wang +8 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2022 为研究腹板开孔对端部约束预应力波纹钢-混凝土组合梁抗火性能的影响，采用有限元软件ABAQUS对该类组合梁在高温作用下的力学性能进行了非线性有限元分析，研究了具有端部约束预应力波纹腹板开孔组合梁的内力、跨中挠度演化过程以及破坏模式，并对其耐火性能进行了参数分析。结果表明：受约束预应力波纹腹板开孔组合梁在高温作用下的破坏模式为开孔截面腹板与端部截面波纹腹板及钢梁下翼缘发生局部屈曲；随着温度的升高，组合梁由压弯发展至拉弯的悬链线阶段；在荷载比相同、孔洞均位于剪弯区的条件下，开孔尺寸越大 ...
周焕廷 +3 more
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Numerical simulations for optimizing the liquid water transport in the gas diffusion layer and gas channels of a PEMFC [PDF]
, 2019 The multiple-relation-time (MRT) lattice Boltzmann method with a high-density-ratio two-phase model was used to simulate liquid water transport in the gas diffusion layer (GDL) and gas channels of a high-current-density fuel cell.
Lei, T +4 more
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Micro-damage model of gas-bearing coal under load and instability identification criteria [PDF]
The distribution of pores and skeletons within coal reservoirs significantly affects the migration of gases and the occurrence of gas dynamic disasters. To further explore the micro-damage mechanisms in gas-containing coal, a detailed study of the micro ...
Baisheng NIE +10 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Sodium‐ion capacitors (SICs) offer high energy and power density with long cycle life, but developing kinetically compatible electrodes remains challenging. This work developed a simple and sustainable strategy to synthesize homologous carbon electrodes from the inner shells of durian husks (ISDH) for high‐performance SICs.
De‐Bing Yan +7 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma +12 more
wiley +1 more source
Dizhen xuebao, 2018 2014年以来，滇南地区高大、开远和易门3口井的井水位出现趋势上升现象。通过开展井孔周边地下水开采情况的调查、降水影响的定量排除、井孔含水层系统应力状态的定量计算、周边区域构造活动的分析以及井孔水体化学组分的分析等工作，认为易门井的水位年动态主要受控于降水，2003年以来的趋势下降和2014年的趋势转折上升与大椿树工业园区的深井开挖抽水密切相关；高大井和开远井的井水位自2014年以来的趋势转折上升现象不完全受控于降水，但与周边地下水的开采亦无直接联系，可能与近几年该区域南北向强挤压为主的构造活动有关。
Xiaojing Hu, Hong Fu, Qiong Li
doaj +1 more source