Results 31 to 40 of about 6,162 (165)
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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Jianzhu Gangjiegou Jinzhan装配式槽钢腹板开孔耗能支撑由中心支撑斜杆两端设置的腹板开孔槽钢构成，开孔槽钢与H型钢支撑之间采用螺栓连接，可避免中心支撑斜杆受压失稳。为研究该支撑的滞回性能，设计了3根开孔形式不同的装配式槽钢腹板开孔耗能支撑试件，对试件开展了低周往复加载试验，并进行了有限元模拟分析。研究结果表明：在轴力作用下，装配式槽钢开孔耗能支撑主要依靠端部槽钢开孔腹板的孔间板件屈服耗能，整个加载过程中支撑主体H型钢未发生失稳；加载过程中螺栓出现了滑移，滞回曲线有不同程度的捏拢；试验中腹板开椭圆孔的试件耗能能力最强 ...
徐奔, 赵宝成, 顾晨姣
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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
, 1992 提供了一种在大口径激波管中降低2区气流雷诺数的方法。采用该方法雷诺数可由通常的10~6～10~7量级降至工10~5量级。实验结果表明采用此方法后2区流场未受明显扰动。给出了驱动压比 P_41与主激波马赫数 ...
俞鸿儒 +3 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
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Jianzhu Gangjiegou Jinzhan为了对比不同开孔形式对腹板开孔钢梁抗冲击性能的影响，比较了腹板开六边形与圆形孔的钢梁在孔间距和孔高不同时的等效抗弯刚度，开展了落锤冲击试验和有限元分析。主要对开孔形式、冲击能量、孔间距、孔高和冲击作用位置进行参数分析。在试验过程中采集落锤冲击力、位移以及孔周围应变。结果表明：六边形腹板开孔钢梁相较于圆形腹板开孔钢梁在落锤冲击作用下产生变形更大；圆形腹板开孔钢梁的冲击力平台值更大，抵抗冲击作用的能力更强，对冲击的耗能能力更强；圆形腹板开孔钢梁产生的最大位移为六边形腹板开孔钢梁的86.49 ...
陈华艳 +7 more
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, 2018 以碳氢燃料为冷却介质的冲击射流冷却在高超声速飞行器及发动机热防护领域有着重要的应用前景。与传统的冲击射流冷却介质水、空气有所不同,碳氢燃料具有复杂的热物性,其冲击射流流场与传热特性将发生显著变化,需要深入研究。本文采用雷诺平均方法结合SST k-ω湍流模型数值研究了相同流量条件下,冲击孔板不同开孔率的航空煤油冲击冷却流动与传热特性。本文的研究表明,煤油通过冲击孔形成高速射流冲击到冷却面,在冲击冷却面产生了很强的换热效果,换热系数由射流滞止区向周围逐渐减。同时,由于多股冲击射流之间的相互作用 ...
仲峰泉 +3 more
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, 2019 微气泡发生器在污水处理中具有重要用途, Venturi式气液两相掺混器在微气泡生成方面具有众多优良特性.采用数值模拟方法研究了Venturi式掺混器结构几何参数对其掺混性能的影响.运用单一变量..
刘康 +4 more
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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
Shuitu Baochi Xuebao, 2020 为研究蒸发阶段不同覆膜开孔条件下土壤水分运动，在室内进行蒸发模拟试验的基础上，采用HYDRUS-1D模型对不同覆膜开孔率和大气蒸发能力条件下土壤剖面含水率和潜水蒸发量动态变化进行了模拟，并与实测资料进行比较。结果表明：土壤剖面含水率同时受大气蒸发能力和覆膜开孔率的共同作用，随覆膜开孔率和大气蒸发能力的增加，土壤剖面含水率减小，且上层土壤含水率差异比下层土壤明显；覆膜开孔率和大气蒸发能力-定时，土壤剖面含水率在蒸发初期有所增加，蒸发后期基本保持稳定；覆膜对潜水蒸发的阻滞作用明显，但开孔率增加到-定数值时 ...
文利军 +5 more
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