Results 31 to 40 of about 1,244,096 (165)
Dianci bileiqi, 2013 电涌保护器（SPD）的能量配合是低压配电系统防雷工程中的重要课题。基于理论计算和ATP-EMTP仿真,研究一端口限压型SPD在短波（8/20μs）和长波（10/350μs）下的能量配合问题,着重分析SPD级间距离和参数配合对这种配合的影响。提出金属氧化物压敏电阻（MOV）伏安特性研究的一种假设,给出了级间电缆的长度与后级SPD分流比的关系曲线。结果表明:短波情况下,10 m的级间电缆可将后级SPD电流限制在总电流的20%以内;长波情况下,80 m的级间电缆才能达到相近的效果。
姜辉 +5 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Rechargeable aluminium‐ion batteries (RAIBs) are promising candidates for sustainable energy storage owing to their low cost, safety, and resource abundance. However, the lack of durable cathode materials restricts their development. Here, we propose a topology‐guided design strategy by synthesizing three thioether‐bridged naphthoquinone ...
Jia Qiao +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Additive manufacturing, commonly referred to as three‐dimensional (3D) printing, provides the geometric freedom and multi‐material integration needed to build soft medical robots for minimally invasive interventions, prosthetics, and rehabilitation.
Yao Wang +5 more
wiley +1 more source
Auto-focus technology and its application based on image processing
, 2009 Auto-focusing technique is an important method to improve the precision,intelligentization,automatization for the indentation diameter measurement.The paper introduces an auto-focus method of indentation diameter measurement based on image processing ...
Chen, Xiaomei, Yang, Tao, Zuo, Yong
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Dianci bileiqi, 2019 为了有效利用电涌保护器进行雷电防护,需要对雷电过电压作用下配电网SPD配合保护进行分析。本文利用EMTP软件搭建简化配电系统模型对IEEE标准推荐压敏电阻片模型进行仿真冲击,通过累积能量计算前后级SPD失效概率以及整体配合失效概率,计算前后级SPD残压与分流,讨论雷电流的波尾时间、前后级SPD连接电缆长度、通流容量对配合失效概率的影响。研究结果表明:SPD两级高低配合方式下,终端用电设备过电压得到了有效的抑制;前级SPD承受大部分雷电流和能量 ...
李文君, 李鹏飞, 李传荣
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Interface polarization enhancement and impedance matching optimization are the keys to improving the comprehensive performance of microwave absorbing materials (MAMs). Herein, a green synthesis strategy integrating sacrificial template self‐etching, hydrothermal reaction, and annealing treatment is proposed to successfully fabricate urchin ...
Zhenzhen Tian +8 more
wiley +1 more source
, 2008 本论文围绕通过化学和物理方法改性无机有机配位聚合物从而提高其温和条件下的储氢性能，及定向设计合成新型无机有机配位聚合物来展开研究。合成了八种配位聚合物材料，其中五种未见文献报道。 将负载型贵金属催化剂掺杂到无机有机配位聚合物中，制备了催化剂/配合物复合材料。有效的提高了室温条件下配合物的储氢性能。改性前后材料的储氢量分别从无储氢量和0.37 wt% 提高到了0.63和1.14 wt%。 首次通过浸渍还原的方法，制备了一系列负载镍的多孔无机有机配位聚合物，有效地提高了温和条件（100 ℃以下 ...
刘颖雅
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Gaoya dianqi, 2014 适应智能变电站一次设备智能化的迅速发展,研制了新一代整合型变压器智能组件,根据特性功能划分,把测量IED、风冷控制IED、有载分接开关控制IED、非电量保护IED整合为变压器综合监测控制智能组件,结合变压器的就地运行情况完成智能非电量保护、风冷控制、有载分接开关控制,实现变压器智能控制、运行状态监视和综合判断等功能。经过测试和试验,将在北京某新建智能变电站配合变压器本体运行。
包伟 +4 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Aqueous zinc‐ion batteries are plagued by anode challenges such as dendrite growth and corrosion, which stem from intrinsic surface heterogeneity. Although constructing a homogeneous interfacial layer is a promising strategy, conventional electrolyte additives often suffer from incomplete or unstable coverage.
Ke Huang +6 more
wiley +1 more source
, 1995 黄绵土坡耕地上连续１２年施肥试验的结果表明，施氮肥对提高作物产量的效果不显著，施磷肥效果较好，氮和磷配合施效果更好；有机肥与氮或与氮，磷配施，可大幅度提高作物产量 ...
翟连宁, 吴瑞俊, 郑剑英
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