Results 71 to 80 of about 21,616 (149)
Gaoya dianqi, 2017 同步关合工作中,环境温度变化会造成开关动作分散性的加大。文中研究环境温度改变时,影响断路器合闸动作特性的主要因素的变化规律及机构合闸特性的变化。拟合实验数据,得到该结构参数下单稳态永磁机构真空断路器合闸时间与影响因素间的经验公式。研究表明:环境温度改变时,断路器运动部件静态受力（包括静态吸合力及阻尼）是影响断路器合闸特性的主要因素;同时,电容等效串联电阻低温下对断路器合闸特性也有着较大影响。经验公式可以很好地表征各变量与合闸时间的关系,对同步关合技术研究有一定帮助。
王仁丽, 晁雪薇, 田宇, 曾小平
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Fermi Surface Structure Revealed by Quantum Oscillations in Half‐Heusler Semimetal LuAuSn
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The Fermi surface structure in the half‐Heusler semimetallic compound LuAuSn was systematically investigated using quantum oscillation studies of high‐quality single crystals and first‐principles calculations. Clear bulk quantum oscillation signals were observed for multiple complementary physical properties, including magnetization, Hall ...
Yue Lu +12 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT As a promising alternative to sluggish Li2CO3‐based Li‐CO2 electrochemistry, Li2C2O4 offers a favorable 2e− discharge pathway, yet its selective formation and reversible decomposition remain debated. Herein, we propose a nonmetal‐metal synergistic catalyst—B‐Ti coregulated layered transition metal boride Ti18B18O9/graphene (B‐Ti/TiBOG)—to ...
Qiong Peng +8 more
wiley +1 more source
Gaoya dianqi直流接触器是一种集机械、电气等多学科领域的控制元件，在新能源和电动汽车领域中得到了广泛应用，而建模仿真是对直流接触器进行数字化设计的一种有效方法。直流接触器的分闸动作主要依靠其反力系统完成，反力系统在直流接触器电磁系统线圈断电后，接触器内部的电磁吸力消失，整个系统受到重力以及触头弹簧与反力弹簧反力的作用，动铁心连带动触头朝着与合闸相反的方向运动从而完成分闸过程。分闸动作特性是衡量直流接触器性能的重要指标，利用软件仿真能快速得到接触器的分闸动作特性，从而降低直流接触器的设计优化成本 ...
鄢呈旸 +3 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Skin wound injuries are often accompanied by bacterial infections and severe inflammation. Especially, M1‐type macrophages at the wound site can trigger a cascade of inflammatory responses, mediating a vicious cycle of inflammation. Meanwhile, hypoxia further exacerbates vascular damage and constriction in the wound microenvironment, thereby ...
Xianfeng Wang +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Multimodal luminescent materials are crucial for advanced information encryption, real‐time dosimetry, and high‐resolution bioimaging, yet integrating orthogonal stimulus‐responsiveness into a single‐component system is challenging. Herein, we report a Pr3+‐doped Ca3Ga2Ge3O12 (CGGO: Pr3+) garnet phosphor that exhibits orthogonally addressable ...
Qi Chen +10 more
wiley +1 more source
Gaoya dianqi, 2002 介绍一起由线路故障引起220kV母线母差保护动作的特殊故障,结合保护、母差保护动作情况及故障录波图,分析推断了故障的发展过程及线路、母差保护动作的正确性。
林俊昌
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT As a core component in the electrochemical water splitting system, the cathode catalyst is capable of boosting the kinetics of the hydrogen evolution reaction (HER), while the scarcity and expenditure of current noble metal‐based electrocatalysts seriously restrict the large‐scale commercial development of hydrogen manufacturing devices. Here,
Haiyan He +8 more
wiley +1 more source
Gaoya dianqi, 2018 分合闸速度特性是高压断路器的重要特征参数,其大小直接影响高压断路器的工作性能。针对采用常规传感器测量高压断路器速度特性时普遍具有的安装固定困难、影响断路器特性等缺点,文中提出了一种基于机器视觉的速度特性测量方法。此方法通过在高压断路器运动机构表面设置参考标记,使用高速相机在断路器动作时对其进行视频图像采集,经由机器视觉算法处理后,识别得到标记参考点的运动轨迹,进而获得高压断路动触头的速度特性。以12kV永磁真空断路器为例进行了实验,结果表明,此方法可取得与高精度位移传感器较为一致的结果,测量误差小 ...
邓金秋 +3 more
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