Results 11 to 20 of about 13,859 (169)
Wildlife Letters, EarlyView.Using radiotelemetry, we found that the movement and home range of the endangered Sacalia bealei varied significantly across reproductive classes and seasons, with males exhibiting greater movement than females during wet and mating seasons. The species exhibits strong aquatic dependence, favoring deep pools interspaced among riffle‐pool sequences ...
Wing Sing Chan +3 more
wiley +1 more source
Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Managing diabetic wounds requires simultaneously addressing their infectious, oxidative, and regenerative impairments. To address this, this study integrates a piezoelectric BiOCl@CuSe heterojunction (PFM‐verified) into an injectable F127/HA hydrogel, creating an ultrasound‐responsive smart dressing.
Jiayan Guo +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Integrating light emission and electromagnetic wave (EMW) absorption into a single material opens up possibilities for multienvironmental applications. Herein, we propose a novel “molecular engineering‐pyrolysis conversion” strategy to construct a bifunctional system with tunable photoluminescence and efficient EMW absorption performance.
Renjie Wang +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT This study demonstrates a new strategy for modifying the boron content to address stress‐relief cracking (SRC) in the 7CrMoVTiB10.10 alloy. First, coarse‐grained heat‐affected zone (CGHAZ) specimens with different boron contents were prepared via simulated welding thermal cycles.
Dongdong Zhang +3 more
wiley +1 more source
Dianci bileiqi, 2017 为了有效地对埋地电力电缆进行雷电防护,必须合理分析埋地电缆在雷电电磁脉冲影响下产生的感应过电压。分析了雷电对埋地电缆的危害方式,具体介绍了埋地电缆雷电感应过电压计算方法,在EMTP中搭建实际电缆模型,利用model模块变成计算分段电缆感应过电压。分析埋地电缆截面积、电缆排列方式和电缆埋设深度对电缆中感应电流和护套层感应过电压影响。仿真结果表明:埋地电缆截面积越大,感应电流和过电压也越大;电缆排列方式对电缆中感应电流几乎没有影响,对感应过电压存在一定影响,三角排列方式感应过电压最大;电缆埋设越深 ...
季明丽
doaj
Interleaved High Step-Up Current Auto-balance DC/DC Converter In The Photovoltaic Generation System And Its Paralleled Operation [PDF]
, 2016 随着能源和环境问题的日益加剧，光伏电池等新能源并网发电技术得到广泛关注。在光伏并网发电系统中，如何把较低的光伏电池电压转换成并网用的标准母线电压，已成为了重要的研究课题。 本文提出了一种新颖的带耦合电感和开关电容的电流自动平衡高增益DC-DC变换器，该变换器采用耦合电感和开关电容来提升电压增益，同时，主开关管的电压应力大大降低。由于该变换器拓扑具有交叉耦合结构，变换器具备优良电流自动平衡能力。利用交错式操作方式使得输入电流纹波和输出电压纹波都大大减少。此外，在耦合电感的漏感的作用下，开关管实现零电流开通、
廖育贤
core
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Soft‐magnetic materials (SMMs) are indispensable for electrification and sustainable energy systems, yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses. Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic ...
Nairan Wang +6 more
wiley +1 more source
Gaoya dianqi, 2011 1000kV电压互感器是实现特高压电网电能计量及电网保护的关键设备,中国特高压工程所采用的1000kV电压互感器均为自主研制,如用于敞开式变电站的柱式电容式电压互感器,用于GIS站的罐式电容式电压互感器、罐式电磁式电压互感器和电子式电压互感器等。为提高特高压电压互感器技术水平,总结研究经验,笔者介绍了适用于特高压敞开式变电站和特高压全封闭气体绝缘变电站（GIS）的1000kV电压互感器类型及原理,描述了中国特高压工程中1000kV电压互感器样机研制进展 ...
李璿, 王晓琪, 余春雨, 吴士普
doaj
Design of constant voltage and constant current switching power supply [PDF]
, 2015 随着电子科技日新月异的发展，每家每户使用的电器设备越来越多，而电器设备往往需要合适的电源来驱动。特别是带有锂电池的离线设备，比如吸尘器、电动车、手机、数码相机等需要高精度的恒压恒流的充电器，使之合理的充电曲线保证锂电池的充电安全和寿命。 开关电源因其小体积、低功耗、高可靠性、高效率等诸多优点受到广泛的关注。开关电源是通过PWM信号控制MOS器件开和关，使输入连续的直流电变成间断的脉冲，再通过电容电感储能滤波，将间断的脉冲滤成连续的直流电。从而可知，只要调节MOS器件的开 ...
林明威
core