Results 31 to 40 of about 11,578 (167)
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT To break electromagnetic wave absorption (EMA) tech's single‐attenuation bottleneck, enhancing multi‐wave absorption synergy in composites is key for microstructure design. This study uses mesoporous hollow carbon spheres to make metal nanospheres with cobalt, iron, and nickel nanoparticles, then encapsulates them via electrospinning into a ...
Wei‐Lian Zhang +10 more
wiley +1 more source
Dianci bileiqi, 2015 针对电涌抑制晶闸管（TSS）在雷电过电压作用下残压、通流及吸收能量的问题。通过对TSS的结构和原理分析,利用组合波发生器模拟雷电过电压,研究不同幅值的雷电过电压作用下TSS的冲击性能,分析TSS两端残压、通流及其吸收能量的变化趋势。得出:在TSS两端施加的冲击电压越大,其残压、通流值及吸收能量越高;TSS的吸收能量与冲击电压有一定的函数关系,但是当TSS的额定击穿电压达到275V及以上时,其吸收能量与冲击电压由幂函数关系变为线性函数关系。为TSS在实际应用中提供理论依据和参考。
李祥超 +3 more
doaj
Study on GaN-Based Light-Emitting Diodes for Visible Light Communications [PDF]
, 2016 得益于GaN基LED的重大突破，可见光通信逐渐发展并拥有广阔的应用前景，成为当下的研究热点。由于GaN是宽禁带的直接带隙半导体材料，GaN基LED具有很高的发光效率，并且已经在照明和显示方面有着广泛的应用基础。另一方面，作为可见光通信系统中的蓝绿光光源，GaN基LED不仅可以极大地降低系统成本，还可以大幅度提高可见光通信系统的实用价值。LED的调制带宽是影响可见光通信系统传输速率的关键因素之一，然而，对于GaN基LED的调制带宽的研究仍然不够完善和深入。本论文旨在探究影响LED调制特性的因素 ...
于欢
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Rare earth elements (REEs) play an irreplaceable role in modern technology and industry. However, due to the highly similar physicochemical properties among REEs, their separation remains a significant challenge. Additionally, REEs often exist in low‐concentration solutions, making efficient REE recovery an urgent task.
Miao‐Miao Huang +6 more
wiley +1 more source
Dianci bileiqi, 2015 为了研究750 kV带间隙避雷器不同本体参数能量吸收特性,选取西北地区典型750 kV系统建立ATP-EMTP计算模型,并选取由D105电阻片组成的500 kV、540 kV和588 kV不同额定电压的750 kV线路避雷器,分别研究在雷击塔顶反击导线和雷电绕击导线时避雷器的吸收能量特性。计算结果表明:雷电反击时,避雷器的吸收能量随着避雷器额定电压的增大而减小,且吸收能量较小;雷电绕击时,避雷器的吸收能量随着避雷器额定电压的增大而增大,且吸收能量较大。从工程实际考虑:建议750 ...
马欢 +4 more
doaj
Studies on Preparation and Properties of Li2MSiO4 (M = Sr, Ca, Ba): Eu2+, N (N = Ce3+, Tb3+) Silicate Phosphor [PDF]
, 2011 白光发光二极管（light-emittingdiode，LED）作为一种很有潜力的固体照明光源，其光效和色度参数以及价格是最为重要的指标，而决定这些指标的则是芯片以及涂覆在芯片上的荧光转换材料。目前，由蓝光氮化镓芯片和黄色YAG荧光粉Y3Al5O12:Ce3+组成的白光LED占领主流市场，其结构简单，利于批量商业化生产。但它是日亚化学公司（NichiaCorporation）拥有的专利；且其YAG荧光粉激发光谱范围（420~490nm）较窄，最大波长只达540nm左右，缺少红光成分；存在局限性。 因此 ...
徐丽丽
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
wiley +1 more source
SWEET1‐mediated glucose transport is crucial for energy availability in Arabidopsis
New Phytologist, Volume 249, Issue 4, Page 1816-1830, February 2026.Summary The stress‐responsive hormone abscisic acid (ABA) is known for its inhibitory effects on various physiological processes, including seed germination, often resulting in energy deprivation. Interestingly, ABA‐induced germination inhibition can be alleviated by exogenous glucose (Glc), mimicking a functional interplay between ABA and sugar ...
Xueyi Xue +3 more
wiley +1 more source
Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT Bangladesh's goal of achieving high‐income status by 2041 requires dependable, low‐emission, and affordable energy. With near‐universal grid coverage and increasing demand, nuclear energy is a strategic asset for long‐term baseload supply. However, the existing financing model, typified by the country's most expensive $12.65 billion Rooppur ...
Hafiz Ahmed
wiley +1 more source
Dianci bileiqi, 2022 为了模拟计算ZnO电阻片在避雷器组限制过电压过程中吸收的能量,笔者针对所选取的电阻片进行冲击电流试验;绘制了在不同电流波形下的静态伏安特性曲线,描述了其与电阻片实际伏安特性的关系,并统计了同批次电阻片伏安特性分布规律;通过曲线拟合的方式建立伏安特性方程进行吸收能量的模拟计算。结果显示,在耐受冲击电流的过程中,电流波形波头时间对电阻片吸收能量计算等效性影响最大,波头时间越长,电阻片所表现出的伏安特性越接近试验绘制的静态伏安特性曲线,即通过静态伏安特性曲线进行能量模拟计算等效性越好。
刘志远 +6 more
doaj