Results 21 to 30 of about 409,569 (152)
Gongye shui chuli, 2010 对吸附2,4-二氯酚(DCP)后的颗粒活性炭(GAC)进行了微波再生研究,考察了微波功率、微波辐照时间和GAC用量对DCP解吸和GAC损耗的影响。结果表明,DCP解吸率随着微波功率、辐照时间以及GAC用量的增加而提高,但相应的GAC损耗量亦随之增加。微波功率420 W,辐照时间3 min,饱和吸附DCP的GAC 5 g,DCP解吸率达95.5%,而GAC损耗量仅为9.1%。通过测定多次再生后GAC的碘值,表明2次吸附-再生循环后GAC碘值超过了新鲜GAC的碘值,5次循环后GAC碘值下降不明显。
叶群峰 +5 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The composition and structural characteristics of metacomposites are crucial for tuning their negative electromagnetic parameters; however, the lack of a clear structure–property relationship severely limits their application in dielectric and magnetic fields.
Chunyuan Deng +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT In recent years, materials capable of achieving efficient electromagnetic wave (EMW) absorption over a broad frequency range have attracted widespread attention. Such materials are not only significant in mitigating electromagnetic interference and pollution caused by the extensive use of electronic devices but also demonstrate outstanding ...
Maoxia Lu +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT High‐capacity SiOx/graphite (SiO/G) anodes offer great potential for advancing lithium‐ion battery technology; however, their practical application is limited by low initial coulombic efficiency (ICE) and rapid capacity decay. These challenges primarily arise from unstable phase transitions and the formation of the solid electrolyte interphase
Wan‐Xing Zhang +14 more
wiley +1 more source
Gaoya dianqi, 2007 对550kV/4000A SF6 GIS用母线多点接地与单点接地系统中额定运行条件下不同罐体材料、不同壁厚罐体上感应电流、感应电流形成的损耗功率及其阻抗特性进行了分析计算;比较了接地方式、罐体材料及罐体壁厚对损耗功率及母线阻抗特性的影响。分析结果表明:在多点接地系统中,当罐体材料为铝材和不锈钢材时罐体损耗功率随罐体壁厚的增大而减小,罐体材料为锅炉钢时罐体损耗功率几乎不随罐体壁厚变化而变化,当罐体材料为不锈钢材和锅炉钢时的损耗功率分别是罐体材料为铝材时损耗功率的14倍和32倍。在单点接地系统中 ...
魏俊梅, 林莘, 魏长宇
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT MXenes have been widely investigated as microwave absorption (MA) materials because of their unique properties. This study introduces a terminal bond manipulation strategy to enhance charge transfer and polarization in Ti3C2Tx, optimizing its MA performance.
Xiang Fang +8 more
wiley +1 more source
Gaoya dianqi, 2023 基于模块化多电平换流器的柔性直流输电在电力传输领域有着广阔的应用前景，而主回路母线的大电流会在功率模块的铁磁框架中产生涡流损耗，导致不必要的温升。因此文中针对柔性直流输电换流阀的功率模块建立电磁模型，对其进行电磁—热耦合仿真分析，得出了涡流损耗和温度的分布特征。根据仿真结果及相关分析，提出了3种改进温升问题的方法，对功率模块设计具有一定的指导意义。最后通过实验验证了仿真结果的真实性和改进方案的有效性，为今后功率模块的设计制造和模块化多电平换流器（modular multilevel converter ...
张艳梅 +5 more
doaj
MXene‐Based Materials: Compositional Engineering for High‐Performance Microwave Absorption
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials (MAMs), such as high absorption efficiency, lightweight, and environmental stability, making the development of advanced MAMs urgent for both civilian and national defense applications ...
Pan‐Pan Zhou +8 more
wiley +1 more source
, 2012 采用半导体玻璃/有机聚合物作为材料,利用禁带效应,设计了传输波段中心波长位于10.6μm处的空心Bragg（布拉格）光纤。利用COMSOL Multiphysics仿真软件,分析了径向包层数对基模（HE11）传输损耗的影响。结果表明,当包层数增至20层时,其损耗值已降至0.051 4dB/m,明显优于普通硫系化合物光纤最低所能达到的0.6dB/m。这种Bragg光纤既可用于医用高功率二氧化碳激光传输 ...
陈鹤鸣 +4 more
core +1 more source