Results 31 to 40 of about 12,492 (169)
Structure, Magnetic and Electronic Transport Properties of New-Type Magnetic Nanocluster Assembled Thin Films [PDF]
, 2015 纳米粒子以及由它们构成的纳米结构材料由于具有尺寸效应、量子限域效应和界面效应，通常显示出许多不同于常规块体材料的磁、光、电等特性，在现代工业、国防和高新技术发展中充当着重要的角色。纳米粒子复合薄膜材料由于其兼有复合材料和纳米材料两者的优点，引起了越来越多的关注，并成为一个重要的前沿研究领域。 本论文的研究工作包括两个方面：1）利用纳米粒子束流复合薄膜沉积系统将由等离子体溅射惰性气体冷凝法制备的Fe65Co35合金纳米粒子原位封装到由常规磁控溅射制备的Ni0.5Zn0.5Fe2O4薄膜中 ...
王俊宝
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Performance of Pt-Based Catalysts for Dimethyl Ether Catalytic Combustion [PDF]
, 2017 利用二甲醚催化燃烧作为二甲醚重整制氢的热源可有效简化系统和提高效率，通过对比不同载体、不同Pt负载量以及不同助剂对Pt催化剂的性能影响，筛选出了最适合二甲醚低温起燃催化燃烧的催化剂.研究发现，HZSM-5型分子筛作为二甲醚催化燃烧载体具有较好的起燃特性，同时加入助剂Ce可以显著提高催化剂活性，起燃温度相对Pt/HZSM-5降低了58℃.Pt-Ce/HZSM-5催化剂的二甲醚起燃特性实验表明，在过量空气系数为1.1时具有最佳的起燃特性.对Pt-Ce/HZSM-5催化剂进行了稳定性实验 ...
伊立其 +4 more
core +1 more source
A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
wiley +1 more source
Fabrication and Properties of (W-Mo-Ni)N Composite Thin Film by Magnetron Sputtering [PDF]
, 2016 过渡金属氮化物由于其优异的综合性能，在现代工业中已被广泛的应用于机械加工，航天航空，微电子等领域。氮化钨和氮化钼薄膜具备较高的硬度和耐磨性，其热稳定性良好，耐腐蚀性强。在一般情况下，复合薄膜往往具有单一薄膜所不具备的综合性能，具有更强的实用性。在氮化物复合薄膜中，当薄膜中加入原子分数为15%-20%铜或镍等软质相元素时，薄膜的韧性更好硬度更高，因此，本文采用原子比为40:40:20的钼钨镍合金作为靶材，利用磁控溅射设备，制备具有高硬度、高耐磨性、综合性能良好的钼钨镍复合氮化膜 ...
杨周斌
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Dianci bileiqi, 2017 为了解决架空输电线路的雷击问题,研制了一种对建弧率有强烈抑制效果的爆炸强气流灭弧防雷间隙装置,使雷电流通过闪络路径流入大地,同时喷射出大量高压、高速电负性气体迅速熄灭工频续流电弧。建立了爆炸强气流耦合工频电弧的数学模型,运用有限元分析软件AUTODYN分别对爆炸气流场和耦合气流场进行仿真。进行了爆炸强气流截断工频续流电弧试验,并借助摄像机和示波器模拟记录输电线路雷击时灭弧防雷间隙中工频续流电弧的发展变化情况。试验结果表明,爆炸强气流灭弧防雷间隙能在0.4 ms内完全熄灭电弧并抑制重燃。
李世荣 +5 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang +5 more
wiley +1 more source
Review of analytical methods for in-duct spoiler flow noise [PDF]
, 2017 2014-2015 > Academic research: refereed > Publication in refereed journalVersion of ...
Mak, CM, Ou, D
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Governance of Climate‐Induced Relocation in the US: An Exploration of Institutional Complexity
Review of Policy Research, Volume 43, Issue 2, March 2026.ABSTRACT Climate change has and will continue to have a profound effect on both individuals and the communities in which they reside. A pressing question is how communities forced to confront climate‐induced catastrophe—including both rapid and slow‐onset hazards—undertake the decision of how and when to relocate, particularly given the multiple scales
Christopher S. Galik, Brad A. Johnson
wiley +1 more source
The study of brain function changes and related molecular mechanism of rat with chronic obstructive pulmonary disease [PDF]
, 2015 目的 慢性阻塞性肺病（chronicobstructivepulmonarydisease，COPD）以不完全可逆的气流受限和全身系统炎症为特征，可造成脑部供氧不足和神经炎症，导致脑细胞损伤。本研究利用分子生物学等方法探究COPD大鼠脑损伤的分子机制，并为快速诊断出COPD和临床治疗提供依据。 材料和方法 材料：雄性SD大鼠由厦门大学实验动物中心提供，体重230-280g，随机分成4组，健康对照组，吸烟组，脂多糖组，吸烟+脂多糖组，饲养在相同环境下，给予充足的水和食物。 研究方法 ...
严亚
core
A study on peracetic acid used for disinfection of clean laminar air flow ward
Huli yanjiu, 2004 为观察过氧乙酸用于空气层流洁净病房空气消毒的效果 ,用 1g/m3 、2 g/m3 的过氧乙酸对空气层流洁净病房进行空气消毒。结果 :2 g/m3 过氧乙酸自然挥发熏蒸法进行空气层流洁净病房的消毒效果符合要求。提示 2 g/m3 ...
李芳, 谭瑞珠, 林婷, 王晓珍
doaj