Results 11 to 20 of about 271,802 (169)
为了探测复合绝缘子的内部界面缺陷,文中提出一种基于微波致热的检测方法。针对电力系统中的常用设备——复合绝缘子的典型缺陷,结合电磁波理论,分析了微波在不同介电常数材料中传播特性的差异。通过有限元仿真分析,获得了含酥朽缺陷复合绝缘子在交流电压下的发热特性,并对比了微波作用下酥朽老化绝缘子与正常复合绝缘子发热特性的差异。使用实际出现朽化缺陷的芯棒样品,测试了微波加热后表面温升的特性,分析了微波入射方向、处理时间、功率对发热的影响。仿真与试验结果验证了微波致热检测绝缘子内部缺陷的有效性 ...
刘辉 +5 more
doaj
Laser‐Driven Halide Exchange and High‐Resolution Multicolor Patterning of Perovskite Films
ABSTRACT Translating the excellent properties of metal halide perovskites (MHPs) into practical flexible optoelectronic devices requires high‐resolution multicolor patterning techniques that are compatible with post‐fabrication processing. However, such a capability has remained elusive.
Shu Yang +6 more
wiley +1 more source
利用微波效应,以水为溶剂提取川楝素.研究了微波功率、微波占空比、微波作用时间、溶剂用量等因素对川楝素提取率的影响.确定最佳的提取工艺条件为:微波功率300W,微波作用时间10min,固液比为1∶30,微波占空比50%.提供了一条以水为溶剂、微波为热源提取川楝素的绿色化学途径.
唐英 +6 more
doaj
The Microstructure Evolution and Mechanical Properties of (FeCoCrNi)100‐x(AlCu)x High‐Entropy Alloys
ABSTRACT This study systematically investigates the effects of AlCu addition on the microstructural evolution and mechanical properties of (FeCoCrNi)100‐x(AlCu)x (x = 0, 5, 10, 15, 20; at%) high‐entropy alloys (HEAs). The results reveal that the microstructure evolves from coarse equiaxed to refined equiaxed, dendritic, and ultimately dual‐phase ...
Shunfu Xie +7 more
wiley +1 more source
米糠中蛋白质含量丰富,蛋白的必需氨基酸组成也比较完整,是一种优良的蛋白资源,因其组成成分复杂,难于提取。为了更加有效地提取米糠谷蛋白,采用微波辅助Osborne法提取米糠谷蛋白,通过单因素试验研究微波功率、微波时间、微波温度对米糠谷蛋白提取率的影响,在此基础上采用正交试验确定最优提取条件,同时研究了微波处理对米糠谷蛋白结构和功能性质的影响。结果表明:在微波功率800 W、微波时间15 min、微波温度40 ℃的条件下,米糠谷蛋白提取率为73.1%。微波处理后,米糠谷蛋白的α-螺旋和β-转角向β-折叠转移,
肖志刚1,段庆松1,段玉敏2,朱旻鹏1,苏爽1,何东1,高育哲1XIAO Zhigang1, DUAN Qingsong1, DUAN Yumin2, ZHU Minpeng1, SU Shuang1, HE Dong1, GAO Yuzhe1
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ABSTRACT With the rapid growth demand for advanced integrated electronic systems, lightweight flexible electromagnetic interference (EMI) shielding films integrated with functional properties, such as excellent mechanical properties and self‐healing capability, are a research focus in high‐tech functional materials. Herein, a sandwich‐structured aramid
Dan Guo +9 more
wiley +1 more source
采用微波辐射Fenton试剂处理TNT废水,分别考察了TNT废水初始浓度、双氧水用量、微波辐射时间、微波功率和pH等因素对TNT废水处理效果的影响。结果表明,在微波功率为480 W、微波辐射时间为6 min、6%的双氧水用量为1.5 mL、FeSO4质量为0.07 g和pH=4的条件下,TNT废水COD去除率达到84.5%。单独微波辐射、单独Fenton试剂氧化、微波辐射Fenton试剂3种不同方法的对比实验表明,微波辐射Fenton试剂有明显的优越性。
关晓彤 +6 more
doaj
MXene‐Based Materials: Compositional Engineering for High‐Performance Microwave Absorption
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
近年来,我们在微波男性节育方面作了一些工作.为了进一步探索微波致畸的特异性,在1980年我们进行了微波对妊娠大白鼠致畸敏感期的测定.为使用微波时的安全提供参考。材料和方法一、本实验微波源为国产WL—200型微波理疗机.用2450MHz,100mW/cm2照射18分钟,被照射动物距辐射器15—20厘米。妊娠大鼠为全身照射,照射后平均肛温为41—42.5℃.微波辐射强度系用RCQ—1型微波漏场仪直接测得.
雍慧仪, 游育信, 钟英, 王方元
doaj
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

