Results 61 to 70 of about 17,811 (141)
Background: Canine atopic dermatitis (cAD) is a common, chronic skin condition characterised by epidermal barrier dysfunction, immune dysregulation and cutaneous dysbiosis. While “emollient plus” formulations are widely used in human atopic dermatitis, their role in cAD remains underexplored. Hypothesis/Objectives: To evaluate the clinical efficacy and
Beatriz Fernandes +8 more
wiley +1 more source
提出了基于信号波形特征值和断路器机械动作时序性关系,反映断路器各部件机械特性的高压断路器机械状态诊断新思路。通过介绍根据该思路研制的高压断路器机械状态自动诊断辅助系统的系统原理、系统构成、运行效果以及进一步的扩展试验,表明基于特征值的诊断算法理论,具有反映弹簧操动机构机械状态的普遍意义。
钟家喜, 李保全, 李亚红
doaj
Fermi Surface Structure Revealed by Quantum Oscillations in Half‐Heusler Semimetal LuAuSn
ABSTRACT The Fermi surface structure in the half‐Heusler semimetallic compound LuAuSn was systematically investigated using quantum oscillation studies of high‐quality single crystals and first‐principles calculations. Clear bulk quantum oscillation signals were observed for multiple complementary physical properties, including magnetization, Hall ...
Yue Lu +12 more
wiley +1 more source
旨在研究变压器区外故障被切除后的暂态过程特性,为变压器差动保护的正确动作提供理论参考。首先从变压器恢复性涌流产生暂态过程进行分析;其次利用了MATLAB中的电力系统模块库(PSB)建立变压器区外故障时恢复性涌流产生的数字仿真模型,并对对恢复性涌流的影响因素和二次谐波进行仿真分析;最后根据仿真结果分析得到变压器恢复性涌流本身不会引起变压器差动保护误动,但是由于变压器各侧的电流互感器暂态特性不一致形成的差流,可能导致差动保护误动的结论。
褚晓锐
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
房室结内折返伴有前向传导延缓的旁观者副束所致宽QRS性心动过速
本文报道一例非常独特的复发性宽QRS心动过速。窦性心律时PR间期及QRS形态正常,快速心房起搏时出现左束支阻滞伴电轴左偏的预激图型。电生理检查证实其副束具有前向传导延缓及渐减性传导的特性,其心动过速符合房室结折返性心动过速特点。诱发性心动过速的第1个QRS形态正常,其后则为与快速心房起搏形态相同的宽QRS。在心动过速中心室期前刺激能夺获心室及心房而不造成心动过速的中断或节律重整。作者认为此例心动过速的机制最可能是房室结内折返伴有前向传导延缓的旁观者房室副束。文中详细地讨论了本例与结室副束(Mahaim ...
doaj
ABSTRACT The development of high‐performance and stable electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) plays a critical role in advancing clean energy technologies, including metal‐air batteries and hydrogen production through overall water splitting.
Chen‐Yu Cai +4 more
wiley +1 more source
广泛应用于高压换流站的干式空心电抗器承受频率含量丰富的谐波电流作用,产生严重的振动及噪声污染问题。干式空心电抗器通常为多层包封结构,文中以一台双层包封的电抗器为例,对其在不同谐波激励下的振动及噪声特性开展了研究,结合磁场力仿真和模态试验分析,明确了内外层包封之间的振动响应的关系,及整体声场的辐射特性。研究结果表明,空心电抗器在不同谐波电流激励下的振动分布受其模态特性主导,内外层包封的振动形态均呈现明显的波峰波谷分布,且与临近固有频率对应的模态振型相似;内外层包封在同一电流激励下的振动幅值和相位相近 ...
高璐 +5 more
doaj
为了研究断路器分、合闸过程的动态特性,笔者针对一台配永磁操动机构的真空断路器,基于虚拟样机技术建立了断路器的动力学模型,推导出模型动作过程所满足的运动方程及电磁方程,对真空断路器的分闸、合闸动态过程进行仿真分析与实验对比。仿真和实验结果表明,模型的动态特性满足断路器的技术参数及实验数据的要求,为研究断路器的优化设计和故障诊断提供了依据。
林莘, 曹辰, 李斌, 徐建源
doaj
ABSTRACT Skin wound injuries are often accompanied by bacterial infections and severe inflammation. Especially, M1‐type macrophages at the wound site can trigger a cascade of inflammatory responses, mediating a vicious cycle of inflammation. Meanwhile, hypoxia further exacerbates vascular damage and constriction in the wound microenvironment, thereby ...
Xianfeng Wang +6 more
wiley +1 more source

