Results 91 to 100 of about 81,440 (198)
Gaoya dianqi, 2012 直流输电作为一项成熟、可靠的大容量、远距离输电技术,在中国跨省、区联网工程中发挥了重要作用。随着特高压±800 kV直流输电工程的顺利开展和实施,更高电压等级±1 000 kV直流输电技术的发展成为可能。直流互感器是供直流输电系统用电能计量、电量监测、电力系统控制与保护的重要装置,由于直流互感器的技术比交流互感器复杂,制造难度大,国内用量少,且事故率很高,所以一直没有得到推广,特高压±800 kV云南—广东和向家坝—上海直流工程中直流互感器均依赖于进口,中国未掌握核心技术。为推进特高压直流设备国产化进程,
费烨 +11 more
doaj
Advanced Healthcare Materials, EarlyView.This study investigates the M13 bacteriophage as a biomimetic nanovector capable of crossing in vitro models of the blood–brain barrier. By exploiting peculiar transcellular pathways, M13 avoids lysosomal degradation and preserves its structural integrity and functionality.
Silvia Vercellino +12 more
wiley +1 more source
Gaoya dianqi, 2012 结合一起800 kV罐式断路器液压机构渗油缺陷,认真分析机构组装工艺,并对机构零部件进行了检查测试,发现连接套设计公差偏大、现场安装方法不当是引发缺陷的根本原因。通过重新设计加工连接套、改进现场安装方法,彻底消除了机构存在的安全隐患,为后续800 kV罐式断路器安全运行奠定了基础。
李海波, 万荣兴
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Neutrophil‐Mimetic MRI Enables Ultra‐Early Detection of Vascular Inflammation After Stroke
Advanced Healthcare Materials, EarlyView.In this study, we developed neutrophil‐mimetic MRI probes that detect ultra‐early neuroinflammation following ischemic stroke by targeting E‐selectin. Within seconds of their injection, these microparticles mimic initial leukocyte adhesion to the activated cerebral endothelium.
Marion Isabelle Morvan +17 more
wiley +1 more source
基于先导发展模型的±800 kV直流输电线路的雷电屏蔽性能评估
Dianci bileiqi, 2019 基于先导发展模型,分析了±800 kV输电线路直线塔的雷电屏蔽性能,并研究了工作电压、杆塔高度、地形地貌和线路保护角的影响规律,结果表明,正极性工作电压使得最大绕击电流和绕击率增加,而负极性工作电压使得最大绕击电流和绕击率有所降低,但整体而言,考虑工作电压的线路绕击率高于不考虑工作电压的情况,前者约为后者的两倍;随着线路杆塔高度和保护角的增加,直流线路的雷电绕击跳闸率逐渐增大;大地平面朝着线路侧倾斜,会增强地面的屏蔽效应,使得雷电绕击线路的概率降低。考虑直流输电线路的实际参数,评估了四川省±800 ...
谢施君 +5 more
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Atomic Layer Deposition Processes: Versatile Platforms for Engineering ZnO‐Chitosan Biointerfaces
Advanced Healthcare Materials, EarlyView.Vapour phase metalation (VPM), multiplied pulsed vapour phase infiltration (MPI), and O2 plasma‑enhanced atomic layer deposition (PEALD) tailor Zn–chitosan (Zn‑CS) films. PEALD improves wettability and biocompatibility. MPI enhances semiconductor behavior. Antiseptic selectivity: VPM → E. coli; MPI → H. pylori.
Mabel Moreno +17 more
wiley +1 more source
Gaoya dianqi, 2011 高压断路器是变电站中仅次于变压器的高压开关设备,起着控制和保护的作用,为了保证750 kV超高压输变电工程安全运行,排除高压电气设备运行中可能存在的安全隐患,对黄河750 kV变电站采用的LW13-800罐式SF6断路器操动机构进行了介绍,分析了变电站断路器操动机构出现的频繁打压现象,并结合750 kV变电站现场运行经验提出了相应的解决办法和预防措施,对今后加强LW13-800罐式SF6断路器现场运行具有一定的借鉴意义。
闫群民, 马永翔, 王宏涛
doaj
800 kV Fast Circuit Breaker: Mechanical Coupling Modelling, Buffer Design and Development
High VoltageThe 800 kV fast circuit breaker (CB) used in ultra‐high voltage (UHV) converter transformer can reduce the total breaking time to 25 ms. It significantly improves the action speed and breaking capacity of the CB, with promising broad application ...
Enyuan Dong +6 more
doaj +1 more source
Advanced Healthcare Materials, EarlyView.Gellan gum fluid gel (FG) enables controlled ocular delivery of mesenchymal stromal cell (MSC)‐derived extracellular vesicles (EV). Its shear‐thinning, solid‐liquid‐solid rheology ensures prolonged ocular retention. Sustained MSC‐EV release (∼18% in 6 hrs) supports effective EV ocular delivery.
Seyedmohammad Moosavizadeh +7 more
wiley +1 more source
Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing
Advanced Materials, EarlyView.This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long +26 more
wiley +1 more source