Results 81 to 90 of about 127,143 (294)

Subjective and Objective Quality Evaluation Study of BPL-PLC Wired Medium

Elektronika ir Elektrotechnika, 2020
This paper presents results of research on the effectiveness of bi-directional voice transmission in a 6 kV mine cable network using BPL-PLC (Broadband over Power Line - Power Line Communication) technology. It concerns both emergency cable state (supply
Grzegorz Debita, Przemyslaw Falkowski-Gilski, Marcin Habrych, Bogdan Miedzinski, Bartosz Polnik, Jan Wandzio, Przemyslaw Jedlikowski   +6 more
doaj   +1 more source

Role of Liquid Composition in the Transient Liquid Assisted Growth of Superconducting YBa2Cu3O7‐δ Films

Advanced Materials, EarlyView.
The Y supersaturation in the [Ba‐Cu(I/II)‐O] transient liquid composition is the driving force toward YBCO nucleation and growth in TLAG. Tuning the initial (Ba:Cu) molar ratio in the ink composition determines the YBCO epitaxial nucleation through supersaturation control.
Lavinia Saltarelli, Diana García, Laia Soler, Elzbieta Pach, Kapil Gupta, Daniel Sanchez‐Rodriguez, Jordi Aguilar, Víctor Fuentes, Eduardo Solano, Cristian Mocuta, Jordi Farjas, Xavier Obradors, Teresa Puig   +12 more
wiley   +1 more source

Combined‐harmonics wireless power transfer system

IET Microwaves, Antennas & Propagation
A technique for wireless power transfer (WPT) efficiency improvement by a proper design of the excitation waveform is presented. This improvement is obtained on the one hand by a combined‐harmonics excitation, and on the other hand by exploiting multiple‐
Elham Karimi Marnani, Jalil Rashed‐Mohassel, Mahmoud Shahabadi   +2 more
doaj   +1 more source

Rotary Wireless Inductive Transmitter Powered by ZVS Resonant Convertor

Elektronika ir Elektrotechnika, 2019
In this work, an inductive wireless power transfer module powered by resonant converter is studied. The system consists of a zero voltage switching resonant converter and a rotary wireless power transmitter.
Dimitar D. Arnaudov, Nikolay D. Madzharov, Nikolay L. Hinov   +2 more
doaj   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Recent blackouts in US and continental Europe: is liberalisation to blame? [PDF]

, 2004
The paper starts with a detailed technical overview of recent blackouts in the US, Sweden/Denmark and Italy in order to analyse common threads and lessons to be learnt.
Bialek, Janusz
core   +1 more source

Alkaline Leaching: A Facile Surface Activation Strategy to Improve the Reactivity of Air Electrodes for Solid Oxide Fuel Cells

Advanced Materials, EarlyView.
This study shows that alkaline leaching of PrBa0.8Ca0.2Co2O5+δ under anodic bias selectively removes Ba and Ca, forming a cobalt‐rich and amorphous layer. The modified surface significantly boosts ORR activity, offering a simple and effective strategy to improve electrochemical device performance.
Yeongtaek Hong, Hyunseung Kim, Sang Won Lee, Yong Beom Kim, SungHyun Jeon, Sangwoo Kim, Hainan Sun, Jeongah Lee, Seongwoo Nam, Seungwoo Roh, Tae Ho Shin, WooChul Jung   +11 more
wiley   +1 more source

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

Advanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea, Jordan Santiago Martinez, M. Asunción Molina, Jaime Mazarío, Lucy Costley‐Wood, Christian Cerezo‐Navarrete, Carlo Marini, Eduardo Villalobos‐Portillo, Andrew M. Beale, Pascual Oña‐Burgos   +9 more
wiley   +1 more source

Transmission-Line Analysis of Epsilon-Near-Zero (ENZ)-Filled Narrow Channels [PDF]

, 2008
Following our recent interest in metamaterial-based devices supporting resonant tunneling, energy squeezing and supercoupling through narrow waveguide channels and bends, here we analyze the fundamental physical mechanisms behind this phenomenon using a ...
Andrea Alù, J. Brown, Mário G. Silveirinha, Nader Engheta, R. E. Collin, R. E. Collin   +5 more
core   +3 more sources

Investigation into the impacts of self-inductance and mutual inductance on saggy winding inductive coupling power transmission

IET Conference Proceedings
This paper investigates the effects of self-inductance and mutual inductance on saggy coil magnetic resonant inductive coupling power transmission (IPT). The simulation of the saggy coil is conducted using a specialist tool called IPTVisual to visualise the phenomenon of saggy winding in the system.
Mohd Norhakim Bin Hassan, Simon Watson, Cheng Zhang   +2 more
openaire   +2 more sources