Results 51 to 60 of about 110,601 (324)

Acousto-optic and opto-acoustic modulation in piezo-optomechanical circuits [PDF]

open access: yes, 2016
Acoustic wave devices provide a promising chip-scale platform for efficiently coupling radio frequency (RF) and optical fields. Here, we use an integrated piezo-optomechanical circuit platform that exploits both the piezoelectric and photoelastic ...
Balram, Krishna C.   +5 more
core   +3 more sources

Electrically driven optical interferometry with spins in silicon carbide [PDF]

open access: yes, 2019
Interfacing solid-state defect electron spins to other quantum systems is an ongoing challenge. The ground-state spin's weak coupling to its environment bestows excellent coherence properties, but also limits desired drive fields.
Abe, Hiroshi   +13 more
core   +2 more sources

Magnetic equivalent circuit model for unipolar hybrid excitation synchronous machine

open access: yesArchives of Electrical Engineering, 2015
Lately, there has been increased interest in hybrid excitation electrical machines. Hybrid excitation is a construction that combines permanent magnet excitation with wound field excitation.
Kupiec Emil, Przyborowski Włodzimierz
doaj   +1 more source

Generation of electrical energy using lead zirconate titanate (PZT-5A) piezoelectric material: Analytical, numerical and experimental verifications [PDF]

open access: yes, 2016
Energy harvesting is the process of attaining energy from the external sources and transforming it into usable electrical energy. An analytical model of piezoelectric energy harvester has been developed to determine the output voltage across an ...
Ahmad, Nasir   +5 more
core   +1 more source

High-Fidelity Model of Stand-Alone Diesel Electric Generator With Hybrid Turbine-Governor Configuration for Microgrid Studies

open access: yesIEEE Access, 2022
Diesel electric generators are an inherent part of remote hybrid microgrids found in remote regions of the world that provide primary frequency response (PFR) to restore system frequency during load or generation changes.
Chinmay Shah   +5 more
doaj   +1 more source

Disturbance Rejection-Based Optimal PID Controllers for New 6ISO AVR Systems

open access: yesFractal and Fractional, 2023
In the literature, different approaches that are employed in designing automatic voltage regulators (AVRs) usually model the AVR as a single-input-single-output system, where the input is the generator reference voltage, and the output is the generator ...
Muhyaddin Rawa   +7 more
doaj   +1 more source

Mathematical control of complex systems [PDF]

open access: yes, 2013
Copyright © 2013 ZidongWang et al.This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly ...
Hu, J, Karimi, HR, Shen, B, Wang, Z
core   +3 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Sequential Parts Analysis Using Local Optimization Method for Hybrid Excitation Flux Switching Generator

open access: yesMajlesi Journal of Electrical Engineering
The Hybrid Excitation Flux Switching Generator (HEFSG) has gained significant popularity in recent times owing to its relatively simple remarkably efficient topology. To optimize the performance of the generator, recent advancements and emerging patterns
Nur Afiqah Mostaman   +2 more
doaj   +1 more source

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