Results 41 to 50 of about 551,974 (297)

Optical Sideband Processing Approach for Highly Linear Phase-Modulation/Direct-Detection Microwave Photonics Link

open access: yesIEEE Photonics Journal, 2014
We propose an optical sideband processing approach for phase-modulation direct-detection microwave photonics link in this paper. With optical sideband processing, phase modulation signal is converted to intensity modulation signal for direct detection ...
Jian Li   +3 more
doaj   +1 more source

Three-Phase Four-Wire Inverter for Grid Emulator Under Wide Inductance Variation to Evaluate the Performance of Distributed Generator

open access: yesIEEE Open Journal of Industry Applications, 2023
This article presents a three-phase four-wire inverter to generate voltage sources under wide filter inductance variation. The voltage sources with distortion and unbalance are to emulate grid voltages.
Tsai-Fu Wu   +3 more
doaj   +1 more source

Low distortion automatic phase control circuit [PDF]

open access: yes, 1972
Circuit for generation and demodulation of quadrature double side band signals in frequency division multiplexing system is described. Circuit is designed to produce low distortion automatic phase control.
Hauge, G., Pederson, C. W.
core   +1 more source

Instabilities and Insulator-Metal transitions in Half-Doped Manganites induced by Magnetic-Field and Doping [PDF]

open access: yes, 2006
We discuss the phase diagram of the two-orbital model of half-doped manganites by calculating self-consistently the Jahn-Teller (JT) distortion patterns, charge, orbital and magnetic order at zero temperature. We analyse the instabilities of these phases
Cepas, O.   +2 more
core   +2 more sources

NKCC1: A key regulator of glioblastoma progression

open access: yesMolecular Oncology, EarlyView.
Glioblastoma (GBM) progression is driven by disrupted chloride cotransporter homeostasis. NKCC1 is highly expressed in stem‐like, astrocytic, and progenitor cells, correlating with earlier recurrence, while overall survival remains unaffected. NKCC1 serves as a prognostic marker and potential therapeutic target, linking chloride transporter imbalance ...
Anja Thomsen   +5 more
wiley   +1 more source

Systematic {\em ab initio} study of the phase diagram of epitaxially strained SrTiO$_3$

open access: yes, 2006
We use density-functional theory with the local-density approximation to study the structural and ferroelectric properties of SrTiO$_3$ under misfit strains. Both the antiferrodistortive (AFD) and ferroelectric (FE) instabilities are considered.
Guo, G. Y.   +2 more
core   +1 more source

An Efficient Phase-Locked Loop for Distorted Three-Phase Systems [PDF]

open access: yesEnergies, 2017
This paper proposed an efficient phase-locked loop (PLL) that features zero steady-state error of phase and frequency under voltage sag, phase jump, harmonics, DC offsets and step-and ramp-changed frequency. The PLL includes the sliding Goertzel discrete Fourier transform (SGDFT) filter-based fundamental positive sequence component separator (FPSCS ...
Yijia Cao   +4 more
openaire   +2 more sources

Why human connection is the true metric of research success

open access: yesFEBS Open Bio, EarlyView.
Human‐centred mentorship can be shaped by mentor attributes, actions, intrinsic drive and career ambition. Drawing on reflections across Singapore and France, as well as workshop insights from FEBS‐IUBMB ENABLE 2024, this article shows that human‐centred mentorship creates the conditions for sustainable growth, well‐being and retention in research ...
Timothy Lin Yun Tan   +3 more
wiley   +1 more source

Modeling and Analysis of High-Power Ti:sapphire Laser Amplifiers–A Review

open access: yesApplied Sciences, 2019
We have introduced several factors that can be useful for the modeling and analysis of high-power Ti:sapphire laser amplifiers. The amplification model includes the phase distortion effect caused by the atomic phase shift (APS) in gain medium and the ...
Jihoon Jeong   +4 more
doaj   +1 more source

Optimized laser turrets for minimum phase distortion [PDF]

open access: yes, 1980
An analysis and computer program which optimizes laser turret geometry to obtain minimum phase distortion is described. Phase distortion due to compressible, inviscid flow over small perturbation laser turrets in subsonic or supersonic flow is calculated.
Blaisdell, G. A.   +2 more
core   +1 more source

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