Results 61 to 70 of about 776,968 (306)
Low-Frequency Noise Phenomena in Switched MOSFETs [PDF]
IEEE Journal of Solid-State Circuits, 2007 In small-area MOSFETs widely used in analog and RF circuit design, low-frequency (LF) noise behavior is increasingly dominated by single-electron effects. In this paper, we review the limitations of current compact noise models which do not model such single-electron effects.
van der Wel, Arnoud P. +7 more
openaire +2 more sources
Structural biology of ferritin nanocages
FEBS 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
Mixed Dead-Time Effect Suppression Strategy for Modular Multilevel Converters
CSEE Journal of Power and Energy SystemsDead time is necessary for the coupled power switches to prevent shoot-through, especially in the modular multilevel converters (MMCs) with a large number of power switches.
Zhi Geng, Minxiao Han
doaj +1 more source
IEEE Access, 2019 A constant on-time buck converter with internal inductor current synthesizer and output DC offset cancellation technique is proposed. A fully integrated inductor current synthesizer based on valley voltage detector is employed to avoid system instability
Quan Sun +4 more
doaj +1 more source
Calpain small subunit homodimerization is robust and calcium‐independent
FEBS Letters, EarlyView.Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy +4 more
wiley +1 more source
Elektrotehnìka ta ElektroenergetikaPurpose. Conduct a study of commutation processes and develop a methodology for determining the switching frequency of semiconductor elements in the converter for high-voltage electromechanical systems to minimize electrical losses during their ...
A.V. Synetskyi, I.M. Kotsur
doaj +1 more source
Nematic liquid crystal devices with sub-millisecond response time [PDF]
, 2014 Conventional nematic liquid crystal devices exhibit switching times that are in the order of several milliseconds. In this work we focus on two types of nematic liquid crystals that can overcome the limitations of conventional nematic liquid crystals and
Beeckman, Jeroen +5 more
core
Frequency dependent polarisation switching in h-ErMnO3 [PDF]
Applied Physics Letters, 2018 We report an electric-field poling study of the geometrically-driven improper ferroelectric h-ErMnO3. From a detailed dielectric analysis, we deduce the temperature and the frequency dependent range for which single-crystalline h-ErMnO3 exhibits purely intrinsic dielectric behaviour, i.e., free from the extrinsic so-called Maxwell-Wagner polarisations ...
Alexander Ruff +10 more
openaire +7 more sources
Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation
FEBS Letters, EarlyView.Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz +11 more
wiley +1 more source
Integrated Metric-Based Frequency Optimization for eVTOL PMSM Propulsion Systems
IEEE AccessRapid advancement of electric vertical take-off and landing (eVTOL) aircraft has increased the demand for electric propulsion systems that deliver high efficiency and high reliability. Among the available technologies, permanent magnet synchronous motors
Dong-Gyu Seong +2 more
doaj +1 more source