Results 81 to 90 of about 320,868 (280)

BIPHASIC ASYNCHRONOUS GENERATOR WITH CONDENSER EXCITATION

open access: yesProblems of the Regional Energetics, 2009
In article two-winding asynchronous generator in biphasic execution with the capacitor excitation, executed on the basis of the asynchronous engine with a short-circuited rotor is considered.
Berzan V.P., Tirshu M., Birladean A.
doaj  

ЗАСТОСУВАННЯ ЗАХИСНОГО ПРИСТРОЮ В НЕЙТРАЛІ ВИСОКОВОЛЬТНОЇ ОБМОТКИ АВТОТРАНСФОРМАТОРА З МЕТОЮ ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ ОБМЕЖЕННЯ ОДНОФАЗНОГО СТРУМУ КОРОТКОГО ЗАМИКАННЯ

open access: yesElektrotehnìka ta Elektroenergetika, 2011
Проведено аналіз існуючих пристроїв обмеження однофазних струмів короткого замикання. Розглянуто розроблений пристрій обмеження однофазного струму короткого замикання в нейтралі високовольтної обмотки автотрансформатора.
N. V. Vyshnevsky, A.N. Andriyenko
doaj   +1 more source

Gluing Nekrasov partition functions

open access: yes, 2014
In this paper we summarise the localisation calculation of 5D super Yang-Mills on simply connected toric Sasaki-Einstein (SE) manifolds. We show how various aspects of the computation, including the equivariant index, the asymptotic behaviour and the ...
Qiu, Jian   +3 more
core   +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

Closed Strings in Misner Space: Cosmological Production of Winding Strings

open access: yes, 2004
Misner space, also known as the Lorentzian orbifold $R^{1,1}/boost$, is one of the simplest examples of a cosmological singularity in string theory. In this work, the study of weakly coupled closed strings on this space is pursued in several directions: (
Berkooz, M., Pioline, B., Rozali, M.
core   +2 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Digital Twin Modeling for the Analysis of Thermal and Mechanical Effects of Mutual Coupling in Power Transformer Windings

open access: yesIEEE Access
In this work, digital twins are proposed to analyze the thermal and mechanical effects of mutual coupling in power transformer windings. To achieve this, construction data from two transformers were used to create computational models in the Comsol ...
Jalberth F. Araujo   +3 more
doaj   +1 more source

Methodology for Asynchronous Motor Impedance Measurement by Using Higher Order Harmonics

open access: yesEnergies, 2020
The control methods of asynchronous motors have changed during past decades. In the past, asynchronous motors were connected to grid directly. Later, thyristors as switching element-based frequency converters for asynchronous motors have appeared. Today,
Karolis Dambrauskas   +4 more
doaj   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

Improved Measurement Method for Locating Winding Faults in On-Board Transformers in High-Speed Trains

open access: yesIEEE Access
Frequency response analysis (FRA) is a widely used fault diagnosis approach for transformer windings. However, its application to on-board transformers in high-speed trains faces challenges because the four groups of high-voltage (HV) windings are often ...
Zhenyu Wu   +5 more
doaj   +1 more source

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