Results 101 to 110 of about 2,963,400 (288)

Generalized symmetrical components for periodic non-sinusoidal three-phase signals [PDF]

open access: yes, 2006
This paper deals with the generalization of the symmetrical components technique to periodic non-sinusoidal three-phase currents and voltages. The generalization of the concept of symmetrical components is discussed together with their derivation in both
Tenti, P.   +13 more
core   +1 more source

RNA Sequencing Resolves Cryptic Pathogenic Variants in Mitochondrial Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Mitochondrial diseases are the most common inherited metabolic disorders, characterized by pronounced clinical and genetic heterogeneity that complicates molecular diagnosis. Although DNA‐based sequencing approaches have become standard in genetic testing, up to half of patients remain without a definitive diagnosis.
Zhimei Liu   +21 more
wiley   +1 more source

Predictive Ability of Plasma p‐tau217 for β‐Amyloid Status: A Prospective Multicenter Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Plasma tau phosphorylated at threonine 217 (p‐tau217) measured with fully automated platforms has shown high accuracy for Alzheimer's disease (AD) diagnosis, but real‐world multicenter data remain limited. We aimed to validate the diagnostic performance of p‐tau217 for identifying AD pathology in a real‐world multicenter cohort ...
Miquel Massons   +33 more
wiley   +1 more source

The symmetrical components and their applications [PDF]

open access: yes, 1973
The solution of unbalanced electrical circuits has been found to be most practical by the method of Symmetrical Components. It is very powerful analytical tool and is based on sound theory.
Sirichoomsang, Viboon
core  

On-line determination of Symmetrical Components by Sampling

open access: yes, 2008
Symmetrical components of currents and voltages are used for the performance analysis of three-phase power systems (positive-sequence component) and for protection.
Lobos, T, Eichhorn, K F
core   +1 more source

EMT-Based Sequence Analysis of a Converter-Dominated Microgrid Under Fault and Load Disturbances: Case Study of the NELHA Microgrid

open access: yesIEEE Access
Converter-dominated microgrids exhibit dynamic behaviors during faults and disturbances that differ fundamentally from those of synchronous-machine–dominated systems.
Adewale Adegboyega   +2 more
doaj   +1 more source

White Matter Hyperintensity Burden and Short‐Interval Change Associated With Sleep Apnoea in the UK Biobank

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng   +4 more
wiley   +1 more source

An Invertible Extended Sequence Transform for Untransposed Three-Phase Overhead Lines

open access: yesEnergies
The classical Fortescue symmetrical-component transform remains fully invertible as a similarity transform when the complete sequence-domain matrix is retained.
Jozef Bendík, Matej Cenký
doaj   +1 more source

Memory and Resting‐State Connectivity in Acute Transient Global Amnesia: A Case–Control fMRI Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Transient global amnesia (TGA) is a striking model of isolated amnesia. While hippocampal lesions are well described, the network‐level mechanisms and the precise neuropsychological profile remain debated. Our objective was thus to characterize functional and neuropsychological correlates of acute TGA and their ...
Elias El Otmani   +10 more
wiley   +1 more source

Estimation of symmetrical components and their orthogonal components under unknown frequencies and unknown biases

open access: yes, 2017
An algorithm to estimate symmetrical components, orthogonal components and amplitudes of each sinusoidal component in three-phase power system signal under unknown frequencies and unknown biases is presented.
Rui Zhang, Hua Li, Zhaobi Chu, Bo Chen
core   +1 more source

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