Results 41 to 50 of about 78,969 (302)

Digital measurements of symmetrical components of a multiphase power system

open access: yes, 2004
The paper presents a digital algorithm method for measurements of symmetrical components of a multiphase power system, four phases. The models for symmetrical components of the multiphase system are first developed, and the algorithm of solution is ...
Soliman, S.A.   +2 more
core   +1 more source

Expanding the Scope: Modified Fortescue Theory for Frequency Unbalance Resolution in Control Strategies

open access: yesMathematics
To analyze unbalanced electrical systems, the mathematical technique “symmetrical components method” developed by Charles LeGeyt Fortescue in the early 20th century has been very successful in this field.
Karim Mansouri   +4 more
doaj   +1 more source

Study of Special Unbalanced Load Modes of New Double-Autotransformer of the Flexible Alternating Current Link [PDF]

open access: yesProblems of the Regional Energetics
The purpose of the work is study of special asymmetric modes of new three-phase autotrans-former device for flexible connection of alternative current power systems.
Bosneaga V., Suslov V.
doaj   +1 more source

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai   +4 more
wiley   +1 more source

Protection Coordination Method Using Symmetrical Components in Loop Distribution System

open access: yesEnergies, 2021
Power utilities worldwide commonly use the radial distribution system because of its advantages of being simple in structure and having relatively inexpensive installation costs.
Jung-Hun Lee   +4 more
doaj   +1 more source

Symmetric and Antisymmetric Components of Polar-Amplified Warming

open access: yesJournal of Climate, 2022
Abstract CO2-forced surface warming in general circulation models (GCMs) is initially polar amplified in the Arctic but not in the Antarctic—a largely hemispherically antisymmetric signal. Nevertheless, we show in CESM1 and 11 LongRunMIP GCMs that the hemispherically symmetric component of global-mean-normalized, zonal-mean warming () under 4 × CO2 ...
Hill, Spencer   +3 more
openaire   +3 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Impact of Apparent Reactance Injected by TCSR on Distance Relay in Presence Phase to Earth Fault

open access: yesAdvances in Electrical and Electronic Engineering, 2013
This research paper presents the impact study of apparent reactance injected by series Flexible AC Transmission System (FACTS) i.e. Thyristor Controlled Series Reactor (TCSR) on the measured impedance of a 400 kV single electrical transmission line in ...
Mohamed Zellagui, Abdelaziz Chaghi
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Synthesis of branch-guide directional couplers and filter prototypes [PDF]

open access: yes, 1968
The object of this thesis is the solution of the following problems using the theories of lumped and distributed network synthesis: (1) Synthesis of equally terminated, lumped and. distributed filters containing an even number of elements.
Lind, Larry Frederick
core  

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