Results 21 to 30 of about 2,372,430 (262)
Energies, 2022 Field approaches are employed to develop a mathematical model of a power network section. The facility consists of two electric power subsystems described with ordinary differential equations and presented as concentrated parameter systems connected with
Andriy Chaban +3 more
doaj +1 more source
Geometric Phase of Three-Level Systems in Interferometry [PDF]
Physical Review Letters, 2001 We present the first scheme for producing and measuring an Abelian geometric phase shift in a three-level system where states are invariant under a non-Abelian group. In contrast to existing experiments and proposals for experiments, based on U(1)-invariant states, our scheme geodesically evolves U(2)-invariant states in a four-dimensional SU(3)/U(2 ...
Sanders, Barry C. +3 more
openaire +3 more sources
Muscle: A Three Phase System [PDF]
The Journal of General Physiology, 1959 The partition of sulfate, Ca++, and Mg++ across the membrane of the sartorius muscle has been studied, and the effect of various concentrations of these ions in the Ringer solution on the cellular level of Na+, K+, and Cl- has been determined. The level of the three divalent ions in toad plasma and muscle in vivo has been assayed. Muscle
R, FRATER, S E, SIMON, F H, SHAW
openaire +5 more sources
District Heating System Optimisation: A Three-Phase Thermo-Hydraulic Linear Model
Energies, 2023 Investments in the development of the district heating system require a thorough analysis of the technical, economic, and legal aspects. Regarding the technical and economic context, a mathematical model of the district heating system has been proposed ...
Piotr Pałka +4 more
doaj +1 more source
Single-to-three phase induction motor sensorless drive system
Alexandria Engineering Journal, 2012 This paper presented a single to three-phase induction motor drive system to provide variable output voltage and frequency. The proposed drive system employs only six IGBT switches, which form the front-end rectifier and the output inverter for the one ...
Z.M.S. El-Barbary
doaj +1 more source
Highly efficient three-phase grid-connected parallel inverter system
Journal of Modern Power Systems and Clean Energy, 2018 In this paper, a new three-phase grid-connected inverter system is proposed. The proposed system includes two inverters. The main inverter, which operates at a low switching frequency, transfers active power to the grid.
Evren ISEN, Ahmet Faruk BAKAN
doaj +1 more source
Effective Harmonic Cancellation Technique for a Three-Phase Four-Wire System
Energies, 2022 An excess non-linear and unbalanced load application increases the power quality (PQ) problem by injecting harmonic current. The avoidance of neutral current control creates additional PQ problems due to excess circulating current in modern 3φ4W ...
Buddhadeva Sahoo +2 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
wiley +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider +15 more
wiley +1 more source
A PC-based three-phase system analyser
Fields, 2017 As the use of power electronics and inductive loads on electrical supplies increases, the requirement to monitor power system quality becomes an increasingly common practice.
doaj +2 more sources