Results 21 to 30 of about 2,353,120 (262)
Partition of Proteins in a Three‐Phase System [PDF]
European Journal of Biochemistry, 1974 A system consisting of three liquid phases has been used for partition of proteins. It is composed of water and three high‐molecular compounds: dextran, Ficoll and poly(ethyleneglycol) the latter partly converted into a derivative. All the three phases have a high water content, 71–79%, and dissolve proteins.
A, Hartman +2 more
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Energies, 2021 The article presents various concepts of three-phase power rectifiers with improved quality of converted electric power. This effect is obtained by modulating the currents in the DC output circuits of the rectifiers by means of power electronics ...
Tomasz Pajchrowski +2 more
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Three-Phase to Single-Phase Generation System Based on Doubly-Fed Induction Generator
Eletrônica de Potência, 2020 This paper presents a three-phase to singlephase six-leg converter for a wind energy conversion system based on Doubly-Fed Induction Generator (DFIG).
Filipe V. Rocha +4 more
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IEEE Access, 2022 With the increased installation of single-phase rooftop PV systems, in-house battery storage units, and high-power plug-in loads (i.e., EVs) at single-phase residential sites, it is prevalent that an increasing number of residential distribution systems ...
Syed A. Raza, Jin Jiang
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Hardware for classification of power quality problems in three phase system using Microcontroller
Cogent Engineering, 2017 Power quality is a growing concern as the number of electric sensitive loads is increasing day by day in all fields. Poor power quality is badly affecting sensitive loads causing instability, malfunctioning, loss of data and great loss of economy.
S. Asha Kiranmai, A. Jaya Laxmi
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Real-Time Three-Phase Dynamic Full ACPF Distribution System Model
Yanbu Journal of Engineering and Science, 2022 Power flow is the backbone for power system operation and control. Power system balancing, where supply of energy has to equal demand all time, is a very important operation constraint for electric power systems.
Sultan Hakmi Jr.
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Progressive Antithrombin: A Three-Phase System [PDF]
Blood, 1966 Abstract 1. Data are presented which demonstrate that progressive antithrombin activity results from the interaction of three factors: antithrombin, an antithrombin inhibitor, and a platelet factor. In plasma, the antithrombin is held inactive by combination with inhibitor so that no free antithrombic activity is present.
H H, Henstell, M, Kligerman
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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, Shirley E. Simon, F. H. Shaw
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Improving Inverter Output Current Controller Under Unbalanced Conditions by Using Virtual Impedance
IEEE Access, 2021 Nowadays, three-phase inverters have been commonly used in power systems, especially in renewable energy and motor drives applications. In many applications, the inverter has to generate balanced sinusoidal three-phase currents even though it is ...
Lukas Antonio Budiwicaksana +4 more
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Adaptive nonlinear control of single-phase to three-phase UPS system
MATEC Web of Conferences, 2014 This work deals with the problems of uninterruptible power supplies (UPS) based on the single-phase to three-phase converters built in two stages: an input bridge rectifier and an output three phase inverter.
Kissaoui M. +4 more
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