Results 11 to 20 of about 235 (135)

Incubation of Horseradish Peroxidase near 50 Hz AC Equipment Promotes Its Disaggregation and Enzymatic Activity [PDF]

open access: yesMicromachines
Low-frequency electromagnetic fields, induced by alternating current (AC)-based equipment such as transformers, are known to influence the physicochemical properties and function of enzymes, including their catalytic activity.
Yuri D. Ivanov   +14 more
doaj   +4 more sources

A Three-phase Power-factor Correction Scheme Using an Autotransformer and Two Single-phase Buck Rectifiers [PDF]

open access: yesEletrônica de Potência, 2015
This paper presents a three-phase unidirectional rectifier with power-factor correction (PFC) using two modified single-phase Buck rectifiers in continuous conduction mode (CCM).
Geovane Duarte Pinheiro   +3 more
doaj   +2 more sources

Increasing by electrophysical methods of fruit and vegetable juice production [PDF]

open access: yesE3S Web of Conferences, 2023
The article represents the results of research on the increase of fruits and vegetables juice yield by electrophysical methods are presented. Apples from fruits, apricots, plums and carrots from vegetables, Suggestions and recommendations have been made ...
Kurbonov J.M.   +2 more
doaj   +3 more sources

Design and Simulation of an Autotransformer‐Based 18‐Pulse AC‐DC Converter for Enhanced Power Quality in Vector‐Controlled Asynchronous Motor Drives

open access: yesEnergy Science & Engineering
Reducing harmonics in alternating current (AC) input and ripples in direct current (DC) output enhances power quality, achievable through multi‐pulse converters (MPCs).
Mohammad Yousefzadeh   +4 more
doaj   +2 more sources

Multi-state and Interleaved Converters With Passive Impedances for Current Sharing [PDF]

open access: yesEletrônica de Potência, 2014
This paper presents multilevel switching cells that allow the generation of high-power nonisolated dc-dc, ac-dc, dc-ac, and ac- ac converters. The cells are classified in two groups: multi-state switching cells (MSSC) based on autotransformer and ...
René P. T. Bascopé   +3 more
doaj   +3 more sources

A New Hybrid Fault Identification Method Based on Multiterminals Synchronous Measure Information for All Parallel at Traction Power Supply System [PDF]

open access: yesEnergies, 2018
The all parallel autotransformer (AT) traction power supply system (TPSS) including several subsections is widely used for high-speed railways. Unfortunately, any fault of catenary and negative feeder will cause all subsections power interruption in the ...
Shuai Wang   +4 more
doaj   +2 more sources

A Novel Ground Fault Identification Method for 2 × 5 kV Railway Power Supply Systems [PDF]

open access: yesEnergies, 2015
The location of ground faults in railway electric lines in 2 × 5 kV railway power supply systems is a difficult task. In both 1 × 25 kV and transmission power systems it is common practice to use distance protection relays to clear ground faults and ...
Jesus Serrano   +3 more
doaj   +3 more sources

An experimental stand for researching the properties of spent fuel assembly dry storage

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2023
The paper analyzes the modern methods of storing spent nuclear fuel and its processing, taking into account the finding of fuel in spent fuel assemblies.
Олександр Вікторович Корольов   +3 more
doaj   +5 more sources

Surface and intradermal temperature responses of adults to ambient heat stress with and without cooling. [PDF]

open access: yesPhysiol Rep
Abstract Accurate measurement of skin temperature is crucial to understanding responses to heat. We tested the hypothesis that intradermal temperature would differ from skin surface temperature during ambient heating with and without fan and water spray (24°C).
McKenna ZJ   +5 more
europepmc   +2 more sources

Antimicrobial Functionalization of Composite Nanofibrous Yarns as Surgical Sutures. [PDF]

open access: yesMacromol Biosci
This study presents the fabrication of drug‐loaded nanofibrous yarns using alternating current electrospinning. Incorporating chlorhexidine into a polycaprolactone envelope around a polyamide 6 core, the yarns offer extended antimicrobial release and promote cell adhesion.
Hedvičáková V   +11 more
europepmc   +2 more sources

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