Results 51 to 60 of about 18,902 (308)

Analytical methods for assessing paper degradation In transformers [PDF]

open access: yes, 2006
Power transformers are essential equipments for distributing electricity. However, maintenance of these equipments is necessary to ensure long working life and to avoid catastrophic incidents.
Christofidis, Stavros
core  

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Analysis and Mitigation of Conducted Common-Mode Emissions in Solid-State Transformer

open access: yesIEEE Open Journal of Power Electronics
Solid-state transformers are potential solutions for power conversion applications with multiple ports, enabling the linking of renewable energy sources and asynchronous systems.
Hafte H. Adhena   +4 more
doaj   +1 more source

THE SINGLE-PHASE TRANSFORMER AS A SOURSE OF CURRENT HARMONICS

open access: yesDynamics of Systems, Mechanisms and Machines, 2017
The aim of the paper is to calculate the maximum magnetic induction value of the transformer's core which provides a specified value of current distortion. To solve this problem, an experimental study was made on the dependence of the magnetic induction on Total Harmonic Distortion for current.
openaire   +1 more source

Single-phase vs. Three-phase High Power High Frequency Transformers [PDF]

open access: yes, 2010
This thesis proposes one comparison methodology for single and three-phase high power high frequency transformers in power conversion systems. The objective is to compare the volume of the transformers.
Xue, Jing
core  

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Design of Multi-Nanoparticles Technique for Enhancing Magnetic Characterization of Power Transformers Cores

open access: yesAdvances in Electrical and Electronic Engineering, 2018
The structure of magnetic materials is an essential parameter for specifying magnetic characterization of the transformer core. This paper presents enhancing magnetic characterization of transformer cores by using new nanotechnology techniques.
Ahmed Thabet   +2 more
doaj   +1 more source

High frequency link Uninterruptible Power Supply (UPS) system [PDF]

open access: yes, 2013
This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.The main aim of this thesis is to propose, design, simulate and build a new UPS system which can be used for compact applications.
Rasool, Emad Abdulrazzaq
core  

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Modeling and Characterization of Series Connected Hybrid Transformers for Low-Profile Power Converters

open access: yesIEEE Access, 2020
Compact and low profile power converters are the main business of today's power industry. A significant volume of a power converter is occupied by the power transformer.
M. Abu Bakar   +2 more
doaj   +1 more source

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