Results 51 to 60 of about 214,349 (248)

A direct A.C. to A.C. regenerative frequency and voltage converter [PDF]

open access: yes, 1980
Includes bibliographical references.The reliable variable speed operation of an a. c. machine over a wide speed range is a problem that has received attention for some time.
Case, Michael James
core   +1 more source

Research on High Reliability Traction Converter IGBT Active Junction Temperature Control

open access: yes机车电传动, 2021
The application conditions of rail transit converter are relatively strict, which requires high reliability and service life of converter and IGBT devices.
Wenye LIU   +6 more
doaj  

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

Nomenclature Overview and Beat Frequency in the Family of AC/AC Modular Multilevel Cascade Converters (MMCC)

open access: yesIEEE Access
The family of modular multilevel cascade converter (MMCC) has gained significant attention owing to its modular configuration, scalability, and superior harmonic performance.
Mohammed Azharuddin Shamshuddin   +2 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

DC-DC Boost Converter with Constant Output Voltage for Grid Connected Photovoltaic Application System [PDF]

open access: yes, 2010
The main purpose of this paper is to introduce an approach to design a DC-DC boost converter with constant output voltage for grid connected photovoltaic application system.
Chan, Pui Weng
core  

Electromagnetic Transient Simulation Algorithm for Nonlinear Elements Based on Rosenbrock Numerical Integration Method

open access: yesIEEE Access
Traditional nonlinear elements of the electromagnetic transient simulation program (EMTP) use the numerical integration method, often employing the trapezoidal integration method as an implicit algorithm. However, when the number of nonlinear elements is
Jing Ye   +9 more
doaj   +1 more source

Simulation of the analogue interface for remote measurements

open access: yesСистемный анализ и прикладная информатика, 2019
This work is aimed at finding possibilities for increasing the accuracy of measurements and interfering analog interfaces for remote measurements using resistive strain gauges by introducing a new structural scheme, which is shown on the Fig. 1. It shows
L. V. Kuzmych   +2 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

App-Based Tool for Automatic Controller Parameters Assessment for Power Converters in Particle Accelerator Facilities

open access: yesIEEE Open Journal of Industry Applications
Regulation coefficients assessment in a particle accelerator power conversion system depends on the topology, the magnet and the desired transient response. The series/parallel combination of a generic power converter (a brick) to develop a larger one (e.
Sebastian O. Maestri   +2 more
doaj   +1 more source

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