Results 51 to 60 of about 760,879 (293)

Heterotropic regulation and negative homotropic cooperativity

FEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea, Francesco Angelucci, Federica Arnesano, Gianmarco Pascarella, Patrizio Di Micco, Andrea Bellelli   +5 more
wiley   +1 more source

Mitigation of Ethiopian industry sector power quality problems using ultra-capacitor based dynamic voltage restorer

e-Prime: Advances in Electrical Engineering, Electronics and Energy
Nowadays, power quality issues; specifically, voltage sag, swell, harmonics, and interruptions have become significant challenges for customers in Ethiopia.
Beliyou Molla, Emiyamrew Minaye Molla, Abebe Wolie Yimam, Tefera Mekonnen Azerefegn   +3 more
doaj   +1 more source

A minimal cellulosome‐like system in Cellulosilyticum lentocellum

FEBS Open Bio, EarlyView.
Cellulose‐degrading bacteria typically use cellulosomes, large multi‐enzyme complexes on a scaffold protein. In Cellulosilyticum lentocellum, we characterise a far smaller arrangement, a single scaffold bound to one cellulase through a single cohesin‐dockerin interaction.
John Allan, Amias Alstrom‐Moore, Gary W Black   +2 more
wiley   +1 more source

Enhanced DVR Control System Based on the Harris Hawks Optimization Algorithm

IEEE Access, 2020
The dynamic voltage restorer's (DVR) transient, steady-state, and dynamic responses are essential requirements for protecting sensitive loads against upstream voltage disturbances via the DVR's ride-through capabilities.
Zeinab Elkady, Naser Abdel-Rahim, Ahmed A. Mansour, Fahmy M. Bendary   +3 more
doaj   +1 more source

Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle, Andreas Leha, Volker Limmroth, Wolfram Windisch, Maximilian Zimmermann   +4 more
wiley   +1 more source

Analisis Voltage Sag dan Voltage Swell Pada PLTS Roof-Top Off-Grid Yang Menggunakan Inverter 1 kWp [PDF]

, 2022
Masalah kualitas daya listrik banyak terjadi dalam kehidupan sehari-hari dan dapat mengakibatkan kerusakan pada peralatan listrik yang sensitif terhadap perubahan tegangan.
Dian, Dwi Putra
core   +1 more source

Enhancing grid-connected photovoltaic systems' power quality through a dynamic voltage restorer equipped with an innovative sliding mode and PR control system

e-Prime: Advances in Electrical Engineering, Electronics and Energy
This study focuses on enhancing power quality in on-grid photovoltaic (PV) schemes through an innovative dynamic voltage restorer (DVR) that integrates two control strategies with a multi-level inverter.
Negin Shahidi, Ebrahim Salary
doaj   +1 more source

MOGAD Is the Most Common Cause of Isolated Optic Neuritis in Children

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives The study aimed to characterize the clinical features, etiologies, and outcomes of isolated, first‐time pediatric ON in the post‐MOG‐IgG era. Methods This was a single‐center retrospective cohort study at Texas Children's Hospital of patients diagnosed with first‐time ON between 2018–2024, with follow‐up data collected through 2025.
Chaitanya Aduru, Akansha Chandrasekar, Kyla Blasingame, Jonathan Rosen, Jesse M. Levine, Karla Salazar, Madhuri Chilakapati, Rod Foroozan, Victoria Hardwick, Jonathan M. Yarimi, Nikita Shukla, Timothy E. Lotze, Kristen S. Fisher, Alexander J. Sandweiss   +13 more
wiley   +1 more source

Fault current limiting dynamic voltage restorer for power quality improvement in distribution system (case study: air force feeder)

Journal of Electrical Systems and Information Technology
Air force distribution feeder, or R1-G4, in Bahir Dar substation is affected by total harmonic distortion from nonlinear loads, voltage sag from short-circuit faults that occurred on the system, and voltage swell.
Yechale Amogne, Efrata Admas, Wondifraw Asmare Alemu   +2 more
doaj   +1 more source

A New Method of Voltage Sag and Swell Detection [PDF]

IEEE Transactions on Power Delivery, 2007
The fundamental voltage, current, and phase angle are required for a wide variety of power system applications. An algorithm that is capable of calculating or estimating these quantities in real time, in the presence of distorted waveforms, finds application in diverse areas of power systems.
Naidoo, R., Pillay, Pragasen
openaire   +2 more sources