Results 81 to 90 of about 12,777,871 (251)

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Consensus-Based Load Frequency Control of a Multi-Area Power System

IEEE Access
The integration of renewable energy sources into modern power grids presents challenges for load frequency control (LFC) due to the increased system dynamics and uncertainties introduced by variable generation sources. Traditional LFC methods are limited
Ravi Patel, Chathura Wanigasekara, Akshya Swain, Abhisek Ukil   +3 more
doaj   +1 more source

Integrated aeroelastic and control analysis of wind turbine blades equipped with microtabs [PDF]

, 2015
This paper presents the results of an investigation into the performance of different controllers in active load control of wind turbine blades equipped with microtabs.
Macquart, Terence, Maheri, Alireza
core   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Optimal feedback path selection for interconnected power systems using load frequency control strategy

, 2020
The main goal of an interconnected power system is to transfer power from one area to another while the network frequency and tie‐line flow remain within the prescribed limits.
Md Alamgir Hossain, Chowdhury, A Hasib, A. Hasib Chowdhury, Md Mijanur Rahman, Rahman, Md Mijanur, Hossain, Md Alamgir   +5 more
core   +1 more source

An Adaptive Internal Model for Load Frequency Control Using Extreme Learning Machine [PDF]

, 2018
As an important part of a power system, a load frequency control has to be prepared with a better controller to ensure internal frequency stability. In this paper, an Internal Model Control (IMC) scheme for a Load Frequency Control (LFC) with an adaptive
Sasaki, Yutaka; Hiroshima University, Chongkai, He; Hiroshima University, Rehiara, Adelhard Beni; Hiroshima University, Zoka, Yoshifumi; Hiroshima University, Yorino, Naoto; Hiroshima University   +4 more
core   +1 more source

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

FEBS 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, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Improved Load Frequency Control Design for Interconnected Power Systems

Energies
Managing frequency stability in modern interconnected power systems is a critical challenge, particularly under continuous load variations and increasing system complexity.
Van Nguyen Ngoc Thanh, De Huynh Tan, Hoai Duong Minh, Van Van Huynh   +3 more
doaj   +1 more source

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

FEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos, Antonia Petropoulou, Alexandra Anastogianni, Angelina Bania, Vassilis Stamatakis, Argyris Alexiou, Chi‐Ping Day, Glenn Merlino, Katerina Grafanaki, Constantinos Stathopoulos   +9 more
wiley   +1 more source

HDE-CGWO-Based Optimal Load Frequency Control for Nonlinear Power Systems

Energies
In modern power-system load frequency control (LFC), proportional–integral–derivative (PID) controllers are widely used because of their simple structure and ease of implementation.
Yaya Li, Qing Hu, Xingyue Liu, Yu Jiang, Xuanqi Liao, Kaibo Shi   +5 more
doaj   +1 more source