Results 91 to 100 of about 261,450 (281)

An efficient method for solving the optimal sitting and sizing problem of capacitor banks based on cuckoo search algorithm

Ain Shams Engineering Journal, 2018
In this paper, a new approach to determine the optimal location and sizing of capacitor is being analyzed and the objective function is formulated to minimize power losses and voltage profile of the system subjected to equality and inequality constraints.
K.R. Devabalaji, T. Yuvaraj, K. Ravi
doaj   +1 more source

Reliability evaluation of power system considering voltage stability and continuation power flow [PDF]

, 2007
This article describes the methodology for evaluation of the reliability of an composite electrical power system considering voltage stability and continuation power flow, which takes into account the peak load and steady state stability limit.
Bansal, R. C., Saket, R. K., Singh, Gurmit   +2 more
core   +1 more source

Current-voltage characteristic and stability in resonant-tunneling n-doped semiconductor superlattices

, 1997
We review the occurrence of electric-field domains in doped superlattices within a discrete drift model. A complete analysis of the construction and stability of stationary field profiles having two domains is carried out.
%L. Esaki, A. A. Ignatov, A. D. Martin, A. N. Korotkov, A. N. Korotkov, A. Wacker, A. Wacker, A. Wacker, A. Wacker, B. Laikhtman, D. Dellwo, D. Miller, F. J. Higuera, F. Prengel, F. Prengel, G. Iooss, H. T. Grahn, H. T. Grahn, J. Kastrup, J. Kastrup, J. Kastrup, K. K. Choi, L. L. Bonilla, L. L. Bonilla, L. L. Bonilla, L. L. Bonilla, M. Kindelan, M. Moscoso, M. P. Shaw, O. M. Bulashenko, P. Guéret, S. H. Kwok, S. H. Kwok, S.-H. Kwok, Y. Kawamura   +34 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Voltage Stability Index Calculation by Hybrid State Estimation Based on Multi Objective Optimal Phasor Measurement Unit Placement

Energies, 2019
Operation of a power system close to the voltage stability limit due to increasing of load demand and limited power sources may result in disastrous economic loss with voltage collapse of the entire power system.
Yoshiaki Matsukawa, Masayuki Watanabe, Noor Izzri Abdul Wahab, Mohammad Lutfi Othman   +3 more
doaj   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Assessment of the voltage stability of the power system using stability indices and artificial neural network

Science and Technology for Energy Transition
Voltage Stability Indicators (VSI) play a significant role in determining the voltage stability of the power system. In order to forecast the voltage instability of the system using voltage stability indicators, this paper presents an implementation of ...
Gupta Santosh Kumar, Mallik Sanjeev Kumar, Yadav Lokesh Kumar, Tripathi Jayant Mani, Ranjan Ashish, Sahu Pankaj, Rahman Md Atiqur, Kesh Rishi, Singh Vishnu   +8 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Stability Margin Index of the Receiving-End Power System Based on the Whole Process Simulation

IEEE Access
With the rapid development of the Chinese power grid, its dynamic behavior becomes increasingly complex. How to prevent voltage instability and voltage collapse at the receiving-end system has become an urgent problem at present.
Li Huang
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source