Results 31 to 40 of about 240,730 (259)

A neural mass model of cross frequency coupling. [PDF]

PLoS ONE, 2017
Electrophysiological signals of cortical activity show a range of possible frequency and amplitude modulations, both within and across regions, collectively known as cross-frequency coupling.
Mojtaba Chehelcheraghi, Cees van Leeuwen, Erik Steur, Chie Nakatani   +3 more
doaj   +1 more source

Coupling Impedance Modeling Analysis of Grid-Connected Inverters Under Three-Phase Voltage Unbalance

Energies
Under the condition of asymmetric system voltage, grid-connected inverters exhibit obvious sequence impedance frequency coupling characteristics, which can easily lead to resonance and the misoperation of protection and control devices.
Yang Liu, Haidong Yu, Qihang Wu, Bin Wang, Lisheng Li, Wenbin Liu   +5 more
doaj   +1 more source

High-frequency Resonance Analysis and Impedance Reshaping Control of MMC-HVDC System Based on Frequency Coupling Impedance Model

Journal of Modern Power Systems and Clean Energy
In recent years, high-frequency resonance (HFR) events occurred in several modular multilevel converter based high-voltage direct current (MMC-HVDC) projects. The time delay of an MMC-HVDC system is the critical factor that induces HFR.
Juanjuan Wang, Wei Chen, Yuekun Liu, Chuang Fu, Yunming Ye, Junjie Feng   +5 more
doaj   +1 more source

Distinct mechanisms underlie electrical coupling resonance and its interaction with membrane potential resonance

Frontiers in Systems Biology, 2023
Neurons in oscillatory networks often exhibit membrane potential resonance, a peak impedance at a non-zero input frequency. In electrically coupled oscillatory networks, the coupling coefficient (the ratio of post- and prejunctional voltage responses ...
Xinping Li, Omar Itani, Dirk M. Bucher, Horacio G. Rotstein, Farzan Nadim   +4 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Analysis of frequency characteristics of three-coil magnetic coupling resonant wireless power transmission system

Gong-kuang zidonghua, 2018
An equivalent circuit model of three-coil magnetic coupling resonant wireless power transmission system was built, and formulas of system transmission power and transmission efficiency were deduced.
LI Xinheng, GONG Lijiao, FENG Li, SUN Xiangyu, LI Yang, LI Hui   +5 more
doaj   +1 more source

Evaluation of torque-dependent coupling characteristics and their influence on the system vibration characteristics

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2021
Coupling characteristics that depend on the applied torque and the influence of this torque dependency on the system response are investigated in this study.
Massimiliano RIGACCI, Ryuta SATO, Keiichi SHIRASE, Taichi SASAKI   +3 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

FEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino, Meijie Li, Cécile Fizames, Mattia Adamo, Laurence Lejay, Christian Dubos, Matthieu Platre, Antoine Martin   +7 more
wiley   +1 more source

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source