Results 41 to 50 of about 42,381 (333)
Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley +1 more source
Acoustic oscillations in solar and stellar flaring loops [PDF]
, 2004 Evolution of a coronal loop in response to an impulsive energy release is numerically modelled. It is shown that the loop density evolution curves exhibit quasi-periodic perturbations with the periods given approximately by the ratio of the loop length ...
Arber, T. D. +4 more
core +3 more sources
FEBS Letters, EarlyView.This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley +1 more source
Accretion shock stability on a dynamically heated YSO atmosphere with radiative transfer
EPJ Web of Conferences, 2014 Theory and simulations predict Quasi-Periodic Oscillations of shocks which develop in magnetically driven accretion funnels connecting the stellar disc to the photosphere of Young Stellar Objects (YSO).
de Sá Lionel +6 more
doaj +1 more source
Tidal Resonance: A Factor Worth Considering in the Orbital Evolution of Heartbeat Stars
Universe, 2023 Heartbeat star systems have been reported to exhibit two distinct different orbital dynamic evolution processes: apsidal precession (e.g., KIC 4544587) and orbital decay (e.g., KIC 3766353).
Jian-Wen Ou +5 more
doaj +1 more source
Nuclear reactions in hot stellar matter and nuclear surface deformation
, 2006 Cross-sections for capture reactions of charged particles in hot stellar matter turn out be increased by the quadrupole surface oscillations, if the corresponding phonon energies are of the order of the star temperature.
C. E. Rolfs +10 more
core +1 more source
An Oscillator Model for Stellar Variability [PDF]
International Astronomical Union Colloquium, 1993 AbstractThe dependence of coupling constants in a coupled oscillator model is examined with simplified methods. The Lyapunov exponents are preliminary introduced for the model. The behaviors of oscillator model are examined in a parameter plane. So-called the Arnold’s tongues for phase-locking states are observed in fractal patterns.
T. Nakahara, Y. Tanaka
openaire +1 more source
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
Asteroseismic Investigation on KIC 10526294 to Probe Convective Core Overshoot Mixing
The Astrophysical Journal, 2023 In the overshoot mixing model with an exponentially decreasing diffusion coefficient, the initial value of the diffusion coefficient plays a crucial role.
Qian-Sheng Zhang +3 more
doaj +1 more source
Mode lifetimes of stellar oscillations [PDF]
Astronomy & Astrophysics, 2009 letter accepted for publication in A& ...
Chaplin, W. J. +4 more
openaire +2 more sources