Results 51 to 60 of about 4,688 (310)
Axially Symmetric Post-Newtonian Stellar Systems
Revista Integración, 2010 We introduce a method to obtain self-consistent, axially symmetric disklike stellar models in the first post-Newtonian (1PN) approximation. By using in the field equations of the 1PN approximation a distribution function (DF) corresponding to a ...
Camilo Akímushkin +2 more
doaj
Cooperative Phenomena in Stellar Dynamics [PDF]
Monthly Notices of the Royal Astronomical Society, 1962 The dispersion relations for small amplitude waves in systems of gas and stars in relative motion are derived by methods developed for plasma physics, the interstellar gas being treated as a hydrodynamic fluid and the stars as a collisionless gas. The classical Jeans' minimum wavelength for instability in a gas is fundamentally reduced by relative ...
openaire +2 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
Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer
FEBS Letters, EarlyView.Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani +4 more
wiley +1 more source
Internal Kinematics and Structure of the Bulge Globular Cluster NGC 6569
The Astrophysical Journal, 2023 In the context of a project aimed at characterizing the properties of star clusters in the Galactic bulge, here we present the determination of the internal kinematics and structure of the massive globular cluster NGC 6569.
Cristina Pallanca +10 more
doaj +1 more source
Functional Integrals in Stellar Dynamics [PDF]
Symposium - International Astronomical Union, 1985 In the late 70s, the functional integral formulation equivalent to the Fokker-Planck equation was worked out (Graham). We apply this functional integral formulation to gravitationally interacting systems, whose dynamics may be analyzed by separating the forces operating on a particle into a mean field force and fluctuations due to random collisions at ...
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
The Astronomical JournalThis study presents a detailed chemical, kinematic, and orbital dynamic analysis of five metal-poor stars in the solar neighborhood: HD 2665, HD 5916, HD 122956, HD 189349, and HD 218857.
Gizay Yolalan +3 more
doaj +1 more source
Supermassive black hole mass in the massive elliptical galaxy M87 from integral-field stellar dynamics using OASIS and MUSE with adaptive optics: assessing systematic uncertainties [PDF]
, 2023 David A. Simon +2 more
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Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source