Results 101 to 110 of about 206,533 (326)

Accurate fundamental parameters of CoRoT asteroseismic targets: the solar-like stars HD 49933, HD 175726, HD 181420 and HD 181906

, 2009
The CoRoT satellite has provided high-quality light curves of several solar-like stars. Analysis of the light curves provides oscillation frequencies that make it possible to probe the interior of the stars.
Alcock, Andersen, Appourchaux, Bessell, Bruntt, Bruntt, Cenarro, Christensen-Dalsgaard, Clausen, Collet, Frankowski, Gillon, Grevesse, Gustafsson, H. Bruntt, Hauck, Heiter, Kjeldsen, Kovtyukh, Kovtyukh, Kupka, Makarov, Martell, Masana, Mayor, Michel, Mosser, Mosser, Nordström, North, North, Petrov, Pietrinferni, Ramírez, Rentzsch-Holm, Rogers, Solano, Stello, Valenti, van Leeuwen   +39 more
core   +3 more sources

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

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
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, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

LAMA: LAMOST Medium-Resolution Spectral Analysis Pipeline

The Astrophysical Journal Supplement Series
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) has obtained more than 23 million spectra, opening an unprecedented opportunity to study stellar physics, as well as the formation and evolution of our Milky Way.
Chun-qian Li, Jian-rong Shi, Hong-liang Yan, Zhong-rui Bai, Jiang-tao Wang, Ming-yi Ding   +5 more
doaj   +1 more source

Red Giants Search Method Based on Convolutional Neural Networks

The Astronomical Journal, 2023
Red giants play a crucial role in astronomical exploration. However, the current search for these stars heavily relies on spectrum analysis, making it a cumbersome process.
Hao Yuan, Meng Liu, Zechao Yang, Yude Bu, Zhenping Yi, Xiaoming Kong, Tianmin Wu, Ran Zhang   +7 more
doaj   +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

Data-driven Stellar Intrinsic Colors and Dust Reddenings for Spectrophotometric Data: From the Blue-edge Method to a Machine Learning Approach

The Astrophysical Journal
Intrinsic colors (ICs) of stars are essential for studies on both stellar physics and dust reddening. In this work, we developed an XGBoost model to predict ICs with the atmospheric parameters T _eff , ${\rm{log}}\,g$ , and [M/H].
He Zhao, Shu Wang, Biwei Jiang, Jun Li, Dongwei Fan, Yi Ren, Xiaoxiao Ma   +6 more
doaj   +1 more source

Fundamental parameters of some B-type stars using NOAO Indo-U.S. Library [PDF]

, 2022
A. Shokry, Mohamed I. Nouh, S. M. Saad, Islam Helmy   +3 more
openalex   +1 more source

Calibration of LAMOST Stellar Surface Gravities Using the Kepler Asteroseismic Data

, 2016
Asteroseismology is a powerful tool to precisely determine the evolutionary status and fundamental properties of stars. With the unprecedented precision and nearly continuous photometric data acquired by the NASA Kepler mission, parameters of more than ...
Cao, Z., Hou, Y., Li, Y., Liu, C., Luo, A., Wang, L., Wang, W., Wang, Y., Wu, Y., Zhang, Y., Zhao, G.   +10 more
core   +1 more source