Results 41 to 50 of about 661,289 (260)

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Photometric Characterization of Space Objects: From Classical BRDF Models to Data-Driven Prediction

Aerospace
The rapid proliferation of resident space objects has made space situational awareness critically dependent on accurate characterization of non-cooperative targets using photometric light curves.
Liu Yang, Can Xu, Yasheng Zhang
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Photometric Metallicity of Galactic RR Lyrae Stars in the Gaia DR3 Era

Galaxies
RR Lyrae stars are pulsating variables crucial for distance determination and galactic structure studies. Metallicities of fundamental-mode (RRab) RR Lyrae stars are commonly derived from photometry using empirical relations involving the Fourier ...
Mahiguhappriya Prakash, Susmita Das, Harinder P. Singh, Nitesh Kumar   +3 more
doaj   +1 more source

High accuracy & long timescale light curves

EPJ Web of Conferences, 2013
We present a theoretical analysis of the optical light curves (LCs) for short-period high-mass transiting extrasolar planet systems. Our method considers the primary transit, the secondary eclipse, and the overall phase shape of the LC between the ...
Hodgkin S., Mislis D.
doaj   +1 more source

Deep Attention-based Supernovae Classification of Multiband Light Curves

The Astronomical Journal, 2022
In astronomical surveys, such as the Zwicky Transient Facility, supernovae (SNe) are relatively uncommon objects compared to other classes of variable events. Along with this scarcity, the processing of multiband light curves is a challenging task due to
Óscar Pimentel, Pablo A. Estévez, Francisco Förster   +2 more
doaj   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

ATLAS OF LIGHT CURVES OF FAINT MIRA-TYPE STARS. STATISTICAL RELATIONS BETWEEN THE CHARACTERISTICS OF SMOOTHED PHASE LIGHT CURVES

Odessa Astronomical Publications, 2010
We propose a set of the photometric parameters which could be useful for the classiffication of the pulsating Mira-type stars and related objects and determination of the EAGB and TPAGB stages of the stellar evolution.
L. S. Kudashkina, I. L. Andronov
doaj   +1 more source

EROS light-curve database

Astronomy & Astrophysics
Context . The project called Expérience de Recherche d’Objets Sombres (EROS) carried out photometric surveys of dense stellar fields toward the Magellanic Clouds (LMC and SMC), the Galactic bulge and Galactic spiral arms in the period 1990-2003.
Afonso, C., Albert, J.-N., Ansari, R., Aubourg, E., Beaulieu, J.-P., Blaineau, T., Coutures, C., Derue, F., Glicenstein, J.-F., Goldman, B., Hamadache, C., Lasserre, T., Le Guillou, L., Lesquoy, E., Magneville, C., Mansoux, B., Moniez, M., Palanque-Delabrouille, N., Perdereau, O., Rich, J., Spiro, M., Tisserand, P.   +21 more
openaire   +2 more sources

Light curves analysis of AB Andromedae

Astronomische Nachrichten, 1986
AbstractThe new B and V light curves of the eclipsing variable AB And obtained during 1979 are analysed. Frequency Domain techniques is used and new geometric and photometric elements are given.
ROVITHISLIVANIOU, H, ROVITHIS, P
openaire   +2 more sources