Results 81 to 90 of about 8,510,179 (297)
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 +2 more
wiley +1 more source
The Astronomical JournalMassively multiplexed spectrographs will soon gather large statistical samples of stellar spectra. The accurate estimation of uncertainties on derived parameters, such as the line-of-sight velocity v _los , especially for spectra with low signal-to-noise
László Dobos +5 more
doaj +1 more source
Astronomy & AstrophysicsContext. The surface brightness–color relation (SBCR) links stellar color to angular diameter and is a key ingredient of geometric distance measurements on the first rung of the cosmic distance ladder.
Xiong Jianping +7 more
doaj +1 more source
Magnetic Fields and CoronÆ in Late-Type Stars
, 1993 In this paper we give an outline of a detailed study by Jordan and Montesinos (1991) and Montesinos & Jordan (1992) (JM and MJ hereafter respectively) on the relations between the surface magnetic fluxes B s f s , filling factors f s and coronal fields B c and Rossby numbers for a sample of late-type main-sequence stars. Some other relations, involving
Montesinos, B, Jordan, C
openaire +2 more sources
Modelling stem cell differentiation related processes—A practical overview for biologists
FEBS Letters, EarlyView.Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar +4 more
wiley +1 more source
Modelling dynamos in rapidly rotating late-type stars
There is growing observational evidence that magnetic activity in rapidly rotating late-type stars is very different from that found in the Sun. In particular, polar spots and other high-latitude features are often observed on rapid rotators.
Bushby PJ
core +5 more sources
3D NLTE sodium abundances in late-type stars
Astronomy & AstrophysicsContext. Neutral sodium is an important tracer of the Galactic chemical evolution, a powerful diagnostic of different stellar populations, and the subject of detailed studies of exoplanet atmospheres via transmission spectroscopy. Aims. This work aims to
Canocchi G. +4 more
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 +2 more
wiley +1 more source
Late B-type stars and their candidate companions resolved with
, 2003 We present the first results from a series of Chandra observations carried out with the aim to examine the origin of X-ray emission in main-sequence late B-type stars.
B. Stelzer +4 more
core +1 more source
Rotational Velocities of Late-Type Stars [PDF]
, 1997 A calibration based on the results of Gray has been used to determine projected rotational velocities for 133 bright stars with spectral types of F, G, or K, most of which appear in {The Bright Star Catalogue}. The vast majority have {v} sin {i} ≤q 10 km
Fekel, Francis C.
core +1 more source