Results 91 to 100 of about 43,339 (292)

Symmetric Atom–Atom and Ion–Atom Processes in Stellar Atmospheres

Atoms, 2017
We present the results of the influence of two groups of collisional processes (atom–atom and ion–atom) on the optical and kinetic properties of weakly ionized stellar atmospheres layers.
Vladimir A. Srećković, Ljubinko M. Ignjatović, Milan S. Dimitrijević   +2 more
doaj   +1 more source

Characterization of stellar and sub-stellar atmospheres [PDF]

, 2016
In this work I aim characterize a number of (sub)-stellar companions. When studying isolated brown dwarfs, very low-mass stars, and directly imaged exoplanets with insignificant orbital motion, we have to rely on theoretical models to determine basic parameters such as mass, age, and consequently, effective temperature and surface gravity.
openaire   +1 more source

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Stellar model atmospheres with magnetic line blanketing

, 2004
Model atmospheres of A and B stars are computed taking into account magnetic line blanketing. These calculations are based on the new stellar model atmosphere code LLModels which implements direct treatment of the opacities due to the bound-bound ...
Barklem, Carpenter, Cramer, Cramer, D. Shulyak, Gustafsson, Hauck, Jamar, Kochukhov, Kodaira, Kupka, Kupka, Kupka, Kupka, Kurucz, Künzli, LeBlanc, Leckrone, Leckrone, Leckrone, Lemke, Maitzen, Molnar, Muthsam, Nielsen, North, O. Kochukhov, Piskunov, Relyea, S. Khan, Stehlé, Stepien, Stift, Takeda, Valyavin, Weiss, Wickramasinghe   +36 more
core   +1 more source

Suppression of lung adenocarcinoma migration through organelle alkalization by human lactoferrin – albumin fusion

FEBS Open Bio, EarlyView.
This paper reveals how human lactoferrin–albumin fusion (hLF‐HSA) potently suppresses lung adenocarcinoma cell migration. hLF‐HSA upregulates NHE7, leading to Golgi alkalization, disruption of the Golgi secretome, downregulation of MMP1, and reversal of EMT. These findings suggest a novel Golgi‐targeting strategy to suppress cancer cell migration.
Hana Nopia, Masahiro Kimura, Daisuke Kurimoto, Atsushi Sato   +3 more
wiley   +1 more source

New Theoretical Instability Regions, Period–Luminosity Relations, and Masses for Blue Large-amplitude Pulsators

The Astrophysical Journal
Blue large-amplitude pulsators (BLAPs) are a recently discovered group of hot pulsating stars whose evolutionary status remains uncertain. Their proposed progenitors are either ≃0.3 M _⊙ shell H-burning stars or ≃1.0 M _⊙ core He-burning stars, both ...
Susmita Das, Daniel Jadlovský, László Molnár   +2 more
doaj   +1 more source

YIPFα1A expression is regulated by multilayered molecular mechanisms

FEBS Open Bio, EarlyView.
YIPFα1A, a five‐pass Golgi protein, is regulated at multiple layers. (1) Rare‐codon enrichment drives translation‐coupled mRNA decay. (2) A proximal 3′‐UTR element stabilizes mRNA. (3) A distal 3′‐UTR element included by alternate poly(A) site usage represses translation, which can be overridden by the proximal 3′‐UTR element.
Tokio Takaji, Yurika Nakanishi, Nobuhiro Nakamura   +2 more
wiley   +1 more source

Impact of stellar spots on the high-resolution transmission spectra of a giant planet around a Sun-like star

Astronomy & Astrophysics
Context. Transmission spectroscopy has enabled the analysis of exoplanet atmospheres. However, a major challenge in this field is the “noise” from host stars, caused by stellar activity such as dark spots and bright plages.
Lucero Jennifer P., Demangeon O. D. S., Cristo E., Dethier W., Santos N. C.   +4 more
doaj   +1 more source

Physics of Stellar Atmospheres [PDF]

Nature, 1956
Physik der Sternatmospharen, mit besonderer Berucksichtigung der Sonne Zweite Auflage. Von Prof. A. Unsold. Pp. ix + 866. (Berlin: Springer-Verlag, 1955.) 168 D.M.
openaire   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source