Results 111 to 120 of about 110,517 (296)

Abundance Pattern Fitting with Bayesian Inference: Constraining First Stars’ Properties and Their Explosion Mechanism with Extremely Metal-poor Stars

open access: yesThe Astrophysical Journal
The abundance patterns of extremely metal-poor stars preserve a fossil record of the Universe’s earliest chemical enrichment by the supernova explosions from the evolution of first generation of stars, also referred to as Population III stars.
Ruizheng Jiang   +4 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

On the Determination of Stellar Mass and Binary Fraction of Open Clusters within 500 pc from the Sun

open access: yesThe Astrophysical Journal
We investigated the stellar mass function and the binary fraction of 114 nearby open clusters (OCs) using the high-precision photometric data from Gaia Data Release 3 (Gaia DR3).
Yueyue Jiang   +5 more
doaj   +1 more source

β‐TrCP overexpression enhances cisplatin sensitivity by depleting BRCA1

open access: yesMolecular Oncology, EarlyView.
Low levels of β‐TrCP (Panel A) allow the accumulation of BRCA1 and CtIP, which facilitate the repair of cisplatin‐induced DNA damage via homologous recombination (HR) and promote tumor cell survival. In contrast, high β‐TrCP expression (Panel B) leads to BRCA1 and CtIP degradation, impairing HR repair, resulting in persistent DNA damage and apoptosis ...
Rocío Jiménez‐Guerrero   +8 more
wiley   +1 more source

Big Galaxies and Big Black Holes: The Massive Ends of the Local Stellar and Black Hole Mass Functions and the Implications for Nanohertz Gravitational Waves

open access: yesThe Astrophysical Journal Letters
We construct the z = 0 galaxy stellar mass function (GSMF) by combining the GSMF at stellar masses M _* ≲ 10 ^11.3 M _⊙ from the census study of Leja et al.
Emily R. Liepold, Chung-Pei Ma
doaj   +1 more source

Ages, Distances, and the Initial Mass Functions of Stellar Clusters [PDF]

open access: yes, 2000
We provide a review of the current status of several topics on the ages, distances, and mass functions of open clusters, with a particular emphasis on illuminating the areas of uncertainty.
Jeffries, R. D.   +3 more
core   +2 more sources

Nicotinamide N‐methyltransferase promotes drug resistance in lung cancer, as revealed by nascent proteomic profiling

open access: yesMolecular Oncology, EarlyView.
AZD9291 has shown promise in targeted cancer therapy but is limited by resistance. In this study, we employed metabolic labeling and LC–MS/MS to profile time‐resolved nascent protein perturbations, allowing dynamic tracking of drug‐responsive proteins. We demonstrated that increased NNMT expression is associated with drug resistance, highlighting NNMT ...
Zhanwu Hou   +5 more
wiley   +1 more source

An Integrated Picture of Star Formation, Metallicity Evolution, and Galactic Stellar Mass Assembly

open access: yes, 2008
We present an integrated study of star formation and galactic stellar mass assembly from z=0.05-1.5 and galactic metallicity evolution from z=0.05-0.9 using a very large and highly spectroscopically complete sample selected by rest-frame NIR bolometric ...
A. J. Barger   +4 more
core   +1 more source

Adenosine‐to‐inosine editing of miR‐200b‐3p is associated with the progression of high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
A‐to‐I editing of miRNAs, particularly miR‐200b‐3p, contributes to HGSOC progression by enhancing cancer cell proliferation, migration and 3D growth. The edited form is linked to poorer patient survival and the identification of novel molecular targets.
Magdalena Niemira   +14 more
wiley   +1 more source

The Assembly of Supermassive Black Holes at z < 1 in Early-type Galaxies from Scaling Relations

open access: yesThe Astrophysical Journal
The assembly of supermassive black hole (SMBH) mass ( M _• ) and stellar mass ( M _* ) in galaxies can be studied via the redshift evolution of the M _• – M _* relation, but the ways in which selection bias and physical assembly channels affect this ...
D. Farrah   +16 more
doaj   +1 more source

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