Results 101 to 110 of about 409,343 (365)

A Plasmoid Model for Mass Loss from Stars on the Upper Red Giant Branch: The Mass-loss Rate is Controlled by the Number of Density Scale Heights in the Convection Zone

The Astrophysical Journal Letters
Recent asteroseismic determinations of Δ M , the integrated mass loss on the red giant branch (RGB), for fields stars show a trend of Δ M decreasing as metallicity increases .
J. MacDonald, D. J. Mullan
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Fine-tuned Supernova or Failed Explosion? Decoding the Origins of the G3425 Binary

The Astrophysical Journal Letters
A binary system (G3425) consisting of a massive unseen component and a red giant star on a nearly circular orbit was recently discovered. The formation of such a system is puzzling because orbital stability generally breaks down due to the large mass ...
Zsolt Regály, Viktória Fröhlich, József Vinkó   +2 more
doaj   +1 more source

Orbital Separation Amplification in Fragile Binaries with Evolved Components

, 2011
The secular stellar mass-loss causes an amplification of the orbital separation in fragile, common proper motion, binary systems with separations of the order of 1000 A.U.
Anderson, Anderson, Antonov, Burgasser, Chabrier, Chabrier, Chanamè, Chanamè, Charbonnel, D. Valls-Gabaud, Docobo, Dommanget, Eggen, Eggleton, Greenstein, Hadjidemetriou, Halbwachs, Hawley, Heggie, Heggie, Hernandez, Hills, Hurley, Hurley, Jiang, Johnston, K.B. Johnston, Kawka, Kroupa, Kruszewski, Kurucz, Longhitano, Lucy, Mathieu, Mowlavi, Oswalt, Paczynski, Pols, Poveda, Quinn, Rahoma, Reid, Reid, Robin, Schaller, Sesar, Shu, Sion, Stephens, T.D. Oswalt, Trimble, Trimble, Valls-Gabaud, Van Dessel, Verhulst, Wasserman, Wasserman, Weinberg, Willems, Wood, Zhao, Zinnecker, Öpik   +62 more
core   +2 more sources

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

MOCCA Survey Database I: Dissolution of tidally filling star clusters harbouring BH subsystems

, 2019
We investigate the dissolution process for dynamically evolving star clusters embedded in an external tidal field by exploring the MOCCA Survey Database I, with focus on the presence and evolution of a stellar-mass black hole subsystem. We argue that the
Askar, Abbas, Giersz, Mirek, Hypki, Arkadiusz, Leveque, Agostino, Spurzem, Rainer, Wang, Long   +5 more
core   +2 more sources

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

Molecular 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, Anna Skwarska, Karolina Chwialkowska, Agnieszka Ostrowska, Gabriela Sokolowska, Anna Zeller, Anna Erol, Andrzej Eljaszewicz, Bartosz Hanczaruk, Anna Michalska‐Falkowska, Agnieszka Tarasik, Joanna Reszec‐Gielazyn, Pawel Knapp, Marcin Moniuszko, Adam Kretowski   +14 more
wiley   +1 more source

Mass Ejection Driven by Sudden Energy Deposition in Stellar Envelopes

The Astrophysical Journal
A number of stellar astrophysical phenomena, such as tidal novae and planetary engulfment, involve sudden injection of subbinding energy in a thin layer within the star, leading to mass ejection of the stellar envelope.
Nicholas J. Corso, Dong Lai
doaj   +1 more source

COLOR–MAGNITUDE RELATIONS WITHIN GLOBULAR CLUSTER SYSTEMS OF GIANT ELLIPTICAL GALAXIES: THE EFFECTS OF GLOBULAR CLUSTER MASS LOSS AND THE STELLAR INITIAL MASS FUNCTION [PDF]

, 2013
Several recent studies have provided evidence for a “bottom-heavy” stellar initial mass function (IMF) in massive elliptical galaxies. Here we investigate the influence of the IMF shape on the recently discovered color–magnitude relation (CMR) among ...
P. Goudfrooij, J. Kruijssen
semanticscholar   +1 more source

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

Molecular Oncology, EarlyView.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak, Bodee Nutho, Worawat Wattanathana, Narumon Phaonakrop, Bunnatut Panasawatwong, Katharina Erlenbach‐Wuensch, Sittiruk Roytrakul, Regine Schneider‐Stock, Pithi Chanvorachote   +8 more
wiley   +1 more source