Results 91 to 100 of about 3,177,228 (297)

Effects of mass loss on the evolution of massive stars. II - Critical mass loss rates

The Astrophysical Journal, 1979
A critical mass-loss rate is discussed which, in the absence of binary mass transfer or extremely high mass-loss rates in the red-giant stage, determines whether a star will become a stripped core resembling a Wolf-Rayet star. Stars losing mass at this rate undergo two stages of /sup 14/N enhancement, and result in models resembling first WN and later ...
D. S. P. Dearborn, J. B. Blake
openaire   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

Mass-loss Rate of Highly Evolved Stars in the Magellanic Clouds

The Astrophysical Journal Supplement Series
Asymptotic giant branch stars (AGBs) and red supergiant stars (RSGs) exhibit significant mass-loss phenomena and are considered important sources of interstellar dust.
Jing Wen, Ming Yang, Jian Gao, Bingqiu Chen, Yi Ren, Biwei Jiang   +5 more
doaj   +1 more source

Sulfate Corrosion Resistance and Microstructure Characteristics of Iron Tailings Concrete

Kuangchan zonghe liyong
This is an article in the field of ceramics and composites. Mechanical properties and durability of sodium sulfate solution corrosion of iron tailings concrete are developed.
Qing MIAO, Jian CHANG, Boyi SUN
doaj   +1 more source

The Coronal Structure of AB Doradus

, 2010
We perform a numerical simulation of the corona of the young, rapidly rotating K0 dwarf AB Doradus using a global MHD model. The model is driven by a surface map of the radial magnetic field constructed using Zeeman-Doppler Imaging.
Barnes, Cohen, Cohen, Cohen, Donati, Donati, G. A. J. Hussain, García-Alvarez, Guirado, Hussain, Hussain, J. J. Drake, Krishnamurthi, Kuerster, Luhman, López-Santiago, Maggio, Matranga, Mestel, O. Cohen, Pakull, Schatzmann, Schmitt, T. I. Gombosi, V. L. Kashyap, Vilhu, Wood, Wood, Zuckerman   +28 more
core   +1 more source

O-star mass-loss rates at low metallicity [PDF]

Astronomy & Astrophysics, 2012
Mass fluxes J are computed for the extragalactic O stars investigated by Tramper et al. (2011; TSKK). For one early-type O star, computed and observed rates agree within errors. However, for two late-type O stars, theoretical mass-loss rates underpredict observed rates by ~ 1.6 dex, far exceeding observational errors.
openaire   +2 more sources

Mass–loss rates of cool evolved stars in M 33 galaxy

Proceedings of the International Astronomical Union, 2020
AbstractWe have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M 33 (Triangulum). In this paper, we present the dust and gas mass-loss rates by the pulsating Asymptotic Giant Branch (AGB) stars and red supergiants (RSGs) across the stellar disc of M 33.
Atefeh Javadi, Jacco Th. van Loon
openaire   +2 more sources

CDK11 inhibition induces cytoplasmic p21WAF1 splice variant by p53 stabilisation and SF3B1 inactivation

Molecular Oncology, EarlyView.
CDK11 inhibition stabilises the tumour suppressor p53 and triggers the production of an alternative p21WAF1 splice variant p21L, through the inactivation of the spliceosomal protein SF3B1. Unlike the canonical p21WAF1 protein, p21L is localised in the cytoplasm and has reduced cell cycle‐blocking activity.
Radovan Krejcir, Lukasz Arcimowicz, Lucia Martinkova, Vaclav Hrabal, Filip Zavadil Kokas, Tomas Henek, Martina Kucerikova, Ondrej Bonczek, Pavlina Zatloukalova, Lenka Hernychova, Philip J. Coates, Borivoj Vojtesek, David P. Lane   +12 more
wiley   +1 more source

The impact of mass-loss on the evolution and pre-supernova properties of red supergiants [PDF]

, 2014
The post main-sequence evolution of massive stars is very sensitive to many parameters of the stellar models. Key parameters are the mixing processes, the metallicity, the mass-loss rate and the effect of a close companion.
Chomienne, V., Eggenberger, P., Ekström, S., Georgy, C., Granada, A., Groh, J., Levesque, E., Maeder, A., Massey, P., Meynet, G.   +9 more
core   +2 more sources

Class IIa HDACs forced degradation allows resensitization of oxaliplatin‐resistant FBXW7‐mutated colorectal cancer

Molecular Oncology, EarlyView.
HDAC4 is degraded by the E3 ligase FBXW7. In colorectal cancer, FBXW7 mutations prevent HDAC4 degradation, leading to oxaliplatin resistance. Forced degradation of HDAC4 using a PROTAC compound restores drug sensitivity by resetting the super‐enhancer landscape, reprogramming the epigenetic state of FBXW7‐mutated cells to resemble oxaliplatin ...
Vanessa Tolotto, Nicolò Gualandi, Ylenia Cortolezzis, Raffaella Picco, Monica Colitti, Francesca D'Este, Mariachiara Gani, Wayne W. Hancock, Giovanni Terrosu, Cristina Degrassi, Francesca Agostini, Claudio Brancolini, Luigi E. Xodo, Eros Di Giorgio   +13 more
wiley   +1 more source