Results 141 to 150 of about 39,906 (300)

Detection of Enhanced Germanium in a New Cool Extreme Helium Star A980: Insights and Implications

The Astrophysical Journal
A fine abundance analysis of a recently discovered hydrogen-deficient carbon (HdC) star, A980, is presented. Based on the observed high-resolution optical spectrum, we ascertain that A980 is a cool extreme helium (EHe) star and not an HdC star.
Ajay Kumar Saini, Gajendra Pandey
doaj   +1 more source

NON-STATIONARY HE-WEAK STAR HD182255?

Odessa Astronomical Publications, 2010
It is known that the chemical elements distribution on the surface of chemically peculiar (CP) stars are associated with the distribution of the magnetic field.
Yu. V. Glagolevskij, A. V. Shavrina, G. A. Chuntonov   +2 more
doaj   +1 more source

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

Molecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed, Kerstin Huebner, Katharina Erlenbach‐Wuensch, Chuanpit Hampel, Daniela Thalheim, Adriana Vial‐Roehe, Bodee Nutho, Susanne Merkel, Arndt Hartmann, Pithi Chanvorachote, Regine Schneider‐Stock   +10 more
wiley   +1 more source

Dual targeting of RET and SRC synergizes in RET fusion‐positive cancer cells

Molecular Oncology, EarlyView.
Despite the strong activity of selective RET tyrosine kinase inhibitors (TKIs), resistance of RET fusion‐positive (RET+) lung cancer and thyroid cancer frequently occurs and is mainly driven by RET‐independent bypass mechanisms. Son et al. show that SRC TKIs significantly inhibit PAK and AKT survival signaling and enhance the efficacy of RET TKIs in ...
Juhyeon Son, Lily L. Remsing Rix, Bin Fang, Eric A. Welsh, Nicole V. Bremer, Valentina Foglizzo, Paola Roa, Nickole Sigcha‐Coello, Yi Liao, Eric B. Haura, Alexander Drilon, John M. Koomen, Emiliano Cocco, Uwe Rix   +13 more
wiley   +1 more source

Magnetic Chemically Peculiar Stars with Unsteady Periods

, 2011
Photometrically and spectroscopically variable chemically peculiar (CP) stars are the optimum laboratories for testing the rotational evolution of main sequence stars. A vast majority of well-studied CP stars have quite steady rotational periods (e.g. SrCrEu star CQ UMa). However, there are several CP stars that exhibit apparent period variations.
Mikulasek, Zdenek, Krticka, Jiri, Janik, Jan, Zverko, Juraj, Ziznovsky, Jozef, Zverina, Pavel, Zejda, Miloslav   +6 more
openaire   +2 more sources

New generation model atmospheres for chemically peculiar stars

Contributions of the Astronomical Observatory Skalnaté Pleso, 2007
submitted to Contrib. Astron. Obs. Skalnate Pleso (Proceedings of the CP#Ap Workshop, Vienna, 2007, eds. J. Ziznovsky, J. Zverko, E. Pauntzen, M. Netopil)
Kochukhov, Oleg, Shulyak, Denis Victorovich   +1 more
openaire   +3 more sources

Strength through diversity: how cancers thrive when clones cooperate

Molecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken, Maartje Witsen, Emile E. Voest, Krijn K. Dijkstra   +3 more
wiley   +1 more source

SMSS J022423.27−573705.1: An Extremely Metal-poor Star with the Most Pronounced Weak r-process Signature

The Astrophysical Journal
We present the measurement of 26 elemental abundances of SMSS J022423.27−573705.1 (SMSS 0224–5737), an extremely metal-poor (EMP) star with a weak r -process signature.
Hiroko Okada, Wako Aoki, Nozomu Tominaga, Satoshi Honda   +3 more
doaj   +1 more source

Rotational periods of magnetic chemically peculiar stars

, 2009
Magnetic chemically peculiar (mCP) stars of the upper part of the main sequence usually exhibit strictly periodic variations of their light, spectrum and magnetic field. These changes can be well explained using the oblique rotator model of the rigidly rotating star with persistent photometric spots, uneven horizontal abundance of chemical elements and
Mikulasek, Zdenek, Szasz, Gabriel, Krticka, Jiri, Zverko, Juraj, Ziznovsky, Jozef, Zejda, Miloslav, Graf, Tomas   +6 more
openaire   +2 more sources

Perspectives in educating molecular pathologists on liquid biopsy: Toward integrative, equitable, and decentralized precision oncology

Molecular Oncology, EarlyView.
Liquid biopsy enables minimally invasive, real‐time molecular profiling through analysis of circulating biomarkers in biological fluids. This Perspective highlights the importance of training pathologists through integrative educational programs, such as the European Masters in Molecular Pathology, to ensure effective and equitable implementation of ...
Marius Ilié, Umberto Malapelle, Catherine Alix‐Panabières, Claus Lindbjerg Andersen, Sandra Chlebowski, Vivien Lake, Caroline Lacoux, Virginie Lespinet‐Fabre, Olivier Bordone, Simon Heeke, Christophe Bontoux, Ellen Heitzer, Klaus Pantel, Paul Hofman   +13 more
wiley   +1 more source