Results 91 to 100 of about 5,024 (304)

White Dwarf Central Stars [PDF]

Symposium - International Astronomical Union, 1993
Planetary nebula nuclei on lower luminosity, diagonal tracks in the HR Diagrams are degenerate dwarf stars close to their final radii. For several reasons, these stars have until recently been difficult to identify and study. With the advent of new techniques and technologies, both hydrogen–rich and hydrogen–poor atmospheric sequences have been found.
openaire   +1 more source

Exsolution process in white dwarf stars

Context. White dwarf stars are considered to be suitable cosmic laboratories for studying the physics of dense plasma. Furthermore, the use of white dwarf stars as cosmic clocks to date stellar populations and main sequence companions demands an ...
Santiago Torres, Camisassa, María E., Rebassa Mansergas, Alberto, Torres, Santiago, Rebassa-Mansergas, Alberto, Maria Camisassa, Denis A. Baiko, Torres Gil, Santiago, Alberto Rebassa-Mansergas, Camisassa, María Eugenia, Baiko, Denis A.   +10 more
core   +1 more source

Variant‐Specific Landscape of Mutual Exclusivity Among BRAF, EGFR, and KRAS Oncogenes Reveals Overlap With Functionally Antagonistic Mutant Pairs

International Journal of Cancer, EarlyView.
Mutual exclusivity and co‐occurrence of oncogenic mutations reflect functional antagonism or dependence and may inform therapeutic strategies. However, most studies overlook variant‐level patterns. In this comprehensive, cross‐cohort analysis of BRAF, KRAS, and EGFR mutation subtypes, the most significant mutual exclusivity pairs overlapped with ...
Freya Vaeyens, Jan‐Patrick Hetzel, Khaldoon Abdullah, Carolien Eggermont, Catharina Olsen, Marco Mernberger, Ken Maes, Jelle Vlaeminck, Rainer Claus, Dries Vanisterbecq, Frederik Hes, Martin Pichler, Philippe Giron, Oleg Timofeev, Maxim Noeparast   +14 more
wiley   +1 more source

GD1212: Probing deep into the interior of a pulsating white dwarf star

EPJ Web of Conferences, 2015
We present the first self-consistent seismic analysis of a white dwarf star, GD 1212, in the Kepler2 field. We precisely establish the fundamental parameters of the star using the forward method based on physically sound models.
Giammichele N., Fontaine G., Charpinet S., Brassard P., Greiss S.   +4 more
doaj   +1 more source

Evolution and Phylogenetics of the Javan Hawk‐Eagle Nisaetus bartelsi (Stresemann, 1924) Using Mitochondrial Data 爪哇鹰雕 Nisaetus bartelsi (Stresemann, 1924) 基于线粒体数据的演化与系统发育研究

Integrative Conservation, EarlyView.
This study reconstructs the phylogeny of the Javan Hawk‐Eagle (Nisaetus bartelsi) within the subfamily Aquilinae using Maximum Likelihood and Bayesian Inference algorithms on a blood sample and GenBank data. The analysis reveals that the sampled genus Nisaetus forms a monophyletic group. Furthermore, N. bartelsi occupies a sister‐taxon of N.
Almas Lathifatul Ula, Tuty Arisuryanti, Rury Eprilurahman, Dwi Sendi Priyono   +3 more
wiley   +1 more source

Predicting Major Depression Among Diverse Online Gamers: The Role of Internet Addiction and Spirituality

Journal of Addictions &Offender Counseling, EarlyView.
ABSTRACT This study analyzed whether religious or spiritual affiliation and therapy enrollment protect against symptoms meeting Major Depressive Disorder criteria beyond demographic, Internet addiction, and described therapy enrollment. Findings illustrated one risk factor and one protective factor associated with experiencing symptoms that meet Major ...
Lindsay A. Lundeen, John R. McCall
wiley   +1 more source

XLVIII. The density of white dwarf stars

, 1931
The density of the white dwarfs stars is reconsidered from the point of view of the theory of the polytropic gas spheres, and gives for the mean density of a white dwarf (under ideal conditions) the formula ρ=2.162×106×(M/⊙ ...
Chandrasekhar, S.
core   +1 more source

The Relevance of Apology to Reparations for Historical Injustice

Journal of Applied Philosophy, EarlyView.
ABSTRACT This article explains the centrality of apology to an adequate account of reparations. I look in depth at what goes on in apology. As I have previously argued, apology is an expressive action through which we seek to mark adequately the significance of our own wrongdoing. I claim that apology so understood is not merely ornamental.
Christopher Bennett
wiley   +1 more source

Thirty-two New Bright ZZ Ceti Stars from TESS: Adding Cycles 4 and 5

The Astrophysical Journal
Analyzing all 120 s and 20 s light curves obtained by the TESS satellite up to Sector 69—the end of the fifth year of observations—for all known white dwarfs and white dwarf candidates up to G = 17.5 mag, we report the discovery of 32 new pulsating DA ...
Alejandra D. Romero, S. O. Kepler, Gabriela Oliveira da Rosa, J. J. Hermes   +3 more
doaj   +1 more source

Humanism in the Age of Hyperreality: A Speculative Critique of AI Therapybots and the Neoliberal Commodification of Human Beings

The Journal of Humanistic Counseling, EarlyView.
ABSTRACT This article examines the future place of humanistic counseling, assuming the successful mass deployment of artificial intelligence therapy chatbots (AITCs). We systematically identify the limitations of AITCs through the lens of Jean Baudrillard's view on simulacra and hyperreality and identify five collective psychosocial consequences of ...
Brett. D. Wilkinson, Andrew M. Brown
wiley   +1 more source