Results 121 to 130 of about 9,884 (228)
Ecological Implications of Germination Temperature on Native and Invasive Rumex Spp.
Plant-Environment Interactions, Volume 6, Issue 2, April 2025.ABSTRACT Rumex alpinus L. (R. alpinus) is a non‐native invasive plant in Czech mountain regions, altering ecosystem structure and function in protected areas. Rumex obtusifolius L. (R. obtusifolius) is a native species and a problematic weed in Czech meadows, while Rumex longifolius DC. (R.
Michaela Jungová +5 more
wiley +1 more source
Ba Enrichment in Gaia MS+WD Binaries: Tracing s-process Element Production
The Astrophysical Journal LettersA large population of intermediate-separation binaries, consisting of a main-sequence (MS) star and a white dwarf (WD), recently emerged from Gaia’s third data release (DR3), posing challenges to current models of binary evolution. Here we examine the s -
Param Rekhi +5 more
doaj +1 more source
Blueprint for a Universal Theory of Learning to Read: The Combinatorial Model
Reading Research Quarterly, Volume 60, Issue 2, April/May/June 2025.The Reading Tree. Abstract In this essay, I outline some of the essential ingredients of a universal theory of reading acquisition, one that seeks to highlight commonalities while embracing the global diversity of languages, writing systems, and cultures.
David L. Share
wiley +1 more source
Dredge-Up in Asymptotic Giant Branch Stars [PDF]
Symposium - International Astronomical Union, 1999 The third dredge-up phenomenon in asymptotic giant branch stars, responsible for the formation of C stars, is discussed based on detailed evolutionary model calculations. The structural readjustment of the star as dredge-up proceeds is analyzed, and its consequences on dredge-up predictions discussed.
openaire +1 more source
Evolution of thermally pulsing asymptotic giant branch stars – II. Dust production at varying metallicity [PDF]
, 2013 We present the dust ejecta of the new stellar models for the Thermally Pulsing Asymptotic Giant Branch (TP-AGB) phase computed with the COLIBRI code. We use a formalism of dust growth coupled with a stationary wind for both M and C-stars. In the original
A. Nanni +3 more
semanticscholar +1 more source
Topographic Drag at the Core‐Mantle Interface
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.Abstract The length of day variations with periods from five to one hundred years are mainly due to core‐mantle interactions. Assuming a differential velocity between the core and the mantle, we investigate the pressure coupling on a core‐mantle boundary (CMB) interface with topography. Including rotation, buoyancy, and magnetic effects in local models
R. Monville, D. Cébron, D. Jault
wiley +1 more source
MULTIPLE SPIRAL BRANCHES ON LATE ASYMPTOTIC GIANT BRANCH STARS
The Astrophysical Journal, 2012 We present one-dimensional hydrodynamical models that suggest a new mechanism for generating spiral structures around evolved stars. In these models, the pulsation of the star initiates the mass outflow and generates shock waves from a static atmosphere.
Qian Wang, Lee Anne Willson
openaire +1 more source
Multiple Molecular Winds in Evolved Stars. I. A Survey of CO(2-1) and CO(3-2) Emission from 45 Nearby Asymptotic Giant Branch Stars [PDF]
, 1997 This paper describes observations of a new phenomenon in evolved mass-losing asymptotic giant branch (AGB) stars: the presence of two winds with different expansion velocities.
G. R. Knapp +3 more
semanticscholar +1 more source
An Interview With Peter Rousseeuw
International Statistical Review, Volume 93, Issue 1, Page 1-17, April 2025.Summary Peter J. Rousseeuw is a statistician known mainly for his work on robust statistics and cluster analysis. Among his creations are least trimmed squares regression, the minimum covariance determinant estimator, the partitioning around medoids clustering method and the silhouettes graphical display.
Mia Hubert
wiley +1 more source
Dynamical Models of Asymptotic-Giant-Branch Stars [PDF]
Symposium - International Astronomical Union, 1974 The dynamical behaviour of the envelopes of four asymptotic-giant-branch stars of composition (X, Z)=(0.68, 0.02) and luminosity log L/L⊙ = 3.41, 3.60, 3.85 and 4.14 has been studied. At log L/L⊙ = 3.41, the envelope pulsates in the first-overtone mode and exhibits properties similar to those of the Mira variables.
openaire +1 more source