Results 41 to 50 of about 161,423 (202)

Improved astrophysical rate for the 18O(p,α)15N reaction by underground measurements

open access: yesPhysics Letters B, 2019
The 18O(p,α)15N reaction affects the synthesis of 15N, 18O and 19F isotopes, whose abundances can be used to probe the nucleosynthesis and mixing processes occurring deep inside asymptotic giant branch (AGB) stars.
C.G. Bruno   +37 more
doaj   +1 more source

Chemical evolution models with a new stellar nucleosynthesis [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1995
Numerical models for the chemical evolution of the Galaxy have been computed with the new stellar yields published by Maeder (1992). These metallicity dependent yields represent an important improvement in the chemical evolution of galaxies but there are still uncertainties in the stellar evolution which prevent completely satisfactory results.
Giovagnoli, A., Tosi, M.
openaire   +3 more sources

Biochar‐Based Materials for Electrochemical Energy Storage

open access: yesChemElectroChem, Volume 13, Issue 9, 5 May 2026.
Overview of biochar application in electrochemical energy storage. The global transition toward sustainable energy technologies is reshaping the design principles of electrochemical energy storage systems. Biochar, a tunable, carbon‐rich material derived from biomass, has emerged as a promising platform for next‐generation electrodes due to its ...
Valerio C. A. Ficca   +2 more
wiley   +1 more source

Stellar abundances and nucleosynthesis

open access: yes, 1974
Stellar abundances are essential parameters for many branches of astronomy. They are also particularly important as tests for theories of nucleosynthesis. Despite the encouraging results from band photometry, detailed spectroscopic analyses are still important in furthering knowledge of physical processes occurring in a variety of stellar objects. This
Ellis, R, Ellis, Richard S.
openaire   +2 more sources

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

open access: yesSystems Research and Behavioral Science, Volume 43, Issue 3, Page 1212-1228, May/June 2026.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

The stellar take on lithium

open access: yes, 2013
This is a non-exhaustive review of what we have learned from 10+ years of cluster studies with multi-object spectrographs at 10 m-class telescopes about what stars do with their birth-cloud lithium.
A.J. Korn, Korn, Andreas,
core   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Neutron capture reactions and stellar nucleosynthesis [PDF]

open access: yes, 1966
Neutron capture reactions and stellar nucleosynthesis - heavy element ...
Gibbons, J. H.
core  

THE SLOW DEATHS FROM CLIMATE CHANGE: A Planetary View from Papua New Guinea

open access: yesCultural Anthropology, Volume 41, Issue 1, Page 57-81, February 2026.
ABSTRACT How do we tell the stories of climate change? This essay explores the slow violence and death experienced by marginalized, racialized, indigenous bodies as climate change differentially impacts communities across the globe. Paying attention to locations beyond the spectacular events that have come to be associated with climate change, the ...
JAMON ALEX HALVAKSZ II
wiley   +1 more source

The Impact of Initial Composition on Massive Star Evolution and Nucleosynthesis

open access: yesThe Astrophysical Journal
We study the sensitivity of presupernova evolution and supernova nucleosynthesis yields of massive stars to variations of the initial composition. We use the solar abundances from Lodders, and compute two different sets of initial stellar compositions ...
Christopher West   +4 more
doaj   +1 more source

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