Results 61 to 70 of about 52,014 (259)

Nucleosynthesis [PDF]

open access: yesAnnual Review of Nuclear and Particle Science, 1984
This article provides a review of the present status of research in nucleosynthesis, with emphasis on problems of nucleosynthesis in stellar and supernova environments. The authors begin by surveying abundance patterns in the Sun, our galaxy and other galaxies, calling attention to the manner in which such data serve to guide and to restrict ...
openaire   +2 more sources

Indirect Measurements of n- and p-Induced Reactions of Astrophysical Interest on Oxygen Isotopes

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Observations of abundances and isotopic ratio determinations in stars yield powerful constraints on stellar models. In particular, the oxygen isotopic ratios are of particular interest because they are affected not only by nucleosynthesis but also by ...
M. L. Sergi   +12 more
doaj   +1 more source

Big bang nucleosynthesis [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1999
The concordance of standard big bang nucleosynthesis theory and the related observations of the light element isotopes (including some new higher \he4 abundances) will be reviewed. Implications of BBN on chemical evolution, dark matter and constraints on particle properties will be discussed.
openaire   +6 more sources

Recommendations for Monte Carlo nucleosynthesis sampling (Research Note)

open access: yes, 2012
Context: Recent reaction rate evaluations include reaction rate uncertainties that have been determined in a statistically meaningful manner. Furthermore, reaction rate probability density distributions have been determined and published in the form of ...
Longland, Richard
core   +1 more source

Big Bang nucleosynthesis revisited via Trojan Horse Method measurements [PDF]

open access: yes, 2014
Nuclear reaction rates are among the most important input for understanding the primordial nucleosynthesis and therefore for a quantitative description of the early Universe.
Bertulani, C. A.   +8 more
core   +4 more sources

Nucleosynthesis in the Early Galaxy [PDF]

open access: yesThe Astrophysical Journal, 2007
Recent observations of r-process-enriched metal-poor star abundances reveal a non-uniform abundance pattern for elements $Z\leq47$. Based on non-correlation trends between elemental abundances as a function of Eu-richness in a large sample of metal-poor stars, it is shown that the mixing of a consistent and robust light element primary process (LEPP ...
Marco Pignatari   +14 more
openaire   +4 more sources

Magellanic Clouds Cepheids: Thorium Abundances [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2018
The analysis of the high-resolution spectra of 31 Magellanic Clouds Cepheid variables enabled the identification of thorium lines. The abundances of thorium were found with spectrum synthesis method. The calculated thorium abundances exhibit correlations
Yeuncheol Jeong   +5 more
doaj   +1 more source

Light Elements in the Universe

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Due to their production sites, as well as to how they are processed and destroyed in stars, the light elements are excellent tools to investigate a number of crucial issues in modern astrophysics: from stellar structure and non-standard processes at work
Sofia Randich, Laura Magrini
doaj   +1 more source

Effect of nuclear structure on Type Ia supernova nucleosynthesis [PDF]

open access: yes, 2000
The relationship among nuclear structure, the weak processes in nuclei, and astrophysics becomes quite apparent in supernova explosion and nucleosynthesis studies.
Dean, D. J.
core   +2 more sources

Methyltransferase‐Like 3‐Mediated N6‐Methyladenosine Modification on RNAs: A Novel Perspective for the Pathogenesis and Treatment of Bone Diseases

open access: yesJournal of Cellular and Molecular Medicine, Volume 29, Issue 5, March 2025.
ABSTRACT Osteoarthritis, osteoporosis, and osteosarcoma are prevalent osseous pathologies associated with the aberrant functionality of chondrocytes, osteoclasts, and osteoblasts, respectively. These conditions frequently exhibit therapeutic resistance and possess a high mortality risk, thus representing substantial health threats.
Dongqiong Xiao   +3 more
wiley   +1 more source

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