Results 91 to 100 of about 13,955 (228)

NEUTRINO EFFECTS IN NUCLEOSYNTHESIS [PDF]

open access: yesNeutrino Physics, 2001
The nucleosynthesis within a Type II supernova occurs in an intense neutrino flux. I discuss some of the effects associated with neutrino interactions, including direct synthesis in the neutrino process, the role of neutrinos in controlling the r-process path and in postprocessing r-process products, and neutrino oscillation connections.
openaire   +2 more sources

An Analytical Method for Quantification of Sn Isotope Variations in Geological Materials Using MC‐ICP‐MS

open access: yesGeostandards and Geoanalytical Research, Volume 48, Issue 4, Page 863-885, December 2024.
Key Points A method is described to obtain high precision Sn isotope ratios using the double spike technique in geological reference materials containing 0.03 to 7 μg g−1 of Sn. δ122/118Sn values are reported for sixteen geological RMs. Improved precision was achieved compared with previous studies by using low concentration Sn analyte.
Dipankar Pathak, Klaus Mezger
wiley   +1 more source

Neutrino-nucleus reactions and their role in supernova nucleosynthesis [PDF]

open access: yes
Neutrino reactions on nuclei play important roles for the dynamics of supernovae and their associated nucleosynthesis. This manuscript summarizes the current status in deriving the relevant cross sections for supernova neutrinos and discusses the ...
Sieverding, A.   +2 more
core   +1 more source

Detection of Inconsistencies in Isotope Ratios Certified in the Isotopic Primary Standards for Copper, Zinc and Nickel

open access: yesGeostandards and Geoanalytical Research, Volume 48, Issue 4, Page 795-805, December 2024.
Key Points Isotopic reference materials are rarely cross‐examined. An optimised regression model and MC‐ICP‐MS offer a cost‐effective way to assess the reliability of values assigned to multi‐isotope reference materials. A significant lack of consistency has been observed in the long‐standing isotopic reference materials for nickel and zinc. Calibrated
Juris Meija   +4 more
wiley   +1 more source

Uncertainties in AGB evolution and nucleosynthesis [PDF]

open access: yes, 2016
We summarise the evolution and nucleosynthesis in AGB and Super-AGB stars. We then examine the major sources of uncertainty, especially mass-loss.
Lattanzio, John   +1 more
core   +1 more source

The evolution and history of Vinca alkaloids: From the Big Bang to the treatment of pediatric acute leukemia

open access: yesPediatric Blood &Cancer, Volume 71, Issue 11, November 2024.
Abstract An attractive flower from the island of Madagascar has in part saved the lives of thousands of children with acute lymphoblastic leukemia (ALL). Random mutations and alterations to the genome led to the evolution of genes encoding enzymes, which would provide the periwinkle flower an arsenal of secondary metabolites to survive within the ...
Jeffrey W. Taub   +5 more
wiley   +1 more source

Structure effects of 20N in elemental abundance estimations during explosive nucleosynthesis [PDF]

open access: yesEPJ Web of Conferences
Most nuclei far from the valley of stability, and typically near the drip lines, exhibit exotic features that have challenged our current understanding of nuclear structure.
Barman Jinti, Chatterjee Rajdeep
doaj   +1 more source

Neutrinos and nucleosynthesis in supernova

open access: yesJournal of Physics: Conference Series, 2006
The type II supernova is considered as a candidate site for the production of heavy elements. The nucleosynthesis occurs in an intense neutrino flux, we calculate the electron fraction in this environment.
Solis, U.   +2 more
openaire   +2 more sources

Neutron capture reactions and stellar nucleosynthesis [PDF]

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

Python galactic chemical history tool for nucleosynthesis

open access: yes, 2019
<p>Python galactic chemical history tool for nucleosynthesis</p ...
West, Christopher   +1 more
core   +1 more source

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