Results 181 to 190 of about 5,514 (218)

Geologic evolution of the Moon studied through young lunar basaltic volcanism. [PDF]

Nat Commun
Chen J, Luo F, He H, Galien L, Oliveira BH.   +4 more
europepmc   +1 more source

The ²²Ne( α ,n)²⁵Mg reaction - state of the art, astrophysics, and perspectives. [PDF]

Eur Phys J A Hadron Nucl
Best A, Adsley P, Amberger R, Battino U, Chillery T, La Cognata M, deBoer RJ, Mercogliano D, Ota S, Rapagnani D, Sidhu RS, Spartà R, Tumino A, Wiescher M.   +13 more
europepmc   +1 more source

Putative promiscuous symbionts in deep-sea corals and crinoids may contribute to nitrogen cycling. [PDF]

Microbiome
Modolon F, N Garritano A, J Hill L, Duarte G, Bendia A, de Moura R, Pellizari V, Thomas T, Peixoto RS.   +8 more
europepmc   +1 more source

Multi-omics revealed the effects of rumen to blood path on early lactation performance in transition dairy cows. [PDF]

Microbiome
Tang G, Zhang C, Zhang X, Liu H, Suen G, Yao J, Zhang J.   +6 more
europepmc   +1 more source

The abundance distribution of stars with planets

, 2006
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The lithium abundance in stars

Space Science Reviews, 1991
The observations of Li abundances in pre-Main-Sequence, Main-Sequence (Population I and II), sub-giant, and giant stars are reviewed in order to show how Li can be used as a constraint on stellar hydrodynamics and in particular on particle transport processes in stars.
Georges Michaud, Paul Charbonneau
openaire   +1 more source

Oxygen and carbon abundances for the WO stars

Space Science Reviews, 1994
We present relative carbon and oxygen abundances derived via an optically thin recombination line analysis for five WO stars, and compare the derived abundances to recent evolutionary models. New recombination coefficients for O4+, O5+ and O6+ ions have allowed total oxygen abundances to be derived.
Robin L. Kingsburgh, M. J. Barlow, P. J. Storey   +2 more
openaire   +1 more source

Isotopic Abundances in RGB- and AGB-Stars

2006
Asymptotic Giant Branch stars contribute significantly to the chemical evolution of their host galaxies. All stars with a main-sequence mass = 8M ? will return eventually 30-80% of their mass to the interstellar medium. In parallel to the He-burning phase, which follows the original main sequence H-burning, AGB stars are known to produce heavy elements.
Käufl, Hans Ulrich, Aringer, Bernhard, Uttenthaler, Stefan, Hron, Josef   +3 more
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Sulphur Abundances in Metal-poor Stars

2008
We report on sulphur abundances in halo stars as derived from near-IR UVES spectra. The importance of removing telluric lines and residual CCD fringing patterns by using early B-type stars as calibrators is emphasized. Comparison of data from the weak λ8694.6 and the stronger λ9212.9, 9237.5 pair of S I lines provides important constraints on non-LTE ...
Nissen, Poul Erik; id_orcid 0000-0002-9098-2305, Akerman, C., Asplund, M., Fabbian, D., Pettini, M.   +4 more
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Oxygen Abundances in Solar-Type Stars

Astrophysics and Space Science, 1999
The absolute solar oxygen abundance, log e⨀ = 8.80 ± 0.06, has been determined from various oxygen abundance indicators in different solar atlases, and a new method is proposed to test collision rate coefficients for the NLTE model of O i. Using effective temperatures derived from Balmer lines, oxygen abundances from O i 7773 triplets in 83 solar-type ...
openaire   +1 more source