Results 1 to 10 of about 43,170,865 (319)
Discovery of s-process enhanced stars in the LAMOST survey [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Here we present the discovery of 895 s-process-rich candidates from 454 180 giant stars observed by the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) using a data-driven approach.
Brodie J. Norfolk +9 more
semanticscholar +1 more source
Study of the Briquetting Process of Walnut Shells for Pyrolysis and Combustion
Applied Sciences, 2023 Walnut shells can be used as fuels in power plants directly or as biochars obtained by pyrolysis or torrefaction. They are an example of clean waste biomass which shows a low ash content and a high Net Calorific Value, making them excellent for energy ...
Rafael Font +5 more
doaj +1 more source
New s-process Mechanism in Rapidly Rotating Massive Population II Stars [PDF]
Astrophysical Journal, 2019 We report a new mechanism for the s-process in rotating massive metal-poor stars. Our models show that above a critical rotation speed, such stars evolve in a quasi-chemically homogeneous fashion, which gives rise to a prolific s-process.
P. Banerjee, A. Heger, Y. Qian
semanticscholar +1 more source
Non-standard s-process in massive rotating stars [PDF]
Astronomy & Astrophysics, 2018 Context. Recent studies show that rotation significantly affects the s-process in massive stars. Aims. We provide tables of yields for non-rotating and rotating massive stars between 10 and 150 M⊙ at Z = 10−3 ([Fe/H] = −1.8).
A. Choplin +5 more
semanticscholar +1 more source
Separations, 2023 In this research, the adsorption of gallium onto natural zeolite (clinoptilolite) and two mesoporous-activated carbons were compared and evaluated. The clinoptilolite was treated with HCl (HCPL), while mesoporous-activated carbons (MCSG60A and MCO1) were
Patricia Sáez +6 more
doaj +1 more source
Advances in s-process models [PDF]
Nuclear Physics A, 2001 8 pages, 4 figures, submitted for "Nuclei in the Cosmos 2000 ...
Lugaro, Maria, Herwig, Falk
openaire +2 more sources
Beilstein Journal of Organic Chemistry, 2023 A mild, operationally convenient, and practical method for the synthesis of synthetically useful N-arylsulfonylimines from N-(arylsulfonyl)benzylamines using K2S2O8 in the presence of pyridine as a base is reported herein. In addition, a “one-pot” tandem
Joydev K. Laha +2 more
doaj +1 more source
The s process in AGB stars as constrained by a large sample of barium stars [PDF]
Astronomy & Astrophysics, 2018 Context. Barium (Ba) stars are dwarf and giant stars enriched in elements heavier than iron produced by the slow neutron-capture process (s process).
B. Cseh +10 more
semanticscholar +1 more source
The s process in rotating low-mass AGB stars [PDF]
Astronomy & Astrophysics, 2019 Aims. We investigate the s-process during the AGB phase of stellar models whose cores are enforced to rotate at rates consistent with asteroseismology observations of their progenitors and successors. Methods.
J. Hartogh +7 more
semanticscholar +1 more source
The R-Process Alliance: Discovery of the First Metal-poor Star with a Combined r- and s-process Element Signature [PDF]
Astrophysical Journal, 2018 We present a high-resolution (R ∼ 35,000), high signal-to-noise ratio (S/N > 200) Magellan/MIKE spectrum of the star RAVE J094921.8−161722, a bright (V = 11.3) metal-poor red giant star with [Fe/H] = −2.2, identified as a carbon-enhanced metal-poor (CEMP)
M. Gull +13 more
semanticscholar +1 more source