Results 51 to 60 of about 43,170,865 (319)

Barium stars and the s-process

The Astrophysical Journal, 1980
Theoretical s-process calculations are presented. Isotopic abundances are summed, so that atomic number Z becomes the independent variable. This form of representation of the calculations has distinct advantages in the interpretation of stellar data, since one generally does not have isotopic information.
C. R. Cowley, P. L. Downs
openaire   +1 more source

Detailed homogeneous abundance studies of 14 Galactic s-process enriched post-AGB stars: In search of lead (Pb) [PDF]

, 2015
Context. This paper is part of a larger project in which we systematically study the chemical abundances of Galactic and extragalactic post-asymptotic giant branch (post-AGB) stars.
K. D. Smedt, H. Winckel, D. Kamath, L. Siess, S. Goriely, A. Karakas, R. Manick   +6 more
semanticscholar   +1 more source

NSAIDs as a Drug Repurposing Strategy for Biofilm Control

Antibiotics, 2020
Persistent infections, usually associated with biofilm-producing bacteria, are challenging for both medical and scientific communities. The potential interest in drug repurposing for biofilm control is growing due to both disinvestment in antibiotic R&D ...
Cláudia Leão, Anabela Borges, Manuel Simões   +2 more
doaj   +1 more source

Energy consumption and carbon footprint of perovskite solar cells

Energy Reports, 2022
Recently, perovskite solar cells (PSCs) emerged and promise to break the prevailing solar energy paradigm by combining both low-cost and high-efficiency.
Ana L. Carneiro, António A. Martins, Vera C.M. Duarte, Teresa M. Mata, Luísa Andrade   +4 more
doaj   +1 more source

Data for the s Process from n_TOF

, 2019
A considerable amount of (n, γ) reactions has been studied, so far, at the neutron time-of-flight facility n_TOF at CERN. The experimental program aims at determining and improving cross sections for a number of isotopes relevant to s-process nucleosynthesis. A brief summary of some physical cases related to the s-process nucleosyntheis is presented in
Massimi, C., Aberle, O., Alcayne, V., Andrzejewski, J., Audouin, L., B?cares, V., Babiano-Suarez, V., Bacak, M., Barbagallo, M., Benedikt, T., Bennett, S., Berthoumieux, E., Billowes, J., Bosnar, D., Brown, A., Busso, M., Caama?o, M., Caballero-Ontanaya, L., Calvi?o, F., Calviani, M., Cano-Ott, D., Casanovas, A., Castelluccio, D.M., Cerutti, F., Chiaveri, E., Clai, G., Colonna, N., Cort?s, G., Cort?s-Giraldo, M.A., Cosentino, L., Cristallo, S., Damone, L.A., Davies, P.J., Dietz, M., Domingo-Pardo, C., Dressler, R., Ducasse, Q., Dupont, E., Dur?n, I., Eleme, Z., Fern?ndez-Dominguez, B., Ferrari, A., Finocchiaro, P., Furman, V., G?bel, K., Gawlik, A., Gilardoni, S., Gon?alves, I.F., Gonz?lez-Romero, E., Guerrero, C., Gunsing, F., Heinitz, S., Heyse, J., Jenkins, D.G., Junghans, A.R., K?ppeler, F., Kadi, Y., Kimura, A., Knapova, I., Kokkoris, M., Kopatch, Y., Krti?ka, M., Kurtulgil, D., Ladarescu, I., Lederer-Woods, C., Lonsdale, S.J., Macina, D., Manna, A., Mart?nez, T., Masi, A., Mastinu, P., Mastromarco, M., Matteucci, F., Maugeri, E.A., Mazzone, A., Mendoza, E., Mengoni, A., Michalopoulou, V., Milazzo, P.M., Mingrone, F., Moreno-Soto, J., Musumarra, A., Negret, A., Og?llar, F., Oprea, A., Patronis, N., Pavlik, A., Perkowski, J., Piersanti, L., Petrone, C., Pirovano, E., Porras, I., Praena, J., Quesada, J.M., Ramos-Doval, D., Rauscher, T., Reifarth, R., Rochman, D., Sabat?-Gilarte, M., Saxena, A.   +199 more
openaire   +8 more sources

To Ba or not to Ba: Enrichment in s-process elements in binary systems with WD companions of various masses [PDF]

, 2015
Context. The enrichment in s-process elements of barium stars is known to be due to pollution by mass transfer from a companion formerly on the thermally-pulsing asymptotic giant branch (AGB), now a carbon-oxygen white-dwarf (WD). Aims.
T. Merle, A. Jorissen, S. V. Eck, T. Masseron, T. Masseron, H. Winckel   +5 more
semanticscholar   +1 more source

A New Method to Obtain Neutrons with Maxwellian Energy Distribution for Nuclear Astrophysics Study

Yuanzineng kexue jishu
To generate a neutron beam exhibiting a Maxwellian energy distribution with narrow emission angles for measuring the neutron capture reaction rates of the s-process nuclides, a monoenergetic 3.4 MeV proton beam produced by the tandem-accelerator in the ...
HOU Jianglin1, YAN Shengquan1, LI Yunju1, ZHANG Weijie2, LI Ertao3, WANG Youbao1, SHEN Yangping1, WANG Zhiqiang1, 4, LIU Yina1, 4, GUO Bing1
doaj   +1 more source

Mairá-Potato (Casimirella sp.): Botanical, Food, Pharmacological, and Phytochemical Aspects

Molecules, 2023
Millions of people in the world live in food insecurity, so identifying a tuber with characteristics capable of meeting the demand for food and also identifying active compounds that can be used to minimize harm to human health is of great value. The aim
Danusa Silva da Costa, Lucely Nogueira dos Santos, Nelson Rosa Ferreira, Katiuchia Pereira Takeuchi, Alessandra Santos Lopes   +4 more
doaj   +1 more source

Broad levels in 17 O and their relevance for the astrophysical s process [PDF]

, 2015
Levels in $^{17}$O affect the astrophysical s-process in two opposite ways. The neutron production is enhanced by resonances in the $^{13}$C($\alpha$,$n$)$^{16}$O reaction at excitation energies around 7 MeV in $^{17}$O, and the number of available ...
T. Faestermann, P. Mohr, R. Hertenberger, H. Wirth   +3 more
semanticscholar   +1 more source

Probing astrophysically important states in the Mg 26 nucleus to study neutron sources for the s process [PDF]

, 2015
Background: The ²²Ne(α,n) ²⁵Mg reaction is the dominant neutron source for the slow neutron capture process (s process) in massive stars, and contributes, together with C¹³(α,n)O¹⁶, to the production of neutrons for the s process in asymptotic giant ...
R. Talwar, T. Adachi, G. Berg, Bin Li, S. Bisterzo, S. Bisterzo, M. Couder, R. deBoer, Xiaoliang Fang, H. Fujita, Y. Fujita, J. Görres, K. Hatanaka, T. Itoh, T. Kadoya, A. Long, K. Miki, D. Patel, M. Pignatari, M. Pignatari, Y. Shimbara, A. Tamii, M. Wiescher, Tetsuya Yamamoto, M. Yosoi   +24 more
semanticscholar   +1 more source