Results 31 to 40 of about 1,572,221 (316)

Chemical Evolution of Bulges

Astrophysics and Space Science, 2001
1 pag, contribution to the Euroconference "The Evolution of Galaxies. I. Observational Clues"
Mercedes Mollá, Federico Ferrini
openaire   +3 more sources

Chemical Evolution of the Juvenile Universe [PDF]

, 2009
Only massive stars contribute to the chemical evolution of the juvenile universe corresponding to [Fe/H]
Barklem, Burbidge, Cayrel, François, G. J. Wasserburg, Hill, Käppeler, Qian, Woosley, Y.-Z. Qian   +9 more
core   +2 more sources

Mapping the Galactic Metallicity Gradient with Open Clusters: The State-of-the-Art and Future Challenges

Universe, 2022
In this paper, we make use of data collected for open cluster members by high-resolution spectroscopic surveys and programmes (i.e., APOGEE, Gaia-ESO, GALAH, OCCASO, and SPA). These data have been homogenised and then analysed as a whole.
Lorenzo Spina, Laura Magrini, Katia Cunha   +2 more
doaj   +1 more source

Evolution before genes

Biology Direct, 2012
Background Our current understanding of evolution is so tightly linked to template-dependent replication of DNA and RNA molecules that the old idea from Oparin of a self-reproducing 'garbage bag' ('coacervate') of chemicals that predated fully-fledged ...
Vasas Vera, Fernando Chrisantha, Santos Mauro, Kauffman Stuart, Szathmáry Eörs   +4 more
doaj   +1 more source

Volatile Organic Compounds of Bryophytes from Peninsular Malaysia and Their Roles in Bryophytes

Plants, 2022
Volatile emissions from 22 bryophyte species from Peninsular Malaysia were collected using a dynamic headspace technique and analyzed by gas chromatography–mass spectrometry (GC-MS).
Chin Wen Koid, Nur Fariza M. Shaipulah, Gaik Ee Lee, S. Robbert Gradstein, Yoshinori Asakawa, Yosie Andriani, Arifullah Mohammed, Nik Norhazrina, Poh Wai Chia, Muhammad Zulhimi Ramlee   +9 more
doaj   +1 more source

Chiral and Molecular Recognition through Protonation between Aromatic Amino Acids and Tripeptides Probed by Collision-Activated Dissociation in the Gas Phase

Molecules, 2018
Chiral and molecular recognition through protonation was investigated through the collision-activated dissociation (CAD) of protonated noncovalent complexes of aromatic amino acid enantiomers with l-alanine- and l-serine-containing tripeptides using a ...
Akimasa Fujihara, Hikaru Inoue, Masanobu Sogi, Michiko Tajiri, Yoshinao Wada   +4 more
doaj   +1 more source

Refueling the Magic Furnace: Kilonova 2017 Rewrites the Story of Element Origins

Journal of Big History, 2018
For more than half a century, we have understood element creation in the stars—described in Marcus Chown’s colorful image as “the magic furnace.” From 1958 until 2017, supernova explosions were thought to be the primary site of element creation above ...
Barry Woods
doaj   +1 more source

Origin of Life: The Point of No Return

Life, 2020
Origin of life research is one of the greatest scientific frontiers of mankind. Many hypotheses have been proposed to explain how life began. Although different hypotheses emphasize different initial phenomena, all of them agree around one important ...
Dimiter Kunnev
doaj   +1 more source

Chemical Evolution in the Large Magellanic Cloud [PDF]

, 1999
We present a new input parameter set of the Pagel model (Pagel & Tautvai$\rm \breve{s}$ien$\rm \dot{e}$ 1998) for the Large Magellanic Cloud (LMC) in order to reproduce the observations, including the star formation rate (SFR) history.
Nagataki, S., Watanabe, G.
core   +4 more sources

Chemical evolution of the intra-cluster medium [PDF]

, 2003
The high metallicity of the intra-cluster medium (ICM) is generally interpreted on the base of the galactic wind scenario for elliptical galaxies. In this framework, we develop a toy-model to follow the chemical evolution of the ICM, formulated in ...
A. Moretti, Abel, Andreon, Andreon, Arimoto, Arimoto, Arnaboldi, Arnaud, Balogh, Becker, Bica, Bressan, Briceño, Bromm, Bryan, C. Chiosi, Carraro, Chabrier, Chiosi, Chiosi, Chiosi, Ciotti, Cirimele, David, David, David, De Grandi, De Propris, De Young, Djorgovski, Driver, Elbaz, Ettori, Ferguson, Ferguson, Finoguenov, Finoguenov, Fukazawa, Fukazawa, Gibson, Gibson, Girardi, Gregg, Greggio, Hernandez, Hinnes, Irwin, Ishimaru, Johnstone, Kaastra, L. Portinari, Lacey, Larson, Larson, Larson, Larson, Lin, Loewenstein, Loewenstein, Luhman, Marigo, Marigo, Martinelli, Martinelli, Matteucci, Matteucci, Matteucci, Matteucci, Matteucci, Mitchell, Mobasher, Mori, Mushotzky, Nath, Padoan, Padoan, Pei, Pipino, Portinari, Press, Reiprich, Renzini, Renzini, Renzini, Roussel, Scalo, Schechter, Serlemitsos, Silk, Smith, Steidel, Tamura, Tantalo, Tinsley, Tornatore, Trentham, Trentham, Trentham, Valdarnini, Vigroux, White, White, White, Woosley, Worthey, Zepf   +105 more
core   +1 more source