Results 91 to 100 of about 52,001 (350)

On the radial abundance gradients of nitrogen and oxygen in the inner Galactic disc [PDF]

, 2021
Karla Z. Arellano-Córdova, C. Esteban, J. García–Rojas, J. Eduardo Méndez-Delgado   +3 more
openalex   +1 more source

Advanced Experiment Design Strategies for Drug Development

Advanced Intelligent Discovery, EarlyView.
Wang et al. analyze 592 drug development studies published between 2020 and 2024 that applied design of experiments methodologies. The review surveys both classical and emerging approaches—including Bayesian optimization and active learning—and identifies a critical gap between advanced experimental strategies and their practical adoption in ...
Fanjin Wang, Anthony Harker, Mohan Edirisinghe, Maryam Parhizkar   +3 more
wiley   +1 more source

Alfven wave scattering and the secondary to primary ratio [PDF]

The cosmic ray abundances have traditionally been used to determine the elemental and isotopic nature of galactic ray sources and average measures of propagation conditions.
Bretthorst, G. L., Margolis, S. H.
core   +1 more source

Chemical composition of evolved stars of high galactic latitude

, 2005
We have carried out abundance analysis for a sample of high galactic latitude supergiants in search of evolved stars. We find that HD 27381 has atmospheric parameters and an abundance pattern very similar to that of the post-AGB star HD 107369.
A. Arellano Ferro, Allende Prieto, Allende Prieto, Andrievsky, Arellano Ferro, Baranne, Behr, Bidelman, Bravo-Alfaro, Conlon, Conlon, Danziger, Gies, Gilmore, Giridhar, Giridhar, Giridhar, Giridhar, Gray, Grevesse, Jeffery, Kupka, Lambert, Lambert, Lodders, Maas, McCausland, Mermilliod, Moehler, Moehler, Mooney, Napiwotzki, Newell, Prochaska, Przybilla, Przybilla, Przybilla, Qiu, Qiu, Reddy, Rufener, Schönberner, Sunetra Giridhar, Takeda, Trams, Tull, van der Veen, Van Winckel, Van Winckel, Van Winckel, Venn, Venn, Zacs   +52 more
core   +1 more source

Heavy element abundances in galactic globular clusters

Astronomy & Astrophysics
Context. Globular clusters are considered key objects for understanding the formation and evolution of the Milky Way. In this sense, the characterisation of their chemical and orbital parameters can provide constraints on chemical evolution models of the Galaxy. Aims.
J. Schiappacasse-Ulloa, S. Lucatello, G. Cescutti, E. Carretta   +3 more
openaire   +3 more sources

Large Language Model‐Based Chatbots in Higher Education

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
The use of large language models (LLMs) in higher education can facilitate personalized learning experiences, advance asynchronized learning, and support instructors, students, and researchers across diverse fields. The development of regulations and guidelines that address ethical and legal issues is essential to ensure safe and responsible adaptation
Defne Yigci, Merve Eryilmaz, Ail K. Yetisen, Savas Tasoglu, Aydogan Ozcan   +4 more
wiley   +1 more source

The Open Cluster Chemical Abundances and Mapping Survey. VIII. Galactic Chemical Gradient and Azimuthal Analysis from SDSS/MWM DR19

The Astronomical Journal
The Open Cluster Chemical Abundances and Mapping (OCCAM) survey seeks to curate a large, comprehensive, uniform dataset of open clusters and member stars to constrain key Galactic parameters.
Jonah M. Otto, Peter M. Frinchaboy, Natalie R. Myers, James W. Johnson, John Donor, Ahabar Hossain, Szabolcs Mészáros, Hailey Wallace, Katia Cunha, Binod Bhattarai, Amaya Sinha, Gail Zasowski, Sarah R. Loebman, Alessa I. Wiggins, Adrian M. Price-Whelan, Taylor Spoo, Diogo Souto, Dmitry Bizyaev, Kaike Pan, Andrew K. Saydjari, Ying-Yi Song   +20 more
doaj   +1 more source

Features of Chemical-Element Abundances in Open Star Clusters of the Galaxy

Open Astronomy, 2016
On the basis of the authors’ compiled catalog containing spectroscopic abundances of 14 chemical elements for 90 open star clusters of the Galaxy, we show that in the young clusters not only barium but also three other studied elements of slow neutron ...
Marsakov V. A., Koval’ V. V., Gozha M. L., Shpigel’ L. V.   +3 more
doaj   +1 more source

Abundances from solar-flare gamma-ray line spectroscopy [PDF]

Elemental abundances of the ambient gas at the site of gamma ray line production inthe solar atmosphere are deduced using gamma ray line observations from a solar flare.
Forrest, D. J., Kozlovsky, B., Murphy, R. J., Ramaty, R.   +3 more
core   +1 more source

Chemical Abundances of Planetary Nebulae in M33

, 2004
Using spectroscopic data presented in Magrini et al. (2003), we have analyzed with the photoionization code CLOUDY 94.00 (Ferland et al. 1998) 11 Planetary Nebulae belonging to the spiral galaxy M 33. Central star temperatures and nebular parameters have
A. Mampaso, Ambartsumian, Armsdorfer, Che, Corradi, Costa, Dufour, Exter, Ferland, Gurzadyan, Henry, Howard, Iben, Jacoby, Jacoby, Jacoby, Kingsburgh, L. Magrini, Leisy, M. Perinotto, Magrini, Mampaso, Maran, Morisset, Peimbert, Perinotto, Phillips, R. L. M. Corradi, Rauch, Richer, Stasinska, Vílchez, Walsh, Walsh   +33 more
core   +1 more source