Results 81 to 90 of about 7,581,489 (212)

The Milky Way Radial Metallicity Gradient as an Equilibrium Phenomenon: Why Old Stars Are Metal Rich

The Astrophysical Journal
Metallicities of both gas and stars decline toward large radii in spiral galaxies, a trend known as the radial metallicity gradient. We quantify the evolution of the metallicity gradient in the Milky Way as traced by APOGEE red giants with age estimates ...
James W. Johnson, David H. Weinberg, Guillermo A. Blanc, Ana Bonaca, Gwen C. Rudie, Yuxi (Lucy) Lu, Bronwyn Reichardt Chu, Emily J. Griffith, Tawny Sit, Jennifer A. Johnson, Liam O. Dubay, Miqaela K. Weller, Daniel A. Boyea, Jonathan C. Bird   +13 more
doaj   +1 more source

Chemical Abundance Ratios of Nitrogen-rich Galaxies Identified at z ∼ 6–12: Observational Demographics and Models

The Astrophysical Journal
We present chemical abundance ratios of eight nitrogen-rich ([N/O] > 0.3) galaxies at z  ∼ 6–12 identified by the first 4 yr of JWST observations, and compare these ratios with chemical evolution models.
Kuria Watanabe, Masami Ouchi, Kimihiko Nakajima, Nozomu Tominaga, Yuichi Harikane, Miho N. Ishigaki, Yuki Isobe, Minami Nakane, Moka Nishigaki, Ken’ichi Nomoto, Yoshiaki Ono, Masato Onodera, Akihiro Suzuki, Koh Takahashi, Yui Takeda, Hiroto Yanagisawa   +15 more
doaj   +1 more source

Decoupling the effects of surface morphology and interfacial chemistry on localized electrochemical kinetics in LiCoO₂ cathodes. [PDF]

Chem Sci
Guan Y, Wang P, Gao N, Liu P, Cao W, Ding S, Meng L, Xi K, Gao R.   +8 more
europepmc   +1 more source

Stacking order as a tuning parameter in layered quantum materials. [PDF]

Natl Sci Rev
Nie L, Wu T.
europepmc   +1 more source

Chemical evolution

Journal of Molecular Structure, 1972
AKABOSHI, Mitsuhiko, KAWAI, Kenichi
  +5 more sources

Low-Molecular-Weight Polyols as Key Factors in Sulfur- and Borate-Mediated Protomembrane Formation Before the RNA World. [PDF]

Membranes (Basel)
Dembitsky VM.
europepmc   +1 more source

Institutional Evolution and Change: Environmentalism and the US Chemical Industry

, 2017
A. Hoffman
semanticscholar   +1 more source

Molecular Recognition of the Self-Assembly Mechanism of Glycosyl Amino Acetate-Based Hydrogels

ACS Omega, 2021
Yi Zhou, Jiamei Liu, Hui Li, Heng Zhang, Zhaoyong Guan, Yanyan Jiang   +5 more
doaj   +1 more source

Spatiotemporal Evolution of Interfacial pH and H₂ Level During Degradation of Mg-Al-Y-Zn-Gd Alloys in Hanks' Balanced Salt Solution. [PDF]

Molecules
Wang C, Yin M, Yuan Z, Zhang T, Xu Z, Li Y, Xu M, Chang J, Shao Y, Sun C, Wei D, Dong Q, Chu C, Xue F, Liu H, Bai J.   +15 more
europepmc   +1 more source

Atomic-Scale Mechanism of Titanium-Induced Frictional Removal of Silicon Carbide: A Molecular Dynamics Study. [PDF]

Materials (Basel)
Ling X, Tian W, Li Y, Li L, Dai J, Li K, Li Z.   +6 more
europepmc   +1 more source