Results 131 to 140 of about 205,088 (284)
, 2004 The validity of oxygen and nitrogen abundances derived from the global emission-line spectra of galaxies via the P-method has been investigated using a collection of published spectra of individual HII regions in irregular and spiral galaxies.
Carollo +31 more
core +1 more source
Abundances in Virgo spiral galaxies [PDF]
Publications of the Astronomical Society of the Pacific, 1991 oxygen abundances substantially higher than in comparable field galaxies. Possible causes include stripping of the outer hydrogen disk and curtailment of cosmological infall in the cluster environment.
openaire +2 more sources
Veterinary Clinical Pathology, EarlyView.Abstract MicroRNAs (miRNAs or miRs) are small, non‐coding RNAs that play a crucial role in gene regulation, making them potential biomarkers for various diseases. In the field of veterinary medicine, there is a growing interest in exploring the diagnostic and therapeutic potential of miRNAs in kidney diseases affecting dogs and cats.
Candice P. Chu, Mary B. Nabity
wiley +1 more source
Chemical Abundance Gradients in Open Clusters from the Gaia/LAMOST Sample
The Astronomical JournalBased on a large and homogeneous sample of 299 open clusters (OCs) from Gaia DR3 and large sky area multiobject fiber spectroscopic telescope DR11, we studied the abundance gradients of the α -elements Mg and Si, and the iron-peak elements Fe and Ni to ...
Guochao Yang +5 more
doaj +1 more source
Abundances and gradients in nearby galaxies [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractThe study of chemical abundance gradients can provide essential information on the evolution of disk galaxies. Here I briefly review our current observational knowledge concerning the abundances of the ionized gas (H ii regions and planetary nebulae) in nearby galaxies, and how they inform us about the time evolution of metallicity gradients.
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Revolutionizing multi‐omics analysis with artificial intelligence and data processing
Quantitative Biology, Volume 13, Issue 3, September 2025.Abstract Our understanding of intricate biological systems has been completely transformed by the development of multi‐omics approaches, which entail the simultaneous study of several different molecular data types. However, there are many obstacles to overcome when analyzing multi‐omics data, including the requirement for sophisticated data processing
Ali Yetgin
wiley +1 more source
The High-Redshift Gas-Phase Mass–Metallicity Relation in FIRE-2
The Astrophysical Journal LettersThe unprecedented infrared spectroscopic capabilities of JWST have provided high-quality interstellar medium metallicity measurements and enabled characterization of the gas-phase mass–metallicity relation (MZR) for galaxies at z ≳ 5 for the first time ...
Andrew Marszewski +4 more
doaj +1 more source
Mass Spectrometry Reviews, Volume 44, Issue 3, Page 213-453, May/June 2025.Abstract The use of matrix‐assisted laser desorption/ionization (MALDI) mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this review is the 12th update of the original article published in 1999 and brings coverage of the literature to the end of 2022.
David J. Harvey
wiley +1 more source
The Astrophysical JournalWe describe new ultradeep James Webb Space Telescope (JWST) NIRSpec PRISM and grating spectra for the galaxies JADES-GS-z11-0 ( ${z}_{\mathrm{spec}}={11.122}_{-0.003}^{+0.005}$ ) and JADES-GS-z13-0 ( ${z}_{\mathrm{spec}}={13.20}_{-0.04}^{+0.03}$ ), the ...
Kevin N. Hainline +31 more
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On the Helium Abundance in the Proto-Galaxy [PDF]
, 1967 Sidney van den Bergh
openalex +1 more source