Results 261 to 270 of about 5,445,983 (296)
Enhancing IR-MALDESI MSI Spatial Resolution Through Beam Constriction With a Ring-Actuated Iris. [PDF]
Rapid Commun Mass SpectromAshbacher SM +6 more
europepmc +1 more source
Synergistic and Fungicide-Reducing Effects of Biological Agents with Chemical Fungicides against Ginseng Rusty Root Rot. [PDF]
J Agric Food ChemLi XQ +11 more
europepmc +1 more source
The preservation of francolite-associated sulfate in lingulid brachiopods. [PDF]
Chem GeolTodes JP +4 more
europepmc +1 more source
A summary of chemical abundance in seaweeds
A summary of chemical abundance in seaweedsopenaire +1 more source
On the influence of the environment on galactic chemical abundances [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We examine the influence of the environment on the chemical abundances of late-type galaxies with masses of 10(9.1)-10(11) M-circle dot using data from the Sloan Digital Sky Survey. We find that the environmental influence on galactic chemical abundances
Igor Zinchenko +2 more
exaly +3 more sources
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Chemical Abundances of Symbiotic Giants
EAS Publications Series, 2015High resolution (R ∼ 50000), near-IR spectra were used to measure photospheric abundances of CNO and elements around the iron peak for 24 symbiotic giants. Spectrum synthesis was employed using local thermal equilibrium and hydrostatic model atmospheres. The metallicities are distributed in a wide range with maximum around [ Fe / H ] ∼−0.4 – − 0.3 dex.
C. Gałan +3 more
openaire +1 more source
1988
The precise determination of chemical abundances in stars is the key to a number of important disciplines in modern astrophysics including stellar evolution and nucleosynthesis as well as the chemical and dynamical evolution of the Galaxy. The basic transport mechanisms in stellar atmospheres rule the observational aspects of stellar surfaces which are
openaire +1 more source
The precise determination of chemical abundances in stars is the key to a number of important disciplines in modern astrophysics including stellar evolution and nucleosynthesis as well as the chemical and dynamical evolution of the Galaxy. The basic transport mechanisms in stellar atmospheres rule the observational aspects of stellar surfaces which are
openaire +1 more source
Chemical Abundances in Galaxies
1988This article is intended as a brief overview of chemical abundances in galaxies other than our own. Attention is concentrated on global properties of ellipticals and spirals, and the methods by which abundances are estimated. References are predominantly to work which has appeared since the review of Pagel and Edmunds (1981).
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Chemical Abundances in Molecular Clouds
1987At present approximately 70 interstellar molecules are known. We discuss methods for determining chemical abundances in interstellar clouds and present results for the best studied regions, which include the “spiral arm” clouds seen towards distant continuum sources, quiescent dark and giant clouds, and the gas in regions of active star formation.
W. M. Irvine +2 more
openaire +1 more source
1981
Photoelectric, filter photometry and spectrophotometry allow us to derive absolute abundances for a number of species in comets. Despite large differences in morphology, in gas-to-dust ratio, and in dynamical age, there appears to be remarkably little variation from comet to comet in the relative production rates of the species studied thus far.
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Photoelectric, filter photometry and spectrophotometry allow us to derive absolute abundances for a number of species in comets. Despite large differences in morphology, in gas-to-dust ratio, and in dynamical age, there appears to be remarkably little variation from comet to comet in the relative production rates of the species studied thus far.
openaire +1 more source