Results 21 to 30 of about 8,687 (242)
The Astrochemistry Implications of Quantum Chemical Normal Modes Vibrational Analysis
Galaxies, 2018 Understanding the molecular vibrations underlying each of the unknown infrared emission (UIE) bands (such as those found at 3.3, 3.4, 3.5, 6.2, 6.9, 7.7, 11.3, 15.8, 16.4, 18.9 μ m) observed in or towards astronomical objects is a vital link to
SeyedAbdolreza Sadjadi +1 more
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Theoretical approaches for studying Astrochemistry [PDF]
EPJ Web of Conferences, 2012 The most popular ab initio theoretical approaches that are used to study the gas phase astrochemical reactivity are presented. The methods that are needed for the electronic calculation and the statistical approaches that are used for determining the ...
Talbi D.
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Chemical Reactions in Astrochemistry [PDF]
Symposium - International Astronomical Union, 1992 This paper is devoted to chemistry in the gas phase dealing firstly with ion-molecule reactions at extremely low temperature. The experimental techniques that have been used in this field are shortly presented and the reactions that have been studied using the CRESU(S) method reviewed.
B. R. Rowe
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Computational challenges in Astrochemistry [PDF]
WIREs Computational Molecular Science, 2017 Cosmic evolution is the tale of progressive transition from simplicity to complexity. The newborn universe starts with the simplest atoms formed after the Big Bang and proceeds toward ‘astronomical complex organic molecules’ (astroCOMs). Understanding the chemical evolution of the universe is one of the main aims of Astrochemistry, with the starting ...
Małgorzata Biczysko +2 more
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Thermal Synthesis of Carbamic Acid and Its Dimer in Interstellar Ices: A Reservoir of Interstellar Amino Acids [PDF]
ACS Central Science, 2023 Joshua H. Marks +6 more
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Kinetic database for astrochemistry [PDF]
EAS Publications Series, 2012 KIDA (for KInetic Database for Astrochemistry) is a project initiated by different communities in order to 1) improve the interaction between astrochemists and physico-chemists and 2) simplify the work of modeling the chemistry of astrophysical environments.
Valentine Wakelam, Tae Team
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Astrochemistry of dimethyl ether [PDF]
Astronomy & Astrophysics, 2005 Dimethyl ether (DME, CH 3 OCH 3 ) is one of the largest organic molecules detected in the interstellar gas and shows high abundances in star-forming regions, known as hot molecular cores. The observed DME might be formed on grains or by secondary gas phase reactions from a precursor molecule, which in turn was sublimed into the gas phase from the grain
Z. Peeters +6 more
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Laboratory surface astrochemistry experiments [PDF]
Review of Scientific Instruments, 2015 Although several research groups have studied the formation of H2 on interstellar dust grains using surface science techniques, few have explored the formation of more complex molecules. A small number of these reactions produce molecules that remain on the surface of interstellar dust grains and, over time, lead to the formation of icy mantles.
Victoria L. Frankland +4 more
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Journal of Separation Science, Volume 45, Issue 24, Page 4416-4426, December 2022., 2022 This work proposes a comprehensive two‐dimensional gas chromatography method for the resolution and quantification of 27 amino acids, including 17 enantiomeric pairs, as stable N‐trifluoroacetyl‐O‐methyl ester derivatives. The derivatization approach in combination with enantioselective two‐dimensional gas chromatography has proven to be highly ...
Raphaël Pepino +4 more
wiley +1 more source