Results 31 to 40 of about 1,179,358 (368)

Isotope Exchange Reaction of OH− Anion with HD at Temperatures from 15 K up to 300 K: Ion Trap Study

The Astrophysical Journal, 2023
This paper presents the results of an experimental study of the reaction of OH ^− anions with HD molecules leading to the formation of OD ^− anions.
Radek Plašil, Liliia Uvarova, Serhiy Rednyk, Štěpán Roučka, Erik Vanko, Petr Dohnal, Juraj Glosík   +6 more
doaj   +1 more source

The abundances of isotopes in the cosmic radiation [PDF]

AIP Conference Proceedings, 1989
Studies of the isotopic composition of nuclei in the cosmic radiation are reviewed, including abundances of the isotopes of elements from H to Ni (nuclear charge ...
openaire   +3 more sources

The Isotopic Abundances of Galactic Cosmic Rays with Atomic Number 29 ≤ Z ≤ 38

The Astrophysical Journal, 2022
The Cosmic Ray Isotope Spectrometer (CRIS) on the Advanced Composition Explorer spacecraft has been operating successfully in a halo orbit about the L1 Lagrange point since late 1997.
W. R. Binns, M. E. Wiedenbeck, T. T. von Rosenvinge, M. H. Israel, E. R. Christian, A. C. Cummings, G. A. de Nolfo, R. A. Leske, R. A. Mewaldt, E. C. Stone   +9 more
doaj   +1 more source

A mutli-technique search for the most primitive CO chondrites [PDF]

, 2018
As part of a study to identify the most primitive COs and to look for weakly altered CMs amongst the COs, we have conducted a multi-technique study of 16 Antarctic meteorites that had been classified as primitive COs. For this study, we have determined: (
Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Bao, Beaudoin, Bland, Bonal, Brearley, Burton, Busemann, C.M.O'D. Alexander, Chizmadia, Choi, Clayton, Cody, Cressey, Davidson, Davidson, Doyle, Dunn, Greenwood, Greenwood, Greenwood, Greenwood, Grossman, Hallis, Hewins, Howard, Howard, Howard, I.A. Franchi, J.M. Gibson, Jarosewich, K.T. Howard, King, Le Guillou, Lee, Madsen, Menzies, Miller, Nguyen, Nguyen, Nguyen, Nittler, Quirico, R. Bowden, R.C. Greenwood, Sakamoto, Savin, Schrader, Schrader, Schultz, Seto, Sheppard, Smith, Starkey, Tenner, Ushikubo, Ushikubo, Vollmer, Yan, Young, Young, Zheng   +68 more
core   +1 more source

A standardized quantitative analysis strategy for stable isotope probing metagenomics

mSystems, 2023
Stable isotope probing (SIP) facilitates culture-independent identification of active microbial populations within complex ecosystems through isotopic enrichment of nucleic acids.
Dariia Vyshenska, Pranav Sampara, Kanwar Singh, Andy Tomatsu, W. Berkeley Kauffman, Erin E. Nuccio, Steven J. Blazewicz, Jennifer Pett-Ridge, Katherine B. Louie, Neha Varghese, Matthew Kellom, Alicia Clum, Robert Riley, Simon Roux, Emiley A. Eloe-Fadrosh, Ryan M. Ziels, Rex R. Malmstrom   +16 more
doaj   +1 more source

Applications of Abundance Data and Requirements for Cosmochemical Modeling [PDF]

, 2001
Understanding the evolution of the universe from Big Bang to its present state requires an understanding of the evolution of the abundances of the elements and isotopes in galaxies, stars, the interstellar medium, the Sun and the heliosphere, planets and
Binns, W. R., Busemann, H., Chiappini, C., Gloeckler, G., Hoppe, P., Kirilova, D., Leske, R. A., Manuel, O. K., Mewaldt, R. A., Möbius, E., Wieler, R., Wiens, R. C., Wimmer-Schweingruber, R. F., Yanasak, N. E.   +13 more
core   +2 more sources

Isotopic compositions of the elements 2013 (IUPAC Technical Report)

, 2016
The Commission on Isotopic Abundances and Atomic Weights (ciaaw.org) of the International Union of Pure and Applied Chemistry (iupac.org) has revised the Table of Isotopic Compositions of the Elements (TICE).
J. Meija, T. Coplen, M. Berglund, W. Brand, P. De Biévre, M. Gröning, N. Holden, J. Irrgeher, R. Loss, T. Walczyk, T. Prohaska   +10 more
semanticscholar   +1 more source

Iron Isotope Constraints on the Structure of the Early Solar System

The Astrophysical Journal Letters, 2023
The recent advent of nontraditional isotopic systems has revealed that meteorites display a fundamental isotopic dichotomy between noncarbonaceous (NC) and carbonaceous (C) groups, which represent material from the inner and outer solar system ...
Yves Marrocchi, Maxime Piralla, François L. H. Tissot   +2 more
doaj   +1 more source

Atomic and Molecular Opacities for Brown Dwarf and Giant Planet Atmospheres [PDF]

, 2006
We present a comprehensive description of the theory and practice of opacity calculations from the infrared to the ultraviolet needed to generate models of the atmospheres of brown dwarfs and extrasolar giant planets.
A. Burrows, Brown L. R., Brown L. R., Brown L. R., C. M. Sharp, Carson T. R., Carson T. R., Chase M. W., Cunto W., Cunto W., Deirmendjian D., Dimitrijevic M. S., Eriksson G., Eriksson G., Fegley B., Jr., Fegley B., Jr., Fraser F. A., Irvine W. M., Jacquinet-Husson N., John T. L., John T. L., Plez B., Sharp C. M., Tsuji T., Varanasi P., Verner D. A., Wishart A. W.   +26 more
core   +3 more sources

A Systematic Observational Study on Galactic Interstellar Ratio 18O/17O. II. C18O and C17O J = 2–1 Data Analysis

The Astrophysical Journal Supplement Series, 2023
To investigate the relative amount of ejecta from high-mass versus intermediate-mass stars and to trace the chemical evolution of the Galaxy, we have performed a systematic study of Galactic interstellar ^18 O/ ^17 O ratios toward a sample of 421 ...
Y. P. Zou, J. S. Zhang, C. Henkel, D. Romano, W. Liu, Y. H. Zheng, Y. T. Yan, J. L. Chen, Y. X. Wang, J. Y. Zhao   +9 more
doaj   +1 more source