Results 131 to 140 of about 1,179,358 (368)
Variations in the Relative Abundance of the Carbon Isotopes in Plants [PDF]
, 1952 Frans E. Wickman
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Isotopic Carbon Abundances in M71
The Astronomical Journal, 1997 High resolution echelle spectra of the 8005 Angstroms CN bands are presented for five bright giants in the globular cluster M71 (C1951 +186, NGC 6838). An analysis of the (13) CN feature included in this region confirms the results of \cite{briley94a}; that the M71 red giants evince low (12}C/({13)) C ratios and that these ratios are correlated with CN
Briley, Michael M +3 more
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From Carbon Nitrides to COFs: Opportunities and Prospects in Photocatalytic CO2 Reduction
Advanced Materials, EarlyView.To underscore the potential of polymeric photocatalysts for CO2 photoreduction—from carbon nitrides to covalent organic frameworks—the table of contents graphic presents recent breakthroughs in the design of light‐responsive organic photocatalysts.
Wei Che +10 more
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The isotopic abundances of interstellar oxygen
The Astrophysical Journal, 1981 The relative abundance of /sup 17/O and /sup 18/O is found to be remarkably uniform in the giant molecular clouds of our Galaxy, varying by less than approx.5% between the galactic center and the most distant (approx.12 kpc) sources. This uniformity is seen to reflect the close similarity in the galactic distributions of the processes by which these ...
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Advanced Materials, EarlyView.Developing robust catalysts for ammonia electrochemical oxidation (AOR) is essential for advancing NH3 utilization technologies. This review summarizes recent progress in catalyst design and mechanistic understanding of AOR. In addition, it systematically investigates strategies to improve AOR performance for various types of catalysts.
Yike Ye +4 more
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The elemental composition of the Sun II. The iron group elements Sc to Ni
, 2014 We redetermine the abundances of all iron group nuclei in the Sun, based on neutral and singly-ionised lines of Sc, Ti, V, Mn, Fe, Co and Ni in the solar spectrum.
Asplund, Martin +4 more
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Theoretical effect of diffusion on isotopic abundance ratios in rocks and associated fluids [PDF]
, 1954 F. E. Senftle, J. T. Bracken
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A Roadmap for Plasma‐Enabled Electrocatalysis in Urea Production
Advanced Materials, EarlyView.A modular plasma—electrochemical platform enables fully electrified urea synthesis from air and CO2 under ambient conditions. This Review integrates plasma oxidation, C─N coupling electrolysis, mechanistic insights, and techno‐economic metrics into a roadmap for scalable, distributed, and renewable fertilizer production.
Jingwen Huang +6 more
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Comparison of the isotopic abundance of U235 and U238 and the radium activity ratios in Colorado Plateau uranium ores [PDF]
, 1956 F.E. Senftle +3 more
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Advanced Materials, EarlyView.This review summarizes recent advances in metal‐based nanomaterials (MBNs) as multifunctional platforms for next‐generation diagnostics and nanodynamic therapies (NDTs), highlighting their structural tunability, diverse therapeutic modalities, and broad biomedical applications in oncology and infectious disease control.
Qihang Ding +11 more
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