Results 1 to 10 of about 912,361 (332)
Astronomische Nachrichten, 2014 AbstractThe measurement of isotopic ratios provides a privileged insight both into nucleosynthesis and into the mechanisms operating in stellar envelopes, such as gravitational settling. In this article, we give a few examples of how isotopic ratios can be determined from high‐resolution, high‐quality stellar spectra.
Caffau, E. +6 more
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The Isotopes of Antimony [PDF]
Nature, 1922 OWING to the kindness of Prof. G. T. Morgan, who prepared a specimen of pure antimony trimethyl for this purpose, I have now been able to obtain the mass-spectrum of antimony. The element is characterised by two lines of nearly equal strength at 121, 123. The first is the more intense by perhaps 10 to 20 per cent.
F. W. Aston
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Upgrade to the focal-plane detector system of the S800 spectrograph at FRIB [PDF]
EPJ Web of Conferences, 2023 The present work describes the ongoing upgrade of the focal-plane detector system and the associated data acquisition system of the large-acceptance S800 magnetic spectrograph.
Cortesi Marco +8 more
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Water Supply, 2023 In this article, a coastal region of India having high water demand for irrigation supply was studied for its groundwater quality in temporal and spatial domains.
Bhumika Kumari +6 more
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The vanadium isotopic constitution of petroleum asphaltenes: La Luna Formation (Venezuela) [PDF]
Journal of the Serbian Chemical Society, 2000 High resolution mass spectrometry indicates that the isotopic abundance of 50Vanadium (V) of the Late Cretaceous La Luna petroleum asphaltenes and related source kerogen of marine origin (both highly enriched with V > 2000 ppm) is higher by ...
Premović Pavle I. +7 more
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Inferring individual marine migration from otolith ecogeochemical signatures of a wide-ranging fish
Frontiers in Marine Science, 2022 Despite technical advances in archival tag attachment and functional longevity, long-term tracking of individuals of some fish species remains prohibitively difficult.
Nora Hanson +4 more
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Inhibition of cardiac PERK signaling promotes peripartum cardiac dysfunction
Scientific Reports, 2021 Peripartum cardiomyopathy (PPCM) is a life-threatening heart failure occurring in the peripartum period. Although mal-angiogenesis, induced by the 16-kDa N-terminal prolactin fragment (16 K PRL), is involved in the pathogenesis, the effect of full-length
Takashi Shimizu +6 more
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Communicative & Integrative Biology, 2022 Despite considerable advances in the past 50 y, the mechanism of ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) catalysis is still not well understood.
Camille Bathellier, Guillaume Tcherkez
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The Isotopes of Americium [PDF]
Physical Review, 1950 Three new americium activities (Am{sup 238}?, Am{sup 243}, and Am{sup 244?}, the latter two formed by n,{gamma} reactions) are described and some additional information is given on previously reported americium isotopes.
Street, K, Jr., Ghiorso, A, Seaborg, G T
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