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Uranium Isotope Enrichment by Chemical Method
Nuclear Technology, 1980Through basic research on the separation of uranium isotopes by the isotopic equilibrium reaction of uranus and uranyl ions, a novel redox chromatography in adsorption columns has been discovered, which is most efficient for the enrichment of /sup 235/U.
Maomi Seko +3 more
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Protogalactic explosions and intracluster chemical enrichment
Astrophysics and Space Science, 1980Using a hydrodynamic model of protogalactic evolution, we explain the amount of iron in rich clusters, deduced from X-ray observations. In fact, our calculations show that a strong shock wave originates in the first violent collapse phase and leaves the protogalaxy, carrying out a substantial fraction of its mass, with roughly solar metallicity and ...
Di Fazio, A +2 more
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Chemical enrichment of tyrosine phosphopeptides.
Se pu = Chinese journal of chromatography, 2012Tyrosine phosphorylation of proteins plays a vital role in signal transduction pathway. Currently, antibody-based method dominates the tyrosine phosphopeptide enrichment and there is a lack of other general approaches for selective isolation of tyrosine phosphopeptides. However, antibody-based methods are of high cost and biased to certain motifs. Here
Lianghai, Hu, W Andy, Tao
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Chemical labeling and enrichment of nitrotyrosine-containing peptides
Talanta, 2010Protein tyrosine nitration (PTN) is a post-translational modification of proteins associated with a number of inflammatory diseases. While PTN is rather selective (not all proteins are modified and within a protein, only certain tyrosines are subject to nitration), no consensus sequence has been identified.
Abello, Nicolas +4 more
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High enrichment of 15N by chromatographic chemical process
Journal of Chromatography A, 2008Nitrogen isotope enrichment experiments were conducted to obtain highly enriched (15)N by ion-exchange process. (15)NH(4)Cl ((15)N=80%) as feeding materials were used to perform the chromatographic operation with two different flow rates and column diameters. Both separation coefficient (epsilon) and height equivalent to a theoretical plate (HETP) have
Xingcheng, Ding +3 more
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Chemical enrichment of the Intracluster Medium
Astronomische Nachrichten, 2005X-ray observations (e.g. Fukazawa et al. 1998) show that the Intracluster Medium (ICM) contains metals with abundances ~ 0.2 - 0.3 Z ⊙. Since heavy elements are produced mainly in stars of cluster galaxies, they must have been transported into the intracluster space.
Baumgartner, Verena +1 more
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Inhomogeneous chemical enrichment of the universe
AIP Conference Proceedings, 2012Elemental and isotopic abundances are the fossils of galactic archaeology. The observed [X/Fe]-[Fe/H] relations in the Galactic bulge and disk and the mass-metallicity relation of galaxies are roughly reproduced with chemodynamical simulations of galaxies under the standard Λ-CDM picture and standard stellar physics.
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Chemical Enrichment of the Interstellar Medium
1991The aim of these lessons is to show that there is evidence for chemical evolution of the interstellar gas, as proven by the spectroscopic analysis of stars of all ages in the solar neighbourhood, of interstellar molecules and of HII regions both in our Galaxy and in external ones.
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Chemical Enrichment of the Early Solar System
2017Meteorites preserved from the birth of the Solar system over 4.5 billion years ago contain the chemical signature of a nearby contemporaneous stellar explosion in the form of short-lived radioisotopes (SLRs) such as Aluminum-26. Yet results from hydrodynamical models of SLR injection into the pre-Solar cloud or disk encounter a common problem: it is ...
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