Results 261 to 270 of about 602,274 (295)
Some of the next articles are maybe not open access.
Chemical Durability of Lanthanum‐Enriched Borosilicate Glass
International Journal of Applied Glass Science, 2013The role of lanthanum in the alteration kinetics at different degrees of reaction progress was investigated at 90°C and p H 7 by complementary chemical ( SIMS ), morphological ( SAXS ), and structural (
Molières, Estelle +8 more
openaire +2 more sources
Chemical enrichment in the early galaxy
Astrophysics and Space Science, 2003New, precise abundance data for a large number of elements in a growing sample of extremely metal-poor stars are accumulating from the new 8-m telescopes. Combined with theoretical models, these results advance our understanding of the first generations of stars, whose nucleosynthesis products are fossilised in the oldest stars we see today and thus ...
openaire +1 more source
Chemical Labeling and Enrichment of Histone Glyoxal Adducts
ACS Chemical Biology, 2022Because of their long half-lives and highly nucleophilic tails, histones are particularly susceptible to accumulating nonenzymatic covalent modifications, such as glycation. The resulting modifications can have profound effects on cellular physiology due to the regulatory role histones play in all DNA-templated processes; however, the complexity of ...
Devin M. Ray +6 more
openaire +2 more sources
Chemical Enrichment of the Intra-Cluster Medium
Astrophysics and Space Science, 2003We investigate the metal enrichment of the intra-cluster medium by using a method that combines N-Body simulations and a semi-analytic model (SAM) of galaxy formation. The cluster of galaxies is simulated in a flat, low density universe, with a numerical resolution that allows the detection of substructures in the dark matter background of the cluster.
Cora, S., White, S.
openaire +2 more sources
Theoretical Consideration and Recent Progress of Chemical Enrichment Process for Uranium Enrichment
Journal of Nuclear Science and Technology, 1990Research and development for uranium enrichment by oxidation-reduction chromatography, begun in 1972 despite the prevailing view that a chemical process would require several centuries of operation to attain fuel-grade uranium enrichment and would thus be impractical, led to the establishment of basic process technology permitting attainment of 3 ...
Maomi SEKO +3 more
openaire +1 more source
Energy Consumption of Chemical Uranium Enrichment
Separation Science and Technology, 1987Abstract A quantitative study of chemical separation energy for enriching uranium-235 by the redox chromatography was conducted. Isotope exchange reactions between U4+-UO2 2+ ions in the enrichment column are maintained by the redox reactions. The chemical separation energy is ultimately supplied by hydrogen and oxygen gas for regenerating redox agents.
T. Miyake, K. Takeda, H. Obanawa
openaire +1 more source
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
openaire +1 more source
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
openaire +3 more sources
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
openaire +1 more source
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
openaire +3 more sources