Zobrazeno 1 - 10
of 681
pro vyhledávání: '"Isotopes of magnesium"'
Autor:
Vitaly K. Koltover
Publikováno v:
Russian Chemical Bulletin. 70:1633-1639
Magnetic isotope effects have been recently discovered in living nature. They were observed for the first time in experiments on cells enriched with various magnesium isotopes, magnetic 25Mg or non-magnetic ones. A catalytic effect of the magnetic is
Publikováno v:
Iraqi Journal of Physics. 19:82-93
Nuclear structure of 29-34Mg isotopes toward neutron dripline have been investigated using shell model with Skyrme-Hartree–Fock calculations. In particular nuclear densities for proton, neutron, mass and charge densities with their corresponding rm
Publikováno v:
Geochimica et Cosmochimica Acta
Geochimica et Cosmochimica Acta, Elsevier, 2020, 292, pp.94-114. ⟨10.1016/j.gca.2020.09.024⟩
Geochimica et Cosmochimica Acta, Elsevier, 2020, 292, pp.94-114. ⟨10.1016/j.gca.2020.09.024⟩
Magnesium (Mg) isotopes fractionate during rock/mineral weathering and leaching, secondary mineral neoformation, adsorption/desorption, and plant-related Mg recycling, but the mechanisms and extent of fractionation are not well understood. Here, we r
Publikováno v:
Analytical Chemistry. 92:15975-15981
Magnesium isotopic analysis of cerebrospinal fluid (CSF) is a potentially interesting approach for studies on neurodegeneration. However, this type of analysis is challenging because of the invasiveness of the sampling and small sample volume. In thi
Publikováno v:
Geology. 49:253-257
Recent studies have uncovered the potential of Mg isotopes (δ26Mg) for studying past ocean chemistry, but records of such data are still scarce. Dolomite has been suggested as a promising archive for δ26Mg of seawater. However, its enigmatic format
Autor:
Mónica Sánchez-Román, Antonio Sanchez-Navas, Xin-Yang Chen, Christopher S. Romanek, William R. Sanchez, Fang-Zhen Teng
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
Chen, X Y, Teng, F Z, Sanchez, W R, Romanek, C S, Sanchez-Navas, A & Sánchez-Román, M 2020, ' Experimental constraints on magnesium isotope fractionation during abiogenic calcite precipitation at room temperature ', Geochimica et Cosmochimica Acta, vol. 281, pp. 102-117 . https://doi.org/10.1016/j.gca.2020.04.033
Geochimica et Cosmochimica Acta, 281, 102-117. Elsevier Limited
instname
Chen, X Y, Teng, F Z, Sanchez, W R, Romanek, C S, Sanchez-Navas, A & Sánchez-Román, M 2020, ' Experimental constraints on magnesium isotope fractionation during abiogenic calcite precipitation at room temperature ', Geochimica et Cosmochimica Acta, vol. 281, pp. 102-117 . https://doi.org/10.1016/j.gca.2020.04.033
Geochimica et Cosmochimica Acta, 281, 102-117. Elsevier Limited
Magnesium (Mg) isotopes in carbonate minerals are a useful proxy for paleoclimate studies, but interpretations are often limited by an inadequate understanding of the various factors controlling Mg isotopic fractionation during carbonate formation. P
Publikováno v:
Geochimica et Cosmochimica Acta. 278:110-121
Continental crust loses Mg by lower crustal foundering and chemical weathering to become its intermediate-silicic composition. Both processes should preferentially retain heavy Mg isotopes in the crust, yet the estimated Mg isotopic ratio for the bul
Publikováno v:
Geochimica et Cosmochimica Acta. 278:244-260
This study reports that substantial chemical weathering occurs at subzero temperatures in ice-and-salt-rich permafrost in the McMurdo Dry Valleys, Antarctica. Chemical weathering is documented in a 30.0-m core collected in Beacon Valley by measuring
Publikováno v:
Biophysics. 65:416-425
The effects of different magnesium and zinc isotopes on the enzyme activity of myosin subfragment-1 have been explored. The rate of the enzymatic ATP hydrolysis in reaction media enriched with the magnetic isotope, 25Mg, is twice as high as it is in
Publikováno v:
Journal of Analytical Atomic Spectrometry. 35:1080-1086
We have prepared a large volume of pure, concentrated and homogeneous magnesium standard solution (GSB-Mg) to be used as a secondary reference standard by the magnesium isotope community. This new standard solution can also be used for quality assura