Buscar
Mostrando ítems 1-8 de 8
Artículo
Glutathione biosynthesis in Arabidopsis trichome cells
(National Academy of Sciences, 2000)
In Arabidopsis thaliana, trichome cells are specialized unicellular structures with uncertain functions. Based on earlier observations that one of the genes involved in cysteine biosynthesis (Atcys-3A) is highly expressed ...
Artículo
Effect of clays and metal containers in retaining Sm3+ and ZrO2+ and the process of reversibility
(Walter de Gruyter, 2014)
Knowledge and understanding about radionuclides retention processes on the materials composing the engineered barrier (clay mineral and metallic container waste) are required to ensure the safety and the long-term performance ...
Artículo
Monolayer arrangement of fatty hydroxystearic acids on graphite: Influence of hydroxyl groups
(Elsevier, 2013)
Previous studies have indicated that long-chain linear carboxylic acids form commensurate packed crystalline monolayers on graphite even at temperatures above their melting point. This study examines the effect on the ...
Artículo
Study of lanthanum local structure in montmorillonite
(Japan Society of Applied Physics, 1993)
The local structure of the interlamellar lanthanide ions in montmorillonite upon heating is studied. The analysis of the EXAFS data has been carried out using two model environments, that of La3+ aquocomplex and that of ...
Artículo
Interaction of hydrated cations with mica-n (n = 2, 3 and 4) surface
(American Chemical Society, 2014)
High charged swelling micas, with layer charge between 2 and 4, have been found to readily swell with water, and complete cation exchange (CEC) can be achieved. Because of their high CEC, applications like radioactive ...
Artículo
Hydration properties of synthetic high-charge micas saturated with different cations: An experimental approach
(Walter de Gruyter, 2013)
An understanding of the interaction mechanisms between exchangeable cations and layered silicates is of interest from both a basic and an applied point of view. Among 2:1 phyllosilicates, a new family of swelling high-charge ...
Artículo
Structural and kinetic study of phase transitions in LaYSi 2O 7
(Elsevier, 2012-08)
Phase transitions in LaYSi 2O 7 have been investigated as a function of temperature using XRD, NMR and TEM. Previously described empirical crystal structure guidelines based on average cation radius in rare-earth RE 2Si ...
Artículo
Structural elucidation of Β-(Y,Sc) 2Si 2O 7: Combined use of 89Y MAS NMR and powder diffraction
(International Union of Crystallography, 2011-08)
Although the structures of pure Sc2Si2O7 and Β-Y 2Si 2O 7 have been described in the literature using the C2/m space group, 29Si magic angle spinning (MAS) NMR measurements of the intermediate members of the Sc 2Si 2O 7-Β- ...