2 research outputs found
Jamming and percolation in anisotropic random sequential adsorption of straight rigid rods on a two-dimensional triangular lattice
Percolation of linear k-mers (also known as rods or needles) is studied through Monte Carlo simulationsand finite size scaling, in the case of anisotropic random sequential adsorption on the triangular latticeof LxL and periodic boundary conditions. The efects on the percolation threshold of both the size k ofthe species and the anisotropy degree have been studied. Extensive numerical work enables theconfirmation of a non-monotonic size dependence of the threshold in the isotropic case, which becomesmonotonic in the nematic limit. Finally, a complete analysis of critical exponents and universality hasbeen done, showing that the percolation phase transition involved in the system is not affected, havingthe same universality class of the ordinary random percolation.Fil: Perino, Ernesto JesĂșs. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - San Luis. Instituto de FĂsica Aplicada "Dr. Jorge AndrĂ©s Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias FĂsico MatemĂĄticas y Naturales. Instituto de FĂsica Aplicada "Dr. Jorge AndrĂ©s Zgrablich"; ArgentinaFil: Matoz Fernandez, D.A.. University of Dundee; Reino UnidoFil: Pasinetti, Pedro Marcelo. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - San Luis. Instituto de FĂsica Aplicada "Dr. Jorge AndrĂ©s Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias FĂsico MatemĂĄticas y Naturales. Instituto de FĂsica Aplicada "Dr. Jorge AndrĂ©s Zgrablich"; ArgentinaFil: Ramirez Pastor, Antonio Jose. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - San Luis. Instituto de FĂsica Aplicada "Dr. Jorge AndrĂ©s Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias FĂsico MatemĂĄticas y Naturales. Instituto de FĂsica Aplicada "Dr. Jorge AndrĂ©s Zgrablich"; ArgentinaXVII Taller Regional de FĂsica EstadĂstica y Aplicaciones a la Materia CondensadaSan LuisArgentinaUniversidad Nacional de San Luis. Facultad de Ciencias FĂsico MatemĂĄticas y Naturales. Instituto de FĂsica Aplicada "Dr. Jorge AndrĂ©s Zgrablich"
REE profiling in basic volcanic rocks after ultrasonic sample treatment and ICPMS analysis with oxide ion formation in ICP enriched with O2
ICP-MS methods, and its variants, had been extensively used to determine REEs due to their lower detection limits, high sensitivity and dynamic linear range. However, spectral interferences caused by oxide and hydroxide ions always represents an issue regardless the type of sample been dealt. In the present work it was described the study of REEs oxides formation with the introduction of an auxiliary line directly to the cyclonic chamber to generate a mix Ar/O2 plasma. Plasma conditions were optimized by studying and selecting the best flow rates to induce the formation of REEs oxides. A new analytical method for REE determination was thus proposed using ICPMS with Ar-O2 mixed plasma to aid the formation of MO ions. This method was validated through CRM analysis and through the analysis of real-world samples. The REE concentrations evaluated and normalized to chondrite REE levels allowed the analysis of basaltic rocks study in terms of their origin.Fil: Verni, Ernesto Ricardo. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - San Luis. Instituto de QuĂmica de San Luis. Universidad Nacional de San Luis. Facultad de QuĂmica, BioquĂmica y Farmacia. Instituto de QuĂmica de San Luis; ArgentinaFil: Londonio, Juan AgustĂn. ComisiĂłn Nacional de EnergĂa AtĂłmica; ArgentinaFil: Bazan, Cristian Roberto. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - San Luis. Instituto de QuĂmica de San Luis. Universidad Nacional de San Luis. Facultad de QuĂmica, BioquĂmica y Farmacia. Instituto de QuĂmica de San Luis; ArgentinaFil: Strasser, Edgardo. Universidad Nacional de San Luis. Facultad de QuĂmica, BioquĂmica y Farmacia. Departamento de QuĂmica. Ărea de QuĂmica AnalĂtica; ArgentinaFil: Perino, Ernesto JesĂșs. Universidad Nacional de San Luis. Facultad de QuĂmica, BioquĂmica y Farmacia. Departamento de QuĂmica. Ărea de QuĂmica AnalĂtica; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Gil, Raul Andres. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - San Luis. Instituto de QuĂmica de San Luis. Universidad Nacional de San Luis. Facultad de QuĂmica, BioquĂmica y Farmacia. Instituto de QuĂmica de San Luis; Argentin