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Methods of mechanical dispersion for determining granulometric fractions using four dispersant solutions
(Universidad Nacional de Colombia, 2015-05-01)
Sieve analysis studies depend on obtaining suspensions of fully-dispersed and stable samples to facilitate the quantification of the fractions of soil aggregates. The aim of this study was to compare the percentage of ...
Efectos de la dispersión sobre la reconstrucción por árboles reconciliados y el patrón de distribución de los subgéneros neotropicales de simulium (diptera:simuliidae)
(Universidad Nacional de Colombia, 2001-01-01)
El análisis de los patrones biogeográficos de los subgéneros neotropicales de Simulium (Diptera:Simuliidae), sugiere que los eventos de dispersión desde Mesoamerica a la región Pacífica y del SE de Brasil al Cerrado pueden ...
Pulsating Flow of an Ostwald-De Waele Fluid between Parallel Plates
(MDPI, 2020)
The flow between two parallel plates driven by a pulsatile pressure gradient was studied analytically with a second-order velocity expansion. The resulting velocity distribution was compared with a numerical solution of ...
A novel dispersion monitoring technique in w-band radio-over-fiber signals using clustering on asynchronous histograms
(Universidad Nacional de Colombia - Facultad de Ingeniería, 2014-11-21)
Radio over Fiber (RoF) systems have been proposed as a promising solution for transmitting radiofrequency signals at high data rates over long distances. To reach data rates in the Gbps range, studies indicate using the ...
DISPERSIÓN RAMAN DE ELECTRONES EN PUNTOS CUÁNTICOS PIRAMIDALES
(Fondo Editorial EIA - Universidad EIA, 2016-05-16)
En este artículo se investiga teóricamente la dispersión Raman de electrones en puntos cuánticos piramidales. Se reporta la sección transversal diferencial Raman electrónica de Raman usando los estados cuánticos determinados ...
Carbon nanotube dispersion for in-vitro applications
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2017-10-01)
Carbon nanotubes (CNTs) have gained popularity due to their many characteristics which make them the promising material for biomedical applications. A major challenge when working with CNTs is the difficulty to distribute ...
Existence and regularity of 1D-solitons for a hyperelastic dispersive model
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Matemáticas, 2015-07-01)
We show the existence, regularity and analyticity of one-dimensional solitons for a dispersive type equation that models the deformations of a hyperelastic compressible plate. We follow a variational approach by characterizing ...
Palmitic acid and hexadecylamine molecules assdsorbed on titania surface in hybrid composites. Effect of surfactants using density functional theory
(Elsevier B.V., 2017)
© 2017 Elsevier B.V.A complete theoretical characterization of the factors involved in the stabilization of hybrid laminar composites is reported, with the purpose of understanding the main interactions involved in the ...