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Dive into the research topics where Alejandro Ramírez is active.

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Featured researches published by Alejandro Ramírez.


Neurocirugia | 2014

Transferencia ipsilateral de la raíz C7 del plexo braquial: A propósito de un caso y revisión de la literatura

Enrique Vergara-Amador; Alejandro Ramírez

The C7 root in brachial plexus injuries has been used since 1986, since the first description by Gu at that time. This root can be used completely or partially in ipsilateral or contralateral lesions of the brachial plexus. A review of the literature and the case report of a 21-month-old girl with stab wounds to the neck and section of the C5 root of the right brachial plexus are presented. A transfer of the anterior fibres of the ipsilateral C7 root was performed. At 9 months there was complete recovery of abduction and external rotation of the shoulder.


Chemical Engineering Science | 2006

Simulation of nitrogen sorption processes in materials with cylindrical mesopores: Hysteresis as a thermodynamic and connectivity phenomenon

Alejandro Ramírez; Ligia Sierra


Chemical Engineering Science | 2011

A kinetic Monte Carlo approach to diffusion in disordered nanoporous carbons

Alejandro Ramírez


Microporous and Mesoporous Materials | 2007

Formation of Si–H groups during the functionalization of mesoporous silica with Grignard reagents

Alejandro Ramírez; Ligia Sierra; Bénédicte Lebeau; J.L. Guth


Revista Colombiana de Química | 2006

SÍNTESIS Y CARACTERIZACIÓN DE FASES ESTACIONARIAS MESOPOROSAS MEDIANTE PRUEBAS CROMATOGRÁFICAS Y RELACIONES CUANTITATIVAS ESTRUCTURA-RETENCIÓN

Alejandro Ramírez; Ligia Sierra; Betty L. López


Dyna | 2017

Efecto de los lixiviados de residuos sólidos en un suelo tropical

Alejandro Ramírez; Yamile Valencia González; Luis Augusto Lara Valencia


Boletín de Ciencias de la Tierra | 2017

Variaciones geotécnicas en un suelo tropical causadas por los lixiviados de residuos sólidos urbanos: escala laboratorial

Alejandro Ramírez; Yamile Valencia González; Luis Augusto Lara Valencia


instname: Universidad de Antioquia | 2011

Estudio de las relaciones entre parámetros estructurales de sistemas porosos desordenados y la difusividad efectiva mediante Monte Carlo Cinético

Alejandro Ramírez; John Jairo Castañeda; Elizabeth Pabón Gelves


Revista Facultad De Ingenieria-universidad De Antioquia | 2011

Study of the relationships between structural parameters of disordered porous media and effective diffusivity by Kinetic Monte Carlo

Alejandro Ramírez; John Jairo Castañeda; Elizabeth Pabón


Archive | 2011

Estudio de las relaciones entre parámetros estructurales de sistemas porosos desordenados y la difusividad efectiva mediante Monte Carlo Cinético Study of the relationships between structural parameters of disordered porous media and effective diffusivity by Kinetic Monte Carlo

Alejandro Ramírez; John Jairo Castañeda; Elizabeth Pabón; Grupo Ciencia de Materiales

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Ligia Sierra

University of Antioquia

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John Jairo Castañeda

National University of Colombia

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Elizabeth Pabón

National University of Colombia

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Enrique Vergara-Amador

National University of Colombia

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Bénédicte Lebeau

Centre national de la recherche scientifique

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J.L. Guth

Centre national de la recherche scientifique

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