| Sumário ing.cienc. vol.16 no.31 Medellín jan./jun. 2020 Artigos originais | | | | · The Notions of Center, Commutator and Inner Isomorphism for Groupoids Ávila, Jesús; Marín, Víctor
| | | | · A Survey on Some Algebraic Characterizations of Hilbert’s Nullstellensatz for Non-commutative Rings of Polynomial Type Reyes, Armando; Hernández-Mogollón, Jason
| | | | · Modeling of the Availability of a Repairable Series Structure with two Units Rodríguez-Figueredo, Liliana; Calvache-Archila, Álvaro
| | | | · Dπ -optimal Designs for Heteroscedastic Nonlinear Models: A Robustness Study Patiño-Bustamante, Catalina; López-Ríos, Víctor
| | | | · Design of a Low Cost Control System for an Astronomical Observatory Cuartas-Restrepo, Pablo; Gaviria-Gómez, Natalia; Galvez-Serna, Julian
| | | | · Determination of Kinetic Parameters in the Biosorption of Chromium (VI) in Aqueous Solution Tejada-Tovar, Candelaria; Villabona-Ortíz, Angel; Ortega-Toro, Rodrigo
| | | | · Correlation of Morphometric Variables for Landslides in the Combeima River Basin, Colombia Santa-Ramírez, Gabriel; Cuevas-González, Juan; Leal-Villamíl, Julián; Muñoz-Ramos, Jader
| | | | · Pore Structure Characteristics and Gas Storage Potential of the Cretaceous La Luna Formation, Middle Magdalena Valley Basin, Colombia Casadiego-Quintero, Efraín; Ríos-Reyes, Carlos Alberto
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