1794-1237 1794-1237 S1794-12372018000200099 10.24050/reia.v15i30.1154 Colombia Colombia 00 12 2018 00 12 2018 15 30 99 111

2009 2015 68 58-73 2007 1 2009 33 1 1 38-44 ASTM D882-02 2002 14 1-10 2012 2012 Medellin 2015 Guayaquil, Ecuador 2016 2 1-10 2013 a 695-707 2013 b 1 1 42-50 L. N. in C. Science 2013 c 122-32 2016 133 1 1 2007 18 5 5 1361-6 2015 11 3 3 748-68 2013 255-62 2011 46 4 4 245-66 2011 35 6 6 71-9 2014 61 39-51 2015 66 320-9