This paper deals with the scale development of a prototype of a clavicle from tagua plant, which was subjected to mechanical testing and in vitro biocompatibility tests in this part of the work emphasizes the biocompatibility tests performed. The biocompatibility of a biomaterial depends on various factors such as their surface characteristics, its structural composition and the coatings used on them. The analysis of the biocompatibility of the biomaterial from tagua plant developed by in vitro assays using cultured cell line HOS from human osteosarcoma cells were cultured in RPMI 1640 supplemented with 10% fetal of tagua. Biomaterial samples were subjected to evaluate cell proliferation by microscopic counting in a Neubauer chamber at different times, different concentrations of bone powder allowed to evaluate the cytotoxicity by the addition of MTT and reading in spectrophotometer; als...

This paper deals with the scale development of a prototype of a clavicle from tagua plant, which was subjected to mechanical testing and in vitro biocompatibility tests in this part of the work emphasizes the biocompatibility tests performed. The biocompatibility of a biomaterial depends on various factors such as their surface characteristics, its structural composition and the coatings used on them. The analysis of the biocompatibility of the biomaterial from tagua plant developed by in vitro assays using cultured cell line HOS from human osteosarcoma cells were cultured in RPMI 1640 supplemented with 10% fetal of tagua. Biomaterial samples were subjected to evaluate cell proliferation by microscopic counting in a Neubauer chamber at different times, different concentrations of bone powder allowed to evaluate the cytotoxicity by the addition of MTT and reading in spectrophotometer; als...

The present work deals with the proposed treatment scheme for the recovery of PVC and PET using mineral processing operations such as: size reduction. Separation by dense means, alkaline treatment and flotation. The results achieved at the laboratory level indicate that 95% of PVC and 97% of PET can be recovered from the selected sample of plastic containers collected in a residual sector of the city of Bucaramanga, Colombia.

The present work deals with the proposed treatment scheme for the recovery of PVC and PET using mineral processing operations such as: size reduction. Separation by dense means, alkaline treatment and flotation. The results achieved at the laboratory level indicate that 95% of PVC and 97% of PET can be recovered from the selected sample of plastic containers collected in a residual sector of the city of Bucaramanga, Colombia.

El hombre en sus distintos procesos productivos ha generado modificaciones al ambiente. La minería metalúrgica no se exime de esto, ya que muchos de los residuos producidos, en especial los efluentes, no cuentan con ningún tipo de tratamiento antes de ser vertidos. El objetivo de la investigación fue evaluar la eficiencia de remoción del Cu, Fe y Pb del efluente minero-metalúrgicos a escala de laboratorio mediante la aplicación de un filtro bioadsorbente con fibras lignocelulósicas (cáscaras de plátano, coco y naranja). Se diseñó 10 filtros compuestos por cáscaras de plátano, coco y naranja, en diferentes proporciones (siendo 100 gr el 100 %), según lo establecido mediante el Diseño de mezclas Simplex Lattice, con tres metales a remover (Cu, Fe y Pb). Se trabajó a un pH de 7.3, tiempo de contacto de 3 horas y tamaño de partícula de 0.250 mm, en todos los tratamientos. ...