Rev. Lasallista Investig.

Table of contents
Rev. Lasallista Investig. vol.9 no.1 Caldas Jan./June 2012

Editorial

	· Objeciones al uso de modelos animales Vallejo Rendón, Aníbal · text in Spanish · Spanish ( pdf )

Original articles

	· *Effect of Dimethylformamide on the post-vitrification feasibility of in vitro* produced bovine embryos** Giraldo Giraldo, John Jairo; Gómez Oquendo, Jorge; Vásquez Araque, Neil · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Effect of the somatotropin's polymorphism (BGH) on the linear characteristics of the Holstein cows Echavarría Valencia, Diana Carolina; Echeverri Zuluaga, José Julián · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Cadmium determination in raw milks by the use of an amperometric biosensor Carvajal Acevedo, Stephanie; Rodríguez Loaiza, Diana Catalina; Peñuela Mesa, Gustavo · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· *Effects of periphyton on the physical and chemical parameters of water in ponds with tilapia Oreochromis niloticus* and bocachico Prochilodus magdalenae polycultures** Muñoz Duque, Sebastián Eduardo; García González, José Jaime; Correa Londoño, Guillermo; Atencio García, Víctor Julio; Pardo Carrasco, Sandra Clemencia · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Perception of health harm and usefulness of protection measures in people occupationally exposed to mercury in gold mining Muñoz-Vallejo, Luisa Fernanda; García-Ardila, Luisa Fernanda; Rodríguez-Gázquez, María de los Ángeles · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Synthesis and characterization of CuCr₂O₄ spinel type pigments, by the use of the in solution auto combustion method Chavarriaga Miranda, Edgar Andrés; Betancur Granados, Natalia; Montoya, Juan Fernando; Restrepo Baena, Oscar Jaime · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Loading improvement in the dispatch of a distribution center by the use of response surfaces Gómez Montoya, Rodrigo Andrés; Correa Espinal, Alexander Alberto · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Associations between the maturity of knowledge management and innovative performance: organization and people, and interpretation Arias Pérez, Jose Enrique · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Longitudinal research of the study habits in a cohort of university students Montes Iturrizaga, Iván · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Quality of sleep and life among middle age and elderly women from the Medio Araguaia Valley, Legal Amazon Neto Paniago, Emidio; KusanoBucalen Ferrari, Carlos · text in Portuguese · Portuguese ( pdf )

Topic review articles

	· *Charactyeristics of the viruses related to virosis of tamarillo (Solanum betaceum)in Colombia* Jaramillo Zapata, Margarita María; Álvarez, John Alejandro; Marín Montoya, Mauricio · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

Original articles

	· Oxidative stress in cryopreserved equine sperm Restrepo Betancur, Giovanni; Pizarro López, Edison; Alberto Rojano, Benjamín · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

Reflection article

	· The novelty of human knowledge: perennial source for innovation Irizar, Liliana Beatriz · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Organizational environment and human development Castaño González, Esther Julia · abstract in Spanish · text in Spanish · Spanish ( pdf )

	· Bioethics in the scientific experiments with animáis: a matter of regulation or a human attitude Garcés Giraldo, Luis Fernando; Giraldo Zuluaga, Conrado · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )