Descripción: “...We conclude that the introduction of a subgroup of cows in estrus at the time of implant removal in a group of cows synchronized, significantly affect the made mounts and received smelling, but did not affect the presentation or the duration of estrus.Key words: Estrus synchronization, homosexual behavior, temporary interruption of suckling, made mounts. ...”

Descripción: “...The world economy presents an abrupt and prolonged slowdown that will affect low- and middle-income countries more strongly. ...”

Descripción: “...The experience on the field shows that it may have trouble in the specifications in the models when interactions in the attributes or effects of variables not properly affect individual choices. The application demonstrates that subjective perceptions are strongly associated with a mode of transportation that significantly affect the choice.Sumário: São freqüentes os casos nos quais expoem-se avaliar opções para o melhoramento no nível de servicio dum sistema de transporte no contexto interurbano, este é o caso do corredor do Magdalena Medio em Colômbia, onde há três modos em interacção: viário, fluvial e ferroviário. ...”

Descripción: “...Thus, we generated a variable  to classify soil with a comprehensive approach called  First Principal  Component (PC1), which  explained 78% of the variation  found in the data of the properties  that affect specifically crop production. PC1 proved to be a regionalized variable and interpola- ted via Kriging on the map of the farm. ...”