European chickens were introduced into the American continents by the Spanish after their arrival in the 15th century. However, there is ongoing debate as to the presence of pre-Columbian chickens among Amerindians in South ...

This work is formed by the development and implementation of an Educational Product, which by means of a didactic sequence (DS), aimed to address geocentrism, heliocentrism and universal gravitation topics in a less classical ...

First day: Departure from San Juan City by bus, at 8 AM. Arrival at San Rafael City (about 370 km towards the South) in Mendoza Province at lunch time. During the trip by the plain road we can see the Eastern Precordillera ...

Two Early Paleozoic orogenic cycles in the Gondwana margin of NW Argentina were driven by subduction, and interrupted by collision of continental ribbons of Laurentian affinity. Subduction started at the passive margin of ...

One of the most notable seismic sequences in modern times was recorded in May 1960 along the southern Chilean subduction zone. The sequence started on 21 May with the M-w 8.1 Concepcion earthquake; 33 hr later the M-w 9.5 ...

The civil construction management has been taken more attention of civil construction companies in aim alternatives to enhancing theirs management process, main that work with building construction because the growing ...

Courtship and breeding behaviour of anurans is species-specific and defined by vocalisation, although breeding activities are still understudied for many species. Here, we describe the courtship behaviour and unpublished ...

This paper presents a model to estimate the lifetime of degrading infrastructure systems subject to shocks based on the family of Phase-type (PH) distributions. In particular, the paper focuses on damage accumulation when ...

El presidente Uribe y su entorno se la han jugado a fondo en el proceso de negociación con los paramilitares, aunque es demasiado pronto para juzgar resultados que puedan considerarse duraderos. Se invirtió el que todos ...