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IGNÁCIO Rangel viveu intensamente a eclosão e a primeira etapa das transformações da segunda revolução industrial no Brasil, com o aparelhamento do governo central como condutor desse processo, e com sua subseqüen...

La novela desde 1936 se convirtió en un texto de consulta ineludible desde su publicación hasta la fecha, fundamentalmente debido a dos virtudes especialmente apreciables en un texto de estas características: exhausti...

Firmados en su mayoría por especialistas con inserción en la academia estadounidense, los artículos compilados por Ignacio Sánchez Prado en América Latina en la “literatura mundial” componen un campo de debate d...

Materias / palabras clave: Engineering technology; Cuba; Chemistry; Ingeniería Quíimica; Ingenieria Quimica

Phosphorus (P) is an essential mineral nutrient for plants, playing central roles in development, growth, and environmental responses. In the soil, P is available in the form of inorganic phosphate (Pi), which, once inco...

PREMISE OF THE STUDY: Plants preserved in different fossil modes provide complementary data concerning the paleobiology and evolutionary relationships among plant groups. New material from the Early Jurassic of Patagonia...

A new species of Uristes Dana, 1849 (Uristidae) collected from shallow waters in the Beagle Channel, Argentina, is described and illustrated. Uristes yamana n. sp., the third species of this genus reported for the Magell...

Se describe en detalle un nuevo estípite petrificado de Millerocaulis Erasmus ex Tidwell emend. Vera, colectado en afloramientos de edad aptiana de la Formación Cerro Negro en Isla Livingston (Antártida). Este espéci...

One of the most evident costs in cow farming is the identification of the animals. Classic identification processes are labour-intensive, prone to human errors and invasive for the animal. An automated alternative is an ...

We have developed three methods for the automatic picking of first breaks that can be used for marine, dynamite, or vibroseis shot records: a modified Coppens´s method, an entropy-based method, and a variogram fractal-d...

Entre las grandes cosas que tiene la vida universitaria, la mejor es que uno empieza a conocer personas de otras ciudades y otros países. Viajé una sola vez a Florianópolis con propósitos académicos; fue cuando dimo...

Drier conditions have been observed in Northern Patagonia, Argentina, in the last decades, affecting the pastoralism production system. In this context, two laws were promoted to foster goat and sheep production. This re...

A set of coupled Brownian motors—resulting from a noise-induced phase transition generated through an entropic mechanism, and formerly studied in mean-field approximation—is numerically integrated by Heun’s method....

Uno de los principales objetivos de la conquista y colonización españolas del norte argentino fue el de comunicar las sedes del poder central en el Perú y Alto Perú con el puerto de Buenos Aires a través de redes de...

La determinación del sexo es uno de los temas principales de la antropología forense. La pelvis es el hueso más dimórfico del esqueleto humano, pero su fragilidad hace que no siempre esté presente en los contextos f...

Interannual changes in precipitation cause significant effects on the Pacific watersheds of South America. Large rivers flowing to the Atlantic Ocean as the Paraná and Uruguay are also influenced by ENSO-triggered flood...

El maíz representa una base fundamental para la alimentación humana además de su importancia socio-económica y cultural. En regiones extra-pampeanas como la región del NOA, con un régimen monzónico, la fecha de si...

This article presents an agent-based model designed to explore the development of cooperation in hunter-fisher-gatherer societies that face a dilemma of sharing an unpredictable resource that is randomly distributed in s...

Aims Deleterious effects of metabolic syndrome (MS) on bone are still controversial. In this study we evaluated the effects of a fructose-induced MS, and/or an oral treatment with metformin on the osteogenic potential of...

Ante la posibilidad del retorno de sequías por la manifestación del evento de La Niña, los distintos paisajes de la provincia de Corrientes se encuentran expuestos a sufrir nuevamente episodios de incendios vinculados...

As the Buenos Aires Province coastline is dominated by a longshore transport from south to north, obstructions performed at the beginning of the 20th century originated the width reduction of some beaches. Fields of groi...

Coastal cities have particular spatial urbanization trends conditioned by the dominant activities, meaning tourism, fishing or commerce. Notwithstanding that, there are other issues or restrictions that also conditioned ...

The seed cone Telemachus is known from several Triassic localities in Gondwana. New specimens from two localities in Antarctica provide additional information about the type species, Telemachus elongatus, based on detail...