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Mostrando ítems 21-30 de 164
Caracterización química y actividad biológica de aceites esenciales extraídos de especies de la familia de asteraceae
(Universidad Nacional de la Patagonia San Juan Bosco, 2015)
En la actualidad ha crecido la necesidad de nuevas opciones para el control de plagas debido a la restricción del uso de insecticidas orgánicos sintéticos y a la resistencia que han desarrollado ciertos insectos. El uso ...
Decoupling of soil nutrient cycles as a function of aridity in global drylands
(Springer Nature, 2013-10-30)
The biogeochemical cycles of carbon (C), nitrogen (N) and phosphorus (P) are interlinked by primary production, respiration and decomposition in terrestrial ecosystems1 . It has been suggested that the C, N and P cycles ...
Hierarchical linear mixed models in multi-stage sampling soil studies
(Springer, 2013-06)
The issue of variances of different soil variables prevailing at different sampling scales is addressed. This topic is relevant for soil science, agronomy and landscape ecology. In multi-stage sampling there are randomness ...
Improving Estimation of Specific Surface Area by Artificial Neural Network Ensembles Using Fractal and Particle Size Distribution Curve Parameters as Predictors
(Springer, 2013)
Specific surface area (SSA) is one of the principal soil properties used in modeling soil processes. In this study, artificial neural network (ANN) ensembles were evaluated to predict SSA. Complete soil particle-size ...
Curved fossil bee cells as tools for reconstructing the evolutionary history and palaeogeographical distribution of Diphaglossinae (Apoidea, Colletidae)
(Palaeontology, 2014-03)
The new ichnospecies Celliforma curvata is described to include curved fossil bee cells from Argentina, Uruguay and the USA. The upper part of the cell (neck) of the new ichnospecies is curved, and accordingly, it can be ...
Brucella suis in armadillos (Chaetophractus villosus) from La Pampa, Argentina
(Elsevier, 2014-06-04)
Statistical mechanics of phase-space curves
(Elsevier, 2014)
El 'espacio Tel Quel' y la configuración de una discursividad vacilanteThe Tel Quel space and the construction of an elusive discursivity
(Universidad Nacional del Comahue. Centro Universitario Regional Zona Atlántica Argentina, 2013-11-06)
En marzo de 1960 apareció, en Francia, el primer número de la revista Tel Quel. Aunque es una publicación que ha tenido innegable reconocimiento y que agrupó a intelectuales de reconocida trayectoria, se puede afirmar que ...
Odette Casamayor-Cisneros. Utopía, distopía e ingravidez. Reconfiguraciones cosmológicas en la narrativa postsoviética cubana. Madrid-Frankfurt am Main: Iberoamericana – Vervuert, 2013, 360 p.
(Asociación de Estudios Latinoamericanos Katatay, 2014-09)
American & foreign power in Argentina and Brazil (1926-65)
(Economic History Society of Australia and New Zealand : John Wiley & Sons Australia, Ltd, 2014-07)
The article analyses the evolution, strategies, and position of the American & Foreign Power company (AFP) in Argentina and Brazil from the mid-1920s to the second post-war period. We compare the economic performance ...