Results 81 to 90 of about 39,764 (254)

Differentiation of argentine propolis from different species of bees and geographical origins by UV spectroscopy and chemometric analysis [PDF]

open access: yes, 2018
Bees collect vegetal resins that they mix with their wax and mechanical impurities to elaborate propolis, whose chemical composition is complex and variable depending on botanical/geographical origin, type of bee, time of year when it was produced and ...
Borelli, Romina   +7 more
core   +2 more sources

The institutionalization of “serial personalization” in Argentina's Peronist Party, 1983–2023

open access: yesSocial Science Quarterly, Volume 105, Issue 3, Page 486-499, May 2024.
Abstract Objective The purpose of this article is to explain how Peronism, an allegedly personalist party, has managed to institutionalize its internal power struggles and its succession procedures since democratization in 1983. Methods The authors employ the common conceptual framework developed for this special issue.
Andres Malamud, Leiv Marsteintredet
wiley   +1 more source

Políticas de inclusión digital en la formación docente

open access: yesRevista del CISEN, 2017
En este artículo nos proponemos abordar algunas tensiones generadas por el mandato instituyente de las Políticas de Inclusión Digital en la Formación Docente.
Ceilia Evangelina Melendez   +2 more
doaj  

Caracterización tecnológica de cerámicas aguada Portezuelo (ca. 600-900 dc) del Valle de Catamarca (Catamarca, Argentina)

open access: yes, 2023
The Aguada Portezuelo pottery style denotes a complex production process, with an iconography that stands out for its polychromy within the pre-Hispanic pottery of northwest Argentina, with investigations that were characterized by studying the macroscopic aspects, with few interventions dedicated to the analysis of pastes.
Martinez Carricondo, Marina Gala   +3 more
openaire   +1 more source

Petrología cerámica comparativa y análisis composicional de las pinturas por MEB-EDS de estilo Aguada Portezuelo (ca. 600-900 DC) en el valle de Catamarca (Noroeste Argentino)

open access: yesEstudios Atacameños
La cerámica de estilo Aguada Portezuelo del Noroeste Argentino posee un amplio repertorio de técnicas de acabado empleadas principalmente en los tratamientos de superficie y decoración.
Guillermo A. De La Fuente   +3 more
doaj   +1 more source

Ichthyological ecoregions of Argentina [PDF]

open access: yes, 2002
The Argentine Republic is situated in the southernmost portion of the American continent, occupying over 2,785,600 km2 not including the Antarctic territory. The country ranges from subtropical areas (21º46’S) to subantarctic regions (55º03’S), extending
López, Hugo Luis   +2 more
core  

New records and geographic distribution map of Bothropoides diporus Cope, 1862 (Reptilia: Viperidae) [PDF]

open access: yes, 2011
We provide two new records of Bothropoides diporus for Neuquén province, northern Patagonia, Argentina. Both records are the second and third for this species in this province.
Avila, Luciano Javier   +2 more
core   +2 more sources

The Raman spectrum of florencite‐(REE) [REEAl3(PO4)2(OH)6]: An integrated experimental and computational approach

open access: yesJournal of Raman Spectroscopy, Volume 55, Issue 3, Page 394-405, March 2024.
Experimental and computational Raman spectrum of florencite Abstract Florencite is a hydrous light rare‐earth elements (LREE) aluminium phosphate [REEAl3(PO4)2(OH)6], that amongst the REE‐rich minerals is quite common. The main end‐members are Ce‐, La‐ and Nd‐rich terms that were found in several genetic environments.
Stefano Ghignone   +8 more
wiley   +1 more source

Repositorios digitales y software open source

open access: yesRevista Iberoamericana de Tecnología en Educación y Educación en Tecnología, 2015
En la actualidad las universidades se encuentran en constante evolución, fruto de la transformación generada por la sociedad de la información y el conocimiento, donde la transversalidad son las Tecnologías de la Información y Comunicación (TIC), que ...
María Vanesa Doria   +2 more
doaj  

Resonances and paradoxes of education. Notes to speak on its behalf

open access: yesPraxis Educativa, 2018
In this work a set of notes that aim to dialogue with some of the questions left by the authors of the Manifesto are presented. Our reflective journey starts from considering that the demand formulated by Biesta and Säfström implies returning to a ...
Jose Alberto Yuni, Claudio Ariel Urbano
doaj   +1 more source

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