Results 91 to 100 of about 33,743 (224)

Argentinean copper concentrates: structural aspects and thermal behaviour [PDF]

open access: yes, 2013
In Argentina, there are many sources of copper concentrates. Some of them are currently in operation, while others are in the exploration stage. All copper concentrates produced are exported to other countries for copper refinement and to create various ...
Bazan Brizuela, Vanesa Lucia   +3 more
core   +1 more source

Is it all Phacelia pinnatifida? Molecular delimitations and taxonomic revision of Phacelia sect. Glandulosae in South America based on ddRADseq

open access: yesTAXON, Volume 73, Issue 6, Page 1437-1459, December 2024.
Abstract Phacelia sect. Glandulosae, with ca. 62 taxa, is the most diverse of the 11 sections of the genus Phacelia (Hydrophyllaceae). The family is largely restricted to North and Central America, but the genus Phacelia has an amphitropical distribution with nine species reported from western South America, five of which have been assigned to P. sect.
Maria‐Anna Vasile   +3 more
wiley   +1 more source

Estrategias docentes en propuestas didácticas para EGB

open access: yesRevista Iberoamericana de Educación, 2005
La epistemología de los docentes está presente en todos los momentos; sus concepciones acerca de la enseñanza, los contenidos, los alumnos, la realidad circundante los hace seleccionar y elaborar recortes de los mismos ligados a los supuestos que tienen ...
María del Valle Coronel   +1 more
doaj  

Spatio-temporal risk assessment models for Lobesia botrana in uncolonized winegrowing areas [PDF]

open access: yes, 2019
The objective of this work was to generate a series of equations to describe the voltinism of Lobesia botrana in the quarantine area of the main winemaking area of Argentina, Mendoza.
Aceñolaza, Pablo Gilberto   +2 more
core   +2 more sources

Lithium and water: Hydrosocial impacts across the life cycle of energy storage

open access: yesWIREs Water, Volume 11, Issue 6, November/December 2024.
Impacts, benefits, and burdens on water and society throughout the life cycle of lithium. Abstract As a key ingredient of batteries for electric vehicles (EVs), lithium plays a significant role in climate change mitigation, but lithium has considerable impacts on water and society across its life cycle.
James J. A. Blair   +7 more
wiley   +1 more source

Physaria okanensis (Brassicaceae), a New Species from Catamarca, Argentina

open access: yesNovon: A Journal for Botanical Nomenclature, 2009
Physaria okanensis Al-Shehbaz & Prina (Brassicaceae), a new species from Catamarca, Argentina, is described and illustrated. It is distinguished from the five other South American species of Physaria (Nuttall) A. Gray by its densely pulvinate habit and few-flowered scapes. It resembles the non-pulvinate, often non-scapose P. pygmaea O'Kane & Al-Shehbaz,
Ihsan A. Al-Shehbaz, Anibal O. Prina
openaire   +2 more sources

La Cerámica aguada en las tierras altas (Puna Meridional Argentina, Catamarca)

open access: yesEstudios Atacameños, 2020
This paper presents a technological and decorative study of a ceramic sample identified with the Aguada typology from the Casa Chávez Montículos site in Antofagasta de la Sierra, (Puna Meridional Argentina). The characteristics of this pottery, result of the proposed analysis, will be compared with similar attributes of the pieces coming from the ...
Martín Tomás Casanova   +2 more
openaire   +4 more sources

Redesigning mineral regimes to strengthen the environmental rule of law: A case study on lithium in brines

open access: yesReview of European, Comparative &International Environmental Law, Volume 33, Issue 3, Page 633-646, November 2024.
Abstract This article aims to contribute to aligning the legal regimes for energy transition minerals with sustainability and justice. The focus of the article is on effectively embedding the human right to a healthy environment into the design of these regimes.
Ana Elizabeth Bastida
wiley   +1 more source

Water privatisation and restructuring in Latin America, 2007 [PDF]

open access: yes, 2007
A detailed survey of developments in water in south America, including the retreat of the multinationals, the development of public sector alternatives, and persistent problems with compensation claims and development bank ...
Hall, David, Lobina, Emanuele
core  

Mitochondrial phylogeography and demographic history of the Vicuña: implications for conservation [PDF]

open access: yes, 2007
The vicuña (Vicugna vicugna; Miller, 1924) is a conservation success story, having recovered from near extinction in the 1960s to current population levels estimated at 275 000.
A Prieto   +60 more
core   +1 more source

Home - About - Disclaimer - Privacy