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Mostrando ítems 1021-1030 de 2848
Forgeries and archaeology: Richard latcham, the precolumbian writing, and the guayacÁn pirates (2020)
(Museo Chileno de Arte Precolombino, 2020)
From the supposed discovery of pre-Hispanic writing by ar-chaeologist Ricardo E. Latcham, this article discusses the role of archaeological forgeries in the creation of knowledge and narratives about the past in 1929 Latcham ...
Efficiency of public expenditure in higher education. Chile 1990-2015 (2020)
(Universidad del Zulia, 2020)
Empirically determining the efficiency of public spending on higher education in Chile with respect to the formation of advanced human capital is a challenge. The long-term relationship between the variables public spending ...
Controlling domain wall chirality by combining hard and soft magnetic materials in planar nanostructures with wire-ring morphology (2020)
(Elsevier B.V., 2021-01)
Vortex domain walls (DWs) are characterized by their chirality, an important property that needs to be controlled for the use of such walls in potential technological applications. In this work we explore a wire-ring ...
The Chemical Compositions of Essential Oils Derived from Cryptocarya alba and Laurelia sempervirens Possess Antioxidant, Antibacterial and Antitumoral Activity Potential (2020)
(NLM (Medline), 2020-11-28)
Cryptocarya alba (Peumo; CA) and Laurelia sempervirens (Laurel; LS) are herbs native to the Chilean highlands and have historically been used for medicinal purposes by the Huilliches people. In this work, the essential ...
Using the turnover time index to identify potential strategic groundwater resources to manage droughts within continental spain (2020)
(MDPI AG, 2020-11-22)
The management of droughts is a challenging issue, especially in water scarcity areas, where this problem will be exacerbated in the future. The aim of this paper is to identify potential groundwater (GW) bodies with reduced ...
Differences in circulating corticosterone levels associated with elevation of breeding sites in Rufous-collared Sparrows Zonotrichia capensis (2020)
(Springer Science and Business Media Deutschland GmbH, 2020-12-03)
To facilitate breeding and any energetically costly activity, individuals of the same species can substantially vary their circulating corticosterone (CORT) levels to cope with local environmental conditions at different ...
Isolable 1-Butene Copper(I) Complexes and 1-Butene/Butane Separation Using Structurally Adaptable Copper Pyrazolates (2020)
(Wiley-VCH Verlag, 2020-11-26)
Non-porous small molecule adsorbents such as {[3,5-(CF3)2Pz]Cu}3 (where Pz=pyrazolate) are an emerging class of materials that display attractive features for ethene−ethane separation. This work examines the chemistry of ...
Teacher competences in online education in time of COVID-19: Public Universities of Honduras (2020)
(Universidad del Zulia, 2020)
It is the higher education center that governs the task of knowledge management and promotion, in order to develop professionals, which is why the work of the teacher is prevalent in their training. This article analyzes ...
The bonding situation in heteromultimetallic carbonyl complexes (2020)
(Royal Society of Chemistry, 2020-12-14)
The synthesis and characterization of heteromultimetallic complexes has been one of the biggest challenges faced by inorganic chemists in the last few years. Here, the physical nature behind the relative stability of ...
Aromaticity Survival in Hydrofullerenes: The Case of C66H4 with Its π-Aromatic Circuits (2020)
(Wiley-VCH Verlag, 2020-10-22)
The isolated-pentagon rule (IPR) is a determining structural feature that accounts for hollow fullerene stabilization and properties related to Cn (n≥60) cages. The recent characterization of an unprecedented non-IPR ...