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Dielectric and ferroelectric properties evolution of (1−x)(Bi0.5Na0.5TiO3)–xK0.5Na0.5NbO3 piezoceramics
(Indian Academy of Sciences, 2020-12)
In this work, piezoceramics of (1-x)(Bi0.5Na0.5)TiO3-x(K0.5Na0.5)NbO3, (1-x)BNT-xKNN, composition with x=0.01, 0.02, 0.03, 0.04, 0.05, 0.06 and 0.07 were prepared by a mechanochemically activated solid-state method. The ...
Fine-scale body and head movements allow to determine prey capture events in the Magellanic Penguin (Spheniscus magellanicus)
(Springer, 2021-06)
The identification of when, how and where animals feed is essential to estimate the amount of energy they obtain and to study the processes associated with prey search and consumption. We combined the use of animal-borne ...
Phase structure and piezoelectric properties of Ca- and Ba-doped K1/2Na1/2NbO3 lead-free ceramics
(Elsevier, 2012-10-23)
Piezoelectric lead-free ceramics, K1/2Na1/2NbO3 (KNN) modified with alkaline-earth (AE) Ca2+ and Ba2+, have been prepared by a conventional solid-state sintering technique. The effect of doping level on sinterability and ...
Clasificación automática de Limón Sutil peruano (citrus aurantifolia) usando máquinas de vectores de soporteAutomatic sorting of peruvian Subtle Lemon (citrus aurantifolia) using support vector machines
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2020-11-27)
La clasificación manual de frutas es un proceso que requiere de personal experto y es propenso al error humano. Reviste entonces vital importancia la automatización del mismo utilizando herramientas computacionales. En ...
Some harmonic analysis on commutative nilmanifolds
(Heldermann Verlag, 2020-09)
In this work, we consider a family of Gelfand pairs (KnN, N) (inshort (K, N) ) where Nis a two step nilpotent Lie group, and Kis the group oforthogonal automorphisms ofN. This family has a nice analytic property: almos ...
Influence of the BaTiO3 addition to K0.5Na0.5NbO3 lead-free ceramics on the vacancy-like defect structure and dielectric properties
(Elsevier, 2021-02)
A study on the induced changes in the vacancy-like defect structure and the dielectric properties of K0.5Na0.5NbO3 ceramics by the addition of different amounts, between 0% and 7%, of BaTiO3 is presented. The samples were ...
Synthesis and characterization of Bi0.5Na0.5TiO3-BaTiO3-K0.5Na0.5NbO3 ceramics for energy storage applications
(Springer, 2020-07)
Structural, microstructural, dielectric, ferroelectric and piezoelectric properties of the (0.95-x)Bi0.5Na0.5TiO3–0.05BaTiO3-xK0.5Na0.5NbO3 (BNT-BT-KNN) lead-free ceramics with 0.0 ≤ x ≤ 0.06 were studied. Samples were ...
Zonda wind classification using machine learning algorithms
(John Wiley & Sons Ltd, 2020-06)
Zonda wind is a typical downslope windstorm over the eastern slopes of Central Andes, in Argentina, which produces extremely warm and dry conditions creating substantial socioeconomic impacts. To achieve the Zonda wind ...
Classification of organic olives based on chemometric analysis of elemental data
(Elsevier Science, 2018-11)
The aim of this study was to discriminate organic from conventional olive samples based on the levels of macro and trace elements, combined with chemometric techniques. Ten elements (Na, K, Ca, Fe, Mg, Cu, Zn, Se, S and ...
Brown rice authenticity evaluation by spark discharge-laser-induced breakdown spectroscopy
(Elsevier, 2019-11)
Rice is the most consumed food worldwide, therefore its designation of origin (PDO) is very useful. Laserinduced breakdown spectroscopy (LIBS) is an interesting analytical technique for PDO certification, since it provides ...