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Mostrando ítems 201-210 de 252
Trends in nanoscience, nanotechnology, and carbon nanotubes: a bibliometric approach
(2014)
"Carbon nanotubes are currently one of the most important materials due to their strong mechanical resistance, light weight, and transport properties. Since the publication of Ijima’s paper on tubular carbon structures ...
Síntesis y caracterización de óxidos cerámicos nanoestructurados de Ce y/o Mn para remoción de fluoruro del agua
(2015)
"El método solvotermal ha sido empleado con éxito en la preparación de materiales
cerámicos avanzados, por ejemplo de óxidos cerámicos. La intervención de
compuestos orgánicos en la síntesis de óxidos cerámicos a partir ...
Estudio de los efectos magnetocalórico y elastocalórico en aleaciones Heusler ferromagnéticas de los sistemas Ni-Mn-In-X (X= Cu, Cr y Ga)
(2016)
"Se fabricaron aleaciones tipo Heusler de los sistemas Ni-Mn-In-X (X= Cu, Cr y Ga) que presentan transformación martensítica en un intervalo de temperatura cercano a la temperatura ambiente. La síntesis de las aleaciones ...
Generalización paramétrica de la espiral de cornu en difracción óptica
(2016)
"El objetivo general de este estudio fué realizar una revisión matemática detallada de
las formulaciones básicas del fenómeno de difracción óptica.
Es por ello que en el Capítulo 1 se presenta una descripción de diferentes ...
Evaluation of vascular tone and cardiac contractility in response to silver nanoparticles, using Langendorff rat heart preparation
(Elsevier, 2017)
"Silver nanoparticles (AgNPs) have been widely used because of their antimicrobial properties. However, several reports suggest that AgNPs exposure promote cardiac effects that involve nitric oxide (NO) and oxidative stress ...
Magneto-caloric effect in the pseudo-binary intermetallic YPrFe17 compound
(Elsevier, 2011)
"We have synthesized the intermetallic YPrFe17 compound by arc-melting. X-ray and neutron powder diffraction show that the crystal structure is rhombohedral with space group (Th2Zn17-type). The investigated compound ...
Optimizing the curie temperature of pseudo-binary RxR'2-xFe17 (R,R' = rare earth) for magnetic refrigeration
(IOP Publishing, 2014)
"Several pseudo-binary RxR2-x'Fe-17 alloys (with R = Y, Ce, Pr, Gd and Dy) were synthesized with rhombohedral Th2Zn17-type crystal structure determined from x-ray and neutron powder diffraction. The choice of compositions ...
Shape memory behavior of Ni-Fe-Ga and Ni-Mn-Sn ribbons
(EDP Sciences, 2015)
"Magnetic Shape Memory Alloys exhibit multifunctional properties due the martensitic transformation (MT) and accompanying changes in the magnetic subsystem. In this work, melt spun ribbons of nominal composition Ni55Fe16Ga29 ...
Transformation behavior and magnetocaloric effect in Mn1−xCrxCoGe (x = 0.04 and 0.11) melt-spun ribbons tailored by heat treatment
(Elsevier, 2017-12)
"Recently, MnNiGe and MnCoGe intermetallic compounds have received a considerable attention due to the coupled tunable martensitic and magnetic transitions as well as giant magnetocaloric effect (MCE) they exhibit. In this ...
Enhanced magnetocaloric effect tuning efficiency in Ni-Mn-Sn alloy ribbons
(Elsevier B.V., 2017-11)
"The present work was undertaken to investigate the effect of microstructure on the magnetic entropy change of Ni50Mn37Sn13 ribbon alloys. Unchanged sample composition and cell parameter of austenite allowed us to study ...