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Mostrando ítems 111-120 de 633
Artículo
A cellular automaton for the modeling of oscillations in a surface reaction
(AIP Publishing, 2004-08)
The reaction of CO and O over a catalytic surface is studied with a cellular automata ~CA! model. We extend the CA model proposed by Mai and von Niessen @Phys. Rev. A 44 R6165 ~1991!# taking into account the variation ...
Artículo
Influence of Mn on the magnetocaloric effect of nanoperm-type alloys
(AIP Publishing, 2010)
In this paper, the influence of the Mn content on the magnetocaloric response of ribbon-shaped amorphous samples of Fe80−xMnxB20 x=10, 15, 18, 20, and 24 , has been studied. For this purpose, the temperature and field ...
Artículo
The Combined Effect of Low-dose Atropine with Orthokeratology in Pediatric Myopia Control: Review of the Current Treatment Status for Myopia
(MDPI, 2020)
Pediatric myopia has become a major international public health concern. The prevalence of myopia has undergone a significant increase worldwide. The purpose of this review of the current literature was to evaluate the ...
Artículo
Excellent Cryogenic Magnetocaloric Properties in Heavy Rare-earth Based HRENiGa2 (HRE = Dy, Ho, or Er) Compounds
(Science Press, 2023)
RENiX2 compounds, where RE = rare-earth element and X = p-block element, have been highly regarded for cryogenic magnetocaloric applications. Depending on the elements, they can crystallize in CeNiSi2-type, NdNiGa2-type, ...
Artículo
The magnetocaloric effect and critical behavior in amorphous Gd 60Co 40-xMn x alloys.
(AIP Publishing, 2012)
The amorphous alloys Gd60Co40−xMnx (x = 0, 5, 10, 15) were prepared by melt spinning. The Curie temperature,T c, increases monotonously with Mn addition, ranging from 198 K for x = 0 to 205 K for x = 15, while the maximum ...
Artículo
Performance improvement in olive stone's combustion from a previous carbonization transformation
(Elsevier, 2018-09)
Under the framework of circular economy, agricultural wastes are an interesting carbon-based feedstock for thermal energy and power generation. Their use could extend the availability of biomass-based fuel and, at the same ...
Artículo
Respuesta eléctrica de Nanocristales ZrO2-3mol% Y2O3
(Sociedad Española de Cerámica y Vidrio, 1999)
Se ha estudiado la evolución con los tratamientos térmicos de la microestructura y el comportamiento eléctrico de nanocristales ZrO2 – 3mol% Y2O3.La muestra, que inicialmente estaba compuesta por 77.8%wt de fase tetragonal ...
Artículo
On the use of classical JMAK crystallization kinetic theory to describe simultaneous processes leading to the formation of different phases in metals
(2015)
The classical theory of Johnson-Mehl-Avrami-Kolmogorov (JMAK) is widely used to describe the kinetics of crystallization even when the premises required for its application are not strictly fulfilled. In this paper we ...
Artículo
Cellular automata simulations on nanocrystallization processes: From instantaneous growth approximation to limited growth
(Elsevier, 2011-07)
Cellular automata simulations have been performed to simulate the crystallization process under a limited growth approximation. This approximation resembles several characteristics exhibited by nanocrystalline microstructures ...
Artículo
Kinetics of desorption from a heterogeneous surface
(American Institute of Physics Publising LLC, 1982)
Mathematical equations governing kinetics of desorption from heterogeneous surfaces are derived from a master equation with the assumption that only nearest-neighbor adatoms interact. A number of cases are analyzed: random, ...