Results 31 to 40 of about 29,238 (201)
Geofísica Internacional, 1993 Un nuevo 1óbulo de lava fue extrusionado sobre el domo del Volcán de Colima a principia de marzo, 1991. En e1 primer día de actividad eruptiva, el nuevo 1óbulo del domo creció a un volumen aproximado de 2,200 m3 de forma circular con diametro de ...
Charles B. Connor +2 more
doaj +1 more source
International Journal of Chemical Engineering, Volume 2018, Issue 1, 2018., 2018 The modulation in the synthesis parameters of layered manganese oxides allowed us to produce materials with different AC conductivities. These conductivities were correlated with the catalytic performance of the materials in the decomposition of methylene blue, as a model of electron transfer reactions.
M. E. Becerra +4 more
wiley +1 more source
Journal of Nanomaterials, Volume 2016, Issue 1, 2016., 2016 Proteic Sol‐Gel method was used for the synthesis of FeNi alloy at different temperature conditions and flow reduction. The solids were characterized by XRD, H2‐TPR, SEM, TEM, Mössbauer spectroscopy, and VSM. It was observed by X‐ray diffraction pure FeNi alloy in the samples reduced at 600°C (40 mL/min H2 flow) and 700°C (25 mL/min H2 flow).
Cássio Morilla dos Santos +7 more
wiley +1 more source
Revista Brasileira de Ensino de FísicaEsse trabalho pretende, através de uma abordagem didática, apresentar a íntima ligação entre o magnetismo estelar e o geomagnetismo, ressaltando a importância da teoria de dínamo na compreensão do magnetismo no universo.
Osman Rosso Nelson +1 more
doaj +1 more source
Magnetic relaxation and magnetization field dependence measurements in La0.5Ca0.5MnO3
, 2000 We reported a systematic change in the average magnetic relaxation rate, after the application and removal of a 5 T magnetic field, in a polycrystalline sample of La0.5Ca0.5MnO3. Magnetic relaxation measurements and magnetization versus field curves were
F.M Araujo-Moreira +10 more
core +3 more sources
El magnetismo del centro peninsular: la configuración del iberismo a través de Miguel Torga y Gaziel [PDF]
, 2016 Analysis of Miguel Torga’s and Agustí Calvet, Gaziel’s travel writing with the purpose of trying to see the characteristics that conforms the iberism along the 20th century and the relationships between peripheries and centre.Análisis de la obra del ...
Ortega Román, Juan José
core +2 more sources
Metallic Magnetic Nanoparticles
The Scientific World Journal, Volume 5, Issue 1, Page 972-1001, 2005., 2005 In this paper, we reviewed some relevant aspects of the magnetic properties of metallic nanoparticles with small size (below 4 nm), covering the size effects in nanoparticles of magnetic materials, as well as the appearance of magnetism at the nanoscale in materials that are nonferromagnetic in bulk.
A. Hernando, P. Crespo, M. A. García
wiley +1 more source
La aguja de Hans Christian Ørsted
Epistemología e Historia de la Ciencia, 2022 El presente escrito da un panorama acerca de la electricidad y el magnetismo al terminar el siglo XVIII y al iniciar el siglo XIX, contexto en el cual, se tiene la invención de la pila de Alessandro Volta, y el desarrollo de la experiencia de la aguja ...
Rodrigo Andrés Bautista Rincón
doaj +2 more sources
Influence of Nanocrystalline Structure on the Magnetic Properties of Wires and Microwires
Texture, Stress, and Microstructure, Volume 32, Issue 1-4, Page 245-267, 1999., 1997 The determining factors of the outstanding magnetic properties of the so‐called nanocrystalline materials are described. The discussion is based on results performed on wires and microwire materials with general composition FeSiB(CuNb) and obtained by different rapid solidification techniques.
M. Vázquez +5 more
wiley +1 more source
Sobre a condenação do magnetismo animal: revisitando a história da psicologia
Psicologia: Teoria e PesquisaO presente trabalho procura desenvolver uma reflexão crítica sobre o processo de condenação do magnetismo animal. Partindo de uma crítica às versões lineares e progressistas da história da Psicologia, nas quais o magnetismo é excluído ou pouco explorado,
Maurício da Silva Neubern
doaj +1 more source