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Mostrando ítems 11-20 de 384
First late Ordovician paleomagnetic pole for the Cuyania (Precordillera) terrane of western Argentina: A microcontinent or a Laurentian plateau?
(Elsevier Science, 2004-12)
Time and tectonic processes involved in docking of the Argentine Precordillera. (Cuyania terrane) against SW Gondwana has been a matter of much debate. A paleomagnetic study on the Early Caradoc Pavón Formation, exposed ...
Compositional and structural changes at the anodic surface of thermally poled soda-lime float glass
(American Institute of Physics (AIP), 2008-09-01)
Applying high dc electric fields at elevated temperatures on silicate glasses results in displacement of ions, causing compositional and structural changes in the anodic surface. In this work, the ionic displacement was ...
Compositional and structural changes at the anodic surface of thermally poled soda-lime float glass
(American Institute of Physics (AIP), 2008-09-01)
Applying high dc electric fields at elevated temperatures on silicate glasses results in displacement of ions, causing compositional and structural changes in the anodic surface. In this work, the ionic displacement was ...
Condutividade elétrica e polarização térmica de vidros soda-cal-sílica contendo diferentes cátions tetravalentes
(Universidade Estadual Paulista (Unesp), 2011-02-17)
Neste trabalho realizamos a polarização térmica em vidros silicatos com composição (%mol) 22Na2O.8CaO.65SiO2 .5MO2 (M = Si, Ti, Ge, Zr, Sn e Ce). A polarização térmica consiste em aplicar um campo elétrico DC de elevada ...
Condutividade elétrica e polarização térmica de vidros soda-cal-sílica contendo diferentes cátions tetravalentes
(Universidade Estadual Paulista (Unesp), 2011-02-17)
Neste trabalho realizamos a polarização térmica em vidros silicatos com composição (%mol) 22Na2O.8CaO.65SiO2 .5MO2 (M = Si, Ti, Ge, Zr, Sn e Ce). A polarização térmica consiste em aplicar um campo elétrico DC de elevada ...
Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
(Universidad Nacional Autónoma de México. Instituto de Geofísica, 2015-05)
A detailed paleomagnetic and rock magnetic investigation has been carried out on the Early Cretaceous Ponta Grossa dike swarm in southern Brazil. This formation seems an excellent target for paleomagnetic study. The dikes ...
Eocene paleomagnetic pole for South America: Northward continental motion in the Cenozoic, opening of Drake Passage and Caribbean convergence
(American Geophysical Union, 2007-03)
A paleomagnetic study of Eocene volcanic rocks in Patagonia yields high unblocking temperature and high-coercivity magnetizations. Combining these results with those of a previous study on Patagonian Eocene basalts yields ...
Medium effects in the pion-pole mechanism [Formula Presented] of neutron star cooling
(2003-01-01)
Nuclear medium effects in the neutrino cooling of neutron stars through the reaction channel [Formula Presented] are incorporated. Throughout the paper we discuss different possibilities of right-handed neutrinos, massive ...
Simulation and parameterization by the finite element method of a C Shape Delectromagnet for application in the characterization of magnetic properties of materials
(World Academy of Science, Engineering and Technology, 2012-11-22)
This article presents the simulation, parameterization and optimization of an electromagnet with the C–shaped configuration, intended for the study of magnetic properties of materials -- The electromagnet studied consists ...