Search
Now showing items 11-20 of 487
Syntheses of bismuth titanate templates obtained by the molten salt method
(2013-09-01)
Bismuth titanate templates (Bi4Ti3O12) were synthesized by the molten salt method in Na2SO4 and K2SO4 fluxes, using an amorphous Bi4Ti 3O12 precursor and a mechanically mixed Bi 2O3+TiO2 mixture as the starting materials. ...
Formation of beta-nickel hydroxide plate-like structures under mild conditions and their optical properties
(Academic Press Inc. Elsevier B.V., 2011-10-01)
Nanostructural beta-nickel hydroxide (beta-Ni(OH)(2)) plates were prepared using the microwave hydrothermal (MH) method at a low temperature and short reaction times. An ammonia solution was employed as the coordinating ...
An electromechanical finite element model for piezoelectric energy harvester plates
(ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2009)
Vibration-based energy harvesting has been investigated by several researchers over the last decade. The goal in this research field is to power small electronic components by converting the waste vibration energy available ...
Three-dimensional density model of the Nazca plate and the Andean continental margin
(AMER GEOPHYSICAL UNION, 2006-09-26)
We forward modeled the Bouguer anomaly in a region encompassing the Pacific Ocean (85 degrees W) and the Andean margin (60 degrees W) between northern Peru (5 degrees S) and Patagonia (45 degrees S). The three-dimensional ...
A recent tear in subducting plate explains seismicity and upper mantle structure of southern Costa Rica
(2020-11-12)
Past studies of southern Costa Rica have generated a multitude of tectonic scenarios to account for different data sets. Flat slabs, detached slabs, and slab windows have been proposed to address the uplift of the Cordillera ...
Lamb mode diversity imaging fornon-destructivetesting of plate-likestructures
(London, 2014-02-24)
Several Lamb wave modes can be coupled to a particular structure, depending on its geometry and transducer used to generate the guided waves. Each Lamb mode interacts in a particular form with different types of defects, ...
Fracture of the anterior tibial tuberosity in children
(2020-05)
Fractures of the anterior tibial tuberosity during childhood are an infrequent pathology (around 3% of all proximal tibial fractures), but the incidence of this injury has risen over recent years, likely due to the increased ...
Overriding plate, mantle wedge, slab, and subslab contributions to seismic anisotropy beneath the northern Central Andean Plateau
(American Geophysical Union, 2016-07)
The Central Andean Plateau, the second‐highest plateau on Earth, overlies the subduction of the Nazca Plate beneath the central portion of South America. The origin of the high topography remains poorly understood, and ...
Ultrasonic non-destructive testing of plate-like structures using piezoelectric array transducers
(Universidade Estadual Paulista (Unesp), 2014-09-15)
This thesis presents the study and implementation of non-destructive testing techniques of platelike structures using piezoelectric array transducers and guided acoustic waves, associated with beamforming techniques and ...