Mostrando ítems 1-10 de 17
Optimization in ultrasonic imaging systems: Use of metaheuristics to design sparse arrays and a heuristic to create an acquisiton system
(Universidade Estadual Paulista (Unesp), 2022-09-02)
Ultrasonic images have an important contribution to medical diagnosis and nondestructive testing. One strategy to generate an image is to use an array, which is a transducer composed of a set of piezoelectric elements, ...
Determinação de fontes de hidrocarbonetos policíclicos aromáticos e alifáticos em sedimentos de ambientes aquáticos
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2006-04-20)
Numerical values of polycyclic aromatic hydrocabons and n-alkanes distribution indexes of
sediments are important tools to elucidate the origins of hydrocarbons mixtures. Polycyclic
aromatic ratios are sensitive indicators ...
Evaluación de la actividad antimicrobiana in vitro de los extractos de Crinum x amabile.
(Escuela Superior Politécnica de Chimborazo, 2018-02)
The purpose of the research was to evaluate the in vitro antimicrobial activity of Crinum x amabile extracts, the vegetal matter was collected in Muisne County belong to Esmeraldas Province, the conditions was carried out ...
Diseño y fabricación de un sistema de deposición de películas delgadas y nanopartículas por la técnica de rocio pirolitico
(Universidad Michoacana de San Nicolás de Hidalgo, 2013-12)
Currently one of the great contributions of materials science is the growth of thin films, this because with the development of new materials based on this technique can enhance and manipulate electronic physical, chemical, ...
Exfoliação em fase líquida de nanofolhas MoS2 e WS2 para a preparação de aerogéis nanocompósitos com potenciais aplicações ambientais
(Universidade Estadual Paulista (Unesp), 2021-03-02)
In this project, we sought to develop aerogels with molybdenum and tungsten disulfide nanosheets, in order to create a highly porous and reactive material, since the disulfides in their nanostructured form acquire properties ...
Análise do desempenho da ultrassonografia no imageamento não invasivo de depósitos sedimentares simulados em laboratório
(Pontifícia Universidade Católica do Rio Grande do SulPorto Alegre, 2014)
In this study, the application of acoustic waves for imaging the internal architecture of sedimentary deposits produced in the simulation of different types of sediment tanks was investigated systematically. To do so we ...