Mostrando ítems 1-9 de 338
The structure of MgII absorption systems from spectra of gravitationally lensed quasars
(Universidad de Chile, 2012)
In this thesis I present a search for MgII absorption systems in the resolved spectra of 10 high redshifts gravitationally lensed quasars. The goal of the thesis is to study the spatial structure of MgII systems. The quasars ...
Estudos das propriedades ópticas e térmicas dos xerogéis de sílica dopados com Rodamina B
(Universidade Estadual Paulista (Unesp), 2006-02-08)
Este trabalho descreve sistematicamente a preparação de xerogéis de sílica dopados com rodamina B utilizando em baixa temperatura (ambiente), o processo sol-gel. As amostras foram obtidas após a sono-hidrólise do ...
The impact of large scale structure on the Lyx emission and absorption of galaxies at 2.2 < z < 2.8
(Universidad de Chile, 2022)
Galaxy evolution studies aim to understand how galaxies form and evolve from the initial conditions of the early universe. The modern paradigm of galaxy formation and evolution considers as a fundamental process the exchange ...
Searching for gas in debris disks
(Universidad de Valparaíso, 2020-04)
A debris disk is commonly described as a second generation circumstellar disk com- posed of dust grains, planetesimals and possibly already formed giant planets. It was long thought that debris disks were systems fully ...
Ordem-desordem: uma avaliação estrutural do Ba(ZrxTi1-x)O3
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2009-08-07)
This work have as aim, the synthesis of ceramic powders of Ba(ZrxTi1¡x)O3 (x = 0, 0.25, 0.50, 0.75 and 1) by the polymeric precursor method and investigate the degree of structural order-disorder of these systems by different ...
Espectroscopia à alta resolução do 13CD3OH
([s.n.], 1992)