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Nanotubos de nitreto de gálio e nitreto de alumínio
(Universidade Federal de Santa Maria, 2008-01-30)
We performed a study of the electronic structure of gallium nitride (GaN) and aluminium nitride (AlN) nanotubes, Al x Ga 1-x N nanotube alloys, as well as heterojunctions between GaN/AlN and Al x Ga 1-x N/AlN nanotubes. ...
Efeitos secundários do buraco de ozônio antártico sobre a região Sul do Brasil
(Universidade Federal de Santa Maria, 2008-12-09)
The antarctic ozone hole is defined as the area where the ozone total column is less than 220 DU. Due to the polar vortex, the ozone poor air masses are restricted to high latitudes. However, some air masses can reach lower ...