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Biological and technical study of a partial-SHARON reactor at laboratory scale:...
Gonzalez-Martinez, A.; Calderon, K.; Albuquerque, Antonio; Hontoria, E.; Gonzalez-Lopez, J.; Guisado, I.; Osorio, FranciscoThis study was on the technical and biological characteristics of a partial-SHARON submerged-filter bioreactor of 3 L. The main focus was the influence of the hydraulic retention time (HRT) on biofilms. For this purpose, we used molecular tools based on the partial 16S rRNA genes. The results showed that the HRT may affect the nitrification processes of a bioreactor using synthetic wastewater containing 600 mg/...
Effect of aeration on steady-state conditions in non- and partially aerated low...
Albuquerque, Antonio; Gonzalez-Martinez, A.; Osorio, FranciscoExcessive growth of biomass and retention of solids associated with air bubbles lead to bed clogging, which affects the biofilters' performance. Two experiments were carried out in a submerged biofilter at the flow velocity of 0.5 m h(-1), for an organic loading rate of 51 g C m(-3) h(-1) and a nitrogen loading rate of 13 g NH4-N m(-3) h(-1), one with the biofilter not aerated, the other with the biofilter part...
Cyclotron mass of electrons in GaN-Al xGa1-xN heterostructures
Oliveira,Solemar Silva; Souza,Marcio Adriano R.; Borges,Antonio Newton; Osório,Francisco A. PintoThe quasi-two-dimensional electron cyclotron mass in GaN-Al xGa1<FONT FACE=Symbol>-</FONT> xN heterostructures is theoretically calculated. The shifting in Landau Levels due to the electron Longitudinal Optical phonon interaction is calculated through the Second Order Improved Wigner Brillouin Perturbation Theory (IWBPT). Experimental results recently obtained for GaN heterojunction are well described by the th...
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