Matrix Mg Fe O
Mostrando 1-12 de 13 artigos, teses e dissertações.
-
1. Treatment of Sanitary Landfill Leachate by Photo-Fenton Process: Effect of the Matrix Composition
In this study it was evaluated the role of the composition of sanitary landfill leachate on the removal of dissolved organic carbon (DOC) by photo-Fenton process. The composition of the matrix (high turbidity and color, as well as presence of inorganic ions sulfate and chloride) does not reduce the efficiency of DOC removal by photo-Fenton reactions, but inf
J. Braz. Chem. Soc.. Publicado em: 2016-12
-
2. EFEITO DE TRATAMENTOS TÉRMICOS SOBRE AS PROPRIEDADES MAGNÉTICAS DE MgFe2O4 EM MATRIZ DE [Mg;Fe]O. / EFFECT OF HEAT TREATMENT ON THE MAGNETIC PROPERTIES OF MATRIX IN MgFe2O4 [Mg, Fe]O.
Neste trabalho foram estudadas as propriedades magnéticas do sistema de nanopartículas de MgFe2O4 obtidas por precipitação em solução sólida monocristalina de [Mg;Fe]O, com 2,2% de ferro, em diferentes tempos e temperaturas de precipitação. Estas partículas crescem de forma coerente com a matriz, exibindo a forma de pequenos octaedros cujas diagona
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
-
3. A novel method to optimize culture conditions for biomass and sporulation of the entomopathogenic fungus Beauveria Bassiana IBC1201
Biomass yields and sporulation of Beauveria bassiana was concerned on culture conditions, environmental factors and cultivation method. We optimized the best culture conditions for biomass yields of B. bassiana IBC1201 with the novel "two-stage" cultivation method as well as orthogonal matrix method. Firstly, we cultured spore suspension on the basal medium
Braz. J. Microbiol.. Publicado em: 2011-12
-
4. Sintese de nanotubos de carbono por CVD utilizando catalisadores à base de ferro e molibdênio suportados em matrizes cerâmicas
Molybdenum is known for its synergistic effect in the synthesis of carbon nanotubes (CNs) by chemical vapor deposition (CVD method). When added to typical catalysts like iron, nickel, and cobalt, even in small quantities, it is increases the yield of these nanostructures. The presence of Mo also has an influence on the type and number of CN walls formed. Alt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
-
5. First principle calculation of potential and multi-channel transport in Fe/MgO/Fe hetero-junction
In this work we studied the behavior of multi-channel tunneling through a realistic Fe/MgO/Fe hetero-junction ab initio potential. For this purpose we obtained Fe/MgO/Fe(001) hetero-junction effective potentials using the full potential-linear augmented plane wave WIEN2k code together with the generalized gradient approximation for the exchange-correlation p
Brazilian Journal of Physics. Publicado em: 2009-04
-
6. Fotocatálise heterogênea com TiO2 para oxidação de arsênio e sua remoção de águas por coprecipitação com sulfato férrico
The oxidation of arsenic (As(III) to As(V)) in water samples was performed by heterogeneous photocatalysis using a TiO2 film immobilized inside a photochemical reactor. After oxidation, As(V) was removed from the water samples by coprecipitation with ferric sulfate. The final conditions of oxidation and arsenic removal (TiO2 film prepared with a suspension:
Química Nova. Publicado em: 2009
-
7. Efeitos da irrigaÃÃo com esgoto tratado sobre o sistema solo-planta (milho) e induÃÃo da supressividade a doenÃas causadas por nematÃides / Effects of irrigation with treated sewage on soil â plant(maize) system and inducement of suppressiveness to diseases caused by nematodes
The treated effluents have great potential for application in agriculture, due to certain levels of nutrients and organic material that can improvement the chemical characteristics of soils and thus induce suppressiveness of soils to plant diseases caused by phytopathogens. The objective this word was to provide technical subsidies for the fertirrigation of
Publicado em: 2009
-
8. Petrography and mineral chemisty from Indaiá I and Indaiá II intrusions, western Minas Gerais State / Petrografia e química mineral das intrusões Indaiá I e Indaiá II, oeste do Estado de Minas Gerais
An integrated petrographic and mineral chemistry study has been carried out on ultramafic, potassic to ultrapotassic and silica-undersaturated rocks of kimberlitic affinity of the Indaiá I and Indaiá II intrusions, Western Minas Gerais State, Brazil. These rocks outcrop at the Alto Paranaíba Igneous Province (PIAP), within a N30W-trending, elongated area,
Publicado em: 2008
-
9. Adubação de mudas de baru (Dipteryx alata Vog.), em viveiro / Fertilization of baru seedlings (Dipteryx alata vog.), in nursery
Producing seedlings of good quality is an important step in the process of planting forest species. Addition of lime and fertilizers contribute in obtaining good quality seedlings, however, information is limited on fertilization and nutrition of native species of savannah. The objective of this study was to evaluate growth response of baru seedlings (Dipter
Publicado em: 2008
-
10. Caracterização das rochas vulcânicas e plutônicas félsicas e intermediárias do Alvo Estrela (Cu-Au), Serra de Carajás, Pará
The Estrela Cu-Au deposit is situated in the Serra do Rabo, at the easternmost part of Carajás shear zone, at the Serra dos Carajás region. It is hosted by altered andesites and gabbros and rhyolites of the Grão Pará Group, Itacaiunas Supergroup, formed at 2.76 Ga (Sm-Nd isochronic age) cut by Paleoproterozoic porphyritic quartz diorite, orthoclase-albit
Publicado em: 2006
-
11. Genese dos depositos auriferos em metaconglomerados da formação moeda, Quadrilatero Ferrifero, MG : o papel do metamorfismo e associação com a materia carbonosa / Genesis of the metaconglomerate-hosted gold deposits of the moeda formation, Quadrilatero Ferrifero (State of Minas Gerais) : role of the metamorphism and the association with carbonaceous matter
The Quadrilátero Ferrífero has historically been one of the most important gold province in Brazil, with a significant number of productive greenstone-hosted lode gold deposits within the Rio das Velhas Supergroup together with those associated with the metasedimentary sequence of the Minas Supergroup. At the base of the Moeda formation, Minas Supergroup,
Publicado em: 2005
-
12. Avaliação e síntese de corantes fenotiazínicos para determinação espectrofotométrica de sulfeto e sulfito empregando sistemas de análise em fluxo.
In this work seven aromatic amines O e N-substituted were evaluated at optimized reaction conditions for symmetrics phenothiazinic dyes. DMPD, DEPD, PPD, PAP e PAA were the start reagent, where the yield for phenothiazinic dyes varying from 10% to 43% for different oxidizing (Fe3+ or ClO-), acids (H2SO4 or HBF4) and precipitant agent (ClO4 - or BF4 -). The l
Publicado em: 2004