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Intensity of sulfonitric treatment on multiwall carbon nanotubes
(Elsevier Science, 2017-12)
We present a study of sulfonitric treatment and its effect on MWCNTs at different temperatures (90, 110, 130 and 150°C) using DRX, XPS, FTIR, Raman spectroscopy, TEM and zeta potential. It was found that oxidation starts ...
Doses e fontes alternativas de nitrogênio no milho sob plantio direto em solo arenoso
(Universidade Federal de Lavras (UFLA), 2011-01-01)
The objective of this work was to evaluate the effect of nitrogen sources and rates on maize nutrition and grain yield under no-tillage system in sandy soil. The experiment was conducted in a Typic Quartzipsamment, in the ...
Doses e fontes alternativas de nitrogênio no milho sob plantio direto em solo arenoso
(Universidade Federal de Lavras (UFLA), 2011-01-01)
The objective of this work was to evaluate the effect of nitrogen sources and rates on maize nutrition and grain yield under no-tillage system in sandy soil. The experiment was conducted in a Typic Quartzipsamment, in the ...
Doses e fontes alternativas de nitrogênio no milho sob plantio direto em solo arenoso
(2011-01-01)
The objective of this work was to evaluate the effect of nitrogen sources and rates on maize nutrition and grain yield under no-tillage system in sandy soil. The experiment was conducted in a Typic Quartzipsamment, in the ...
Fontes e parcelamento do nitrogênio em cobertura, na cultura do milho sob plantio direto
(2011-01-01)
The effect of the split-application of different sidedressed nitrogen sources on maize crop under zero tillage, in a sandy soil, was evaluated. A randomized block design was used in a factorial scheme of 3x3+1, with four ...
Fontes e parcelamento do nitrogênio em cobertura, na cultura do milho sob plantio direto
(2011-01-01)
The effect of the split-application of different sidedressed nitrogen sources on maize crop under zero tillage, in a sandy soil, was evaluated. A randomized block design was used in a factorial scheme of 3x3+1, with four ...
Doses, fontes e épocas de aplicação de nitrogênio em arroz de terras altas cultivado em sistema de semeadura direta
(Univ Fed Rural Semi-arido-ufersa, 2013-01-01)
The crop demand by nitrogen varies from one crop to other as well as the amount and application time, and this nutrient can be lost by leaching, volatilization and erosion. The objective of this study was to evaluate doses, ...