23 research outputs found
Mineralização de nitrogênio e carbono em solos sob plantações de eucalipto, em uma sequência de idades
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Atividade microbiana, carbono e nitrogênio da biomassa microbiana em plantações de eucalipto, em seqüência de idades
Full text linkTermoterapia via calor seco no tratamento de sementes de tomate: eficiência na erradicação de Xanthomonas campestris pv. vesicatoria e efeitos sobre a semente
Full text linkAção anti-helmíntica do extrato hidroalcóolico da raiz da Tarenaya spinosa (Jacq.) Raf. no controle de Haemonchus contortus em ovinos
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Influence of hydrothermal treatment on the acid and redox functions of a Ga/HZSM5 catalyst
No full textAfter steaming at 530° C for 30 minutes and for 6 hours, a Ga/HZSM5 catalyst was characterized by three model reactions (meta-xylene isomerization, propane aromatization and methylcyclohexane transformation). The activity and selectivity of this catalyst were compared to those of a fresh Ga/HZSM5 catalyst. It was demonstrated that hydrothermal treatment provokes a significant decrease in the dehydrogenation activity of the gallium species and a small decrease in the protonic acidity of the catalyst
