Characterization and thermodynamic study of ultra-fine particle of Ni-B amorphous alloy

Ultra-fine particle of Ni-B amorphous alloy was prepared by chemical reduction of Ni2+ with NaBH4 and characterized with TEM and XRD. The heat capacity and thermal stability were measured with a high-precision automatic adiabatic calorimeter and DTA. The upper limit of applied temperature of the substance was found to be 684 K for use as catalyst. (C) 1999 Elsevier Science B.V. All rights reserved.

Indução à repelência à água em solo arenoso o partir de extratos naturais hidrofóbicos.

2008

Demonstração de diferentes protocolos para implantação de parcelas permanentes em Floresta Ombrófila Mista.

2008

Método alternativo de extração dos componentes hidrofóbicos da matéria orgânica de solos florestais.

2008