15 research outputs found
Determination of trace metal concentrations in a flooded tropical lake during a complete hydrological cycle
No full textThe concentrations of the Al, Co, Cr, Cu, Pb, Sn, Ni, and Zn trace metals were monitored in Lake IpĂŞ (Brazil) during two
hydrological sub-periods : June - December 1999 (low water period, LW), and January - April 2000 (high water period, HW).
A detailed study of the physical and chemical state of the metals was performed through the MINTEQA2 computer program
using 15 abiotic parameters. An increase in concentration of many trace metals in July 1999 was due to the sudden entry of
allochthonous matter. The seasonal study showed that the metal concentrations in the lake were governed by the hydrological
regime of the Paran· River (HW), and by the occurrence of occasional flood pulses and rainfall (LW)
Enzymatic Bleaching of Organosolv Sugarcane Bagasse Pulps with Recombinant Xylanase of the Fungus Humicola grisea and with Commercial Cartazyme HS Xylanase
No full textMulticomponent spectrometric analysis of riboflavin and photoproducts and their kinetic applications
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Hybrid Two-Dimensional Correlation and Parallel Factor Studies on the Switching Dynamics of a Surface-Stabilized Ferroelectric Liquid Crystal
No full textHyper sausage neuron: Recognition of transgenic sugar-beet based on terahertz spectroscopy
No full textMolybdenum Oxide Thin Films Obtained by the Hot-Filament Metal Oxide Deposition Technique
No full textEthanol/Water Pulps From Sugar Cane Straw and Their Biobleaching With Xylanase from Bacillus pumilus
No full textSpectroscopic and Chromatographic Fingerprints for Discrimination of Specialty and Traditional Coffees by Integrated Chemometric Methods
No full textEthanol/water pulps from sugar cane straw and their biobleaching with xylanase from Bacillus pumilus
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