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Toxicity assessment of arsenic and cobalt in the presence of aquatic humic substances of different molecular sizes
(2017-05-01)
The release of contaminants in aquatic ecosystems can be influenced by humic acids. In this study, toxicity tests using environmentally relevant concentrations of arsenic and cobalt were conducted both in the presence and ...
Production of antimicrobial substances, by hospital bacteria, active against othermicro-organisms
(The Hospital Infection Society, 2007)
Use of humic substances in froth flotation processes
(Academic Press, 2019)
Fractionation and identification of the nucleic acid-related substances secreted by Streptomyces aureofaciens
(Editora Unesp, 1996-01-01)
S. aureofaciens growth in a chemically defined medium was associated with the active secretion of nucleic acid-related substances in the medium. High secretion depended on low availability of phosphate, and fractionation ...
An alternative methodology for the extraction of humic substances from organic soils
(1998-12-01)
The present study reports on an alternative methodology for the extraction of Humic Substances (HS) from the soil. The extractions were carried out with 0.5 M KOH for 3 h, at a ratio of 1:20 (m/v) under a nitrogen atmosphere. ...
Fractionation and identification of the nucleic acid-related substances secreted by Streptomyces aureofaciens
(1996-12-01)
S. aureofaciens growth in a chemically defined medium was associated with the active secretion of nucleic acid-related substances in the medium. High secretion depended on low availability of phosphate, and fractionation ...