Concentrations of cationic surfactants in aqueous solutions have been estimated on the basis of changes in the color of gold nanoparticles, used as reporter probes. We have shown that the colors of gold nanoparticles with anionic protective groups on their surfaces shift from red to indigo/purple and then back to red in a range of cationic surfactant solutions in which concentrations vary from ...

The continued increase in the cost of chemicals, energy and water makes their recovery more important today than it was 20 years ago when ultrafiltration and hyperfiltration were first introduced to the textile industry. While the filtration techniques have been used at only a few installations, these plants have been able to save enough to pay for the recovery process in one to two years. One ...

Abstract Indigo is a natural blue dye produced from the leaves of Indigofera plant, which environmentally friendly and non-carcinogenic. This study aimed to determine reduction potential value molasses brown sugar as reducing agents, examine effect hydrochloric acid concentrations aeration time on amount indigo, test fastness rubbing against solar heat, dry, wet silk fabrics that were dyed by i...

Malaria is one of the most serious natural hazards faced by human society. Although plant leaves of Indigofera oblongifolia have been used for the treatment of malaria in Saudi Arabian society, there is no laboratory-based evidence for the effectiveness and safety of the plant. This study therefore was designed to investigate the antimalarial and spleen protective activity of I. oblongifolia le...

ABSTRACT: A survey carried out in the dairy region of Pernambuco was conducted to determine most important poisonous plants for ruminants region. total 95 farmers from 19 municipalities were interviewed and grazing areas inspected. According survey, Manihot esculenta, Palicourea aeneofusca, Brachiaria decumbens, Indigofera suffruticosa, Ricinus communis Cestrum axillare. Less reported classes i...