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Magnesium defficiency

I Turtin, A Vatansever, F Dilek Sanin
Separation by settling is one of the most troublesome stages of an activated sludge process. A decrease in the efficiency of separation of microbial biomass from the treated effluent causes a decrease in the overall efficiency of the treatment plant. One of the most common problems in activated sludge systems to negatively influence the settleability is sludge bulking which can be defined as non-settling situation of microbial mass. The main objective of this study is to find out the effect of phosphorus deficiency on bulking of activated sludge...
June 2006: Environmental Technology
Diana Teti, Maria Crupi, Maria Busá, Andrea Valenti, Saverio Loddo, Maurizio Mondello, Leonardo Romano
BACKGROUND/AIMS: The erythrocyte is a cell exposed to a high level of oxygen pressure and to oxidative chemical agents. This stress involves SH-groups oxidation, cell shrinkage by activation of K-Cl co-transport (KCC) and elevation of the band 3 tyrosine phosphorylation level. The aim of our study was to test whether oxidative stress could influence band 3-mediated anion transport in human red blood cells. METHODS: To evaluate this hypothesis, normal and pathological (glucose 6 phosphate dehydrogenase (G6PDH) defficient) erythrocytes were treated with known sulphydryl-blocking or thiol-oxidizing agents, such as N-ethylmaleimide (NEM), azodicarboxylic acid bis[dimethylamide] (diamide), orthovanadate, Mg2+ and tested for sulphate (SO4-) uptake, K+ efflux, G6PDH activity and glutathione (GSH) concentration...
2005: Cellular Physiology and Biochemistry
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