In this study, two species of algae from two different areas impacted by acid mine drainage (AMD) were analyzed for metal ion accumulation. The two species of algae collected were Klebsormidium and Entransia. Both algal species are located in an area of high metal ion concentrations and low pH (ranging from 2.28 to 2.89). The study assessed the concentration of iron, manganese, zinc, copper and...

The effects of fluorine ion bombardment on the channel transport properties of AlGaN /GaN heterostructures have been investigated. Ion bombardment of the heterostructure was carried out within a CF4 plasma in a reactive ion etching system at various self-bias voltages. Hall mobility and sheet electron concentration for the two-dimensional electron gas showed strong dependence on bombardment dur...

The main theoretical concepts on ionic conduction at interfaces, especially the space charge layer model, are summarized in the ®rst part of this review: ion trapping or redistribution leads to charge carrier accumulation, depletion or inversion and, consequently, to conductivity changes in composite materials. Experimental con®rmations of the space charge layer model and the complementary perc...

fabrication of a cysteamine (ca) self-assembled monolayer (sam) modified gold electrode insitufunctionalized with l-lysine (lys) is presented and described. the fabricated electrode was used forhighly selective and sensitive accumulation and the determination of copper ions (cu2+) in a nanomolarconcentration. techniques like cyclic voltammetry (cv) and electrochemical impedance spectroscopy (ei...