Polyaniline-cobalt nanocomposites were synthesized bysalt of cobalt with ammonium persulphate as an oxidizing agent and aniline.This paper reports on hydrothermal technique using for synthesis and size control of cobalt nanoparticles in the composite bridge is aniline. Electrical conductivity of polyaniline alone in acidic environments, without and with cobalt nanoparticles measured.Increasing ...

Extreme pHs, especially acidic pHs, are among the environmental stresses that some bacteria face. The most important strategies that bacteria employ for acid adaptation include either production of acidophilic proteins, or raising the pH of the microenvironment by secretion of basic compounds including ammonia produced by the action of urease. Considering the importance of acid-neutralizing bac...

_ _ Acid deposition has aroused concern about aquatic organisms in soft water lakes and streams, as the loss of indigenous species is commonly observed when pH decreases. This literature review was initiated to intensively examine the distribution of invertebrates with respect to pH, in order to define the tolerance limits of various species in acidified waters and predict how acidification wou...