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Item A COMPARATIVE STUDY OF THE CORROSION INHIBITIVE PROPERTIES OF PYRIMIDINE DERIVATIVES FOR MILD STEEL(Hindawi, 2009-03-31) Sathya, P; Parameswari, K; Chitra, S; Selvaraj, AThe influence of pyrimidine derivatives on the corrosion inhibition of mild steel in 1 M H2SO4 was studied using weight loss and electrochemical techniques. These compounds act as good corrosion inhibitors even at low concentration and the inhibition efficiency increased with the increase in inhibition concentration. The corrosion rates have been determined at various temperatures (303-333K) by weight loss measurements. The Rt values obtained from EIS method increased with increase in inhibitor concentration. The potentiostatic polarization results clearly revealed that the inhibitors behave as a mixed type but slightly anodic in nature. The adsorption process was found to obey the Langmuir adsorption isotherm. The synergistic effect of halide ion on the inhibition efficiency increase with increase concentration.Item ISOLATION OF XYLANOLYTIC FUNGI FROM VARIOUS SOIL SAMPLES IN AND AROUND TAMIL NADU(Asian Journal of Microbiology, Biotechnology and Environmental Sciences, 2009) Sashi, V; Malathy, N SXylanase depolymerises xylan, a major component of hemi cellulose in plant cell walls. Xylan accounts for one third of all renewable organic carbon on earth. The main commercial use of xylanase is biobleaching of paper and pulp due to main bleach boosting properties. Filamentous fungi are particularly interesting producers of xylanase, since they excrete the enzymes into the medium and their enzyme levels are much higher than those of yeast and bacteria. An extensive study was conducted to isolate a number of fungal species from nine different soil samples. Eighty-two isolates were made and identified. They belong to fourty nine fungal species and sixteen genera. © Global Science Publications.