The progress of high temperature processes is generally described in terms of variation of the degree of conversion (alpha) with time (t). The present paper outlines a procedure for making use of alpha-t plots for comparative ...

Samples of Sm1Ba2Cu3O7-delta and Sm0.95Ba2Cu3.05O7-delta are prepared by a coprecipitation technique using organic carbonates in the presence of stable polymers. The electrical, magnetic, and microwave measurements have ...

It is well established that direct reduction of iron ore by solid carbon plays a small role in reduction, which essentially takes place via gaseous intermediate. In the present work an attempt has been taken to develop a ...

A method is described for the atomic absorption spectrometric determination of gold in geological samples, involving a modified digestion procedure with sequential use of HBr-Br2 and aqua regia [HCl-HNO3 (3 + 1)]. The ...