The book starts with an event that Maina can’t forget for a lifetime. arrest of and other political prisoners are learning manuals memoirs honour to the struggle. Not compromising his beliefs stand made Maina’s life hard miserable years, but was revolutionary decision.

This paper introduces a procedure to calculate the non-revenue water in urban water systems. A software is developed to determine the components of apparent and real losses. Identification of these parameters is so important especially in countries with critical water resources situation. Evaluation of the apparent losses components has the same importance as leakage, in countries like Iran whi...

Extra-corporeal shock wave lithotripsy (ESWL) has proved to be a revolutionary advance in the treatment of renal stone disease. It, itself, is non-invasive but may necessitate or be used as an adjunct to more invasive auxiliary procedures. The basic principles of lithotripsy, the clinical experience thus far and probable future applications are discussed.