The task before me is to speak of the evolution during the last few decades of the branch of physical chemistry which treats of the intimate mechanism of chemical reactions. The nature of the present occasion seems to call for a survey taken from a rather more personal point of view than is normally desirable or proper. Since the Swedish Academy of Sciences has done me the great honour of bring...

conclusions although iranian publications in the field of nephrology and urology have had a considerable and significant increase in the recent years amongst the middle eastern countries, there is a wide distance to be a science exporter country. results the total number of publications in the field of nephrology and urology was 3,771 (average of 189 papers per year). most of the iranian nephro...