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...

Truffles are the most delicious, rare and most expensive edible fungi in the world. Interest on truffles has continuously grown in Iran during the past two decades. The oldest data on Iranian truffles were reported by Chatin who proposed the names Terfezia aphroditis Chatin and T. hanotauxii Chatin for samples collected in Iran (Chatin 1897, Esfandiari & Petrak 1950).During the last 70 years, s...

Abstract The Pacific Decadal Oscillation has been suggested to play an important role in driving marine heatwaves the Northeast during recent decades. Here we combine observations and climate model simulations show that became longer, stronger more frequent off coast under a positive scenario, unlike what is found negative scenario. This primarily results from different mean-state sea surface t...