This paper aims to examine the effect of agglomeration on firm level productivity in Iran’s food manufacturing by employing a firm level dataset during 1986–2015 among firms for four districts. The empirical results show that agglomeration in north...

is higher

than 5 weight percent, agglomeration of nano particles occured. Debonding stress relates on

particle size inversely and debonding stress will be raised as particle size decreases.

Therefore, as shown in the SEM micrograph of a...