upgrading the voltage level of a transmission line is named as one solution to increase the transmitted power. this paper introduces the results of a research project in which the upgrade of saravan-sooran double circuit transmission system from 63 kv to 230 kv is studied. in this context, the towers remain in their current locations, where the new structure of towers and insulators as well as ...

objective: whole-mouth examination is generally considered as a gold standard for exact periodontal disease assessment. partial mouth examination also has sometimes been used for this purpose, but its efficacy has been questioned. with regard to symmetric destruction hypothesis of periodontal disease, the present study investigated the efficacy of partial- mouth examination as an alternative fo...