THE EFFECT OF ADDITION OF NANOPARTICLES, ESPECIALLY ZRO2-BASED, ON TRIBOLOGICAL BEHAVIOR OF LUBRICANTS

The aim of the paper was to discuss different effects, such as, among others, agglomeration of selected nanoparticles, particularly those from zirconia, on the tribological behavior of lubricants.The explanation of the difference between the concepts of ‘aggregation’ and ‘agglomeration’ for ZrO2 nanoparticles is included.The

Abstract We study momentum space dispersion formulas in general QFTs and their applications for CFT correlation functions.We show, using two independent methods, that QFT dispersion formulas can be written in terms of causal commutators.The first derivation uses analyticity properties of retarded correlators in momentum space.The second derivation