Abstract: Disclosed are support-activators and catalyst compositions comprising the support-activators for polymerizing olefins in which the support-activator includes clay heteroadduct, prepare from a colloidal phyllosilicate such as a colloidal smectite clay, which is chemically-modified with a heterocoagulation agent. By limiting the amount of heterocoagulation reagent relative to the colloidal smectite clay as described herein, the smectite heteroadduct support-activator is a porous and amorphous solid which can be readily isolated from the resulting slurry by a conventional filtration process, and which can activate metallocenes and related catalysts toward olefin polymerization. Related compositions and processes are disclosed.

Abstract: A power rail impact analysis system which provides a total system evaluation of a conductor bar system such as may be used in mass transit, automated people movers, material handling machines, or other mobile electric vehicles. The analysis system of this invention takes samples and records data from the current passing through individual collectors, impacts seen by the collectors, and temperature information of the conductor bar.