This paper reports on an investigation into the effects of different multi-element oxide nanofillers structure and dielectric properties polypropylene (PP)-based nanocomposites. Magnesium aluminate (MgAl2O4), calcium carbonate (CaCO3) surface-modified (CaCO3T) have been added to PP determine their thermal properties, structural changes, response breakdown strength. The results show that nanocom...

Covering is a well known relationship in semantic and object oriented data models Covering holds when a class is the union of a collection of subclasses However covering has been studied only for entity classes In this paper we investigate covering for properties as well We introduce a new relationship among properties called property covering Property covering holds when a property restricted ...