Relation among feeding roving gauge, twist factor and yarn property were researched, property of polyacrylonitrile preliminary heat treatment in oxidizing polyester filament core-spun yarn was tested.

The Italian government has said in a preliminary report that the plane was hit by a heat-seeking missile.

But he says preliminary research suggests that a large solar plant could inject extra heat during the day and trim overnight heat demand, thus displacing another third of a field's gas consumption.