Plastic pervades modern life, and menstruation is no exception. Since the middle of the 20 th century, many tampons and menstrual pads have contained somewhere between a little and a lot of plastic in ...

Most plastics are made from chemicals that come from petrol, gas or coal. They are made by heating these chemicals at a high temperature. When the plastic is soft it can be poured into a mould. Once ...

Researchers studied the "thriving" species in a polluted mangrove forest in Colombia. Fragments of metal and plastic remain on beaches after shipping containers washed ashore. The black pellets known ...

"UMass Lowell is among the nation's leading centers for plastics technology, and its Plastics Engineering program...is helping to push new boundaries of how these versatile materials are used, ...

While standard receptacles typically use three wires -- hot, neutral and ground -- you'll occasionally find 2-prong outlets in older homes. Since this type of outlet lacks a ground connection, the ...

A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

Deflection is an important design parameter for structures subjected to service load. This paper provides an explicit expression for effective moment of inertia considering cracking, for uniformly ...