Over centuries, some of the world’s most recognizable symbols have completely lost their original meanings—or have been ...

Methods Analysis of base metals and trace elements in epizonal, intrusion-associated mineral systems help to vector along, and map, gold pathways across the project area. By normalizing vector element ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

We present a general method for solving the modified Helmholtz equation without shape approximation for an arbitrary periodic charge distribution, whose solution is known as the Yukawa potential or ...