Abstract: The presence of gamma-ray background significantly reduces detection sensitivity when searching for radioactive sources in the field, particularly in mobile systems which must contend with a ...

By John Towfighi, CNN New York (CNN) — The US is at a low risk of an imminent debt crisis — but high risk in the long term, billionaire investor Ray Dalio writes in a new book. The US ...

It's a win-win, and it's why everything on iStock is only available royalty-free — including all Red Background images and footage. What kinds of royalty-free files are available on iStock? How can ...

Red starburst background, Sun rays anime pop art cartoon or comic, dotted texture and explosion effect or sunburst, halftone gradient, fun and exciting template frame. Royalty-free licenses let you ...