Indeed, positive gold ions can react with noble gases, and gold particles just a few nanometres in diameter can act as catalysts in many reactions, as can single gold atoms bound in suitable ...

“There are an enormous number of people using gold nanoparticles,” says Chad Mirkin, a chemist at Northwestern University whose own studies focus on how the particles could help turn off genes ...

Background: Positive patch-test reactions to gold that are without obvious clinical relevance are common. We speculate that titanium dioxide in cosmetics and sunscreens may adsorb gold particles ...

Mining often happens in artisanal and small-scale mining operations that burn gold-mercury amalgams to extract gold particles. Credit: Simon Topp. For hundreds of years, the Amazon has been ...

For hundreds of years, the Amazon has been exploited for its gold. Today, the precious metal is just as sought after, but the remaining tiny gold particles are much harder to find. Mining often ...

Experts suggest that the gold particles found in the Indus River were transported downstream by the river’s strong currents over time and deposited along the way as placer gold in its basin.

Contrast agents are often used in diagnostic technologies like MRIs. There are many different types of contrast agents ... | Clinical And Molecular Dx ...