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What is colloidal gold?Colloidal gold is the sol or colloidal suspension of gold nanoparticles in fluid (typically water). Colloids are generally red wine red (for spherical fragments much less than 100 nm) or blue/ purple (for larger spherical bits…
Gold nanoparticles or AuNPs are only a fraction of the size of human hair and are less than 100 nm in diameter.…
U.S. refiners forecast strong first-quarter earnings as margins on gasoline and diesel sales improved, refining capacity fell sharply and crude supplies tightened due to the Russia-Ukraine war.Global refining capacity has declined amid the coronaviru…
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