Astatine is the rarest naturally occurring element on Earth and one of the least studied within the periodic table, mostly ...

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and ...

Water transport in periodic mesoporous organosilicas (PMOs) was studied using pulsed field gradient NMR. A series of isogeometric PMO materials with different chemical compositions of the pore walls ...

Betalains are tyrosine-derived pigments that consist of red-violet betacyanins and yellow betaxanthins. These pigments are major sources of natural food dyes in the United States. Decades of table ...