Pesticide residues in fruits and vegetables are one of the highest concerns of consumers who need food safety. In this study, forty-eight pesticide residues from different chemical structure including organochlorine, organophosphorus, organonitrogen, dicarboximides, strobilurin, triazine, pyrethroids and other chemical groups. in 85 fruits and vegetables were determined and confirmed by GC-MS. ...

the six elements commonly known as metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. metalloid containing compounds have been used as antiprotozoal drugs. boron-based drugs, the benzoxaboroles have been exploited as potential treatments for neglected tropical diseases. arsenic has been used as a medicinal agent and arsphenamine was the main drug used to treat syphilis....

Phases having compositional fields narrower than about 1 at.% and appearing as lines in binary phase diagrams often are assumed to have properties independent of composition. That such an assumption can be seriously in error is illustrated by recent measurements on pairs of samples prepared to have compositions at opposing phase boundaries. Two microscopic properties, lattice locations of highl...