Abstract This article aims to investigate the identity of Socrates, compiler AP 14.1-64 (arithmetic problems and riddles). Leaving aside traditional, but very uncertain, identification with Socrates epigrammatist (D.L. 2.47), it is shown that chronological conjecture by Carcopino 1926 (late 1st century BC -2nd AD ) no longer holds. A wider time frame established (1st-4th centuries ), although e...

a novel optical sensor has been proposed for sensitive determination of bismuth ion basedon immobilization of 4-(4-nitrophenylazo)-1-naphthol on a triacetylcellulose membrane.chemical binding of bismuth ions in solution with a 4-(4-nitrophenylazo)-1-naphtholimmobilized on the triacetylcelluse surface could be monitored spectrophotometrically. theoptode shows excellent response over wide concent...