Amelanchier seeds -- like apple seeds and peach and apricot pits -- contain small traces of substances that can react with an enzyme in the gut to produce hydrogen cyanide, a potentially fatal toxin.
"Our task was to establish if the ash samples provided by the public prosecutor [contained] traces of substances and implements used to make paintings — for example, nails used to fix the canvas on chassis, substances used to prepare the painting primes, and pigments used by professional painters to prepare the oil colors," Oberlander-Tarnoveanu told me.
In their experiments, Dr Ifa and his team identified minute traces of drugs, such as cocaine and marijuana, as well as explosives.Moreover, besides indicating what substances had been deposited on the skin of the person who left the print, DESI can discern traces of substances that have been secreted through it.
Surface-enhanced Raman scattering is a powerful technique to probe small traces of substances via the strong concentration of electric fields on plasmonic substrates.
For honestly believing that real life in our great land had become just one big reality show and that overnight, without benefit of wisdom, knowledge, intellect, experience, ethics, conscience or the merest trace of substance, you wouldn't get voted off the island, could/would dance better than anyone else or be selected the next American Idol rather than the next American Midol.
Samples were analysed for traces of a substance called TCPY, a breakdown product of chlorpyrifos.
"The research conducted by Russian experts found no traces of this substance".
In response to the report about enriched uranium, Iran said the equipment had been imported and had arrived with the traces of the substance.
German investigators had discovered traces of the substance in Hamburg, where Mr. Kovtun traveled just days before Nov. 1, 2006, when Mr. Litvinenko fell ill.
