1,721,048 research outputs found
The environmental release and fate of antibiotics
No full textAntibiotics have been used as medical remedies for over 50 years and have recently emerged as new pollutants in the environment. This review encompasses the fate of several antibiotics in the environment, including sulfonamides, nitrofurans, terfenadines, cephalosporins and cyclosporins. It investigates the cycle of transfer from humans and animals including their metabolic transformation. The results show that antibiotic metabolites are of considerable persistence and are localized to ground-water and drinking water supplies. Furthermore, the results also show that several phases of the cycle of antibiotics in the environment are not well understood, such as how low concentrations of antibiotic metabolites in the diet affect humans and animals. This review also shows that improved wastewater decontamination processes are remediating factors for these emerging pollutants. The results obtained here may help legislators and authorities in understanding the fate and transformation of antibiotics in the environment. (C) 2014 Elsevier Ltd. All rights reserved.</p
Il cammino del 14C e il ruolo della fotorespirazione in due varietà di orzo a differente contenuto di proteina fogliare
No full textEffect of benzylaminopurine on enzyme activities of nitrogen assimilation pathway in detached leaves of maize plants
No full textEffetto della cisteina sull'attività della adenosintrifosfato sulfurilasi e della O-acetilserina sulfidrilasi di foglie e di cellule isolate di mais
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Sulla differente velocità di fotorespirazione di due varietà di orzo (cv. Ogra e cv. Rondo)
No full textATP-sulphurylase and O-acetylserine sulphydrylase in isolated mesophyll protoplasts and bundle sheath strands of S-deprived maize leaves
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