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Chemical Speciation of Organic and Inorganic components of Environmental and Biological Interest in Natural Fluids
The International Union of Pure and Applied Chemistry (IUPAC) defines the term “speciation” as the distribution of an element amongst defined chemical species in a system, while the process leading to quantitative estimation of the content of different species is called speciation analysis. The chemical speciation of elements in natural waters and biological fluids is a key topic, essential for discussing the chemical reactivity of constituents in these systems. It is well understood that it is the chemical form of a metal or metalloids that determines its reactivity, lifetime, and fate in the environment. Chemical speciation now involves various sectors of the sciences, from chemistry to biology, biochemistry, and environmental sciences, since—as is well known—the total concentration, alone, of an inorganic or organic component (metal or ligand) in a multicomponent natural system (fresh water, sea water, biological fluids, soil, etc.) is insufficient for a comprehensive understand of its behavior in those contests.
Eroi Teramani
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I latrati del lupo
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Mess-life
Quello dei corrieri in bicicletta è un mestiere allo stesso tempo antico e recente. Nel mio immaginario i primi furono le staffette partigiane che per scambiarsi messaggi usavano uomini e donne che coraggiosamente si mettevano in strada per recapitare messaggi tra le brigate combattenti. Per citarne uno soltanto, il grandissimo Gino Bartali a suo modo fu cruciale nell’aiutare la lotta per la liberazione e salvò molte vite umane. Poi venne la recente epoca, siamo a metà anni ’80, della necessità di scambio missive tra le aziende di business, proprio un’istante prima del sopravvento dell’era di internet, ma sufficiente a creare uno zoccolo duro di messenger americani che svilupparo...
