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- W2808653569 abstract "Les essais de synthese d'apatite par activite bacterienne a partir d'A.R.N. ont ete continues a partir de donneurs de calcium varies : aragonite, calcite, gypse. Dans le cas ou le donneur est un carbonate solide, la transformation du carbonate en phosphate se fait avec conservation de la forme exterieure, aussi bien en eau de mer qu'en eau douce. Les bacteries responsables de la transformation sont clairement visibles par microscopie optique a fort grossissement ou microscopie electronique. La synthese d'apatite peut etre expliquee par la rupture de l'A.R.N. en trois parties sous l'action des bacteries : une partie sucre (d-ribose) qui fournit l'energie necessaire ; une partie base azotee qui participe a l'elimination du magnesium de l'eau de mer en s'associant a la troisieme partie acide phosphorique pour former la struvite. En l'absence de magnesium, l'acide phosphorique donne directement de l'apatite en utilisant le calcium du donneur." @default.
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- W2808653569 date "1985-01-01" @default.
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- W2808653569 title "The synthesis of apatite by bacterial activity : mechanism" @default.
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