Amorphous calcium phosphates
Amorphous calcium phosphates: synthesis, properties and uses in biomaterials
... term amorphous calcium phosphate (ACP) has different ...to amorphous calcium orthophosphate phases, and the core of this report will essentially deal with these ...of calcium phosphate ...
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Physico-chemical-mechanical and in vitro biological properties of calcium phosphate cements with doped amorphous calcium phosphates.
... (generally calcium-deficient apatite or carbonated ...doped amorphous calcium phosphate-based cements, we were interested in determining the cytocompatibility of our materials according to standards ...
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First successful stabilization of consolidated amorphous calcium phosphate (ACP) by cold sintering: toward highly-resorbable reactive bioceramics
... view, Amorphous Calcium Phosphates (ACP) appear as well suited bioceramics taking into account their high ...various calcium phosphate samples (co)doped with carbonate (C� 2 -i and magnesium ...
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First successful stabilization of consolidated amorphous calcium phosphate (ACP) by cold sintering: toward highly-resorbable reactive bioceramics
... view, Amorphous Calcium Phosphates (ACP) appear as well suited bioceramics taking into account their high ...various calcium phosphate samples (co)doped with carbonate (C� 2 -i and magnesium ...
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Consolidation of bone-like apatite bioceramics by spark plasma sintering of amorphous carbonated calcium phosphate at very low temperature
... the amorphous phase into carbonated ...initially amorphous powder appears responsible for the consolida tion of the sample at low temperature by surface ionic di ffusion process enhanced by the applied load ...
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Biological mineralizations based on calcium phosphates
... Nanocrystalline apatites precipitate easily in aqueous solutions and their wide domain of formation is probably related to their widespread occurrence in living organisms. Nascent apatite crystals from any origin (tooth ...
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Apatitic calcium phosphates: Synthesis, characterization and reactivity in the removal of lead(II) from aqueous solution
... from calcium cations and orthophos- phate species present in the liquid ...The calcium carbonate contents were calculated according to the corresponding weight loss observed at 700 ...and calcium in ...
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Nanoscale Ion Dynamics Control on Amorphous Calcium Carbonate Crystallization: Precise Control of Calcite Crystal Sizes
... the amorphous matrix could therefore be a ffecting the growth of the crystalline nuclei, limiting their ...the amorphous structure, which would then result in larger crystals, as found ...
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Comparative Study of Conversion of Coral with Ammonium Dihydrogen Phosphate and Orthophosphoric Acid to Produce Calcium Phosphates
... 2.2 Experimental Method The coral samples were crushed in a mill and cleaned with 2% (v/v) NaClO, further ground within an aluminium oxide ball mill (46 rpm, 2 h), and then dried at 100˚C for 2 hours before use. ...
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Comparative Study of Conversion of Coral with Ammonium Dihydrogen Phosphate and Orthophosphoric Acid to Produce Calcium Phosphates
... 2.2 Experimental Method The coral samples were crushed in a mill and cleaned with 2% (v/v) NaClO, further ground within an aluminium oxide ball mill (46 rpm, 2 h), and then dried at 100˚C for 2 hours before use. ...
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Biomedical solid state NMR : an ADRF cross polarization study of calcium phosphates and bone mineral
... This thesis investigates the application of a low power solid state NMR technique, using proton to phosphorus-31 cross polarization via adiabatic demagnetization in the r[r] ...
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From crystalline to amorphous calcium pyrophosphates: a solid state nuclear magnetic resonance perspective
... hydrated calcium pyrophosphate phases mentioned above by sev- eral approaches, including powder XRD (X Ray diffraction) and vibrational spectroscopies, providing information on the configura- tion of the ...
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Etude physico-chimique d'une nouvelle famille de matériaux mixtes ortho- et pyro-phosphates de calcium à visée biomédicale
... de calcium et sodium ...de calcium (et vice-versa), qui contrôle la structure du matériau final (amorphe ou cristallin) et ce pour une grande gamme de compositions de ...de calcium hydratés amorphes ...
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Preliminary characterization of calcium chemical environment in apatitic and non-apatitic calcium phosphates of biological interest by X-ray absorption spectroscopy
... of calcium environments and especially of non-apatitic environments of calcium ...reactive calcium sites of bone and other biological samples involving poorly crystalline apatites by a direct ...
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From crystalline to amorphous calcium pyrophosphates: a solid state Nuclear Magnetic Resonance perspective
... Studying calcium pyrophosphates represents a challenge in terms of first principles calculations of 31 P chemical shifts, as the experimental resonances are closely separated (~ 1 ppm in the case of t-CPPD, see ...
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A soft-chemistry approach to the synthesis of amorphous calcium ortho/pyrophosphate biomaterials of tunable composition
... all amorphous NaPYG materials, contrary to NaPYG-0 0 0 for which the size of powder grains seemed essentially related to the crystallite size of the α -canaphite ...of amorphous NaPYG materials were not ...
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Effects of pH and Ca/P molar ratio on the quantity and crystalline structure of calcium phosphates obtained from aqueous solutions
... 29 ]. These studies aimed to best understand the fouling of milk heat exchangers caused by calcium phosphate deposition at tempera- ture 50–70 °C. Spanos et al. [ 29 ] observed a deposit formation of ACP at 60 and ...
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First successful stabilization of consolidated amorphous calcium phosphate (ACP) by cold sintering: toward highly-resorbable reactive bioceramics
... regeneration, these amorphous compounds have not found as yet the development they deserve – except as an ingredient in bone cement formulation 25,26 . This can probably be linked to the difficulty to process ACP ...
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Amorphous Medium Language
... 4. AMORPHOUS MEDIUM LANGUAGE I want to be able to program a mesh network as though it is a space filled with a continuous medium of computa- tional ...the amorphous medium - the manifold induced by the ...
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Universal amorphous-amorphous transition in GexSe100−x glasses under pressure
... experiments and ab initio molecular dynamics (AIMD) simulations. Universal changes in distances and angle distributions are observed when scaled to reduced densities. All compositions are observed to remain ...
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