Results 11 to 20 of about 5,797 (153)
Unexpected Findings in 16th Century Wall Paintings: Identification of Aragonite and Unusual Pigments
Heritage, 2021 Sixteenth century wall paintings were analyzed from a church in an advanced state of decay in the Apennines of central Italy, now a remote area but once located along the salt routes from the Po Valley to the Ligurian Sea. Infrared spectroscopy (FTIR-ATR)
Laura Rampazzi +3 more
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Crystals, 2020 The preferential incorporation of carboxylic acids into aragonite and its effects on the crystal growth and physicochemical properties of aragonite were systematically investigated using a seeded co-precipitation system with different carboxylic acids ...
Seon Yong Lee +3 more
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Química Nova, 2008 Aragonite is a metastable polymorph of calcium carbonate. The calcareous exoskeletons of some organisms like corals or molluscs consist essentially of aragonite.
Karl E. Bessler, Laécio C. Rodrigues
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Architecture of crossed-lamellar bivalve shells: the southern giant clam (Tridacna derasa, Röding, 1798) [PDF]
Royal Society Open Science, 2017 Tridacna derasa shells show a crossed lamellar microstructure consisting of three hierarchical lamellar structural orders. The mineral part is intimately intergrown with 0.9 wt% organics, namely polysaccharides, glycosylated and unglycosylated proteins ...
O. B. A. Agbaje +6 more
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High P-T Calcite-Aragonite Phase Transitions Under Hydrous and Anhydrous Conditions
Frontiers in Earth Science, 2022 The subduction of calcite into deep Earth and subsequent phase change are important for global carbon cycle. However, the study of the phase boundary between calcite and aragonite under high P-T conditions is insufficient due to sparse existing phase ...
Xia Zhao +10 more
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Journal of Saudi Chemical Society, 2023 This research has comprehended the crystallographic characterization of two naturally occurring calcium carbonates phases e.g. aragonite and calcite in Pila globosa (P. globosa) and eggshells respectively.
Md. Sahadat Hossain, Samina Ahmed
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Crystals, 2020 Although biomineralization of minerals induced by microorganisms has been widely reported, the mechanisms of biomineralization and the characteristics of the biominerals precipitated needs to be studied further. In this study, Staphylococcus warneri YXY2,
Yu Han +7 more
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Nacre Compared to Aragonite as a Bone Substitute: Evaluation of Bioactivity and Biocompatibility [PDF]
Materials Research, 2015 Aragonite is a metastable polymorph of calcium carbonate found in mollusk’s shells, appearing in tiles and prismatic columns, cemented in a protein matrix - mainly proteins - that acts as a framework on which the aragonite is nucleated forming nacre ...
Arthur Corrêa de Almeida +4 more
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Lethaia, EarlyView., 2021 Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido +4 more
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Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO3 dissolution [PDF]
Biogeosciences, 2008 The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO3 dissolution.
O. Aumont +5 more
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