Calcareous Shells
Mostrando 1-3 de 3 artigos, teses e dissertações.
-
1. Síntese e caracterização de biomateriais de fosfatos de cálcio a partir de conchas calcárias fossilizadas / Synthesis and characterization of biomaterials of calcium phosphate in from calcareous fossilized shells
Research has demonstrated in recent decades, that calcium phosphate bioceramics and nanocomposite with calcium phosphate matrix may be the new generation of biomaterials to use in the repair of defects and reconstruction of bone tissue. This can be explained by new microstructural and nanostructural characteristics, interconnected microporosity, surface area
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
-
2. Os polimorfos de carbonato de cálcio: uma síntese fácil de aragonita
Aragonite is a metastable polymorph of calcium carbonate. The calcareous exoskeletons of some organisms like corals or molluscs consist essentially of aragonite. The questions of how, and why these organisms prefer the thermodynamically unstable aragonite for the construction of their hard shells are discussed. The importance of the biomineralization process
Química Nova. Publicado em: 2008
-
3. Calcification in marine molluscs: how costly is it?
Although crucial to our understanding of skeletal evolution in marine invertebrates, the cost of calcification has remained elusive for a simple reason: CaCO3 is an inorganic material. Its cost thus derives solely from the metabolic expenses of accumulating, transporting, and precipitating CaCO3 and cannot normally be separated from other metabolic costs. Tr