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Explain about Bioactive materials
Bioactive materials: Certain glasses, ceramics, and glass-ceramics that contain oxides of silicon, sodium, calcium and phosphorus (SiO2 , Na2O, CaO, and P2O5 ) form a chemical bond with bone, resulting in a strong mechanical implant bone bond. These materials do bond to bone through a time-dependent, kinetic modification of the surface triggered by their implantation within living bone. An ion-exchange reaction between the bioactive implant and surrounding body fluids results in the formation of a biologically active calcium phosphate layer on the implant. This layer is chemically and crystallographically equivalent to the mineral phase in bone which is responsible for the strong interfacial bonding.
State the term - localisation scales The localisation scales are also empirically derived, being based on studies of patients with localised brain lesions. There are frontal,
what is the phylum protozoa and when he was discover
Mutations are the only kind of variability generating mechanism in prokaryotes and asexually reproducing organisms. But in eukaryotes where sexual recombination occurs, even in one
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In the typical Western diet approximately 80-140 G triglyceride and 0.5-1.5 G cholesterol are eaten daily. Following digestion, absorption and reesterification, triglyceride and c
Centrioles Centrioles is also called cell centre . Centrosome discovered by Benden . T. Boveri called it centrosome. Centrosome is present in all animal eukaryotic
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