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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.
What is genes Duplication ? Duplication of genes can happen when a portion of a chromosome breaks off and attaches itself to the end of its homologous chromosome, as seen below
Viriods and Prions Viroids In 1971, T.O.Diener reported that the spinde tuber disease of potato causing gnarling and cracking of the tuber, is caused by multiplica
Are the arteries or the veins constituted of more muscle tissue? How dissimilar are the walls of these two types of blood vessels? The arterial system has thicker muscle walls
Define about the Ultraviolet rays - carcinogenic? Ultraviolet rays: There is ample evidence from epidemiological studies that ultra violet rays derived from the sun induce an i
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what are the general characters of chordates? At least 10 characters.
Hospitalization Hospitalization is stressful experience for children, adolescents and their families. It is an interruption of the child's active cycle of growth and deve
Class of Mollusca - Monoplacophora Bilaterally symmetrical, with broad flat foot and single shell, mantle cavity has five to six pairs of gills; six pairs of nephridia of whi
significance of amoebozoa
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