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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.
Which are the plant tissues that cover the stem and the leaves? The stem may be enclosed by epidermis (having stomata, cuticle and photosynthetic cells) as in monocots or, alte
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What is recombination frequency? Recombination frequency, or crossing over rate, is the percentage of recombinant gametes made by crossing over (in relation to the number of pa
in the oneward form
A genomic DNA library is made from the genomic DNA of an organism. For instance, a mouse genomic library could be made by digesting mouse nuclear DNA with a restriction nuclease to
Q. Besides being fundamental for the activation of the main gastric digestive enzyme how does HCl also directly participate in digestion? With its corrosive effect HCl also hel
a) In humans, is it the sperm or the ovum which verifies the sex of the offspring? b) Give a reason for your answer. (a) The sperm verifies the sex of the off
For a sample containing both protein and nucleic acid, the absorbance measured at a particular wavelength will be the sum of contributions from both types of molecule. Using the pr
WHAT ARE THE DEMERITS OF CONTINOUS BREEDERS
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