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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.
Adverse effects of lamivudine Because lamivudine is also active against hepatitis B virus (HBV), HIV-positive patients with chronic HBV infection may experience a flare of hep
Kinds of Succession - Ecology The ecological succession can be broadly classified into two kinds, on the basis of the nature of the habitat. Figure: Kinds of Success
Explain Transposition with VSD and Pulmonary Stenosis ? In the early years Rastelli and le Compte operations had 20 to 30 per cent mortality. This has been reduced to 5 per c
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Question 1 Write a short note on the following 1 Microinjection 2 Bio catalysis Question 2 What is RFLP? With help of schematic diagr
What are the Consequences of PEM? The consequences of PEM are most often long lasting and irreversible. The common consequences include: • Irreversible growth retardation
Pulmonary stenosis is a relatively common congenital heart defect. Usually these children with mild to moderate pulmonary stenosis survive into childhood. Since bicuspid pulmonary
The Klove roughness Discrimination Test The subject must order four blocks covered with varying grades of sandpaper presented behind a blind with regards to degree of roughness
What is the function of keratin in the epidermis? The epidermis is the outer layer of the skin made of epithelial tissue. In the epidermis there are keratin-secreting cells (ke
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