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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.
Osmoregulation in Protozoans Osmoregulation or water balance in protozoa is accomplished by contractile vacuoles. One to several contractile vacuoles may be present within the
Explain double circulatory system?
Puerperal Psychosis: Child birth can precipitate schizophrenia, depression and mania. Management: it depends on the nature of the symptoms. Danger to self and othcrs (inc
There is a wide spectrum of potential clinical presentations with heart failure. Most patients have signs and symptoms of pulmonary congestion including dyspnea, orthopnea, and par
The hydrolysis of the disaccharide lactose (in milk) give up glucose and galactose. Thus galactose is also a major dietary sugar for humans. Glucose and Galactose are epimers which
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Q. In the long term which are the organs affected by chronic Chagas' disease? In the chronic stage of Chagas' disease, that manifests years after the infection, the trypanosoma
introduction
Define role of Lipids in Controlling Gene Expression? In the lipogenic pathway, the genes that encode the enzymes of the fatty acid synthase complex are co-ordinately expressed
mechanisms of circulation of blood
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