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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.
Explain Biochemical investigation Biochemical investigations: These help to reveal nutrients and metabolites in blood and /or urine, and/or faeces that indicate an infectio
Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Nicotinic Acetylcholine Receptors (nAChR) in SA node c
Differential reinforcement of low response rate (DRL) This is used to encourage low rates of responding. Example: "If you ask me for a potato chip no more than once every 10 mi
sea divisions
explain why it is essential that muscle cells, during anaerobic respiration, convert pyruvic acid(pyruvate) into lactic acid, even though the conversion results in an accumulation
Problem of Polarity The control of polarity in regenerating coelentrates like hydra has received much attention for many years. You are already aware that while a hydra is cu
what is the function of dna primer
SKELETA L TISSUES - These connective tissues form the endoskeleton of the vertebrates. These support the body, protect the various organs and help in locomotion. Skel
If you create an F2 generation by mating two of the F1 offspring from your cross of a pure-bred brown pig with a pure-bred heavy spotted red pig. Explain why the pigs in your F2 ge
How the Oxidation-reduction potential influence the spoilage of meat? You learnt earlier that the presence or absence of oxygen and the 0-R potential of the food itself has a b
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