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Q. Define 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.
Define Briefly about the Nutrition security? Nutrition security can be briefly defined as a balance between biological requirements in energy and nutrients and the quantity and
Causes of Degradation of Ecosystem Due to Agriculture Degradation of the ecosystem due to agriculture can be on the following accounts: a) Removal of trees (deforestation
Define the metabolism and respiration of cornea. Metabolism and Respiration of Cornea The cornea requires energy for the maintenance of its transparency. Energy in
Define about Skeletal system Skeletal system provides framework to the body; supports the soft tissues; protects delicate organs. The skeletal system is made up of bones an
summarise the comparative anatomy of the digestive system of the invertebrate and the vertebrate.
where we find annelid
Circulatory Assist Devices : Intra aortic balloon pump (IAUP) was introduced by Kantrowitz (19hX). It is also known as Counter pulsation or Diastolic augmentation.
Are organic solvents like benzene and ether polar or non-polar substances? Benzene and the ethers are molecules without electrically charged portions and therefore they are non
Decreasing power is available in a cell both as NADPH and NADH but these have quite distinct roles. NADH is oxidized by the respiratory chain to produce ATP by oxidative phosphoryl
Q. Source of the bacteria of Salmonellosis? The initial source of the bacteria is the intestinal tract of birds, reptiles, farm animals, humans and occasionally insects. As int
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