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Unlike ivory, which has no marrow or blood vessel system, bone has a spongy central portion of marrow from which extend tiny blood vessels; bone is therefore highly porous. Bone is also made of both mineral and carbon-based materials; the mineral-based are calcium, phosphorus, and fluoride; the carbon-based is the protein ossein.
This ivory will be occasionally marked synthetic while "French Ivory" or "India Ivory" are common marks. It can be distinguished from natural ivory due to its lighter weight and more even coloring. [5] Cellulose nitrate can be identified with a chemical spot test using diphenylamine. This ivory can degrade and produce acidic and oxidizing nitrogen.
Ivory is a main product that is seen in abundance and was used for trading in Harappan civilization. Finished ivory products that were seen in Harappan sites include kohl sticks, pins, awls, hooks, toggles, combs, game pieces, dice, inlay and other personal ornaments.
Generally, the core components of historic firearms are metal (iron, steel, brass) and wood. Decorative elements may include other metals like gold or silver, and organic materials such as bone, antler, and ivory. Animal hide and sinew may also have been used to repair damaged firearms or build a new weapon using multiple parts.
Eburnation is a degenerative process of bone commonly found in patients with osteoarthritis or non-union of fractures. Friction in the joint causes the reactive conversion of the sub-chondral bone to an ivory-like surface at the site of the cartilage erosion. [1] The word derives from Latin eburneus, which means "of ivory". [2]
Bone char is primarily made from cattle and pig bones; however, to prevent the spread of Creutzfeldt–Jakob disease, the skull and spine are no longer used. [2] The bones are heated in a sealed vessel at up to 700 °C (1,292 °F); the oxygen concentration must be kept low while doing this, as it affects the quality of the product, particularly its adsorption capacity.
Odontolite, also called bone turquoise or fossil turquoise or occidental turquoise, is fossil bone or ivory that has been traditionally thought to have been altered by turquoise or similar phosphate minerals such as vivianite.
Ivory is an off-white color that resembles ivory, the material out of which the teeth and tusks of animals (such as the elephant and the walrus) are made. It has a very slight tint of yellow. The first recorded use of ivory as a color name in English was in 1385. [11] A carving in ivory