Bone char

Bone char (Latin: carbo animalis) is a porous, black, granular material produced by charring animal bones. Its composition varies depending on how it is made; however, it consists mainly of tricalcium phosphate (or hydroxylapatite) 57-80%, calcium carbonate 6-10% and activated carbon 7-10%. It is primarily used for filtration and decolourisation.

Production

Bone char is primarily made from cow bones; however, to prevent the spread of Creutzfeldt–Jakob disease, the skull and spine are never used. The bones are heated in a sealed vessel at up to 700 °C (1,292 °F); a low concentration of oxygen must be maintained while doing this, as it affects the quality of the product, particularly its adsorption capacity. Most of the organic material in the bones is driven off by heat, and was historically collected as Dippel's oil; that which is not driven off remains as activated carbon in the final product. Heating bones in an oxygen-rich atmosphere gives bone ash, which is chemically quite different.

Chara (magazine)

Chara (Japanese: Charaの本棚) is a Japanese bi-monthly Yaoi/Shōjo manga magazine published by Tokuma Shoten. First released in 1994, the magazine has since been adapted into two different spinoffs.

History

Chara was first published in 1994 as an offshoot of Animage. In the 22nd issue of Chara, it was announced that a split-off magazine entitled "Chara Selection" would co-circulate. Later on, another split-off entitled Char@ was made. The website for Chara was designed by C&S Design in 2014.

Notable published works

Chara

Chara Selection

References

External links

Char (disambiguation)

Char may refer to:

In people:

In tanks:

Chara (surname)

Chara is a surname. Notable people with the surname include:

Bone

A bone is a rigid organ that constitutes part of the vertebral skeleton. Bones support and protect the various organs of the body, produce red and white blood cells, store minerals and also enable mobility. Bone tissue is a type of dense connective tissue. Bones come in a variety of shapes and sizes and have a complex internal and external structure. They are lightweight yet strong and hard, and serve multiple functions. Mineralized osseous tissue, or bone tissue, is of two types, cortical and cancellous, and gives a bone rigidity and a coral-like three-dimensional internal structure. Other types of tissue found in bones include marrow, endosteum, periosteum, nerves, blood vessels and cartilage.

Bone is an active tissue composed of different types of bone cells. Osteoblasts are involved in the creation and mineralisation of bone; osteocytes and osteoclasts are involved in the reabsorption of bone tissue. The mineralised matrix of bone tissue has an organic component mainly of collagen and an inorganic component of bone mineral made up of various salts.

Bone (surname)

People with the surname Bone include:

Bône (département)

Bône is a former French département in Algeria which existed between 1955 and 1962.

Considered as a French province, Algeria was departmentalised on 9 December 1848. Three civil zones (départements) replaced the three beyliks into which the Ottoman former rulers had divided the territory. The easternmost of the three original Algerian departments was called Constantine. For over a century the town of Annaba, known at that time as Bône (and in classical times as Hippo), was a sub-prefecture in the département of Constantine: this changed in 1955.

On 7 August 1955 the eastern extremity of the former département of Constantine was split off and became the separate département of Bône. This administrative reorganisation was a response to the rapid population increase experienced across the territory, especially during the preceding decade.

The new coastal département of Bône covered an area of 25,367 km²: a population of 730,594 was recorded. The department comprised five sub-prefectures: these were La Calle, Clairfontaine, Guelma, Souk Ahras and Tébessa. A final but temporary change took place between 17 March 1958 and 7 November 1959, during which time the Tébessa sub-prefectures was transferred to the département of Batna.