Calcium salts are colorless from any contribution of the calcium, and ionic solutions of calcium ( Ca < sup > 2 +</ sup >) are colorless as well.

The Calcium carbonate, from which coral skeletons are made is just over 60 % Carbon dioxide.

Calcium aluminate cements are hydraulic cements made primarily from limestone and bauxite.

Calcium sulfoaluminate cements are made from clinkers that include ye ' elimite ( Ca < sub > 4 </ sub >( AlO < sub > 2 </ sub >)< sub > 6 </ sub > SO < sub > 4 </ sub > or C < sub > 4 </ sub > A < sub > 3 </ sub > in Cement chemist's notation ) as a primary phase.

Calcium is available from hard leafy greens, nuts and seeds.

Calcium is used in many processes including muscle contraction, neurotransmitter release from nerve endings and cell migration.

Calcium released by basalts binds up CO < sub > 2 </ sub > from the atmosphere forming CaCO < sub > 3 </ sub > acting thus as a CO < sub > 2 </ sub > trap.

When the cement paste exposed to the air and meteoric water reacts with the atmospheric CO < sub > 2 </ sub >, portlandite and the Calcium Silicate Hydrate ( CSH ) of the hardened cement paste become progressively carbonated and the high pH gradually decreases from 13. 5 – 12. 5 to 8. 5, the pH of water in equilibrium with calcite ( calcium carbonate ) and the steel is no longer passivated.

Calcium carbonate, long used as the coating of paper, was now being used as an important filler as the paper industry converted from acid-based paper making systems to alkaline systems.

Calcium carbonate is used as the source of CO < sub > 2 </ sub > and the resultant calcium oxide is used to recover the ammonia from the ammonium chloride.

Calcium is released from the sarcoplasmic reticulum into the sarcomere when a muscle is stimulated to contract.

Calcium is removed from the muscle cell cytoplasm independent of repolarization ( depolarization signaling and muscle contraction are independent processes ).

Calcium mediates the binding of the complexes via the terminal gamma-carboxy residues on FXa and FIXa to the phospholipid surfaces expressed by platelets, as well as procoagulant microparticles or microvesicles shed from them.

Calcium sulfonates additives are also added to protect motor oil from oxidative breakdown and to prevent the formation of sludge and varnish deposits.

In 1959, the Indian River Central High School ( New York ) opened, serving students from the towns of Philadelphia, Theresa, Antwerp, Leray, Pamelia, the villages of Philadelphia, Theresa, Antwerp, Evans Mills, the hamlet of Calcium and the federal military installation of Fort Drum.

Calcium triggers release of the luciferin ( coelenterazine ) from the luciferin binding protein.

Calcium ions, Ca < sup > 2 +</ sup >, are released from bone into the bloodstream under controlled conditions.

Calcium also causes the release of Acetylcholine from Pre-synaptic terminal in the transmission of nerve impulse.

Calcium Causes the contraction of muscles, removing the TpI subunit from Myosin head which has ATPase activity to cause contraction.

Calcium release from bone is regulated by parathyroid hormone.

Calcium influx from NMDA receptors is necessary for the activation of CaMKII.

Calcium can be injected into selected arteries to stimulate insulin release from various parts of the pancreas, which can be measured by sampling blood from their respective veins.

In 2004, Meade acquired Coronado Filters from founder and designer David Lunt, who produce an extensive range of specialty telescopes that allow views of the sun in Hydrogen-Alpha, and formerly, at Calcium K line wavelengths.

Calcium hydroxide ( slaked lime ) is used in many chemical refinery processes and is made by heating limestone at high temperature ( above 825 ° C ) and then carefully adding water to it.

* Calcium carbonate ( CaCO < sub > 3 </ sub >) is used in manufacturing cement and mortar, lime, limestone ( usually used in the steel industry ) and aids in production in the glass industry.

Calcium oxide, in the form of lime, was often used for this purpose, since it could react with the carbon dioxide and sulfur dioxide produced during roasting and smelting to keep them out of the working environment.

The skin is washed with water and lime ( Calcium hydroxide ), but not together.

** Calcium oxide, aka burnt lime or quicklime

** Calcium hydroxide, aka slaked lime, slack lime, pickling lime or hydrated lime

* Calcium nitrate (" Norway salpeter ", " Norges salpeter " or " nitrate of lime "), a compound produced in Norway by the Birkeland – Eyde process during early 20th century

*; Calcium hypochlorite: Used by Semmelweis, as " chlorinated lime ", in his revolutionary efforts against childbed fever.

Calcium deficiency can sometimes be rectified by adding agricultural lime to acid soils, aiming at a pH of 6. 5, unless the subject plants specifically prefer acidic soil.

Calcium and Magnesium will be lacking in coir potting mixes, so a naturally good source of these nutrients is dolomitic lime which contains both.

** Calcium oxide, sometimes called caustic lime

Calcium carbonate precipitates from the white liquor and is recovered and heated in a lime kiln where it is converted to calcium oxide ( lime ).

Calcium oxide ( lime ) is reacted with water to regenerate the calcium hydroxide used in Reaction 2:

Calcium reacts in the kiln with the clay minerals to produce silicates that enable the lime to set without exposure to air.

* Calcium hydroxide ( saturated solution known as " limewater ")

Calcium hydride was substituted for Af as a drying agent for carbon tetrachloride.

Calcium metal was not available in large scale until the beginning of the 20th century.

* Calcium cyclamate ( Ca ( C < sub > 6 </ sub > H < sub > 11 </ sub > NHSO < sub > 3 </ sub >)< sub > 2 </ sub >) was used as a sweetening agent but is no longer permitted for use because of suspected cancer-causing properties.

In 2005, Calcium Made Interesting: Sketches, Letters, Essays & Gondolas was published.

Calcium was needed for agricultural, pharmaceutical and paint products.

In 1956, Thompson-Weinman expanded its own crushing operation in Sylacauga ; and Sylacauga Calcium Products was formed as a division of Moretti-Harrah.

Calcium is in the Town of Le Ray and was formerly called Sanford's Corner.

The Calcium Kid is a British mockumentary comedy film which was released in 2004.

The question that piqued his curiosity was that how come a heavier element like Calcium is present up to a greater height compared to a lighter element like Hydrogen, apparently defying gravity.

A semi-sequel, Calcium Made Interesting, was released in 2005.

Chodes was also a member of Vince Mole and his Calcium Orchestra, headed by former Apples in Stereo guitarist Chris Parfitt.

His first piece was Calcium Light Night set to music by Charles Ives and premiered in 1977.