[permalink] [id link]
Calcium has a higher electrical resistivity than copper or aluminium, yet weight-for-weight, due to its much lower density, it is a rather better conductor than either.
from
Wikipedia
Some Related Sentences
Calcium and has
Calcium has been added to over-the-counter products, which contributes to inadvertent excessive intake.
Calcium has four stable isotopes (< sup > 40 </ sup > Ca, < sup > 42 </ sup > Ca, < sup > 43 </ sup > Ca and < sup > 44 </ sup > Ca ), plus two more isotopes (< sup > 46 </ sup > Ca and < sup > 48 </ sup > Ca ) that have such long half-lives that for all practical purposes they also can be considered stable.
Calcium also has a cosmogenic isotope, radioactive < sup > 41 </ sup > Ca, which has a half-life of 103, 000 years.
Calcium isotope fractionation during mineral formation has led to several applications of calcium isotopes.
Calcium channel blockers have been used to treat Alzheimer ’ s disease with some success, and the use of lithium to decrease IP < sub > 3 </ sub > turnover has also been suggested as a possible method of treatment.
Calcium carbonate has two forms, the stable calcite, and the metastable aragonite, which is stable within a reasonable range of chemical environments but rapidly becomes unstable outside this range.
Calcium lactate added to toothpaste has reduced calculus formation.
Calcium Causes the contraction of muscles, removing the TpI subunit from Myosin head which has ATPase activity to cause contraction.
A study has suggested that low Calcium causes soil acidification and increased toxicity caused by metallic elements such as Aluminium may be causing the dieback.
The company is an independent film production arm run by Natascha Wharton, and has produced films that include Billy Elliot, Shaun of the Dead and The Calcium Kid.
One such mechanism to detect low calcium concentration has been illustrated by the lcrV ( Low Calcium Response ) antigen utilized by Yersinia pestis, which is used to detect low calcium concentrations and elicits T3SS attachment.
Studies in Chembur has also found high levels of Copper, Chromium, Calcium, Arsenic and Mercury in ground water.
Calcium aluminosilicate, an aluminosilicate compound with calcium cations, most typically has formula CaAl < sub > 2 </ sub > Si < sub > 2 </ sub > O < sub > 8 </ sub >.
A study released by Creighton University has shown Calcium and Vitamin D supplementation, even over a short period, can significantly reduce stress fractures in female military recruits.
This inhibition of voltage-gated Calcium channels by G protein-coupled receptors has been demonstrated in the dorsal root ganglion of a chick among other cell lines.
Calcium ( Ca ) has a total of 24 isotopes, from < sup > 34 </ sup > Ca to < sup > 57 </ sup > Ca.
Calcium also has a cosmogenic isotope, radioactive < sup > 41 </ sup > Ca, which has a half-life of 102, 000 years.
Calcium and higher
In this way we can understand why Calcium is present at higher levels than hydrogen, it is because the radiation pressure on the former is more than on the latter.
Calcium and than
At a breakage site in Rome, Testaccio, close to the Tiber, the fragments, later wetted with Calcium hydroxide ( Calce viva ), remained to create a hill now named Monte Testaccio, high and more than 1 km in circumference.
The use of Calcium Nitrate can reduce the melting point at 131ºC and today there are several technical calcium nitrate grades stable at more than 500ºC.
By combining the chemistry of a particular product ( CCE ) and its particle size the Effective Calcium Carbonate Equivalent ( ECCE ) is determined. The ECCE is percentage comparison of a particular agricultural limestone with pure calcium carbonate with all particles smaller than 60 mesh. Typically the aglime materials in commercial use will have ECCE ranging from 45 percent to 110 percent.
Calcium salts, such as calcium bicarbonate and calcium carbonate are both more soluble in hot water than cold water.
Calcium alginate is used in different types of medical products, including burn dressings that promote healing and can be removed with less pain than conventional dressings.
Calcium and due
The coarse character of the hairs is due to Silicon dioxide and Calcium carbonate.
* Autosomal dominant Hypocalcaemia due to a mutation of the Calcium receptor ( CaR )
Calcium pyrophosphate dihydrate disease ( CPPD ) is a rheumatologic disorder with varied symptoms arising due to the accumulation of crystals of calcium pyrophosphate dihydrate in the connective tissues.
Calcium and its
Calcium is not naturally found in its elemental state.
* Calcium sulfate ( CaSO < sub > 4 </ sub >· 2H < sub > 2 </ sub > O ) is used as common blackboard chalk, as well as, in its hemihydrate form better known as Plaster of Paris.
Calcium carbonate dissolved into water may precipitate out where the water discharges some of its dissolved carbon dioxide.
Calcium binds with available oxalate in the gastrointestinal tract, thereby preventing its absorption into the bloodstream, and reducing oxalate absorption decreases kidney stone risk in susceptible people.
In 1956, Thompson-Weinman expanded its own crushing operation in Sylacauga ; and Sylacauga Calcium Products was formed as a division of Moretti-Harrah.
* Calcium Chloride ( CaCl < sub > 2 </ sub >, often added to salt to lower its working temperature )
At a nationwide level, it is considered Ciudad Blanca (" The White City "), for its high production of Calcium Oxide.
Calcium carbonate is deposited in its tissues, making it inedible to most herbivores.
Calcium and much
Calcium metal reacts with water, evolving hydrogen gas at a rate rapid enough to be noticeable, but not fast enough at room temperature to generate much heat.
Calcium and lower
Calcium channel blockers and losartan are associated with a lower risk of gout as compared to other medications for hypertension.
Calcium and density
Calcium, with a density of 1. 55 g / cm < sup > 3 </ sup >, is the lightest of the alkaline earth metals ; magnesium ( specific gravity 1. 74 ) and beryllium ( 1. 84 ) are more dense, although lighter in atomic mass.
Calcium and is
Calcium ( ) is the chemical element with symbol Ca and atomic number 20.
Calcium is a soft gray alkaline earth metal, and is the fifth-most-abundant element by mass in the Earth's crust.
Calcium is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.
Calcium is essential for living organisms, in particular in cell physiology, where movement of the calcium ion Ca < sup > 2 +</ sup > into and out of the cytoplasm functions as a signal for many cellular processes.
Calcium is the fifth-most-abundant element by mass in the human body, where it is a common cellular ionic messenger with many functions, and serves also as a structural element in bone.
Calcium, combined with phosphate to form hydroxylapatite, is the mineral portion of human and animal bones and teeth.
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 one of the common compounds of calcium.
Calcium is used
* 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 hydroxide solution ( Ca ( OH )< sub > 2 </ sub >) ( also known as limewater ) is used to detect the presence of carbon dioxide by being bubbled through a solution.
* Calcium arsenate ( Ca < sub > 3 </ sub >( AsO < sub > 4 </ sub >)< sub > 2 </ sub >) is used in insecticides.
* Calcium carbide ( CaC < sub > 2 </ sub >) is used to make acetylene gas ( for use in acetylene torches for welding ) and in the manufacturing of plastics.
* Calcium chloride ( CaCl < sub > 2 </ sub >) is used in ice removal and dust control on dirt roads, in conditioner for concrete, as an additive in canned tomatoes, and to provide body for automobile tires.
* 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.
* Calcium gluconate ( Ca ( C < sub > 6 </ sub > H < sub > 11 </ sub > O < sub > 7 </ sub >)< sub > 2 </ sub >) is used as a food additive and in vitamin pills.
* Calcium hypochlorite ( Ca ( OCl )< sub > 2 </ sub >) is used as a swimming pool disinfectant, as a bleaching agent, as an ingredient in deodorant, and in algaecide and fungicide.
* Calcium permanganate ( Ca ( MnO < sub > 4 </ sub >)< sub > 2 </ sub >) is used in liquid rocket propellant, textile production, as a water sterilizing agent and in dental procedures.
* Calcium phosphate ( Ca < sub > 3 </ sub >( PO < sub > 4 </ sub >)< sub > 2 </ sub >) is used as a supplement for animal feed, fertilizer, in commercial production for dough and yeast products, in the manufacture of glass, and in dental products.
1.571 seconds.