Calcium production

Electrolysis. Although in Western countries the aluminothermic process has now completely replaced the electrolytic method, electrolysis is beheved to be the method used for calcium production in the People s RepubHc of China and the Commonwealth of Independent States (CIS). This process likely involves the production of a calcium—copper alloy, which is then redistilled to give calcium metal. 

U.S. imports of calcium metals fluctuate greatiy. Since the mid-1980s, the avadabiHty of very low priced calcium metal from China and the CIS has led to substantial reductions in calcium production by Western producers. This has been compensated to a certain extent by an increase in sales of processed materials, ie, alloys and particulates, by the Western companies. In 1991, more than 700 tons of calcium metal were imported to the United States from the People s RepubHc of China. Significant quantities of calcium alloys and particulates have also been imported from France and Canada. 

Some calcium products contain lead.12 While the clinical significance and long-term risks are unknown, it is best to use supplements without a high lead content. Because of the number of calcium supplements available, patients may find it overwhelming to choose a supplement. Health care providers can help... 

Mattocks, A. M., and H. R. Hernandez Assay of official calcium products... 

Calcium products lithotamnion and maerl shells of aquatic animals (including cuttlefish bones), calcium carbonate, calcium lactate, calcium gluconate... 

Platelet agonists ligation to its specific receptors leads to production and release of several intracellular messenger molecules such as calcium, products of the PLC, and COX. 

Table 3 Guano and Chilean nitrate extraction ammonium 1850 to 2000 (TgN yr sulfate, cyanimide, calcium production from...

Clinically important, potentially hazardous interactions with antacids, calcium products, quinolone antibiotics, tetracycline... 

Sevelamer Renagel 400, 800 800 mg three times a day with meals First-line agent lowers LDL cholesterol More expensive than calcium products preferred in patients at risk for extraskeletal calcification... 

Only calcium products with 500-600 mg per tablet or with an alternative dosage form (i.e., chewable, liquid, or dissolvable tablet) are listed. 

More than 280 million tons of calcium (as CaO) are produced worldwide on an annual basis. With calciums many versatile uses, calcium products can be expected to be in demand for many years to come. 

Calcium-channel blockers for the treatment of hypertension Calcium products Cephalosporins Cerebroactive medications Chlamydial infections treatment of Cholinergic drugs uses in medicine Cholinergic-receptor-blocking agents uses of Cirrhosis treatment of Congestive heart failure treatment of Constipation drug-induced Corticosteroids uses for Crohn s disease treatment of Cytokines their actions... 

Figure 7-50. Calcium production by direct decomposition of its bromide (CaBr2) in atmospheric-pressure thermal plasma. Composition of products (1) CaBr2 (2) CaBr (3) Br x 0.1 (4) Ca+, (5) Ca.

Drug-drug iuteractions Calcium salts A previous warning from the FDA that ceftriaxone and intravenous calcium products should not be co-administered to any patient to prevent precipitation leading to end-organ damage [SEDA-33, 494] was retracted in April 2009. In a search of the FDA Adverse Event Reporting System for reports of ceftriaxone-calcium interactions that resulted in serious adverse events, with ceftazidime-calcium as a comparator, 104 and 99 events respectively were identified [23 ]. For ceftriaxone-calcium-related adverse events, 7.7% and 20% were classified as probable and possible respectively for embolism. Ceftazidime-calcium resulted in fewer probable embolic events (4%) but more possible embolic events (30%). The authors claimed that their analysis supported the revised FDA recommendation that patients over 28 days old may receive ceftriaxone and calcium sequentially. This has been supported by the results of a matched cohort study in 142 patients who were exposed to the combination of ceftriaxone and intravenous calcium and in whom mortality and other adverse outcomes were not increased... 

Calcium production of calcium carbide, 18 Calcium carbide, acetylene precursor, 18 Calcium oxide, MA distillation additive, 22 Calcium tartarate, 69... 

Calcium products are obviously present in Fluidized bed fly ash when limestone is added. 

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