Calcium follow

The NaCl-KCl eutectic is used when the pregnant extraction salt is to be processed by aqueous recovery (this is the salt currently used at Rocky Flats because calcium follows americium in the present aqueous recovery process). The NaCl-CaCl system is used when the salt is processed by pyrochemical means to recover the americium and residual plutonium. When the pyrochemical recovery technique is used, the NaCl-CaCl2-MgCl2 salt is contacted with liquid calcium metal at approximately 850°C in a batch extractor. The calcium reduces A111CI3,... 

Table VII shows the urinary excretion of ionized calcium following the various liquid meals. Urinary excretion of ionized calcium increased during the first hour after ingestion of the basal meal. The excretion rate then decreased and approached fasting levels by 2 hours post-meal. Although the addition of 15 g of protein as cottage cheese increased the quantity of ionized calcium...

Significantly (P < 0.05) greater quantities of ionized calcium were excreted in the urine when the high beef rather than the basal meal was fed. The excretion of ionized calcium following a meal... 

CalcitrioPs action primary function is in regulating plasma calcium concentration. In health, the plasma total calcium concentration is tightly controlled at 2.35-2.55 mmol/1. Only the ionized or free fraction, amounting to about 50% of the total, is physiologically active in for example, maintenance of membrane electrical potential and bone formation. The hormone causes increased bone resorption via activation of osteoclasts (see Section 9.4) and increased intestinal absorption of calcium following the synthesis of a specific binding protein in mucosal cells. As described in Section 4.7, some... 

Increase of free cytosolic calcium is toxic for various reasons. Among them are the diminution of ATP levels (Tsuji et al. 1994), the protease and lipase activation, and the FR production that causes a peroxidation of lipids. The inflow of calcium in the terminals could also increase the release of endogenous excitatory amino acids and propagate neuronal damage through positive feedback (Choi and Hartley 1993). Glutamic neurotoxicity mediated by calcium follows three stages ... 

Magnesium can be determined on the same sample as for calcium, following a fifty-fold dilution with lanthanum chloride. 

Increased urinary calcium following exercise may be caused by the onset of metabolic acidosis associated with prolonged exercise. Elevation of urinary calcium has been noted in studies where metabolic acidosis was induced by feeding an acid ash diet (75), hydrochloric acid (76), or ammonium chloride (77). Renal tubular acidosis can also induce elevated urinary calcium (78). Walser (79) re-... 

Fia. 2. Change in plasma calcium following intravenous injection of 1000 lU of parathyroid extract in the dog. [Redrawn from Copp and Cameron (CIS).]... 

N5. Nilsson, B. E., and Westlin, N. E., The plasma concentration of alkaline phosphatase, phosphorus and calcium following femoral neck fracture. Acta Orthop. Scand. 43, 504-510 (1972). 

Walker et al. (W4) reported a fall in urinary calcium following operations on soft tissues of a severe character, and this correlated well with a fall in sodium output. On the other hand, urinary magnesium tends to behave like nitrogen and show an increased excretion during the second to fifth or sixth days following injury (W3). 

A commercial digestion process is currently in use for the extraction of REE, including yttrium from monazite. The process is based on the application of caustic soda, and one of the products is REE hydroxide. The rare earths are leached from bastnaesite with hydrochloric acid (or sulfuric acid), followed by calcination at >600°C they are then treated with 16 M nitric acid (Kirk-Othmer 1999). Yttrium is produced as pure silver metal, both on the laboratory and industrial scale, by molten salt electrolysis and metallothermic reduction of the fluoride, oxide, or chloride with calcium following an enrichment process, after separation by fractionated crystallization, ion exchange... 

Agents that increase intracellular calcium, causing an influx of extracellular calcium following receptor activation or the release of calcium from intracellular stores, cause endothelium- (and NO-) dependent relaxation in... 

FJ.T. Burke, D.C. Watts, Weight loss of three resin-based lining materials containing calcium following a phosphoric acid-etching and washing cycle, J. Dent. 17 (1989) 38-40. 

CgH Oz+Ca + o-Semiquinone calcium follows C6H4O2 +Mg2+ CgH O +Sr + o-Semiquinone strontium follows CgH4,Oj +Mg + QH4O2+Ba + o-Semiquinone barium follows C6H4O2 -fMg2+ ... 

The pyroxene was composed principally of sodium and calcium, followed by silicon dioxide because of its ability to be transformed into stishovite. When undergoing a polymorphic transition to stishovite, silicon dioxide iiKreases in volume and therefore can be quickly destroyed. It is important to establish why some elements were not detected in the samples before impact, particularly carbon. To understand where it came from, the process through which siminals are obtained should be analyzed. 

The name for CaO consists of the name of the cation, calcium, followed by the base name of the anion, ox, with the ending -ide. Its full name is calcium oxide. 

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