(n.) An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight 40. Symbol Ca.
Example Sentences:
(1) In studies of calcium metabolism in 13 unselected patients with untreated sarcoidosis all were normocalcaemic but five had hypercalcuria.
(2) After stimulation with lipopolysaccharide and calcium ionophore A23187, culture supernatants of clones c18A and c29A showed cytotoxic activity against human melanoma A375 Met-Mix and other cell lines which were resistant to the tumor necrosis factor, lymphotoxin and interleukin 1.
(3) The half-life of 45Ca in the various calcium fractions of both types of bone was 72 hours in both the control and malnourished groups except the calcium complex portion of the long bone of the control group, which was about 100 hours.
(4) Calcium alginate dressings have been used in the treatment of pressure ulcers and leg ulcers.
(5) of PLA2 caused marked degranulation of mast cells in the rat mesentery which was facilitated by addition of calcium ion (10 mM) but antagonized by pretreating with three antiinflammatory agents.
(6) Thus adrenaline, via pre- and post-junctional adrenoceptors, may contribute to enhanced vascular smooth muscle contraction, which most likely is sensitized by the elevated intracellular calcium concentration.
(7) It includes preincubation of diluted plasma with ellagic acid and phospholipids and a starting reagent that contains calcium and a chromogenic peptide substrate for thrombin, Tos-Gly-Pro-Arg-pNA.
(8) The results show that endolymph is extremely inhomogenous with respect to calcium potentials.
(9) The occupation of the high affinity calcium binding site by Ca(II) and Mn(II) does not influence the Cu(II) binding process, suggesting that there is no direct interaction between this site and the Cu(II) binding sites.
(10) This was unlike the action of the calcium channel blocker, cadmium, which reduced the calcium action potential and the a.h.p.
(11) Increases in extracellular calcium antagonized the negative inotropic effect.
(12) Plasma membranes were isolated from rat kidney and their transport properties for sodium, calcium, protons, phosphate, glucose, lactate, and phenylalanine were investigated.
(13) In experiments performed to determine whether PtdIns(4,5)P2 hydrolysis induced by TRH may have been caused by the elevation of [Ca2+]i, the following results were obtained: the effect of TRH to decrease the level of PtdIns(4,5)P2 was not reproduced by the calcium ionophore A23187 or by membrane depolarization with 50 mM K+; the calcium antagonist TMB-8 did not inhibit the TRH-induced decrease in PtdIns(4,5)P2; and, most importantly, inhibition by EGTA of the elevation of [Ca2+]i did not inhibit the TRH-induced decrease in PtdIns(4,5)P2.
(14) The distribution of gelsolin, a calcium-dependent actin-severing and capping protein, in the retina of the developing and adult rabbit was studied.
(15) In K+-depolarized basilar arteries, ifenprodil competitively antagonized the response to Ca2+, and this was enhanced by pre-incubation in calcium hopantenate.
(16) Thirty of the 32 women of the calcitonin group and 27 of 28 women of the calcium group finished treatment.
(17) The influence of calcium ions on the electrophoretic properties of phospholipid stabilized emulsions containing various quantities of the sodium salts of oleic acid (SO), phosphatidic acid (SPA), phosphatidylinositol (SPI), and phosphatidylserine (SPS) was examined.
(18) Hypercalcitoninemia was the most pronounced in patients with cardiac rhythm disorders and a simultaneous reduction in total serum calcium.
(19) The effects of low doses of dihydropyridine (DHP) calcium channel antagonists nimodipine, nifedipine, (-)-R-202-791, and amlodipine, the DHP calcium channel agonist BAY K 8644 were investigated on clonic convulsions to pentylenetetrazole (PTZ) in mice.
(20) A comprehensive review of the roentgenographic features of calcium pyrophosphate crystal deposition disease (pseudogout) is presented.
Dolomite
Definition:
(n.) A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. It includes much of the common white marble. Also called bitter spar.
Example Sentences:
(1) Assuming that the 14C taken up by the corpuscles was in the form of 14CO3(2-), the ratio of Ca2+ to CO3(2-) accumulation in the corpuscles approximates the ratio of these constituents in dolomite: CaMg(CO3)2.
(2) It also has catered chalets in Italy, such as Chalet Heidi in Arabba , in the Dolomites, catered for the week 3 February for £629pp.
(3) Examples of uroliths that have been uncommonly encountered in dogs include xanthine, dolomite, tetracycline, and sulfonamides.
(4) It is shown that the solubility of dolomites formed by precipitation at ordinary temperatures is such that it allows for the formation of dolomite in tooth enamel during in vivo mineralization.
(5) On the basis of the investigations a complex filter made of silver plated minerals--dolomite and fluorite--has been developed.
(6) Pistorius was born in 1986 in Johannesburg to Sheila and Henke, who works in dolomite mining.
(7) • lenzerheide.com , guided rides including bike rental from £44 Book it: STC (stc.co.uk) has a week B&B in Lenzerheide from £948pp, including flights from London to Zurich, and return rail transfers Snowshoeing, Alta Badia, Italy Facebook Twitter Pinterest Many mountain regions claim a long history of snowshoeing, but none has the carbon-dated proof the Italian Dolomites have.
(8) Liming acid soils with dolomitic lime increases forage Mg by supplying Mg and by raising soil pH.
(9) The following soil applications were made during each of 3 yr: 1) none, 2) dolomitic limestone and 3) fluidized-bed combustion residue (FBCR).
(10) It was the magical bluestone - spotted dolomite, which when newly quarried is dark blue speckled with brilliant white stars of quartz - that made Stonehenge the Lourdes of prehistoric Europe, they believe.
(11) Calcium supplements (calcium phosphate dibasic, oyster shell preparations with and without supplemental magnesium, calcium lactate, calcium carbonate with and without supplemental iron and vitamins, dolomite and chelated calcium with and without chelated magnesium) and nonfat dry milk were the sole sources of calcium in nutritionally adequate diets.
(12) Eight calcitic and three dolomitic limestones were examined for particle size and reactivity with hydrochloric acid at pH 3.5 and 5.5.
(13) • Contact swimtrek.com for prices Running in the Dolomites Facebook Twitter Pinterest Photograph: Augusto Mia Battaglia Marathons are a popular inspiration for a running holiday, with visitors combining a trip abroad with a 26-mile run anywhere from New York to Amsterdam, Paris to Pyongyang .
(14) A solid-state chemical model is derived to estimate the solubility of dolomites having different degrees of cation ordering.
(15) In study 1, weanling male rats were fed either nonfat dry milk or CaHPO4, dolomite or a calcium chelate with supplemental lactose or sucrose for 27 d. In study 2, weanling male rats were fed diets based on milk or lactose-hydrolyzed milk for 28 d or in one meal labeled with 45Ca.
(16) • icekart.at , from £10 a session Book it: Iglu Ski has four nights half-board in Saalbach from £477, including flights and transfers Hot-air ballooning, Italian Dolomites Facebook Twitter Pinterest The picturesque Dolomites are at their most stunning when covered in snow and viewed from the basket of a floating hot-air balloon.
(17) Quartz, calcite, feldspar, smectite, inter-stratified phases, kaolinite, amphibole, muscovite and dolomite are other contaminating minerals.
(18) Bronchoscopic examination may reveal white gelatinous material in the bronchial lumen, mucosal ulcerations, polypoid inflammation, scattered green-blue pigmented areas and narrowed bronchi with post-stenotic dilatation, some of which resemble colored dolomite caves.
(19) • Find it on Google Maps 4 Pozze Smeraldine, Dolomites Facebook Twitter Pinterest Photograph: Michele Tameni In the Dolomiti Friulane natural park , down in the Cellina valley on the way to the village of Barci are many wild, unspoilt pools and gorges.
(20) • Find it on Google Maps 2 Spiaggia Giamaica, Lombardy Facebook Twitter Pinterest Photograph: Michele Tameni In this region of great lakes, the Dolomites, and stunning green valleys, the landscape is perfect for trekking, having fun in the sun, or a dip in the water.