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calcium    音标拼音: [k'ælsiəm]
n. 钙

钙

calcium
n 1: a white metallic element that burns with a brilliant light;
the fifth most abundant element in the earth's crust; an
important component of most plants and animals [synonym:
{calcium}, {Ca}, {atomic number 20}]

Calcium \Cal"ci*um\ (k[a^]l"s[i^]*[u^]m), n. [NL., from L. calx,
calcis, lime; cf F. calcium. See {Calx}.] (Chem.)
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.
[1913 Webster]

Note: Calcium is widely and abundantly disseminated, as in
its compounds calcium carbonate or limestone, calcium
sulphate or gypsum, calcium fluoride or fluor spar,
calcium phosphate or apatite.
[1913 Webster]

{Calcium light}, an intense light produced by the
incandescence of a stick or ball of lime in the flame of a
combination of oxygen and hydrogen gases, or of oxygen and
coal gas; -- called also {Drummond light} and {lime
light}.
[1913 Webster PJC]

calcium
Symbol: Ca
Atomic number: 20
Atomic weight: 40.08
Soft grey metallic element belonging to group 2 of the periodic table.
Used a reducing agent in the extraction of thorium, zirconium and
uranium. Essential element for living organisms.

Calcium, NY -- U.S. Census Designated Place in New York
Population (2000): 3346
Housing Units (2000): 1134
Land area (2000): 5.586979 sq. miles (14.470208 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 5.586979 sq. miles (14.470208 sq. km)
FIPS code: 11671
Located within: New York (NY), FIPS 36
Location: 44.034761 N, 75.842114 W
ZIP Codes (1990): 13616
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Calcium, NY
Calcium

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  • Calcium and calcium supplements: Achieving the right balance
    Calcium is important for bone health throughout your life Although diet is the best way to get calcium, calcium supplements may be an option if your diet falls short Before you consider calcium supplements, be sure you understand how much calcium you need, the pros and cons of calcium supplements, and which type of supplement to choose
  • Calcium supplements: When should they be taken? - Mayo Clinic
    For people who take calcium supplements and multivitamins, it's best to take them at different times of day Calcium can affect how the body takes in the nutrients iron, zinc and magnesium And don't take a calcium supplement at the same time as a meal that's high in iron Foods high in iron include lean meat and seafood, nuts, beans, vegetables, and grains that have iron added to them If you
  • Calcium channel blockers - Mayo Clinic
    Calcium channel blockers are medicines used to lower blood pressure They stop calcium from entering the cells of the heart and arteries Calcium makes the heart and arteries squeeze more strongly By blocking calcium, calcium channel blockers allow blood vessels to relax and open Some calcium channel blockers also can slow the heart rate
  • Coronary calcium scan - Mayo Clinic
    A coronary calcium scan is a special computerized tomography (CT) scan of the heart It looks for calcium deposits in the heart arteries A buildup of calcium can narrow the arteries and reduce blood flow to the heart A coronary calcium scan may show coronary artery disease before you have symptoms
  • Parathyroidectomy - Mayo Clinic
    Parathyroidectomy often is done to treat overactive parathyroid glands, a condition called hyperparathyroidism (hi-pur-pair-uh-THIE-roy-diz-um) In many cases, only one of the parathyroid glands need to be removed to effectively treat hyperparathyroidism
  • Calcium supplements: Do they interfere with blood pressure drugs?
    In large amounts, calcium supplements taken by mouth may affect blood pressure medicines called thiazide diuretics These medicines also are known as water pills Taking large amounts of calcium with thiazide diuretics can raise the risk of a serious condition called milk-alkali syndrome Some
  • Calcium acetate (oral route) - Side effects dosage
    Calcium acetate is used to treat hyperphosphatemia (too much phosphate in the blood) in patients with end stage kidney disease who are on dialysis Calcium acetate works by binding with the phosphate in the food you eat, so that it is eliminated from the body without being absorbed
  • Hypercalcemia - Diagnosis and treatment - Mayo Clinic
    Diagnosis Hypercalcemia can cause few or no symptoms So, you might not know you have it until routine blood tests show a high level of calcium Blood tests also can show whether your parathyroid hormone level is high, which could be a sign of hyperparathyroidism If you have hypercalcemia, your healthcare professional looks for its cause You might need imaging tests of your bones or lungs
  • Vitamin D - Mayo Clinic
    Vitamin D is a nutrient the body needs, along with calcium, to build bones and keep them healthy The body can absorb calcium only if it has enough vitamin D Calcium is a major part of bones Vitamin D also has many other uses in the body It supports immune health and helps keep muscles and brain
  • Hypercalcemia - Symptoms and causes - Mayo Clinic
    Hypercalcemia is a condition in which the calcium level in the blood becomes too high Too much calcium in the blood can weaken bones and create kidney stones It also can affect the heart and brain Most often, hypercalcemia happens after one or more of the parathyroid glands make too much hormone These four tiny glands are in the neck, near the thyroid gland Other causes of hypercalcemia





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