What's the difference between calcine and gypsum?

Calcine


Definition:

  • (v. i.) To reduce to a powder, or to a friable state, by the action of heat; to expel volatile matter from by means of heat, as carbonic acid from limestone, and thus (usually) to produce disintegration; as to, calcine bones.
  • (v. i.) To oxidize, as a metal by the action of heat; to reduce to a metallic calx.
  • (v. i.) To be converted into a powder or friable substance, or into a calx, by the action of heat.

Example Sentences:

  • (1) Infectivity of linear lambdaDNA molecules is proved to be about a hundred times higher in calcinated E. coli K12 (lambai434) than in E. coli K12(lambda-): the levels of transfection were 1-3-10(7) and 1-2-10(5) infective centers per 1 mug DNA, respectively.
  • (2) The lithium content of the tissues was assayed by flame spectrophotometry of calcinated biopsy material taken from the epidermis, the dermis and the subcutaneous adipose tissue from 4 of our 5 cases.
  • (3) For some metals the analysis can be directly achieved by means of atomisation of the biological liquid in a flame or in a graphite furnace; for other metals it is necessary a treatment of the sample to separate the metal from the rest of the matrix, which can be: calcination, microcalcination, mining.
  • (4) The results obtained from the ethanol-treated rats were similar to those obtained in experiments on control rats fed on diets not containing calcinated bone meal.
  • (5) In those working with calcined clay, there was an increased prevalence of abnormality of the FEV1, but not the FVC, when compared to both wet and dry processors and which could not be explained by either cigarette smoking or the presence of pneumoconiosis.
  • (6) Dehydration conditions similar to those employed in wet calcination of gypsum appeared to be produced under atmospheric pressure when NaCl was present.
  • (7) He observed that metals gain weight during their calcination (oxidation) and concluded that air is taken up during this process.
  • (8) The magnitude of abnormality in the calcined clay workers was, however, unlikely to lead to disabling impairment.
  • (9) The results reveal that arsenic contents in pig native copper are about 10 times of those in the calcination samples.
  • (10) TCP capsules with an outer diameter of 0.8 cm and an inner diameter of 0.4 cm were prepared by compressing calcined materials in a cylindrical dye at a compression load of 700 Kg.
  • (11) Administration of vitamin D in a dose of 400 IU and increase of calcium consumption up to 110-120 mg and of phosphorus to 45-57 mg per kg body weight at the expense of calcinated cottage introduction into the diet provide for the optimal levels of 25-hydroxycholecalciferol and calcium in the blood of these children.
  • (12) In Experiment 2, urinary Mg excretion on d 4 and 5 of the collection was lower for sheep fed the brine oxide than for those fed sulfate or oxide from calcined magnesite.
  • (13) The most toxic material tested was BeSO4, followed by BeO calcined at 500 degrees C, then BeO calcined at 1000 degrees C. An in vitro dissolution technique was used to measure the relative solubility of the BeO particles.
  • (14) In CT, diagnosis was based on the detection of a formation with a capsule containing calcinates and air masses.
  • (15) Bodies found in acts of war or natural disasters are sometimes impossible to identify for police or legal purposes, notably because of calcination or putrefaction.
  • (16) Therefore, calcining the two radionuclides together in an aerosol altered the kinetics of both following inhalation in rats, but most dramatically for 244Cm.
  • (17) Hereby the tissue calcination will be defined from the real ossifications and the direct exogene shades.
  • (18) Fetuses were fully calcinated and ash weight and calcium content determined.
  • (19) Although each study suffers from some deficiencies, as is common in such retrospective studies, the findings in concert strongly indicate that nickel emitted from the calcining and sintering operations is a potent carcinogen resulting in nasal and pulmonary cancers.
  • (20) The present paper reports the determination of Fe, Cu, Zn, Mn and As in complex prescription decoctions of ochre and calcined ochre by atomic absorption spectroscopy.

Gypsum


Definition:

  • (n.) A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.

Example Sentences:

  • (1) Ten alginates and seven gypsum products were tested.
  • (2) It is recommended that manufacturers pay more strict adherence to the requirements of the ISO Standard with regard to the availability and recommendation of suitable compatible gypsum products, and also that perhaps the actual Standard should be modified to be more realistic in its demands, and more discriminatory in its evaluation procedure.
  • (3) The diffusive properties of alginate membranes prepared by the interfacial reaction of sodium alginate solution with gypsum substrates were studied.
  • (4) The tensile strength of a dental gypsum was measured indirectly using both the diametral and the double-punch tests.
  • (5) Radiation shielding tables were developed from the calculated transmissions through Pb, concrete, gypsum, steel, plate glass, and water, using a technique which eliminates the "add one HVL" rule.
  • (6) The use of alginate and a recently introduced modified gypsum product as investing media, as well as centrifugation of the pour resin into the flask, offer no significant advantages over the originally introduced procedure.
  • (7) And unlike beach sand, the sands here, made up of eroded gypsum crystals, do not get scorching hot in the sun and can usually be walked on in bare feet, even on the hottest days.
  • (8) The best way of sterilization is to make a gypsum model from the hydrocolloid impression and place it in the furnace for 30 min in 60 degrees C.
  • (9) The results show that the dosage of gypsum should be 10-20 grams, preferably ground to at least 60 mesh powder, the fine powder over 60 mesh is not to be pre-decocted, but the coarse powder of 40 mesh needs pre-decocting.
  • (10) The content of calcium ion Ca2+ in gypsum decoction has been determined with coordination titration.
  • (11) Gypsum produced only 5% and granular dusts none at all.
  • (12) The fibrous dusts (other than gypsum) resulted in a high incidence of mesothelioma (30 - 67%).
  • (13) In a small area (approximately 40 km2) against the mountains there is a concentration of over 20 large plants: oil refinery; iron and steel mill; fertilizer, cement, and gypsum production; coke kilns; and chemical, paint, and many other ancillary plants.
  • (14) Although the tissue conditioners generally exhibited higher deformations and lower gypsum compatibility than specified by ADA Specification No.
  • (15) Dehydration conditions similar to those employed in wet calcination of gypsum appeared to be produced under atmospheric pressure when NaCl was present.
  • (16) (4) Different gypsum products responded differently to bonding agents.
  • (17) of gypsum board, lead, and plate glass at this radiation level was 1.8, 0.020, and 1.3 cm, respectively.
  • (18) Part I of this study considered the ability of alginate and gypsum combinations to reproduce a line on a test block.
  • (19) The advantages of the halo-fixateur therapy compared against extension and immobilization in Minerva gypsum are that secondary correction of positioning is possible; that functionally disturbing and extended spondylodeses are avoided; that care of the polytraumatized patient is facilitated; that X-ray films are easy to assess; and that the period of hospitalization is greatly reduced.
  • (20) We used a profilometer to determine the roughness average, maximum roughness, and waviness of the dies, control, gypsum, and silicone test surfaces.