(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.
Selenite
Definition:
(n.) A salt of selenious acid.
(n.) A variety of gypsum, occuring in transparent crystals or crystalline masses.
Example Sentences:
(1) After a resuscitation period of 4 h, the medium was made selective by addition of either sodium thiosulfate, bile salts and iodine, or sodium selenite and L-cystine.
(3) This inhibition was partially reversed on addition of the translocated substrates sulphate or selenate to the external medium: selenite which is not translocated does not protect against DIDS inhibition.
(4) Pregnant hamsters were treated with selenite, selenate, and selenomethionine during the critical stages of embryogenesis.
(5) The less toxic seleno-di-N-acetylglycine was needed in larger molar doses and did not act as rapidly as selenite.
(6) DNA methylase isolated from selenite treated animals had only 43% of the activity as enzyme from control rats.
(7) The deposition of selenium (Se) in erythrocyte proteins was studied in rats fed Se as sodium selenite, selenocystine, selenomethionine (Se-Met), high Se wheat or selenium-enriched yeast.
(8) The effects of cadmium as cadmium acetate and selenium as sodium selenite on glucose output, cell viability, and glutathione levels in rat hepatocytes were evaluated.
(9) Thus, selenite gave higher radioactivity in myelin, then followed by the light synaptosomal and the vesicular fraction.
(10) The pre-incubation with sodium selenite reduces the respiratory index in guinea-pig cardiac mitochondria when alpha-ketoglutarate and glutamate are used as substrates.
(11) The severity of ischaemic lesion could be reduced by FRLP inhibition using antioxidative agents of sharply differing chemical nature (sodium selenite, alpha-tocopherol a.o.).
(12) An initial series of experiments, with hepatocytes in suspension, indicated that selenite-induced DNA fragmentation was oxygen dependent and could be inhibited by cyanide, HgCl2 and CuDIPS.
(13) Selenomethionine (10 ppm Se) resulted in an incidence of 13.1% malformations that were often multiple, whereas sodium selenite (10 and 25 ppm Se) resulted in 3.6 and 4.2% malformations.
(14) The increase or decrease of the sodium selenite dose by the factor ten had no effect on the preservation of the contractility of fragments of the heart-muscle after storage -196 degrees C in comparison to the control group.
(15) Percent hemolysis is marked decreased after a three-hour incubation of the whole blood with addition of selenomethionine as well as sodium selenite with tocopherole in combination before cryopreservation.
(16) The Food and Drug Administration gave approval in 1974 for the oral administration of supplemental selenium as either sodium selenite or sodium selenate to certain classes of swine and poultry.
(17) The cause of death by selenite was apparently due to the respiratory failure.
(18) Nevertheless, DNA and RNA polymerases, the enzymes responsible for this synthesis, are insensitive to inhibition by selenite.
(19) Sodium selenite is able to reduce it towards the normal level.
(20) is able to grow well up to 3% sodium selenite-containing media.