(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.
Mica
Definition:
(n.) The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, and vary in color from pale brown or yellow to green or black. The transparent forms are used in lanterns, the doors of stoves, etc., being popularly called isinglass. Formerly called also cat-silver, and glimmer.
Example Sentences:
(1) A comparison is made between the results obtained by the mica adsorption technique and those obtained by conventional preparation techniques involving fixation and staining.
(2) X-ray microprobe analysis identified particles which related to the known exposures, superimposed on a background of other particles related to smoking (kaolinite and mica) or to the general environment (silicon, titanium, and iron).
(3) The Responsible Mica Initiative aims to eradicate not only child labour but also unacceptable working conditions in the Indian mica supply chain.
(4) In all cases the inhibitory capacity of MICA on liver gluconeogenesis was significantly higher when injected intraperitoneally.
(5) This has been possible by (1) the use of specially modified SFM tips with a consistent radius of curvature of 10 nm or less, to minimize the amount of image distortion introduced by the finite dimensions of commercially available tips, (2) the optimization of a method to deposit and bind DNA molecules to the mica surface in a stable fashion, and (3) careful control of the sample humidity, to prevent solvation of the molecules and detachment from the surface by the scanning tip or stylus.
(6) Lambs fed the control and Mg-Mica diets absorbed similar (P greater than .05) quantities of Mg in the preintestinal region and less (P less than .05) than lambs fed the MgO, MgC and MgOH diets.
(7) MICA patients also reported greater overall distress than did psychiatric patients without substance abuse problems.
(8) We have imaged with scanning force microscopy in air fibronectin (Fn) molecules sprayed on mica and on polymethylmetacrylate (PMMA), the latter being extensively used as biomaterial for implants.
(9) Histopathological changes in the tracheo-bronchial lymph nodes were studied up to 365 days in guinea pigs following intratracheal injection of a suspension of mica dust.
(10) This mica was also present on filtration membranes of atmospheric air samples obtained from the San Diego Zoo.
(11) Natural objects (pebbles or pieces of mica) were also pressed into the wet clay, while in the palaces, pillars were covered with bronze plaques illustrating the victories and deeds of former kings and nobles.
(12) We present scanning force microscopic images of the virus embedded in 0.5% buffered phosphotungstic acid solution adsorbed on a freshly cleaved mica surface, and imaged under atmospheric conditions.
(13) PPG and Axalta, two of the world’s largest car paint suppliers, have joined a global initiative to purge child labour from the mica industry after a Guardian investigation linked child labour in their supply chains to Vauxhall, Volkswagen and BMW.
(14) Seven epidemiologic studies have been performed among mica-processing workers, and these studies are all cross-sectional.
(15) We have imaged single-stranded 25mer DNA that was adsorbed on treated mica or that was covalently bound with a crosslinker to a polymerized Langmuir-Blodgett (LB) film, the top monolayer of a bilayer system.
(16) Atomic force microscopy (AFM) was used to image reovirus double stranded RNA (dsRNA) deposited from diluted buffer solution onto a chemically treated mica surface.
(17) Human erythrocytes were attached to cover slips (glass or mica) treated with aminopropylsilane and glutaraldehyde, and then disrupted by direct application of a jet of buffer, which removed the distal portion of the cells, thus exposing the cytoplasmic surface (PS) of the flattened membranes.
(18) The BMW Group welcomes the fact that this [unnamed] paint supplier and its tier-two supplier have joined other companies in the Responsible Mica Initiative,” said Kai Zöbelein, sustainability spokesperson for BMW Group.
(19) The documentation of prolonged exposure to mica, the clinical and radiographic features of severe interstitial fibrosis, and the histopathologic delineation of the interstitial lesion, including spectroscopic and crystallographic verification of crystalline mica, support the causal relationship between mica and interstitial fibrosis.
(20) She adds that while there is legislation to protect children, “there is still no or little enforcement on local level ... due to corruption, lack of capacity and children who are not registered.” McQuaide says the answer to child labour in mica mining will not be found in company boycotts, audits or social projects, however well meaning, but instead in efforts that push recalcitrant governments to act.