(n.) The earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond.
Example Sentences:
(1) Guinea pig splenic lymphocytes and peritoneal macrophage cultures were incubated with quartz (DQ12), Corundum and aspirin as prostaglandin inhibitor.
(2) 3M discs and the rough corundum discs caused significantly more surface roughness of the Cosmic surface.
(3) The maximum values of tensile strength were measured when 200-250 microns corundum was used.
(4) Experiments carried out over a long period have shown that corundum ceramic is a strong material and is biologically inert.
(5) At desired time of incubation, the bacteria were washed with water, disintegrated with powdered corundum and in resulting cell-free extracts L-asparaginase activity was determined by the Conway method.
(6) Corundum produced no significant effect on the enzyme activity.
(7) The results showed that quartz induced a substantial increase of lipid peroxide in PAMs compared with both samples (dust-free or exposed to corundum).
(8) No adverse effects of corundum ceramics were noted.
(9) Corundum, which is sapphire, is number nine.” “The relative hardness of sapphire is 400, compared to quartz which is 100, so it is a lot harder than quartz,” Alford stressed.
(10) The results were compared with quartz dust as the known fibrogenic dust and emery dust (Corundum) was used as a control dust.
(11) Raman spectroscopy showed that both the socket and the beads are composed of alpha-Al2O3 (corundum), while the bioactive glass (alkaline and alkaline earth alumosilicate with a small quantity of zirconium oxide) showed this to have an intermediate structure between that of vitreous silica and that of the alkaline and alkaline earth disilicate glasses.
(12) All the lungs contained quartz and silicates and in most of the necropsy cases carborundum and corundum could also be shown.
(13) Quartz treatment did not alter esterase activity whereas corundum exposed cultures showed a decline.
(14) NH, a producer of glucoamylase, were cultivated in the presence of various supporting materials (three microspherical zeolitic particles, alpha-alumina and foam corundum).
(15) The results obtained showed that a significant inhibition of antibody formation to human albumin took place in animals with experimental silicosis in comparison with control rats that were given physiological saline or corundum as established by passive haemagglutination reaction according to Boyden as well as enhancement of the intensity of the delayed-type hypersensitivity to tuberculin.
(16) A complex of implanted dentures was manufactured with a corundum ceramic compound "Kador" made in the USSR.
(17) According to the present in vitro study it is possible to bond NPM alloy restorations with Panavia Ex several days after air brushing with corundum.
(18) Implants of corundum ceramic have been used in the treatment of 38 patients with bony tumours of the limbs.
(19) The patient's spine has been fixed by means of implant, made of corundum porous ceramic, metal plate and lavsan band.
(20) The values of the R(a) and Rmax were grown proportionally with the grain of corundum, but it was not resulted in the same increase of the tensile strength.
Ruby
Definition:
(n.) A precious stone of a carmine red color, sometimes verging to violet, or intermediate between carmine and hyacinth red. It is a red crystallized variety of corundum.
(n.) The color of a ruby; carmine red; a red tint.
(n.) That which has the color of the ruby, as red wine. Hence, a red blain or carbuncle.
(n.) See Agate, n., 2.
(n.) Any species of South American humming birds of the genus Clytolaema. The males have a ruby-colored throat or breast.
(a.) Ruby-colored; red; as, ruby lips.
(v. t.) To make red; to redden.
Example Sentences:
(1) Nine years of clinical experience of the application of the Q-switched ruby laser to the removal of tattoos is presented.
(2) 8.59pm BST Mary and Paul would have received death threats if Ruby had won, I think.
(3) Other lasers that are in clinical use, such as the red ruby and near-infrared Nd-YAG lasers, can provide selective treatment only when the epidermis is cooled concurrently.
(4) But Ruby Tweedie, another local resident, said: "There have been so many doubts about his guilt that it's only fair that the man, who has only a few months to live, should be shown mercy."
(5) These changes are detected by variations in the rate of decay of the excited singlet state of pyrene after pulsation with a 10-nsec ruby laser flash.
(6) No recombinants were detected among 410 offspring produced from a backcross mating segregating for Ldh-1 and ru-2 (ruby-eye-2).
(7) NWR may be celebrating its ruby anniversary but will an organisation born to alleviate the lot of the housewife survive to drink to its golden when, politically and personally, she is apparently dead and buried?
(8) Ruby Tandoh faced online abuse during her appearances on The Great British Bake Off – and now the 21-year-old philosophy student has been set up for a fresh mauling by the Daily Mail .
(9) The argon laser and the ruby laser have been used to open the pigment layer in three cases of surgically incomplete peripheral iridectomy.
(10) 8.16pm BST Ruby's look so attractive but it's Mary who says this, not Paul.
(11) Louise Brock was keen for her daughter Ruby, who has Down's syndrome, to go to a mainstream school.
(12) Ruby confirmed several points: arthrosis is inevitable after a variable delay (10 years for the most optimistic).
(13) A 19-year-old man sustained a bilateral coagulation of the macula caused accidentally by a ruby laser rangefinder mounted on a tank.
(14) Ruby Wax identifies with it In the BBC's 2003 Big Read, the crimson-haired comedian chose The Catcher in the Rye as her favourite book.
(15) Then the final thickness of the sections is exactly adjusted by screwing three rubies out of the holder's bottom.
(16) 8.57pm BST Ruby is in floods, Mel and Sue are administering hugs.
(17) Ruby-eye (ru) is an autosomal recessive in linkage group 2.
(18) The reason, according to former federal agents and experts on rightwing extremism, is a vivid institutional memory of the bloodshed that marked standoffs with radical rightwingers in Ruby Ridge , Idaho, in 1992 and at Waco , Texas, the following year.
(19) The intensity-dependent transmission of primary leaves of Triticum aestivum seedlings at lambda = 694 nm was measured with single pulses of a Q-switch ruby laser.
(20) Five genetically distinct mutants with increased bleeding times and abnormal dense granules were used: maroon (ru-2mr), light ear (le), ruby eye (ru), beige (bg1), and pale ear (ep).