(n.) A mineral usually of a reddish brown color, and brilliant metallic adamantine luster, occurring in tetragonal crystals. In composition it is titanium dioxide, like octahedrite and brookite.
Example Sentences:
(1) Anatase and rutile are titanium dioxides (TiO2) with different crystal lattices.
(2) The hydrogen bonding ability of the surfaces of these rutiles were compared with inert rutile and quartz.
(3) Only two, both synthetic rutiles, were found to be active.
(4) These results suggested that perovskite and rutile existed at the interface between hydroxyapatite and titanium after plasma-spraying and made hydroxyapatite to bond tightly to the titanium.
(5) Biological studies of two titanium dioxide polymorphs, rutile and anatase, have produced conflicting results.
(6) The binding properties of the active rutile have been found to be consistent with those properties associated with biologically active quartz.
(7) Rutile samples containing trace amounts of nickel or chromium had an activity similar to that of pure rutile.
(8) An average of 613 million particles, of exogenous origin, per gram of dry lung tissue were found, the major classes of particles being silica, talc, aluminum silicates, and rutile.
(9) We exposed rats to an aerosol of either anatase or rutile and determined the TiO2 retention in the lung up to 132 days post exposure.
(10) The surface properties of rutile are the determinants of its activity.
(11) The other more boxlike crystals (coesite, anatase, and rutile) displayed little change in these parameters.
(12) The crystals studied were quartz, tridymite, cristobalite, coesite, anatase, and rutile.
(13) The evidence suggests that both anatase and rutile are "nuisance" dusts.
(14) Rutile and anatase induced similar effects, and both had a very low biological activity in comparison to alpha-quartz.
(15) The biological reactivity of two crystalline forms of titanium dioxide, rutile and anatase, has been compared in in vitro and in vivo assays.
(16) Titanium dioxide-polymethacrylate composites were prepared with triethyleneglycol dimethacrylate (TEGDMA), 1,6-bis(methacryloxy-2-ethoxycarbonylamino)-2,4,4-trimeth ylexane (UDMA) and rutile structure titanium dioxide.
(17) It has been reported that rutile can be considered "inert".
(18) Here we describe an XAS study of divalent cobalt (Co(II)) complexes sorbed on three different solids, gamma-Al2O3, rutile (TiO2) and kaolinite (Al2Si2O5(OH)4).
(19) Because natural and synthetic rutiles possess different surface properties, they display different activities.
(20) Pure rutile or anatase preparations show only a weak chemiluminescent response.
Titanium
Definition:
(n.) An elementary substance found combined in the minerals manaccanite, rutile, sphene, etc., and isolated as an infusible iron-gray amorphous powder, having a metallic luster. It burns when heated in the air. Symbol Ti. Atomic weight 48.1.
Example Sentences:
(1) The femoral component, made of Tivanium with titanium mesh attached to it by a new process called diffusion bonding, retains superalloy fatigue strength characteristics.
(2) Previous work has shown that corticocancellous bone chips placed in a titanium chamber with an arteriovenous vascular pedicle will result in a pre-formed vascularized bone graft.
(3) Since the introduction of osseointegrated titanium implants for bone-anchored facial and dental prostheses, an increasing number of irradiated patients are being treated with this technique.
(4) A knee simulator was used to study the wear of carbon fiber reinforced UHMWPE (Poly Two) (Poly Two is a registered trademark of Zimmer, USA) tibial and patellar components against Ti-6A1-4V, titanium nitride (TiN)-coated Ti-6A1-4V, and cobalt-chromium-molybdenum femoral components.
(5) Using the osseointegration method, a prospective study was conducted involving seven adult patients who were treated with titanium implants used as rigid anchorage units.
(6) Titanium-nickel alloy composed of 50% by weight of each metal has unique thermal shape-memory properties, with a transition temperature of 20 degrees C. Each stent consists of one wire with a diameter of 0.9 mm.
(7) New light-curable adhesive opaque resins were prepared using 4-methacryloxyethyl trimellitate anhydride (4-META), triethylene glycol dimethacrylate (TEGDMA), di (methacryloxyethyl) trimethylhexamethylene diurethane (UDMA) and titanium dioxide.
(8) 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).
(9) The nickel-titanium wires, however, showed a clear deviation form the linearity with a curviform course.
(10) We present eight cases of chemical burns of the eyes from titanium tetrachloride, an acidic corrosive liquid.
(11) The difficulties encountered in casting titanium and its alloys have until recently hindered any widespread use of titanium in restorative dentistry.
(12) A prospective controlled study was undertaken in which in 100 children a titanium ventilation tube was inserted in one ear, and a Paparella silicone tube was inserted in the contralateral ear as a control.
(13) Results demonstrated excellent bone adaptation to both titanium and ceramic implants.
(14) A new process of plasma-spraying hydroxyapatite--an entirely biocompatible, bioceramic material--onto porous, titanium alloy components promotes bone ingrowth into the components resulting in implant fixation, which is superior to current methods of cemented or cementless fixation.
(15) The titanium alloy strips were treated with citric acid, stannous fluoride, tetracycline HCl, chlorhexidine gluconate, hydrogen peroxide, chloramine T, sterile water, a plastic sonic scaler tip, and an air-powder abrasive unit.
(16) In vitro tests demonstrated approximately sevenfold greater filter length shortening (a measure of filter splaying) for the titanium GF in response to a given applied load.
(17) It was found that Ti(IV) inhibited oxidation when the substrate, procarbazine, was coordinated to titanium.
(18) In the case of titanium there were no cells in the interface which consisted instead of a proteoglycan layer of about 200-400 A width.
(19) An uncommon complication of percutaneous insertion of the titanium Greenfield filter is angulation at discharge with clustering of the limbs to one side of the vena cava.
(20) Plasma protein exchange reactions were also studied on hydrophilic titanium (Ti), vanadium (V), and silver (Ag) surfaces.