(v. t.) Any combination or compound of metals fused together; a mixture of metals; for example, brass, which is an alloy of copper and zinc. But when mercury is one of the metals, the compound is called an amalgam.
(v. t.) The quality, or comparative purity, of gold or silver; fineness.
(v. t.) A baser metal mixed with a finer.
(v. t.) Admixture of anything which lessens the value or detracts from; as, no happiness is without alloy.
(v. t.) To reduce the purity of by mixing with a less valuable substance; as, to alloy gold with silver or copper, or silver with copper.
(v. t.) To mix, as metals, so as to form a compound.
(v. t.) To abate, impair, or debase by mixture; to allay; as, to alloy pleasure with misfortunes.
(v. t.) To form a metallic compound.
Example Sentences:
(1) Sulphides, which possibly form on silver alloys, showed cytotoxicity.
(2) The influence of mucin on the corrosion behaviour of seven typical dental casting alloys was investigated.
(3) Tests were undertaken to study resistance to tears in laser welded dental metal alloys.
(4) Increased wear-resistance of microsurgical instruments by facing, electric spark alloying and vacuum surfacing increases the working life of the instruments by 1.5-3 times.
(5) Pitting corrosion was seen on low-resistant Ni-Cr alloys, which had less Cr content.
(6) One alloy tested contained 5% indium, and the second alloy contained 10% indium.
(7) Such failures can easily be avoided by using only one alloy with good passivation characteristics instead of different alloys.
(8) The investment containing 2.0 wt% NbC showed nearly the same casting accuracy for Ni-Cr alloys for metal-ceramic restoration as the commercial phosphate-bonded investment.
(9) It was determined that the Ag-rich phase of Ag-Pd-Cu-Au alloy was preferentially attacked to form Ag2S corrosion product.
(10) The current literature, for the most part, cites the use of noble alloys as controls for trials of alternative materials.
(11) 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.
(12) Irrespective of the coated dental alloy, the coatings have pores, through which the electrolyte is in contact with the substrate material.
(13) Forty BIAS femoral stems had heads made of Co-base F 75 alloy and 18 Gustilo-Kyle femoral stems had Ti6A14V alloy heads.
(14) The occurrence of marginal spaces between the resin facing and gold alloy framework in 176 crowns and bridge retainers was studied.
(15) Base metal alloys, principally made of nickel, chromium, and beryllium have gained widespread usage, especially in the United States, due to their lower cost and higher mechanical properties.
(16) The amounts of polyethylene and methylmethacrylate debris and the histological reactions in the tissues corresponded closely with those reported in earlier studies of total hip prostheses made of stainless steel or cobalt-chromium alloy.
(17) The bond strength of the specimens brazed with the non-precious alloy was largely unaffected.
(18) The traditional alloys used as metal bases for fixed partial dentures are accompanied by various problems such as corrosion, allergy, toxicity, casting, and preparation for both patient and prosthodontist and in magnetic resonance imaging for diagnosis.
(19) The results revealed that experimental alloys inherited high early and final strength values without any significant change in their microstructure.
(20) The surface of dental alloys, on which such a composite plating was made, was analyzed by ESCA.
Recrystallization
Definition:
(n.) The process or recrystallizing.
Example Sentences:
(1) The recrystallized surface protein arrays gave a resolution of approximately 1.3 nm in projection after correlation averaging of negatively stained preparations.
(2) A synthetic precursor to a potent dopaminergic agonist, (RS)-4-hydroxy-2-(di-n-propylamino)indan, has been resolved by classical recrystallization procedures, and the absolute configurations of the enantiomers have been established by X-ray crystallographic analysis.
(3) Pure alpha-epimer was obtained by recrystallization and low pressure silica gel column chromatography combined with HPLC method.
(4) Microsomal and low speed pellets with added cofactors formed products which recrystallized with either etiocholanolone or androsterone from [3H]T or [3H]DHT, respectively.
(5) The blood-brain barrier in the rhesus monkey was opened to intravascular Evans blue-albumin, without causing brain edema or altering brain electrolytes, by perfusing 2.5 molal recrystallized D,L-lactamide into the internal carotid artery for 20--30 sec.
(6) Electrophoresis, microscopical observation and pH dependency of encapsulability of recrystallized cores revealed that the electrostatic attractive force between gelatin molecules in solution and a polymer attached to the core particle cause gelatin adsorption on the core surface to result in a great improvement in encapsulability.
(7) The porosity in lased enamel was overall very similar to that seen in enamel heated in an electric furnace to a temperature of 600 degrees C. The presence of recrystallized enamel crystals indicated a temperature rise of approximately 1000 degrees C and the grain growth indicated that a temperature > or = 1000 degrees C existed for some time after the laser irradiation.
(8) Products of cholesterol auto-oxidation were concentrated from several lots of USP-grade cholesterol by recrystallizing cholesterol from the methanol extract, retaining the mother liquor, and evaporating the residuum to dryness under vacuum.
(9) Recrystallization of the synthetic product produced material identical in all respects with natural PGE1.
(10) Experiments showed that sulphadimidine crystals recrystallized from ethanol had better dissolution and absorption characteristics than sulphadimidine crystals recrystallized from methanol.
(11) Thermal studies (DSC and HSM) showed that form II melts at 196 degrees C, while form I melts at 193 degrees C, immediately followed by a resolidification and remelt at 196 degrees C. The conversion of form II to form I was accomplished by recrystallization from ethanol or methanol, and the form I-to-form II transition was obtained by controlled heating of form I around 194 degrees C. Quantitative XRD was used to determine the polymorphic composition, with a detection limit of less than 1% of the minor form and a linearity of 0-10% form I in form II (correlation coefficient of 0.999).
(12) Microcapsule batch reproducibility depended mainly on the variation in particle size distribution of the recrystallized core material.
(13) After the administration of 3-H-testosterone to castrated hamsters, extracts from crude nuclei were separated into bound and free fractions by gel filtration of Sephadex G-25, Subsequent analysis by thin-layer chromatography and recrystallization showed that dihydrotestosterone was the predominant radioactive steroid in the bound fraction and that it increased steadily with time until 1 hr after the injection.
(14) 1,2-Dimethyl-3-hydroxy-4-pyridone (1), a crystalline oral iron chelator, forms an acetic acid solvate (2) on recrystallization from acetic acid and carbon tetrachloride.
(15) Recrystallization of the purified enzyme under different conditions readily produces a variety of single crystals.
(16) Ice recrystallization was practically absent at the temperature normally used in cryo-sectioning (-70 degrees C).
(17) A convenient, detailed procedure is given for the recrystallization of commercial dithionite from 0.1 M NaOH-methanol under anaerobic conditions.
(18) Thus, the protein penetrates partway into the bilayer, distorts the packing of the lipid fatty acid chains, and prevents recrystallization, thus decreasing the phase transition temperature.
(19) Winter stem fluid from the bittersweet nightshade, Solanum dulcamara L., also showed the recrystallization inhibition activity characteristic of the animal thermal hysteresis proteins (THPs), suggesting a possible function for the THPs in this freeze tolerant species.
(20) The chimeric proteins varied in their effectiveness of inhibiting ice recrystallization according to the number of 11-amino acid repeats present in the antifreeze moiety.