(n.) An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmetals, or metalloids. No sharp line can be drawn between the metals and nonmetals, and certain elements partake of both acid and basic qualities, as chromium, manganese, bismuth, etc.
(n.) Ore from which a metal is derived; -- so called by miners.
(n.) A mine from which ores are taken.
(n.) The substance of which anything is made; material; hence, constitutional disposition; character; temper.
(n.) Courage; spirit; mettle. See Mettle.
(n.) The broken stone used in macadamizing roads and ballasting railroads.
(n.) The effective power or caliber of guns carried by a vessel of war.
(n.) Glass in a state of fusion.
(n.) The rails of a railroad.
(v. t.) To cover with metal; as, to metal a ship's bottom; to metal a road.
Example Sentences:
(1) In this study of ten consecutive patients sustaining molten metal injuries to the lower extremity who were treated with excision and grafting, treatment with compression Unna paste boot was compared with that with conventional dressing.
(2) The LD50 of the following metal-binding chelating drugs, EDTA, diethylenetriaminepentaacetic acid (DTPA), hydroxyethylenediaminetriacetic acid (HEDTA), cyclohexanediaminotetraacetic acid (CDTA) and triethylenetetraminehexaacetic acid (TTHA) was evaluated in terms of mortality in rats after intraperitoneal administration and was found to be in the order: CDTA greater than EDTA greater than DTPA greater than TTHA greater than HEDTA.
(3) Our recurrences are due to local infections, removing the metal strut too early, i.e.
(4) "Acoustic" craters were produced by two laser pulses delivered into a saline-filled metal fiber cap, which was placed in a mechanically drilled crater.
(5) These results indicate that the inhibition of CarAc by heavy metals occurs by binding of the sulfhydryl on the enzyme by the metals.
(6) The consequences of proved hypersensitivity in patients with metal-to-plastic prostheses, either present prior to insertion of the prosthesis or evoked by the implant material, are not known.
(7) In general, enzyme activity was strongly reduced by heavy metal inorganic cations; less strongly by organometallic cations, some anions, and certain pesticides; and weakly inhibited by light metal cations and organometallic and organic compounds.
(8) EGTA was ineffective in removing calmodulin from particulate preparations, but treatment with the tervalent metal ion La3+ resulted in a loss of up to 98% of calmodulin activity from these preparations.
(9) Sift the cocoa powder over the top and lightly but thoroughly fold it in with the metal spoon.
(10) The results also suggest that both alkali metals most probably have been delivered to the suckling pups and some of their toxic effect was retarded.
(11) The radioprotective action in E. coli ATCC 9637 of ascorbate added to media containing the weak sensitizer, tetracycline (effect described by Pittillo and Lucas (1967)), was found to be dependent on the presence of metal catalysts of the autoxidation of ascorbate.
(12) This study introduces a simple in vitro arrangement to measure current densities of implant metals.
(13) A rubber cuff was fixed on the metal cylinder and let an opening of 8 cm, simulating the cervix uteri.
(14) Since the enzyme requires a metal ion (Co2+) we suggest that the RNA and heparin are inhibitory by virtue of their capacity to chelate the Co2+.
(15) Lesions of allergic contact type could not be induced in the oral mucosa to any of the metal salt preparations.
(16) As yet the observations demonstrate that workers exposed in their occupation to heavy metals (cadmium, lead, metalic mercury) and organic solvents should be subjected to special control for detection of renal changes.
(17) This study investigates the photoneutron field found in medical accelerator rooms with primary barriers constructed of metal slabs plus concrete.
(18) While a clearcut relationship cannot be established between heavy metal music and destructive behavior, evidence shows that such music promotes and supports patterns of drug abuse, promiscuous sexual activity, and violence.
(19) The physiologically important metal ion for catalysis is Mg2+; however, Mn2+ supports in vitro activity, though at a reduced level.
(20) We support the view that catalysis by metalloenzymes may be a reflection of the chemistry of the metal ion itself as a Lewis acid, and that perhaps too much emphasis has been placed on supposed special characteristics (such as strains, "entasis") of the enzyme-metal ion association.
Tribasic
Definition:
(a.) Capable of neutralizing three molecules of a monacid base, or their equivalent; having three hydrogen atoms capable of replacement by basic elements on radicals; -- said of certain acids; thus, citric acid is a tribasic acid.
Example Sentences:
(1) Stromelysin consists of three domains the amino terminal propeptide(s) domain contains the tribasic amino acid sequence RRK which is important in the proteolytic activation of this zymogen by trypsin-like serine proteases.
(2) Tribasic calcium phosphate was chosen as a model for solid bone samples, which are stained with doxorubicin in patients who have received long-term doxorubicin therapy.
(3) Four anhydrous composites--(1) tribasic calcium phosphate (TCP 50%) and triethylene glycol dimethacrylate (TEGDM), (2) silanated lithium aluminum silicate (SS, 75%) and TEGDM, (3) barium sulfate [BaSO4 (70%) and poly(methyl methacrylate) (PMMA)], and (4) silane-coated barium glass (SBG) (75%)--and PMMA were employed in the water-sorption studies at 37 degrees C. The effect of 5% 4-META on the diffusion and uptake of water was studied at 37 degrees C. The data conformed approximately to Fick's laws of diffusion.
(4) Subjects ingested either 1 gm of tribasic sodium phosphate or a glucose placebo four times daily for 3 days prior to performing either an incremental maximal cycling test or a simulated 40-km time trial on a computerized race simulator.
(5) Addition of tribasic magnesium phosphate [Mg3(PO4)2 X 8H2O] prevented the repression of cyclase and markedly stimulated cephalosporin production.
(6) The resulting mixture of chelated and unchelated nucleotides and tribasic acids effected coordinated control of citrate synthase, aconitase, isocitrate dehydrogenase, succinyl CoA synthetase, fumarase, and nucleoside diphosphokinase, because Mg2+-chelates are generally substrates whereas unchelated species are inhibitors.
(7) Our data have defined the cleavages for the signal peptide and propeptide and demonstrate that a tribasic sequence can be used to eliminate N-terminal heterogeneity in this molecule.
(8) Cleavage at a tribasic residue processing site generates a urotensin II with the primary structure: Ala-Gly-Thr-Thr-Glu-Cys-Phe-Trp-Lys-Tyr-Cys-Val.
(9) Calcium carbonate, and particularly tribasic calcium phosphate tablets, are not recommended for patients with achlorhydria.
(10) The rare disease of pulmonary alveolar microlithiasis is characterized by innumerable microscopic stones, mainly of tribasic calcium phosphate, within the pulmonary alveoli.
(11) A Langmuir adsorption isotherm at pH 7.4 and the maximum adsorption capacity of tribasic calcium phosphate were established.
(12) The adsorption of doxorubicin hydrochloride, a potent antitumor agent, on solid tribasic calcium phosphate was studied in vitro.
(13) Subjects ingested 1000 mg of tribasic sodium phosphate or a placebo four times daily for 6 d. A maximal running stress test or a 5-mile performance run was performed randomly on either the 3rd or the 6th d. Test sessions were separated by a 2-wk washout period and repeated with alternating phosphate and placebo regimens.
(14) Both forms of tribasic isocitrate, free and metal chelated are used as alternative substrates with different turnover and affinity.
(15) ATP analogues that dissociate only as far as the tribasic form were also able to inhibit channel activity.
(16) In addition, three sites were identified in the mature protein core of STC (two dibasic, one tribasic) that may be acted upon by endopeptidases to produce truncated forms of the hormone.
(17) One peptide equivalent to the previously reported C-terminal CgB (CCB) is released by processing at a tribasic segment.
(18) Hyroxyapatite (HOAp), tribasic calcium phosphate, crystals induced typical signs of inflammation when injected into the footpad of the rat.
(19) An additional derivative, containing the tribasic sequence from the human protein C propeptide preceding Ser+1, was secreted with full processing of the propeptide.
(20) The formation constant of the complex between cadmium and tribasic isocitrate varies from 860 M-1 at mu=0.16 to approximately 24,500 M-1 at infinite dilution.