(n.) One of a class of caustic bases, such as soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
Example Sentences:
(1) Significant amounts of 35S-labeled material were lost during the alkali treatment.
(2) 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.
(3) Rabbits eating Rabbit Chow excreted a very alkaline urine, but rats eating the same diet excreted much less alkali when expressed per kilogram of body weight.
(4) From these findings it is concluded that cardiac performance and carbohydrate metabolism are accelerated in alkali and depressed in acid perfusion, and that myocardial metabolism could be affected by pH not only secondary to the change of performance but also by itself.
(5) Electrophoresis, Sephadex chromatography, and ultrafiltration studies showed that the alkali-soluble, water-soluble cell wall antigen is comprised of lipid, polysaccharide, and protein and has a molecular weight range of 30,000 to 50,000.
(6) [Na+],[Cl-)and[alkali]were determined in the alkaline gastric juice samples (pH greater than 7.0).
(7) Plants placed in pure acid and alkali solutions were also able to neutralize the medium.
(8) TFP produced a more discrete block in the repair of alkali-labile lesions in DNA.
(9) Activation of GV by monochromatic 450-nm radiation causes two specific DNA changes in human P3 cells in culture as shown by alkaline elution techniques: single-strand breaks (i.e., alkali-labile sites plus frank strand scissions) and DNA-to-protein covalent bond crosslinks.
(10) Keratan sulphate was isolated from bovine intervertebral disc and bovine nasal septum after hydrolysis with proteinases and treatment with dilute alkali.
(11) It was necessary to avoid CsCl banding of procapsids in their preparation as this treatment altered both their pI and their sensitivity to alkali dissociation into 14S subunits.
(12) In these muscles, two kinds of mRNA for the cardiac myosin alkali light chain, identical with those in ventricular muscle, were expressed and their relative amount in each tissue was almost the same as that in ventricular muscle.
(13) The enzymes were detected and characterized by agarose gel electrophoresis of alkali-denatured digestion products.
(14) The alkali cations selectivity sequence induced by ETH1811 is Li+ (1) greater than Na+ (0.08) greater than K+ (0.02) greater than Cs+ (0.008).
(15) When the monomer was further dissociated into constituent subunits in strong alkali or at high concentrations of SDS, the CD spectrum disappeared almost completely, indicating loss of the asymmetric interactions of the chromophoric heme a with its immediate environments, consisting of the subunit assembly.
(16) Addition of alkali to the culture media results in decrease of cell GAD activity, whereas increase of enzyme level occurs only in cells growing in unbuffered media.
(17) Chain breaks as measured in alkali were also measured and found to be enhanced by the dye; the ratio of breaks per iodine loss was 0.9.
(18) Alkali hydrolysates of elastins contained a radioactive peak that was eluted between proline and leucine.
(19) Under limiting concentration conditions, BLM and NCS induce alkali-labile sites in DNA without a subsequent cleavage of the chain.
(20) Hydrolysis with mild alkali yields anhydroretinol, as it does for synthetic retinyl phosphate, with absorption maxima at 388, 368, and 346 nm.
Leach
Definition:
(n.) See 3d Leech.
(n.) A quantity of wood ashes, through which water passes, and thus imbibes the alkali.
(n.) A tub or vat for leaching ashes, bark, etc.
(v. t.) To remove the soluble constituents from by subjecting to the action of percolating water or other liquid; as, to leach ashes or coffee.
(v. t.) To dissolve out; -- often used with out; as, to leach out alkali from ashes.
(v. i.) To part with soluble constituents by percolation.
(n.) See Leech, a physician.
Example Sentences:
(1) Updated at 2.53pm GMT 2.48pm GMT 'Tricky job, well done' - IoD Graeme Leach , chief economist at the Institute of Directors, said: This was a tricky job, well done by George Osborne.
(2) In this study two soft coals obtained from mines in which workers had high and low incidences of CWP were leached with aqueous base and acid to remove their acidic and basic components.
(3) Leaching the lyophilized mitochondrial fraction with either hexane or acetone increased substantially the yields of the metabolites.
(4) Worse, the CFL contains mercury, which according to the EU's own regulations cannot be discarded in ordinary waste, lest the mercury leach into the water supply.
(5) A steady decline in the incidence with an increase in the preponderance of male cases was observed toward the west, reaching the lowest figures (male: 17.2 cases per 100,000 population; female: 5.5 per 100,000) in the Caspian rain belt, with its heavily leached soils and somewhat subtropical characteristcs.
(6) In spite of the leaching and contamination effects described in the literature--even for chrysotile fibrils taken from the lung, elemental spectra do not differ essentially from the asbestos standard.
(7) Contamination of cells by impurity atoms that may leach from electrodes was measured by atomic-absorption spectrophotometry and found to be negligible.
(8) "The UK economy faces a difficult period over the coming years, but if the government holds firm with the implementation of the spending review, long-term growth and employment prospects will be significantly improved," said Graeme Leach, chief economist and director of policy at the IoD.
(9) Once the pollution has ceased, it would appear that the arsenic is rapidly leached away, with a return to ecological normality this recovery was surprisingly rapid and complete.
(10) The surface is stabilized, i.e., leaching is retarded, by the rapid Ca,P-accumulation within the silica structure before apatite crystals are observed on the surface.
(11) In Dr Leach's book, a 13-year-old talking about the fall-out from her parents' break-up says: "I felt I'd vanished."
(12) Some cells, however, showed evidence that intracytoplasmic materials had been leached from the cells.
(13) Diethyl phthalate in the desiccant in 100-count bottles of brand A levothyroxine sodium tablets appeared to have leached into the tablets.
(14) With the leach tank incident in December there were questions raised about our environmental performance.
(15) The tendency of composites to leach filler elements almost linearly with time, could be used to generate a constant release rate of such therapeutic elements over time.
(16) Dissolution is incongruent, probably because most of the leached species can derive both from the matrix (polysalt gel) and the partly reacted glass particles.
(17) There was no evidence of energy-dependent extrusion of water or ions from either equilibrated rat or rabbit renal cortical slices leached at 0.5 degrees C and then reincubated at 25 degrees C in choline Ringer.7.
(18) Leach has also just been appointed advisory chair of next year's Guardian Edinburgh International Television Festival, reinforcing the sense that she and Twofour have earned their place at the TV industry's top table.
(19) Upon harvest (three months after application), a total of 49.2% of the applied radiocarbon was recovered: 2.0% in the plants, 46.9% in the soil, and 0.3% in the leaching water (depth greater than 50 cm); less than 0.1% was in the grains (0.464 ppm).
(20) The power requirements for initial leaching conditions were also calculated.