(n.) An oxide of a nonmetallic body or an organic radical, capable of forming an acid by uniting with the elements of water; -- so called because it may be formed from an acid by the abstraction of water.
Example Sentences:
(1) The 1-0-methylalduronic-acidmethylesters, obtained by the methanolysis of the polysaccharides, are reduced with boronhydrid to the corresponding methyl glycosides; there are split with acid to the aldoses, which are converted in pyridine with hydroxylamine to the aldoximes and than with acetic anhydride to the aldonitrilacetates, which can be separated by gaschromatography without difficulty.
(2) Several aminoacyl-tRNA synthetases are herein shown to catalyze the AMP----ADP and ADP----ATP exchange reactions (in the absence of tRNAs) by utilizing a transfer of the gamma-phosphate of ATP to reactive AMP and ADP intermediates that are probably the mixed anhydrides of the nucleotide and the corresponding amino acid.
(3) The aza analogue (RS)-3-hydroxy-2,5-pyrrolidinedione-3-acetic acid (6) of the five-membered citric anhydride (2) was prepared in the sequence citric acid----2-phenyl-1,3-dioxolan-4-one-5,5-diacetic acid (1)----citric acid beta-amide (3)----6 and used to resolve ambiguities in the mechanism of the citrate synthase reaction.
(4) The method involves solvent extraction of the compounds from plasma, derivatization with pentafluoropropionic anhydride and subsequent separation on a 3% OV-17 column.
(5) The 6alpha- and 6beta-testosterone derivatives were attached to BSA via a mixed anhydride coupling employing tributylamine and i minus-butylchlorocarbonate.
(6) It is concluded that the side product generated during the reaction of Fmoc-chloride with glutamic acid which is used for analysis of the latter is the N-protected internal anhydride and not the pyroglutamate as reported in the literature.
(7) When a larger excess of ethoxyformic anhydride was used for the lipase reaction, 2.8 histidine residues were ethoxyformylated and characterised as His-354, His-156 and His-75, which resulted in an 85% inhibition of the tributyrylglycerol hydrolysis by the enzyme.
(8) The three compounds, which all possess carboxylic acid group, were converted into their hexafluoro-2-propyl esters with hexafluoropropan-2-ol-pentafluoropropionic anhydride as reagent.
(9) 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.
(10) Five microliters of acetic anhydride was added to the serum to convert all 5-ASA to Ac-5-ASA.
(11) The equilibrium constant for formation of the anhydride from the thil ester of enzyme and methyl 3-mercaptopropionate is 75 times larger than the equilibrium constant of 2.2 for the formation of N,O-diacetylhydroxylamine from acetohydroxamic acid and acetyl-CoA.
(12) For the quantitative determination of sulfolipids having long sugar chains, it is necessary to treat thin-layer chromatography plates with acetic anhydride before color development.
(13) We have changed the net charge to -6 by acylation with acetylcitric anhydride (a new acylating agent); this anionic derivative forms tetrameric helix at neutral pH, without salt, and at relatively low concentration, conditions under which the cationic MLT does not become helical.
(14) A sensitive potentiometric monitoring method was developed that permits the continuous measurement of the disolution profiles of methyl vinyl ether-maleic anhydride-acid copolymers and salt derivatives.
(15) Thromboxane B2 (TxB2) was coupled with beta-D-galactosidase by mixed anhydride reaction.
(16) To obtain a volatile histidine derivative it has been found necessary to add an antioxidant and to heat samples with ethoxyformic anhydride prior to injection.
(17) Bronchial provocation studies using alcoholic-saline solutions of phthalic anhydride and phthalic anhydride dust resulted in immediate airway obstruction.
(18) Acylation of glutamate dehydrogenase with ethoxyformic anhydride at pH6.1 led to the modification of three histidine residues with a corresponding loss of half the original activity.
(19) The extract of plasma or urine was treated with diazomethane followed by trifluoroacetic anhydride to convert I and II into their methyl ester trifluoroacetyl derivatives.
(20) The reaction was monitored by capillary gas chromatography after derivatization by trifluoroacetic anhydride.
Water
Definition:
(n.) The fluid which descends from the clouds in rain, and which forms rivers, lakes, seas, etc.
(n.) A body of water, standing or flowing; a lake, river, or other collection of water.
(n.) Any liquid secretion, humor, or the like, resembling water; esp., the urine.
(n.) A solution in water of a gaseous or readily volatile substance; as, ammonia water.
(n.) The limpidity and luster of a precious stone, especially a diamond; as, a diamond of the first water, that is, perfectly pure and transparent. Hence, of the first water, that is, of the first excellence.
(n.) A wavy, lustrous pattern or decoration such as is imparted to linen, silk, metals, etc. See Water, v. t., 3, Damask, v. t., and Damaskeen.
(v. t.) An addition to the shares representing the capital of a stock company so that the aggregate par value of the shares is increased while their value for investment is diminished, or "diluted."
(v. t.) To wet or supply with water; to moisten; to overflow with water; to irrigate; as, to water land; to water flowers.
(v. t.) To supply with water for drink; to cause or allow to drink; as, to water cattle and horses.
(v. t.) To wet and calender, as cloth, so as to impart to it a lustrous appearance in wavy lines; to diversify with wavelike lines; as, to water silk. Cf. Water, n., 6.
(n.) To add water to (anything), thereby extending the quantity or bulk while reducing the strength or quality; to extend; to dilute; to weaken.
(v. i.) To shed, secrete, or fill with, water or liquid matter; as, his eyes began to water.
(v. i.) To get or take in water; as, the ship put into port to water.
Example Sentences:
(1) These surveys show that campers exposed to mountain stream water are at risk of acquiring giardiasis.
(2) 5-Azacytidine (I) stability was increased approximately 10-fold over its stability in water or lactated Ringer injection by the addition of excess sodium bisulfite and the maintenance of pH approximately 2.5.
(3) And this is the supply of 30% of the state’s fresh water.” To conduct the survey, the state’s water agency dispatches researchers to measure the level of snow manually at 250 separate sites in the Sierra Nevada, Rizzardo said.
(4) We report a case of a sudden death in a SCUBA diver working at a water treatment facility.
(5) We assessed changes in brain water content, as reflected by changes in tissue density, during the early recirculation period following severe forebrain ischemia.
(6) The water is embossed with small waves and it has a chill glassiness which throws light back up at the sky.
(7) The reduction rates of peripheral leukocytes, lung Schiff bases and lung water content were not identical in rats depleted from leukocyte after inhalation injury.
(8) And that, as much as the “on water, operational” considerations, is why we are being kept in the dark.
(9) Excretion of inactive kallikrein again correlated with urine flow rate but the regression relationship between the two variables was different for water-load-induced and frusemide-induced diuresis.
(10) The Hamilton-Wentworth regional health department was asked by one of its municipalities to determine whether the present water supply and sewage disposal methods used in a community without piped water and regional sewage disposal posed a threat to the health of its residents.
(11) Comprehensive regulations are being developed to limit human exposure to contamination in drinking water by the United States Environmental Protection Agency (EPA) under the authority of the Safe Drinking Water Act (SDWA).
(12) Undaunted by the sickening swell of the ocean and wrapped up against the chilly wind, Straneo, of Woods Hole Oceanographic Institution, one of the world's leading oceanographic research centres, continues to take measurements from the waters as the long Arctic dusk falls.
(13) Streaming is shown to occur in water in the focused beams produced by a number of medical pulse-echo devices.
(14) The role of adrenergic agents in augmenting proximal tubular salt and water flux, was studied in a preparation of freshly isolated rabbit renal proximal tubular cells in suspension.
(15) These studies also suggest at least two mechanisms for uric acid reabsorption; one sodium dependent, the other independent of sodium and water transport.
(16) Proposals to increase the tax on high-earning "non-domiciled" residents in Britain were watered down today, after intense lobbying from the business community.
(17) The amount of water, creatinine, electrolytes, proteins, and enzymes were higher during the day (up to three fold, p always less than 0.05), while equal amounts of amino acids were excreted in the day and the night period.
(18) It is especially efficacious in evaluating patients with cystic lesions, especially those with complex cysts not clearly of water density.
(19) 'The only way that child would have drowned in the bath is if you were holding her under the water.'
(20) Changes in regional cerebral blood flow (rCBF) were measured over 254 cortical regions during caloric vestibular stimulation with warm water (44 degrees C).