(n.) A simple or compound principle, whose presence is necessary to produce acidity, as oxygen, chlorine, bromine, iodine, etc.
Example Sentences:
(1) All rats were examined in the conscious, unrestrained state 12 wk after induction of diabetes or acidified saline (pH 4.5) injection.
(2) they are shown to inhibit in vitro the release of iron from acidified host cell cytosol, consisting mostly of hemoglobin, a process that could provide this trace element to the parasite.
(3) This report describes the partial purification of an HMW renin from hog kidney extracts which had previously been acidified to pH 2.5.
(4) Hydrogen peroxide (1 mM) acidified pHi but no change occurred with 50 microM.
(5) One group of 6 cats was fed a basal, naturally acidifying diet without added acidifiers, and another group of 6 cats was fed 1.7% dietary phosphoric acid.
(6) The heat-deproteinated extract is acidified to pH 3.5-4 and directly analyzed by LC.
(7) Despite physiological differences, acidified milk replacer can be used successfully to raise Angora kids.
(8) The mean gastric pH of the acidified group was 3.2 compared with the group receiving regular feedings into the stomach (pH = 4.7) and the group receiving regular feedings into the duodenum (pH = 3.8) (p < .01).
(9) Aliquots of 24-h urine collections are acidified and applied to columns of Dowex 50W cation-exchange resin.
(10) Acidified Maalox 70 and Al(OH)3 were significantly more potent than unmodified agents against all four tested types of acute mucosal lesions, and this action was probably due to their 'mild irritant' effect as evidenced by extensive exfoliation of the surface epithelial cells observed microscopically after the exposure of the mucosa to these agents.
(11) Studies using a gastric chamber model demonstrated that sucralfate protected the rat gastric mucosa against hemorrhagic erosions induced by 40 percent ethanol and by acidified 80 mM sodium taurocholate.
(12) Samples are extracted with acidic chloroform, filtered through pre-acidified Hy-Flo Supercel, and cleaned up by acid-base partitioning.
(13) However, an important inhibitory effect in the most acidified fibres, cannot be excluded.
(14) The osteoclasts secrete a large amount of protons by the action of H(+)-pump on the ruffled border into the sealed resorption cavity, resulting in the acidified microenvironment under which condition the bone matrix is dissolved.
(15) With HCO3-CO2 present in the luminal bathing solution alone, proximal colon does not significantly acidify or alkalinize the serosal bathing solution.
(16) Quantitative results down to 2.0 micrograms cm-3 of Al in 0.5-cm-3 acidified samples are readily obtainable in standard 5-mm NMR tubes.
(17) Nigericin, an ionophore which acidifies the cytoplasm when cells are placed in medium at low pHe, was not toxic at pHe 6.5 or above but became very toxic as pHe was reduced below this value.
(18) Similar results were obtained when medium was acidified and chromatographed on Sephadex G-50.
(19) The acidified fetal bovine serum (FBS) produces a factor which inhibits the adipose differentiation of murine fibroblasts 3T3-F442A.
(20) Exposure to CO2 acidifies the cytosol of mitochondria-rich cells in turtle bladder epithelium.
Chlorine
Definition:
(n.) One of the elementary substances, commonly isolated as a greenish yellow gas, two and one half times as heavy as air, of an intensely disagreeable suffocating odor, and exceedingly poisonous. It is abundant in nature, the most important compound being common salt. It is powerful oxidizing, bleaching, and disinfecting agent. Symbol Cl. Atomic weight, 35.4.
Example Sentences:
(1) Ether extracts were analyzed by gas chromatography-mass spectrometry (GC-MS) and various chlorinated and non-chlorinated compounds were detected, e.g.
(2) The physical effects of chlorination as demonstrated by experiments with batters and cakes and by physicochemical observations of flour and its fractions are also considered.
(3) The efficacy of both PCBOH I and III derivatives required the presence of a hydroxyl moiety and increased directly with the degree of chlorination.
(4) Chlorine dioxide disproportionation products, chlorite and chlorate, were not active disinfectants.
(5) The photodynamic activity of bonellin, an integumentary chlorin of Bonellia viridis, is investigated.
(6) Lipopolysaccharide content correlated significantly with drug uptake and sensitivity, and it appeared to determine the degree of penetration of the cell envelope by these chlorinated phenols.
(7) Unexpectedly long retention times were noted for the chlorinated solvents, particularly for chloroforn, which showed a specific long-term retention in the cerebellum, meninges and spinal nerves, indicating interactions with specific nervous tissue receptors.
(8) Further the results of a test under practical conditions in a swimming pool are shown and the possibility to discriminate different types of waters by their chlorine demand under constant-titration.
(9) Chlorinated ethylenes are metabolized in mammals, as a first step, to epoxides.
(10) The ASI said the UK should be prepared to adapt its standards, pointing to an assessment by the European Food Safety Authority that the chemical rinses, including chlorine dioxide, were safe to eat.
(11) Studies of structure-transacylation relationships for a series of acylhydroxamic acids of chlorinated biphenyl ethers and their related compounds by rat liver N-arylacylhydroxamic acid-dependent N-acyltransferase (AHNAT) are described.
(12) The purpose of the study was to determine whether distribution of serum lipids, blood pressure or thyroid hormones differed according to the chlorination of water supply, or to its calcium and magnesium content (hardness).
(13) Chlorine (Cl2) gas is a potentially lung-damaging irritant which is used in the chemical, plastics, and paper industries.
(14) Recoveries by each technique varied depending on the sediment sample being extracted and degree of chlorination of PCB congeners.
(15) Rats have been exposed in a closed system to the chlorinated ethylenes vinyl chloride and trichloroethylene and to carbon tetrachloride as a reference compound.
(16) Environmental isolates of CB-5 were more resistant than the laboratory strain tested, and for two strains 12 and 22% of the input virus was still infectious after 100 min in the presence of free residual chlorine.
(17) Water is no longer chlorinated, rubbish isn't collected anymore.
(18) Other chlorinated hydrocarbons as decachlorobiphenyl, pentachloronaphthalene, hexachloronaphthalene and hexachlorostyrene were identified, but not quantified.
(19) Proton induced X-ray emission (PIXE) analyses were performed on single hair fibers in triplicate from 103 individuals in order to determine sulfur, zinc, calcium, and chlorine content.
(20) The compounds are N-methoxymethylated or N-ethoxymethylated using phosphorus pentoxide and dimethoxymethane or diethoxymethane, respectively, in a chlorinated solvent.