(n.) A volatile liquid consisting of three parts of carbon, six of hydrogen, and one of oxygen; pyroacetic spirit, -- obtained by the distillation of certain acetates, or by the destructive distillation of citric acid, starch, sugar, or gum, with quicklime.
Example Sentences:
(1) On the other hand, immunofluorescence in anterior pituitary cells was faint and detected in only 2 of 28 patients with Graves' disease (7.1%) after absorption of their sera with rat liver aceton powder.
(2) The acetone, pyruvate and alpha-ketoglutarate hydrazone were identified.
(3) Rat heart acid acetone powder was subjected to ion exchange chromatography on CM-cellulose.
(4) The acetone pellet was solubilized using deoxycholate (DOC) and Thy-1.1 was purified by use of a Lens culinaris lectin affinity column and an AcA-34 gel filtration column.
(5) Defatting with acetone as part of the regimen for cutaneous disinfection does not improve microbial removal or reduce the incidence of catheter-related infection, but increases cutaneous inflammation and patient discomfort.
(6) Diffusion coefficients measured on images of water and acetone phantoms were consistent with published values.
(7) Results of H-agglutination inhibition tests demonstrated that SA could not be detected on the flagellin molecule when the flagellar filaments were dissociated to flagellin monomers by heating or treatment with urea, sodium dodecyl sulfate, HCl, or acetone, although SA could be detected on short flagellar fragments obtained by milder heat treatment.
(8) Thus, with elution by either ATP or pyrophosphate, actin has been purified in one step from extracts of acetone-dried muscle powder.
(9) The mechanism suggested leads to photoemissive triplet excited acetone as expected from the cleavage of an intermediate dioxetane.
(10) The vasoactive substance was obtained only by extraction with dichloroacetic acid, hydrochloric acid, and with methylene chloride, but not with aqueous extract, or by ether, ethanol, or acetone extraction.
(11) 1966.-Antibody responses of rabbits to H, O, and Vi antigens did not differentiate vaccine K (acetone-killed and dried) from vaccine L (heat-phenolized and dried) relative to human efficacy.
(12) The fast fraction, isolated and purified by means of cellulose acetate electrophoresis, precipitated in acid acetone and treated with urea 8 M and mercaptoethanol, revealed an anomalous beta chain.
(13) Acetaldehyde and acetone were also detected in the irradiated squalene, which may be formed via a 6-methyl-5-hepten-2-one intermediate.
(14) Amebae were fixed in methanol-formaldehyde or absolute acetone at -15 degrees C before or after stimulation with micromolar cyclic AMP at room temperature (20-25 degrees C).
(15) The kaolin-induced activation of factor XII (XII) to XIIa was studied in plasminogen-free human citrated plasma treated with acetone in the presence of benzamidine 7.5 mM.
(16) Leaching the lyophilized mitochondrial fraction with either hexane or acetone increased substantially the yields of the metabolites.
(17) Urinary immunoreactive LH and FSH were measured in acetone extracts of 3 h collections prior to, during, and immediately after a 3 h infusion of 100 mug LH-RH.
(18) An acid protease from Monascus kaoliang was purified by consecutive applications of fractional acetone precipitation, batchwise CM-cellulose method and DEAE-cellulose column chromatography.
(19) Suspension of acetone powder in Tris-HC1 buffer prepared from brain homogenate also disclosed chemiluminescence to some extent, whereas liposomes made of extracted brain lipid did not.
(20) These findings agree with an earlier Japanese study in showing some mild decrements on behavioural performance tests with exposures to acetone at 250 ppm.
Solvent
Definition:
(a.) Having the power of dissolving; dissolving; as, a solvent fluid.
(a.) Able or sufficient to pay all just debts; as, a solvent merchant; the estate is solvent.
(n.) A substance (usually liquid) suitable for, or employed in, solution, or in dissolving something; as, water is the appropriate solvent of most salts, alcohol of resins, ether of fats, and mercury or acids of metals, etc.
(n.) That which resolves; as, a solvent of mystery.
Example Sentences:
(1) We have compared two new methods (a solvent extraction technique and a method involving a disposable, pre-packed reverse phase chromatography cartridge) with the standard method for determining the radiochemical purity of 99Tcm-HMPAO.
(2) Twelve strains of the Crimean hemorrhagic fever (CHF)-Congo group of viruses the Bunyaviridae family were investigated with respect to sensitivity to lipid solvents and temperature, pathogenicity for animals, interactions with cell cultures and antigenic relationships.
(3) The conformations of each peptide in various solvents were determined by CD and ir spectroscopy in order to relate immunological to structural properties.
(4) The kinetics of bimolecular decay of alpha-tocopheroxyl free radicals (T) was studied by ESR mainly in ethanol and heptanol solvents.
(5) The purity and configuration of each isomer of the free acid and N-chloroacetylated derivative were ascertained by: (a) paper chromatography in five solvent systems, (b) elemental analysis, (c) Van Slyke nitrous acid determination of alpha-carbonyl carbon, and (d) Van Slyke ninhydrin determination of alpha-carbonyl carbon, and (e) optical rotation.
(6) As compared with solvent-treated control, no significant increases were observed in the number of revertant colonies in all tester strains in both systems with and without mammalian metabolic activation (S9 Mix).
(7) The results are summarized in Table I, indicating that the ratio of formation of the cis product (2) increases as a solvent becomes more polar.
(8) These data are discussed in relationship to the chemical mechanism of GSSG reduction and the identity of the proton-transfer step whose rate is sensitive to solvent isotopic composition.
(9) It was readily soluble, however, in nonpolar solvents such as n-hexane and chloroform.
(10) Small amounts (approximately 1% of substrate) of two 25(OH)D3 metabolites, which comigrated with 5(E)- and 5(Z)-19-nor-10-keto-25-hydroxyvitamin D3 on two HPLC solvent systems, were synthesized by HL-60 cells, independently from 1,25(OH)2D3 treatment or stage of cell differentiation.
(11) 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.
(12) The significance of the present findings on the mutual suppression of metabolism between benzene and toluene is discussed in relation to solvent toxicology and biological monitoring of exposure to the solvents.
(13) CZP reduced the incidence of convulsions only after the larger dose, but plain solvent (propylene glycol, ethanol, water) was equally effective.
(14) The method involves solvent extraction of the compounds from plasma, derivatization with pentafluoropropionic anhydride and subsequent separation on a 3% OV-17 column.
(15) RF values were determined in several solvent systems.
(16) From the previously observed results of preferential interactions for salting-out salts with proteins, it was shown that the free energy of the protein is increased by addition of the salts and this unfavorable free energy is smaller for the proteins bound to the columns because of their smaller surface area exposed to solvent; i.e., the bound form of the proteins is thermodynamically more stable.
(17) Such an 'inert tube' model may be adequate to describe the inhalation and exhalation kinetics of inert vapours, for example non-polar solvents which have a low water solubility.
(18) Results indicate that the rachitogenic factor in rye is not present in the ash portion of the grain, that it can be largely overcome by water extraction and penicillin supplementation, and that an organic solvent extraction has no effect.
(19) The possible occupational cause of the disease, as more solvents in the mud have the structure of aromatic hydrocarbons is discussed.
(20) Reductions in dissolution rates in a continuous-flow system could best be interpreted by assuming that they reflected changes in the area of the hydrophilic solid exposed to the solvent.