(n.) Any one of several isometric hydrocarbons, C7H16, of the paraffin series (nine are possible, four are known); -- so called because the molecule has seven carbon atoms. Specifically, a colorless liquid, found as a constituent of petroleum, in the tar oil of cannel coal, etc.
Example Sentences:
(1) The transport of two amino acid analogues, alpha-aminoisobutyric acid and 2-aminobicyclo [2,2,1]-heptane-2-carboxylic acid, which differ in their mode of uptake, was also measured following induction by DMSO.
(2) This technique includes extraction, purification using the solvents n-heptane and 0.5 M Na2CO3, and methylation by 0.1 M HCl-methanol.
(3) High concentrations of leucine or its non-metabolizable analogue, 2-aminobicyclo(2,2,1)heptane-2-carboxylic acid (BCH), stimulated insulin release into the culture medium but did not preserve glucose-stimulated insulin release.
(4) Extractions by the Twisselmann method give increasing yields in the order n-pentane, hexane, and n-heptane.
(5) Mobile phases found useful were combinations of 2-propanol and n-heptane.
(6) Consistent with the FDA guidelines in effect at the time of this study, testing was performed with five FSL (water, 3% acetic acid, 8% and 50% ethanol, and n-heptane) at 49 degrees C. Detailed comparisons were made between the migrations to foods and to FSL; following are the more relevant conclusions.
(7) 2-Amino bicyclo-(2,2,1)-heptane-2-carboxylic acid produces a remarkable inhibition of the rate of L-Tyr uptake, but alpha-methylaminoisobutyric acid does not affect the rate of transport of this amino acid.
(8) The addition of the ion-pairing reagent heptane sulfonate was shown to be necessary to achieve separation of all of these bases.
(9) The analysis, in which mercaptopurine and the internal standard, 6-methylthio-2-hydroxypurine, are chromatographed as ion-pairs with heptane-sulfonic acid, employs a simple and rapid sample preparation based on deproteination using 60% trichloroacetic acid.
(10) The recovery of rodent hairs from chocolate has been significantly improved by the introduction of an additional defatting step, substitution of 40% isopropanol for water, and substitution of mineral oil-heptane (85+15) for heptane in the trapping-off step.
(11) This may be attributable to its relatively low partition coefficient (6.1 in n-heptane).
(12) This transport was preferentially inhibited by the system L specific analogue, 2-aminobicyclo[2.2.1]heptane-2-carboxylic acid, the system T substrate tryptophan, and the sulphur homologue of tyrosine, 4-S-cysteinylphenol.
(13) The color reaction which is specific for estrogens is formed by shaking an aliquot of the heptane eluate of mestranol with a 30% methanol-sulfuric acid solution.
(14) 2-[Bicyclo(2,2,1)heptane-2-endo-3-endo-dicarboximido]-glutarimide (taglutimide, K-2004) proved to be a new sedative-hypnotic drug which did not produce any toxic effects when administered orally to mice even at a very high dosage.
(15) Infrared and NMR measurements on solutions of lithium and cesium dinonylnaphtalene sulfonates (DNNS-salts) in heptane show that the state of water in these systems is in several respects similar to its state in solid ion exchange resins and in some respects also similar to that in ordinary water.
(16) Radioligand binding affinities of four new muscarinic antagonists and six potential muscarinic agonists which possess the 2-alkyl-2-azabicyclo[2.2.1]heptane ring system have been determined in rat heart, rat brain, and m1- or m3-transfected CHO cell membrane preparations to examine the selectivity for subtypes of muscarinic receptor.
(17) A simple and convenient chromatographic method is described for the simultaneous and complete separation of the unconjugated steroids progesterone, deoxycorticosterone and 17 alpha-hydroxyprogesterone on 40-cm columns of Sephadex LH-20 using a water-saturated solvent system containing n-heptane-chloroform (1:1) plus 0.25% of ethanol.
(18) alpha Terpineol was recovered from equine tissues by extraction into heptane and detected by gas chromatography, using either flame ionization detection or pentafluoropropionic anhydride derivatization and electron capture detection.
(19) DU-6859, (-)-7-[(7S)-amino-5-azaspiro(2,4)heptan-5-yl]-8-chloro-6- fluoro-1-[(1R,2R)-cis-2-fluoro-1-cyclopropyl]-1,4-dihydro-4-oxoquinol one-3- carboxylic acid, is a new fluoroquinolone with antibacterial activity which is significantly better than those of currently available quinolones.
(20) Stomach and intestine contents and blood samples from guinea-pigs were cleaned up by use of a kieselguhr column followed by heptane-water partition.
Saturated
Definition:
(imp. & p. p.) of Saturate
(a.) Filled to repletion; holding by absorption, or in solution, all that is possible; as, saturated garments; a saturated solution of salt.
(a.) Having its affinity satisfied; combined with all it can hold; -- said of certain atoms, radicals, or compounds; thus, methane is a saturated compound. Contrasted with unsaturated.
Example Sentences:
(1) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
(2) Arterial oxyhaemoglobin saturation (SaO2) was monitored continuously during normal labour in 33 healthy parturients receiving pethidine and nitrous oxide for analgesia.
(3) The Cao-dependent Na+ efflux was half-maximally activated by [Ca2+]o = 2.0 mM in LiSW and 7.2 mM in Tris-SW; at saturating [Ca2+]o, [Ca2+]i, and [Na+]i the maximal (calculated) Cao-dependent Na+ efflux was approximately 75 pmol#cm2.s.
(4) With fields and fells already saturated after more than four times the average monthly rainfall falling within the first three weeks of December, there was nowhere left to absorb the rainfall which has cascaded from fields into streams and rivers.
(5) They retained the ability to make this discrimination when the coloured stimuli were placed against a background bright enough to saturate the rods.3.
(6) There were few significant differences between high polyunsaturated (safflower oil) and saturated fat (lard) diet groups.
(7) Saturated acyl residues predominated in lysolecithin and unsaturated ones in acids released by hydrolysis of egg lecithin.
(8) Furthermore, in induced Friend cells 100 microM Fe-SIH stimulated 2-14C-glycine incorporation into heme up to 3.6-fold as compared to the incorporation observed with saturating concentrations of Fe-Tf.
(9) The present results using approximately 12% hemoglobin concentration in 0.1 M Bistris buffer at pD 7 and 27 degrees C with and without organic phosphate show that there is no significant line broadening on oxygenation (from 0 to 50% saturation) to affect the determination of the intensities or areas of these resonances.
(10) In air-saturated solutions of DNA, yields of 8-hydroxypurines were not influenced greatly by DNA conformation.
(11) A fiberoptic flow-directed catheter inserted into the hepatic vein continuously measures hepatic venous oxygen hemoglobin saturation (ShvO2).
(12) Partially purified fatty acid synthetase produced saturated and unsaturated fatty acids with chain lengths of C10 to C18.
(13) A method using selective saturation pulses and gated spin-echo MRI automatically corrects for this motion and thus eliminates misregistration artifact from regional function analysis.
(14) All reported studies have documented small 5 to 10 mm Hg decrements of blood pressure with dietary supplementation with these fatty acids and conversion of the ratio of polyunsaturated to saturated fatty acids toward unity.
(15) The first step is the preparation of a globulin-enriched fraction by precipitation with ammonium sulfate at 50% saturation, or of an immune-complex-enriched fraction by precipitation with 5% polyethylene glycol 6000.
(16) GTP and its analogues decrease the requirement of the reaction for Ca2+ and also increase its activity at saturating Ca2+.
(17) At saturating levels of AMP (greater than or equal 2.0 mM) maximum activation is observed with 25 mM KCl, whereas at lower substrate concentrations (0.2 mM) approximately 50 mM KCl is needed for maximum activation.
(18) The kinetic pattern of changes in hemoglobin saturation, cyt.
(19) The current work utilizes an empirical relationship between HbO2 saturation measurements and reflected light oximetry, which is consistent with the two-flux theory of Kubelka and Munk (Z.
(20) Safety was assessed by clinical follow-up, continuous recording of arterial oxygen saturation during the procedure with a digital oximeter, and measuring FEV1, FEF25-75, and FVC just before and 5 min after bronchoscopy.