(a.) Having the same percentage composition; -- said of two or more different substances which contain the same ingredients in the same proportions by weight, often used with with. Specif.: (a) Polymeric; i. e., having the same elements united in the same proportion by weight, but with different molecular weights; as, acetylene and benzine are isomeric (polymeric) with each other in this sense. See Polymeric. (b) Metameric; i. e., having the same elements united in the same proportions by weight, and with the same molecular weight, but which a different structure or arrangement of the ultimate parts; as, ethyl alcohol and methyl ether are isomeric (metameric) with each other in this sense. See Metameric.
Example Sentences:
(1) Structure assignment of the isomeric immonium ions 5 and 6, generated via FAB from N-isobutyl glycine and N-methyl valine, can be achieved by their collision induced dissociation characteristics.
(2) This is interpreted to mean that the release of fructose from the central complex is faster than the isomerization of the E-NADH complex.
(3) The optical and oxygen binding properties of the reconstituted myoglobins containing two isomeric monoformyl-monovinylhemins were found to be different.
(4) Line broadening detected in several of the high-field nuclear magnetic resonance spectra was attributed to cis-trans isomerization.
(5) Two new isomeric delta-lactones 2 and 3 have been isolated from the marine fungus Helicascus kanaloanus (ATCC 18591).
(6) Two isomeric hydrolysis products of this compound with only three 3(R)-hydroxymyristic acid moieties attached to the disaccharide-1-phosphate were also identified.
(7) Studies on the metabolism of nicotine by rabbit liver microsomal fractions in the presence of 0.01 M sodium cyanide have led to the characterization of two isomeric cyanonicotine compounds.
(8) Kinetic methods are outlined for the distinction between two pathways of substrate binding, which include an isomerization either of the free enzyme or of the enzyme-substrate complex.
(9) In the case of H101S, a mutant protein with measurable isomerizing activity, substrate binding with novel fluorescent properties was observed, possibly the bound pyranose form of xylose under steady-state conditions.
(10) There were consistent isomeric preferences for the R(-) configuration of both DA analogs in stimulating adenylate cyclase (D-1 sites) and in competing for high affinity binding of 3H-spiroperidol (D-2 sites) and of 3H-ADTN (DA agonist binding sites) in striatal tissue, with lesser isomeric differences in the limbic tissue.
(11) Oligosaccharides 3 and 4 and oligosaccharides 5 and 6 were isolated as unresolved isomeric mixtures in fractions B3a and B4a, respectively.
(12) Subsequent fractionation of the original compound into its two isomeric forms resulted in the identification of the isomer primarily responsible for this convulsive activity.
(13) However, the 1500 K simulation produced higher energy structures, even after minimization; in addition, this highest temperature run had many cis-trans peptide isomerizations.
(14) From model compound data, it is shown that the expected rate for isomerism is in satisfactory agreement with the rates actually observed for protein folding.
(15) Re-analysis of PCP and PCP-Na samples with high PCDD contents on a high-resolution glass capillary column showed the presence of 3 hexa- and the 2 heptachlorodibenzo-p-dioxins with nearly constant isomeric ratios.
(16) Such a genomic structure does not appear to have been reported amongst the herpesviruses--all the genomes that do not isomerize either have repeat structures only at the termini, or if present internally, have only direct repeats.
(17) The isomeric N,N-dimethyl-4,5-diphenyl-1H-pyrazole-1-propanamine was completely inactive in the primary antidepressant screens.
(18) Correspondingly, in the case of the histidine-peptides examined only mixtures of the cyclic isomeric compounds were isolated and structurally characterized by 1H-NMR analysis.
(19) In contrast to the biphasic unfolding of the wild-type nuclease, the unfolding of the mutant is represented by a single-phase reaction, indicating that the biphasic unfolding for the wild-type protein is caused by cis-trans isomerization about the prolyl peptide bond in the native state.
(20) In order to prepare a completely light-stable rhodopsin, we have synthesized an analog, II, of 11-cis retinal in which isomerization at the C11-C12 cis-double bond is blocked by formation of a cyclohexene ring from the C10 to C13-methyl.
Octane
Definition:
(n.) Any one of a group of metametric hydrocarcons (C8H18) of the methane series. The most important is a colorless, volatile, inflammable liquid, found in petroleum, and a constituent of benzene or ligroin.
Example Sentences:
(1) Alton Towers has a long record of safe operation and as we reopen, we are committed to ensuring that the public can again visit us with confidence.” A spokesman for the park said that said that X-Sector, the high-octane section of that park where the Smiler is based, would remain closed until further notice.
(2) Relative to the rate of formation of the 3-oxo intermediate trapped with N-acetylcysteine, epoxidation of octene and subsequent hydrolysis to octane-1,2-diol was over 40 times more rapid.
(3) The synthesis of two N-substituted 5,6-benzo-2-azabicyclo[2.2.2]octane analogs of benzomorphan-type analgesics via benzyne addition to appropriate N-substituted N-alkyl-2-pyridones is described.
(4) A series of 3,8-diazabicyclo (3.2.1) octanes (DBO) (1) substituted at the nitrogen atoms by acyl and aralkenyl groups, were tested in in vitro binding assays towards mu and delta opioid receptors.
(5) Not only do component b0,+ and system B0,+ and system B0,+ fail to discriminate strongly between basic and zwitterionic substrates, but their relative reactivity with bicyclic amino acids, such as 3-amino-endo-bicyclo[3.2.1]octane-3-carboxylic acid, is the reverse of transport processes in other cell types where these amino acids react strongly with Na+-independent, but not Na+-dependent, systems.
(6) The linoleic acid distribution between the micelles and octane was detected by the sedimentation method, with the concentration of linoleic acid in supernatant after settling of micelles (i.e.
(7) A preliminary biologic activity study has also been conducted, and demonstrated that the 5-(2,5-dimethyl)phenyl-6-oxa-1-azabicyclo[3,3,0]octane possesses antiinflammatory activity.
(8) ITF’s silence over Maria Sharapova’s confession does nothing for integrity Read more Relentless, high-octane, year-round sports place ludicrous demands on star athletes.
(9) Ryse offers high-octane spectacle – the quick-time kill moves are particularly delicious – but in terms of its gameplay, it's a little hit and miss.
(10) Polyvinyl alcohol (PVA) mounting medium containing paraphenylenediamine (PPD), n-propyl gallate (NPG), or 1,4-diazobicyclo(2,2,2)-octane (DABCO) was compared with PVA alone or buffered glycerol with regard to capacity for preservation of immunofluorescence preparations.
(11) Stereoselective esterification of octan-2-ol was observed for all three lipases with Chromobacterium viscosum (CV) lipase yielding product with an enantiomeric excess of 92%.
(12) Using Octane+ P. putida as the donor, the transfer of most chromosomal markers was shown to be independent of OCT transfer, whereas the mobilization of the octanoate catabolism genes (octanoic and acetate) was dependent on OCT plasmid transfer.
(13) In the presence of 2-N-methyl-amino-1,4-naphthoquinone in octane, acting as electron acceptor, the negative charges were transferred from water to octane following the oxidation of NADH, succinate and ascorbate.
(14) Humphrey said that BT's coverage would have a different feel from Sky's high-octane approach, and would aim to be more inclusive and family-friendly.
(15) Adherence of Aa cells to octane varied from 60-90%, depending on the medium in which they were grown, age of the culture and the buffer in which the assay was carried out.
(16) A new (-)-4-oxo-2,6-bis-(3',4'-methylenedioxy phenyl)-3, 7-dioxabicyclo[3, 3, 0] octane lignan, genkdaphin was isolated from the leaves of Daphne genkwa Sieb.
(17) CP-96,345 [(2S, 3S) cis-2-(diphenylmethyl)-N-((2-methoxyphenyl)-methyl)-1- azabicyclo[2.2.2]octan-3-amine] belongs to a new class of nonpeptide antagonists of the substance P (SP) receptor.
(18) Six muscarinic ligands which have a 3-amino- or 3-methyl-1,2,4-oxadiazol-5-yl groups attached to the 8-methyl-8-azabicyclo[3.2.1]oct-2-ene or 8-methyl-8-azabicyclo[3.2.1]octane head group show binding constants between 2.04 x 10(-6) and 1.79 x 10(-5) M in rat heart, rat brain, and m1- or m3-transfected CHO cell membrane preparations.
(19) A quencher of singlet oxygen, 1,4-diazobicyclo-[2,2,2]octane was also inactive.
(20) Since octanal is an intermediate in the oxidation of octanol to octanoic acid, the ability of semicarbazide to inhibit the metabolism of octanol to octanoic acid was examined.