(n.) An inflammable gaseous hydrocarbon, C4H10, of the marsh gas, or paraffin, series.
Example Sentences:
(1) A further 23 Syrian Kurds , among them women and children, were shot dead in the nearby village of Barkh Butan, the group said.
(2) The target concentrations for the butane:pentane mixtures were 4500 and 1000 parts per million (ppm), while 5200 and 1200 ppm were set for the gasoline distillation fraction.
(3) Stopped-flow studies of oxidation of butan-1-ol and propan-2-ol by NAD(+) in the presence of Phenol Red and large concentrations of yeast alcohol dehydrogenase give no evidence for the participation of a group of pK(a) approx.
(4) The purification procedure includes butan-1-ol extraction of yolk lipids, phosphocellulose chromatography of the water-soluble proteins, DEAE-cellulose chromatography at pH 7.4 and hydroxyapatite column chromatography.
(5) The inhibitory activity of 2-phosphono-butane 1,2,4 tricarboxylic acid (PBTA) in the formation of hydroxyapatite (HA) was studied in vitro and in vivo.
(6) Inhibition by organic proteinase inhibitors, including E-64 [L-trans-epoxysuccinyl-leucylamido-(4-guanidino)butane] and activation of the enzyme by 2-mercaptoethanol and dithiothreitol are characteristic of cysteine proteinases.
(7) The bile-pigment chromophores of C-phycoerythrin (phycoerythrobilin) and C-phycocyanin (phycocyanobilin) were cleaved from their respective proteins with boiling methanol or butan-1-ol.
(8) Thiochrome is then extracted with butan-1-ol, which results in fewer co-extracts and greater selectivity.
(9) We investigated the longitudinal dispersion of helium (He), methane, acetylene, butane, sulfur hexafluoride, and octafluorocyclobutane (C4F8) in a clear plastic model of the human bronchial airways.
(10) While with some other heterocyclic and aromatic aldehydes, and under the same conditions, the corresponding analogs of alpha, delta-bis(thiazolidinidione-2,4-N-arylidenehydrazone-4-arylidene-5-yl-3) butane (3) were obtained.
(11) This substance from Brevibacterium ammoniagenes has now been identified as 2-methyl-butan-1,2,3,4,-tetraol-2,4-cyclopyrophosphate, which is accumulated in the cell under certain conditions in concentrations of of about 50 mM.
(12) In all patients there was a reluctance to admit that butane vapour was in use as an intoxicant immediately prior to the injury.
(13) A short-term response immediately after exposure was observed for subjects exposed to butane.
(14) The case of a 17 year old abuser of butane aerosols who developed fulminant hepatic failure after taking a proprietary engine or carburetor cleaner is described.
(15) The volatile substances abused were gas fuels (24%), mainly butane; aerosol sprays (17%); solvents in glues (27%); and other volatile substances, such as cleaning agents (31%).
(16) Diisopropylphosphofluoridate (Dip-F) and phenylmethanesulphonylfluoride (Pms-F) are inhibitors of "serine" proteinases, and L-trans-epoxysuccinylleucylamido-(4-guanido)-butane (E-64) is an inhibitor of "thiol" proteinases.
(17) The therapeutic effect of cis-1, 1-cyclobutane dicarboxylato-(2R)-2-methyl-1,4-butane diamine platinum (II) (NK 121) on 3 human yolk sac tumors of the ovary (YST-1, YST-2 and YST-3), which were transplanted into nude mice, was compared with that of cisplatin (CDDP).
(18) They form a regular series with different degrees of glycosylation (mainly owing to N-acetylneuraminic acid), of charge, of molecular weight, of stability to temperature, to pH and to urea, of minimal requirement for Mg(2+) and of extractability by butan-1-ol.
(19) The structure skeleton consists of four parts, the naphthalene nucleus connected to the 5-membered ring, a 17-membered ring connected to C2, a dimethyl butane diacid extended out from C20, beta-D-3,4-OO' methylenedigitoxose passing through an oxygen bridge O6 and linked to C27 of ansa ring.
(20) L-1-Chloro-4-phenyl-3-tosylamido[1-13C]butan-2-one (Tos-[1-13C]Phe-CH2Cl) and Tos-[1-13C,2H2]Phe-CH2Cl were prepared and used to alkylate delta-chymotrypsin.
Methane
Definition:
(n.) A light, colorless, gaseous, inflammable hydrocarbon, CH4; marsh gas. See Marsh gas, under Gas.
Example Sentences:
(1) A new type of Escherichia coli mutant which shows increased sensitivity to methyl methane sulfonate but not to UV light or to gamma rays was isolated after mutagenesis with N-methyl-N'-nitro-N-nitrosoguanidine.
(2) The possibility that mammalian DNA topoisomerase II is an intracellular target which mediates drug-induced DNA breaks is supported by the following studies using 4'-(9-acridinylamino)methane-sulfon-m-anisidide (m-AMSA): (a) a single m-AMSA-dependent DNA cleavage activity copurified with calf thymus DNA topoisomerase II activity at all chromatographic steps of the enzyme purification; (b) m-AMSA-induced DNA cleavage by this purified activity resulted in the covalent attachment of protein to the 5'-ends of the DNA via a tyrosyl phosphate bond.
(3) These parameters are compared with those of various model groups and compounds: CH2, peptide, methane, ethane, and the 1--13 N-terminal fragments of ribonuclease.
(4) It could perhaps be used in natural gas stations, where a synthetic gas is first produced by reacting the methane with steam to produce carbon dioxide and hydrogen.
(5) It is suggested that acetylene reduction assays may not be accurately applied to samples containing methane oxidizing bacteria.
(6) Certain methane- and methanol-oxidizing bacteria were grouped on the basis of serological cross-reacting enzyme specificities.
(7) The growth yield was 5.8 mg of cells (dry weight) per mmol of methane and was not dependent on the kind of methyl compound used as substrate.
(8) Various inhibitors that affected methane formation (e.g.
(9) The new methane rules – which will be formally unveiled on Wednesday - are the last big chance for Obama to fight climate change.
(10) Completely demineralized root powder was subjected to solutions of varying pH and ionic strength: (a) 0.1 M acetic acid, pH 4.0, (b) 0.1 M acetic acid + 0.15 M KCl, pH 4.0, (c) 0.1 M Hepes, pH 7.0 or to (d) 0.1 M Hepes + 0.15 M KCl, pH 7.0 at 37 degrees C. The surfaces of intact root specimens were exposed to 0.1 M acetic acid, pH 4.0 (which resulted in erosive lesions) or to 0.1 M lactic acid, 0.2 mM methane hydroxy diphosphonate, pH 5.0 (which produced subsurface lesions) at 37 degrees C. After incubation, the extracts were analysed for soluble collagen and the insoluble matrices were treated with trypsin at 15 degrees C to determine the denatured collagen.
(11) Particularly an automatic apparatus for monitoring total organic substances less methane, and one, employing specific detection and selective columns for the automatic and continuous determination of light sulfur compounds, are described.
(12) The ratio of methane (CH4) to CO2 in the abomasum gas was higher than that in the rumen.
(13) Hydrogen and methane are products of colonic bacterial metabolism.
(14) Other sources were monosodium methylarsenate (4 cases), dodecyl ammonium methane arsonate (5 cases), and other compounds (12 cases).
(15) The gas produced contained between 56 and 59% of methane.
(16) The present results reveal aspects of how both protein B and substrate can regulate electron transfer into and out of the hydroxylase component of methane monooxygenase.
(17) Using a complex, but soluble supplement (whey powder) it is shown that reproducible incremental measurements can be made and that the supplement used gives increases in production of characteristic end-products only (carbon dioxide, methane, acetic and butyric acids).
(18) Nickel did not alter methane production, carcass characteristics or ruminal volatile fatty acid proportions.
(19) Barack Obama has defied a Republican Congress to move ahead on his climate agenda on Wednesday, cracking down on methane emissions from America’s oil and natural gas boom.
(20) Twenty-six Acinetobacter calcoaceticus proline auxotrophs were isolated after ethyl methane sulfonate mutagenesis.