(n.) Olefiant gas, or ethylene; hence, by extension, any one of the series of unsaturated hydrocarbons of which ethylene is a type. See Ethylene.
Example Sentences:
(1) This can be interpreted as the result of polarizing inductive (I-) and mesomeric (M-) effects exerted by Cl- as well as by CH3-substituents on the olefinic double bond.
(2) The following trans compounds were synthesized and their IC50 values were measured: homologated trans-isomers with one methylene chain (47 and 53), an olefin derivative (58), and optically active derivatives [-)-11 and (+)-23).
(3) The combined rate of formation of anomalous alcoholic and olefinic products was 10% the Vmax determined for the conversion of 1 to 2.
(4) These results would indicate that incorporation of a reactive olefinic compound to a lipidic microphase does not provide "per se" an efficient protection towards its attack by ozone.
(5) These changes were correlated to the decrease of the ratio of saturated to olefinic fatty acids in the mycelium, suggesting that alcohols and other polar lipophilic compounds can interfere with the biosynthesis and the function of the cytoplasmic membrane in Streptomyces.
(6) 108, 3837-3838), suggesting that the mechanism of epoxidation of olefins by methane monooxygenase differs at least in part from that of cytochrome P-450.
(7) Patchoulol synthase copurified with the ability to transform farnesyl pyrophosphate to cyclic olefins (alpha- and beta-patchoulene, alpha-bulnesene, and alpha-guiaene) and this observation, plus evidence based on differential inhibition and inactivation studies, suggested that these structurally related products are synthesized by the same cyclase enzyme.
(8) Oxidation of VI to the 24-aldehyde VII, followed by Wittig olefination with isopropyltriphenylphosphonium iodide gave 3 beta-acetoxy-5 alpha-cholesta-8(14),24-dien-15-one (VIII), which was hydrolyzed to the free sterol IX.
(9) The starting olefins were coated on a variety of solid substrates, exposed to known ozone concentrations and then analyzed for the corresponding aldehyde with a gas chromatograph equipped with a flame-ionization detector.
(10) This new analog (CD270), which contains no olefinic double bonds, is characterized by its chemical stability to light and atmospheric oxidation.
(11) This approach, used in conjunction with tandem mass spectrometry, allows the determination of olefinic bond location.
(12) The unexpected inactivity of 1f (E = C6H4-p-NO2) as a Michael acceptor and its very powerful competitive inhibition of papain were rationalized by molecular graphics which showed the nitrophenyl moiety rotated out of conjugation with the olefin and interacting instead with the hydrophobic S1' region of papain.
(13) Detection is based on the mass increase accompanying replacement of ethylene by other gas-phase olefins to form the corresponding olefin-substituted products.
(14) With cyclase II, the doubly labeled substrate gave bicyclic olefins with 3H:14C ratios of from 13 to 20, indicating preferential, but not exclusive, utilization of the (3S)-enantiomer in this case.
(15) That is, arene.Cr(CO)3 complex-catalyzed 1,4-hydrogenation of the dienes 13 and 58, obtainable from the Corey lactone in good yields, under high H2 pressure afforded the exocyclic olefins 14 and 61 stereospecifically in excellent yields, and these intermediates were converted to therapeutically useful carbacyclin (2) and its analogs 3-7 in a usual way.
(16) Resonance lines of the olefinic, methylene, methyl and carboxyl carbon nuclei are sufficiently characteristic to permit unequivocal designation of double bond position for each isomer.
(17) These deal with: (a) reactive properties of nucleic acids, including their component bases; (b) biological recognition processes, including drug-receptors and enzyme-substrate interactions; and (c) chemical carcinogenesis, referring specifically to the polycyclic aromatic hydrocarbons and halogenated olefins and their epoxides.
(18) For olefins an initial electron transfer to oxidized haemprotein gives a substrate cation radical.
(19) The structure of the adduct was determined by 1H-NMR spectrometry, showing that thiolate attacked the olefinic double bond of the antibiotic.
(20) A series of lysophosphatidylethanolamine analogs containing saturated and methylene-interrupted cis-olefinic fatty chains was synthesized by phosphorylation and phosphonylation of respective fatty alcohols.
Series
Definition:
(n.) A number of things or events standing or succeeding in order, and connected by a like relation; sequence; order; course; a succession of things; as, a continuous series of calamitous events.
(n.) Any comprehensive group of animals or plants including several subordinate related groups.
(n.) An indefinite number of terms succeeding one another, each of which is derived from one or more of the preceding by a fixed law, called the law of the series; as, an arithmetical series; a geometrical series.
Example Sentences:
(1) A series of human cDNA clones of various sizes and relative localizations to the mRNA molecule were isolated by using the human p53-H14 (2.35-kilobase) cDNA probe which we previously cloned.
(2) says Gregg Wallace opening the new series of Celebrity MasterChef (Mon-Fri, 2.15pm, BBC1).
(3) An unsaturated fatty acid auxotroph of Escherichia coli was grown with a series of cis-octadecenoate isomers in which the location of the double bond varied from positions 3 to 17.
(4) We report a series of experiments designed to determine if agents and conditions that have been reported to alter sodium reabsorption, Na-K-ATPase activity or cellular structure in the rat distal nephron might also regulate the density or affinity of binding of 3H-metolazone to the putative thiazide receptor in the distal nephron.
(5) A series of eight patients with multiple meningiomas is presented.
(6) Other articles in the series will look at particular legal problems in the dental specialties.
(7) Before issuing the ruling, the judge Shaban El-Shamy read a lengthy series of remarks detailing what he described as a litany of ills committed by the Muslim Brotherhood, including “spreading chaos and seeking to bring down the Egyptian state”.
(8) Mitonafide is the lead compound of a new series of antitumor drugs, the 3-Nitronaphthalimides, which have shown antineoplastic activity in vitro as well as in vivo.
(9) Time-series analysis and multiple-regression modeling procedures were used to characterize changes in the overall incidence rate over the study period and to describe the contribution of additional measures to the dynamics of the incidence rates.
(10) Comparison of developmental series of D. merriami and T. bottae revealed that the decline of the artery in the latter species is preceded by a greater degree of arterial coarctation, or narrowing, as it passes though the developing stapes.
(11) A new propaganda video by Islamic State featuring the British photojournalist John Cantlie, in which he says it is the “last film in this series”, has appeared online.
(12) In a series of compounds with H2-antihistaminic activity, a conformational analysis was performed based on force field calculations.
(13) Probability distributions are fitted to these data and it is shown that the log-series distribution best fits the data for two subgroups.
(14) We present a mathematical model that is suitable to reconcile this apparent contradiction in the interpretation of the epidemiological data: the observed parallel time series for the spread of AIDS in groups with different risk of infection can be realized by computer simulation, if one assumes that the outbreak of full-blown AIDS only occurs if HIV and a certain infectious coagent (cofactor) CO are present.
(15) Mary's grief, which lasts for about the first half of the two-hour premiere special, is the finest work of the series so far by Michelle Dockery.
(16) This series of tests included tests for pathologic nystagmus, saccades, smooth pursuit, and optokinetic nystagmus, as well as bithermal caloric testing and rotational testing.
(17) And perhaps it’s this longevity that accounts for her popularity: a single tweet from Williams (who has 750,000 followers) about the series will prompt a Game Of Thrones news story.
(18) The four patients treated in our series recovered fully; the single fatal case constituted an unrecognized case of pneumococcal endocarditis.
(19) These unusual fractures are not easily detected on the routine three-view "hand-series."
(20) Recently, we have designed a series of simplified artificial signal sequences and have shown that a proline residue in the signal sequence plays an important role in the secretion of human lysozyme in yeast, presumably by altering the conformation of the signal sequence [Yamamoto, Y., Taniyama, Y., & Kikuchi, M. (1989) Biochemistry 28, 2728-2732].