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Showing 1 to 20 of 46 for “"1,3-butadiene"”.
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Understanding the Effect Of 1,3-Butadiene on Human Lung Fibroblasts: Does Exposure to 1,3-Butadiene Induce Senescence?
… (DEB), is the most reactive metabolite of 1,3-butadiene, an important hazardous air pollutant and potent genotoxic agent found in cigarette smoke. In this study we examined the effect of DEB on the proliferative capacity of human lung cells. We hypothesized that exposure of human lung …
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Copolymerization of Alpha-Alkylacrylonitriles and 1,3-Butadiene
Made available in DSpace on 2015-05-12T17:02:26Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0006016.PDF: 8570893 bytes, checksum: 46a3285722232dc72c847dca047afe88 (MD5) Previous issue date: 1953
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Copolymers of 1,3-Butadiene With 2-Thenalacetophenone and Related Ketones
Made available in DSpace on 2015-05-12T17:02:25Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0006001.PDF: 3833480 bytes, checksum: 00d334dd26c2bef3c3f3bf3056465c07 (MD5) Previous issue date: 1953
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Copolymers of 1,3-Butadiene With Acrylic Acid and With Allyl Alcohol
Made available in DSpace on 2014-12-05T19:35:59Z (GMT). No. of bitstreams: 1 0009121.pdf: 2712348 bytes, checksum: 984e010708650d20fd1a0e6add972ea2 (MD5) Previous issue date: 1954
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Alumina-supported palladium and palladium/copper catalysts: Characterization and use for selective hydrogenation of 1,3-butadiene
Butadiene is a normal deleterious contaminant that must be removed from C$\sb4$-olefin streams before being used in several industrial applications. While this impurity is substantially eliminated by selective catalytic hydrogenation, there is a considerable economic incentive to improve the …
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Next-generation sequencing as a tool for investigating the in vivo biological consequences of DNA lesions and its applications on the ethenoguanine, 8-oxoguanine and 1,3-butadiene-induced lesions
… vivo genotoxicity and mutagenicity of four 1,3-butadiene-induced adenine adducts were evaluated. Previous in vitro studies have shown that some of these lesions are highly mutagenic. Surprisingly, we found that none of them was significantly mutagenic in any of the conditions investigated. This …
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Thermal rearrangements of linear carbon chains: Theoretical and experimental studies
… for the first time. 1-Phenyl-4-p-tolyl-1,3-butadiene, 13C enriched at C-1, was synthesized and subjected to flash vacuum pyrolysis. Under high temperature and at low pressure, this resulted in nearly complete 13C label equilibration among all of the sp hybridized carbons, as seen by NMR …
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The attempted synthesis of 3-trifluoromethyl-2,5-dihydrothiophene 1,1-dioxide
… Diels-Alder reaction of 2- trifluoromethyl-1,3-butadiene (II) and sulfur dioxide. Evidence is given to support the structure of the product of the Diels-Alder reaction as that assigned to I.
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The Effects of Inorganic Solids and Certain Gases on the Thermal Decomposition of Catechol
… (2) 1540-ppm oxygen, and (3) 1320-ppm 1,3-butadiene in nitrogen, are utilized to generate a stream with constant catechol concentration. To investigate the role of the inorganic solids on the reactions, the inorganic solids are placed between quartz wool and installed near the reactor’s …
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An Experimental Investigation of the Role of Small Hydrocarbons and Combustion-Generated Nanoparticles on the Formation and Growth Reactions of Polycyclic Aromatic Hydrocarbons during the Pyrolysis of a Model-Fuel and Hydrocarbon Gases
… co-pyrolysis experiments are performed using 1,3-butadiene (C<sub>4</sub> hydrocarbon) and propyne as fuels at the above described experimental conditions. The results of the catechol/propyne as well as the 1,3-butadiene/propyne co-pyrolysis experiments reveal important synergistic effects that …
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Fuel component effects on hydrocarbon emissions from a spark-ignition engine
… of two olefins, 2-methylpropene (2MP) and 1,3-butadiene, to selected fuel components. In this experiment, a base fuel was perturbed with the following four major fuel components: MTBE, toluene, m,p-xylene, and iso-octane. For each of these components, new fuel mixtures were blended by …
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Synthesis and properties of some 2,5-dihydrothiophene 1,1-dioxides
… by the synthesis of 2-bromomethyl- 1,3-butadiene. 5. A novel Diels-Alder reaction between 3-bromomethyl and 2,5-dihydrothiophene 1, 1-dioxide has been described. 6. The structure of 3-bromomethyl-2, 5-dihydrothiophene 1, 1-dioxide was supported both by pyrolysis studies and by the above …
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Investigation of montmorillonite clay-mediated reactions of aldehydes
… of aromatic aldehydes with 2,3-dimethyl-1,3-butadiene to give dihydropyran products; (2) the cyclotrimerization of aliphatic aldehydes; (3) the oxidation of aliphatic aldehydes to the corresponding carboxylic acids; (4) the addition of allyltrimethylsilane to electron deficient benzaldehydes …
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Sequential cycloadditions for the synthesis of taxoid mimics and stereoselective synthesis of tamoxifen analogues via a new carbomagnesiation-palladium coupling reaction
… by cycloadditions with 2-triisopropylsilyl-1,3-butadiene and cyclopentadiene, respectively, gave the tetracyclic skeleton 56 in good yield. Further manipulations afforded compounds 69, 71, and 73, which were subsequently sent for biological testing with the hopes that they will display …
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Nonadiabatic Dynamics of Cis-Trans Photoisomerization --- a First Principles Study
… of two isomerizable molecules: 1,3-butadiene and stilbene.
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