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A spectroscopic study of the interaction of halogen-, nitrogen-, and carbon containing molecules with water-iceHolmes, N. January 1998 (has links)
No description available.
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The use of poloxamer surfactants in soils washing for the remediation of former gasworks sitesBoyle, Richard Anthony January 2003 (has links)
No description available.
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Infrared spectroscopy of adsorbates on single crystal surfacesParlett, Peter Michael January 1996 (has links)
No description available.
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Fatty alcohol oxidases and fatty aldehyde dehdrogenases in the hydrocarbon utilising yeasts Candida tropicalis and Yarrowia lipolyticaKemp, Glenwyn David January 1989 (has links)
No description available.
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Toluene/xylene catabolic pathway of Pseudomonas putida strain Oâ†2Câ†2Aemprapa, Sirinun January 1996 (has links)
No description available.
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Catabolism of naphthalene by Pseudomonas sp. strain U2Carvallo, Sergio Luis Fuenmayor January 1998 (has links)
No description available.
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Plant enhanced biodegradation of petroleum hydrocarbons in soilAgbeotu, Emibra E. January 2009 (has links)
Hydrocarbons in soil may assert acute or chronic impacts to plants, animals and microbial processes if contacted. These have raised political and scientific concerns. Consequential research efforts corroborated that constitutive microorganisms contact the compounds for their metabolic activities. This may result in mineralisation, transformation and/or detoxification (biodegradation) of the compounds. Hydrocarbon biodegradation is relatively cost-effective and ecological, but often marred with limited availability to plant or animal cells (bioavailability) for metabolism. Several authors reported that growth of some plants or administration of requisite rootexudates into soil with hydrocarbons often increases hydrocarbon bioavailability for enhanced biodegradation. However, development of knowledge about this respite from plants is often founded on impacts of plants on single dose or selected mixture of hydrocarbons in soils or culture solutions. These do not; and cannot represent the heterogeneous complex mixture of numerous organic and inorganic compounds in soils where plants grow naturally. In this study, synthetic root-exudates, seedlings of lupin and ryegrass were applied separately into respective soils that were contaminated with aged and/or fresh petroleum hydrocarbons. Individual impacts of the treatments on bulk hydrocarbon concentrations, rate of microbial respiration and total numbers of culturable bacterial colonies in the soils were investigated. Results suggested that application of lupin, ryegrass or synthetic root-exudates into the soils significantly (p ≤ 0.05) induced reduction or upsurge of hydrocarbon biodegradation end-points relative to the type and concentration of hydrocarbons in soil. Thus, it is inferred that growth of plants or administration of root-exudates into hydrocarbon contaminated soils could result in enhanced biodegradation of hydrocarbons in soil.
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Toward the synthesis of a carbon nanotube end-cap: Application of a new benzannulation method to the first synthesis of pentabenzo[a,d,g,j,m]corannuleneSmith, Natalie Joy January 2011 (has links)
Thesis advisor: Lawrence T. Scott / The synthesis of carbon nanotubes is of great interest to a wide variety of chemists. Our approach uses traditional organic synthesis to build rationally designed fullerene fragments, which can be grown into carbon nanotubes. Two target bowls were selected for this research; one consisting of 50 carbon atoms, and the second containing 40. Both bowls, when grown through a repetitive sequence of Diels-Alder addition and rearomatization, would result in the formation of [5,5] carbon nanotubes. The first route attempted was the synthesis of a C50H10 end-cap using diphenanthrylcorannulene as an advanced intermediate. However, after a great deal of trial and error to make the substituted diphenanthrylketone needed, the route was abandoned when the aldol condensation of this ketone with acephenanthrylquinone could not be made efficient enough to continue with the synthesis. The second synthetic target, the C40H10 end-cap, was pursued through the synthesis of corannulene, which was then substituted with bromine. The bromine atoms were converted to vinyl groups, and a Diels-Alder cycloaddition followed by rearomatization forms the new benzo substituent. This was successful for the smallest members of the benzocorannulene family; however, the yields were too low for a practical route to pentabenzo[a,d,g,j,m]corannulene from corannulene, which was the planned precursor for the ultimate formation of the target bowl. An adapted method was employed for the synthesis of larger benzologs. Tribenzo[a,d,j]corannulene was prepared through a modified version of the literature method for the synthesis of dibenzo[a,g]corannulene. With this material characterized and available in gram quantities, the synthesis of pentabenzo[a,d,g,j,m]corannulene was pursued through the dibromination of tribenzo[a,d,j]corannulene, followed by vinylation and subsequent Diels-Alder reaction to accomplish a two-fold benzannulation. This molecule was synthesized and characterized here for the first time. Tetrabenzo[a,d,g,j]corannulene was also observed in some of the reactions, but was never isolated or characterized. / Thesis (PhD) — Boston College, 2011. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Chemistry.
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Attempted synthesis of novel aromatic hydrocarbons.January 1976 (has links)
Thesis (M.Phil.)--Chinese University of Hong Kong. / Bibliography: leaves 94-96.
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Numerical investigation of polycyclic aromatic hydrocarbon clustersChen, Dongping January 2014 (has links)
No description available.
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