Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 299 for “"PAH"”.
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Atmospheric partitioning of polycyclic aromatic hydrocarbons (PAH) and oxygenated PAH
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1997.
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Simplified real-time PAH measurement techniques
… concern for polycyclic aromatic hydrocarbon (PAH) emissions from these stoves. Design of stoves that reduce PAH emissions has been hampered because existing PAH measurement techniques are slow, complex, and expensive. This study investigates two simple, inexpensive, real-time PAH measurement …
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Acenaphthylene Based CP-PAH Materials for Organic Semiconductors
Organic-based electronic devices have received considerable attention because of their presumable advantages over traditional inorganic-based electronics, such as low cost, flexibility, and applicability for large area production. Because of the possible commercialization of electronic products …
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PAH radical scavenging in fuel-rich premized benzene flames
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1999.
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PAH and PCB distribution in sediment fractions and sorptive phases
… study focused on the relative distribution of PAHs and PCBs in size and density fractions of three sediments, which were physically separated for direct measurement of contaminants in the fractions and correlation to sorptive phase distribution. Oil and grease, soot, (non-black carbon) organic …
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PAH chemistry in a jet-stirred/plug-flow reactor system
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1993.
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Polycyclic Aromatic Hydrocarbon (PAH)-Based Conjugated Macrocycles and Polymers For Electronic Applications
… phases, polycyclic aromatic hydrocarbons (PAHs) are attractive building blocks for the assembly of conjugated systems for electronic applications. The body of this dissertation focuses on the synthesis, structure-property and device studies of PAH-based conjugated systems, including …
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Substrate Specificity and Molecular Characterization of PAH-Degrading Anaerobic Enrichment Cultures Under Methanogenic Conditions
… polycyclic aromatic hydrocarbons (PAHs), naphthalene or phenanthrene, as a sole carbon source. Characterization of the enrichment cultures by 16S rDNA analysis revealed two unique populations, though they were initiated from the same sediment source. This study set out to determine …
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On-line liquid distribution chromatographic/spectrofluorometric determination of PAH distribution in coal-derived products
… of polycyclic aromatic hydrocarbons (PAHs) in coal-derived products. The PAHs were isolated by preparative silica gel columns with a hexane mobile phase, and fractionated into five samples based on the number of condensed rings. Each fraction was separated by reverse phase HPLC with an …
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PHYSIOLOGY AND ESTUARINE ECOLOGY OF PHENANTHRENE-DEGRADING BACTERIA (MYCOBACTERIUM, MICROLAYER, METABOLITES, PAH, MARINAS, NEW HAMPSHIRE)
… of the polycyclic aromatic hydrocarbon (PAH), phenanthrene, by estuarine enrichment and pure microbial cultures was examined.</p><p>A Mycobacterium species, strain BG1, able to use phenanthrene as sole carbon and energy source, was isolated from estuarine sediment. Phenanthrene …
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PAH and soot formation and interconversion in turbulent coal liquid and natural gas diffusion flames
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1984.
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Application of Equilibrium-based PAH Adsorption to Modelling Graphene Synthesis in a Microwave-Assisted Plasma Reactor
… unconstrained polycyclic aromatic hydrocarbon (PAH) adsorption. This study aims to integrate an equilibrium-based PAH adsorption model used in carbon nanoparticles modelling into the current graphene synthesis model to solve the unconstrained PAH adsorption issue. The equilibrium-based model …
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Retrospective single-center study on PAH- and CTEPH-patients’ diagnosis and follow-up between years 2008-2022
… erityisesti pulmonaaliarteriahypertensiossa (PAH) ja kroonisessa tromboembolisessa pulmonaalihypertensiossa (KTEPH), on ratkaisevasti parantanut potilaiden ennustetta. Tutkimustietoa suomalaisista keuhkoverenpainetautipotilaista on toistaiseksi vähän. Tutkimme vuosien 2008 - 2022 välillä …
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Later Life Consequences of Subteratogenic Exposure to a Complex PAH Mixture in the Atlantic Killifish (Fundulus heteroclitus)
… such as polycyclic aromatic hydrocarbons (PAHs) a large group of more than 100 individual compounds, which are important environmental (including aquatic) contaminants. Aquatic sediments constitute a major sink for hydrophobic pollutants, and studies show PAHs can persist in sediments over …
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An analysis of field data for evidence of anaerobic degradation of PAH and BTEX plumes at manufactured gas plant sites
Field data (including geology, hydrogeology, soil chemistry, groundwater chemistry, and aquifer characteristics) were analyzed at eight MGP sites located in the New Jersey Coastal Plain. These data were used to calculate biodegradation rate constants, which were then compared with laboratory …
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Model of PAH and PCB bioaccumulation in Mya arenaria and application for site assessment in conjunction with sediment quality screening criteria
… In this document a bioaccumulation model for PAHs and PCBs was developed. The model considers contaminant partitioning into organism lipid and protein and incorporates organism exposure to contaminants through sediment and ingestion of contaminated food particles. Results show the model …
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A Stone's Throw from the Source: An Examination of Fine-Grained Volcanic Toolstone Use in the Pah Rah Range, Western Nevada
Prehistoric use of the Pah Rah Range in western Nevada has resulted in a diverse record of hunting, processing, and residential sites, many of which contain artifacts manufactured from fine-grained volcanic (FGV) toolstones. Using data from the X-ray fluorescence analysis of 303 FGV artifacts from …
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Model of PAH and PCB bioaccumulation in Mya arenaria and application for site assessment in conjunction with sediment quality screening criteria
Thesis (M. Eng. in Ocean Engineering)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and the Woods Hole Oceanographic Institution), 1999.
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