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Showing 1 to 20 of 25 for “"polycyclic aromatic hydrocarbon (PAH)"”.

  1. Polycyclic Aromatic Hydrocarbon (PAH)-Based Conjugated Macrocycles and Polymers For Electronic Applications

    Dutta, TanmoyUniversity of Missouri--Kansas City,2014

    … high tendency to form π-stacked ordered 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 …

    umkc Repository record

  2. ULTRAFAST DYNAMICS IN NITRO- AND (ORGANOPHOSPHINE)GOLD(I)-POLYCYCLIC AROMATIC HYDROCARBONS

    Vogt, Robert AaronCase Western Reserve University School of Graduate Studies2013

    The light-induced relaxation pathways of various polycyclic aromatic hydrocarbon (PAH) derivatives were studied using broadband transient absorption with femtosecond (10<sup>-15</sup> s) time resolution, steady-state Xe-lamp irradiation, UV/Vis spectroscopy and HPLC methods. Ground- and …

    ohiolink Repository record

  3. QUINODIMETHANES - AN EFFECTIVE STABILIZATION STRATEGY FOR POLYCYCLIC AROMATIC HYDROCARBONS

    KUEH WEIXIANG2021

    The union of a quinodimethane (QDM) core with a polycyclic aromatic hydrocarbon (PAH) framework led to the birth of a new class of quinoidal polycyclic/heterocyclic hydrocarbons (PHs) with numerous potential applications in materials chemistry. Over the years, intensive research efforts involving …

    nus Repository record

  4. Application of Equilibrium-based PAH Adsorption to Modelling Graphene Synthesis in a Microwave-Assisted Plasma Reactor

    Fan, JiahaiUniversity of Windsor2023

    … model required improvement due to 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 …

    windsor Repository record

  5. A study of cosmic dust in the galactic environment

    Mishra, Ajay (Astrophysicist)University of Missouri--Columbia2016

    … 11.3 micron which are generally attributed to polycyclic aromatic hydrocarbon (PAH) molecules. We explore the interrelations among the mysterious 21 micron, 30 micron, and UIR features of the 21 micron sources. We find that none of these spectral features correlate with each other. This argues …

    missouri Repository record

  6. Benzo[a]pyrene effects on Fundulus heteroclitus reproductive endpoints

    Booc, Frank2020

    Benzo[a]pyrene (BaP) is a polycyclic aromatic hydrocarbon (PAH) that modulates aromatase enzyme function and, thus, potentially interrupts normal reproductive function. The aim of this study was to use a fish model, Fundulus heteroclitus, to assess whether BaP exposure adversely impacted …

    mississippi Repository record

  7. Polyethylene devices and the effects of sediment resuspension on the cycling of PAHs and PCBs in the lower Hudson Estuary

    Adams, Rachel G. (Rachel Gwen), 1972-Massachusetts Institute of Technology2003

    … developed; 2) the desorption rate of pyrene, a polycyclic aromatic hydrocarbon (PAH), from native Hudson River sediments was measured, and 3) pyrene and 2,2',5,5'-tetrachlorobiphenyl (PCB #52), a polychlorinated biphenyl (PCB), concentrations were measured in the lower Hudson Estuary so that the …

    mit Repository record

  8. Simplified real-time PAH measurement techniques

    Pierce, Timothy L.Virginia Polytechnic Institute and State University1982

    … recent years h.as caused a growing 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, …

    vt Repository record

  9. The design and synthesis of linear and macrocyclic Poly(para-arylene)s

    Batson, Joel MarcusMassachusetts Institute of Technology2013

    … Perylene has been identified as the smallest polycyclic aromatic hydrocarbon (PAH) capable of undergoing a Diels-Alder in its bay-region. Accordingly, in Chapter 4 we discuss progress towards the synthesis of a nanohoop containing this crucial perylene moiety, from which it is hoped the …

    mit Repository record

  10. Reversible and irreversible adsorption of naphthalene and α-naphthol to soil

    Burgos, William DavidVirginia Tech1995

    … the processes involved in the sorption of a polycyclic aromatic hydrocarbon (PAH) and its metabolite, respectively, and to assess the bioavailability of these two compounds adsorbed to two sandy soils with different organic carbon contents. Adsorption conditions were varied to estimate the …

    vt Repository record

  11. PHYSIOLOGY AND ESTUARINE ECOLOGY OF PHENANTHRENE-DEGRADING BACTERIA (MYCOBACTERIUM, MICROLAYER, METABOLITES, PAH, MARINAS, NEW HAMPSHIRE)

    GUERIN, WILLIAM FRANCIS

    … degradation and intermediary metabolism 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 …

    unh-thes Repository record

  12. Evaluating rhizodegradation of petroleum hydrocarbons and polycyclic aromatic hydrocarbons in wetland sediments containing spartina patens

    Lippencott, Robert J.

    Biodegradation of petroleum hydrocarbons (PHC) and 16 polycyclic aromatic hydrocarbon (PAH) compounds was evaluated in sediments from a stormwater basin that was a former salt marsh at an active oil refinery. Spartina patens were grown in basin sediments during a field study and a greenhouse study …

    njit Repository record

  13. Modeling The Impact Of Sediment Resuspension And Flocculation On The Fate Of Polychlorinated Biphenyls

    Chang, Chihwei Andrew2008

    … pollutants in urban estuaries. HOCs include polycyclic aromatic hydrocarbon (PAH), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs). Sorption to resuspended particles and sediments plays an important role controlling the water column residence times and spatial …

    maryland Repository record

  14. Experiment and Modeling Combined Kinetic Study of Bottom-up Polycyclic Aromatic Hydrocarbon Formations

    Yang, JeehyunMassachusetts Institute of Technology2022

    … their importance, the chemical mechanisms of polycyclic aromatic hydrocarbon (PAH) formation are not well understood. Therefore, a combined theoretical and experimental study of the chemical kinetics PAH formation is essential to deepen our understanding to draw a complete picture of aromatic …

    mit Repository record

  15. Multi-scale chemistry modeling of the thermochemical conversion of biomass in a fluidized bed gasifier

    Stark, Addison KilleanMassachusetts Institute of Technology2015

    … is shown between particle diameter and polycyclic aromatic hydrocarbon (PAH) production in a pyrolysis reactor. Next, a reactor network model (RNM) is developed for FBBGs utilizing a detailed chemical kinetic modelling frame-work. The influence of reactor conditions (temperature, …

    mit Repository record

  16. Ultra-fine soot investigation in flames

    Lasher, Stephen William, 1973-Massachusetts Institute of Technology1999

    … fuel rich flames. Soot sampling techniques for polycyclic aromatic hydrocarbon (PAH) analysis were also developed and used to obtain P AH information on soot generated from methane/oxygen premixed flames. The SMPS analysis was performed for SMPS inlet flowrates of 1 lpm and 2 lpm while keeping a …

    mit Repository record

  17. Carbon in urban, brownfield and heavy metal contaminated soils

    Beesley, LLiverpool John Moores University2010

    … added benefit of reducing total and bioavailable polycyclic aromatic hydrocarbon (PAH) concentrations. It is concluded that carbon storage in urban soils can potentially be increased by applying organic amendments, although longer-term carbon storage may only be substantially enhanced with …

    liverpool-jm Repository record

  18. Molecules to engines : combustion chemistry of alcohols and their application to advanced engines

    Merchant, Shamel SarfarazMassachusetts Institute of Technology2015

    … scientific understanding: peroxy chemistry and polycyclic aromatic hydrocarbon (PAH) formation. The first section of this thesis describes significant contributions to both these areas. Peroxy chemistry is important for accurately predicting ignition in future engine designs based on the concept …

    mit Repository record

  19. The Evolution of Massive Young Stellar Objects in the Large Magellanic Cloud

    Seale, Jonathan P.University of Illinois at Urbana-Champaign2011

    … and fine-structure line emission (SE), polycyclic aromatic hydrocarbon (PAH) emission (P Group), PAH and fine-structure line emission (PE), and only fine-structure line emission (E). Based upon the relative numbers of sources in each category, we are able to estimate the amount of time …

    uiuc Repository record

  20. South Chattanooga and Chattanooga Creek floodplain: A case study

    Belka, Maya M.2005

    … results of the floodplain sampling showed soil polycyclic aromatic hydrocarbon (PAH) levels above several EPA Region IV remediation guidelines. Although guidelines are not legally enforceable, the remediation guidelines are the only guidance provided for this type of site assessment. As a …

    utc Repository record

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