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 13 of 13 for “"Polychlorinated biphenyl (PCB)"”.
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Polychlorinated biphenyl (PCB) contamination in Pittsfield, Massachusetts : an investigation of public participation
… polluter, General Electric, regarding extensive PCB (polychlorinated biphenyl) contamination in Pittsfield, Massachusetts. In this case, government acted as a trustee on behalf of the public's interests in the negotiations. All individuals involved in the negotiation signed contracts of …
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Are PCBS in phytoplankton and zooplankton at equilibrium with the water in which they live?
Food chain bioaccumulation of polychlorinated biphenyls (PCBs) can result in harmful concentrations within higher trophic level organisms such as fish and humans. It is important to consider how the concentrations of PCBs in phytoplankton and zooplankton affect higher trophic organisms. It was …
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Development of a dye sensitized photochemical reduction process for the degradation of polychlorinated biphenyls
A method has been developed that can photoreduce polychlorinated biphenyl (PCB) to biphenyl with great speed and efficiency as well as at relatively low cost. This process uses visible light, generated by ordinary incandescent light bulbs, which is absorbed by a common dye sensitizer. The dye …
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RECOVERY-RD: The Development of a Biotransformation Model for Sediment Systems Contaminated with PCBs
… the biotransformation processes associated with Polychlorinated Biphenyl (PCB) compounds in contaminated sediments for a variety of aquatic environments, including rivers and marine systems. RECOVERY-RD is intended as a screening tool for evaluating the impact of engineered sediment caps on …
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Polyethylene devices and the effects of sediment resuspension on the cycling of PAHs and PCBs in the lower Hudson Estuary
… 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 input of these chemicals as a result of sediment resuspension could be compared to modeling expectations and the contribution …
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An integrative analysis of the multi- and transgenerational effects of endocrine-disrupting chemicals on behavior and neurobiology
… (F3 generation). Two EDCs, a weakly estrogenic polychlorinated biphenyl (PCB) mixture and an anti-androgenic fungicide vinclozolin (VIN), were used in this dissertation to understand the impact of chemicals with differential mechnisms of action. We hypothesized that these EDCs would alter the …
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Hepatic CYP1A enzymes in fish as a biomarker of water pollution
Poly aromatic hydrocarbon (PAR) and polychlorinated biphenyl (PCB) compounds are widespread contaminants in the aquatic environment. Induction of hepatic cytochrome P450 1A (CYP1A) enzymes in fish have been used as a biomarker to detect exposure to PAH and to a certain extent PCB-like compounds. In …
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Comparison of polychlorinated biphenyl profiles in rat, fish and human tissues; the effects of consuming Great Lakes fish
The food chain transfer of Polychlorinated Biphenyl (PCB) congeners was assessed in rat and human tissue after the consumption of contaminated Great Lakes fish. Fish from Lake Superior (LS), Lake Michigan (LM), and Lake Huron (LH) were examined for either total PCB or specific congener …
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Assessing the effects of adolescent PCB exposure on executive functions in humans and animals
… suggests that early developmental exposure to polychlorinated biphenyls (PCBs), a class of persistent organic pollutants, leads to deficits in cognitive functions such as cognitive flexibility and inhibitory control. These cognitive processes are mediated to a large extent by the prefrontal …
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The application of active and passive bioaccumulation methods to measure metallic and organic pollutants along the Namibian coastline
… of organochlorine pesticides (OCPs) and polychlorinated biphenyl (PCB) were analysed in both SPMD and mussels following QuECHERS extraction methods and using a GC-20230 Plus coupled with a GCMS-TQ8050 NX triple quadruple mass spectrometer. The element levels in all AMs were significantly …
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Biology & ecology of a killer whale (Orcinus orca) community that interacts with pelagic trawlers in the Northeast Atlantic
… site fidelity, population structure, diet and PCB contaminant levels of this killer whale community. The research involved the utilisation of Irish pelagic trawl vessels as platforms of opportunity for obtaining killer whale behavioural and photo-identification data, skin biopsies, fish and …
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Interactive effects of developmental PCB exposure and relevant environmental risks on the auditory system
Polychlorinated biphenyls (PCBs) are environmental contaminants that can cross the mammalian placenta and mobilize from fat stores into breast milk to affect the developing offspring. Developmental PCB exposure has been shown to cause auditory deficits that last through adulthood. We assessed the …
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Interactions of disruptive materials with phospholipid bilayers
… is made between the interactions of two polychlorinated biphenyl isomers and an SLB. A study of AFM micrographs identifies multiple phase transitions in one isomer, but only one phase transition for the other isomer. Two transitions are consistent with an uninterrupted bilayer, but one …