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 106 for “"environmental pollutants"”.
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Neurotoxicity of environmental pollutants
… retardants (BFRs) and alkylphenols (APs) are pollutants commonly found within the environment and have human health concerns due to their endocrine disrupting and cytotoxic effects. BFRs are used to reduce the flammability of a variety of consumer products such as foam furnishings, whereas APs …
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Comparative extraction techniques for environmental pollutants
… new sample preparation techniques, the U.S. Environmental Protection Agency (EPA) has recently implemented research programs to reduce or abolish laboratory pollution. In the work reported here, EPA Method 8270, established for Priority Pollutant Organics, will be evaluated by both Soxhlet …
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Chemical and Physical Characterization of Environmental Pollutants
Made available in DSpace on 2014-12-13T20:10:46Z (GMT). No. of bitstreams: 1 8004290.pdf: 3647834 bytes, checksum: 2ff9cb9b58cc1a75e99dee40173a5810 (MD5) Previous issue date: 1979
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Interactions of Environmental Pollutants with Human Gut Bacteria
The environmental contamination by manufactured chemicals has by some estimates exceeded the safe planetary boundary. Due to the widespread contamination of water and agricultural systems, a vast number of chemical pollutants make it into the food and hence into the human body. While pharmaceutical …
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Developmental Malformations in Zebrafish Caused by Exposure to Environmental Pollutants
… zebrafish as a model to identify and predict environmental chemicals causing congenital malformations. High-throughput screening of 292 unique chemicals from the ToxCast Phase I library identified 38 skeletal disruptor compounds (SDCs) producing bone and craniofacial cartilage malformations in …
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Supercritical fluid extraction applied to environmental pollutants from Chesapeake Bay sediment
… polynuclear aromatic hydrocarbons (P AHs) in environmental samples. As an alternative sample preparation technique, SFE offers the distinct advantages of greatly reduced sample preparation time, concentrated analyte ready for assay, and comparable extraction efficiency to conventional liquid …
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Effects of Exposure to Environmental Pollutants on Markers of Adiposity and Inflammation
… concern over the role of persistent organic pollutants (POPs) in the global obesity epidemic, particularly given their potential to disrupt lipid metabolism and promote inflammation. This dissertation included 2,264 adults aged 45–74 years from the Hispanic Community Health Study/Study of …
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Strategies for the analytical determination of thermally labile sulfur-containing environmental pollutants
… allow the sensitive, selective determination of pollutants to be routinely possible. Polar, thermally labile sulfur-containing pesticides and pollutants were our focus analytes. This objective was achieved in two ways: 1) the development of supercritical fluid extraction procedures suitable for …
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INTERACTIONS OF ENVIRONMENTAL POLLUTANTS WITH MICROALGAE AND LICHEN: INSIGHTS FROM MULTI-PLATFORM METABOLOMICS
In this thesis, the interactions of environmental pollutants with microalgae and lichens were investigated using multi-platform metabolomics. In chapter 2, differentiated metabolites in microalgae Chlorella vulgaris and Scenedesmus obliquus after exposure to triphenyl phosphate revealed …
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Airway Inflammatory States in Response to Environmental Pollutants and the Influence of Oxidative Balance
… were utilized in vitro to test the ability of pollutants generate reactive oxygen species and initiate allergic inflammation in mast cells. Sulfur dioxide was then employed to translate the in vitro findings into a whole animal model. Oxidative pathways were examined in vivo through the use of …
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Identification and characterisation of bacterial genes associated with resistance to and/or degradation of environmental pollutants
Bacteria were previously isolated from two separate sites, one contaminated with lead and the other with Polycyclic Aromatic Hydrocarbons (PAHs). Alcaligenes sp. AO22 and Arthrobacter sp. E9 were identified from the lead contaminated site, while Stenotrophomonas maltophilia was identified from the …
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Enhancement in Degradation of Environmental Pollutants: Fenton Degradation of 2,4,6-Trinitrotoluene and Photodegradation of Deepwater Horizon Crude Oil
<p>Pollution poses serious threats to both the environmental and the organisms that depend on their environment for survival. Due to the toxicity of most contaminants, there is a dire need for remediation of polluted sites. Remediation studies were conducted on two high priority pollutants: …
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Use of the Immune System to Investigate the Toxicity Induced by Environmental Pollutants in Fish, Amphibian, and Mammalian Species
… has been growing concern about the effect of environmental pollutants on the immune system. In the current study, we investigated the toxicity induced by certain environmental pollutants on the immune systems of fish, amphibians, and mice. Fish in the laboratory were tested for susceptibility …
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Metabolism and mechanistic toxicity of environmental pollutants in fish models : integrating in vitro and in vivo systems for ecotoxicological studies.
… further aggravated by the influence of abiotic environmental factors, such as climate change, which could potentially modify organisms' exposure and responses to pollution. Historically, ecotoxicological studies have relied on the use of live animals and endpoints such as mortality, growth, and …
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Detection of Biological Effects of Environmental Pollutants of the Kafue River on the Kafue Lechwe (KOBUS LECHE KAFUENESIS)by Characterization of Selected Biomarkers
… suitable biomarkers for use in assessing environmental pollution. Thus this study was aimed at assessing the potential of Cytochrome P450 1A1 (CYP 1A1), Cytochrome P450 3A (CYP 3A) and Metallothionein1 (MT 1) as biomarkers in the Kafue lechwe in response to pollutants in the Kafue river. …
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Comparison of transport effects of perfluorinated and hydrocarbon surfactants on environmental co-contaminants
… OF PERFLUORINATED AND HYDROCARBON SURFACTANTS ON ENVIRONMENTAL CO–CONTAMINANTSByRashad Najee Simmons The use of groundwater as drinking water justifies efforts for the prevention and remediation of groundwater contamination by environmental pollutants. The inclusion of hydrocarbon …
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A detailed investigation into potential genes and their variants regulatory sequences causing endometriosis and how the environment may impact upon these
… genetic loci that could be susceptible to environmental pollutants. Results 57 genes were identified to have a role in increasing the risk of endometriosis development. The incidence of potentially pathogenic variants of these 57 genes was explored through data analysis from the Genomics …
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Environmental factors affecting the risk of breast cancer
… increased industrialisation, they suggest that environmental pollutants may contribute to breast cancer risk. This thesis further explores this theory.
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CONSEQUENCES OF ARYL HYDROCARBON RECEPTOR ACTIVATION IN STEADY-STATE AND INFLAMMATORY DENDRITIC CELLS
… factor that mediates the toxicity of various environmental pollutants, including 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and TCDD-like compounds. Exposure to environmentally relevant levels of TCDD and TCDD congeners has been shown to cause immune suppression, yet the mechanisms underlying …
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CONSEQUENCES OF ARYL HYDROCARBON RECEPTOR ACTIVATION IN STEADY-STATE AND INFLAMMATORY DENDRITIC CELLS
… factor that mediates the toxicity of various environmental pollutants, including 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and TCDD-like compounds. Exposure to environmentally relevant levels of TCDD and TCDD congeners has been shown to cause immune suppression, yet the mechanisms underlying …
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