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 20 for “"EE2"”.
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Entwicklung, Optimierung und Validierung eines Immunoassays zur sensitiven Detektion des endokrinen Disruptors 17alpha-Ethinylestradiol
… mit der Analytik von 17alpha-Ethinylestradiol (EE2) in der aquatischen Umwelt. Der Schwerpunkt der Untersuchungen lag dabei in der Entwicklung und Optimierung von Enyzm-Immunoassays (ELISAs) zur direkten Bestimmung des Analyten im Konzentrationsbereich von 1 - 10 Nanogramm pro Liter. Es wurden …
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Elucidating Factors that Impact the Removal of Organic Microconstituents by Ammonia Oxidizing and Heterotrophic Bacteria
… carbamazepine (CBZ), 17alpha-ethinylestradiol (EE2), iopromide (IOP), and trimethoprim (TMP), during biological suspended culture treatment. Specifically, the role that various ecological members of biological treatment systems play in biotransforming these compounds was evaluated. Sorption …
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Effects of exposure to 17α-ethynylestradiol during larval development on the African clawed frog (Xenopus laevis) and the wood frog (Rana sylvatica)
… the effects of exposure to 17α-ethynylestradiol (EE2), the estrogen analog commonly utilized in oral contraceptives, during the larval period on the sexual development, growth, metamorphosis, and transcriptional profiles of the African clawed frog (Xenopus laevis) and the wood frog (Rana …
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The Implications of Wicked Problems for the Legitimacy of European Environmental Policy Development. The case of Environmental Risks from the Pharmaceutical Endocrine Disrupter, 17α-Ethinyl Oestradiol under the European Water Framework Directive
… endocrine disrupter 17 alpha-ethinyl oestradiol (EE2), which is an active ingredient in the contraceptive pill, confronts government responsibilities for citizens' health with potential environmental risks from its presence in aquatic ecosystems. Further to a risk appraisal process conducted under …
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Ökotoxikologische Untersuchungen zur Wirksamkeit endokrin aktiver Substanzen auf Fische
… mit Nonylphenol (NP)bzw. 17a-Ethinylestradiol (EE2) mit ei-nem alters- und dosisabhängigen Anstieg des PVG. Eine Exposition juveniler Karpfen und adulte männliche Regenbogenforellen ergab für NP- und EE2-haltige Klärabwässer einen deutlich schwächeren Anstieg des PVG als nach Belastung mit NP …
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Evaluación de la aplicación de estiércol animal en relación a la presencia, disponibilidad y biodisponibilidad de estrona (E1), 17β-estradiol (E2) y 17α-etinilestradiol (EE2) en suelos degradados
… el 17β-estradiol (E2) y el 17α-etinilestradiol (EE2), que están consideradas disruptores endocrinos, y aunque se encuentren en muy bajas concentraciones, pueden provocar serios daños en animales y en seres humanos. Por esto, el objetivo de este trabajo fue evaluar la biodisponibilidad de dos …
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The Influence of Estrogen Signaling on Male Reproduction in Medaka (Oryzias latipes)
… estrogen receptor agonist, ethinylestradiol (EE2), and those of a G-protein estrogen receptor (GPER) specific agonist, G-1. This was assessed through breeding experiments, histological assessment of testicular morphology and microarray assessment of testicular gene expression changes following …
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Kombinierte Freiland- und Laboruntersuchungen zur Wirkung endokriner Schadstoffe auf Fische
… Referenzchemikalien (Ethinylestradiol, EE2; Methyltestosteron, MT) etabliert wurde. Abschließend wurde das Fischtestsystem hinsichtlich seiner Empfindlichkeit bei Freilandversuchen untersucht. Nach der Optimierung der In vitro-Biotests im Bereich der Umweltüberwachung, konnte im Freiland …
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Efficiency of soil aquifer treatment in the removal of wastewater contaminants and endocrine disruptors. A study on the removal of triclocarban and estrogens and the effect of chemical oxygen demand and hydraulic loading rates on the reduction of organics and nutrients in the unsaturated and saturated zones of the aquifer.
… 17¿-estradiol (E2) and 17¿- ethinylestradiol (EE2). SAT was simulated in the laboratory using a series of soil columns under saturated and unsaturated conditions. Investigation of the removal of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Dissolved Organic Carbon (DOC), …
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Fate and Transport of Endocrine Disrupting Compounds during Wastewater Treatment: The Role of Colloidal and Particulate Material
… 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) by fluorescence quenching. The MLSS-derived colloidal organic carbon (COC) sorption coefficient (Kcoc) for pyrene ranged from (< 1 to 80) L/kgcoc, indicating a similar affinity for pyrene compared to natural organic matter. Kcoc coefficients …
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The impact of restricted ration and chemical stressors on Rainbow trout (Oncorhynchus mykiss) and American flagfish (Jordanella floridae)
… ibuprofen, naproxen, and 17 α- ethinylestradiol (EE2) alone and in mixture on both reproduction and subsequent sensitivity to offspring. Both a short-term reproduction test, and multi-generational study were used to assess a variety of endpoints. The partial life-cycle study noted a significant …
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Passive in-situ estrogenic potency sampling with DGT-YES
… for the sampling of BPA, BPAF, E2 and EE2. Several physical-chemical and chemical analyses were conducted to attest the suitability of the agarose (1.5%) and agarose (1.5%) – activated charcoal (1%) chosen respectively as diffusive gel and binding gel. They were found to be suitable for …
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Oxidative Treatment of Emerging Micropollutants and Viral Pathogens by Potassium Permanganate and Ferrate: Kinetics and Mechanisms
… trimethoprim, TMP; and 17-ethinylestradiol, EE2), Fe(VI) oxidation of one representative PhAC (CBZ), and Fe(VI) inactivation of MS2 phage (Fe(VI) reactions with other PhACs were not conducted because recent literature reports addressed the topic). The Mn(VII) and Fe(VI) reactions examined …
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Development and Scale-up Production of a Novel Fibrous Catalyst and Application for Removal of Endocrine Disrupting Compounds
… in the removal of 17β-ethinylestradiol (EE2) using the same mesh to liquor ratio and [H2O2] as for E2, however the optimal pH for EE2 was pH 3. Under these conditions the removal was over 90% in 50 minutes. The removal of estrogenic compounds, pharmaceuticals, pesticides, total organic …
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Organ and primary culture of medaka (Oryzias latipes) testis: Test systems for the analysis of cell proliferation and differentiation
… to analyze the effects of a synthetic estrogen, EE2, on cell proliferation in medaka testis. Both organ and primary culture were suitable for this purpose consistently small concentrations (0.01 and 1 nM) of EE2 stimulated cell proliferation slightly, while higher concentrations (100 nM) had an …
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Assessing Brook Stickleback (Culaea inconstans) as a bioindicator for endocrine disrupting compounds in aquatic environments
… to two model compounds, 17α-ethinylestradiol (EE2) and 17α-methyltestosterone (MT), at 1, 10 and 100 ng/L for 21 days (sampled at 7 and 21 days) via static-renewal to determine the responsiveness of these transcripts to exogenous hormones. The effect of hormone exposure on condition factor, …
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Desarrollo de estrategias analíticas de microextracción de compuestos estrogénicos desde matrices líquidas para ser evaluados por cromatografía líquida con analizador de tiempo de vuelo y detector de masas (LC-TOF/MS)
… el estrógeno sintético 17α-etinilestradiol (EE2) como el principal compuesto activo de diferentes métodos anticonceptivos, también se ha reportado su uso para promover el crecimiento en animales. Los estrógenos son metabolizados en el hígado a través de 2 fases, donde es posible la formación …
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Determination of Biodegradation Kinetics of Select Pharmaceuticals and Personal Care Products in an Activated Sludge System through Respirometry
… 17β estradiol (E2), and 17α ethinyl-estradiol (EE2). The activated sludge biomass used for respirometry testing was obtained from a local wastewater treatment plant (WWTP). The plant treats municipal wastewater, and the activated sludge biomass was not acclimated to relatively high doses of PPCP …
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Analytics of endocrine disrupting chemicals in environmental matrices
… routine analyse van 4 oestrogenen (E1, E2, E3 en EE2) in milieuwaterstalen in het lage ng.l-1 gebied toelaat. Deze methode omvat extractie met behulp van speedisk extractie en detectie met gaschromatografie gekoppeld aan massaspectrometrie in electron impact mode (GC-EI-MS-MS). Daarnaast worden de …
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Remoção de desreguladores endócrinos em água de abastecimento
… (E2), estriol (E3) e 17α-etinilestradiol (EE2) por diferentes tecnologias de tratamento. Além disso, o presente trabalho teve como objetivo avaliar experimentalmente a eficiência de remoção da atividade estrogênica dos hormônios E1 e E2 via cloração em condições de doses de cloro e tempo de …