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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

Cyanobacterial Blooms in Chautauqua Lake, NY: Nutrient Sources and Toxin Analyses

DeMarco, Jonathan R. 16 September 2021 (has links)
No description available.
102

Ammonium cycling and nitrifier community composition in eutrophic waters affected by cyanobacterial harmful algal blooms

Hampel, Justyna J. 23 May 2019 (has links)
No description available.
103

Parasites of harmful algal blooms: characterization of cyanophages and chytrids as top-down regulators in Lake Erie

McKindles, Katelyn M. 20 May 2021 (has links)
No description available.
104

Release of Algal Organic Matter from Cyanobacteria during Commercial Algaecide Treatment

Yun, Tae-Suh January 2022 (has links)
No description available.
105

ROLE OF DISSOLVED ORGANIC CARBON IN DETERMINING BACTERIAL COMMUNITY STRUCTURE AND FUNCTION IN AQUATIC ECOSYSTEMS: IS STRUCTURE RELATED TO FUNCTION

Moitra, Moumita 16 April 2012 (has links)
No description available.
106

Environmental Isolations, Community Nutrient Ratio Effects, and Allelopathy of Microcystis from Grand Lake Saint Mary's

Marshall, Randall S. 28 October 2014 (has links)
No description available.
107

Diel regulation of metabolic functions of a western Lake Erie Microcystis bloom informed by metatranscriptomic analysis

Davenport, Emily J. 14 December 2016 (has links)
No description available.
108

Investigation of Microcystis Cell Density and Phosphorus in Benthic Sediment and Their Effect on Cyanobacterial Blooms on Western Lake Erie in the Summer of 2009

Lange, Erik David 09 September 2010 (has links)
No description available.
109

Quantification of Microcystis in the Waters of Western Lake Erie and the Maumee River in the Summer of 2009

Wambo, Kathryn Ann 09 September 2010 (has links)
No description available.
110

Remoção de células e subprodutos de Microcystis spp. por dupla filtração, oxidação e adsorção / Removal of cells and by-products of Microcystis spp. in double filtration, oxidation and adsorption processes

Kuroda, Emília Kiyomi 18 December 2006 (has links)
Considerando o aumento da ocorrência de florações de cianobactérias e a possibilidade de formação de subprodutos em diversos mananciais destinados ao consumo humano, este trabalho teve como objetivo, avaliar a remoção de células e subprodutos de Microcystis spp. pelos processos de dupla filtração com filtração ascendente em pedregulho e de filtração descendente em areia, oxidação e adsorção com carvões ativados pulverizado e granular. Na fase 1 foram realizados ensaios de bancada para estabelecimento das condições operacionais dos ensaios a serem realizados em instalação piloto, utilizando-se água de estudo preparada com adição de cultura de cepa tóxica de Microcystis spp. e ou extrato de microcistinas. Em seguida, foram realizados ensaios em instalação piloto de escoamento contínuo para águas de estudo preparadas com adição de cultura de cepa tóxica de Microcystis spp. e de extrato de microcistinas – fase 2 e de material coletado no reservatório de Barra Bonita – SP - fase 3. A concepção de dupla filtração utilizada mostrou ser bastante eficiente na remoção de células de Microcystis spp. e, consequentemente, de microcistinas intracelulares, porém, a remoção ou degradação de microcistinas extracelulares só foi significativa com o emprego de processos complementares de oxidação e ou adsorção. Para as águas de estudo empregadas, não houve formação expressiva de subprodutos organohalogenados nos efluentes dos processos de tratamento, após serem submetidas à cloração e tempo de contato de 1 dia. Adicionalmente, foram realizados estudos prospectivos no sentido de avaliar a toxicidade de extrato, águas de estudo e efluentes dos processos de tratamento por meio de bioensaios com cladóceros e camundongos, além de biomonitoramento com a espécie de peixe Danio rerio. / Considering the increase in the frequency of cyanobacterial blooms and the possibility of by-product formation in water supply sources for human consumption, this work was carried out in order to evaluate the removal of cells and by-products of Microcystis spp. using the processes of double filtration (gravel upflow filtration of coagulated water followed by rapid sand downflow filtration), oxidation and adsorption in powdered and granular activated carbons. Bench scale assays were performed in phase 1 to determine the operational conditions of the tests to be performed in a continuous flow pilot plant, using a study water prepared with filtered water in the water treatment plant 2 of Sao Carlos and culture of a toxic strain of Microcystis spp. and/or microcystins extract. Based on the conditions stated in phase 1, phase 2 was carried out by performing tests in the pilot plant for study waters prepared with culture of toxic strain of Microcystis spp. and phase 3 of microcystins extract from material collect in the de Barra Bonita – SP reservoir. The double filtration system used resulted very efficient concerning the removal of cells of Microcystis spp., but, on the other hand, the removal or degradation of extracellular microcystins was significant with the use of complementary processes such as oxidation and or activated carbon adsorption. With regards to the waters studied, there wasn’t significant formation of by-products due to the oxidation of the effluent of each combination of processes, when submitted to chlorination with detention time of 1 day. Additionally, it was observed the toxicity effect by bioassays with crustaceans and mices, besides Danio rerio fish screening.

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