Programa de Pós-Graduação em Agronomia
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Navegando Programa de Pós-Graduação em Agronomia por Assunto "6. Água potável e saneamento"
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- DissertaçãoAcesso aberto (Open Access)Análise da fragilidade e do conflito de uso do solo em área de recarga do Aquífero Guarani(Universidade Estadual do Norte do Paraná, 2014-05-26) Andrade, Daniel Campanelli de; Reis, Teresinha Esteves da Silveira; https://orcid.org/0000-0001-6379-4790; http://lattes.cnpq.br/5705088234641018; Reis, Teresinha Esteves da Silveira; https://orcid.org/0000-0001-6379-4790; http://lattes.cnpq.br/5705088234641018; Caviglione, João Henrique; https://orcid.org/0000-0002-2518-0031; http://lattes.cnpq.br/8720140370218094; Reis, Luiz Carlos; https://orcid.org/0000-0003-2193-8535; http://lattes.cnpq.br/4310404758664835; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Medri, Cristiano; https://orcid.org/0000-0003-2413-9376; http://lattes.cnpq.br/5988159401368852This essay had the aim of evaluating the fragility and the conflict of the use of soils from six watersheds on the recharging area of Guarani Aquifer, on the Rio das Cinzas’s medium watershed, Norte Pioneiro Paraná. From the using of geotechnologies and the Boolean logic for maps creation, it was possible to gather data referring to the current use of the soil, erosion’s natural potential (ENP), agricultural aptitude of the grounds and to end, the analyses of the conflict of the soil’s use. These are essential studies to prevent environmental impact, whose results enable planning in search of sustainability. The results demonstrated the high potential of soil loss, confirming the fragility of the region. In relation to the uses, it was found all the predetermined sorts, water, urban, forest, silviculture, farming and pasture, standing out the last two ones. The lands of the study area of the search shows a lot of agriculture aptitudes, from the good for farming up to the regular for pasture. The analyses’ result about the conflict of the soil’s use demonstrated the lack of planning when choosing the cultivation implanted, presenting vast areas with underutilization of the soil and some of them with overutilization. This lack of planning combined with the fragility in potential presented's by the soils might bring about significant losses, less agricultural productivity and direct impacts on Guarani Aquifer’s recharging.
- DissertaçãoAcesso aberto (Open Access)Atividade larvicida e caracterização fitoquímica do extrato hidroetanólico de Ruta graveolens L. contra Aedes aegypti(Universidade Estadual do Norte do Paraná, 2026) Costa, Poliana Caruline Rosa da; Peixoto, Erika Cosendey de Mello; https://orcid.org/0000-0002-9608-4282; http://lattes.cnpq.br/0963818563395019; Rodrigues, Diego Resende; https://orcid.org/0000-0002-9495-8943; http://lattes.cnpq.br/9381400899886153; Rodrigues, Diego Resende; https://orcid.org/0000-0002-9495-8943; http://lattes.cnpq.br/9381400899886153; Bovolenta, Yves Rafael; https://orcid.org/0000-0001-9684-1848; http://lattes.cnpq.br/4601902582773437; Silva, José Renato da; https://orcid.org/0000-0002-8289-7768; http://lattes.cnpq.br/8034221689854743The increase in diseases transmitted by mosquito vectors and the resistance associated with the continuous use of synthetic insecticides highlight the need for effective and environmentally safe alternatives. Therefore, this study aimed to evaluate the larvicidal activity of the hydroethanolic extract of Ruta graveolens L. against Aedes aegypti larvae, as well as to chemically characterize the extract. The extract was obtained by maceration in a 70% hydroethanolic solution, followed by concentration and lyophilization. A. aegypti eggs were collected using ovitraps in the municipality of Bandeirantes, Paraná, Brazil, and the larvae were reared to the L3 and L4 stages. Larvicidal bioassays were performed in quadruplicate, with 40 larvae per treatment, using concentrations of 0.25, 0.5, and 1 mg/mL, along with positive and negative controls. After 48 hours of exposure, mortality rates of 65% were observed at concentrations of 0.25 and 0.5 mg/mL, whereas the concentration of 1 mg/mL resulted in 100% mortality, a result equivalent to the commercial larvicide used as positive control. Phytochemical analysis revealed high levels of total phenolics (58.76 ± 1.70 mg GAE/g) and total flavonoids (41.55 ± 1.30 mg QE/g). LC-MS/MS analysis confirmed the presence of rutin in the extract, while quercetin was not detected. These results demonstrate the strong larvicidal potential of the hydroethanolic extract of R. graveolens, particularly at the concentration of 1 mg/mL, indicating its viability as an alternative for A. aegypti control and supporting further studies to determine lethal doses and assess toxicological safety.
- DissertaçãoAcesso aberto (Open Access)Potencial poluidor de cemitério(Universidade Estadual do Norte do Paraná, 2016-03-29) Silva, Diego Contiero da; Reis, Teresinha Esteves da Silveira; https://orcid.org/0000-0001-6379-4790; http://lattes.cnpq.br/5705088234641018; Reis, Teresinha Esteves da Silveira; https://orcid.org/0000-0001-6379-4790; http://lattes.cnpq.br/5705088234641018; Reis, Luiz Carlos; https://orcid.org/0000-0003-2193-8535; http://lattes.cnpq.br/4310404758664835; Gimenez, Sonia Maria Nobre; http://lattes.cnpq.br/3316258548510799; Tashima, Hatiro; https://orcid.org/0009-0008-8757-4600; http://lattes.cnpq.br/0514640010249563; Branco Jr., Armando Castello; https://orcid.org/0000-0002-2848-1649; http://lattes.cnpq.br/4312211430458846Cemeteries are potential sources of enviromental impacts, principally for the risk of contamination of groundwater and surface water by microorganisms proliferate during decomposition process of bodies and chemical substances released. Contamined water may be used by neighborhood population. Major contaminant from cemiteries is leachate. With the objective to evaluate pollution potential of municipal cemetery of Bandeirantes/PR in groundwater and soil, samples wells were drilled in cemetery area and in an external area 30 meters away. Soil samples were collected during the samples wells drilling in three differents depths and water for analysis. Water samples were evaluated in SAAE laboratory in Bandeirantes/PR, according to the water potability standarts from ordinance 2.914/2011 of Ministery of Health and soil samples were sent to the soil laboratory to quantify heavy metal levels. Water samples had microbiological parameters above potability standards and soil samples had copper, chrome and nickel values above the references standards in differents depths.