Marupiara - Artigos de Periódicos

URI permanente para esta coleçãohttps://ri.uea.edu.br/handle/riuea/5715

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Análise preliminar das alterações do clima no bairro Parque Dez de Novembro nos últimos três anos (2010 a 2013)
(Universidade do Estado do Amazonas, 2019-01-16) Vilhena, Flávia da Silva; Albuquerque, Carlossandro Carvalho de; Andrade Filho, Valdir; Batista, Ieda Hortêncio; Ferreira, Francisca da Silva
This article shows the importance of studying the microclimate in urban sites. The goal is a comparative analysis of possible changes in the microclimate of Ten November Park neighborhood in the three years 2010 to 2013. The methodology adopted in this research is a quantitative evaluation of the literature surveys, data collected at the meteorological station of the National Institute of Meteorology (INMET) and Amazonas State University (UEA / EST), in addition to research in loco. The results allowed to see how the changes in the urban site changes the air heating and changes the environment of the microclimate in the neighborhood. Keyword: Climate; Anthropic; Plant coverage; Weather station.
Otimização das condições de crescimento de fungos degradadores de madeira
(Universidade do Estado do Amazonas, 2019-01-16) Ferreira, Francisca da Silva; Batista, Ieda Hortencio; Ferreira, Amilcar da Silva; Albuquerque, Carlossandro Carvalho de; Silva, Ademir Castro e
This paper concerns to factors that might has influence on growth and ligninolitic activity of Pycnoporus sanguineus (L.:F.) Murr and Trametes sp fungi. Fruit bodies were collected at urban perimeter of municipalitties Manaus and Manacapuru, State of Amazonas, Brazil. To study growth optimal conditions the following parameters were analyzed: pH, temperature and nitrogem sources ((NaNO3 e (NH4)2SO4 on different concentrations). Growth rate avaliation was done through measurement of micelial growth in solid media extract of malte. The results shown the pH 5-6 optimal for both fungi while temperature optima in the range 30-35 °C. Growth in different nitrogen sources didn't shown significative at 95% level of probability. However, absolute values were highiest at 30 mEq/ML concentration of sodium nitrate. This study allows us to move into new research as it was possible to identify the optimum ranges of pH, temperature and nitrogen source for mycelial growth. Keywords: Degrading fungi; wood; Amazon.
Potencial para produção de biossurfactantes em bactérias isoladas de macrófita aquática na Amazônia
(Universidade do Estado do Amazonas, 2019-01-16) Batista, Ieda Hortêncio; Albuquerque, Carlossandro Carvalho de; Ferreira, Francisca da Silva; Veiga Jr, Valdir Florêncio; Pereira, José Odair
In the process of petroleum hydrocarbon biodegradation is a direct relationship between the degradation of these compounds and the production of biosurfactants. These molecules have attracted much commercial interest because its lower cost and higher efficiency than synthetic surfactants. This study verified the potential for the production of biosurfactants by evaluating emulsification activity in bacterial strains isolated in selective medium from the Amazon macrophyte Eichornnia crassipes and selected those with the greatest potential. Growth of strains was evaluated in mineral medium with hydrocarbon mixture and mineral medium with crude oil. The index of toxicity was evaluated in extracts of media with hydrocarbon mixture of five linhagenss that showed better growth. In the middle with crude oil there was better bacterial growth, highlighting the strain Stenotrophomonas sp. which reached about 13,4x106 CFUs / mL. The bacterial growth in the media used indicated the degradation of petroleum hydrocarbons, considering that these were the only carbon source. The strains that showed best results were Stenotrophomonas sp., Klebsiella sp., Enterobacter sp., Methylobacterium radiotolerans and Acinetobacter baumannii. They stood out in the production of biosurfactants the Stenotrophomonas sp strains and Methylobacterium radiotolerans, with better results in the middle with oil. The indices of toxicity showed better results in extracts of bacterial growth compared to the extracts controls. Thus, it is considered that the studied strains have significant potential as biosurfactants producing deserves additional studies to prove this production. Keywords: Bacteria; macrophyte, biosurfactants bioremediation, Amazon.