Bacteria Archaea
Mostrando 1-12 de 347 artigos, teses e dissertações.
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1. Population Changes of Eubacteria, Sulfate-Reducing Bacteria and Methanogenic Archaea in an Anaerobic Reactor Processing Ethanol Distillery Vinasse
Abstract The microbiological characterization by molecular techniques (DGGE and quantitative PCR) of Archaea, Bacteria domain and sulfate-reducing bacteria (SRB) from a laboratory scale Up-flow Anaerobic Sludge Blanket (UASB) processing sugar cane vinasse was performed during the operational phase with increasing organic loads. The organic load removal effic
Braz. arch. biol. technol.. Publicado em: 13/06/2019
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2. Exploring tRNA gene cluster in archaea
BACKGROUND Shared traits between prokaryotes and eukaryotes are helpful in the understanding of the tree of life evolution. In bacteria and eukaryotes, it has been shown a particular organisation of tRNA genes as clusters, but this trait has not been explored in the archaea domain. OBJECTIVE Explore the occurrence of tRNA gene clusters in archaea. METHO
Mem. Inst. Oswaldo Cruz. Publicado em: 07/01/2019
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3. Reviewing Microbial Behaviors in Ecosystems Leading to a Natural Quorum Quenching Occurrence
ABSTRACT Quorum sensing is considered one of the most important discoveries in cell-to-cell communication. Although revealed in Bacteria, it has been identified as well as a mechanism present in the other two domains, Eukaryota and Archaea. This phenomenon consists mainly of an exchange and sensing of "words" produced by each cell: chemical signals known as
Braz. arch. biol. technol.. Publicado em: 22/06/2017
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4. Replacement of native vegetation alters the soil microbial structure in the Pampa biome
ABSTRACT: Land use change is one of the the major factors related to soil degradation and alterations in soil microbial diversity and structure. In this study, we aimed to evaluate the microbial shifts caused by deforestation of a small area of a natural forest for the introduction of a pasture in the Brazilian Pampa. The microbial abundance and structure we
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-02
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5. Distribuição das comunidades de Arquéias e Bactérias em um reservatório subtropical.
Resumo: Objetivo As comunidades microbianas desempenham papel crucial nos processos ambientais como na mineralização de matéria orgânica e ciclagem de nutrientes em ambientes aquáticos. No entanto, apesar da importância ecológica de archaea e bactéria em ambientes aquáticos, a estrutura destas comunidades permanece pouco estudada. Métodos Neste s
Acta Limnol. Bras.. Publicado em: 2015-12
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6. Bacterial and Archaeal Communities Variability Associated with Upwelling and Anthropogenic Pressures in the Protection Area of Arraial do Cabo (Cabo Frio region - RJ)
RESUMOOs sistemas de ressurgência possuem uma grande diversidade de microrganismos pelágicos e sua composição e atividade são determinadas por fatores como a temperatura e a concentração de nutrientes. A técnica de Electroforese em Gel por Gradiente Desnaturante (EGGD) foi utilizada para verificar a variabilidade genética espacial e temporal de Bact
An. Acad. Bras. Ciênc.. Publicado em: 15/09/2015
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7. Large scale distribution of bacterial communities in the upper Paraná River floodplain
A bacterial community has a central role in nutrient cycle in aquatic habitats. Therefore, it is important to analyze how this community is distributed throughout different locations. Thirty-six different sites in the upper Paraná River floodplain were surveyed to determine the influence of environmental variable in bacterial community composition. The site
Braz. J. Microbiol.. Publicado em: 2014-12
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8. Influence of co-substrates in the anaerobic degradation of an anionic surfactant
The removal of linear alkylbenzene sulfonate (LAS) was evaluated in a UASB reactor using short-chain alcohols (ethanol and methanol) and complex co-substrate (yeast extract). Using only methanol and ethanol as co-substrates resulted in removal of LAS between 30 and 41%. At the end, addition of a complex substrate (yeast extract) increased the removal of LAS
Braz. J. Chem. Eng.. Publicado em: 2013-09
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9. Ardra profiles of bacteria and archaea in mangrove sediments with different levels of contamination in the estuarine complex of Paranaguá, Brazil
The mangrove's sediments from the coastal areas under human activities may contain significant contaminations by hydrocarbons, even when there are no visual evidences of it. The microorganisms are essential to these ecosystems, especially in the control of their chemical environment. Sediment samples were collected in two regions under different environment
Braz. arch. biol. technol.. Publicado em: 2013-04
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10. A estrutura e composição de comunidades microbianas (Bacteria e Archaea) em fragmentos de carvão pirogênico de Terra Preta de Índio da Amazônia Central / Structure and composition of bacterial communities (Bacteria and Archaea) in fragments of pyrogenic charcoal from Amazonian Dark Earth in the Central Amazon
Amazonian Dark Earth (ADE), also known as Terra Preta de Índio, present tropical A horizon, high pH, important nutrients for plant growth, high pyrogenic charcoal levels and intense biological activity when compared to its soil of origin. Soil microbial community is essential for ecosystem function, which is involved in fundamental processes such as the dec
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2012
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11. Diversidade de Bacteria e Archaea em solos de Mata Atlântica no estado de São Paulo / Bacterial and archaeal diversity in soil from Atlantic forest of São Paulo State
A Mata Atlântica é um bioma constituído de vários ecossistemas e considerado um hotspot da biodiversidade mundial. Sua extensão vai do Rio Grande do Sul até o Piauí, compondo cerca de 15% do território nacional. Porém, aproximadamente 93% da formação original da Mata atlântica já foi devastada. Seus solos são comumente pobres (baixa disponibili
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/01/2012
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12. Characterization of immobilized biomass by amplified rDNA restriction analysis (ARDRA) in an anaerobic sequencing-batch biofilm reactor (ASBBR) for the treatment of industrial wastewater
The performance of an anaerobic sequencing-batch biofilm reactor (ASBBR- laboratory scale- 14L )containing biomass immobilized on coal was evaluated for the removal of elevated concentrations of sulfate (between 200 and 3,000 mg SO4-2·L-1) from industrial wastewater effluents. The ASBBR was shown to be efficient for removal of organic material (between 90%
Brazilian Archives of Biology and Technology. Publicado em: 2012-08