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Mostrando ítems 21-30 de 191
Avaliação do comportamento eletroquímico de juntas soldadas de aço inoxidável supermartensítico por feixe de elétrons baixo vácuo
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM, 2007-02-28)
The electrochemical evaluation of low vacuum electron beam weldments of supermartensitic stainless steel was carried out in terms of anodic polarization in potentiodynamic regime, intergranular corrosion by double loop ...
Avaliação eletroquímica de juntas soldadas por fricção radial de aços inoxidáveis supermartensíticos
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM, 2007-03-23)
Supermartensitic stainless steels are used in the oil and gas industry to the construction of line pipes which require welding operations. This process affects the corrosion resistance of the welded joint. Recently, new ...
Twisted Flux Tube Emergence Evidenced in Longitudinal Magnetograms: Magnetic Tongues
(Springer, 2011-05)
Bipolar active regions (ARs) are thought to be formed by twisted flux tubes, as the presence of such twist is theoretically required for a cohesive rise through the whole convective zone. We use longitudinal magnetograms ...
Antifungal activity of bacterial strains from the rhizosphere of Stachytarpheta crassifolia
(ACADEMIC JOURNALS, 2011)
This study evaluated the antifungal action of biomolecules produced from the secondary metabolism of bacterial strains found in the rhizosphere of semi arid plants against human pathogenic Candida albicans. Crude extracts ...
Estandarización del método de bioautografía directa como estrategia para la evaluación de extractos naturales como antimicrobianos frente a Escherichia coli y Staphylococcus aureus
(Universidad de Cuenca, 2022-10-12)
Direct bioautography is a fast and simple method that has the advantage of detecting
antimicrobial activity on chromatographic plates, allowing us to directly observe the
fractions showing such activity. The present work ...
Avaliação de contaminação com óleo diesel por meio dos métodos de Eletrorresistividade e Polarização Induzida em Santa Ernestina-SP
(Universidade Estadual Paulista (UNESP), 2016)
Characterization of the dissolved organic matter present in the water of the Bío-Bío river, VIII Region of Chile
(Sociedad Chilena Química, 2016)
The dissolved organic matter in rivers has different origin and its composition can vary both by natural conditions and the anthropic activity that takes place near rivers. This mobile fraction of the organic matter is ...
Antimicrobial activity of four Valeriana (Caprifoliaceae) species endemic to the Venezuelan Andes
(Universidad de Costa Rica, 2018)