Steroselective synthesis of imidazolidin-4-ones from α-amino amides of the antimalarial primaquine and substituted benzaldehydes [PDF]
, 2006 Imidazolidin-4-ones are commonly employed as skeletal modifications in bioactive oligopeptides, either as proline surrogates or for protection of the N-terminal amino acid against aminopeptidase-catalysed hydrolysis .
Ferraz, Ricardo +5 more
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Antimicrobial Activity and Chemical Composition of the Essential Oils of Portuguese Foeniculum vulgare Fruits [PDF]
, 2015 The aim of this study was to investigate the chemical composition and antimicrobial activity of essential oils obtained by hydrodistillation from fruits of six fennel accessions collected from wild populations occurring in the centre and south of ...
Arantes, Silvia +7 more
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Nanotubos de carbono como suportes para catalisadores de platina [PDF]
, 2004 Desde a sua descoberta em 19911, que os nanotubos de carbono tem sido amplamente estudados, devido à sua elevada resistência mecânica, excelentes propriedades eléctricas e térmicas e adequação como suporte de catalisadores heterogéneos para reacções em
Faria, Joaquim +5 more
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The reinfection threshold [PDF]
, 2009 Thresholds in transmission are responsible for critical changes in infectious disease epidemiology. The epidemic threshold indicates whether infection invades a totally susceptible population.
Gomes, M. G. M. +2 more
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Tarefas em geometria: da sala de aula para a formação de professores, descrição de um projeto [PDF]
, 2012 Neste poster, apresentamos um projeto que pretende abordar de forma conglomerada conhecimentos, raciocínios, argumentação e representações de alunos e professores dos primeiros anos.
Aires, Ana Paula +11 more
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Carbon nanotubes: a suitable material for catalytic wet peroxide oxidation of organic pollutants? [PDF]
, 2012 Carbon materials, such as activated carbons (AC), graphite and activated carbon xerogels, have been explored as metal-free catalysts for the catalytic wet peroxide oxidation (CWPO) of bio-refractory organic compounds, such as azo dyes and phenolic ...
Faria, Joaquim +3 more
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Journal of HelminthologyAbstract The genus Enenterum Linton, 1910 comprises species which parasitize herbivorous kyphosid fish. In the present study, a new species is described based on fresh specimens collected from Kyphosus incisor from Rio de Janeiro. The new species is characterized by having the oral sucker infundibuliform with 10 lobes, prepharynx two times longer ...
C. Portes Santos +2 more
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Wear mechanisms in functionally graded aluminium matrix composites: Effect of the presence of an aqueous solution [PDF]
, 2005 Functionally graded aluminium matrix composites reinforced with SiC particles are attractive materials for a broad range of engineering applications in the automotive, aircraft, sports, military and aerospace industries, whenever a superior combination ...
Gomes, J. R. +4 more
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Diffusion of coloured silica nanoparticles into human hair [PDF]
, 2010 A novel method for dyeing human hair fibres using coloured silica nanoparticles of 206 nm has been developed. Diffusion of coloured silica nanoparticles into hair fibres has been investigated; silica nanoparticles do not penetrate at all, or do so only
Gomes, Jaime Rocha +2 more
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Fe containing silica gel catalysts for catalytic wet peroxide oxidation processes [PDF]
, 2008 The degradation of pollutants by catalytic wet peroxide oxidation (CWPO) using the Fenton’s reagent is a well known process, the major drawback being the need to recover the iron catalyst at the end of treatment.
Amaro, Catarina +5 more
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