Background: Cork oak (Quercus suber) is one of the rare trees with the ability to produce cork, a material widely used to make wine bottle stoppers, flooring and insulation materials, among many other uses. The molecular mechanisms of cork formation are still poorly understood, in great part due to the difficulty in studying a species with a long life-cycle and for which there is scarce molecular/genomic inform...
Este trabalho procura analisar a relação entre a atividade laboral e os processos de avaliação cognitiva em bombeiros portugueses. Participaram no estudo 163 bombeiros do distrito do Porto, em Portugal. O protocolo de avaliação incluiu medidas de avaliação cognitiva, stress, burnout, satisfação com a vida e comprometimento organizacional. Os resultados mostraram que 32.5% dos bombeiros descreveram a sua ativida...
Biosurfactant production by three Bacillus subtilis strains (#309, #311 and #573) isolated from Brazilian crude oils was optimized based on different carbon and nitrogen sources. The lowest surface tension values were obtained using sucrose containing media for the three isolates. Biosurfactants produced by each strain were characterized by Fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic...
Whey protein based gelling systems may present several functional roles in food formulations by enhancing textural properties (e.g. mouthfeel), acting as stabilizing agents or by being used as carrier of bioactive substances (e.g. nutraceuticals). The rates and pathways for the production of a protein gel system are controlled by heating conditions, protein concentration, pH, ionic strength, and solvent medium....
We report the study and optimization of orthogonal IM/FSK modulation format systems. These combined modulation formats have been proposed recently to optical labeling of high speed IP packets through DWDM networks. Numerical simulation was used to optimize the optical filter bandwidth of FSK demodulator and to obtain the variation of FSK performance with different FSK and IM b...
The quantitative methods have been questioned, mostly because at certain points they served as tools to identify the poorest countries as being the most corrupt and the most developed one, such as Germany, as being the least corrupt. In the end, the criticism to the econometric models of the German school and, specially, the example of International Transparency turned out to become an ideological fight between...
Elaborar uma Economia Política da Corrupção, como falha do Estado, é reconhecer que o Estado serve elites e é necessária legislação concreta para limitar a actuação e os excessos da classe política e dos funcionários da Administração. A questão central para tese é a da verificação da existência de uma relação entre a pobreza e o nível de corrupção nos Estados Lusófonos, medida pela Transparency International. D...
A campanha de geofísica SAMI-1 realizada ao largo da Ilha de S. Miguel (Açores) permitiu a aquisição de perfis sísmicos de alta resolução (Boomer) e de batimetria detalhada. Estes dados possibilitaram a definição das áreas mais promissoras em inertes (areias e cascalhos) na plataforma insular de S. Miguel. Deverão ser efectuados estudos de pormenor de forma a caracterizar estas áreas, para servirem de apoio ...
Revista Lusófona de Ciências Sociais
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