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Monitoring strategies for “Ponta da Ferraria e Pico das Camarinhas” geosite (S....
Lima, A.; Nunes, J. C.; Brilha, J. B.This paper presents an ongoing work that is being developed under the scope of a master thesis. “Ponta da Ferraria e Pico das Camarinhas” is a protected area and a geosite with high geological relevance in S. Miguel Island, Azores archipelago, Portugal. Because of its importance for the Azores Geopark geoconservation strategy, a monitoring work has been under development during the last year in order to assure ...
Ultrafiltration of supercoiled plasmid DNA : modeling and application
Morão, A.; Nunes, J. C.; Sousa, Fani; Amorim, M. T. Pessoa de; Escobar, I. C.; Queiroz, J. A.A mass transfer model is proposed for predicting sieving coefficients, Sobs, of supercoiled plasmid DNA (pDNA), in the presence of a salt, in membranes with narrow pores, i.e., pores smaller than the gyration radii of the plasmids to be considered for a certain application. The model assumes that permeation occurs due to plasmid suction at the membrane surface as a result of the convective flow, being the proba...
The national inventory of geosites in Portugal
Brilha, J. B.; Alcalá, A.; Almeida, A.; Araújo, A.; Azerêdo, Ana; Azevedo, M. R.; Barriga, Fernando; Silveira, A. Brum; Cabral, J.; Cachão, M.During the last three years geoscientists of various institutions have developed a project aiming the setup of a geoconservation strategy in Portugal (Brilha, 2009). One of the main goals of the project was the establishment of an inventory of the most important Portuguese geosites, under the scientific point of view. In a near future, national authorities will consider this inventory as a technical support for...
O inventário nacional do património geológico : abordagem metodológica e result...
Brilha, José Bernardo; Alcalá, L.; Almeida, A.; Araújo, Alexandre; Azerêdo, Ana Cristina; Azevedo, Maria do Rosário; Barriga, FernandoA existência de um inventário nacional de património geológico é fundamental para se poderem implementar estratégias de geoconservação. Este trabalho apresenta a metodologia usada no desenvolvimento do mais completo inventário de geossítios. realizado até ao momento em Portugal, assim como os principais resultados obtidos. O inventário vai integrar o Sistema de Informação do Património Natural e o Cadastro N...
Development of a model for membrane filtration of long and flexible macromolecu...
Morão, A.; Nunes, J. C.; Sousa, Fani; Amorim, M. T. Pessoa de; Escobar, I. C.; Queiroz, J. A.A model is proposed for predicting the intrinsic rejections of linear flexible molecules, of high molecular dimensions, in microfiltration and ultrafiltration membranes. The developed model is based on the available theory of hindered transport of solutes through narrow pores, assuming that convection is the only relevant transport mechanism. For the application of the model, partition coefficients of the solut...
Texture and colour kinetics of change in blanched carrots
Gongalves, E.M.; Nunes, J.C.; Silva, C.L.M.Five Isothermal heating experiments, at different temperatures and at predetermined time intervals, were carried out on diced carrots. The objective of this study was to determine the degradation kinetics of colour (a and a/b parameters) and texture (work and maximum force) along blanching. The best model to fit the degradation kinetic data was the fractional conversion and the temperature effect was well descr...
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