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A New Approach for Disruption Management in Airline Operations Control
Antonio J. M. Castro; Ana Paula Rocha; Eugenio OliveiraMost of the research efforts dealing with airline scheduling have been done on off-line plan optimization. However, nowadays, with the increasingly complex and huge traffic at airports, the real challenge is how to react to unexpected events that may cause plan-disruptions, leading to flight delays. Moreover these disruptive events usually affect at least three different dimensions of the situation: the aircraf...
PAH air pollution at a Portuguese urban area: carcinogenic risks and sources id...
Slezakova, Klara; Pires, J. C. M.; Castro, Dionísia; Alvim-Ferraz, Maria da Conceição M.; Delerue-Matos, Cristina; Morais, S.; Pereira, Maria do CarmoThis study aimed to characterize air pollution and the associated carcinogenic risks of polycyclic aromatic hydrocarbon (PAHs) at an urban site, to identify possible emission sources of PAHs using several statistical methodologies, and to analyze the influence of other air pollutants and meteorological variables on PAH concentrations.The air quality and meteorological data were collected in Oporto, the second l...
Acidose Tubular Renal Distal e Surdez Neurossensorial com Mutação no Gene ATP6V1B1
Periquito, I; Casimiro, A; Santo, C; D’Elia, C; Abranches, M; Castro, IA acidose tubular renal distal é uma doença rara, caracterizada pela incapacidade na acidificação da urina, condicionando acidose metabólica hiperclorémica, hipocaliémia, hipercalciúria e nefrocalcinose, o que poderá causar atraso de crescimento, alteração do metabolismo ósseo e insuficiência renal crónica. A acidose tubular renal distal associada a surdez neurossensorial é uma doença de herança autossómica rec...
Band nesting and the optical response of two-dimensional semiconducting transit...
Carvalho, A.; Ribeiro, R. M.; Castro Neto, A. H.We have studied the optical conductivity of two-dimensional (2D) semiconducting transition metal dichalcogenides using ab initio density functional theory. We find that this class of materials presents large optical response due to the phenomenon of band nesting. The tendency towards band nesting is enhanced by the presence of van Hove singularities in the band structure of these materials. Given that 2D crysta...
A Distributed Approach to Integrated and Dynamic Disruption Management in Airli...
António J. M. CastroAirline companies make a huge effort to maximize their revenue while keeping their costs at a minimum. This is not an easy task and, because of that, airline companies invest in tools that allow to optimize their operational schedule. Unfortunately, any operational plan has a strong probability of being affected, not only by large disruptions like the one that happened in April 2010 due to the eruption of the I...
Population mobility and the changing epidemics of HIV-2 in Portugal
Carvalho, A; Valadas, E; França, L; Carvalho, C; Aleixo, M; Mendez, J; Marques, R; Sarmento, A; Doroana, M; Antunes, F; Branco, T; Águas, M; Castro, RINTRODUCTION: Portugal is the European country with the highest frequency of HIV-2 infection, which is mainly concentrated in West Africa. The cumulative number of notified HIV-2 infections in Portugal was 1813 by the end of December 2008. To better characterize the dynamics of HIV-2 infection in the country and to obtain data that may be of use in the prevention of the spread of HIV-2, we evaluated a large poo...
Characterization of soils in an area of prescribed fire
Santos, N.; Šmid, M.; Castro, Ana Cristina Meira; Marques, J. Espinha; Meixedo, João Paulo; Góis, Joaquim; Chaminé, Helder I.; Vivas, A.; Carvalho, E.The prescribed fire is a technique that is often used, it has several advantages. Pedological and hydropedological techniques were tested to assess the prescribed fire changes may cause in soils. This work was performed in Tresminas area (Vila Pouca de Aguiar, Northern Portugal), during February and March 2011. In the present study we applied several techniques. For the field sampling was followed the ISO 10381...
Osteogenic differentiation of two distinct subpopulations of human adipose-deri...
Rada, Tommaso; Santos, T. C.; Marques, A. P.; Correlo, V. M.; Frias, A. M.; Castro, António G.; Neves, N. M.; Gomes, Manuela E.; Reis, R. L.The first stem cells considered for the reconstruction of bone were bone marrow mesenchymal stem cells (BMSCs). Subsequently, cells with similar marker expression panel and differentiation potential were found in new sources of cells, such as adipose tissue. This source of stem cells has a promising future in tissue-engineering applications, considering the abundance of this tissue in the human body, the easy h...
Determination of 2,4,6-trichloroanisole by cyclic voltammetry
Freitas, P.; Dias, Luís G.; Peres, A. M.; Castro, L. M.; Veloso, Ana C. A.The electrochemical reduction of 2,4,6-trichloroanisole (TCA), a chlorinated arene with electron-donating substituents, was evaluated by cyclic voltammetry (CV). TCA is a major concern for the winery industry since it is related with “cork taint”, a wine defect. The results obtained showed that CV could be used to detect and quantify TCA in standard solutions. Linear relationships could be set between the curre...
Characterization of soils in an area of prescribed fire
Santos, N.; Šmid, M.; Castro, Ana Cristina Meira; Marques, J. Espinha; Meixedo, João Paulo; Góis, Joaquim; Chaminé, Helder I.; Vivas, AntónioThe prescribed fire is a technique that is often used, it has several advantages. Pedological and hydropedological techniques were tested to assess the prescribed fire changes may cause in soils. This work was performed in Tresminas area (Vila Pouca de Aguiar, Northern Portugal), during February and March 2011. In the present study we applied several techniques. For the field sampling was followed the ISO 10381...
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