The faunal assemblage from the Ateneu Artístico Vilafranquense site, Vila Franca de Xira (15th-16th centuries)

UIDB/04666/2020 UIDP/04666/2020The archaeological intervention in the Ateneu Artístico Vilafranquense site in 2007, in the context of preventive archaeology, revealed data about the urban center of Vila Franca de Xira during the Late Middle Ages and Early Modern Age. This site consists of various negative structures filled with materials whose analysis allowed us to define several occupation phases situated between the town’s founding in the 13th century and the present. The study of the entire set of materials from the intervention, made up of ceramics, faunal remains, glass, metals and lithic materials, allowed us to infer the domestic nature of this context formed by the urban population’s consumption remains. We present the final results of the faunal assemblage analysis, composed by a total of 1070 remains mostly associated with 15th and 16th century levels. The study of these materials denotes the predominance of mammals, mainly cattle and sheep/goat, which would have been the most important sources of meat for this population. Their subsistence would have been complemented by birds, fishes and mollusks, beyond other mammals like suids, leporids and, possibly, cervids. Although most identified species belong to domestic animals, the presence of wild species was detected, marking the practice of hunting and fishing. Other domestic species are associated with the population’s daily life, namely the cat and the horse. In the marine species, the presence of sardine can be highlighted in the fish assemblage, while the mollusks are mainly represented by cockle and mussels. Chicken and ducks makeup most of the avian assemblage. These results can be compared to others obtained in Lisbon and Santarém.publishersversionpublishe

Symplectic and Poisson geometry on b-manifolds

Let M2nM2n be a Poisson manifold with Poisson bivector field Π. We say that M is b -Poisson if the map Πn:M→Λ2n(TM)Πn:M→Λ2n(TM) intersects the zero section transversally on a codimension one submanifold Z⊂MZ⊂M. This paper will be a systematic investigation of such Poisson manifolds. In particular, we will study in detail the structure of (M,Π)(M,Π) in the neighborhood of Z and using symplectic techniques define topological invariants which determine the structure up to isomorphism. We also investigate a variant of de Rham theory for these manifolds and its connection with Poisson cohomology

From b-Poisson manifolds to symplectic mapping tori and back

Postprint (published version

Symplectic and Poisson geometry on b-manifolds

Let M2n be a Poisson manifold with Poisson bivector field . We say thatM is b-Poisson if the map n : M ! 2n(TM) intersects the zero section transversally on a codimension one submanifold Z M. This paper will be a systematic investigation of such Poisson manifolds. In particular, we will study in detail the structure of (M, ) in the neighbourhood of Z and using symplectic techniques define topological invariants which determine the structure up to isomorphism. We also investigate a variant of de Rham theory for these manifolds and its connection with Poisson cohomologyPreprin

Toric actions on b-symplectic manifolds

We study Hamiltonian actions on b-symplectic manifolds with a focus on the e ective case of half the dimension of the manifold. In particular, we prove a Delzant-type theorem that classi es these manifolds using polytopes that reside in a certain enlarged and decorated version of the dual of the Lie algebra of the torus. At the end of the paper we suggest further avenues of study, including an example of a toric action on a b 2-manifold and applications of our ideas to integrable systems on b-manifoldsPreprin

Teacher education during the COVID-19 Lockdown: Insights from a formative intervention approach involving online feedback

This paper examines preservice teachers’ perspectives on assessment feedback developed in a teacher education course during the first lockdown due to the COVID-19 pandemic. As initially negotiated with students, feedback was learner-centred and involved a formative intervention approach applied iteratively by the teacher educator over the course of one semester. Although such feedback was initially face-to-face, it had to be given exclusively online following the unexpected closure of the university. Analysis of student teachers’ perspectives, which were collected through an online questionnaire completed after their final assessment, reveals both positive and critical aspects regarding the feedback provided by the teacher educator. While reaffirming the significance of feedback as a crucial element for learning in online teacher education contexts, the findings also show that the clarity, affective bonding and multimodal meaning-making involved in face-to-face interaction are particularly challenging when the communication of feedback is digitally mediated. The implications and limitations of such findings are discussed.This work is supported through national funds of FCT/MCTES-PT by CIEd—Research Centre on Education, Institute of Education, University of Minho, projects UIDB/01661/2020 and UIDP/01661/2020, and by CIEC—Research Centre on Child Studies, Institute of Education, University of Minho, projects UIDB/00317/2020 and UIDP/00317/2020

Utensílios em osso provenientes de uma intervenção arqueológica no Largo das Olarias/Travessa do Jordão, Lisboa

UIDB/04666/2020 UIDP/04666/2020publishersversionpublishe

Microalgal Cultures for the Bioremediation of Urban Wastewaters in the Presence of Siloxanes

Microalgae are widely used in the bioremediation of wastewaters due to their efficient removal of pollutants such as nitrogen, phosphorus, and contaminants of emerging concern (CECs). Siloxanes are CECs that reach wastewater treatment plants (WWTPs), leading to the production of biogas enriched with these compounds, associated with the breakdown of cogeneration equipment. The biological removal of siloxanes from wastewaters could be a sustainable alternative to the costly existing technologies, but no investigation has been performed using microalgal cultures for this purpose. This study evaluated the ability of Chlorella vulgaris to bioremediate primary (PE) and secondary (SE) urban effluents and remove volatile methylsiloxanes (VMSs). C. vulgaris grew successfully in both effluents, and approximately 86% of nitrogen and 80% of phosphorus were efficiently removed from the PE, while 52% of nitrogen and 87% of phosphorus were removed from the SE, and the presence of VMSs does not seem to have a negative influence on nutrient removal. Three out of the seven of the analysed VMSs were detected in the microalgal biomass at the end of the PE assay. However, dodecamethylcyclohexasiloxane (D6) was the one that accumulated to a greater extent, since 48% of the initial mass of D6 was detected in the biomass samples. D6 is one of the most lipophilic VMSs, which might contribute to the higher adsorption onto the surface of microalgae. Overall, the results indicate C. vulgaris' potential to remove specific VMSs from effluents

Analyzing Feshbach resonances -- A 6^6Li -133^{133}Cs case study

We provide a comprehensive comparison of a coupled channels calculation, the asymptotic bound state model (ABM), and the multichannel quantum defect theory (MQDT). Quantitative results for $^6$Li -$^{133}$Cs are presented and compared to previously measured $^6$Li -$^{133}$Cs Feshbach resonances (FRs) [M. Repp et al., Phys. Rev. A 87 010701(R) (2013)]. We demonstrate how the accuracy of the ABM can be stepwise improved by including magnetic dipole-dipole interactions and coupling to a non-dominant virtual state. We present a MQDT calculation, where magnetic dipole-dipole and second order spin-orbit interactions are included. A frame transformation formalism is introduced, which allows the assignment of measured FRs with only three parameters. All three models achieve a total rms error of < 1G on the observed FRs. We critically compare the different models in view of the accuracy for the description of FRs and the required input parameters for the calculations.Comment: 16 pages, 3 figures, 1 tabl