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9901. Select result number 9901
      9901
      

      O território do concelho de Vila Verde, na Idade Média

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      journal article Portugal Open access

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9902. Select result number 9902
      9902
      

      University students' sense of belonging to the home town: the role of residential mobility

      Publication

      In the study of young people's relationships with residential contexts, it is important to consider the role of developmental tasks (e.g. identity construction, academic and professional choices, etc.) in influencing Place Identity and Sense of Community. Residential mobility may represent an adaptive strategy for modifying some aspects of one's identity and a contributing factor to the development of autonomy from the family. Limited attention has been devoted to the study of the ways young people deal with their attachments to old and new places within this process. This study involved 203 university students, attending a large university in the North of Portugal. The aim was to investigate Place Identity (PI) and Sense of Community (SoC) related to the home town, and differences according to residential condition (native vs. temporary resident) and year of attendance (I vs. IV). Among students who moved, the role of motives (forced vs. voluntary) and of residential choices after graduation on PI and SoC were assessed. Results indicated that, among students who moved for academic reasons, SoC and PI related to the home town were lower and decreased from the first to the fourth year. SoC was higher among students who experienced the relocation as a forced choice. Students who anticipated to return to their home town after graduation had higher SoC and PI.

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      journal article Portugal Restricted access

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9903. Select result number 9903
      9903
      

      Fast mineralization and detoxification of amoxicillin and diclofenac by photocatalytic ozonation and application to an urban wastewater

      Publication

      The degradation of two organic pollutants (amoxicillin and diclofenac) in 0.1 mM aqueous solutions was studied by using advanced oxidation processes, namely ozonation, photolysis, photolytic ozonation, photocatalysis and photocatalytic ozonation. Diclofenac was degraded quickly under direct photolysis by artificial light (medium-pressure vapor arc, lambda(exc) > 300 nm), while amoxicillin remained very stable. In the presence of ozone, regardless of the type of process, complete degradation of both organic pollutants was observed in less than 20 min. Photolysis or ozonation on their own led to modest values of total organic carbon (TOC) removal (<6% or 41%, respectively in 180 min), while for photocatalysis (no ozone present) a significant fraction of nonoxidizable compounds remained in the treated water (similar to 15% after 180 min). In the case of photolytic ozonation, the kinetics of TOC removal was slow. In contrast, a relatively fast and complete mineralization of amoxicillin and diclofenac (30 and 120 min, respectively) was achieved when applying the photocatalytic ozonation process. The absence of toxicity of the treated waters was confirmed by growth inhibition assays using two different microorganisms, Escherichia coli and Staphylococcus aureus. Photocatalytic ozonation was also applied to an urban wastewater spiked with both amoxicillin and diclofenac. The parent pollutants were easily oxidized, but the TOC removal was only as much as 68%, mainly due to the persistent presence of oxamic acid in the treated sample. The same treatment allowed the effective degradation of a wide group of micropollutants (pesticides, pharmaceuticals, hormones and an industrial compound) detected in non-spiked urban wastewater.

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      journal article Portugal Restricted access

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9904. Select result number 9904
      9904
      

      Teorias da pintura

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      other Portugal Open access

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9905. Select result number 9905
      9905
      

      Aumento da EIMC nos doentes com lipodistrofia da infecção VIH apesar da melhoria dos factores de risco cardiometabólicos - estudo prospectivo.

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      [abstract]

      conference object Portugal Open access

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9906. Select result number 9906
      9906
      

      Extraction of Salicylic Acid Using Sustainable ATPSs and Respective Immobilization as API-IL at Small Pilot Scale

      Publication

      Active pharmaceutical ingredients (APIs), a class of emerging pollutants present in residual waters, are often found in hospital effluents and are known to pose profound consequences to aquatic environments, such as the feminization of fish, for which finding sustainable extractive methodologies for these chemical species is a must. Aqueous two-phase systems (ATPSs) constitute a liquid-liquid extraction technique with low environmental impact that often results in the use of a salting-out agent, such as tripotassium citrate (K(3)Citrate), to separate two otherwise miscible phases. To increase the solubility of the extracted active pharmaceutical ingredients while preserving their specific properties, one can immobilize them as novel ionic liquids (ILs), and these complex chemical compounds are known as active pharmaceutical ingredients-ionic liquids (API-ILs). In this work, salicylic acid (Sa), a pharmaceutical component with wide medical and industrial applications, was extracted in ATPSs and immobilized as cholinium salicylate. Specifically, the systems {ethyl lactate (1) + Na(3)Citrate or K(3)Citrate or Na(2)Tartrate or NaKTartrate or Na(2)Succinate (2) + water (3)} were used at 298.15 K and 0.1 MPa. To advance large-scale application, the extraction studies were performed at small pilot scale using 500 g of ATPS and with the compositions of the shortest and longest tie-lines, having obtained the largest partition coefficient (K = (10 +/- 2) x 10(1)) and extraction efficiency (E/ % = 98.2 +/- 0.7%) for the longest tie-lines of the ATPSs based on K(3)Citrate and Na(2)Tartrate, respectively. Then, the ATPS based on K(3)Citrate was used to immobilize salicylic acid, and the structures of the synthesized ionic liquids (cholinium salicylate and cholinium citrate) were validated using FTIR measurements and IR predictions from computational chemistry.

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      journal article Portugal Restricted access

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9907. Select result number 9907
      9907
      

      Citizenship and higher education in Portugal: the impact of the Bologna process

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      book Portugal Restricted access

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9908. Select result number 9908
      9908
      

      Simulação como meio de obtenção de critérios para dimensionamento de sistemas de transporte e armazenamento em lavra a céu aberto

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      book Portugal Open access

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9909. Select result number 9909
      9909
      

      Neurophysiological correlates of near-miss in pathological and problematic gambling

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      conference object Portugal Open access

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9910. Select result number 9910
      9910
      

      Adapting to uncertainty: a mixed-method study on the effects of the COVID-19 pandemic on expectant and postpartum women and men

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      journal article Portugal Open access

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9911. Select result number 9911
      9911
      

      Material de apoio à unidade curricular de Economia de Serviços

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      other Portugal Restricted access

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9912. Select result number 9912
      9912
      

      Luís Filipe Castro Mendes (1950- )

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      other Portugal Open access

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9913. Select result number 9913
      9913
      

      Aprendizagem baseada em Problema - webinar SPEE

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      other Portugal Open access

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9914. Select result number 9914
      9914
      

      A paracentese e as injecções iodadas na ascite

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      bachelor thesis Portugal Open access

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9915. Select result number 9915
      9915
      

      A importância da prática de actividades físicas de forma aleatória (brincar) para o desenvolvimento das capacidades coordenativas

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      other Portugal Open access

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9916. Select result number 9916
      9916
      

      Rising of a single Taylor drop in a stagnant liquid-2D laminar flow and axisymmetry limits

      Publication

      A numerical (computational fluid dynamics (CFD)) study concerning the rise of individual liquid Taylor drops through vertical columns of stagnant heavier liquids is presented in this paper. CFD simulations were performed in Ansys Fluent, using its implementation of volume of fluid method, assuming the flow to be axisymmetric and laminar. Different physical conditions were tested, corresponding to different combinations of relevant dimensionless parameters and the numerical method was validated through experimental data available in the literature. The viscosity ratio between the lighter and the heavier liquid was within the range 0.01-40 and Eotvos number was between 8 and 30. Morton number was within the interval of 2.32 x 10(-6)-100. Froude number results were compared to data from a literature correlation. The accordance is acceptable for the ranges studied. Velocity profiles in significant regions are reported (drop nose, drop bottom and continuous phase liquid film). The influence of changing one dimensionless parameter alone was assessed. For small and large viscosity ratios, axisymmetric behavior is not a valid assumption.

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      journal article Portugal Restricted access

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9917. Select result number 9917
      9917
      

      Ser professor da geração Alpha - os desafios da profissionalização para a docência e a promoção de competências em História e Geografia

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      book Portugal Restricted access

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9918. Select result number 9918
      9918
      

      Does corruption boost or harm firms' performance in developing and emerging economies? A firm‐level study

      Publication

      In the last decade, a growing number of studies have addressed the ongoing debate about whether corruption sands or greases the wheels of business at the firm level. This study revisits this debate and proposes a comprehensive theoretical framework to test whether corruption harms or boosts firm performance, as well as the extent to which this relationship is mediated by the countries institutional settings, the size and strategic behaviour of the firms, and market competition. Based on a sample of 21,250 firms located in 117 emerging and developing countries, and resorting to instrumental variable (IV) estimations, three main results were found: (a) regardless of the proxy used for corruption and firm performance, the former clearly harms the latter; (b) corruption greases the wheels of business for African firms but it sands the wheels for firms in Latin America, the Caribbean, Eastern Europe, Central Asia, and Southern Asia; and (c) the negative impact of corruption on performance is mitigated for larger and exporting firms. (c) 2020 John Wiley & Sons Ltd

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      journal article Portugal Restricted access

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9919. Select result number 9919
      9919
      

      Weight variation and eating behavior: dietary restraint, intuitive and mindful eating and eating self-efficacy

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      conference object Portugal Restricted access

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9920. Select result number 9920
      9920
      

      O forno cerâmico romano de Louredo (Santa Marta de Penaguião)

      Publication

      journal article Portugal Open access

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