84 research outputs found
Análise Económica - Financeira das 3 Grandes Sociedades Desportivas (Sporting, Benfica e Porto)
O futebol é um desporto, considerado como um fenómeno a nível mundial, porque molda culturas, atrai multidões e quebra barreiras culturais e sociais. Contudo, nos últimos anos, aumentou a importância a nível económico e, por isso, a Union of European Football Associations (UEFA) foi forçada a implementar mudanças desportivas, em geral, com exigências ao nível do Fair Play Financeiro (FFP), em particular, tendo como foco os aspetos económicos e financeiros.
Face ao referido justifica-se que o projeto aplicado tenha como objetivo a análise económica e financeira das três Sociedades Anónimas Desportivas que detêm em Portugal mais títulos desportivos, isto é: Sporting Clube de Portugal – Futebol, SAD, Sport Lisboa e Benfica – Futebol SAD e o Futebol Clube do Porto – Futebol, SAD Metodologicamente, a primeira parte do projeto aplicado centrou-se numa revisão da literatura sobre o futebol e as Sociedades Anónimas Desportiva (SAD), bem como a análise de leis e normas que regem estas sociedades e, ainda, a prestação de contas das mesmas. Na segunda parte do projeto aplicado desenvolve-se uma análise empírica que permitiu realizar uma avaliação individual longitudinal com uma comparação das três SAD, justificadas num período de estudo de oito épocas desportivas que compreende a época de 2007/2008 a 2014/2015.
Os resultados do projeto aplicado permitiram concluir que cada Sociedade Anónima Desportiva representa e interpreta a sua própria prestação de contas, de uma maneira relevante e face aos resultados desportivos alcançados. Assim, com base na classificação desportiva dos clubes na UEFA, foi elaborado um indicador para comparar os resultados desportivos e económicos e o modo como uns podem influenciar os outros. Paralelamente, foram realizadas análises económicas e financeiras das três sociedades obtendo assim uma perspetiva da posição financeira e da sua performance no período em estudo de cada uma das SAD, de modo a identificar o equilíbrio e a sua sustentabilidade
Al-containing MCM-41 type materials prepared by different synthesis methods: hydrothermal stability and catalytic properties
Al-containing MCM-41 type materials were prepared by three different synthesis methods
(aluminum grafting on the calcined MCM-41, pH adjustment during the crystallization period
and crystallization in the presence of zeolite seeds). The samples were characterized by
powder XRD, nitrogen adsorption, 27Al MAS NMR and FTIR with pyridine as probe
molecule. All the samples exhibit a high hydrothermal stability at high temperature just with a
minor structural degradation. N2 adsorption data obtained for the sample prepared from a gel
containing zeolite seeds suggest a higher structural resistance to the hydrothermal treatment in
comparison with the samples prepared by other methods. A different type of pyridine
adsorbed, probably interacting simultaneously with a Brönsted and a Lewis acid site, is
observed upon pyridine adsorption. This type of adsorption is stronger for the sample
prepared in the presence of zeolite seeds and is not observed on Al-grafted MCM-41.
2
The catalytic activity towards the isomerization of α-pinene depends mainly on the number of
Brönsted acid sites. The data obtained in this study strongly indicate that for this type of
materials, the Lewis acid sites do not influence the selectivity for the isomerization products
Influence of Drying Treatment on Physical Properties of Pumpkin
The aim of this work was to evaluate the properties of pumpkin (Cucurbita maxima L.) exposed to convective air drying and freeze-drying. The samples were analyzed in terms of physical properties (colour and texture). The trials in the convective chamber were done at 40 ºC and 60 ºC, in the drying tunnel at 60 ºC and in the freeze dryer at -50 ºC. It was concluded that the freeze drying and the air drying at 40 ºC produced smaller changes in the colour while the drying in the tunnel originated more intense colour changes. With respect to texture, it was possible to deduce that the pulp in the fresh product at 2 cm off from the skin is harder than the pulp at 4 cm off from the skin. As to the effect of drying in the texture of the pumpkin, it was observed that all dryings affected texture considerably when compared to the fresh product. In fact, hardness
varied from 75 % in the drying in chamber at 40 ºC to 90 % in the tunnel drying, when compared to the fresh product. As to springiness, it was changed more in the drying at 40 ºC, while cohesiveness showed the higher change in the freeze drying treatment
Detecting parametric resonance in a floating oscillating water column device for wave energy conversion: Numerical simulations and validation with physical model tests
The wave energy sector has faced enormous technological improvements over the last five decades, however, due to the complexity of the hydrodynamic processes, current numerical models still have limitations in predicting relevant phenomena. In particular, floating spar-type wave energy converters are prone to large undesirable roll and pitch amplitudes caused by a dynamic instability induced by parametric resonance. Detecting this phenomenon accurately is essential as it impacts drastically on power extraction, structural loads and mooring forces. This paper presents the validation of results from a numerical model, capable of detecting parametric resonance, using experimental data. Experiments were carried out for a scaled model of the Spar-buoy OWC (Oscillating Water Column) device at a large ocean basin. The buoy uses a slack-mooring system attached to the basin floor. The scaled turbine damping effect is simulated by a calibrated orifice plate. Two different buoy draft configurations are considered to analyse the effect of different mass distributions. The numerical model considers the nonlinear Froude-Krylov forces, which allows it to capture complex hydrodynamic phenomena associated with the six-degree-of-freedom motion of the buoy. The mooring system is simulated through a quasi-static inelastic line model. Real fluid effects are accounted for through drag forces based on the Morison’s equation and determined from experimental data. The comparison of results from regular-wave tests shows good agreement, including when parametric resonance is detected. Numerical results show that parametric resonance can produce a negative impact on power extraction efficiency up to 53%
The Egas Moniz histology digital platform : a dream that came true
Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Moniz’ University Campus in Monte de Caparica, Almada, from 3–5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio
Alien plant species: environmental risks in agricultural and agro-forest landscapes under climate change
Alien plant species have been essential for farming and agro-forestry
systems and for their supply of food, fiber, tannins, resins or wood from antiquity to
the present. They also contributed to supporting functions and regulating services
(water, soil, biodiversity) and to the design of landscapes with high cultural and
scenic value. Some of those species were intentionally introduced, others arrived
accidentally, and a small proportion escaped, naturalized and became invasive in
natural ecosystems—these are known as invasive alien species (IAS). Here, invasive
means that these species have some significant negative impact, either by
spreading from human-controlled environments (e.g. fields, gardens) to natural
ecosystems, where they can cause problems to native species, or to other production
systems or urban areas, impacting on agricultural, forestry activities or human health. Socio-environmental impacts associated with plant invasions have been
increasingly recognized worldwide and are expected to increase considerably under
changing climate or land use. Early detection tools are key to anticipate IAS and to
prevent and control their impacts. In this chapter, we focus on crop and non-crop
alien plant species for which there is evidence or prediction of invasive behaviour
and impacts. We provide insights on their history, patterns, risks, early detection,
forecasting and management under climate change. Specifically, we start by providing
a general overview on the history of alien plant species in agricultural and
agroforestry systems worldwide. Then, we assess patterns, risks and
impacts resulting from alien plants originally cultivated and that became invasive
outside cultivation areas. Afterwards, we provide several considerations
for managing the spread of invasive plant species in the landscape. Finally,
we discuss challenges of alien plant invasions for agricultural and agroforest systems,
in the light of climate change.Joana R. Vicente was supported by POPH/FSE and FCT (Post-Doc grant
SFRH/BPD/84044/2012). Ana Sofia Vaz was supported by FSE/MEC and FCT (Ph.D. grant PD/
BD/52600/2014). Ana Isabel Queiroz supported by FCT—the Portuguese Foundation for Science
and Technology [UID/HIS/04209/2013 and IF/00222/2013/CP1166/CT0001]. This work received
financial support from the European Union (FEDER funds POCI-01-0145-FEDER-006821) and
National Funds (FCT/MEC, Fundação para a Ciência e Tecnologia and Ministério da Educação e
Ciência) under the Partnership Agreement PT2020 UID/BIA/50027/201
Setting performance indicators for coastal marine protected areas: An expert-based methodology
Marine Protected Areas (MPAs) require effective indicators to assess their performance, in
compliance with the goals of relevant national and international commitments. Achieving
and prioritizing shortlists of multidisciplinary indicators demands a significant effort from
specialists to depict the multiple conservation and socioeconomic interests, and the large
complexity of natural systems. The present paper describes a structured expert-based
methodology (process and outputs) to co-define a list of multidisciplinary MPA
performance indicators. This work was promoted by the management authority of
coastal MPAs in mainland Portugal to gather a consensual and feasible list of indicators
that would guide the design of a future national monitoring program. Hence, Portuguese
coastal MPAs served as a case study to develop such a process between 2019 and 2020.
In the end, participants (1) agreed on a shortlist of prioritized indicators (i.e., environmental,
governance, and socioeconomic indicators) and (2) defined minimum monitoring
frequencies for the indicators in this list, compatible with the potential replicability of the
associated survey methods. The present approach recommends that management plans
incorporate monitoring procedures and survey methods, with a validated list of indicators
and associated monitoring periodicity, agreed among researchers, MPA managers and
governance experts. The proposed methodology, and the lessons learned from it, can
support future processes aiming to define and prioritize MPA performance indicatorsFundação para a Ciência e Tecnologia - FCT, European Maritime and
Fisheries Fund (EMFF)info:eu-repo/semantics/publishedVersio
Development of technologies to support the diagnosis of infectious diseases and cancer to support the primary health care
54/2017).
Publisher Copyright:
© 2022, The Author(s).Purpose: Primary Health Care (PHC) is the coordinator of health care in Brazil and needs to be strengthened in the diagnostic field to increase health care quality. Aiming to improve the diagnostic tools currently available in PHC, this work describes the process of development and validation of two point-of-care biomedical devices for screening patients with syphilis or different kinds of cancer. Methods: The development of these devices followed nine stages of action based on the requirements established by the Ministry of Health. During development, both systems followed the stages of circuit planning, software simulation to verify the components used, cost assessment for the acquisition of features, simulation in contact matrix, development of the embedded system, and planning of the printed circuit board and storage box. Results: Both devices underwent preliminary functionality tests to assess their quality. The performance tests applied on the device to diagnose syphilis performed 8,733,194 requests, with a flow of 2426 requests/second, reaching the desired parameters of robustness, integrity, durability, and stability. In addition, functioning tests on the cancer-screening device indicated the ability to detect standard fluorescence in a minimal (150 uL) sample volume. Conclusions: Together, the methodology used for developing the devices resulted in promising equipment to improve the diagnosis and meet the requirements for executing technologies for testing and triaging patients in PHC.publishersversionpublishe
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