Colecções egípcias em Lisboa

Cadernos de SociomuseologiaVem já de muito longa data o gosto e a prática de coleccionar antiguidades egípcias, acção que conheceu notório desenvolvimento após a expedição conduzida pelo general Bonaparte no Egipto, em finais do século XVIII. Depois, durante todo o século XIX, foi a corrida aos vestígios do passado faraónico, em que os actos de rapina e saque de muitos aventureiros ombrearam com o trabalho meritório e metódico dos diversos egiptólogos que, após as descobertas filológicas de Champollion, as descrições impulsionadoras de Lepsius e as actividades incansáveis de Mariette, passaram muitos anos das suas vidas no país do Nilo e estabeleceram em bases firmes a ciência egiptológica

COLECÇÕES EGÍPCIAS EM LISBOA

Vem já de muito longa data o gosto e a prática de coleccionar antiguidades egípcias, acção que conheceu notório desenvolvimento após a expedição conduzida pelo general Bonaparte no Egipto, em finais do século XVIII. Depois, durante todo o século XIX, foi a corrida aos vestígios do passado faraónico, em que os actos de rapina e saque de muitos aventureiros ombrearam com o trabalho meritório e metódico dos diversos egiptólogos que, após as descobertas filológicas de Champollion, as descrições impulsionadoras de Lepsius e as actividades incansáveis de Mariette, passaram muitos anos das suas vidas no país do Nilo e estabeleceram em bases firmes a ciência egiptológica

Egyptian objects in the reserve collections of the Calouste Gulbenkian Museum

O Museu Calouste Gulbenkian, em Lisboa, possui uma bela colecção egípcia que é bem conhecida nos meios egiptológicos, estando expostas quarenta peças. No entanto, fazem parte do acervo reunido por Calouste Gulbenkian mais catorze peças que estão nas reservas do Museu, sendo algumas de origem duvidosa. No novo catálogo da colecção que está a ser elaborado prevê-se a publicação dos objectos das reservas, que até agora se têm mantido inéditos. Antecipando a publicação, que terá um carácter mais detalhado, aqui se apresentam sumariamente os referidos objectos.The Calouste Gulbenkian Museum, in Lisbon, has a fine Egyptian collection which is well known in the Egyptological field. Fourty pieces are exhibited in a refurbished room. However, within the collection gathered by Calouste Gulbenkian, there are another fourteen items, presently in the museum’s store, some of which are of doubtful origin. The new catalogue of the collection, currently in preparation [September 2006], will detail these previously unpublished objects. Anticipating this publication, a brief description is given here of a bowl, five panels from a casket, a bronze lion, a scarab, two funerary statuettes, two bronze statuettes and two limestone statues of officials

Soluções de controlo para redes HVDC multi-terminal

Tese de mestrado integrado. Engenharia Electrotécnica e de Computadores (Energia). Faculdade de Engenharia. Universidade do Porto. 201

Desenvolvimento de sistema de apoio dinâmico da chapa no corte em guilhotina

Guilhotinas são máquinas robustas, de corte rectilíneo, normalmente associadas a equipamentos de baixo custo, devido à pequena quantidade de dispositivos tecnológicos incorporados. No entanto, esta situação pode ser alterada através da criatividade dos projetistas deste tipo de equipamento. Analisando algumas operações específicas, pode-se observar que algumas ferramentas, quando associadas ao equipamento, podem aumentar substancialmente a produtividade do processo de corte e a qualidade do produto final. Em relação ao processo de corte de chapas finas de metal, pode-se observar que na fase final de corte, o peso do material a cortar é suspenso por uma pequena porção de material que ainda não foi sujeita ao corte. Este facto leva a uma deformação plástica nesta última zona, causando problemas de qualidade no produto final, que não ficará completamente plano. Este trabalho foi desenvolvido em torno deste problema, estudando a melhor solução para desenvolver uma nova ferramenta, capaz de evitar a falta de nivelamento da placa, após corte. Um novo equipamento foi concebido, capaz de ser facilmente incorporado na guilhotina, permitindo o acompanhamento da inclinação da lâmina durante a operação de corte. O sistema é totalmente automatizado, sendo operado por uma única instrução de corte dada pelo operador da máquina. Este sistema permite à empresa fabricante aumentar o valor agregado de cada máquina, oferecendo aos clientes soluções avançadas, contribuindo desta forma para a sustentabilidade do negócio da empresa.Metal shear machines are heavy cutting machinery usually associated to low cost equipment due to the small amount of incorporated technological devices. However, this situation can be changed through the creativity of the designers of this kind of equipment. Analysing some specific operations it can be observed that some add-ins, when aggregated to the equipment, should substantially increase the cut process productivity and the final product quality. Regarding the shear process of thin metal plates, it can be observed that in the final stage of the cut, the cut material weight is suspended by a small portion of material that is about to cut. This fact leads to the plastic straining of the strip tip, causing lesser quality of the final product, which won't be fully plan. This work was developed around this problem, studying the best solution to develop a new tool able to avoid the lack of flatness of the plate after cut. A new equipment was designed, able to be easily connected to the shear machine and allowing to follow the blade slope during the cut operation. The system is fully-automated, being operated by a single instruction given by the machine operator. This system allows the manufacturing company to increase the added-value of each machine, offering to the customers advanced and desirable solutions, contributing by this way to the business sustainability of the company

Bugiada e mouriscada de Sobrado: a festa como património

A festa de S. João de Sobrado, também designada como Bugiada e Mouriscada, é uma manifestação cultural que se enquadra nas festividades populares cíclicas e nas “festas ou danças de mouros e cristãos”. Realiza-se anualmente no dia 24 de Junho, na vila de Sobrado, concelho de Valongo, no noroeste de Portugal. Trata-se de uma manifestação cultural multidimensional e de grande densidade simbólica e social que se encontra em processo de estudo científico sistemático e exaustivo. Pretende-se, assim, apresentar de forma sucinta os elementos fundamentais desta festividade, e reflectir sobre a sua classificação como património cultural, considerando o seu relevo como marcador identitário da comunidade local.info:eu-repo/semantics/publishedVersio

A practical clinical score

Copyright © 2022 Sociedade Portuguesa de Cardiologia. Publicado por Elsevier España, S.L.U. All rights reserved.INTRODUCTION AND OBJECTIVES: Obstructive coronary artery disease (CAD) remains the most common etiology of heart failure with reduced ejection fraction (HFrEF). However, there is controversy whether invasive coronary angiography (ICA) should be used initially to exclude CAD in patients presenting with new-onset HFrEF of unknown etiology. Our study aimed to develop a clinical score to quantify the risk of obstructive CAD in these patients. METHODS: We performed a cross-sectional observational study of 452 consecutive patients presenting with new-onset HFrEF of unknown etiology undergoing elective ICA in one academic center, between January 2005 and December 2019. Independent predictors for obstructive CAD were identified. A risk score was developed using multivariate logistic regression of designated variables. The accuracy and discriminative power of the predictive model were assessed. RESULTS: A total of 109 patients (24.1%) presented obstructive CAD. Six independent predictors were identified and included in the score: male gender (2 points), diabetes (1 point), dyslipidemia (1 point), smoking (1 point), peripheral arterial disease (1 point), and regional wall motion abnormalities (3 points). Patients with a score ≤3 had less than 15% predicted probability of obstructive CAD. Our score showed good discriminative power (C-statistic 0.872; 95% CI 0.834-0.909: p<0.001) and calibration (p=0.333 from the goodness-of-fit test). CONCLUSIONS: A simple clinical score showed the ability to predict the risk of obstructive CAD in patients presenting with new-onset HFrEF of unknown etiology and may guide the clinician in selecting the most appropriate diagnostic modality for the assessment of obstructive CAD.proofepub_ahead_of_prin

The coronary artery disease equivalent revisited

(1) To study the prevalence and severity of coronary artery disease (CAD) in diabetic patients. (2) To provide a detailed characterization of the coronary atherosclerotic burden, including the localization, degree of stenosis and plaque composition by coronary computed tomography angiography (CCTA). Single center prospective registry including a total of 581 consecutive stable patients (April 2011-March 2012) undergoing CCTA (Dual-source CT) for the evaluation of suspected CAD without previous myocardial infarction or revascularization procedures. Different coronary plaque burden indexes and plaque type and distribution patterns were compared between patients with (n = 85) and without diabetes (n = 496). The prevalence of CAD (any plaque; 74.1 vs. 56 %; p = 0.002) and obstructive CAD (≥50 % stenosis; 31.8 vs. 10.3 %; p<0.001) were significantly higher in diabetic patients. The remaining coronary atherosclerotic burden indexes evaluated (plaque in LM-3v-2v with prox. LAD; SIS; SSS; CT-LeSc) were also significantly higher in diabetic patients. In the per segment analysis, diabetics had a higher percentage of segments with plaque in every vessel (2.6/13.1/7.5/10.5 % for diabetics vs. 1.4/7.1/3.3/4.4 % for nondiabetics for LM, LAD, LCx, RCA respectively; p<0.001 for all) and of both calcified (19.3 vs. 9.2 %, p<0.001) and noncalcified or mixed types (14.4 vs. 7.0 %; p<0.001); the ratio of proximal-to-distal relative plaque distribution (calculated as LM/proximal vs. mid/distal/branches) was lower for diabetics (0.75 vs. 1.04; p = 0.009). Diabetes was an independent predictor of CAD and was also associated with more advanced CAD, evaluated by indexes of coronary atherosclerotic burden. Diabetics had a significantly higher prevalence of plaques in every anatomical subset and for the different plaque composition. In this report, the relative geographic distribution of the plaques within each subgroup, favored a more mid-to-distal localization in the diabetic patients.publishersversionpublishe

Data from Portuguese centers

© 2022 Sociedade Portuguesa de Cardiologia. Published by Elsevier España, S.L.U.INTRODUCTION: During the Covid-19 pandemic there has been a general belief that hospital admissions for non-infectious causes, especially cardiovascular disease, have fallen. OBJECTIVES: To assess the impact of the pandemic on admissions for ST-elevation myocardial infarction (STEMI) during the first pandemic wave. METHODS: We performed a multicenter retrospective analysis of consecutive patients presenting with STEMI in two Portuguese hospital centers in two sequential periods - P1 (March 1 to April 30) and P2 (May 1 to June 30). Patients' clinical data and hospital outcomes were compared between the two periods for the years 2017 to 2019 and for 2020. RESULTS: During P1 in 2020, a reduction in the number of STEMI patients was observed in comparison with previous years (26.0±4.2 vs. 16.5±4.9 cases per month; p=0.033), as well as an increase in the number of mechanical complications (0.0% vs. 3.0%; p=0.029). Percutaneous coronary interventions in the setting of failed thrombolysis were more frequent (1.9% vs. 9.1%; p=0.033). An overall trend for longer delays in key timings of STEMI care bundles was noted. Mortality was higher during P1 compared to previous years (1.9% vs. 12.1%; p=0.005). CONCLUSIONS: During the first Covid-19 wave fewer patients presented with STEMI at the catheterization laboratory for percutaneous coronary intervention. These patients presented more mechanical complications and higher mortality.proofepub_ahead_of_prin

Ten-year survival of patients undergoing coronary angioplasty with first-generation sirolimus-eluting stents and bare-metal stents

Introduction: Compared to bare-metal stents (BMS), drug-eluting stents reduce stent restenosis and improve subsequent revascularization rates. The impact on patients’ survival has been the subject of debate. Objective: To assess the long-term (10-year) survival of patients undergoing percutaneous coronary intervention (PCI) with first-generation sirolimus-eluting stents (SES) in comparison with BMS. Methods: In a single-center registry, 600 consecutive patients who underwent successful PCI with SES between April 2002 and February 2003 were compared to 594 patients who underwent PCI with BMS between January 2002 and April 2002, just before the introduction of SES. Clinical and procedural data were collected at the time of intervention and 10-year survival status was assessed via the national life status database. Results: All baseline characteristics were similar between groups except for smaller stent diameter (2.84±0.38 vs. 3.19±0.49 mm; p<0.001), greater stent length (18.50±8.2 vs. 15.96±6.10 mm; p<0.001) and higher number of stents per patient (1.95 vs. 1.46, p<0.001) in the SES group. Overall five- and 10-year all-cause mortality was 9.6% (n=110) and 22.7% (n=272), respectively. The adjusted HR for 10-year mortality in patients undergoing PCI with SES was 0.74 (95% CI 0.58-0.94; p=0.013), corresponding to a relative risk reduction of 19.8%. Other than PCI with BMS, older age, chronic kidney disease, chronic obstructive pulmonary disease and lower ejection fraction were independent predictors of 10-year mortality. Conclusion: To date, this is the longest follow-up study ever showing a potential survival benefit of first-generation sirolimus-eluting stents versus bare-metal stents, supporting prior observations on their sustained efficacy and safety relative to contemporary BMS.publishersversionpublishe