Renovacion docente en una asignatura teorico-practica: de la clase magistral hacia el aprendizaje basado en problemas y proyectos

En este trabajo se presenta la metodología enseñanza-aprendizaje y el sistema de evaluación que se están empleando en la asignatura Ingeniería y Morfología del Terreno, que ha evolucionado desde la clase magistral tradicional y el examen final único hacia un formato más participativo e interactivo y con un sistema de evaluación continuado. Se analizan los resultados académicos obtenidos y la opinión del alumnado, y se observa cómo ha habido una aceptación mayoritaria de este sistema y también una satisfacción generalizada, tanto por los conocimientos adquiridos como por las competencias trabajadas. Además, se incide en que esta transformación entronca con el proceso de convergencia europeo en la enseñanza superior en los objetivos de aprendizaje a lograr con el alumno. Por último, se estima el número de créditos europeos ECTS de esta asignatura.Eje: Educación universitaria: Experiencias educativasRed de Universidades con Carreras en Informática (RedUNCI

Renovacion docente en una asignatura teorico-practica: de la clase magistral hacia el aprendizaje basado en problemas y proyectos

En este trabajo se presenta la metodología enseñanza-aprendizaje y el sistema de evaluación que se están empleando en la asignatura Ingeniería y Morfología del Terreno, que ha evolucionado desde la clase magistral tradicional y el examen final único hacia un formato más participativo e interactivo y con un sistema de evaluación continuado. Se analizan los resultados académicos obtenidos y la opinión del alumnado, y se observa cómo ha habido una aceptación mayoritaria de este sistema y también una satisfacción generalizada, tanto por los conocimientos adquiridos como por las competencias trabajadas. Además, se incide en que esta transformación entronca con el proceso de convergencia europeo en la enseñanza superior en los objetivos de aprendizaje a lograr con el alumno. Por último, se estima el número de créditos europeos ECTS de esta asignatura.Eje: Educación universitaria: Experiencias educativasRed de Universidades con Carreras en Informática (RedUNCI

Newton e a decomposição da luz solar em um prisma: o que trazem os livros de ensino médio?

Partindo-se de algumas exigências constantes dos documentos oficiais do Ministério da Educação brasileiro e do conhecimento científico atualmente aceito, pretendeu-se identificar e analisar quais associações fazem os autores de livros didáticos de física, entre o saber sábio, com base nos trabalhos de Isaac Newton (1642-1726) de 1672 e 1704, além de outros sobre óptica, e o saber a ensinar. Desenvolveu-se uma pesquisa documental, tendo como marco teórico os pressupostos do estudo sistemático da Transposição Didática, proposto inicialmente por M. Verret (1975) no seio da Sociologia e rediscutido, no âmbito da Educação Matemática, por Y. Chevalard (1991, 2005). A análise dos livros foi norteada com base na metodologia já testada, validada e utilizada em outros trabalhos (CALDAS, 1994; CALDAS; SALTIEL, 1999; CUNHA; CALDAS, 2000). Identificaram-se as contribuições presentes em alguns desses livros à física escolar, para explicar a decomposição da luz e sinalizaram-se alguns aspectos teórico-conceituais, considerados essenciais a uma melhor compreensão de conceitos que permeiam o assunto. Verificou-se que há, do ponto de vista conceitual, certo distanciamento entre a forma escolhida pelos autores dos livros analisados (saber a ensinar), para apresentarem aspectos da decomposição da luz em um prisma, e o que parece ter sido proposto Newton (1672, 1704) à Teoria da Luz e Cor (saber sábio), relativamente à concepção científica atualmente aceita

Solid-state fermented brewer's spent grain enzymatic extract increases in vitro and in vivo feed digestibility in European seabass

Brewers spent grain (BSG) is the largest by-product originated from the brewery industry with a high potential for producing carbohydrases by solid-state fermentation. This work aimed to test the efficacy of a carbohydrases-rich extract produced from solid-state fermentation of BSG, to enhance the digestibility of a plant-based diet for European seabass (Dicentrarchus labrax). First, BSG was fermented with A. ibericus to obtain an aqueous lyophilized extract (SSF-BSG extract) and incorporated in a plant-based diet at increasing levels (0control; 0.1%, 0.2%, and 0.4%). Another diet incorporating a commercial carbohydrases-complex (0.04%; Natugrain; BASF) was formulated. Then, all diets were tested in in vitro and in vivo digestibility assays. In vitro assays, simulating stomach and intestine digestion in European seabass, assessed dietary phosphorus, phytate phosphorus, carbohydrates, and protein hydrolysis, as well as interactive effects between fish enzymes and dietary SSF-BSG extract. After, an in vivo assay was carried out with European seabass juveniles fed selected diets (0control; 0.1%, and 0.4%). In vitro digestibility assays showed that pentoses release increased 45% with 0.4% SSF-BSG extract and 25% with Natugrain supplemented diets, while amino acids release was not affected. A negative interaction between endogenous fish enzymes and SSF-BSG extract was observed in both diets. The in vivo digestibility assay corroborated in vitro data. Accordingly, the dietary supplementation with 0.4% SSF-BSG increased the digestibility of dry matter, starch, cellulose, glucans, and energy and did not affect protein digestibility. The present work showed the high potential of BSG to produce an added-value functional supplement with high carbohydrases activity and its potential contribution to the circular economy by improving the nutritional value of low-cost and sustainable ingredients that can be included in aquafeeds. © 2021, The Author(s).Te authors thank UNICER, a sof-drink company (Porto, Portugal), for providing the brewer’s spent grain used in this study. Tis study was supported by the project “SPO3-Development of innovative sustainable protein and omega-3 rich feedstufs for aquafeeds, from local agro-industrial by-products”, reference POCI-01- 0145-FEDER-030377, funded by European Regional Development Fund (ERDF) and Portuguese Foundation for Science and Technology (FCT) and by strategic funding of UIDB/04423/2020 by UIDB/04469/2020 unit, the BioTecNorte operation (NORTE-01-0145-FEDER-000004) through national funds provided by FCT, and under the scope of the strategic funding of UIDB/04469/2020 unit. Te H.F. and C.C were supported by grants SFRH/BD/131219/2017 and SFRH/BPD/114942/2016, respectively, from FCT, MCTES, FSE, and UE under the North Portugal Regional Operational Programme (NORTE2020). José Manuel Salgado was supported by Beatriz Galindo contract of Ministry of Education (Spain).info:eu-repo/semantics/publishedVersio

Improvement of boring operations by means of mode coupling effect

Boring bars are inherently slender tools which are prone to show chatter problems due to their low dynamic stiffness and damping, being this problem their main limitation in productivity. The onset of chatter is mainly related to the dynamic stiffness of the bending mode of the boring bar when the length L to dia-meter D ratio is higher than 4. Tuned mass dampers (TMD) are effective technical solutions to increase the dynamic stiffness of large ratio boring bars. However, there are many applications where 4-6 L/D ratio tools are required, and the avoidance of chatter without the application of TMDs is interesting due to the high cost of damped tools. This work proposes the use of mode coupling effect to increase the damping and stabilise the machining process avoiding the use of any special device. This effect occurs when the fre-quency of one of the machine's modes is similar to the frequency of the dominant mode of the boring bar. As a result, the shape of the critical mode of the boring bar is mixed with the mode originated in the machine, and the damping and stability will be higher than the one that is not subjected to any dynamic coupling. The main contribution of this work is the application of this concept to increase stability in boring operations. This objective has been achieved by optimising the tool length and material by means of a dynamic model based on Receptance Coupling Substructure Analysis (RCSA). The model combines an analytical model of the elastic body of the boring bar with the experimental characterisation of the effect of the rest of the machine. This way, the shape and materials of the boring bar can be optimised to create an increase of damping. The optimisation procedure has been experimentally validated resulting in an increase of cutting stability and demonstrating that not always a shorter bar supposes a higher stability.The authors thank the collaboration of Markel Sanz from IDEKO. This work has been supported by EUROSTARS FORTH E!12998 pro-ject and the EU Horizon 2020 InterQ project (958357/H2020-EU.2.1.5.1)

A Consistent Procedure Using Response Surface Methodology to Identify Stiffness Properties of Connections in Machine Tools

Accurate finite element models of mechanical systems are fundamental resources to perform structural analyses at the design stage. However, uncertainties in material properties, boundary conditions, or connections give rise to discrepancies between the real and predicted dynamic characteristics. Therefore, it is necessary to improve these models in order to achieve a better fit. This paper presents a systematic three-step procedure to update the finite element (FE) models of machine tools with numerous uncertainties in connections, which integrates statistical, numerical, and experimental techniques. The first step is the gradual application of fractional factorial designs, followed by an analysis of the variance to determine the significant variables that affect each dynamic response. Then, quadratic response surface meta-models, including only significant terms, which relate the design parameters to the modal responses are obtained. Finally, the values of the updated design variables are identified using the previous regression equations and experimental modal data. This work demonstrates that the integrated procedure gives rise to FE models whose dynamic responses closely agree with the experimental measurements, despite the large number of uncertainties, and at an acceptable computational cost.This work has been supported by the University of the Basque Country UPV/EHU under programs PPGA17/04 and US17/16, and the Spanish Ministry of Economy, Industry, and Competitiveness under program DPI2016-74845-R

Doenças neurodegenerativas no Distrito de Bragança: diagnósticos ativos de demência, parkinsonismo e esclerose múltipla

O projeto Neuroqualyfam: Doenças Neurodegenerativas e Qualidade de Vida Familiar, tem como objetivo reforçar a cooperação entre as instituições de investigação ao nível do estudo das doenças neurodegenerativas, para melhorar a qualidade de vida familiar e otimizar os recursos de apoio e assistência às famílias cuidadoras, no âmbito geográfico da zona transfronteiriça de Castela e Leão, o Centro e o Norte de Portugal. O documento reflete a informação referente à Atividade 1 do projeto – Mapeamento das necessidades das famílias cuidadoras na zona transfronteiriça, Ação 1 – Análise da situação no Distrito de Bragança, que ficou sob a responsabilidade do Instituto Politécnico de Bragança. A finalidade consiste em identificar e caraterizar a população do Distrito de Bragança com doenças neurodegenerativas, no que diz respeito aos aspetos sociodemográficos, geográficos e políticos, caraterização da população com doenças neurodegenerativas e mapeamento da população com doenças desta tipologia no distrito de Bragança. Para a elaboração do presente estudo foi estabelecido contacto com a Unidade Local de Saúde do Nordeste – EPE (ULSNE), e formalizado o pedido de informação relativa às pessoas que padeçam de uma das doenças consideradas, dados que serviram de suporte à elaboração do estudo epidemiológico da população com diagnóstico ativo de Demência, Doença de Parkinson e Esclerose Múltipla.Do total de doenças neurodegenerativas (n=2332), 1,87% da população da área de abrangência da Unidade Local de Saúde do Nordeste, a maioria corresponde a diagnósticos ativos de Demência (n=1595). A doença de Parkinson surge em segundo lugar (n=659) e a Esclerose Múltipla (n=78) com menor número os diagnósticos ativos. Em termos de distribuição são os municípios com maior número de habitantes, Bragança, Mirandela e Macedo de Cavaleiros, que apresentam mais diagnósticos ativos das três doenças em análise. Realça-se, no entanto, o facto de se verificarem dois municípios com menor população (Miranda do Douro e Freixo de Espada à Cinta) com elevado número de demências. Em todos os municípios a prevalência é maior no sexo feminino e nos grupos etário de maior idade com exceção da Esclerose Múltipla em que a prevalência é maior na idade ativa. Nesta doença, observa-se maior número de diagnósticos ativos no sexo masculino e no grupo etário compreendido ente 30-39 e 50-54 anos de idade. A distribuição por sexo inverte-se entre os 40-59 e 65-69 anos de idade

Ludificación de la Historia de Veterinaria

En este proyecto se han realizado ocho interpretaciones histórico-teatrales de personajes relevantes en la historia de la veterinaria, realizada por los propios alumnos matriculados y profesores, para facilitar el conocimiento de aspectos personales, profesionales y sociales de la Veterinaria en distintas épocas

TRAF1/C5 but Not PTPRC Variants Are Potential Predictors of Rheumatoid Arthritis Response to Anti-Tumor Necrosis Factor Therapy

Background. The aim of our work was to replicate, in a Southern European population, the association reported in Northern populations between PTPRC locus and response to anti-tumor necrosis factor (anti-TNF) treatment in rheumatoid arthritis (RA). We also looked at associations between five RA risk alleles and treatment response. Methods. We evaluated associations between anti-TNF treatment responses assessed by DAS28 change and by EULAR response at six months in 383 Portuguese patients. Univariate and multivariate linear and logistic regression analyses were performed. In a second step to confirm our findings, we pooled our population with 265 Spanish patients. Results. No association was found between PTPRC rs10919563 allele and anti-TNF treatment response, neither in Portuguese modeling for several clinical variables nor in the overall population combining Portuguese and Spanish patients. The minor allele for RA susceptibility, rs3761847 SNP in TRAF1/C5 region, was associated with a poor response in linear and logistic univariate and multivariate regression analyses. No association was observed with the other allellic variants. Results were confirmed in the pooled analysis. Conclusion. This study did not replicate the association between PTPRC and the response to anti-TNF treatment in our Southern European population. We found that TRAF1/C5 risk RA variants potentially influence anti-TNF treatment response.This work was supported by a grant from Harvard-Portugal Program HMSP-ICS/SAU-ICT/0002/2010. Daniel H. Solomon received support for this work from the NIH (K24-AR-055989). Elizabeth W. Karlson received support for this work from NIH (K24-AR-AR0524). Reuma.pt received unrestricted grants from Abbott, Bristol-Myers Squibb, Merck Sharp and Dohme, Pfizer, Roche, and UCB Pharma