399 research outputs found
MATERIAL CHARACTERISATION OF A FLORENTINE PAINTER IN PORTUGAL IN THE LATE 19TH CENTURY: PAINTINGS BY GIORGIO MARINI
This paper presents the analytical characterisation of a series of paintings authored by
Giorgio Marini (1836-1905) from the Museum of Évora. Marini was an Italian painter who
lived in Portugal in the 19th century. He was a very prolific painter and his works, most of them
portraits commissioned by urban and rural bourgeois and noble elites, are dispersed all over
the country. The general good conservation state of most paintings prevented the collection of
micro-samples for detailed study. Hence, material identification of the painting materials was
performed primarily by XRF, given its non-destructive and non-invasive nature, and it was
complemented when possible by auxiliary techniques optical microscopy, Raman spectroscopy,
and SEM-EDX. Pigments and fillers such as yellow and red ochre, lead white, zinc white,
barium white, chrome yellow and green chrome are among the identified pigments. This is the
first time the palette used by Giorgio Marini was identified, helping to characterised the
pigments used by foreign painters during the 19th century in Portuga
Assessment of microbiota present on a Portuguese historical stone convent using high-throughput sequencing approaches
The study performed on the stone materials from the Convent of Christ revealed
the presence of a complex microbial ecosystem, emphasizing the determinant role
of microorganisms on the biodecay of this built cultural heritage. In this case study,
the presence of Rubrobacter sp., Arthrobacter sp., Roseomonas sp., and Marinobacter
sp. seems to be responsible for colored stains and biofilm formation while Ulocladium
sp., Cladosporium sp., and Dirina sp. may be related to structural damages. The implementation
of high-throughput sequencing approaches on the Convent of Christ's
biodecay assessment allowed us to explore, compare, and characterize the microbial
communities, overcoming the limitations of culture-dependent techniques, which
only identify the cultivable population. The application of these different tools and
insights gave us a panoramic view of the microbiota thriving on the Convent of Christ
and signalize the main biodeteriogenic agents acting on the biodecay of stone materials.
This finding highlighted the importance of performing metagenomic studies
due to the improvements and the reduced amount of sample DNA needed, promoting
a deeper and more detailed knowledge of the microbiota present on these dynamic
repositories that support microbial life. This will further enable us to perform
prospective studies in quarry and applied stone context, monitoring biogenic and
nonbiogenic agents, and also to define long-term mitigation strategies to prevent
biodegradation/biodeterioration processes
The role of endoplasmic reticulum in amyloid precursor protein processing and trafficking: implications for Alzheimer's disease
The endoplasmic reticulum (ER) is the principal organelle responsible for the proper folding/processing of nascent proteins and perturbed ER function leads to a state known as ER stress. Mammalian cells try to overcome ER stress through a set of protein signaling pathways and transcription factors termed the unfolded protein response (UPR). However, under unresolvable ER stress conditions, the UPR is hyperactivated inducing cell dysfunction and death. The accumulation of misfolded proteins in the brain of Alzheimer's disease (AD) patients suggests that alterations in ER homeostasis might be implicated in the neurodegenerative events that characterize this disorder. This review discusses the involvement of ER stress in the pathogenesis of AD, focusing the processing and trafficking of the AD-related amyloid precursor protein (APP) during disease development. The potential role of ER as a therapeutic target in AD will also be debated
Impacto da criatividade no declínio cognitivo: estudo em mulheres portuguesas
A Criatividade, quer como processo, quer como reflexo da individualidade inerente à condição humana, traduz-se nas diversas vertentes contextuais que caracterizam a história e evolução da humanidade.
Será um talento, um preditor de Inteligência ou uma capacidade aprendida através de exercícios que fomentem aprendizagem? A sua definição parece evidente, no entanto, assume-se como uma questão extremamente controversa (James, Gerard, Bagt-Traore, 2010).
Sabe-se que, através de trabalhos como o de Alves, Simões e Martins (2014) que a avaliação do Declínio Cognitivo passa por um conhecimento prévio das capacidades cognitivas pré-mórbidas. O Declínio Cognitivo pode ser descrito pela perda contínua das capacidades cognitivas e executivas (Giebel, Sutcliffe, & Challis, 2015). A propósito desta abordagem, considera-se útil a utilização de métodos quantitativos como o Mini-Mental State Examination (MMSE). Nesta linha, Starr e colaboradores (1992) reconhecem que a pontuação obtida neste instrumento pode ser mediada pela Inteligência Pré-Mórbida e pela idade do indivíduo (Starr, & Lonie, 2007).
Como fator protetor do Declínio Cognitivo, a Criatividade e a prática de atividades a esta relacionada demonstram poder intensificar aspetos como a eficácia e competência dos adultos idosos (Fisher, & Specht, 1999 citado por Flood, & Phillips, 2007).
O artesanato, como uma prática criativa, não surge de uma tela branca. Recorrem-se a múltiplas componentes que refletem, potencialmente, uma personalidade criativa ou identidade regional e espelham a história, a motivação e a experiência que, conjugados de uma forma holística procuram aprimorar os produtos que, geralmente, se inserem na mesma categoria (Secca Ruivo, 2011).
O presente estudo correlacional visa analisar o impacto da prática de atividades criativas – artesanato – nas capacidades cognitivas e executivas em mulheres idosas. Presume-se, então, que a Criatividade pode estar relacionada com a preservação e integração das capacidades cognitivas dos indivíduos.FCT e três projetos
ENABLIN+ (Leonardo Da Vinci), Cognition & Inclusion (ERASMUS+) e LLL-HUB (Lifelong
Learning Programm) e da I Conferência Europeia em Life Long Learning (realizada na
Universidade de Évora com os apoios do Departamento de Psicologia e da Escola de
Ciências Sociais), e da Associação Portuguesa de Gestão de Pessoas (APG) e a
Associação Nacional para a Qualificação e Ensino Profissiona
Análise das classes de relevo e uso das terras no município de Petrolândia-PE, utilizando técnicas de geoprocessamento.
Este trabalho mostra uma análise das classes de relevo e uso das terras no município de Petrolândia-PE. Para isto utilizou-se técnicas de Geoprocessamento e dados das imagens SRTM e TM/Landsat5. O uso destas imagens possibilitou o conhecimento prévio das classes de relevo, do uso das terras e da geração de mapas, auxiliando o uso, manejo e conservação das terras
Diferencias intra e inter individuales en inteligencia social de estudiantes portugueses
Social intelligence is a favorable condition for career decision-making and development. The social intelligence indices
of Portuguese students in school years prior to a career transition are characterized and intra and interindividual differences are
analyzed. Participants were 1095 students (552, 50.4% women) with a mean age of 14.78 years (SD = 1.86), in the 8th (542,
49.5%), 10th (295, 26.9%) and 11th (258, 23.6%) grades. The Cognitive Test of Social Intelligence (PCIS) was administered at
two moments, six months apart. Results indicate that the 8th grade obtained higher average scores in Problem Solving, Motivation
and Self-confidence (time 1), while the 10th grade obtained better results in Problem Solving, Motivation and Familiarity (time 2).
Between the assessment moments, all school years register an increase in Problem Solving and Self-confidence in social situations.
These results constitute favorable psychological conditions for the promotion of ethical questioning in career guidance interventions.A inteligência social constitui uma condição favorável à tomada de decisão e ao desenvolvimento vocacional.
Este trabalho visa caracterizar os níveis de inteligência social, e analisar as diferenças intra e interindividuais, em alunos
portugueses em anos de pré-transição vocacional. Participaram 1095 alunos (552, 50% mulheres), com uma média de idades
de 14,78 anos (DP = 1,86), do 8º, 10º, e 11º níveis escolares. Administrou-se a Prova Cognitiva de Inteligência Social (PCIS),
em dois momentos (T1 e T2), com seis meses de intervalo. Os resultados indicam que o 8º ano obteve resultados médios
superiores, nos índices de Resolução de Problemas, Motivação e Autoconfiança (T1), enquanto o 10º ano obteve resultados
superiores, em Resolução de Problemas, Motivação e Familiaridade (T2). Entre momentos de avaliação, registra-se, para
todos os níveis escolares, um aumento em Resolução de Problemas e Autoconfiança em situações sociais. Estes resultados
constituem condições psicológicas favoráveis à promoção do questionamento ético nas intervenções de orientação vocacional.La inteligencia social es una condición favorable para la toma de decisiones y el desarrollo de la carrera. Se
caracterizan los niveles de inteligencia social y sus diferencias intra e interindividuales en estudiantes portugueses en transición
pre-profesional. Participaron 1095 estudiantes (552, 50.4% mujeres) con una edad media de 14.78 (DE = 1.86), del 8º (542,
49,5%), 10º (295, 26.9%) y 11º (258, 23.6%) años escolares. Se administró la Prueba Cognitiva de Inteligencia Social (PCIS) en
dos ocasiones, con seis meses de diferencia. Los resultados indican que los estudiantes del 8º grado obtuvieron puntajes medios
más altos en la Resolución de Problemas, Motivación y Confianza (T1), mientras que los del 10º grado obtuvieron mejores
resultados en la Resolución de Problemas, Motivación y Familiaridad (T2). Entre momentos de evaluación se registra, para
todos los años, un aumento en la Resolución de Problemas y Confianza en situaciones sociales. Estos resultados constituyen
condiciones psicológicas favorables a la promoción del cuestionamiento ético en las intervenciones de orientación profesional.Project coordinated by the fourth author and co-funded by the
Foundation for Science and Technology and the Compete Program -
PTDC/CPE-CED/098896/200
The KnowRISK project: Tools and strategies to reduce non-structural damage
The project KnowRISK (Know your city, Reduce seISmic risK through non-structural elements) is financed by
the European Commission to develop prevention measures that may reduce non-structural damage in urban areas.
Pilot areas of the project are within the three European participating countries, namely Portugal, Iceland and Italy.
Non-structural components of a building include all those components that are not part of the structural system,
more specifically the architectural, mechanical, electrical, and plumbing systems, as well as furniture, fixtures,
equipment, and contents. Windows, partitions, granite veneer, piping, ceilings, air conditioning ducts and equipment,
elevators, computer and hospital equipment, file cabinets, and retail merchandise are all examples of nonstructural
components that are vulnerable to earthquake damage. We will use the experience gained during past
earthquakes, which struck in particular Iceland, Italy and Portugal (Azores). Securing the non-structural elements
improves the safety during an earthquake and saves lives. This paper aims at identifying non-structural seismic protection
measures in the pilot areas and to develop a portfolio of good practices for the most common and serious
non-structural vulnerabilities. This systematic identification and the portfolio will be achieved through a “crossknowledge”
strategy based on previous researches, evidence of non-structural damage in past earthquakes. Shake
table tests of a group of non-structural elements will be performed. These tests will be filmed and, jointly with
portfolio, will serve as didactic supporting tools to be used in workshops with building construction stakeholders
and in risk communication activities. A Practical Guide for non-structural risk reduction will be specifically prepared
for citizens on the basis of the outputs of the project, taking into account the local culture and needs of each
participating countryPublishedVienna3T. Pericolosità sismica e contributo alla definizione del rischiorestricte
Evidenciação do antígeno da hepatite B (HBsAg) em Triatominae
A total of 3,200 impressions were fixed on filter paper and were identified as containing human blood obtained from blood-sucking arthropods of the Triatoma and Panstrongylus genre. The impressions were then examined for the presence of the hepatitis B antigen (HBsAg). The immunodifusion technique showed that 12 impressions were presumably HBsAg positive, but the radioimmunoassay technique only confirmed 7 positive results. The positive samples were all obtained from Triatoma infestans nymphae.De 3.200 "manchas" provenientes de insetos dos gêneros Triatoma e Panstrogylus, positivas para sangue humano, 12 deram resultados presuntivamente positivos, por imunodifusão, para HBsAg. Deste total, só 7 casos foram confirmados como positivos, por radioimunoensaio, correspondendo todos eles a "manchas" obtidas de ninfas de Triatoma infestans
Petasis Three-Component Coupling Reactions of Hydrazides for the Synthesis of Oxadiazolones and Oxazolidinones
Portuguese emigration to Angola (2000-2015): Strengthening a specific postcolonial relationship in a new global framework?
Outflows to the Portuguese-speaking countries, although not dominant, played an important role in the growth of Portuguese emigration during the economic recession and austerity period, between 2010 and 2016. This chapter examines this migration process, considering that contemporary migration from Portugal to Angola is an example of reverse post-colonial migration within the framework of North-South movements.
It presents the historical and socio-demographic background of Angola and some theoretical insights on the issue of North-South migration. The analyses of the migration process and the emigrants’ profiles rely in statistics and academic literature but especially on data gathered in a direct survey. Attention is given to indicators of integration, relations with Portugal and the post-colonial nature of the process. The profile of Portuguese in Angola shows an overrepresentation of highly skilled males over 35 years old, which migrated for professional reasons and sustain relations with Portugal through diverse transnational practices. This supports explanations for the emergence of North-South migration by appeal to economic expansion associated to the increasing insertion of several developing countries into global networks. However, the analysis fails to back up the hypothesis that Portuguese emigration to Angola is a form of reverse post-colonial migration based in ancestral return.info:eu-repo/semantics/publishedVersio
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