A representação da realeza e da nobreza na Crónica de 1419

Dissertação apresentada para cumprimento dos requisitos necessários à obtenção do grau de Mestre em História, Especialidade de História Medieval.O objeto de análise desta dissertação é a Crônica de Portugal de 1419, de autoria até hoje ainda duvidosa, esta, enquadrada no gênero literário denominado cronística medieval, tem como tema específico para este trabalho a representação da realeza e da nobreza no seio do referido título. Procuraremos essencialmente estudar como estas duas classes estão representadas nesta Crônica, buscando sempre apresentar os motivos que levaram o seu autor a relatar as passagens nelas descritas, a maneira e a disposição em que se encontram, isto é, privilegiando alguns, excluindo outros e até mesmo, em alguns casos, tentando esclarecer os pretextos que levaram a descrevê-los de maneira divergente se comparada a história tradicional. O que de certa forma pode ser interpretada como um modo de prestigiar ou denegrir certos paradigmas históricos e toda a carga simbólica a eles associados. É importante salientarmos que as crônicas, neste fim de idade média, desempenharam um lugar de destaque para a apreciação da historiografia portuguesa, suas composições foram lavadas a cabo basicamente pela e para o enaltecimento da realeza e a nobreza. Acima de tudo, tais discursos, neste período de afirmação da dinastia de Avis, era de suma importância para a criação de uma ideologia que buscasse no passado a legitimação de uma nova cruzada que obtivesse o apoio de nobres cavaleiros para a disseminação da fé católica, só que agora em solo africano

Tradition in Continuity: thermal monitoring in vernacular architecture of farmsteads from northeast Portuguese region of Trás-os-Montes

The study focuses on the identification of a typology of vernacular architecture, characterized by dispersion and isolation on a territory usually associated with concentrated settlements. This paper aims to contribute for understanding how local factors (climate, economy, culture, etc.) influenced vernacular architecture in the northeast of Portugal by analysing the strategies and building solutions that enable it to cope with climatic adversities. Through in situ monitoring temperatures and relative humidity,is attempted to show the potential of the case studies in maintaining the indoor air temperatures within the boundaries of comfort even when the external temperatures are outside the boundaries

Influence of micro-aeration in the production of volatile fatty acids (VFA) from wastewaters with high salinity

Waste management and valorization are seen as pivotal drivers for adopting a circular economy. The production of volatile fatty acids (VFA) through anaerobic digestion (AD) fits perfectly into these emerging social and industrial dynamics, being the VFA considered valuable products, namely in chemical industries. Therefore, this work focuses on VFA production through AD, using wastes and wastewaters, with high salinity content (20 g/L) in continuous bioreactors. The effect of micro-aeration during acidogenesis of high-salinity wastes/wastewaters was accessed for more than 500 days, divided in 5 main periods, by analysing different physicochemical parameters like oxidationreduction potential (ORP), salinity, pH, COD, and VFA profile. Sludge properties were also analysed through quantitative image analysis (QIA) and integrating Principal Component Analysis (PCA). The results demonstrate that the high salinity does not appear as a limiting factor, with soluble COD (30 g/L) being constant through operation time in both reactors, as well as VFA/sCOD ratio (60 % 80 %). Due to micro-aeration, differences between anoxic (R1) and microaerophilic (R2) reactors were observed, with the second one presenting lower value of ORP in some periods during the assay. This indicates the presence of aerobic or facultative microorganisms, which have consumed oxygen. Also, higher concentrations of hexanoate in the microaerophilic reactor (R2) were obtained in those periods. The application of QIA combined with PCA has revealed that micro-aeration significantly impacts the morphology and size of aggregates.info:eu-repo/semantics/publishedVersio

Photodeposition of silver on Zinc/Calcium ferrite nanoparticles: A contribution to efficient effluent remediation and catalyst reutilization

The efficient photodegradation of textile dyes is still a challenge, especially considering resistant azo dyes. In this work, zinc/calcium mixed ferrite nanoparticles prepared by the sol-gel method were coupled with silver by a photodeposition method to enhance the photocatalytic potency. The obtained zinc/calcium ferrites are mainly cubic-shaped nanoparticles sized 15 ± 2 nm determined from TEM and XRD and an optical bandgap of 1.6 eV. Magnetic measurements indicate a superparamagnetic behavior with saturation magnetizations of 44.22 emu/g and 27.97 emu/g, respectively, for Zn/Ca ferrite and Zn/Ca ferrite with photodeposited silver. The zinc/calcium ferrite nanoparticles with photodeposited silver showed efficient photodegradation of the textile azo dyes C.I. Reactive Blue 250 and C.I. Reactive Yellow 145. Subsequent cycles of the use of the photocatalyst indicate the possibility of magnetic recovery and reutilization without a significant loss of efficiency.This work was supported by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding of CF-UM-UP (UIDB/04650/2020) and research project PTDC/QUI-QFI/28020/2017 (POCI-01-0145-FEDER-028020) funded by FCT, FEDER, PORTUGAL2020, and COMPETE2020

Arbustus unedo essence: morphological and genetic characterization of the strawberry tree of Castelo de Paiva

O medronheiro é um arbusto da região mediterrânica que pode ser encontrada por todo o país. Ao contrário do que verifica na região sul do país, no concelho de Castelo de Paiva é atribuída uma reduzida importância económica a esta espécie. Com o intuito de preservar e potenciar a produção desta espécie e contribuir para a dinamização da economia do concelho, procedeu-se à caracterização morfológica e genética de uma amostra da população de medronheiros de Castelo de Paiva. A caracterização morfológica e genética foi realizada para um total de 10 genótipos. Para tal recolheram-se 70 folhas aleatoriamente em cada árvore. Em 40 folhas mediu-se o comprimento, largura, comprimento do pedúnculo, peso fresco, peso seco e determinou-se a área foliar. Dos caracteres morfológicos analisados, aqueles que se revelaram mais úteis na distinção dos vários genótipos foram: comprimento do pedúnculo, peso fresco e peso seco. As restantes 30 folhas foram utilizadas para a caracterização genética. Esta caracterização foi realizada recorrendo a um marcador de DNA, ISSR. Os 5 primeiros exemplaresutilizados na técnica de ISSR demonstraram-se polimórficos. Os resultados da caracterização genética sugerem que a variabilidade genética na população é média a alta.The strawberry tree is a shrub native in the Mediterranean region and it can be found throughout Portugal. Unlike the case in the southern region of the country, in Castelo de Paiva a minor economic importance is given to this species. In order to preserve, to enhance the production of this species and to contribute to the boosting of the economy of the region, we proceeded to the characterization of a small sample population of this fruit tree of Castelo de Paiva in what concerns to its morphology and genetics. The morphological and genetic characterization was performed for a total of 10 genotypes. For this, 70 leaves were randomly collected from each tree. For 40 leaves, it was measured the length, the width, the peduncle length, the wet weight, the dry weight and determined the leaf area. Of the morphological characteristics analyzed, the ones that proved most useful in distinguishing the various genotypes were: the length peduncle, the wet weight and the dry weight. The remaining 30 leaves were used in the genetic characterization. This characterization was performed using a DNA marker, the ISSR. The 5 primers used in the ISSR technique proved to be polymorphic. The results from the genetic characterization suggest that variability in population genetics is medium to high

Diagnosis, Prognosis and Treatment of Canine Cutaneous and Subcutaneous Mast Cell Tumors

Mast cell tumors (MCTs) are hematopoietic neoplasms composed of mast cells. It is highly common in dogs and is extremely important in the veterinary oncology field. It represents the third most common tumor subtype, and is the most common malignant skin tumor in dogs, corresponding to 11% of skin cancer cases. The objective of this critical review was to present the report of the 2nd Consensus meeting on the Diagnosis, Prognosis, and Treatment of Canine Cutaneous and Subcutaneous Mast Cell Tumors, which was organized by the Brazilian Association of Veterinary Oncology (ABROVET) in August 2021. The most recent information on cutaneous and subcutaneous mast cell tumors in dogs is presented and discussed

Determinants of HIV late presentation among men who have sex with men in Portugal (2014–2019): who’s being left behind?

Introduction: HIV late presentation (LP) remains excessive in Europe. We aimed to analyze the factors associated with late presentation in the MSM population newly diagnosed with HIV in Portugal between 2014 and 2019. Methods: We included 391 newly HIV-1 diagnosed Men who have Sex with Men (MSM), from the BESTHOPE project, in 17 countrywide Portuguese hospitals. The data included clinical and socio-behavioral questionnaires and the viral genomic sequence obtained in the drug resistance test before starting antiretrovirals (ARVs). HIV-1 subtypes and epidemiological surveillance mutations were determined using different bioinformatics tools. Logistic regression was used to estimate the association between predictor variables and late presentation (LP). Results: The median age was 31 years, 51% had a current income between 501-1,000 euros, 28% were migrants. 21% had never been tested for HIV before diagnosis, with 42.3% of MSM presenting LP. 60% were infected with subtype B strains. In the multivariate regression, increased age at diagnosis, higher income, lower frequency of screening, STI ever diagnosed and higher viral load were associated with LP. Conclusion: Our study suggests that specific subgroups of the MSM population, such older MSM, with higher income and lower HIV testing frequency, are not being targeted by community and clinical screening services. Overall, targeted public health measures should be strengthened toward these subgroups, through strengthened primary care testing, expanded access to PrEP, information and promotion of HIV self-testing and more inclusive and accessible health services.info:eu-repo/semantics/publishedVersio

Expedição ao Sítio Histórico e Patrimônio Cultural Kalunga: um Relato de Experiência

The Kalunga Historical and Cultural Heritage Site (SHPCK) is located in the northeast of Goiás and is considered one of the best-preserved areas of native Cerrado in all of Brazil. This is due to local geographic characteristics and mainly to the sustainable character of agricultural production by the traditional peoples who inhabit the region. In addition to having a vast preserved territory, the Kalungas have unique traditional knowledge about local plants. Due to biodiversity, they have access to herbal plants that can be used in human and animal food. However, the number of species of toxic plants may also considered high. With this report we aim to describe the unique experience that was the Expedition to the Kalunga Historical and Cultural Site and Heritage, as well as to emphasize the importance of the toxic plants of the Cerrado and the appreciation of traditional knowledge.A Comunidade Quilombola Kalunga fixou-se no Sítio Patrimônio Histórico e Cultural Kalunga (SHPCK), localizado no nordeste do estado de Goiás, e é considerada uma das áreas mais bem preservadas de Cerrado nativo em todo o Brasil. Isso se deve à dificuldade de acesso, às características geográficas locais e também ao caráter sustentável da produção agropecuária do povo quilombola que habita a região. Além de possuírem vasto território preservado, os Kalungas detêm conhecimento tradicional singular sobre as plantas locais e, graças à biodiversidade do Cerrado, eles têm acesso a plantas fitoterápicas e que podem ser utilizadas na alimentação humana e animal. No entanto, o número de espécies de plantas tóxicas também pode ser considerado elevado. Com este relato, objetivamos descrever a experiência única que foi a Expedição ao Sítio e Patrimônio Histórico e Cultural Kalunga, assim como ressaltar a importância das plantas tóxicas do Cerrado e da valorização do conhecimento tradicional.A Comunidade Quilombola Kalunga fixou-se no Sítio Patrimônio Histórico e Cultural Kalunga (SHPCK), localizado no nordeste do estado de Goiás, e é considerada uma das áreas mais bem preservadas de Cerrado nativo em todo o Brasil. Isso se deve à dificuldade de acesso, às características geográficas locais e também ao caráter sustentável da produção agropecuária do povo quilombola que habita a região. Além de possuírem vasto território preservado, os Kalungas detêm conhecimento tradicional singular sobre as plantas locais e, graças à biodiversidade do Cerrado, eles têm acesso a plantas fitoterápicas e que podem ser utilizadas na alimentação humana e animal. No entanto, o número de espécies de plantas tóxicas também pode ser considerado elevado. Com este relato, objetivamos descrever a experiência única que foi a Expedição ao Sítio e Patrimônio Histórico e Cultural Kalunga, assim como ressaltar a importância das plantas tóxicas do Cerrado e da valorização do conhecimento tradicional