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Recensão crítica: Henrique Pereira dos Santos e Duarte Belo (2022), Das pedras, pão / Bread from stones, Lisboa: Museu da Paisagem
Get PDFinfo:eu-repo/semantics/publishedVersio
Novel Comparative Study for the Detection of COVID-19 Using CT Scan and Chest X-ray Images
Get PDFThe number of coronavirus disease (COVID-19) cases is constantly rising as the pandemic
continues, with new variants constantly emerging. Therefore, to prevent the virus from spreading,
coronavirus cases must be diagnosed as soon as possible. The COVID-19 pandemic has had a
devastating impact on people’s health and the economy worldwide. For COVID-19 detection, reverse
transcription-polymerase chain reaction testing is the benchmark. However, this test takes a long time
and necessitates a lot of laboratory resources. A new trend is emerging to address these limitations
regarding the use of machine learning and deep learning techniques for automatic analysis, as
these can attain high diagnosis results, especially by using medical imaging techniques. However,
a key question arises whether a chest computed tomography scan or chest X-ray can be used for
COVID-19 detection. A total of 17,599 images were examined in this work to develop the models
used to classify the occurrence of COVID-19 infection, while four different classifiers were studied.
These are the convolutional neural network (proposed architecture (named, SCovNet) and Resnet18),
support vector machine, and logistic regression. Out of all four models, the proposed SCoVNet
architecture reached the best performance with an accuracy of almost 99% and 98% on chest computed
tomography scan images and chest X-ray images, respectively.info:eu-repo/semantics/publishedVersio
Impacto de um programa preventivo com base no treino da força para redução de lesões e incremento da força dos membros inferiores em jogadores de uma equipa de futebol profissional
Get PDFNeste trabalho procuramos estudar em que circunstâncias o treino preventivo
influencia o incremento da força dos membros inferiores (ao nível da performance) bem
como a diminuição do risco de lesão, tendo por base a aplicação de uma bateria de teste
a jogadores de futebol no decorrer da semana de trabalho durante uma época desportiva.
O contexto específico do treino para a modalidade requer esforço para encontrar
estratégias e métodos para rentabilizar o tempo e espaço no treino, de tal forma que, no
nosso entender, a prevenção de lesões e o incremento da performance poderá estar
diretamente ligado a estas decisões.
Segundo Oliveira (2016), as lesões são classificadas como agudas e crónicas. As
lesões agudas ocorrem imediatamente após um microtraumatismo maior, com
manifestação de sinais e sintomas precoces, ou mesmo imediatos nos casos mais graves,
onde a fase inflamatória aparece com os seus sinais / sintomas característicos. As lesões
crónicas mais comuns são as tendinopatias, bursites, apofisites ou enteropatias (lesões
nos locais de inserção óssea das estruturas musculo tendinosas) e fraturas de fadiga.
Numa primeira fase realizámos uma pesquisa bibliográfica relacionada com o
tema, para enquadrar e fundamentar o nosso estudo. Posteriormente, procedeu-se ao
levantamento das variáveis a considerar: o impacto do programa preventivo na redução
do número de lesões; o impacto do programa preventivo no incremento da força dos
membros inferiores e, por fim, o número de lesões durante os períodos de avaliação da
época desportiva e sua relação com o tipo de programa preventivo aplicado.
A amostra foi composta por 67 jogadores que pertenciam às equipas seniores do
Clube Sport Marítimo (Equipa A, B e Sub-23). As avaliações realizaram-se no ginásio,
nos momentos de treino.
Foi aplicado um questionário adaptado de Morgado (2007, validado por consenso
com o objetivo de analisar a importância no desenvolvimento da força dos membros
inferiores e a prevenção de lesões através da realização de um programa preventivo no
decorrer de uma época desportiva. A versão final do questionário ficou constituída por
22 questões: com respostas rápidas e escolha múltipla, distribuídas por 5 secções.
Analisou-se a normalidade das variáveis em estudo através do teste de
Kolmogorov-Smirnov. Recorreu-se a estatística descritiva, média e desvio padrão para
caracterizar amostra nas variáveis em estudo. O teste Anova de medidas repetidas foi utilizado para analisar as diferenças entre os três momentos nas variáveis em estudo. Para
determinar as diferenças entre os dois grupos nos diversos momentos recorremos aos
testes Mann Whitney e T-Student através do programa Statistical Package for the Social
Sciences (SPSS 27.0).
Os resultados obtidos indicam um aumento da performance dos membros
inferiores através da aplicação do plano de força; Todas as avaliações registaram um
aumento da performance na relação entre o primeiro com o último momento de avaliação;
O número de lesões reduziu da época transata para a época atual tendo em conta apenas
os jogadores que deram continuidade ao programa preventivo; A maioria dos jogadores
(93.75%) vê o treino de força como um fator importante de prevenção de lesões e aumento
da performance na modalidade desportiva; 98.07% dos jogadores que foram submetidos
ao programa de treino afirmam que ocorreu um incremento da performance no decorrer
da época desportiva. O grupo que não realizou o plano individual de força registou um
maior número de lesões.In this study, we aimed to investigate the circumstances under which preventive
training influences the increase in lower limb strength (in terms of performance) and the
reduction of injury risk. This investigation was based on the application of a battery of
tests to soccer players throughout a sports season.
The specific context of training for this sport requires effort to find strategies and
methods to make the most of training time and space. In our view, the prevention of
injuries and the enhancement of performance may be directly linked to these decisions.
According to Oliveira (2016), injuries are classified as acute and chronic. Acute injuries
occur immediately after a major microtrauma, manifesting early signs and symptoms, or
even immediately in severe cases, where the inflammatory phase appears with its
characteristic signs/symptoms. The most common chronic injuries include
tendinopathies, bursitis, apophysitis, or enteropathies (injuries at the sites of
musculotendinous structure insertions) and fatigue fractures.
In the initial phase, we conducted a literature review related to the topic to frame
and substantiate our study. Subsequently, we identified the variables to consider: the
impact of the preventive program on reducing the number of injuries, the impact of the
preventive program on increasing lower limb strength, and the number of injuries during
the evaluation periods of the sports season and their relationship with the type of
preventive program applied.
The sample consisted of 67 players from the senior teams of Clube Sport Marítimo
(Team A, B, and Under-23). The evaluations were conducted in the gym during training
sessions.
We used a questionnaire adapted from Morgado (2007), validated by consensus,
to analyze the importance of developing lower limb strength and preventing injuries
through the implementation of a preventive program during a sports season. The final
version of the questionnaire consisted of 22 questions, with quick answers and multiple choice options, distributed across five sections.
We assessed the normality of the study variables using the Kolmogorov-Smirnov
test. Descriptive statistics, including mean and standard deviation, were used to
characterize the sample with respect to the study variables. The repeated measures
ANOVA was employed to analyze differences between the three evaluation time points for the variables under study. To determine differences between the two groups at various
time points, we used Mann-Whitney and T-Student tests with the Statistical Package for
the Social Sciences (SPSS 27.0).
The results indicate an improvement in lower limb performance through the
implementation of the strength plan. All evaluations showed an increase in performance
between the first and last assessment moments. The number of injuries decreased from
the previous season to the current season for the players who continued with the
preventive program. The majority of players (93.75%) consider strength training as an
important factor in injury prevention and performance enhancement in sports. 98.07% of
players who underwent the training program reported an increase in performance during
the sports season. The group that did not follow the individual strength plan experienced
a higher number of injuries
From a heavy metal perspective, is macroalgal biomass from Madeira Archipelago and Gran Canaria Island of eastern Atlantic safe for the development of blue bioeconomy products?
Get PDFMacroalgae are considered a valuable source of several compounds with nutritional, nutraceutical, cosmeceutical, and phar maceutical applications. They are also used for crop fertilization and biofortifcation by introducing important minerals into
the soil essential for crop productivity. At the same time, however, they are known bio-accumulators of some heavy metals. In
this work, we assessed the content of 7 minerals considered as heavy metals in 25 macroalgae samples, comprising 4 greens,
9 reds and 12 browns, from Madeira Archipelago, Portugal, for their potential use as blue bioeconomy products. These heavy
metals included zinc (Zn) with concentrations that ranged from 1.95 – 242.65 mg kg−1 dw, nickel (Ni, 0.6 – 34.78 mg kg−1
dw), copper (Cu, 0.42 – 7.98 mg kg−1 dw), chromium (Cr, 0.47 – 45.74 mg kg−1 dw), cadmium (Cd, 0.1 – 2.58 mg kg−1 dw),
lead (Pb, 0.05 – 2.79 mg kg−1 dw) and mercury (Hg, 0.03 – 8.49 µg kg−1 dw). We also analysed 22 samples of beach-cast
macroalgae from Gran Canaria Island, Spain, collected from November 2016 to November 2019. The same heavy metals
were assessed with their concentrations that ranged as follows: Zn (11.41 – 42.20 mg kg−1 dw), Ni (3.17 – 17.78 mg kg−1
dw), Cu (1.85 – 4.20 mg kg−1 dw), Cr (6.08 – 37.98 mg kg−1 dw), Cd (0.02 – 0.11 g kg−1 dw), Pb (0.16 –5.42 mg kg−1 dw)
and Hg (3.59 – 31.00 µg kg−1 dw). These concentrations are all within the normal ranges reported in earlier studies in low
industrialized areas, except for the brown algae Gongolaria abies-marina and Sargassum vulgare with high mean (±SD) Cd
concentration (1.91±0.36 and 1.75±0.07 g kg−1 dw respectively). Our results suggest that most of the biomass prospected
in these localities covered in the present study would be a viable source of materials for the development of a blue economy
industry with emerging products following the European Union directives.info:eu-repo/semantics/publishedVersio
Evolving SPIDe Towards the Integration of Requirements Elicitation in Interaction Design
Get PDFAmong the various interaction (re)design processes and approaches, SPIDe is a semio-participatory
methodological process inspired by communication-centered design. However, the development of computational
solutions is not limited to interaction design. Requirements elicitation is also an integral part of this process. Some
SPIDe studies indicated that it is also possible to raise requirements through its application due to its participatory
characteristics. This article presents an investigation on the feasibility of SPIDe when applied to requirements elic itation integrated with interaction design, presenting an exploratory case study. From the perspective of different
experts, we explain the strengths and needs of SPIDe in supporting requirements elicitation integrated into inter action design. Data were collected through logbooks, semi-structured interviews, and the TAM questionnaire and
then analyzed through thematic analysis. The results show that the SPIDe use for requirements elicitation integrated
into the interaction design is feasible. Furthermore, they indicated that possible improvements in SPIDe could ben efit the development of the computational solutions considering a single application of SPIDe to obtain data for
interaction design and requirements elicitation integrated.info:eu-repo/semantics/publishedVersio
Realismo enfermizo mexicano. Reygadas y Escalante
Get PDFViaje hiperrealista hacia el abismo de la sociedad mexicana contemporánea, que Luis Buñuel
inauguraría con el estreno de Los olvidados en 1950, donde se entremezclaba la pobreza, mal dad y una inquietante extrañeza muy naturalista. En este artículo se analizarán una selección
de películas incómodas y transgresoras de Amat Escalante y Carlos Reygadas, en las que
predominan un realismo patológico, mediante narrativas cercanas a lo amargo e inverosímil.
Largometrajes que exhiben deseos reprimidos, violencia, impunidad y corrupción. Lacras y
obsesiones que infelizmente sufre el México actual, en el que ambos autores se expresan de
manera portentosa y crítica hacia dichas plagas. Por último, producciones que nos evocan
una mirada poética e incisiva sobre las diversas problemáticas del país norteamericano.A hyper-realistic journey into the abyss of contemporary Mexican society, which Luis
Buñuel would inaugurate with the premiere of The Forgotten in 1950, where poverty, evil
and a disturbance, very naturalistic strangeness intermingled. In this paper, a selection
of uncomfortable and transgressive films by Amat Escalante and Carlos Reygadas will
be analyzed, in which pathological realism predominates, through narratives close to the
bitter and implausible. Feature films that exhibit repressed desires, violence, impunity, and
corruption. Blemishes and obsessions that current Mexico unfortunately suffers, in which
both authors express themselves in a portentous and critical way towards these plagues.
Finally, productions that evoke a poetic and incisive look at the various problems of the
North American country.info:eu-repo/semantics/publishedVersio
Clinical supervision in the child welfare and protection services: a narrative review
Get PDFContexto: As especificidades dos sistemas de promoção e proteção de crianças e jovens exercem um grande impacto no profissional
e, consequentemente, no trabalho com as famílias, pelo que a supervisão clínica se constitui como um forte aliado na promoção do
bem-estar e proficiência dos profissionais. Objetivo: O presente trabalho teve como objetivo principal realizar uma revisão da
literatura sobre a adequabilidade dos modelos de supervisão às especificidades do contexto de promoção e proteção de crianças e
jovens, tendo em conta as funções de supervisão, modelos de supervisão e desafios do contexto. Métodos: Foi realizada uma revisão
narrativa através da pesquisa de palavras-chave, leitura dos resumos de artigos encontrados e posterior leitura na integra dos artigos
que se adequaram ao tema definido. Foram analisados artigos sobre supervisão e supervisão clínica em contextos sociais e de
promoção e proteção de crianças e jovens. Resultados: Predomina a utilização de um modelo de supervisão de abordagem única ou
de modelos ecléticos com abordagens teóricas divergentes entre si e que não atendem à complexidade dos sistemas familiares
sinalizados. Conclusões: Defende-se um modelo com um referencial de leitura integrativo, mas, fundamentalmente, apoiado numa
visão ecossistémica do mal trato da criança e do funcionamento familiar, que tenha conhecimento dos procedimentos da instituição e
que promova um apoio efetivo ao profissional. Mais estudos devem ser realizados tendo em vista avaliar a influência efetiva da
supervisão na prática do profissional com as famílias e a identificação das caraterísticas dos modelos que os tornam eficazes em
promoção e proteção.Background and Aim: The specificities of child welfare and protection systems have a major impact on professionals and,
consequently, on the work with families. Clinical supervision is a strong ally in promoting the well-being and proficiency of professionals.
Objective: The main purpose of this study was to conduct a literature review on the appropriateness of supervision models to the
specificities of the context of welfare and protection of children and young people, considering the roles of supervision, the supervision
models, and the challenges of the context. Method: A narrative review was conducted by searching for keywords, reading the abstracts
of the articles found, and reading in full the articles that fit the defined theme. Articles on supervision and clinical supervision in social
and child and youth promotion and protection contexts were analyzed. Results: A single-approach supervision model or eclectic models
with divergent theoretical approaches that do not address the complexity of the family systems identified predominates. Conclusions:
We advocate a model with an integrative reading frame but fundamentally supported by an eco-systemic view of child maltreatment and
family functioning, which is aware of the institution's procedures and promotes effective support to the professional. Further studies
should be conducted to evaluate the effective influence of supervision on the practice of professionals with families and to identify the
characteristics of the models that make them effective in promotion and protection.info:eu-repo/semantics/publishedVersio
O desamparo do sujeito na contemporaneidade: a insustentável leveza de ser
Get PDFA relevância deste trabalho, de revisão bibliográfica, em
uma abordagem psicanalítica, concerne no sentido de que
para melhor entendermos a construção do sujeito em
nossa contemporaneidade, faz-se necessária uma análise
dos novos laços sociais formados, ressaltando as
características de sua formação, os determinantes
socioculturais implícitos na construção destes laços e suas
consequências, ajudando assim na compreensão de como
o sujeito contemporâneo faz suas escolhas e de como é
organizado, vivido e interiorizado o seu cotidiano.info:eu-repo/semantics/publishedVersio
Delving into agri-food waste composition for antibacterial phytochemicals
Get PDFThe overuse of antibiotics in the healthcare, veterinary, and agricultural industries has led to the development of antimicrobial resistance (AMR), resulting in significant economic losses worldwide and a growing healthcare problem that urgently needs to be solved. Plants produce a variety of secondary metabolites, making them an area of interest in the search for new phytochemicals to cope with AMR. A great part of agri-food waste is of plant origin, constituting a promising source of valuable compounds with different bioactivities, including those against antimicrobial resistance. Many types of phytochemicals, such as carotenoids, tocopherols, glucosinolates, and phenolic compounds, are widely present in plant by-products, such as citrus peels, tomato waste, and wine pomace. Unveiling these and other bioactive compounds is therefore very relevant and could be an important and sustainable form of agri-food waste valorisation, adding profit for local economies and mitigating the negative impact of these wastes’ decomposition on the environment. This review will focus on the potential of agri-food waste from a plant origin as a source of phytochemicals with antibacterial activity for global health benefits against AMR.</jats:p
Evaluation of tropane alkaloids in teas and herbal infusions: effect of brewing time and temperature on atropine and scopolamine content
Get PDFAtropine and scopolamine belong to the tropane alkaloid (TA) family of natural toxins. They can contaminate teas and herbal teas and appear in infusions. Therefore, this study focused on analyzing atropine and scopolamine in 33 samples of tea and herbal tea infusions purchased in Spain and Portugal to determine the presence of these compounds in infusions brewed at 97 °C for 5 min. A rapid microextraction technique (µSPEed®) followed by high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) was used to analyze the selected TAs. The results showed that 64% of the analyzed samples were contaminated by one or both toxins. White and green teas were generally more contaminated than black and other herbal teas. Of the 21 contaminated samples, 15 had concentrations above the maximum limit for liquid herbal infusions (0.2 ng/mL) set by Commission Regulation (EU) 2021/1408. In addition, the effects of heating conditions (time and temperature) on atropine and scopolamine standards and naturally contaminated samples of white, green, and black teas were evaluated. The results showed that at the concentrations studied (0.2 and 4 ng/mL), there was no degradation in the standard solutions. Brewing with boiling water (decoction) for 5 and 10 min allowed for higher extraction of TAs from dry tea to infusion water.</jats:p