The sand tiger shark (Carcharias taurus) is a critically endangered species, whose spatial ecology in the Southwest Atlantic Ocean remains poorly understood. This study is the first regional attempt to elucidate the habitat conditions linked to the distribution and occurrence of this migratory coastal shark, using the largest regional dataset for the Southwest Atlantic. An ensemble of species distribution models was applied to assess various environmental predictors of habitat suitability for C. taurus. Our occurrence data was obtained throughout the species’ distribution range along Brazil, Uruguay, and Argentina. These data were compiled mainly from artisanal and recreational fishing records, and are linked to research, reporting efforts and projects. Results indicated that bathymetry, bottom temperature, primary productivity, and salinity were important environmental factors linked to the species occurrence and suitable habitats. These factors were mainly associated with coastal and estuarine habitats. Areas with high suitability for C. taurus were identified in Northern Argentina, the entirety of the La Plata River estuarine mouth and extended shelf, between Uruguay and Southern Brazil, and Southeast Brazil, indicating these subregions as priority areas for the species’ conservation. Ensemble forecasting projections showed a habitat suitability retraction in colder months for southern latitudes. Our study also gathered novel insights on the species' biology and occurrence from unpublished data.
In this work, we demonstrate that the hyperboloidal foliation technique, applied to the study of black hole quasinormal modes, where the spatial boundary is shifted from spacelike infinity to the future event horizon and null infinity, is effectively equivalent to the continued fraction approach, in which the asymptotic wave function typically diverges at both ends of spatial infinity. Specifically, a given hyperboloidal slicing, corresponding to a particular choice of coordinates, always uniquely determines a scheme for extracting the asymptotic form of the wave function at the spatial boundary. Owing to the mathematical equivalence, it follows that the efficiency and precision observed using the hyperboloidal approach should be attributed, not to avoiding the pathological behavior at the spatial boundaries, but primarily to other factors, such as the use of Chebyshev grids.
This study aimed to construct and validate a mobile application to guide children and adolescents in oncological care in self-reported pain. This is a descriptive study, based on a systematic instructional design that was conducted from 2022 to 2023 on working in pediatric care at two hospitals in Brazil. The content was validated by healthcare professionals, using the content validity index and cutoff score of 0.80. Face validity was assessed by children and adolescents, and a 90% agreement rate was used. The application, named "CuidaDor Web App," comprises four sections: user identification, presence of pain through numerical and facial scales and a body map, history of records, and informative materials. In the content evaluation, the judges assessed seven items: Language, Content, Illustrations, Layout, Motivation, Relevance, and Usability Assessment. The overall content validation index was 0.95. A face validation involved 24 children and adolescents, achieving over 90% concordance rate. However, usability requires parents' assistance for children using the tool. The CuidaDor Web App was developed and validated by healthcare professionals, children, and the target audience. The app may contribute to the management of pain in children and adolescents with cancer during hospitalization and at home. Future studies are needed to evaluate the age group that benefits most from technology and the use of the application as a tool for nurses and healthcare professionals.
Breast cancer is the most frequent among women in the world and in Brazil. New treatment strategies are considerably increasing survival rates in the context of Breast cancer, making it important to study the physical, social, and emotional effects of the disease and its treatments. In this context, integrative medicine emerges as a strategy based on scientific evidence, along with conventional therapy, with a mind-body approach with the use of natural products and lifestyle changes. The aim of this study was to carry out a brief literature review on integrative medicine and lifestyle in women who survived Breast cancer. This is an integrative review carried out with studies indexed in PubMed. Eight search strategies were carried out using the keywords: “survivorship,” “breast cancer,” “lifestyle,” “nutrition,” “physical activity,” “alcohol,” “tobacco,” “sleep,” “distress,” and “relationship,” respecting the period between 2015 and 2021. In all, 166 articles were found. Studies that considered other types of cancer and did not focus on the lifestyle of cancer survivors were excluded from the analysis. The remaining 28 articles referring to the proposed theme were read and analyzed in full. The results were described according to the six pillars of a healthy lifestyle proposed by the American College of Lifestyle Medicine, being addressed as follows: (1) nutrition, (2) physical activity, (3) stress, (4) substance abuse (alcohol and tobacco), (5) sleep, and (6) healthy relationships (marital relationships and social support), showing the importance of training health services and professionals in cancer survival programs to provide better guidance to patients with Breast cancer on how to use integrative therapies properly and what lifestyle changes can help optimize various aspects of your health, reducing the risk of recurrence or a new câncer.
Este estudo analisa o comportamento de torres de telecomunicações estaiadas sob a ação do vento, estruturas caracterizadas pela alta esbeltez e flexibilidade. A metodologia consistiu em uma análise estática baseada na norma NBR 6123 e uma análise dinâmica utilizando a formulação de Monte Carlo para simular a parcela flutuante do vento. Na modelagem estrutural, empregaram-se elementos finitos de cabos e treliças com comportamento linear elástico, comparando dois modelos matemáticos (linear e não-linear) para o pré-tensionamento dos cabos. O equilíbrio estático foi obtido via algoritmo Quasi-Newton. Os resultados demonstram que a consideração conjunta das ações estáticas e dinâmicas é indispensável para a determinação precisa dos esforços axiais máximos nos componentes da torre.
