A tomografia computadorizada de tórax como ferramenta auxiliar no diagnóstico de COVID-19 / Computed tomography of the chest as an auxiliary tool in the diagnosis of COVID-19

Objetivo: Avaliar a eficácia da Tomografia Computadorizada (TC) de tórax como ferramenta auxiliar no diagnóstico de COVID-19.Métodos: É um coorte realizado em pacientes com sintomas respiratórios compatíveis com SARS-CoV-2 que realizaram TC de tórax em uma clínica privada e, posteriormente, realizaram exames para COVID-19 entre 29 de abril de 2020 e 10 de maio de 2020. Dentre os 513 pacientes do estudo, apenas 132 participaram da casuística final por respeitarem os critérios de inclusão: pacientes maiores de 18 anos, assinatura do Termo de Consentimento Livre e Esclarecido, sob a suspeita de COVID-19. Foram excluídos aqueles que não realizaram exames comprobatórios ou não contactados pelos pesquisadores. Os pacientes foram contactados por via telefônica para coleta de idade, alterações pulmonares na TC e resultado do exame comprobatório realizado.Resultados: A casuística final foi de 132 pacientes (média de idade 47,8 ± 14,7 anos). A TC evidenciou o padrão em vidro fosco em até 25% do pulmão de 32,7% dos pacientes. O valor preditivo positivo dos intervalos percentuais de acometimento pulmonar (0-10%, 10-25%, 25-50%, 50-100%) foi de, respectivamente, 20%, 53,91%, 82,85%, 95,71%. Dos exames comprobatórios de COVID-19, o mais solicitado foi o Teste Rápido (52), o PCR (51) e as Sorologias pelo método ELISA (36). A positividade dos exames foi de: teste rápido em 67,31%; PCR em 82,25%; as sorologias em 86,11%.Conclusões: A TC de tórax pode ser uma ferramenta útil no diagnóstico de COVID-19 no Brasil. Porém, o resultado negativo não descarta o diagnóstico, necessitando de mais informações disponíveis

Cinquenta (50) anos da Lei 4.320/1964 : Desafios e perspectivas para a contabilidade pública brasileira

Faz uma retrospectiva da Contabilidade Pública no Brasil, tendo como referência a Lei 4.320, de 1964

Paleoenvironmental evolution of the Aptian Romualdo Formation, Araripe Basin, Northeastern Brazil

The tectonic evolution of the Equatorial Atlantic Gateway (EAG) throughout the early Cretaceous had global implications. This break-up of western Gondwana has played a significant role in causing, or amplifying, environmental changes due to its influence on ocean chemistry, nutrient distribution, water mass circulation, and bottom waters ventilation. However, the timing of its establishment and the areal extent of this oceanic gateway is still poorly constrained. Marine settings were recorded by the black shales of the Romualdo Formation (Late Aptian), Araripe Basin - Northeastern Brazil, which are known worldwide for their fossil content and importance for paleogeographic reconstructions of Gondwana. In this contribution, we present multiproxy analyses, combining macro- and micropaleontological, as well as sediment compositional data to evaluate paleoenvironmental conditions during the deposition of sedimentary strata assigned to the Romualdo Formation. We investigate the ~100-m-thick succession of the Sobradinho Section, which is the most complete exposure of the Romualdo Formation. Increased abundances of ostracods, the occurrence of agglutinated benthic foraminifera, bakevelliid bivalves, and cassiopid gastropods coincide with levels of relatively high paleosalinity estimates based on the Sr/Ba (strontium/barium) and S/TOC (sulfur/total organic carbon) ratios. These levels correspond to a transgressive system tract and the lower interval of a highstand systems tract. Throughout the section, black shales occur intercalated with sparse sandstone and calcarenite levels, and the deposition of these black shales is associated with dysoxic to anoxic bottom water conditions, as suggested by the V/Cr (vanadium/chrome) ratio. The occurrence of stagnant bottom water conditions may explain the mass mortality of ostracods in the lower interval of the succession. The upper part of the highstand system tract in the studied section was deposited in coastal environments and is characterized by coarser-grained siliciclastic-dominated facies (high log(Zr/Rb) (zirconium/rubidium) ratio), as well as increased phytoclasts and terrigenous (high magnetic susceptibility) contents

Sob o signo neoliberal: as relações internacionais da América Latina

As relações internacionais da América Latina são vistas sob o ângulo da transição da diplomacia do desenvolvimento para a diplomacia neoliberal. Os estudos de relações internacionais, particularmente no Brasil e na Argentina, fundamentam a interpretação do autor sobre benefícios e malogros do paradigma neoliberal, visto como uma opção ideológica. A noção de Estado logístico é sugerida como alternativa estratégica ao Estado normal.<br>In this article, international relations in Latin America are analysed through the viewpoint of the transition from a diplomacy of development to a neoliberal model. Studies in International Relations as a discipline, especially those carried out in Brazil and Argentina, are the basis for the author's interpretation about benefits and failures of the neoliberal paradigm, understood as an ideological option. The author forwards the notion of Logistic State as a strategic alternative to the Normal State

Growing knowledge: an overview of Seed Plant diversity in Brazil

Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora