Chemical and Hydraulic Behavior of a Tropical Soil Compacted Submitted to the Flow of Gasoline Hydrocarbons

Este capítulo avalia o comportamento de um solo tropical, e seu desempenho como barreira submetida à ação do fluxo de hidrocarbonetos da gasolina, pela interpretação do transporte de acordo com parâmetros físicos, químicos e aspectos micromorfológicos. Para isto a mineralogia foi caracterizada como também a influência da matéria orgânica (MO) considerando processos de adsorção dos hidrocarbonetos da gasolina e comportamento hidráulico em laboratório por meio da variação do gradiente hidráulico diante do fluxo da gasolina através de solo compactado. Dessa forma, este trabalho contribui para o entendimento da dinâmica do fluxo de compostos específicos: aromáticos, olefinas, hidrocarbonetos saturados e etanol, os quais são encontrados na gasolina tipo C brasileira (uma mistura complexa de compostos orgânicos). _________________________________________________________________________________________________ ABSTRACTThe aim of this study is to evaluate the behavior of a tropical soil, and their performance as liner against the flow of hydrocarbons from gasoline, by interpreting transportation according to physical and chemical parameters, as well as micromorphological aspects. For this characterized the mineralogy of the soil and the influence of his organic matter (OM), considering the adsorption processes of hydrocarbons from gasoline and hydraulic behavior in the laboratory by variation of the hydraulic gradient in front of the gasoline flow through compacted soil. This study also aims to contribute to the understanding of the dynamics of the flow through the soil of specific groups of compounds: aromatic, olephine, saturated hydrocarbons and the ethanol found in Brazilian type-C gasoline (a complex mixture of organic compounds)

Modelagem do Software PLM para Processo de Desenvolvimento e Ciclo de Vida de Produtos e Gestão de Projetos

Visando a sistematização e digitalização do processo de desenvolvimento de novos produtos, gerenciamento do ciclo de vida de produtos e gestão de projetos, uma cooperativa de alimentos do oeste paranaense que atua com abate e industrialização de suínos, contratou o serviço de uma consultoria especializada em transformação digital. Foram realizados workshops e reuniões com 11 áreas distintas e através de ferramentas de melhoria contínua como PDCA, análises de planilhas e do software de Gestão do Ciclo de Vida de Produtos (Product Lifecycle Management - PLM), obteve-se fluxograma do processo detalhado, que proporcionou a modelagem do sistema para posterior digitalização. Agregou informações corporativas quanto o gerenciamento do ciclo de vida de produtos, melhorando a análise de informações e otimização do tempo

Optimization and synthesis of multilayer frequency selective surfaces via bioinspired hybrid techniques

In this study, two bioinspired computation (BIC) techniques are discussed and applied to the project and synthesis of multilayer frequency selective surfaces (FSS) within the microwave band, specifically for C, X and Ku bands. The proposed BIC techniques consist of combining an artificial, general regression neural network to a genetic algorithm (GA) and a cuckoo search algorithm, respectively. The objective is to find the optimal values of separation between the investigated FSS. Numerical analysis of the electromagnetic properties of the device is made possible with the finite integration method (FIT) and validated through the finite element method (FEM), utilizing both softwares CST Microwave Studio and Ansys HFSS respectively. Thus, the BIC-optimized devices present good phase / angular stability for angles 10°, 20°, 30° and 40°, as well as being polarization independent. The cutoff frequencies to control the operating frequency range of the FSS, referring to transmission coefficient in decibels (dB), were obtained at a threshold of –10dB. Numerical results denote good accordance with measured data

Acquiring Knowledge the Quilombola Territory of the Jambuaçu River through the Games

This game aims to become a didactic-pedagogical tool to facilitate the interaction and transmission of history, culture and some traditional knowledge of quilombola community living in the Quilombola Territory of the Jambuaçu River, located in the municipality of Mojú, state of Pará, to be applied to the students of the local schools and students of the School of Application of the Federal University of Pará. It also aims to boost the interaction between these different worldviews, through the joint elaboration between quilombola researchers, community members of the Quilombola Territory of the Jambuaçu River and the others researcher

Avaliação da eficácia de um programa de aulas de educação física no desenvolvimento cognitivo de crianças abrigadas

O presente estudo foi submetido ao Comitê de Ética em Pesquisa envolvendo Seres Humanos da Universidade Castelo Branco – RJ, sendo aprovado sob protocolo nº. 0175/2008 e teve por objetivo avaliar a eficácia de um programa de aulas de educação física, para atuar no atraso do desenvolvimento cognitivo de crianças abrigadas. A amostra foi composta por seis crianças com cinco anos, abrigadas na Sociedade Civil de Amparo ao Menor-Abrigo, no Rio de Janeiro. A metodologia teve formato experimental, operacionalizado por meio de um sistema de avaliações efetuadas antes e depois da intervenção proposta. Como estratégia metodológica para avaliar o nível de organização das estruturas cognitivas das crianças foi utilizada o conjunto de ‘Provas Operatórias’ propostas por Piaget (1975, apud WEISS, 2001), classificando-se o nível de organização das estruturas cognitivas das crianças. A partir dos resultados pôde-se concluir pela eficácia da intervenção educacional aplicada, tendo em vista a maior maturação das estruturas cognitivas observada na segunda avaliação

Circulation of Dengue virus serotype 1 genotype V and Dengue virus serotype 2 genotype III in Tocantins state, Northern Brazil, 2021–2022

In Brazil, the state of Tocantins, located in north-central Brazil, has experienced a significant number of cases of arboviral disease, particularly Dengue virus (DENV). This study aimed to deepen the knowledge on DENV circulation within that state by conducting full genome sequencing of viral genomes recovered from 61 patients between June 2021 and July 2022. There were a total of 8807 and 20,692 cases in 2021 and 2022, respectively, as reported by the state’s Secretary of Health. Nucleotide sequencing confirmed the circulation of DENV serotype 1, genotype V and DENV serotype 2, genotype III in the State. Younger age groups (4 to 43 years old) were mostly affected; however, no significant differences were detected regarding the gender distribution of cases in humans. Phylogenetic analysis revealed that the circulating viruses belong to DENV-1 genotype V American and DENV-2 genotype III Southeast Asian/American. The Bayesian analysis of DENV-1 genotype V genomes sequenced here are closely related to genomes previously sequenced in the state of São Paulo. Regarding the DENV-2 genotype III genomes, these clustered in a distinct, well-supported subclade, along with previously reported isolates from the states of Goiás and São Paulo. The findings reported here suggest that multiple introductions of these genotypes occurred in the Tocantins state. This observation highlights the importance of major population centers in Brazil on virus dispersion, such as those observed in other Latin American and North American countries. In the SNP analysis, DENV-1 displayed 122 distinct missense mutations, while DENV-2 had 44, with significant mutations predominantly occurring in the envelope and NS5 proteins. The analyses performed here highlight the concomitant circulation of distinct DENV-1 and -2 genotypes in some Brazilian states, underscoring the dynamic evolution of DENV and the relevance of surveillance efforts in supporting public health policies

Genomic epidemiology reveals the circulation of the Chikungunya virus east/central/south african lineage in Tocantins State, north Brazil

The chikungunya virus (CHIKV) is a mosquito-borne virus of the family Togaviridae transmitted to humans by Aedes spp. mosquitoes. In Brazil, imported cases have been reported since June 2014 through two independent introductions, one caused by Asian Lineage in Oiapoque, Amapá state, North Region, and another caused by East/Central/South African (ECSA) in Feira de Santana, Bahia state, Northeast Region. Moreover, there is still limited information about the genomic epidemiology of the CHIKV from surveillance studies. The Tocantins state, located in Northern Brazil, reported an increase in the number of CHIKV cases at the end of 2021 and the beginning of 2022. Thus, to better understand the dispersion dynamics of this viral pathogen in the state, we generated 27 near-complete CHIKV genome sequences from four cities, obtained from clinical samples. Our results showed that the newly CHIKV genomes from Tocantins belonged to the ECSA lineage. Phylogenetic reconstruction revealed that Tocantins’ strains formed a single well-supported clade, which appear to be closely related to isolates from the Rio Grande do Norte state (Northeast Brazil) and the Rio de Janeiro state (Southeast Brazil), that experienced an explosive ECSA epidemic between 2016–2019. Mutation analyses showed eleven frequent non-synonymous mutations in the structural and non-structural proteins, indicating the autochthonous transmission of the CHIKV in the state. None of the genomes recovered within the Tocantins samples carry the A226V mutation in the E1 protein associated with increased transmission in A. albopictus. The study presented here highlights the importance of continued genomic surveillance to provide information not only on recording mutations along the viral genome but as a molecular surveillance tool to trace virus spread within the country, to predict events of likely occurrence of new infections, and, as such, contribute to an improved public health service

Adapting the land agricultural suitability assessment scheme for drylands edaphoclimatic conditions

ABSTRACT The rational exploitation of the land requires planning its agricultural use, which can be supported by the agricultural land suitability (ALS) assessment. The scheme to assess ALS proposed by Food Agricultural Organization (FAO) has been adopted in Brazil based on guiding charts for subtropical, humid tropical and semi-arid tropical climate. However, the guiding chart used for the semi-arid region has dramatically limited the ALS in drylands on which rainfed agriculture has been practiced. In this study, an adequation for the ALS assessment regarding the edaphoclimatic conditions of semi-arid region was proposed to improve the representation of agricultural areas and to allow a better planning of soil conservation practices. The ALS of the south region of Ceará State (Brazil) was assessed according to the FAO scheme and its initial adaptation to the Brazilian conditions; subsequently, this assessment was obtained by two adequations. Adequation I disregarded the limiting factor of water availability, while adequation II, besides disregarding the factor of water availability, established new limits for the classes of effective soil depth. The adequations resulted in an increase of 177.19 % in the areas with regular suitability for crops to the detriment of areas with restricted suitability for crops and areas with suitability only for pasture or grazing lands. The adequations increased the agricultural suitability in 41.26 % of the area of the mapping units, and 16.77 % of them were due to the modifications related to the effective soil depth, while the other 26.35 % were due to the changes related to water availability. The results related to water availability were equivalent to those observed through the dynamic analysis of land-use and cover associated with the rainfall, which demonstrated an increase in the areas for rainfed agriculture and a reduction in fallow and pasture areas in the years with rainfall within the climatic normality. The areas considered suitable for crop production with the adequation of the scheme may be included in soil conservation programs

Simulação de propagação de sinais de radiofrequência como metodologia de ensino em engenharia / Simulation of radiofrequency signal propagation as an engineering teaching methodology

Esse artigo descreve uma metodologia para o ensino de propagação utilizando um software de código fonte aberto, chamado PyLayers, que tem como objetivo facilitar o processo de aprendizado de conceitos de propagação indoor. Entretanto, não é comum que os discentes do curso de graduação em engenharia da computação e telecomunicações tenham algum contato com este tipo de software. Partindo dessa premissa, o estudo deste simulador proporciona ao aluno de engenharia, a oportunidade de se familiarizar com este tipo de ferramenta computacional. Além disso, a metodologia proposta será usada como um complemento aos métodos de ensino convencionais, ajudando alunos a consolidar os conceitos ensinados no curso e motivá-los a explorar conceitos relevantes sobre propagação através do aprendizado interativo. As tarefas de aprendizado usando a metodologia baseada no uso do software PyLayers foram divididas em quatro etapas: apresentação dos conceitos relativos a propagação indoor, visualização do código PyLayers, teste do código na linha de comando em linguagem Python e interatividade através de mapas de calor dos parâmetros apresentados pela teoria de propagação. Assim, ele complementa o ensino tradicional, melhorando a eficiência na aprendizagem e facilitando o entendimento, conforme verificado pela aplicação de um minicurso submetido aos alunos de engenharia da computação e telecomunicações. As métricas objetivas foram avaliadas para comprovar a eficiência no aprendizado