Sistema de enclausuramento e transporte de pacientes com doenças infectocontagiosas

No final de 2019, a comunidade mundial alarmou-se perante a pandemia que o vírus COVID-19 causou e um dos grandes problemas gerados por este vírus é a sua fácil transmissão. Como consequência houve e ainda há superlotação em hospitais e CTIs. Constatou-se dificuldade no transporte de pacientes positivos para o Covid-19, ocorrendo a infecção de outras pessoas que ainda não contraíram o vírus, mas que se encontram no ambiente hospitalar. Desta forma, projetou-se uma estratégia para prevenção do contágio, que é o desenvolvimento de um sistema inteligente de enclausuramento, ergonômico e que atende todas as normas da engenharia e protocolos médicos. Além disso, o sistema de enclausuramento é compatível com corredores, ambulâncias do SAMU, helicópteros, facilitando o transporte do paciente, e, ainda pode ser usado como um local de isolamento caso não haver leitos isolados disponíveis para o tratamento de pacientes positivos para Covid-19 ou outras doenças infectocontagiosas. Desta forma, observa-se que a tecnologia empregada, não se aplica apenas ao tratamento com pacientes positivos parta Covid-19, mas, também, para quaisquer que estejam com doenças infectocontagiosas

Weed detection and mapping of a coffee farm by a remotely piloted aircraft system

The differentiation between the main crop and weeds is an important step for selective spraying systems to avoid agrochemical waste and reduce economic and environmental impacts. In this sense, this study aims to classify and map the area occupied by weeds, determine the percentage of area occupied, and indicate treatment control strategies to be adopted in the field. This study was conducted by using a yellow Bourbon cultivar (IAC J10) with 1 year of implementation on a commercial coffee plantation located at Minas Gerais, Brazil. The aerial images were obtained by a remotely piloted aircraft (RPA) with an embedded multispectral sensor. Image processing was performed using PIX4D, and data analysis was performed using R and QGIS. The random forest (RF) and support vector machine (SVM) algorithms were used for the classification of the regions of interest: coffee, weed, brachiaria, and exposed soil. The differentiation between the study classes was possible due to the spectral differences between the targets, with better classification performance using the RF algorithm. The savings gained by only treating areas with the presence of weeds compared with treating the total study area are approximately 92.68%

Sistema e dispositivo para monitoramento remoto de parâmetros diversos na avicultura

Trata-se de um sistema e dispositivo para monitoramento remoto, pertencente ao setor industrial dos meios e equipamentos eletroeletrônicos utilizando hardwares e softwares destinados a coleta e avaliação de parâmetros variados, visando o controle, acompanhamento e adoção das providências e soluções necessárias de conformidade com as informações obtidas e registradas, para aplicação na criação de aves e de seus produtos derivados, permitindo o monitoramento da temperatura, umidade relativa, teor de amônia no ar, luminosidade e demais coordenadas relevantes, executadas por meio da aplicação do sensoriamento remoto usando a Internet como rede de comunicação de dados que podem ser armazenados e analisados posteriormente

MOLPROJ - Molecular orbital analysis by projection operators

Física e Química FQ13-Fís Molecl Física Molecular (ou física atômica, reação nuclear, estrutura molecular, radiatividade, radiometria); FQ14-Química (composto químico, subst ância combustível, substância química, propriedade química, legação química, radical químico, reação qu ímica, composiçã o química, polímero inorgânico); FQ16-Fís-Quím (análise f ísico-química, processos físicos-químicos)

Survival and demography of the tomato borer (Tuta absoluta) exposed to citrus essential oils and major compounds

Tuta absoluta is a pest of importance: quick to disperse and difficult to control due to the cases of resistance to insecticide active ingredients. Thus, studies using essential oils (EOs) to search for new molecules should be intensified. The objective of the present study was to evaluate the toxicity of EOs from Citrus aurantifolia (lime), Citrus aurantium (petitgrain) and Citrus aurantium bergamia (bergamot) and its major compounds against T. absoluta in a topical application test. Additionally, the demographic parameters of T. absoluta were studied after the topical application of EOs. The median lethal time (LT50) of the population was 12h for the three EOs tested. The median lethal concentration (LC50) was 33.75, 38.78 and 35.05 µg µL−1 for C. aurantifolia, C. aurantium and C. aurantium bergamia, respectively. As found using gas chromatography coupled to mass spectrometry (GC-MS) quantification, 44.74% of the EO of C. aurantifolia is α-terpineol, while 55.45% and 58.12% of the EO of C. aurantium and C. aurantium bergamia, respectively, is linalyl acetate. The toxicity of the major compounds was tested at concentrations equivalent to the LC50 of the EOs, that is, 16.2 µg µL−1 for α-terpineol, and 25.8 µg µL−1 for linalyl acetate, using topical application. Both of the major compounds showed less toxicity than the EOs. In the sublethal effects tests, all the EOs negatively affected the demographic parameters of T. absoluta, with a decrease in the duration of larval instars, duration of the pupal period, fecundity, oviposition and viability of the eggs, implying a reduction in the population growth parameters of this pest. The EOs of lime, petitgrain and bergamot are toxic to T. absoluta, and low concentrations cause deleterious effects on the reproductive and population parameters of T. absoluta

Cinema e estética: aproximações entre Walter Benjamin e Glauber Rocha

No presente artigo, aborda-se o tema do cinema, com foco nas proposições estéticas e na aproximação do pensamento de Walter Benjamin e da produção fílmica de Glauber Rocha. O problema que constituiu o eixo central da investigação foi definido, a partir da indagação: como ler Glauber Rocha à luz dos conceitos estéticos benjaminianos? Para analisar este problema, adotamos os procedimentos da pesquisa bibliográfica com destaque para estudos de obras de Walter Benjamin “A obra de arte na era de sua reprodutibilidade” (1955) e “Origem do drama barroco alemão”(1984) e de Glauber Rocha “Uma Estética da Fome” (1965), “Revolução do cinema novo” (1980) que elegemos como referencial teórico. Como objetivos, propomos caracterizar alguns fundamentos estéticos sobre o cinema em Benjamin e em Glauber Rocha e estabelecer possíveis aproximações quanto aos valores estéticos relacionados ao cinema por esses autores

Spontaneous vegetation as an alternative to cover crops in olive orchards reduces water erosion and improves soil physical properties under tropical conditions

This research aimed to study the effects of different cover crops on chemical and physical properties in olive orchards, under tropical conditions, to investigate erosive processes by measuring soil and water losses, and to determine the best management cover crop in olive orchards. We assessed soil and water losses under different cover management practices: olive planted on bare soil (OBS); intercropped olive with spontaneous vegetation (OSV); intercropped olive with jack beans (OJB); intercropped olive with millet (OMI); intercropped olive with sunn hemp (OSH), and bare soil (BS). The experiment was carried out for two hydrological years (2015/2016 and 2016/2017) in the Southern region of Minas Gerais, Brazil. Experimental setup consisted of fifteen standard plots (12 m x 4 m), in a Cambisol, with slope of 0.23 m m-1. In both rainy seasons, treatments with cover crops showed significant efficiency to reduce soil loss. OSV treatment showed good performance in the reduction of water erosion, revealing lower values of total soil loss of 25 Mg ha-1 period-1 and 0.55 Mg ha-1 period-1 in first and second season, respectively. Based on the results, it is recommended to use spontaneous vegetation as a cover crop in olive plantations at least during the first season. This proved to be able to reduce soil and water losses. For subsequent years, a combination or a transition of other cover crops is possible, since soil losses for treatments OJB (0.41 Mg ha-1 period-1), and OSV (0.55 Mg ha-1 period-1) were statistically grouped using a non-metric multidimensional scaling with a good performance (final stress = 0.069). This decision between spontaneous vegetation or a profitable cover crop should be adopted by farmers considering technical and financial aspects

Structure and composition of the nematode community in a restoration area affected by iron tailings

In 2015, the Fundão Dam collapse released over 40 million m3 of iron mine tailings, causing several environmental damages. Certain affected areas were revegetated with a mix of fast-growing species that can allowed the return of some organisms of soil fauna. Nematodes are the most abundant multicellular organisms in soil and are commonly used as bioindicators. Therefore, this study aimed to use the nematode community as bioindicators of the restoration process of an area affected by iron tailings at the margins of the Gualaxo do Norte River. Soil samples were collected from affected and native forest areas to perform physical, chemical, biochemical, and biological analyses. Nematodes were identified and classified according to feeding habits and on a colonizer-persisters (cp) scale. A non-metrical multidimensional scaling and PERMANOVA were conducted to assess differences between communities. Shannon’s diversity index and the maturity index were significantly higher in the restoration area. There was a difference in the composition and the structure of nematode communities of the restoration and reference area, nematode genus occurrence and abundance were different between the areas resulting in differences in feeding habits and life strategies according to the cp scale. The cp-5 nematodes are more abundant in the restoration area and cp-1 in the forest reference area. Bacterivore nematodes were more abundant in the reference forest area. In addition, the soil attributes in the restoration area were altered following the tailings deposition. Such alterations include high pH, low organic matter content, and low microbial biomass, which consequently influenced the structure and the composition of the nematode community. This is likely the first report of soil nematode community diversity in the areas of the Rio Doce Basin impacted by the Fundão tailings, and nematodes proved to be good bioindicators to show the differences between the restoration and forest reference area

Growth inhibitory activities and feeding deterrence of solanaceae-based derivatives on fall armyworm

Spodoptera frugiperda is a pest of worldwide importance, responsible for significant economic losses, mainly in maize crops. The use of botanical derivatives emerges as a promising alternative to control this insect pest. In this work, we evaluated the effect of ethanolic extracts (EE) and semi-purified fractions of Acnistus arborescens and Datura stramonium (Solanaceae) on the biological development of S. frugiperda and the effects of the semi-purified fractions on feeding behavior of 4th instar caterpillars. Crude extracts and fractions caused lethal and sublethal effects, namely increasing both duration of larval and pupal stages as well as deformities in adults, and decreasing weight of pupae. In turn, the effects on feeding deterrence were more pronounced in treatments with A. arborescens fractions. Our results highlight the potential of EE from solanaceous species as a source of allelochemicals that can be used in the integrated management of S. frugiperda

The contemporary denialist speech in the political field: a case study

The global crisis caused by the New Coronavirus (Covid-19) pandemic caused millions of deaths around the world and created a rupture in the functioning of contemporary society, especially connected to the scientific field, political and midiatic. In this moment of crisis, there was an increase in Fake News and social bubbles that proposed the absence of interpretation of speech and led a part of people to believe everything that hears and/or read. In that sense, this work aims has as analysis to understand the speech said denialist by a Brazilian authority during the pandemic in 2020 and how it constituted itself. In this scenario, the role and speech of the President of the Republic in this crisis are extreme important to inform the population. Thus, the present research was developed from a speech uttered in the pronouncement during the Covid-19 pandemic, specifically in early 2020, by former president Jair Messias Bolsonaro, transmitted by an open television and published on websites. In this sense, based on the analysis of this pronouncement, you emphasize the role of former President Bolsonaro's political speech and the prioritization, for example, of the economy to the detriment of science. The work leanes on this speech and argues that Bolsonaro underestimated the gravity of the pandemic and took advantage of this “disinformation” to use it as a political strategy. These issues stand out how the role of this political leader “undermined” science and brought up the denialist discourse, which is why this research is relevant. Furthermore, the work supports is an theoretical analysis by references and discussions made by authors such as Pechêux (2014), Courtine (2014), Maingueneau (2010, 2015) and Eni Orlandi (2005) with the concept of conditions of production (historicity) and with that of subject; Maingueneau (2006, 2015) with the discourse places (paratopia) and Jesus (2006) and Fancelli (2021) with the focus on denialism. As a conclusion of this analysis, we understand that within Bolsonaro's pronouncement, the denialist speech emerges from strategies, that retretat from the scientific speech and also lead us to better understand the notion of denialism and distiguish it from a process closer to the simple act of denying, which implies a speech often without argumentation.A crise global causada pela pandemia do Novo Coronavírus (Covid-19) provocou milhões de mortos no mundo todo e criou uma ruptura no funcionamento da sociedade contemporânea, especialmente ligada ao campo científico, político e midiático. Nesse momento de crise, houve o aumento de Fake News e de bolhas sociais que propiciaram a ausência de interpretação de discursos e levaram uma parte das pessoas a acreditar em tudo que ouve e/ou lê. Nesse sentido, este trabalho tem como objetivo analisar e compreender o discurso dito negacionista por uma autoridade brasileira durante a pandemia em 2020 e como ele se constituiu. Nesse cenário, o papel e a fala do presidente da república nessa crise são de extrema importância para informar a população. Assim, a presente pesquisa foi desenvolvida a partir de um discurso proferido no pronunciamento durante a pandemia de Covid-19, especificamente no início de 2020, pelo ex-presidente Jair Messias Bolsonaro, transmitido pela televisão aberta e publicado em sites. Nesse sentido, com base na análise desse pronunciamento, enfatiza-se o papel do discurso político do ex-presidente Bolsonaro e da priorização, por exemplo, da economia em detrimento da ciência. O trabalho debruça-se nesse discurso e argumenta que Bolsonaro subestimou a gravidade da pandemia e aproveitou dessa “desinformação” para usá-la como estratégia política. Essas questões destacam como o papel desse líder político “minou” a ciência e trouxe à tona o discurso negacionista, por isso, inclusive, esta pesquisa mostra-se relevante. Ademais, o trabalho apoia-se numa análise teórico-analítica por intermédio das referências e das discussões feitas por autores como Pechêux (2014), Courtine (2014), Maingueneau (2010, 2015) e Eni Orlandi (2005) com o conceito de condições de produção (historicidade) e com o de sujeito; Maingueneau (2006, 2015) com o de lugares de discurso (paratopia) e Jesus (2006) e Fancelli (2021) com o recorte do negacionismo. Como conclusão dessa análise, compreendemos que no interior do pronunciamento de Bolsonaro o discurso negacionista emerge a partir de estratégias, que se afastam do discurso científico e nos leva também a compreender melhor a noção de negacionismo e diferenciá-la de um processo mais próximo ao simples ato de negar, o que implica em um discurso muitas vezes sem argumentação