939 research outputs found

    AUV Abyss workflow: autonomous deep sea exploration for ocean research

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    Autonomous underwater vehicles (AUVs) equipped with multibeam echosounders (MBES) are essential for collecting high-resolution bathymetric data in the deep sea. Navigation of AUVs and accuracy of acquired MBES data is challenging, especially in deep water or rough terrain. Here, we present the AUV Abyss operational workflow that uses mission planning together with a long baseline (LBL) positioning network, and systematic post-processing of the MBES data using feature matching. The workflow enables autonomous exploration even in difficult terrain, makes ultrashort baseline navigation during the AUV survey obsolete and with this, increases the efficiency of ship time. It provides an efficient workflow for multi-survey mapping campaigns to produce high-resolution, large-coverage seafloor maps. Automated documentation of post-processing steps enhances the archiving of produced results, facilitates knowledge transfer, adaptation to other systems and management of large datasets. Comprehensive documentation allows developing routines that provide a first step towards automatization of AUV operations and MBES data processing

    Alfabetização científica usando conceitos de eletroquímica e o meio ambiente a partir de histórias em quadrinhos

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    O desenvolvimento econômico e tecnológico do Brasil tem apresentado a necessidade de mudanças na educação, onde a atual baseia-se em formar um aluno crítico, que utilize seus conhecimentos de ciências para interagir com as informações que surgem a cada instante. A alfabetização científica e a contextualização têm sido alternativas eficientes na melhoria do ensino de Química. Nesse trabalho o conteúdo de eletroquímica foi abordado por ser considerado de difícil entendimento pelos discentes. A utilização de Histórias em Quadrinhos (HQ), aplicando a composição, descarte, desenvolvendo a consciência ecológica com método simples e de baixo custo, figurou- se alternativa viável visando a melhoria no ensino. Observou-se que as HQ tornaram o ensino atrativo, motivador, e aliado a encenação teatral, contribuiu no processo de ensino do conteúdo proposto

    ATUAÇÃO DO ENFERMEIRO NO PRÉ-NATAL

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    This research is a bibliographic review study of nursing care in prenatal care, as well as the approach in consultations, preventive actions and health promotion in primary care, with the participation of a qualified and multiprofessional team. Nurses have the role of monitoring pregnant women through prenatal consultations in a humanized practice. Effective prenatal care reduces mortality and early diagnosis can help treat infections that may occur during pregnancy. Through this attention provided to the woman, she feels more welcome, thus establishing a trust between the professional and the pregnant woman. Prenatal care consists of a set of clinical and educational procedures that aims to monitor the evolution of pregnancy and prepare the woman for childbirth. It is also the moment that the pregnant woman experiences different feelings thus making fundamental the bond between the pregnant woman and the nurse. The objective of this work was to conduct a bibliographic survey of articles in online databases in the period from 2017 to 2021 that addressed the chosen theme: Nursing practice in prenatal care. It is concluded that the nursing professional's performance in prenatal care is of paramount importance, because this is a period of preparation and discoveries, and the nurse is fully qualified to deal with doubts and to provide the necessary information for the pregnant woman and her family.Esta investigación es un estudio de revisión bibliográfica de los cuidados de enfermería en la atención prenatal, así como del abordaje en consultas, acciones preventivas y promoción de la salud en atención primaria, con la participación de un equipo cualificado y multiprofesional. Las enfermeras tienen el papel de monitorear a las mujeres embarazadas a través de consultas prenatales en una práctica humanizada. La atención prenatal efectiva reduce la mortalidad y el diagnóstico temprano puede ayudar a tratar las infecciones que pueden ocurrir durante el embarazo. A través de esta atención prestada a la mujer, se siente más acogida, estableciendo así una confianza entre el profesional y la mujer embarazada. La atención prenatal consiste en un conjunto de procedimientos clínicos y educativos que tiene como objetivo monitorear la evolución del embarazo y preparar a la mujer para el parto. También es el momento en que la mujer embarazada experimenta sentimientos diferentes, lo que hace fundamental el vínculo entre la mujer embarazada y la enfermera. El objetivo de este trabajo fue realizar una encuesta bibliográfica de artículos en bases de datos en línea en el período de 2017 a 2021 que abordara el tema elegido: La práctica de enfermería en la atención prenatal. Se concluye que el desempeño del profesional de enfermería en la atención prenatal es de suma importancia, porque este es un período de preparación y descubrimientos, y la enfermera está totalmente calificada para tratar dudas y proporcionar la información necesaria para la mujer embarazada y su familia.Esta pesquisa trata-se de um estudo de revisão bibliográfica da Assistência do enfermeiro no pré-natal, assim como a abordagem nas consultas, ações preventivas e promoção à saúde na atenção básica, com participação de uma equipe capacitada e multiprofissional. O enfermeiro tem o papel de fazer o acompanhamento das gestantes através de consultas de pré-natal numa pratica humanizada. Um pré-natal eficaz reduz a mortalidade e com o diagnóstico precoce pode auxiliar o tratamento de infecções que podem ocorrer durante a gestação. Por meio desta atenção prestada a mulher, ela se sente mais acolhida estabelecendo assim uma confiança entre o profissional e a gestante. A assistência pré-natal é constituída por um conjunto de procedimentos clínicos e educativos que tem como objetivo acompanhar a evolução da gravidez e preparar a mulher para o parto. É também o momento que a gestante vivencia diferentes sentimentos tornando assim fundamental o vínculo feito entre a gestante e o enfermeiro. O objetivo deste trabalho foi realizar um levantamento bibliográfico de artigos em bases de dados on-line no período de 2017 a 2021 que abordassem o tema escolhido: Atuação do enfermeiro no pré-natal. Conclui-se que a atuação do profissional de enfermagem no pré-natal é de suma importância, pois esse é um período de preparação e descobertas, sendo o enfermeiro totalmente capacitado para lidar com as dúvidas e para fornecer as informações necessárias para a gestante e sua família

    Prime Focus Spectrograph (PFS) for the Subaru Telescope: Overview, recent progress, and future perspectives

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    PFS (Prime Focus Spectrograph), a next generation facility instrument on the 8.2-meter Subaru Telescope, is a very wide-field, massively multiplexed, optical and near-infrared spectrograph. Exploiting the Subaru prime focus, 2394 reconfigurable fibers will be distributed over the 1.3 deg field of view. The spectrograph has been designed with 3 arms of blue, red, and near-infrared cameras to simultaneously observe spectra from 380nm to 1260nm in one exposure at a resolution of ~1.6-2.7A. An international collaboration is developing this instrument under the initiative of Kavli IPMU. The project is now going into the construction phase aiming at undertaking system integration in 2017-2018 and subsequently carrying out engineering operations in 2018-2019. This article gives an overview of the instrument, current project status and future paths forward.Comment: 17 pages, 10 figures. Proceeding of SPIE Astronomical Telescopes and Instrumentation 201

    High anti-SARS-CoV-2 antibody seroconversion rates before the second wave in Manaus, Brazil, and the protective effect of social behaviour measures: results from the prospective DETECTCoV-19 cohort

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    Background: The city of Manaus, Brazil, has seen two collapses of the health system due to the COVID-19 pandemic. We report anti-SARS-CoV-2 nucleocapsid IgG antibody seroconversion rates and associated risk factors in Manaus residents before the second wave of the epidemic in Brazil. Methods: A convenience sample of adult (aged ≥18 years) residents of Manaus was recruited through online and university website advertising into the DETECTCoV-19 study cohort. The current analysis of seroconversion included a subgroup of DETECTCoV-19 participants who had at least two serum sample collections separated by at least 4 weeks between Aug 19 and Oct 2, 2020 (visit 1), and Oct 19 and Nov 27, 2020 (visit 2). Those who reported (or had no data on) having a COVID-19 diagnosis before visit 1, and who were positive for anti-SARS-CoV-2 nucleocapsid IgG antibodies at visit 1 were excluded. Using an in-house ELISA, the reactivity index (RI; calculated as the optical density ratio of the sample to the negative control) for serum anti-SARS-CoV-2 nucleocapsid IgG antibodies was measured at both visits. We calculated the incidence of seroconversion (defined as RI values ≤1·5 at visit 1 and ≥1·5 at visit 2, and a ratio >2 between the visit 2 and visit 1 RI values) during the study period, as well as incidence rate ratios (IRRs) through cluster-corrected and adjusted Poisson regression models to analyse associations between seroconversion and variables related to sociodemographic characteristics, health access, comorbidities, COVID-19 exposure, protective behaviours, and symptoms. Findings: 2496 DETECTCoV-19 cohort participants returned for a follow-up visit between Oct 19 and Nov 27, 2020, of whom 204 reported having COVID-19 before the first visit and 24 had no data regarding previous disease status. 559 participants were seropositive for anti-SARS-CoV-2 nucleocapsid IgG antibodies at baseline. Of the remaining 1709 participants who were seronegative at baseline, 71 did not meet the criteria for seroconversion and were excluded from the analyses. Among the remaining 1638 participants who were seronegative at baseline, 214 showed seroconversion at visit 2. The seroconversion incidence was 13·06% (95% CI 11·52–14·79) overall and 6·78% (5·61–8·10) for symptomatic seroconversion, over a median follow-up period of 57 days (IQR 54–61). 48·1% of seroconversion events were estimated to be asymptomatic. The sample had higher proportions of affluent and higher-educated people than those reported for the Manaus city population. In the fully adjusted and corrected model, risk factors for seroconversion before visit 2 were having a COVID-19 case in the household (IRR 1·49 [95% CI 1·21–1·83]), not wearing a mask during contact with a person with COVID-19 (1·25 [1·09–1·45]), relaxation of physical distancing (1·31 [1·05–1·64]), and having flu-like symptoms (1·79 [1·23–2·59]) or a COVID-19 diagnosis (3·57 [2·27–5·63]) between the first and second visits, whereas working remotely was associated with lower incidence (0·74 [0·56–0·97]). Interpretation: An intense infection transmission period preceded the second wave of COVID-19 in Manaus. Several modifiable behaviours increased the risk of seroconversion, including non-compliance with non-pharmaceutical interventions measures such as not wearing a mask during contact, relaxation of protective measures, and non-remote working. Increased testing in high-transmission areas is needed to provide timely information about ongoing transmission and aid appropriate implementation of transmission mitigation measures. Funding: Ministry of Education, Brazil; Fundação de Amparo à Pesquisa do Estado do Amazonas; Pan American Health Organization (PAHO)/WHO.World Health OrganizationRevisión por pare
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