Cross Section
Mostrando 1-12 de 786 artigos, teses e dissertações.
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1. Autonomic heart rate modulation in patients with coronavirus disease 2019 in mechanical ventilation
SUMMARY BACKGROUND: Patients with coronavirus disease 2019 on automatic mechanical ventilation have greater heart rate modulation with greater parasympathetic modulation. OBJECTIVE: To analyze the autonomic modulation of heart rate in critically ill patients with coronavirus disease 2019 on invasive mechanical ventilation. METHODS: A cross-section study w
Revista da Associação Médica Brasileira. Publicado em: 2023
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2. Premenstrual Syndrome and Childbirth Fear Prior to Pregnancy in Young Women: An Association and Cross-Sectional Study
SUMMARY OBJECTIVE: The aim of the study was to determine the association between premenstrual syndrome and the childbirth fear prior to pregnancy. METHODS: This was an association and cross-sectional study conducted on 327 university students. Data were collected using “Participant Information Form,” “Premenstrual Syndrome Scale,” and “Childbirth
Revista da Associação Médica Brasileira. Publicado em: 2022
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3. Prevalence of primary dysmenorrhea and associated factors in adult women
SUMMARY OBJECTIVE: This study aimed to assess the prevalence and factors associated with primary dysmenorrhea in a sample of adult women. METHODS: A cross-sectional study was carried out with women aged between 19 and 49 years from a city of northeastern Brazil. Sociodemographic, gynecological, and obstetric variables were assessed by questionnaires and in
Revista da Associação Médica Brasileira. Publicado em: 2022
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4. O efeito de políticas públicas e de características locais sobre o desenvolvimento econômico: uma análise empírica baseada nos municípios de Minas Gerais
Resumo Esta pesquisa usou dados cross-section, centrados em 2016, para analisar o efeito da distribuição dos gastos públicos e de certas preferências econômicas, demográficas e políticas no desenvolvimento dos municípios de Minas Gerais (i.e.: Índice Mineiro de Responsabilidade Social - IMRS) e suas subdimensões (i.e.: educação, saúde, vulnerabi
Nova Economia. Publicado em: 2022
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5. Fuzzy Modelling to Describe the Pollutant Concentration in Fluids
ABSTRACT The study of the concentration dynamics of a pollutant substance in a fluid is a classic problem of fluid mechanics given by the transport equation u t + cu x = 0, where u = u(x,t) denotes the pollutant concentration along a horizontal pipe of a fixed cross-section in the positive x direction at he time t > 0 and c represents the fluid propagation
Trends in Computational and Applied Mathematics. Publicado em: 2022
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6. Local characteristics and the Covid-19 pandemic: an analysis focused on the municipalities from the Brazilian state of Minas Gerais
Resumo Visando compreender os motivos que levaram certas localidades a enfrentar mais/menos dificuldades no combate à COVID-19, estimou-se o efeito de determinadas características municipais sobre as principais estatísticas desta doença. Para tanto, consideraram-se dados cross-section (com casos/óbitos acumulados até 21 de abril/2021), sobre os municí
Economia e Sociedade. Publicado em: 2022
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7. Hemoglobin S identification in blood donors: A cross section of prevalence
ABSTRACT Introduction: In Brazil, the sickle cell trait (SCT) has an average prevalence of 4% in the general population and 6-10% among Afro-descendants. Although SCT is highly prevalent, a large segment of the population ignores their status. The Therapeutic Guidelines prohibit the transfusion of SCT red blood cells into patients with hemoglobin disorders
Hematology, Transfusion and Cell Therapy. Publicado em: 2022
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8. Finite element computational development for thermo-mechanical analysis of plane steel structures exposed to fire
Abstract This article presents a numerical formulation based on finite element procedures for application in nonlinear thermo-mechanical analyses of steel planar structures under fire condition. The mechanical properties of structural elements degrade when subjected to high temperatures, resulting in significant reductions in strength and stiffness. Under th
REM - International Engineering Journal. Publicado em: 2022
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9. Designing and fabrication of a low-cost dip-coater for rapid production of uniform thin films
In this work, a self-made dip-coater equipment was developed for the fabrication of thin films. The assembly of the apparatus was carried out using simple mechanical and electronic pieces, recycle parts, and spending an inexpensive budget suitably. The production, software design, and features of the device were focused on the sol-gel dip-coating method, whi
Química Nova. Publicado em: 2022
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10. Optimum design of steel columns filled with concrete via genetic algorithm: environmental impact and cost analysis
Abstract The use of concrete-filled tubular columns as part of structural systems has steadily increased throughout the years. The growing demand for structural elements of this nature is a direct result of the possibility to use various cross-section shapes that have increased strength, along with resistance to fire and other corrosive agents. The main obje
REM - International Engineering Journal. Publicado em: 2022
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11. The Role of Eye Color in the Emergence of Tinnitus in Silence
Abstract Introduction Previous research suggests that African Americans are less likely than Caucasians to perceive tinnitus in sustained silence. Objective To evaluate the association between non-cutaneous melanin as indicated by eye color and the emergence of temporary tinnitus during a brief period of silence. Methods A cross-section of adults grouped
International Archives of Otorhinolaryngology. Publicado em: 2022
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12. Breastfeeding in infants seen in private pediatric practices and its relation with type of delivery and history of prematurity
Abstract Objective: To describe the type of milk used to feed infants seen in private pediatric practices in Brazil. To evaluate the relationship between breastfeeding, type of delivery, and history of prematurity. Methods: This is a cross-sectional and observational study that included 4929 infants in the first year of life seen in private pediatric pract
Jornal de Pediatria. Publicado em: 2022