278 research outputs found

    Neurological Impacts of Covid-19 and Worldwide Scientific Production about the Subject: A Bibliometric Analysis

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    Introduction: The novel Coronavirus (COVID-19) was first reported by officials in Wuhan City, in December 2019. It has rapidly spread with confirmed cases in almost every country across the world and has caused a global public health crisis.¹ The epidemiological update of the World Health Organization on9th March 2021 showed that over 2.7 million new cases were reported. In this article, a biblometrical analysis of trending topics and what is being researched regarding COVID-19 and its neurological involvement is done. Methods: This research was conducted on the Web of Science Core Collection (WoS). For research in WoS, keywords in English were used, according to DeCS - Descriptors in Health Sciences. The search strategy with Boolean operators was: TS = (SARS-CoV-2 OR COVID-19) AND TS=(Neurologic Findings OR Neurology OR Neurologic Manifestations). Results: In total, 392 scientific productions were identified and included in this bibliometric analysis. The studies were publishedin the period between March 2020 and March 2021, with records prevalent in the themes of clinical neurology (n=234) and neurosciences (n=134), as well as several other areas. The thirty studies collected a total of 3395 citations, with variations from 1433 to 26 and average of 113 citations per study. All werepublished in 2020, with bigger prevalence in July (nine articles) and June (six articles). Conclusion: It is expected that this bibliometric survey will serve as a manner of presenting the main topics of study within neurology before COVID-19, in addition providing guidance for future research.

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

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    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

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    Peer reviewe

    Measurement of the top quark mass using charged particles in pp collisions at root s=8 TeV

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    Peer reviewe

    Search for anomalous couplings in boosted WW/WZ -> l nu q(q)over-bar production in proton-proton collisions at root s=8TeV

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    Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

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    A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

    Associação entre o perfil clínico e sociodemográficos das gestantes com pré-eclâmpsia

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    Submitted by JÉSSICA SANTOS ([email protected]) on 2018-07-17T15:29:33Z No. of bitstreams: 1 ve_João_Neto_et_al_2018.pdf: 243235 bytes, checksum: d647ae2778a588603763a6a252ea7303 (MD5)Approved for entry into archive by JÉSSICA SANTOS ([email protected]) on 2018-07-17T15:47:47Z (GMT) No. of bitstreams: 1 ve_João_Neto_et_al_2018.pdf: 243235 bytes, checksum: d647ae2778a588603763a6a252ea7303 (MD5)Made available in DSpace on 2018-07-17T15:47:47Z (GMT). No. of bitstreams: 1 ve_João_Neto_et_al_2018.pdf: 243235 bytes, checksum: d647ae2778a588603763a6a252ea7303 (MD5) Previous issue date: 2018Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil / Fundação Oswaldo Cruz. Escritório Técnico Regional do Piauí. Teresina, PI, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil / Universidade de Pernambuco. Recife, PE, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Faculdade de Ciências e Tecnologia do Maranhão. Caxias, MA, Brasil.Objetivo: O estudo propôs delinear e correlacionar o perfil clínico e sociodemográficos de gestantes com pré-eclâmpsia em uma maternidade e investigar as complicações associadas a pré-eclâmpsia. Metódos: Tratou-se de uma pesquisa de campo, do tipo documental, exploratório, descritiva com abordagem quantitativa. A população foi composta por 97 prontuários/ficha clínica de pacientes com pré-eclâmpsia em uma maternidade pública, no período de março a novembro de 2016. Resultados: Os resultados revelaram que a maioria das mulheres eram solteiras, com recorte etário entre 21 a 35 anos, parda, 2º grau completo, multíparas, hipertensas e com presença de proteinuria. Quanto ao diagnóstico admissional 62,9% apresentaram história de hipertensão arterial, sendo que em 70,1% estavam com hipertensão moderada. Na análise dos sinais e sintomas, predominou a dor epigástrica, distúrbio visual e cefaleia, em 42,3%. Em relação ao período gestacional, 75,3% se encontravam com idade gestacional entre 37 a 41 semanas com predomínio de partos pre-maturos (11,3%) Quanto aos exames de proteinuria grande parte das gestante apresentaram proteína na urina (91,8%). Conclusão: As gestantes com pré-eclâmpsia apresentou um quadro de hipertensão arterial, proteinúria, com distúrbio visual, com dor epigástrica configurando um importante quadro de saúde com potenciais de complicações para seus portadores

    Measurement of the total and differential inclusive B+\mathrm{B^+} hadron cross sections in pp collisions at s=13\mathrm{\sqrt{s} = 13} TeV

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    The total and differential cross sections for inclusive production of B+B^+ hadrons are measured as a function of the B+B^+ transverse momentum pTBp_{T}^{B} and rapidity yBy^{B} in pp collisions at a centre-of-mass energy of 13 TeV, using data collected by the CMS experiment that correspond to an integrated luminosity of 49.4 inverse-picobarns. The measurement uses the exclusive decay channel B+J/ψK+B^+ \to J/\psi K^+, with J/ψJ/\psi mesons that decay to a pair of muons. The results show a reasonable agreement with theoretical calculations within the uncertainties

    Measurement of the differential inclusive B+B^+ hadron cross sections in pp collisions at s\sqrt{s} = 13 TeV

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    The differential cross sections for inclusive production of B+B^+ hadrons are measured as a function of the B+B^+ transverse momentum pTBp_{T}^B and rapidity γB\gamma^B in pp collisions at a centre-of-mass energy of 13 TeV, using data collected by the CMS experiment that correspond to an integrated luminosity of 48.1 pb1^{−1} . The measurement uses the exclusive decay channel B+J/ψK+B^{+}\to J/\psi K^+ , with J/ψJ/\psi mesons that decay to a pair of muons. The results show a reasonable agreement with theoretical calculations within the uncertainties

    Studies of inclusive four-jet production with two b-tagged jets in proton-proton collisions at 7 TeV

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