Global Stability
Mostrando 1-12 de 217 artigos, teses e dissertações.
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1. A Mathematical Model for Accessing Dengue Hemorrhagic Fever in Infants
ABSTRACT A mathematical model was developed to describe the dynamics of the primary infection of dengue virus in infants who were born to a mother immune to some serotype of the dengue virus. The model is given by a system of nonlinear ordinary differential equations with time-dependent variables for the number of dengue virus antibodies of the infant transf
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. Patients and physician’s self-assessment regarding clinical stability in severe mental disorders: a cross-sectional study
RESUMO Objetivo Este estudo explora a relação entre a autoavaliação dos pacientes e a avaliação dos médicos quanto à estabilidade clínica. Métodos Trata-se de um estudo transversal realizado no ambulatório do Instituto de Psiquiatria da Universidade Federal do Rio de Janeiro (IPUB-UFRJ) em uma ampla amostra de pacientes (1.447), dos quais 67,9
Jornal Brasileiro de Psiquiatria. Publicado em: 2022
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3. Indigo Carmine Hemodynamic Studies to Treat Vasoplegia Induced by Compound 48/80 in a Swine Model of Anaphylaxis
Abstract Introduction: There are many reasons to believe that the nitric oxide/guanosine 3’5’ - cyclic monophosphate (or NO/cGMP) pathway on vasoplegic states is underestimated. To study indigo carmine (IC) as an alternative to methylene blue was the investigation rationale. Methods: The IC (3mg/kg intravenous infusion) study protocol included five exp
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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4. Low-dose ketamine does not improve the speed of recovery from depression in electroconvulsive therapy: a randomized controlled trial
Objective: Electroconvulsive therapy (ECT) is a well-established therapeutic intervention for major depressive disorder. Recent literature has shown that the anesthetic agent ketamine has some antidepressant properties at low doses and may be an alternative therapy for treatment-resistant major depressive disorder. We hypothesized that the use of low-dose ke
Brazilian Journal of Psychiatry. Publicado em: 2022
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5. Clarifying the theoretical basis of the global geometric imperfection analysis (out-of-plumb columns)
Abstract The concrete structures present several geometric deviations, some of them considered indirectly in the safety factors of the design. However, the imperfections of the element axes, especially columns, should be explicitly considered in the structural analysis because they have great influence over the building stability. The NBR 6118:2014, Brazilia
REM, Int. Eng. J.. Publicado em: 2021-06
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6. Ancestral fermented indigenous beverages from South America made from cassava (Manihot esculenta)
Abstract Fermented indigenous foods are of global interest, in the case of South America, fermented beverages made from cassava (Manihot esculenta) are a vital component in the daily life and diet of indigenous groups. Traditional fermentation methods promote the microbiota of beverages and consequently the generation of secondary metabolites during the spon
Food Sci. Technol. Publicado em: 2021-06
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7. Synthesis, Spectroscopic Characterization, DFT Calculations and Preliminary Antifungal Activity of New Piperine Derivatives
Four new piperine derivatives, PC1-PC4, were synthesized, and their structures were fully characterized by infrared (IR) and 1H and 13C nuclear magnetic resonance (NMR) spectroscopies. Quantum chemical calculations were performed using density functional theory (DFT) with the B3LYP-D3/6-31G(d,p) and 6-311+G(2d,p) basis sets. Electronic properties, such as th
J. Braz. Chem. Soc.. Publicado em: 2021-03
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8. On equilibria stability in an epidemiological SIR model with recovery-dependent infection rate
RESUMO Neste artigo é considerado um modelo epidemiológico SIR cuja taxa de infeção depende da população removida. São estabelecidas condições suficientes para a existência, unicidade e estabilidade (local e global) de equilíbrios endêmicos e é considerada também a estabilidade das soluções de equilíbrio livres da infecção. É mostrado que
TEMA (São Carlos). Publicado em: 2020-12
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9. Open stope stability assessment through artificial intelligence
Abstract Underground mining is a set of methods that allows the extraction of ore in depth, ensuring sustainability and economic viability. One of the problems that arise in underground mine operations is open stope stability. The method for assessing stabil ity of open stopes is the stability graph proposed by Mathews et al. (1981). It is possible to estima
REM, Int. Eng. J.. Publicado em: 2020-09
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10. Argentina and the global capital roller coaster of the 1990s
RESUMO Este ensaio analisa o experimento argentino “currency board” durante a década de 1990, tanto do ponto de vista teórico quanto histórico. Descobriu que as tentativas anteriores de controlar a inflação com uma taxa de câmbio quase fixa em um ambiente altamente politizado deveriam ter sido uma lição a ser ouvida. Ao detalhar as várias defici
Brazil. J. Polit. Econ.. Publicado em: 20/12/2019
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11. Remoção de algas em um sistema de biofiltros submersos
RESUMO Esta pesquisa propôs o desenvolvimento de um sistema de biofiltros submersos (SBS), modificados com base na configuração de filtros de pedra, visando ao pós-tratamento do efluente de lagoas de estabilização, inicialmente para a remoção de algas. Foram implantados 2 conjuntos de biofiltros submersos para captar esgoto tratado de duas diferentes
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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12. Recessions and a changing theoretical basis of the recoveries: a view from the state-corporation hegemonic stability theory
RESUMO Este artigo analisa as razões das recessões mundiais em 1974-1975, 1980-1982 e 2008-2009 e métodos para melhorar a economia baseando-se em várias teorias da macroeconomia e de acordo com a visão da teoria da estabilidade hegemônica da corporação estatal. Várias razões práticas das três recessões modernas (isto é, os choques do petróleo
Brazil. J. Polit. Econ.. Publicado em: 17/10/2019