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Mostrando 1-12 de 847 artigos, teses e dissertações.
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1. Evaluation of the Structural Integrity of Layered Double Hydroxides and Mesoporous Silica During the Preparation of Heterostructures
Heterostructures constructed with mesoporous silica and layered double hydroxides are interesting for catalytic and drug delivery applications. Different arrangements between these phases are possible. In this study, we prepared heterostructures by embedding layered double hydroxides phases [M4Al2(OH)12](CO3) (M = Mg2+ or Zn2+) within the MCM41 mesoporous si
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Numerical analysis of collapse modes in optimized design of alveolar Steel-concrete composite beams via genetic algorithms
Abstract The objective of this study is to present the formulation and applications of the optimization problem of steel-concrete composite alveolar beams. In addition to presenting the formulation, a comparative analysis of the predominant collapse modes is performed numerically via the finite element method. The optimization program was developed with the
REM, Int. Eng. J.. Publicado em: 2021-06
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3. Impact of lockdown on bed occupancy rate in a referral hospital during the COVID-19 pandemic in northeast Brazil
Abstract Coronaviruses are known to be responsible for infections in humans since the 1960s and have accounted for epidemics in recent human history. More recently, in 2019, a disease caused by a new coronavirus appeared in China, in the province of Wuhan, with a characteristic of greater infectivity, called COVID-19, which has caused a new world pandemic. C
Braz J Infect Dis. Publicado em: 2020-10
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4. Clinical simulation strategies for knowledge integration relating to initial critical recognition and management of COVID-19 for use within continuing education and health-related academia in Brazil: a descriptive study
ABSTRACT BACKGROUND: The COVID-19 pandemic has led to an immense need to develop training on case recognition and management, with a focus on patients’ and health professionals’ safety at several levels of healthcare settings in Brazil. Different simulation strategies can be included in the diverse clinical care phases for these patients. OBJECTIVE:
Sao Paulo Med. J.. Publicado em: 2020-10
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5. Seismic signature of mudflow tremor resulted from Brumadinho (Brazil) tailings dam failure
Abstract Mudflow is often associated with seismic activities. The present study applied a seismic based detection of the surface waves generated by the mudflow of Brumadinho dam collapse using records of Brazilian Seismographic Network. The signal envelope and time-frequency spectrograms of the mudflow signals were used in the analysis. As a result, the mudf
REM, Int. Eng. J.. Publicado em: 2020-09
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6. Lateral-Expansion Pharyngoplasty: Combined Technique for the Treatment of Obstructive Sleep Apnea Syndrome
Abstract Introduction Obstructive sleep apnea syndrome (OSAS) is a multifactorial disease characterized by episodes of partial or complete collapse during sleep of different regions of the upper airway. Surgery for OSAS evolved with the introduction of different techniques, considering new surgical concept of reconstruction of the upper airway. Objective
Int. Arch. Otorhinolaryngol.. Publicado em: 2020-03
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7. A passagem do dois ao zero: dualidade e desintegração no pensamento dialético brasileiro (Paulo Arantes, leitor de Roberto Schwarz)
RESUMO Buscamos explorar osdesdobramentos da intuição básica de RobertoSchwarz em seu ensaio “As ideias fora do lugar”na obra do filósofo Paulo Arantes. O ponto devista da periferia do capitalismo (que superaa si mesmo enquanto ponto de vista) nãoapenas fornece uma visada privilegiada paraa compreensão do funcionamento ideológicodas sociedades que
Rev. Inst. Estud. Bras.. Publicado em: 10/01/2020
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8. Indicações e resultados para o uso expandido da oclusão ressuscitativa por balão endovascular da aorta - REBOA.
RESUMO A oclusão ressuscitativa por balão endovascular da aorta (REBOA) é utilizada para controlar hemorragias não compressíveis do tronco como uma opção menos invasiva e com menos distúrbios fisiológicos quando comparado à toracotomia de emergência com clampeamento da aorta. Isso permite a melhora dos parâmetros hemodinâmicos até que a cirurgi
Rev. Col. Bras. Cir.. Publicado em: 20/12/2019
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9. O debate inesgotável: causas sociais e biológicas do colapso demográfico de populações ameríndias no século XVI
Resumo No século XX, estimativas populacionais para o hemisfério ocidental, as Américas, sobre o período que antecedeu à chegada de Colombo variaram entre dez milhões até mais de cem milhões. Essa grande discrepância é fundamental para avaliar o peso das epidemias na brusca redução demográfica que se seguiu. O fato é que houve um colapso demogr
Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.. Publicado em: 02/12/2019
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10. THE PERCEPTION OF ADULT AND YOUNG ADULT STUDENTS ON THE RIVER RIO DOCE - CARTOGRAPHIES OF FEAR
Resumo O artigo se insere no conjunto de debates cuja preocupação são os efeitos do desastre sociotécnico provocado pelo rompimento da barragem de Fundão, ocorrido no ano de 2015, que afetou o rio Doce, e apresenta resultados de um estudo que buscou compreender as percepções de estudantes da Educação de Pessoas Jovens e Adultas (EJA) sobre o rio. O
Ambient. soc.. Publicado em: 02/12/2019
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11. Technique, power, transformation: views from Brazilian anthropology
Resumo Este texto apresenta as perspectivas contemporâneas da antropologia da técnica, suas especificidades teórico-metodológicas e a forma como ela se expressa no Brasil atualmente, através do conjunto de etnografias que compõem este dossiê. Abordando diferentes tipos de transformações, estes artigos evocam questões sobre a relação entre técnic
Vibrant, Virtual Braz. Anthr.. Publicado em: 28/11/2019
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12. Ground motions for FEMA P-695 application in subduction zones
Abstract The FEMA P-695 report presents a methodology for the rational quantification of seismic performance factors for use in seismic design. Despite the fact that the methodology is comprehensive and covers a wide range of possible applications, it only provides ground motion sets recorded from shallow crustal earthquakes. Therefore, this paper presents a
Lat. Am. j. solids struct.. Publicado em: 25/11/2019