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Mostrando 13-24 de 1589 artigos, teses e dissertações.
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13. Evaluation of mortars produced with Baosteel slag short flow (BSSF) steel slag as fine aggregate
Abstract The objective was to evaluate the influence of Baosteel slag short flow (BSSF) steel slag, a byproduct of a Brazilian steel mill, as a fine aggregate on the properties of fresh state and on the compressive strength of mortars. The experimental work was to characterize the BSSF steel slag and to produce simple mortars (only cement) and mixed mortars
Cerâmica. Publicado em: 2021-03
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14. Utilization of ferronickel slag in hot mix asphalt
Abstract The growing concern in minimizing the disorderly disposal of waste in nature has been influencing measures that seek to give new environmentally sustainable and economically viable purposes for these materials. The use of steel slag aggregate in road paving emerges as an alternative for reducing the storage of this material in industrial yards, as w
REM, Int. Eng. J.. Publicado em: 2021-01
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15. Coronary Artery Bypass Graft During the COVID-19 Pandemic
Abstract Since the beginning of the coronavirus disease (COVID-19) pandemic, in March 2020, the number of people infected with COVID-19 worldwide increases continuously. Brazil is being followed with great concern in the international media, as it can, very soon, be the epicenter of the pandemic. Initial surgical data suggest that patients who acquire COVID-
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-12
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16. Intravascular histiocytosis: case report of a rare disease probably associated with silicone breast implant,
Abstract Intravascular histiocytosis is a rare condition characterized by the aggregate of histiocytes within dilated dermal vessels. The diagnosis is mainly histophatological and immunohistochemical. We describe a case of a 55 year-old female patient presenting erythematous/purple patches on the breasts, back and limbs. She previously presented ductal carci
An. Bras. Dermatol.. Publicado em: 2020-06
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17. Polymicrobial Leakage and Retention of MTA and Portland Cement in a Model of Apexification
Abstract Objective: To evaluate the sealing capacity and retention of apical barriers made with mineral trioxide aggregate (MTA) and Portland cement (PC). Material and Methods: Fifty-six bovine incisors were sectioned 8 mm above and 12 mm below the cement-enamel junction. The root canal was enlarged with a diamond drill to create a standard 2.5 mm diameter
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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18. Post-elastic Deformation Characteristics of Hybrid Fibre Reinforced Concrete Composites
Abstract The present study was focused on evaluating the strength and failure properties of hybrid micro-fibre concretes containing micro brass and steel fibre additions. Experimental tests were conducted on different hybrid fibre concretes containing aligned fibres in the direction of beam axis and the relative mechanical performance was compared to randoml
Lat. Am. j. solids struct.. Publicado em: 10/01/2020
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19. Effects of MTA and Brazilian propolis on the biological properties of dental pulp cells
Abstract: The aim of this study was to evaluate the effect of mineral trioxide aggregate (MTA) and Brazilian propolis on the cell viability, mineralization, anti-inflammatory ability, and migration of human dental pulp cells (hDPCs). The cell viability was evaluated with CCK-8 kit after 1, 5, 7, and 9 days. The deposition of calcified matrix and the expressi
Braz. oral res.. Publicado em: 10/01/2020
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20. Effect of a novel bioceramic root canal sealer on the angiogenesis-enhancing potential of assorted human odontogenic stem cells compared with principal tricalcium silicate-based cements
Abstract Objective: This study evaluated the angiogenesis-enhancing potential of a tricalcium silicate-based mineral trioxide aggregate (ProRoot MTA), Biodentine, and a novel bioceramic root canal sealer (Well-Root ST) in human dental pulp stem cells (hDPSCs), human periodontal ligament stem cells (hPLSCs), and human tooth germ stem cells (hTGSCs). Methodo
J. Appl. Oral Sci.. Publicado em: 10/01/2020
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21. Experimental investigation on shear resistance of self-consolidating concrete beams
Resumo O concreto autoadensável se destaca pela alta fluidez e estabilidade, sendo estas propriedades obtidas com a redução da granulometria e volume de agregado graúdo da mistura, adição de materiais finos e a utilização de aditivos superplastificantes e modificadores de viscosidade. Um programa experimental foi realizado para avaliar a influência
Rev. IBRACON Estrut. Mater.. Publicado em: 13/12/2019
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22. Conhecer, acreditar e participar? A avaliação institucional na percepção dos discentes
O artigo tem por objetivo identificar qual a percepção dos discentes do curso de Administração da Universidade Federal de Santa Maria (UFSM) sobre a avaliação institucional. Visando atingir o objetivo proposto, optou-se por realizar um estudo quantitativo de cunho descritivo, através de uma survey. A amostra do presente estudo se caracteriza como não
Avaliação (Campinas). Publicado em: 09/12/2019
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23. Medical centers location and specialists’ allocation: a healthcare planning case study
Abstract Paper aims To set the locations of new medical centers to meet the population’s secondary care needs, the additional number of specialists, equipment, and an installation sequence at municipalities. Originality We developed descriptive cost functions models and adopted aggregate data from official sources to set parameters of an integrated MILP
Prod.. Publicado em: 02/12/2019
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24. Construção e Interpretação de Diagramas de Extremos e Quartis por Alunos Portugueses do 9.° ano de Escolaridade
Resumo Este estudo debruça-se sobre as dificuldades de alunos portugueses do 9.° ano de escolaridade na construção e interpretação de diagramas de extremos e quartis (DEQ). O estudo tem por base as respostas dadas por 93 alunos do 9.° ano a duas questões sobre DEQ num teste de diagnóstico escrito. Examinando as configurações dos objetos e processo
Bolema. Publicado em: 02/12/2019