Gap
Mostrando 1-12 de 3459 artigos, teses e dissertações.
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1. Propriedades estruturais, eletrônicas e termodinâmicas de ligas semicondutoras baseadas em tálio
Apresentamos um estudo teórico de ligas semicondutoras baseadas em tálio, na estrutura cúbica zincblende, com a possibilidade de serem um alternativa viável para os dispositivos optoeletrônicos que atuam na região do comprimento de onda do infravermelho. A metodologia empregada foi a combinação de cálculos de primeiros princípios de estrutura eletr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2028
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2. Synthesis of TiO2/ZnO photoanodes on FTO conductive glass for photovoltaic applications
Abstract For oxide semiconductors for application in dye-sensitized solar cells (DSSCs), titanium dioxide conjugated with zinc oxide thin films was synthesized and characterized. The UV (ultraviolet) spectrum characterization showed a peak of absorbance at around 355 nm, with a band gap of 3.25 eV and reflectance around 85%. Such characteristics allowed the
Cerâmica. Publicado em: 2023
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3. Study of rhombohedral tricalcium phosphate in hexagonal crystal structure family on the sample prepared by the sol-gel route and the effect of calcination temperature
Abstract The effect of the calcination temperature at 800 and 1000 °C on the stable formation of the tricalcium phosphate with rhombohedral structure in the system of the hexagonal crystal family was determined, while its precursor was made from limestone obtained from nature in the Lumajang district, Indonesia. The rhombohedral tricalcium phosphate samples
Cerâmica. Publicado em: 2023
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4. Persistência e Volatilidade do Gap da Inflação
Resumo Neste artigo, estimamos uma tendência para a inflação brasileira com a finalidade de apresentar uma medida alternativa de inflação de longo prazo e trazer um novo complemento aos tradicionais núcleos de inflação. Além da análise econômica do comportamento dessa estimativa, aplica-se uma avaliação de capacidade preditiva em pseudo tempo re
Estudos Econômicos (São Paulo). Publicado em: 2022
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5. Changes in gap junction proteins Connexin30.2 and Connexin40 expression in the sinoatrial node of rats with dexmedetomidine-induced sinus bradycardia
Abstract Background Dexmedetomidine (Dex) is widely used, and its most common side effect is bradycardia. The complete mechanism through which Dex induces bradycardia has not been elucidated. This research investigates the expression of gap junction proteins Connexin30.2 (Cx30.2) and Connexin40 (Cx40) within the sinoatrial node of rats with Dex-induced sinu
Brazilian Journal of Anesthesiology. Publicado em: 2022
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6. Science Gender Gap: Are We in theRight Path?
International Journal of Cardiovascular Sciences. Publicado em: 2022
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7. Use of nasal mucosa graft in tympanoplasty
Resumo Introdução Técnicas de timpanoplastia com diferentes tipos de enxerto têm sido usadas para fechar perfurações timpânicas desde o século XIX. A cartilagem tragal e a fáscia temporal são os tipos de enxerto mais usados, com resultados funcionais e morfológicos semelhantes na maioria dos casos. Embora ainda com poucas evidências publicadas,
Brazilian Journal of Otorhinolaryngology. Publicado em: 2022
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8. Métodos de Análise de Decisão Multicritério para Seleção de Padrões de Corte
RESUMO Em indústrias de manufatura, um dos processos de produção consiste em cortar grandes objetos em peças menores. Em pesquisa operacional, o estudo desse processo é conhecido como o problema de corte de estoque (PCE) e, devido à sua dificuldade de resolução, métodos heurísticos vêm sendo desenvolvidos pelos pesquisadores da área. Neste trabal
Trends in Computational and Applied Mathematics. Publicado em: 2022
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9. Reconstruction of the Long Process of the Incus by Use of Glass Ionomer Cement: Our Experience
Abstract Introduction Chronic suppurative otitis media is one of the most common causes of reversible conductive hearing loss which can lead to necrosis of the ossicles. The incus, especially its long process, is the most common ossicle affected. Objectives The present study aims to assess the use of glass ionomer cement for the reconstruction of the long
International Archives of Otorhinolaryngology. Publicado em: 2022
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10. The BigFLUX Magnetic Matrix Technology
Abstract The Magnetic separation of ultra-fine ore particles has always posed a challenge to the JONES/WHIMS process. Despite many advances in this technology, no effective improvement has been made to its core component: The Magnetic Matrix. The current approach to separate ultra-fine particles teaches that the gap of the matrix and its teeth size must be s
REM - International Engineering Journal. Publicado em: 2022
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11. Broadband Antennas Based on the Double Moebius Strip
Abstract The family of new antenna designs based on the double Moebius strip principle is proposed in this article. Three possible options of the power supply port location had been reviewed in this respect: the cut external strip with the signal port located directly in the cut area is used; the continuous rings without discontinuities are applied, with the
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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12. Morally transgressive companies and sustainable guidelines: seeking redemption or abusing trust?
Abstract Purpose This study aims to evaluate the impact of a sustainable production action on consumer trust and purchase intention by a company involved in moral transgression and also analyze the effect on consumer trust and purchase intention if a company, after green marketing, is identified as greenwashing spreader. Design/methodology/approach This qu
RAUSP Management Journal. Publicado em: 2022