Phase Coexistence
Mostrando 1-12 de 84 artigos, teses e dissertações.
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1. Repercussões do Diagnóstico de Síndrome de Down na Perspectiva Paterna
Resumo O presente estudo objetivou conhecer como os pais lidaram com a notícia do diagnóstico de síndrome de Down à época do nascimento do filho e, posteriormente, na fase adulta desse. Para alcançá-los, nessa pesquisa de abordagem qualitativa, os pais responderam a uma entrevista de dados sociodemográficos da família e à Entrevista sobre o Lugar d
Psicol. cienc. prof.. Publicado em: 28/11/2019
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2. Effects of artepillin C on model membranes displaying liquid immiscibility
It has been hypothesized that the therapeutic effects of artepillin C, a natural compound derived from Brazilian green propolis, are likely related to its partition in the lipid bilayer component of biological membranes. To test this hypothesis, we investigated the effects of the major compound of green propolis, artepillin C, on model membranes (small and g
Braz J Med Biol Res. Publicado em: 25/03/2019
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3. The Modification of (Nd0.5Ta0.5)4+ Complex-Ions on Structure and Electrical Properties of Bi0.5Na0.5TiO3-BaTiO3 Ceramics
The (Bi0.5Na0.5)0.94Ba0.06Ti1-x (Nd0.5Ta0.5) xO3 (0.01≤x≤0.05) lead-free ceramics (BNBT-xNT) used (Nd0.5Ta0.5)4+ complex-ions to modify its structure and electrical properties. The BNBT-xNT ceramics exhibit the coexistence of tetragonal and rhombohedral phase. The (Nd0.5Ta0.5)4+ complex-ions prohibit grain growth, and its average grain size decreases fro
Mat. Res.. Publicado em: 14/03/2019
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4. Mixed Electrical Conduction of Calcium Aluminates Synthesized by Polymeric Precursors
A study of the electrical transport properties of calcium aluminate (CA) with coexisting C3A and C12A7 phases was carried out. In this work, powders resulting from synthesis based on the polymer precursor method. The resulting product was characterized by means of XRD, Raman, and UV-visible analysis to obtain the optical BG and by EIS. From the XRD and Raman
Mat. Res.. Publicado em: 23/11/2018
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5. CONSTRUÇÃO DA CURVA DE EQUILÍBRIO LÍQUIDO-VAPOR USANDO UMA EQUAÇÃO DE ESTADO CÚBICA: USO DO EXCEL NO ENSINO DE FÍSICO-QUÍMICA
Cubic equations of state are able to predict the liquid-vapour coexistence curve of volatile substances. However, this property is rarely used to teach Physical Chemistry because solving the resulting equations require numerical technics and many mathematical operations. In this report was shown how the interactive method for finding the root of an equation
Quím. Nova. Publicado em: 2016-06
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6. Effect of Weathering and Accelerated Photoaging on PET/PC (80/20 wt/wt%) Melt Extruded Blend
In this study we investigated the natural weathering of a catalyzed blend of poly(ethylene terephthalate)/polycarbonate PET/PC (80/20wt/wt%). The results were compared to the accelerated photoaging tests. The specimens were characterized by wide angle X-ray diffraction (WAXD), optical microscopy (OM), thermogravimetry (TG/DTG), medium infrared spectroscopy (
Mat. Res.. Publicado em: 25/08/2015
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7. Influence of salts on the coexistence curve and protein partitioning in nonionic aqueous two-phase micellar systems
Aqueous two-phase micellar systems (ATPMS) can be exploited in separation science for the extraction/purification of desired biomolecules. Prior to phase separation the surfactant solution reaches a cloud point temperature, which is influenced by the presence of electrolytes. In this work, we provide an investigation on the cloud point behavior of the nonion
Braz. J. Chem. Eng.. Publicado em: 2014-12
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8. CARACTERIZACÃO DAS PROPRIEDADES ESTRUTURAIS E MAGNÉTICAS DA SÉRIE SmFe1xMnxO3. / CHARACTERIZATION OF THE PROPERTIES STRUCTURAL MAGNETIC AND SERIES SmFe1 xMnxO3.
In this work we synthesized sample of the series SmFe1xMnxO3 , in which 1 x 0 whit variation of x = 0:1. Our main objective was the structural and magnetic characterization of the compounds. First, to the best of our knowledge, these samples were obtained by the combustion reaction method, with which we achieve success in obtaining unique polycrystalline pha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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9. DANOS DO PERCEVEJO-BARRIGA-VERDE Dichelops melacanthus (DALLAS, 1851) (HEMIPTERA: PENTATOMIDAE) NA CULTURA DO MILHO / GREEN BELLY STINK BUG Dichelops melacanthus (DALLAS, 1851) (HEMIPTERA: PENTATOMIDAE) DAMAGES IN MAIZE CROP
The research objective was to evaluate the damage caused by D. melacanthus in the initial phase of the maize crop. Two field trials were conducted in Rondonópolis, Mato Grosso, and two greenhouse trials occurred in Santa Maria, Rio Grande do Sul. In all experiments artificial infestation of cages was done using laboratory reared stink bugs. In all experimen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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10. Study of the photoluminescent properties of MgTiO3 powder and thin films obtained by the polimeric precursor method / Estudo das propriedades fotoluminescentes de pós e filmes finos de MgTiO3 obtidos pelo método dos precursores poliméricos
In this study, MgTiO3 (MTO) powders and thin films that crystallize in a perovskite ilmenite crystalline structure were obtained and characterized. MTO were synthesized by the polymeric precursor method (PPM), which allows obtaining structurally ordered and disordered structures. In addiction, the photoluminescent properties were investigated as a function o
Publicado em: 2011
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11. Deformation and fracture of an alpha/beta titanium alloy
Titanium alloys are used in the aero-spatial, energy and biomaterial industries among others and exhibit high specific strength and fracture toughness. Their mechanical properties show a strong dependence on the microstructure, especially on the size and morphology of the constituent phases. An experimental evaluation was done to a better understanding of th
Matéria (Rio de Janeiro). Publicado em: 2010
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12. Dinâmica de populações: modelo predador-presa estocástico e difusivo em um reticulado / Dynamic population: Predator-prey stochastic and difusive model on a lattice
We have studied the predator-prey stochastic model defined on a lattice with first neighbour interactions. Each site of the lattice may assume one of three states: vacant, occupied by prey and occupied by predator. We have introduced a parameter that controls the possibility of difusion among sites. The model shows an oscilating phase, a non-oscilating phase
Publicado em: 2009