Zeta Function
Mostrando 1-12 de 77 artigos, teses e dissertações.
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1. Fetal thymus in growth-restricted fetuses due to placental insufficiency
SUMMARY OBJECTIVE: The aim of this study was to assess fetal thymus size by ultrasound in growth-restricted fetuses due to placental insufficiency and compare to high-risk and low-risk pregnancy fetuses with normal placental function. METHODS: This is a nested case-control study of pregnant women followed up at a university hospital (July 2012 to July 2013
Revista da Associação Médica Brasileira. Publicado em: 2023
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2. Adhesion evaluation of the Rhodococcus opacus strain on an apatite surface
Abstract Adsorption of microorganisms and/or their different components onto a mineral surface would modify the surface characteristics of the mineral. Thus, this investigation evaluated the adsorption capacity of the Rhodococcus opacus strain onto an apatite surface. Zeta potential and contact angle measurements of the mineral showed dislocations of the val
REM, Int. Eng. J.. Publicado em: 2021-09
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3. Síntese e caracterização de nanopartículas de Fe3O4@SiO2
RESUMO Neste trabalho foi estudada a síntese e caracterização das nanopartículas magnéticas de magnetita (Fe3O4) através da co-precipitação e, sua posterior funcionalização pela sílica (SiO2), realizada via metodologia sol-gel. A caracterização das nanopartículas foi feita por difratometria de raios X (DRX), microscopia eletrônica de transmiss
Matéria (Rio J.). Publicado em: 25/11/2019
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4. Chitosan and gum arabic nanoparticles for heavy metal adsorption
Abstract Chitosan (CT) is a polysaccharide with the ability to adsorb metals on its surface. In this work, CT-based nanoparticles (NPs) are produced by complex formation with gum arabic (GA) to increase their adsorbent potential for removal of heavy metals in aqueous medium. Adsorption efficiency is evaluated as a function of NP composition and polysaccharid
Polímeros. Publicado em: 10/07/2018
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5. T cell receptor signaling pathway is overexpressed in CD4 + T cells from HAM/TSP individuals
ABSTRACT Human T-lymphotropic virus type 1 (HTLV-1) is a human retrovirus related to the chronic neuroinflammatory disease HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). CD4+ T cells activation appears to play a key role on HTLV-1 infection. Here we investigated the expression of genes associated to T cell activation CD3e molecule, epsi
Braz J Infect Dis. Publicado em: 2015-12
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6. Otimização reológica de suspensões aquosas de óxido de ferro (III)
In this work the dispersion of iron oxide III particles in aqueous media was studied. To achieve the maximum solid content zeta potential measurements were carried as a function of pH. The influences of two different types of polyacrylates as dispersants were investigated. Suspensions were produced by varying solids concentration up to 30 vol.%. The results
Matéria (Rio J.). Publicado em: 2015-03
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7. Succinato de ródio (II): síntese, caracterização e adsorção em nanopartículas de maghemita / Rhodium (II) succinate: synthesis, caracterization and adsorption on maghemite nanoparticles
In this work it was described the synthesis and characterization of rhodium(II) succinate complex unpublished and adsorption study in maghemite nanoparticles. The rhodium(II) succinate was synthesized from a precursor rhodium(II) carboxylate, rhodium(II) trifluoracetate with a yield of 48.2%. The complex has become completely soluble in aqueous medium only w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2012
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8. Expressão e função de CXCR7 em sídromes mielodisplásicas e leucemias / Expression and function of CXCR7 in myelodysplastic syndromes and leukemias
A medula óssea é constituída por microambientes específicos denominados "nichos". O fator SDF-1 (Stromal derived factor-1) foi identificado como um importante fator quimioatrativo produzido por células estromais da medula óssea. Sua ação sobre seu receptor CXCR4 desempenha função primordial na migração, retenção e desenvolvimento dos progenitor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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9. Torção Analítica e extensões para o Teorema de Cheeger Müller. / Analytic Torsion and extensions for the Cheeger Müller theorem
Estudamos a Torção Analítica para variedades com bordo e ainda com singuaridades do tipo cônico, mais especificamente, para um cone métrico limitado, com o propósito de investigar a extensão natural do Teorema de Cheeger Müller para tais espaços. Começamos determinando a Torção Analítica do disco e de variedades com o bordo totalmente geodésico
Publicado em: 2009
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10. Carreador lipÃdico nanoestruturado à base de cera de carnaÃba: desenvolvimento, caracterizaÃÃo e uso na encapsulaÃÃo de benzofenona-3
Solid lipid nanoparticles made of pure lipids (SLN) or a mixture of solid and liquid lipids (NLC) have been proposed as a category of carriers for cosmetic ingredients of current and growing interest due to a number of advantages compared to conventional formulations. Natural waxes are considered lipid matrices of great potential for the production of topica
Publicado em: 2009
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11. Um Procedimento analítico para o cálculo das integrais bi-eletrônicas em métodos de mecânica quântica molecular
The present work develops an alternative methodology (q-Integral method) to evaluate the two-electron integrals which appear in ab initio molecular quantum mechanical calculations. The q-Integral method is based on the q-Exponential function, which comes from the Tsallis non-extensive statistics mechanics. The advantage of this procedure is that the CPU time
Publicado em: 2008
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12. Estudos de sorção de um corante aniônico modelo em partículas de quitosana reticulada
Textile activity results in effluents with a variety of dyes. Among the several processes for dye-uptaking from these wastewaters, sorption is one of the most effective methods, chitosan being a very promising alternative for this end. The sorption of Methyl Orange by chitosan crosslinked particles was approached using equilibrium and kinetic analyses
Publicado em: 2007