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Penetração de cloretos em concretos compostos com cimento Portland branco e escória de alto forno, ativados quimicamente
(Universidade Federal de Santa MariaBREngenharia CivilUFSMPrograma de Pós-Graduação em Engenharia Civil, 2008-02-12)
The consumption of white Portland cement (WPC), in structural concretes, has been growing lately. Thus, targeting diffuse its use, and confirm its quality and durability as structural cement, this work has the aimed to ...
Aplicação do psyllium (Plantago ovata) como substituto da pectina em geleia de abacaxi
(Universidade Tecnológica Federal do ParanáMedianeiraBrasilEngenharia de AlimentosUTFPR, 2021-05-07)
The production of jelly is a method of preserving fruits by the use of heat, being characterized by its low concentration of moisture and high content of solids. Allied to this is the alternative of ...
Producción y caracterización optoeléctrica de películas delgadas de ZnSe preparadas por evaporación en alto vacío
(2018-06-28)
En este trabajo se depositaron muestras de Seleniuro de Zinc (ZnSe) sobre vidrio, utilizando la técnica de evaporación en alto vacío. Las muestras fueron caracterizadas optoeléctricamente con medidas de transmitancia y ...
Time-dependent mass-transfer behaviour under laminar and turbulent flow conditions in rotating electrodes: A CFD study with analytical and experimental validation
(Pergamon-Elsevier Science Ltd, 2019-07)
Results of numerical calculations and their comparison with analytical expressions or experimental data under laminar and turbulent flow conditions are reported. It is predicted the transient and steady-state behaviour of ...
Hydrogenated amorphous silicon characterization from steady state photoconductive measurements
(IOP Publishing, 2019-03)
We propose to use steady state measurements and a teaching-learning-based optimization (TLBO) algorithm to get the complete set of material transport parameters of disordered semiconductors, taking undoped hydrogenated ...
Thermoelectric cooling properties of a quantum Hall Corbino device
(American Physical Society, 2021-03)
We analyze the thermoelectric cooling properties of a Corbino device in the quantum Hall regime on the basis of experimental data of electrical conductance. We focus on the cooling power and the coefficient of performance ...
Addressing the surface coverage of Au nano-agglomerates and the electrochemical properties of modified carbon paste electrodes: Experimental and theoretical studies on ascorbic acid oxidation
(Elsevier Science, 2021-04)
This article shows the formation of Au nano-agglomerates when increasing amounts of gold nanoparticles (AuNP) are incorporated into carbon paste electrodes. The surface coverage by this agglomerates is related to the ...
Modelagem da qualidade da água no trecho de vazão reduzida (TVR) devido à instalação do aproveitamento hidrelétrico da Capim Branco I no Rio Araguari, MG
(Universidade Federal de Minas GeraisUFMG, 2007-04-13)
The Capim Branco I hydroelectric is located in Araguari river, in the Brazilian state of Minas Gerais. In this hydroelectric, there is the need of keeping a minimum flow in the former river bed, because the dam position ...
Cephalosporin C production by immobilized Cephalosporium acremonium cells in a repeated batch tower bioreactor
(Wiley-Blackwell, 2004-01-05)
The industrial production of antibiotics with filamentous fungi is usually carried out in conventional aerated and agitated tank fermentors. Highly viscous non-Newtonian broths are produced and a compromise must be found ...
Modelagem numérica de escoamento em padrão anular com transferência de calor e massa
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia MecânicaTecnologia de Materiais; Projetos Mecânicos; Termociências, 2011-02-18)
Annular flow is the prevailing pattern in transport and energy conversion systems and
therefore, one of the most important patterns in multiphase flow in ducts. The correct
prediction of the pressure gradient and heat ...