Sphericity
Mostrando 13-24 de 47 artigos, teses e dissertações.
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13. Use of an Artificial Neural Network in determination of iron ore pellet bed permeability
Abstract The thermal processing of iron ore pellets in pelletizing plants is a decisive stage regarding final product quality and knowledge of its characteristics has a fundamental importance in its process optimization. This study evaluated the variable sensitivity involved in pellet bed formations and their permeability using the artificial neural networks
REM, Int. Eng. J.. Publicado em: 2017-06
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14. Optimizing the Water-Oil Emulsification Process for Developing CPC Microspheres
Spherical calcium phosphate cement carriers were synthesized by water/oil emulsion. A 23 factorial design was employed in order to optimize the size and form of the microspheres. Stirring speed, liquid-to-powder ratio and cement paste-to-oil ratio were varied in two different levels and the response variable was the microsphere's sphericity. The results show
Mat. Res.. Publicado em: 10/10/2016
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15. TRANSITION PHENOMENON INVESTIGATION BETWEEN DIFFERENT FLOW REGIMES IN A ROTARY DRUM
Abstract Rotary drums can show different granular flow regimes each one with its own specific flow behavior, which increase the complexity in their study. The way particles move inside the rotary drum is directly related to the mass and energy transfer rates, and consequently to the process performance. Thus, an experimental investigation regarding the trans
Braz. J. Chem. Eng.. Publicado em: 2016-09
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16. Segmentation of the buffalo meat consumer market in Belém, Pará, Brazil
ABSTRACT The objective of this study was to identify different market segments for buffalo meat with target groups defined in the city of Belém, Pará, Brazil. Paired samples of beef and buffalo meat were given to 447 volunteers, and a sensory analysis of the products was conducted. After the tasting, a questionnaire was administered to obtain demographic (
R. Bras. Zootec.. Publicado em: 2016-06
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17. Linkage disequilibrium, SNP frequency change due to selection, and association mapping in popcorn chromosome regions containing QTLs for quality traits
Abstract The objectives of this study were to assess linkage disequilibrium (LD) and selection-induced changes in single nucleotide polymorphism (SNP) frequency, and to perform association mapping in popcorn chromosome regions containing quantitative trait loci (QTLs) for quality traits. Seven tropical and two temperate popcorn populations were genotyped for
Genet. Mol. Biol.. Publicado em: 2016-03
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18. Validación del cuestionario de medida del conocimiento del paciente sobre su medicamento adaptado al portugués
The scope of this study was the validation of a cross-culturally adapted questionnaire into Portuguese in five community pharmacies in Portugal. The discriminatory power of items, content and construct validity and factor analysis of the main components and their reliability and stability were determined. A high degree of semantic equivalence between the ori
Ciênc. saúde coletiva. Publicado em: 2014-04
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19. On the prediction of pickup and saltation velocities in pneumatic conveying
This paper presents a comparative study of the critical pickup and saltation velocities of particles in horizontal pipelines for pneumatic conveying design. A comparative study is performed using different existing correlations in the literature for the determination of the minimum velocity of transport as a function of the particle and pipe diameter, partic
Braz. J. Chem. Eng.. Publicado em: 2014-03
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20. Modelagem da velocidade crítica de transporte de polpas minerais contendo partículas grossas. / Modeling critical velocity of transport for mineral slurries with coarse particles.
O dimensionamento de sistemas de transporte hidráulico de polpas minerais exige especial atenção à medida que partículas grossas apresentam um comportamento de sedimentação no interior dos tubos. Dentro desta situação, a velocidade de transporte da polpa mineral deve ter magnitude suficiente para suspender e transportar os sólidos, evitando que os
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/05/2012
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21. Caracterização de biomassas brasileiras para fins de aproveitamento energético / Characterization of brazilian biomasses for energy recovery
New energetic alternatives have been the subject of discussion about conservation of natural resources. Such discourses are based mainly on reducing emissions of greenhouse gases and other pollutants, caused mostly by the use of fossil fuels, major source of energy today. In view of the applicability of biomass as energy input, this paper presents an experim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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22. Caracterização e separabilidade de agregados miúdos produzidos a partir de resíduos de construção e demolição. / Technological characterization and separability studies on fine aggregates produced from construction and demolition waste.
The current demand for recycling on construction is due to the increasing consumption of aggregates, the exhaustion of deposits close to large cities as well as the ban on inert materials dumping in landfills and the rising cost of its disposal. Moreover, with the remarkable increasing on construction activities in many countries, the management of Construct
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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23. AdaptaÃÃo e validaÃÃo de protocolo para prevenÃÃo de Ãlcera por pressÃo em idosos assistidos no domicÃlio / Adaptation and validation of protocol for the prevention of pressure ulcers in home-cared elderly people
This is an experimental randomized study which aimed: to verify the validity of a nursing protocol for the prevention of pressure ulcers in elderly bedridden at home, whose care is performed by family caregivers with the supervision of nurses working in the primary care of the Brazilian Health System; to review the protocol for the prevention of pressure ulc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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24. Preparation of pellets containing highly soluble drug by extrusion/spheronisation and coating with Kollicoat® SR 30D
The aim of this study was to prepare and evaluate the pellets, containing a highly soluble drug (ascorbic acid), by the extrusion-spheronization process and coated with a release controlling polymer. The coating (undertaken in a fluid bed) was applied to three batches of the pellets with a dispersion of Kollicoat® SR 30 D, with each batch of pellets receivi
Brazilian Archives of Biology and Technology. Publicado em: 2011-04