Particle Collision
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Estimativa de Parâmetros e Solução de um Problema de Transferência de Calor Utilizando Métodos de Otimização Modificados
RESUMO Neste artigo é realizada a estimativa de parâmetros e solução de um problema de transferência de calor, onde os resultados numéricos são comparados com dados experimentais obtidos na literatura. O modelo matemático é resolvido numericamente utilizando o Método das Diferenças Finitas (MDF) com formulação implícita. Já a estimativa dos pa
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. PREDICTION OF COAL SLURRY PIPELINE TRANSPORTATION GRADING REDUCTION AND ITS INFLUENCE ON PIPE TRANSPORTATION PARAMETERS
Abstract Coal slurry pipe, being a new type of energy transportation mode, changes of the particle composition and the effect on other parameters are worth studying. Comparison of ring tube test measured data and batch grinding model simulation data shows that batch grinding model can predict the coal particle gradation to a certain extent. The effect of col
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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3. Comparative evaluation between mechanical and pneumatic cells for quartz flotation in the iron ore industry
Abstract Flotation plays a relevant role in the concentration of iron ores. Conventional flotation technology employing mechanical machines and columns and also circuits combining both types of cells have been utilized in the iron ore industry. The top size of particles in the flotation circuit feed is 150 µm and the slimes below 10 µm are removed as overf
REM, Int. Eng. J.. Publicado em: 2018-07
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4. Path Planning for Unmanned Underwater Vehicle in 3D Space with Obstacles Using Spline-Imperialist Competitive Algorithm and Optimal Interval Type-2 Fuzzy Logic Controller
Abstract In this research, generation of a short and smooth path in three-dimensional space with obstacles for guiding an Unmanned Underwater Vehicle (UUV) without collision is investigated. This is done by utilizing spline technique, in which the spline control points positions are determined by Imperialist Competitive Algorithm (ICA) in three-dimensional s
Lat. Am. j. solids struct.. Publicado em: 2016-06
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5. Influence of different acid etchings on the superficial characteristics of Ti sandblasted with Al2O3
Some implant manufactures use Al2O3 instead TiO2 powder to sandblast the machined dental implant, because Al2O3 powder is commercially more easily available and is cheaper than TiO2 powder. However, Al2O3 powder usually leaves aluminum oxide contamination on the surface, which is potentially toxic. In this work, we subjected Ti discs previously sandblasted w
Mat. Res.. Publicado em: 10/05/2013
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6. Estudo sobre a identificação de hádrons em câmaras de fotoemulsão / Study about hadron identification in emulsion chambers
This work introduces the importance of photoemulsion chambers that remain in use after decades and still offer many advantages for elementary particle physics. We cite OPERA (Oscillation Project with Emulsion-tRacking Apparatus) detector that is the greatest lead photoemulsion chamber detector ever constructed as an example of its application nowadays (nine
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2012
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7. Aspectos estatísticos em colisões de partículas relativísticas / Statistical Aspects of Relativistic Particle Collisions
Várias propriedades das colisões de partículas hadrônicas são bem descritas pela teoria termodinâmica de Hagedorn para hádrons altamente excitados (em inglês, fireballs) [1]. Uma destas propriedades é a distribuição dos momentos das partículas decorrentes da colisão. O modelo estatístico desenvolvido por Hagedorn se mostra em concordância com
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/12/2011
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8. Proposição e análise de modelos híbridos para o problema de escalonamento de produção em oficina de máquinas / Presentation and analysis of hybridization models for the jobshop scheduling problem
Nas últimas décadas, o problema de escalonamento da produção em oficina de máquinas, na literatura referido como JSSP (do inglês Job Shop Scheduling Problem), tem recebido grande destaque por parte de pesquisadores do mundo inteiro. Uma das razões que justificam tamanho interesse está em sua alta complexidade. O JSSP é um problema de análise combin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2010
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9. Size distribution of agglomerates of milk powder in wet granulation process in a vibro-fluidized bed
Results of experiments on the influence of technological parameters (intensity of vibration, granulation of the liquid feed, temperature of fluidization agent) on the change of size distribution, as well as mass mean diameter of the milk powder particles subjected to the wet granulation process (agglomeration) in a vibro-fluidized bed granulator are shown in
Brazilian Journal of Chemical Engineering. Publicado em: 2009-09
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10. Pion-pion and pion-proton correlations: new results from CERES
Results of a new two-particle correlation analysis of central Pb+Au collision data at 158 GeV per nucleon are presented. The emphasis is put on pion-proton correlations and on the dependence of the two-pion correlation radii on the azimuthal emission angle with respect to the reaction plane.
Brazilian Journal of Physics. Publicado em: 2007-09
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11. Disappearance of squeezed back-to-back correlations: a new signal of hadron freeze-out from a supercooled quark gluon plasma
We briefly discuss four different possible types of transitions from quark to hadronic matter and their characteristic signatures in terms of correlations. We also highlight the effects arising from mass modification of hadrons in hot and dense hadronic matter, as well as their quantum statistical consequences: the appearance of squeezed quantum states and t
Brazilian Journal of Physics. Publicado em: 2007-09
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12. GPU-BASED PARTICLE SIMULATION WITH COLLISION HANDLING / SIMULAÇÃO DE PARTÍCULAS BASEADA EM GPU COM TRATAMENTO DE COLISÃO
This work presents a new proposal for the implementation of a GPU-based particle system. The simulation runs entirely on the graphic processor, thus eliminating data transfer between the CPU and the GPU. The proposed system is able to simulate particles with different diameters in confined environments, including support for inter-particle collisions, constr
Publicado em: 2007