Collisions
Mostrando 13-24 de 292 artigos, teses e dissertações.
-
13. Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion
AbstractAccording to the research fruits of the diverse damages of bridge in the past, bearings' invalidation is the main reason of the damage of isolated bridges and causes oversized relative displacements between pier and girder. Eventually, it may lead to severe collision of superstructure. It is extremely dangerous when near-fault motion occurs, because
Lat. Am. j. solids struct.. Publicado em: 2015-07
-
14. Molecular dynamic study of the jet noise about the micro-scale tube
This paper studies the two-dimensional micro-scale molecular simulations of the jet flow using Lagrange discrete systems and adopting Andresen flexible constraint mechanism. At the effects of different excitation conditions and boundary conditions, the low Mach number flow field and sound field are obtained, and characteristic results are given. At the jet f
Matéria (Rio J.). Publicado em: 2014-12
-
15. Software para simulação de mecanismo de supressão da luminescência: modelo cinético de Stern-Volmer
A software that includes both Stochastic and Molecular Dynamics procedures has been developed with the aim of visualizing the Stern-Volmer kinetic mechanism of dynamic luminescence quenching. The software allows the student to easily simulate and graphically visualize the molecular collisions, the molecular speed distributions, the luminescence decay curves,
Quím. Nova. Publicado em: 2014-04
-
16. 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
-
17. In-flight collision avoidance controller based only on OS4 embedded sensors
The major goal of this research was the development and implementation of a control system able to avoid collisions during the flight for a mini-quadrotor helicopter, based only on its embedded sensors without changing the environment. However, it is important to highlight that the design aspects must be seriously considered in order to overcome hardware lim
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-09
-
18. In-situ quasi-static and dynamic behavioural response of steel tubular frames subjected to lateral impact loads
Steel tubular members are widely used as primary and secondary structural framing members in offshore oil and gas platforms. A platform is inherently liable to collisions from ships which can create severe structural damages in the rig. The effect of this damage has been studied by a number of researchers through investigating the impact behaviour isolated t
Lat. Am. j. solids struct.. Publicado em: 2012-06
-
19. 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
-
20. Estudo da produção de quarks pesados no experimento STAR@RHIC / Study as production of heavy quarks in the STAR experiment at RHIC
O plasma de quarks e glúons é uma previsão da cromodinâmica quântica e experimentos em aceleradores de alta energia têm encontrado evidências experimentais de sua criação em colisões de íons pesados relativísticos. Uma dessas evidências foi proposta por Matsui e Satz [1] que prevê a supressão de estados de heavy quarkonium na existência deste
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2011
-
21. Sobre a evolução hidrodinâmica da matéria nuclear criada em colisões de íons pesados relativísticos - um estudo com condições iniciais flutuantes / On the hydrodynamic evolution of the nuclear matter created in relativistic heavy ion collisions - a study with fluctuating initial conditions
In this work we apply a hydrodynamic model with fluctuating initial conditions in a event by event basis to study some observables in relativistic heavy ion collisions. We show that the introduction of fluctuations, characterized by longitudinal high energy density tubes, turn the computation of the observables closer to data, in comparison to the traditiona
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2011
-
22. Ecologia e Conservação de Tartarugas Marinhas Através da Análise de Encalhes no Litoral Paraibano
Five sea turtle species use the Brazilian coast for reproduction and feeding: loggerhead turtle (Caretta caretta), green turtle (Chelonia mydas), leatherback turtle (Dermochelys coriacea), olive turtle (Lepidochelys olivacea) and hawksbill turtle (Eretmochelys imbricata). These species are included in the threatened categories, as much globally, according to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
-
23. Montagem e caracterização de uma armadilha magneto-óptica de rubídio / Mounting and characterization of a rubidium magneto-optical trap
In this work we present the building and characterization of a Magneto-Optical Trap (from now on named MOT) for Rubidium atoms. We perform experiments for studying the eect of a broadband light over trapped atoms. In order to carry out this study we used a incandescent lamp which is broad in the wavelength spectrum. We observed in a MOT, with a number of 109
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/07/2011
-
24. Caracterização batimétrica e fisicooceanográfica do canal de acesso ao porto de Cabedelo/PB: uma análise ambiental ao derrame de óleo
The State of Paraíba is one of the most dynamic states of Brazil, strategically located in the northeast, is notable for the excellent potential for integration of different transportation modes forming the states of Rio Grande do Norte, Pernambuco and Alagoas. The dynamic that occurs with port activity causes changes in the space where it is installed. And
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011