Drift Velocity
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. SPECTRUM, VELOCITY AND DRIFT OF DROPLETS SPRAYED BY NOZZLES WITH AND WITHOUT AIR INDUCTION AND MINERAL OIL
ABSTRACT The aim of this study was to evaluate the spectrum, the velocity and the potential drift risk of droplets sprayed by nozzles with and without air induction, with the addition of mineral oil to the spray solution. The experiment was conducted in a completely randomized design with five replications; in a factorial model 2 × 2 (two spray nozzles and
Eng. Agríc.. Publicado em: 2017-06
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2. Medidas de velocidade de arrastamento de elétrons no isobutano puro / Measurements of electron drift velocity in pure isobutane
The electron drift velocity characterizes the electric conductivity of weakly ionized gases and is one of the most important transport parameters for simulation and modelling of radiation detectors and plasma discharges. This work presents the results of electron drift velocity as a function of the reduced electric field obtained in pure nitrogen and pure is
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/03/2010
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3. Effect of electron inertial delay on Debye sheath formation
Present contribution deals with the role of weak but finite electron inertia on the sheath formation condition. As reported earlier this becomes effective when the ions' drift velocity exceeds the phase velocity of the acoustic wave fluctuations. Such situation has natural existence near the sheath edge. Keeping this in mind we have revisited the problem of
Brazilian Journal of Physics. Publicado em: 2010-09
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4. Sistemas eletrônicos em duas dimensões : desordem e resposta dinâmica
In disordered systems the pinning strength on the carriers due to impurities or defects is one of the most important mechanisms that produce insulator behavior. A transition to a metal phase should occur if a driving field is applied to the system. In the last three decades, such transition in two-dimensional systems has attracted much attention in light of
Publicado em: 2009
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5. Determinação de órbita e manobras utilizando GPS e motor com baixo empuxo / Orbit determination and autonomous maneuver using GPS and low thrust
The Global Positioning System (GPS) is a satellite navigation system that allows the users to determine 3D positioning and the time with high precision. Its main purposes are: aid to radionavigation in three dimensions with high precision positioning, navigation in real time, global coverage and quick acquisition of data sent by the GPS satellites. In this w
Publicado em: 2008
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6. Análise da dispersão de larvas de lagostas no Atlântico tropical a partir de correntes geotróficas superficiais derivadas por satélites / Use of geostrophic currents derived from radar altimeter to study lobster larvae dispersion in the tropical atlantic
Three species of spiny lobster are harvested along the Brazilian coast (Panulirus argus, P. laevicauda and P. echinatus). The annual revenue amounts 50 to 60 million US dollars. These species have a relatively long planktonic larval phase (about one year), that enables the mean ocean currents to transport the larvae over long distances away from the original
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/05/2006
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7. Use of geostrophic currents derived from radar altimeter to study lobster larvae dispersion in the tropical atlantic / Análise da dispersão de larvas de lagostas no Atlântico tropical a partir de correntes geotróficas superficiais derivadas por satélites
Three species of spiny lobster are harvested along the Brazilian coast (Panulirus argus, P. laevicauda and P. echinatus). The annual revenue amounts 50 to 60 million US dollars. These species have a relatively long planktonic larval phase (about one year), that enables the mean ocean currents to transport the larvae over long distances away from the original
Publicado em: 2006
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8. Estudo da dinâmica do sistema termosfera - ionosfera por modelo teórico e observações experimentais / Study of the termosphere-ionosphere system dynamics by theoretical model and experimental observations
In this work it was developed a new version of the ionospheric model SUPIM (Sheffield University Plasmasphere Ionosphere Model), in which the ionospheric E region and equatorial zonal drift velocity calculations for F region were included. This new version, named as SUPIM-E (Sheffield University Plasmasphere Ionosphere Model Enhanced) provide applied studies
Publicado em: 2005
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9. Delimitação de Reservatórios Delgados Utilizando Atributos Sísmicos
The Carapeba Field, discovered in 1982, is located around 65 km from the coast, at 90 m water depth, and had its production started in 1989. The Carapebas rock reservoirs are fine to coarse grained turbidite sandstones, locally conglomeratic, of Santonian age (around 85 Ma), at an average depth of 3000 m. These reservoirs are inserted in one of the most impo
Publicado em: 2005
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10. Orbit determination of artificial satellites in real time using gps navigation solution / Determinação de órbitas de satélites artificiais em tempo real através da solução de navegação de GPS
The Global Positioning System (GPS) is a satellite navigation system that allows the users to determine 3D positioning and the time with high precision. Its main purposes are: aid to radionavigation in three dimensions with high precision positioning, navigation in real time, global coverage and quick acquisition of data sent by the GPS satellites. It is pro
Publicado em: 2004
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11. Thermospheric meridional winds inferred from ionospheric soundings / Ventos termosféricos meridionais inferidos por meio de sondagens ionosféricas
Nighttime thermospheric neutral winds aligned to the magnetic meridian are derived from F-region height variations, over two equatorial stations, Manaus (2.9°S, 60.0°W, dip latitude 6.06°N) and Palmas (10.2°S, 48.2°W, dip latitude 6.2°S) and one low latitude station, São José dos Campos (23.2°S, 45.9°W, dip latitude 18.26°S), in the Brazilian sect
Publicado em: 2004
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12. A new double probe system for studies of non-uniform plasmas
A theoretical and experimental study was developed about the applicability of a double probe system consisting of two directional Langmuir probes, both probes being located separately in a plasma column. The current- voltage characteristic of the double probe was obtained considering a plasma with a drifting maxwellian electron velocity distribution function
Brazilian Journal of Physics. Publicado em: 2003-12