Results 31 to 40 of about 164,733 (149)

Classificação de pastagem no município de Rio Negro, MS. [PDF]

open access: yes, 2020
Neste contexto, este trabalho tem por objetivo classificar diferentes níveis de pastagens degradadas no município de Rio Negro, MS, utilizando para este fim a fusão de imagens dos sensores CCD e HRC do satélite CBERS-2B, ano base ...
LUCIANO, A. C. dos   +1 more
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Characteristics of heavy metals and their evaluation in suspended sediments from Piracicaba river basin (São Paulo, Brazil) [PDF]

open access: yes, 2010
Fluxes of the particulate heavy metals like chromium (Cr), copper (Cu), cobalt (Co), nickel (Ni), zinc (Zn) and lead (Pb) were determined along the Piracicaba River basin.
Mortatti, Jefferson, Probst, Jean-Luc
core   +3 more sources

Deuterium retention in tin (Sn) and lithium–tin (Li–Sn) samples exposed to ISTTOK plasmas

open access: yesNuclear Materials and Energy, 2017
The use of lithium (Li) or tin (Sn) as a liquid metal plasma facing component is proposed as a solution to the high power load issue on the divertor region of nuclear fusion reactors.
J.P.S. Loureiro   +10 more
doaj   +1 more source

Electron-scale shear instabilities: magnetic field generation and particle acceleration in astrophysical jets

open access: yesNew Journal of Physics, 2014
Strong shear flow regions found in astrophysical jets are shown to be important dissipation regions, where the shear flow kinetic energy flow is converted into electric and magnetic field energy via shear instabilities.
E P Alves   +3 more
doaj   +1 more source

Multi-mJ Scaling of 5-Optical Cycle, 3 µm OPCPA

open access: yesPhotonics, 2021
We present the design of an ultrafast optical parametric chirped pulse amplifier (OPCPA) operating at 3 µm yielding few-cycle pulses and multi-mJ output energy.
Joana Alves   +3 more
doaj   +1 more source

Subproducts of subchondral bone fraising in substitution of autologous cancellous grafts in pancarpal arthrodesis of dogs [PDF]

open access: yes, 2008
A artrodese rádio-cárpica é procedimento radical usado no tratamento de fraturas e luxações do carpo, com danos à fibrocartilagem palmar e às estruturas ligamentares de sustentação, decorrentes de hiperextensão.
FERRAZ, Vanessa Couto de Magalhães   +2 more
core   +2 more sources

Cinema e televisão: uma fusão desigual [PDF]

open access: yes, 2016
Entre a Televisão e o Cinema… as relações são complexas e desiguais. A TV tem sido sempre considerada o «parente pobre». Porque é um media de massas dirigido a audiências muito vastas e indiferenciadas; porque parece gratuita… é da ordem da Aparição ...
Maia e Carmo, Teresa
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Amplification and generation of ultra-intense twisted laser pulses via stimulated Raman scattering

open access: yesNature Communications, 2016
High intensity light with a non-zero orbital angular momentum could aid the development of laser-wakefield particle accelerators. Here, the authors theoretically show that stimulated Raman backscattering in plasmas can generate and amplify orbital ...
J. Vieira   +7 more
doaj   +1 more source

Fundamental Rovibrational Excitation in Co 2 Low‐Temperature Plasma in the Presence of Common Impurities

open access: yesPlasma Processes and Polymers, Volume 22, Issue 7, July 2025.
Energy cascades through the degrees of freedom of CO 2 like through a set of funnels. The funnel of symmetric stretching and bending is so wide that it is no obstacle to the energy. Exciting the system with single pulses prevents most energy from being deployed in chemical reactions.
Arianna Brescia   +2 more
wiley   +1 more source

Controle da Navegacao de um Robo Movel em um Corredor com Redundancia de Controladores [PDF]

open access: yes, 2004
Este trabalho apresenta uma estratégia de controle para que um robô móvel possa navegar ao longo da linha média de um corredor. A estratégia de controle é baseada na fusão de dois sinais de controle gerados por dois controladores distintos, os quais são ...
Daniel Fernando Tello Gamarra
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