Results 11 to 20 of about 21,224 (137)

Photon bubble turbulence in cold atom gases

open access: yesNature Communications, 2021
Photon bubble turbulence is an astrophysical phenomenon involving radiation transport. Here, the authors report analogous behavior in ultracold gas by observing signatures of photon bubble instabilities in Rb atoms trapped in a MOT.
R. Giampaoli   +3 more
doaj   +1 more source

Predictive modeling of Alfvén eigenmode stability in inductive scenarios in JT-60SA

open access: yesFrontiers in Physics, 2023
The JT-60SA device offers unique conditions before ITER for the study of the interaction of energetic particles with plasma waves. With similar dimensions to JET, e.g., a major radius but with a slightly more elongated plasma volume, JT-60SA is used as a
R. Coelho   +11 more
doaj   +1 more source

ANÁLISE DA FUSÃO AZUL-TRIP SOB A ÓTICA DOS GANHOS DE EFICIÊNCIA

open access: yesRevista de Economia Contemporânea, 2019
RESUMO Este artigo objetivou fazer uma avaliação da fusão entre as companhias aéreas Azul e Trip, mensurando os potenciais ganhos de eficiência decorrentes do ato de concentração.
Kleber Pacheco de Castro   +2 more
doaj   +1 more source

Degenerative lumbar stenosis: update Estenose lombar degenerativa: atualização

open access: yesArquivos de Neuro-Psiquiatria, 2009
We present a literature review of the diagnosis and treatment of acquired lumbar spinal stenosis (LS), with a brief description of new surgical techniques.
Andrei F. Joaquim   +3 more
doaj   +1 more source

Quasi-Static and Dynamic Photon Bubbles in Cold Atom Clouds

open access: yesAtoms, 2022
Turbulent radiation flow is ubiquitous in many physical systems where light–matter interaction becomes relevant. Photon bubble instabilities, in particular, have been identified as a possible source of turbulent radiation transport in astrophysical ...
João D. Rodrigues   +5 more
doaj   +1 more source

Determinaçao da absorçao do feixe láser em ensaios de refusao em regime continuo

open access: yesRevista de Metalurgia, 1998
[pt] Este trabalho estuda a absorção do feixe laser sobre a superfície de um ferro fundido branco por meio de ensaios calorimétricos. Um láser de CO2, trabalhando no modo contínuo, foi utilizado para produzir um traço refundido sobre a superfície de um ...
M. Lima, J. D. Wagnière
doaj   +1 more source

Constitutive modeling and analysis of geomaterials

open access: yesSoils and Foundations, 2023
This is a review of the papers written by the author with co-researchers, which have been published in Soils & Foundations and related publications.
Fusao Oka
doaj   +1 more source

Quantum Electrodynamics vacuum polarization solver

open access: yesNew Journal of Physics, 2021
The self-consistent modeling of vacuum polarization due to virtual electron-positron fluctuations is of relevance for many near term experiments associated with high intensity radiation sources and represents a milestone in describing scenarios of ...
T Grismayer   +5 more
doaj   +1 more source

Advances, Challenges, and Future Perspectives of Microwave Reflectometry for Plasma Position and Shape Control on Future Nuclear Fusion Devices

open access: yesSensors, 2023
Providing energy from fusion and finding ways to scale up the fusion process to commercial proportions in an efficient, economical, and environmentally benign way is one of the grand challenges for engineering. Controlling the burning plasma in real-time
Bruno Gonçalves   +21 more
doaj   +1 more source

Recognising and quantifying the evolution of skeletal paedomorphosis in Plesiosauria [PDF]

open access: yesFossil Record, 2023
Plesiosaurs are one of the longest-ranging tetrapod groups in the Mesozoic and underwent a major adaptive radiation in the Late Triassic/Early Jurassic, so they are an ideal clade to study the long-term implications and deep-time evolution of specific ...
Ricardo Araújo, Adam S. Smith
doaj   +3 more sources

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