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Resultados 160519-160538 de 265913

    • Ion-cyclotron instability in plasmas described by product-bi-kappa distributions 

      Santos, Michel Silva dos; Ziebell, Luiz Fernando; Gaelzer, Rudi (2015) [Artigo de periódico]
      The dispersion relation for parallel propagating waves in the ion-cyclotron branch is investigated numerically by considering that the velocity distribution of the ion population is a function of type product-bi-kappa. We ...

    • Ion firehose instability in plasmas with plasma particles described by product bi-kappa distributions 

      Santos, Michel Silva dos; Ziebell, Luiz Fernando; Gaelzer, Rudi (2014) [Artigo de periódico]
      We investigate the dispersion relation for low frequency electromagnetic waves propagating parallel to the ambient magnetic field, considering that the velocity distributions of ions and electrons can be either bi-Maxwellian ...

    • Ion fluxes through nanopores and transmembrane channels 

      Bordin, José Rafael; Diehl, Alexandre; Barbosa, Marcia Cristina Bernardes; Levin, Yan (2012) [Artigo de periódico]
      We introduce an implicit solvent Molecular Dynamics approach for calculating ionic fluxes through narrow nanopores and transmembrane channels. The method relies on a dual-control-volume grand-canonical molecular dynamics ...

    • Ionic liquid assisted hydrothermal syntheses of Au doped TiO2 NPs for efficient visible-light photocatalytic hydrogen production from water, electrochemical detection and photochemical detoxification of hexavalent chromium (Cr6+) 

      Ravishankar, Thammadihalli Nanjundaiah; Vaz, Maurício de Oliveira; Ramakrishnappa, Thippeswamy; Teixeira, Sergio Ribeiro; Dupont, Jairton (2017) [Artigo de periódico]
      Au/TiO2 NPs have been successfully prepared at 130 C in one day using an ionic liquid assisted hydrothermal method using methoxyethyl methyl imidazolium methanesulfonate as the ionic liquid, titanium(IV) isopropoxide and ...

    • Ionic liquid based dopant-free band edge shift in BiVO4 particles for photocatalysis under simulated sunlight irradiation 

      Khan, Niqab; Wolff, Rogério Nunes; Ullah, Hameed; Chacón, Gustavo; Rosa, Washington Santa; Dupont, Jairton; Gonçalves, Renato Vitalino; Khan, Sherdil (2022) [Artigo de periódico]
      Foreign elemental doping is a widely utilized strategy to modify the electronic structure of semiconductors. Herein, we present a dopant-free novel synthesis approach to control the electronic structure of a semiconductor. ...

    • Ionic liquid confined spaces controlled catalytic CO2 cycloaddition of epoxides in BMIm.ZnCl3 and its supported ionic liquid phases 

      Tomazett, Vinicius K.; Chacón, Gustavo; Marin, Graciane; Castegnaro, Marcus Vinicíus; Chagas, Rafael P. das; Liao, Luciano Morais; Dupont, Jairton; Qadir, Muhammad Irfan (2023) [Artigo de periódico]
      Chemical fixation of CO2 to epoxides is an atom-economic and environment-benign approach to generate cyclic carbonates. Herein, we report efficient activation of the different aromatic and aliphatic epoxides at ambient ...

    • Ionic liquid intercalated V2O5 nanorods : synthesis and characterization 

      Krishnappa, Manjunath; Souza, Virgínia Serra de; Dupont, Jairton; Ramakrishnappa, Thippeswamy; Nagaraju, Ganganagappa (2015) [Artigo de periódico]
      In this work, ionic liquid (IL) intercalated V2O5 (IL-V2O5) nanorods have been synthesized through the IL-assisted hydrothermal method using imidazolium-based functionalized IL at 130°C for 3 days. The structure and ...

    • Ionic liquid-loaded microcapsules doped into dental resin infiltrants 

      Cuppini, Marla; Garcia, Isadora Martini; Souza, Virgínia Serra de; Zatta, Kelly Cristine; Visioli, Fernanda; Leitune, Vicente Castelo Branco; Guterres, Silvia Stanisçuaski; Scholten, Jackson Damiani; Collares, Fabrício Mezzomo (2021) [Artigo de periódico]
      Resin infiltrants have been effectively applied in dentistry to manage non-cavitated carious lesions in proximal dental surfaces. However, the common formulations are composed of inert methacrylate monomers. In this study, ...

    • Ionic liquids and catalysis 

      Souza, Michele Oberson de (2014) [Artigo de periódico]
      Esse documento analisa o crescimento do número de publicações que tratam do uso de líquidos iônicos (ILs) no período 1994-2013. A área da catálise é identificada como sendo a área pioneira e responsável para o brusco aumento ...

    • Ionic size effects on the Poisson-Boltzmann theory 

      Colla, Thiago Escobar; Lopes, Lucas Nunes; Santos, Alexandre Pereira dos (2017) [Artigo de periódico]
      In this paper, we develop a simple theory to study the effects of ionic size on ionic distributions around a charged spherical particle. We include a correction to the regular Poisson-Boltzmann equation in order to take ...

    • Ion implantation and ion irradiation effects on nuclear and thermoelectric materials 

      Timm, Mariana de Mello (2019) [Tese]
      In this thesis the study of ion implantation and ion irradiation effects on microstructure and physical properties of nuclear and thermoelectric materials will be presented. Materials that are constantly exposed to radiation ...

    • Ion implantation in β-Ga2O3 : Physics and technology 

      Nikolskaya, Alena; Okulich, Evgenia; Korolev, Dmitry; Stepanov, Anton V.; Nikolichev, Dmitry; Mikhaylov, Alexey; Tetelbaum, David; Almaev, Aleksei; Bolzan, Charles Airton; Buaczick Júnior, Antônio; Giulian, Raquel; Grande, Pedro Luis; Kumar, Ashok; Kumar, Mahesh; Gogova, Daniela (2021) [Artigo de periódico]
      Gallium oxide, and in particular its thermodynamically stable β-Ga2O3 phase, is within the most exciting materials in research and technology nowadays due to its unique properties. The very high breakdown electric field ...

    • Ion irradiation effects on the exchange bias in IrMn/Co films 

      Schäfer, Deise; Grande, Pedro Luis; Pereira, Luis Gustavo; Geshev, Julian Penkov (2011) [Artigo de periódico]
      The present work reports on the influence of ion irradiation in exchange-coupled bilayers. Magnetron-sputtered IrMn4 /Co films were irradiated with 40 keV He+ ions and the dependence of their magnetic properties was studied ...

    • Ion irradiation induced direction of collapsed hard-magnetization axis in thin Co films 

      Azeredo, Lucas Felipe Santos de; Geshev, Julian Penkov; Grande, Pedro Luis; Andrade, Antonio Marcos Helgueira de (2023) [Artigo de periódico]
      A number of polycrystalline films feature distinct sharp peaks in the angular variations of their in-plane major-loop remanent magnetization and coercivity, centered 90◦ off the easy-axis position, a property referred to ...

    • Ion irradiation-induced foams in antimonide binary alloys : a combination of small energy bandgap with giant surface-to-bulk ratio 

      Giulian, Raquel; Bolzan, Charles Airton; Salazar, Josiane Bueno; Cunha, Carlo Requiao da (2020) [Artigo de periódico]
      This is a short review about the ion irradiation-induced foams in antimonide films. III–V semiconductors like InSb and GaSb can be transformed into solid foams with nanometric dimensions upon irradiation with swift heavy ...

    • Ionised gas kinematics in MaNGA AGNIonised gas kinematics in MaNGA AGN : extents of the narrow-line and kinematically disturbed regions 

      Machado, Alice Deconto; Riffel, Rogemar André; Ilha, Gabriele da Silva; Rembold, Sandro Barboza; Storchi-Bergmann, Thaisa; Riffel, Rogério; Schimoia, Jáderson da Silva; Schneider, D.P.; Bizyaev, D.; Feng, Shuai; Wylezalek, Dominika; Costa, Luiz N. da; Nascimento, Janaina Correa do; Maia, Marcio Antonio Geimba (2022) [Artigo de periódico]
      Context. Feedback from active galactic nuclei (AGNs) in general seems to play an important role in the evolution of galaxies, although the impact of AGN winds on their host galaxies is still unknown in the absence of a ...

    • Ionização do solo em sistemas de aterramento impulsivos. 

      Silva, Levi C. F. da (2001) [Resumo publicado em evento]

    • Ionized and hot molecular outflows in the inner 500 pc of NGC 1275 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Zakamska, Nadia L.; Riffel, Rogério (2020) [Artigo de periódico]
      The role of feedback from active galactic nuclei (AGNs) in the evolution of galaxies is still not fully understood, mostly due to the lack of observational constraints in the multiphase gas kinematics on the 10–100 pc ...

    • Ionized gas kinematics within the inner kiloparsec of the Seyfert galaxy NGC 1365 

      Lena, Davide; Robinson, Andrew; Storchi-Bergmann, Thaisa; Couto, Guilherme dos Santos; Müller, Allan Schnorr; Riffel, Rogemar André (2016) [Artigo de periódico]
      We observed the nuclear region of the galaxy NGC 1365 with the integral field unit of the Gemini Multi Object Spectrograph mounted on the GEMINI-South telescope. The field of view covers 13 × 6 arcsec2(1173 × 541 pc2) ...

    • Ionized outflows in local luminous AGN : what are the real densities and outflow rates? 

      Davies, Richard I.; Baron, Dalya; Shimizu, Taro; Netzer, Hagai; Burtscher, Leonard; De Zeeuw, P. Tim; Genzel, Reinhard; Hicks, Erin K. S.; Koss, Michael; Lin, Ming-Yi; Lutz, Dieter; Maciejewski, Witold B.; Muller-Sanchez, Francisco; Orban de Xivry, Gilles; Ricci, Claudio; Riffel, Rogério; Riffel, Rogemar André; Rosario, David; Schartmann, Marc; Müller, Allan Schnorr; Shangguan, J.; Sternberg, Amiel; Sturm, Eckhard; Storchi-Bergmann, Thaisa; Tacconi, Linda J.; Veilleux, Sylvain (2020) [Artigo de periódico]
      We report on the determination of electron densities, and their impact on the outflow masses and rates, measured in the central few hundred parsecs of 11 local luminous active galaxies. We show that the peak of the integrated ...