Navegação Ciências Exatas e da Terra por Título

Resultados 1946-1965 de 5955

    • Feeding versus feedback in active galactic nuclei from near-infrared integral field spectroscopy – X. NGC 5929 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Riffel, Rogério (2015) [Artigo de periódico]
      We present near-infrared emission-line flux distributions, excitation and kinematics, as well as stellar kinematics, of the inner 520 × 520 pc2 of the Seyfert 2 galaxy NGC 5929. The observations were performed with Gemini’s ...

    • Feeding versus feedback in AGN from near-infrared IFU observations : the case of Mrk 766 

      Schönell Júnior, Astor João; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia (2014) [Artigo de periódico]
      We have mapped the emission-line flux distributions and ratios as well as the gaseous kinematics of the inner 450 pc radius of the type 1 Seyfert galaxy Mrk 766 using integral field near-infrared J- and Kl-band spectra ...

    • Feeding versus feedback in AGN from near-infrared IFU observations XI : NGC 2110 

      Diniz, Marlon Rodrigo; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia (2015) [Artigo de periódico]
      We present a two-dimensional mapping of the gas flux distributions, as well as of the gas and stellar kinematics in the inner 220 pc of the Seyfert galaxy NGC 2110, using K-band integral field spectroscopy obtained with ...

    • Feeding versus feedback in AGNs from near-infrared IFU observations : the case of Mrk 79 

      Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Winge, Claudia (2013) [Artigo de periódico]
      We have mapped the gaseous kinematics and the emission-line flux distributions and ratios from the inner≈680 pc radius of the Seyfert 1 galaxy Mrk 79, using two-dimensional (2D) nearinfrared J- and Kl-band spectra obtained ...

    • Feeding versus feedback in NGC 1068 probed with Gemini NIFS – I. Excitation 

      Riffel, Rogemar André; Vale, Tibério Borges; Storchi-Bergmann, Thaisa; McGregor, Peter J. (2014) [Artigo de periódico]
      We present emission-line flux distributions and ratios for the inner ≈200 pc of the narrowline region (NLR) of the Seyfert 2 galaxy NGC 1068, using observations obtained with the Gemini Near-infrared Integral Field ...

    • Feeding versus feedback in NGC4151 probed with Gemini NIFS – I. Excitation 

      Storchi-Bergmann, Thaisa; McGregor, Peter J.; Riffel, Rogemar André; Lopes, Ramiro Duarte Simões; Beck, Tracy; Dopita, Michael A. (2009) [Artigo de periódico]
      We have used the Gemini Near-infrared Integral Field Spectrograph (NIFS) to map the emission-line intensity distributions and ratios in the narrow-line region (NLR) of the Seyfert galaxy NGC4151 in the Z, J, H and K bands ...

    • Feeding versus feedback in NGC4151 probed with Gemini NIFS – II. Kinematics 

      Storchi-Bergmann, Thaisa; Lopes, Ramiro Duarte Simões; McGregor, Peter J.; Riffel, Rogemar André; Beck, Tracy; Martini, Paul (2010) [Artigo de periódico]
      We have used the Gemini Near-infrared Integral Field Spectrograph (NIFS) to map the gas kinematics of the inner ~200 × 500 pc 2 of the Seyfert galaxy NGC4151 in the Z, J, H and K bands at a resolving power of ≥5000 and ...

    • Feições de interação vulcano-sedimentares : exemplos na Bacia do Paraná (RS) 

      Rios, Fernando Rodrigues; Mizusaki, Ana Maria Pimentel; Michelin, Cassiana Roberta Lizzoni (2018) [Artigo de periódico]
      A Sequência Juro-Cretácea da Bacia do Paraná composta por arenitos eólicos da Formação Botucatu sobrepostos por derrames vulcânicos da Formação Serra |Geral, possui feições de interação vulcano-sedimentares na interface ...

    • Feições morfológicas associadas ao ambiente de deglaciação da Geleira Ecology, Ilha Rei George, Antártica 

      Vieira, Rosemary; Rossato, Maíra Suertegaray; Aquino, Francisco Eliseu; Simões, Jefferson Cardia (2005) [Artigo de periódico]
      A Geleira Ecology, localizada no litoral oeste da baía do Almirantado, Ilha Rei George, Ilhas Shetland do Sul, retrocedeu 400 m, aproximadamente, desde os anos 70, gerando uma complexa mescla de ambientes subglacial, ...

    • Feiras de Ciências no Brasil : panorama, resultados e recomendações 

      Silva, Camila Brito Collares da; Veit, Eliane Angela; Araujo, Ives Solano (2023) [Artigo de periódico]
      Os objetivos da presenterevisão da literatura são traçar um panorama das pesquisas sobre Feiras de Ciências sediadas no Brasil constantes no Portal de Periódicos CAPES/MEC na área de Educação e Ensino, identificar as ...

    • Fenômenos intermediários de interferência e emaranhamento quânticos : o interferômetro virtual de Mach-Zehnder integrado a atividades didáticas 

      Netto, Jader da Silva; Ostermann, Fernanda; Cavalcanti, Claudio Jose de Holanda (2018) [Artigo de periódico]
      Neste trabalho, apresentamos um conjunto de atividades didáticas que podem ser utilizadas para explorar conceitos de Física Quântica a partir da simulação computacional do Interferômetro de Mach-Zehnder. Tais atividades ...

    • Ferramentas de suporte as tarefas da analise exploratoria visual 

      Freitas, Carla Maria Dal Sasso; Wagner, Flavio Rech (1995) [Artigo de periódico]
      O trabalho apresenta de forma sistematizada as ferramentas inte rativas e visuais necessárias para suportar atividades de análise ex ploratória visual. Com base em diversos estudos de casos, as tarefas freqüentemente ...

    • Ferramentas online no ensino de ciências : uma proposta com o Google Docs 

      Heidemann, Leonardo Albuquerque; Oliveira, Ângelo Mozart Medeiros de; Veit, Eliane Angela (2010) [Artigo de periódico]

    • Ferrofluids : properties and application 

      Scherer, Claudio; Figueiredo Neto, Antonio Martins (2005) [Artigo de periódico]
      Magnetic fluids may be classified as ferrofluids (FF), which are colloidal suspensions of very fine (~10 nm) magnetic particles, and magnetorheological fluids, which are suspensions of larger, usually non-stable, magnetic ...

    • Ferromagnetic nanoclusters formed by Mn implantation in GaAs 

      Couto Junior, Odilon Divino Damasceno; Brasil, Maria José Santos Pompeu; Likawa, Fernando; Giles, Carlos Manuel; Adriano, C.; Bortoleto, José Roberto Ribeiro; Pudenzi, Marcio Alberto Araujo; Gutierrez, H.R.; Danilov, Iuri (2005) [Artigo de periódico]
      Ferromagnetic clusters were incorporated into GaAs samples by Mn implantation and subsequent annealing. The composition and structural properties of the Mn-based nanoclusters formed at the surface and buried into the GaAs ...

    • Ferromagnetic resonance in ag coupled ni films 

      Rezende, Sergio Machado; Moura, J.A.S.; Aguiar, F.M. de; Santos, Carlos Alberto dos; Schreiner, Wido Herwig; Teixeira, Sergio Ribeiro (1993) [Artigo de periódico]
      We present an X-band ferromagnetic resonance (FMR) study of polycrystalline single Ni films and of two Ni layers separated by an Ag layer at room temperature. Films were deposited by sputtering on glass using Ag over- and ...

    • Ferromagnetic resonance of fe(111)/cu(111)multilayers 

      Rezende, Sergio Machado; Moura, J.A.S.; Aguiar, F.M. de; Schreiner, Wido Herwig (1994) [Artigo de periódico]
      Ferromagnetic resonance at 9.4 GHz has been used to characterize several samples of Fe sing1e-crystal films and Fe/Cu multilayers prepared by electron-beam deposition on HF-etched, hydrogen-terminated Si(111). Resonance ...

    • Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production 

      Pavoski, Giovani; Maraschin, Thuany Garcia; Fim, Fabiana de Carvalho; Balzaretti, Naira Maria; Galland, Griselda Ligia Barrera; Moura, Cassio Stein; Basso, Nara Regina de Souza (2017) [Artigo de periódico]
      This work aimed to produce graphene oxide with few graphene layers, a low number of defects, good conductivity and reasonable amount of oxygen, adequate for use as filler in polymeric composites. Two starting materials ...

    • Fibra de palmeira como substrato para hortaliças 

      Fermino, Maria Helena; Goncalves, Reinaldo Simoes; Silveira, José Ricardo Pfeifer; Battistin, Alice; Trevisan, Miriam A. Silva; Busnello, Ângela Cristina (2014) [Artigo de periódico]
      Este trabalho teve por objetivo estudar a possibilidade de aproveitamento dos resíduos provenientes da indústria de conserva de palmito como substrato para hortaliças. Assim, a fibra da palmeira real australiana (Archontophoenix ...

    • Fickian crossover and length scales from two point functions in supercooled liquids 

      Stariolo, Daniel Adrian; Fabricius, Gabriel (2006) [Artigo de periódico]
      Particle motion of a Lennard-Jones supercooled liquid near the glass transition is studied by molecular dynamics simulations. We analyze the wave vector dependence of relaxation times in the incoherent self-scattering ...