Spectral Behaviour
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Effect of traffic noise on Scinax nasicus advertisement call (Amphibia, Anura)
ABSTRACT Increased anthropogenic-made sounds such as traffic noises contribute to acoustic pollution, which produces deleterious effect on song-vertebrates. We compared the advertisement call of Scinax nasicus (Cope, 1862) males in natural (as a reference or control, Site A) and Sites affected by traffic noises (Site B). Call structure was recorded and it wa
Iheringia, Sér. Zool.. Publicado em: 25/02/2019
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2. Studies on Growth, Spectral, Thermal, Mechanical and Optical Properties of 4-Bromoanilinium 4-Methylbenzenesulfonate Crystal: A Third Order Nonlinear Optical Material
Abstract 4-Bromoanilinium 4-methylbenzenesulfonate (4BPTS) single crystal was successfully grown from ethanol by slow evaporation method at room temperature. The structure of grown crystal was confirmed by single crystal X-ray diffraction studies. The presence of functional groups of grown crystal was confirmed by the Fourier transform infrared spectroscopy
Mat. Res.. Publicado em: 18/07/2016
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3. ESPECTRORRADIOMETRIA DO VISÍVEL E INFRAVERMELHO PRÓXIMO EM POVOAMENTO DE Eucalyptus grandis W. Hill ex Maiden / VISIBLE AND NEAR INFRARED SPECTRORADIOMETRY IN A Eucalyptus grandis W Hill ex Maiden POPULATION
Com o intuito de desenvolver estudos relacionando a espectrorradiometria de laboratório com os teores de macro e micronutrientes em materiais vegetativos de povoamentos florestais de Eucalyptus grandis W. Hill ex Maiden, com diferentes idades, uma área experimental foi selecionada para estudo na Fundação Estadual de Pesquisas Agropecuárias FEPAGRO FLORE
Publicado em: 2010
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4. Thermal properties of heavy-light quark pseudoscalar and vector mesons
The thermal behaviour of the mass, leptonic decay constant, and width of heavy-light quark peseudoscalar and vector mesons is analized in the framework of thermal Hilbert moment QCD sum rules. In all the cases, the meson leptonic decay constants decrease with increasing T, and vanish at a critical temperature Tc, while the mesons develop a width which increa
Brazilian Journal of Physics. Publicado em: 2008-09
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5. Temporal organization in Pyrrhura lepida lepida / Organização temporal em Pyrrhura lepida lepida
The behaviours of many animals are organized in the rhythmic pattern as mechanism of the adaptation in a cyclical environment. The goal of this research was describe the daily distribution of the behaviors in Pyrrhura lepida lepida, to characterize your temporal organization. It was observed, individually, the behaviour of four birds that are living at the Z
Publicado em: 2008
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6. Relations between growth analysis, yield and remote sensing of sugarcane / Relação entre indicadores de crescimento e de produção da cana-de-açucar e dados espectrais terrestres e orbitais
The knowledge about the relations between agronomic variables and spectral data is a challenging issue when adopting remote sensing technique for crop yield forecast. This study analyses the relationship between sugarcane agronomic variables and spectral data derived from field spectroscopy and orbital data. One commercial field of sugarcane with the variety
Publicado em: 2007
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7. Influence of the current density and resistivity on the optical properties of p-type porous silicon thin films fabricated by the electrochemical anodizing method
Porous Silicon thin films were produced in this work by the electrochemical anodizing method. The samples were fabricated anodizing p type Si substrates with different resistivities in hydrofluoric acid. Samples were prepared at different current densities. The films were characterized through reflectance and room photoluminescence (PL) measurements in the v
Brazilian Journal of Physics. Publicado em: 2006-09
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8. Magnetic, thermal and spectral behaviour of 3-chloro-2-nitrobenzoates of Co(II), Ni(II), and Cu(II)
Physico-chemical properties of 3-chloro-2-nitrobenzoates of Co(II), Ni(II) and Cu(II) were synthesized and studied. The complexes were obtained as mono- and dihydrates with a metal ion to ligand ratio of 1 : 2. All analysed 3-chloro-2-nitrobenzoates are polycrystalline compounds with colours depending on the central ions: pink for Co(II), green for Ni(II) an
Eclética Química. Publicado em: 2006
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9. Variabilidade da frequencia cardiaca em trabalhadores em turnos / Heart rate variability in shift workers
In industrialized countries approximately 15 to 20% of the workforce is engaged on shift work and this is associated with an increased rate of cardiovascular diseases. It is still not clear but the alterations in circadian rhythms of the cardiac autonomic nervous system could explain this phenomenon. A non-invasive tool to evaluate autonomic nervous system a
Publicado em: 2006
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10. Numerical investigation of the flow around two circular cylinders in tandem. / Estudo numérico do escoamento ao redor de cilindros alinhados.
This work deals with the incompressible flow around pairs of rigid and immovable circular cylinders in tandem arrangements. There are two goals in this research: the first one is to find causality relationships between physical characteristics of the flow and the changes that are observed in the forces and in the flow field with the variation of the Reynolds
Publicado em: 2005
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11. Caracterização vibracional e térmica de blendas de LDPE e m-LLDPE / Thermal and vibrational characterization of blends: Blends of low density polyethylene (LDPE) and linear low density polyethylene synthesized with the metallocene catalyst (m-LLDPE)
Blends of low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) are used commercially to improve the final properties of the products and their process, reduce the production cost having as their main segment packing film. The LLDPE used in this work was synthesized with the metallocene catalyst (m-LLDPE), which was projected to offer b
Publicado em: 2005
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12. Avaliação da anisotropia magnetica de filmes finos por ressonancia ferromagnetica
Magnetic anisotropies of thin films are analysed from Ferromagnetic Resonance spectra obtained for different orientations of the samples with respect to the applied magnetic field. An Fe monocrystalline film, a Co polycrystalline film, a Co/Pd multilayers set of films with Co layers 3, 4 and 6Å thick with 15Å Pd as spacer layers, and a set of granular Co-C
Publicado em: 2002