The remarkable feature of carbon quantum dots is the strong broadband photoluminescence of their colloidal solutions, which is observed on a variety of simple synthetic routes. This article describes ...the production of carbon nanodots (C-dots) with an average size of 3 nm in poly(ethylene glycol) by laser ablation and the evaluation of the spectral molar absorption coefficient, epsilon(lambda), of these particles. In parallel we investigate optical properties as photoluminescence, lifetime and by a thermally managed Eclipse Z-scan we describe the thermo-optical properties of this colloidal suspension.
Esse artigo analisa o uso das terras no Paraná, Santa Catarina e Rio Grande do Sul, no período de 1975 a 1995, a partir da análise regional. Foram utilizados indicadores de localização e ...especialização tendo como variável a área em hectares ocupadas nos diversos usos, conforme o Censo Agropecuário. Os resultados apontaram que o padrão espacial do uso das terras na região Sul do Brasil apresenta uma forte reestruturação espacial no Paraná, o uso intensivo das pastagens naturais no Paraná e no Rio Grande do Sul e a maior diversificação no uso terras em Santa Catarina. A análise regional demonstrou uma tendência à redistribuição e reestruturação que ainda não está consolidada.
This article analyzes the lands uses in the Paraná State, Santa Catarina State and Rio Grande do Sul State in Brazil. The regional analysis period is 1975 and 1995. The localization and specialization pointers had been used indicating of having as changeable the area in busy hectares in the diverse uses, as the Farming Census. The results had pointed that the space standard of the lands uses in the Brazilian South region presents strong space reorganization in Paraná State, the intensive use of the natural pastures in the Paraná and the Rio Grande do Sul States and the biggest diversification in the use lands in Santa Catarina State. The regional analysis demonstrated to a trend to the redistribution and reorganization that is still not consolidated.
Esse artigo analisa o uso das terras no Paraná, Santa Catarina e Rio Grande do Sul, no período de 1975 a 1995, a partir da análise regional. Foram utilizados indicadores de localização e ...especialização tendo como variável a área em hectares ocupadas nos diversos usos, conforme o Censo Agropecuário. Os resultados apontaram que o padrão espacial do uso das terras na região Sul do Brasil apresenta uma forte reestruturação espacial no Paraná, o uso intensivo das pastagens naturais no Paraná e no Rio Grande do Sul e a maior diversificação no uso terras em Santa Catarina. A análise regional demonstrou uma tendência à redistribuição e reestruturação que ainda não está consolidada.
This article analyzes the lands uses in the Paraná State, Santa Catarina State and Rio Grande do Sul State in Brazil. The regional analysis period is 1975 and 1995. The localization and specialization pointers had been used indicating of having as changeable the area in busy hectares in the diverse uses, as the Farming Census. The results had pointed that the space standard of the lands uses in the Brazilian South region presents strong space reorganization in Paraná State, the intensive use of the natural pastures in the Paraná and the Rio Grande do Sul States and the biggest diversification in the use lands in Santa Catarina State. The regional analysis demonstrated to a trend to the redistribution and reorganization that is still not consolidated.
This article analyzes the lands uses in the Parana State, Santa Catarina State & Rio Grande do Sul State in Brazil. The regional analysis period is 1975 & 1995. The localization & specialization ...pointers had been used indicating of having as changeable the area in busy hectares in the diverse uses, as the Farming Census. The results had pointed that the space standard of the lands uses in the Brazilian South region presents strong space reorganization in Parand State, the intensive use of the natural pastures in the Parand & the Rio Grande do Sul States & the biggest diversification in the use lands in Santa Catarina State. The regional analysis demonstrated to a trend to the redistribution & reorganization that is still not consolidated. Figures, Graphs, Appendixes, References. Adapted from the source document.
The simultaneous propagation of two optical pulses through a doped nonlinear dispersive medium modelled by a resonant three-level system was investigated numerically, within the framework of a pair ...of coupled extended nonlinear Schrödinger equations. These included the contribution of the dopant resonances whose dynamics is governed by Bloch equations. In this work, we review the interesting possibilities on the manipulation of fields such as cloning, breakup and soliton interactions, that the combination of coherent population trapping with nonlinear dispersive media offers.
Investiga-se numericamente a propagação simultânea de dois pulsos ópticos através de um meio dispersivo não linear dopado, modelado por um sistema ressonante de três níveis, usando-se uma abordagem de equações generalizadas não lineares de Schrödinger. Estas últimas incluem a contribuição das ressonâncias do dopante cuja dinâmica é regida pelas equações de Bloch. Neste trabalho, revemos as possibilidades interessantes que a combinação de efeitos dispersivos não lineares com o aprisionamento coerente da população oferecem, tais como: clonagem, quebra e interação entre solitons.
This article analyzes the lands uses in the Paraná State, Santa Catarina State and Rio Grande do Sul State in Brazil. The regional analysis period is 1975 and 1995. The localization and ...specialization pointers had been used indicating of having as changeable the area in busy hectares in the diverse uses, as the Farming Census. The results had pointed that the space standard of the lands uses in the Brazilian South region presents strong space reorganization in Paraná State, the intensive use of the natural pastures in the Paraná and the Rio Grande do Sul States and the biggest diversification in the use lands in Santa Catarina State. The regional analysis demonstrated to a trend to the redistribution and reorganization that is still not consolidated.
This article analyzes the lands uses in the Paraná State, Santa
Catarina State and Rio Grande do Sul State in Brazil. The regional analy-sis period is 1975 and 1995. The localization and ...specialization pointers
had been used indicating of having as changeable the area in busy hec-tares in the diverse uses, as the Farming Census. The results had pointed
that the space standard of the lands uses in the Brazilian South region
presents strong space reorganization in Paraná State, the intensive use
of the natural pastures in the Paraná and the Rio Grande do Sul States
and the biggest diversification in the use lands in Santa Catarina State.
The regional analysis demonstrated to a trend to the redistribution and
reorganization that is still not consolidated.
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