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So far nelson has created 475 blog entries.

Long-range spatial correlations and fluctuation statistics of lightning activity rates in Brazil

Haroldo V. Ribeiro, Fernando J. Antonio, Luiz G. de Andrade Alves, Ervin K. Lenzi e Renio dos S. Mendes

EUROPHYSICS LETTERS – Volume: 104; Issue: 6; Pages: 69001; DOI: 10.1209/0295-5075/104/69001

We report on a statistical analysis of the lightning activity rates in all Brazilian cities. We find out that the average of lightning activity rates exhibit a […]

Luminescence quantum efficiency at 1.5 mu m of Er3+-doped tellurite glass determined by thermal lens spectroscopy

M. S. Figueiredo, Fabio A. Santos, Keizo Yukimitu, João C. Silos Moraes, Junior R. Silva, Mauro L. Baesso, Luiz A. Oliveira Nunes, Luis H. da Cunha Andrade e Sandro M. Lima

OPTICAL MATERIALS – Volume: 35; Issue: 12; Pages: 2400-2404; DOI: 10.1016/j.optmat.2013.06.041

Erbium doped tellurite glasses (TeO2 + Li2O + TiO2) were prepared by conventional melt-quenching method to study the […]

Magnetic states and valence fluctuations in charge frustrated polycrystalline lutetium ferrite samples

Diego S. Fukano Viana, Ducinei Garcia, José A. Eiras, Maristela O. M. Dionysio de Souza, Sylvio D. de Souza, Diogo Z. Montanher, Luiz F. Cótica, Ivair A. dos Santos, Adelino de A. Coelho e Ricardo A. Mascarello Gotardo

SCRIPTA MATERIALIA – Volume: 69; Issue: 9; Pages: 670-673; DOI: 10.1016/j.scriptamat.2013.07.027

LuFe2O4 polycrystalline materials were processed by an innovative […]

Microencapsulation by Freeze-Drying of Potassium Norbixinate and Curcumin with Maltodextrin: Stability, Solubility, and Food Application

Mirian Sousdaleff, Mauro L. Baesso, Antonio Medina Neto, Ana Cláudia Nogueira, Vanessa A. Marcolino e Graciette Matioli

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY – Volume: 61; Issue: 4; Pages: 955-965; DOI: 10.1021/jf304047g

Stability of potassium norbixinate and curcumin by microencapsulation with maltodextrin DE20 and freeze-drying was evaluated as a function of exposition to light, air, different pH, […]

Modeling Nematic Liquid Crystals: Analytical Solution for the Balance of Torques Equation With Moment of Inertia and Surface Viscosity

Adailton T. da Silva, Maike A. Faustino dos Santos, Ervin K. Lenzi, Luiz R. Evangelista e Rafael S. Zola

MOLECULAR CRYSTALS AND LIQUID CRYSTALS – Volume: 576; Issue: 1; Pages: 32-41; DOI: 10.1080/15421406.2013.789428

We investigate the director relaxation of a nematic liquid crystal cell by considering the molecular moment of inertia, surface viscosity and anchoring energies at […]

Modeling the population lens effect in thermal lens spectrometry

Junior R. Silva, Luis C. Malacarne, Mauro L. Baesso, Sandro M. Lima, Luis H. C. Andrade, Carlos Jacinto, M. P. Hehlen e Nelson G. Castelli Astrath

OPTICS LETTERS – Volume: 38; Issue: 4; Pages: 422-424; DOI: 10.1364/OL.38.000422

We report a theoretical model and experimental results for laser-induced lensing in solids. The model distinguishes and quantifies the contributions […]

Modification of montmorillonite with sodium sulfide for prebiotic chemistry studies: Characterization using spectroscopy methods and X-ray diffractometry

Cristine E. A. Carneiro, Carla F. C. Machado, Ivan G. de Souza, Andrea Paesano Jr., Eduardo Di Mauro, Antonio Carlos S. da Costa, Cláudio M. D. de Souza, Henrique de Santana, Dimas A. M. Zaia

APPLIED CLAY SCIENCE – Volume: 86; Pages: 18-22; DOI: 10.1016/j.clay.2013.09.016

Changes in the mineral characteristics of montmorillonite (Mt) resulting from exposure to […]

Morphological and Structural Changes in Lung Tissue Infected by Paracoccidioides brasiliensis: FTIR Photoacoustic Spectroscopy and Histological Analysis

Edilaine M. Morato, Gutierrez R. Morais, Francielle Sato, Antonio Medina Neto, Terezinha I. E. Svidzinski, Mauro L. Baesso e Luzmarina Hernandes

PHOTOCHEMISTRY AND PHOTOBIOLOGY – Volume: 89; Issue: 5; Pages:1170-1175; DOI: 10.1111/php.12110

This study evaluated physical, chemical and morphological changes in lungs of mice infected with Paracoccidioides brasiliensis. The animals were inoculated with 0.1 mL of fungal suspension […]

Move-by-Move Dynamics of the Advantage in Chess Matches Reveals Population-Level Learning of the Game

Haroldo V. Ribeiro, Renio S. Mendes, Ervin K. Lenzi, Marcelo del Castillo-Mussot e Luís A. N. Amaral

PLOS ONE – Volume: 8; Issue: 1; Article Number: e54165; DOI: 10.1371/journal.pone.0054165

The complexity of chess matches has attracted broad interest since its invention. This complexity and the availability of large number of recorded matches make chess an ideal model […]

Multiferroism and magnetoelectric coupling in (PbZr0.65Ti0.35O3)(0.97)-(BaFe12O19)(0.03) ceramic composites

José de Los Santos Guerra, Madhuparna Pal, Roney J. Portugal, Luiz F. Cótica, Ivair A. Santos, Ruyan Guo e Amar S. Bhalla

JOURNAL OF APPLIED PHYSICS – Volume: 114; Issue: 22; Article Number: 224113; DOI: 10.1063/1.4848998

The ferroelectric, magnetic, and magneto-electric properties of a PZT/Ba-hexaferrite (PbZr0.65Ti0.35O3/BaFe12O19) ceramic composite are reported. The expected rhombohedral-PZT and Ba-hexaferrite phases have […]