Eclética Química

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Mobile breathers in a Nonlinear model for DNA breathing

Hernán Cortez Gutiérrez

Elso Drigo Filho

José Roberto Ruggiero

Milton Cortez Gutierrez

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Abstract: Objectives. Analyze the DNA dynamics in PeyrardBishop-Dauxois model (PBD) with different control parameters using its energy center of the mobile “breather”. Materials and methods. We used the Peyrard-Bishop-Dauxois mathematical model and the MATLAB software

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DOI: https://doi.org/

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Cold gas spray coatings: basic principles, corrosion protection and applications

Fernando Santos da Silva

Núria Cinca

Sergi Dosta

Irene Garcia Cano

Josep Maria Guilemany

Assis Vicente Benedetti

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Abstract: In this review, the beginnings and evolution of the cold gas spray (CGS) technique are described, followed by the main fundamental aspects of the technique together with a description of the several spraying systems up to date. Sequentially, the main spray pa

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DOI: https://doi.org/

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Determination of copper in sugarcane spirit by flame atomic absorption spectrometry using a ternary solvent mixture (water-ethanol-acetone)

João Carlos de Souza

Aline Theodoro Toci

Maísa Azevedo Beluomini

Sebastião de Paula Eiras

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Abstract: The present work describes the use of a homogeneous ternary mixture of the solvents water, ethanol, and acetone to improve the determination of copper in sugarcane spirit by flame atomic absorption spectrometry. The solvent ratio used (on a volume basis) was

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DOI: https://doi.org/

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Effect of redox potential on chalcopyrite dissolution imposed by addition of ferrous ions

Ana Laura Araújo Santos

Fabiana Antonia Arena

Assis Vicente Benedetti

Denise Bevilaqua

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Abstract: Copper is one of the metals with great economic interest and about 70% of it is found in nature as chalcopyrite mineral (CuFeS2 ). Due to its slow dissolution kinetics, chalcopyrite dissolution is still a challenge for industries and researchers. Control of r

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Glass formation and the structural study of the Sb2O3-SbPO4-WO3 system

Douglas Faza Franco

Hssen Fares

Antônio Eduardo de Souza

Silvia Helena Santagneli

Marcelo Nalin

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Abstract: Glasses in the ternary system (Sb2O3 )(0.6- x)(SbPO4 )(0.4)(WO3 )(x), with composition 0.1  x  0.5 (in mol %) were studied. The structural changes due to the replacement of Sb2O3 by WO3 have been investigated. It was found that the incorporation of WO3 enha

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The first report of chemical and biological study of essential oil from Begonia reniformis leaf (Begoniaceae)

Anne Gabrielle Marques da Silva

Marcilio Wagner Fontes Silva

Giselle Barbosa Bezerra

Clécio Souza Ramos

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Abstract: Species of the genus Begonia are expensive ornamental plants. There have been few reports of chemical studies with the Begonia species. Here we report the first chemical and biological study of essential oil for a species of Begonia. The essential oil of the

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DOI: https://doi.org/

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