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19:35, sáb nov 18








Autores: A partir do fascículo 39/9 a revista Química Nova adotou a licença CC-BY. Mais informações a respeito dessa licença podem ser obtidas aqui.

vol. 40, No. 4, 2017, p. 363-481

 

Submission procedures for OPEN ACCESS

The Board of Directors of the Sociedade Brasileira de Química-SBQ (publisher of the Química Nova-QN) decided that QN will adopt the full open access format in which authors are required to cover part of the publication costs for their articles. See more...



Artigo de Capa
Quim. Nova 2017, 40(4), 436-446

Células solares sensibilizadas por pontos quânticos

Ana Beatriz Ferreira Vitoreti1; Letícia Bernardes Corrêa1; Ellen Raphael1; Antonio Otavio T. Patrocinio2; Ana Flávia Nogueira3; Marco Antônio Schiavon1,*

Quantum dot-sensitized solar cells are attractive energy devices because they are ease to fabricate, has potentially low cost with different possibilities of combinations, and ability to generate multiple excitons.

http://dx.doi.org/10.21577/0100-4042.20160192

Publicado online: novembro 25, 2016
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Artigos Quim. Nova 2017, 40(4), 363-370

 

Synthesis, thermal studies and conversion degree of dimethacrylate polymers using new non-toxic coinitiators

Rafael Turra Alarcon1; Bruno Barreto da Cunha Holanda1; Daniel Rinaldo1; Flávio Junior Caires1; Marcos Vinícius de Almeida2; Gilbert Bannach*,1


This work shown synthesis, thermal behavior and conversion degree of some dimethacrylates polymers using different non-toxic coinitiators, the monomer conversions were analyzed by MIR.

http://dx.doi.org/10.21577/0100-4042.20170024

Publicado online: março 9, 2017
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Quim. Nova 2017, 40(4), 371-377

 

Selective hydrogenolysis of glycerol to propylene glycol in a continuous flow trickle bed reactor using copper chromite and Cu/Al2O3 catalysts

Jorge Sepúlveda1; Debora Manuale1; Lucia Santiago1; Nicolás Carrara1; Gerardo Torres1; Carlos Vera1; Maraisa Goncalves2,3; Wagner Carvalho2; Dalmo Mandelli2,*


Utilization of chromite or Cu/Al2O3 as catalyst for transformation of glycerol into value added materials: Higher selectivity for propylene glycol and acetol products.

http://dx.doi.org/10.21577/0100-4042.20170018

Publicado online: fevereiro 14, 2017
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Quim. Nova 2017, 40(4), 378-387

 

Avaliação do potencial uso de bioglicerina como base para formulação de fluidos de perfuração aquosos para poços de petróleo e gás

Cleysson C. Corrêa1; Georgiana F. da Cruz1,*; Alexandre S. L. Vaz Jr1; Bianca de S. A. Araújo1; Alexsandro A. da Silva2; Rafael A. Rodrigues2; Rosana F. T. Lomba3; Alex T. de A. Waldmann3


We propose to use the unique properties of the glycerin as an environmentally friendly alternative to the diesel or synthetic-based drilling fluids to formulation of drilling fluid for oil wells and gas.

http://dx.doi.org/10.21577/0100-4042.20170019

Publicado online: fevereiro 14, 2017
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Quim. Nova 2017, 40(4), 388-394

 

Thermal decomposition reaction in ethanol solution of deuterated acetone cyclic diperoxide and acetone diperoxide. Secondary inverse isotopic effect

Karina Nesprias1,2,*; Gladys Eyler2; Adriana Cañizo+,2; Gastón Barreto2


Acetone and deuterated acetone diperoxides.

http://dx.doi.org/10.21577/0100-4042.20170037

Publicado online: março 28, 2017
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Quim. Nova 2017, 40(4), 395-401

 

Comparative study of the inhibitive action between the bitter orange leaf extract and its chemical constituent linalool on the mild steel corrosion in HCl solution

Ashraf M. Abdel-Gaber1,2,*,#; Khadija M. Hijazi1; Ghassan O. Younes1; Bilal Nsouli3


The 3D images obtained from atomic force microscope (AFM) indicate that the reduction in the surface roughness of mild steel in the presence and absence of CA leaf extract and Linalool are in agreement with the results obtained from electrochemical impedance spectroscopy.

http://dx.doi.org/10.21577/0100-4042.20170020

Publicado online: fevereiro 14, 2017
PDF
Quim. Nova 2017, 40(4), 402-406

 

A conceptual dft study of the chemical reactivity of magnesium octaethylporphyrin (MgOEP) as predicted by the Minnesota family of density functionals

Juan Frau1; Francisco Muñoz1; Daniel Glossman-Mitnik1,2,*


The Minnesota family of density functionals has been assessed for the calculation of the Conceptual DFT descriptors of Magnesium Octaethylporphyrin (MgOEP).

http://dx.doi.org/10.21577/0100-4042.20170004

Publicado online: fevereiro 5, 2017
PDF
Quim. Nova 2017, 40(4), 407-412

 

Quantificação das emissões de CO2 pelo solo em áreas sob diferentes estádios de restauração no domínio da Mata Atlântica

Gabriel Ribeiro Castellano1,*; Leandro Xavier Moreno2; Amauri Antônio Menegário1; José Silvio Govone1; Didier Gastmans1


CO2 soil emissions measurements in reforested areas.

http://dx.doi.org/10.21577/0100-4042.20170036

Publicado online: março 27, 2017
PDF
Quim. Nova 2017, 40(4), 413-417

 

Computational study of the interaction between indene pyrazole and cyclin dependent kinase 2

Juan Enrique Torres; Juan Pablo Toro; Javier Vergara; Rosa Baldiris; Ricardo Vivas Reyes*


Correlation between biological activity and theoretical coupling of indene pyrazol ligands in CDK2 target.

http://dx.doi.org/10.21577/0100-4042.20170023

Publicado online: fevereiro 24, 2017
PDF Informação suplementar
Quim. Nova 2017, 40(4), 418-426

 

Avaliação de espectrômetro NIR portátil e PLS-DA para a discriminação de seis espécies similares de madeiras amazônicas

Liz F. Soares1,2; Diego C. da Silva1,2; Maria C. J. Bergo1,2; Vera T. R. Coradin1; Jez W. B. Braga2,*; Tereza C. M. Pastore1


Handheld Near Infrared spectrometer and PLS-DA has been successfully applied to discriminate between similar Amazonian wood species. The method can be applied for supervision of wood exploitation, contributing to the woody species preservation.

http://dx.doi.org/10.21577/0100-4042.20170014

Publicado online: fevereiro 10, 2017
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Quim. Nova 2017, 40(4), 427-435

 

Seleção de espécies do gênero Penicillium produtoras de lipase ligada ao micélio para aplicação em hidrólise de óleos vegetais

Braz S. Marotti1; Daniela V. Cortez1; Daniel B. Gonçalves2; Heizir F. de Castro1,*


Penicillium is a genus of Ascomycetes that occurs in a wide range of habitats and is considered a potential producer of both mycelium bound and extracellular lipases. Mycelium bound lipases were obtained from selected Penicillium sp and successfully applied to the hydrolysis of vegetable oils having different fatty acids composition.

http://dx.doi.org/10.21577/0100-4042.20170033

Publicado online: março 24, 2017
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Nota Técnica Quim. Nova 2017, 40(4), 447-453

 

Validação do processo de eletrocoagulação e avaliação da eletrodissolução de eletrodos no tratamento de efluentes de abatedouros de aves

Maria Paulina Mendoza Combatt1,*; Regina Célia Santos Mendonça1; Gerson de Freitas Silva Valente2; Cláudio Mudadu Silva3


Schematic diagram of electrocoagulation reactor proposed in this research and the electrodes used for testing the poultry slaughterhouse wastewater treatment.

http://dx.doi.org/10.21577/0100-4042.20170008

Publicado online: fevereiro 5, 2017
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Educação Quim. Nova 2017, 40(4), 454-455

 

Faculty and student goals for undergraduate laboratory#

Marcy H. Towns


Students hold entirely different goals that may pose obstacles for faculty achieving the goals they have set out. Herein we describe our research and propose methods of bringing these goals into better alignment.

http://dx.doi.org/10.21577/0100-4042.20170005

Publicado online: fevereiro 5, 2017
PDF
Quim. Nova 2017, 40(4), 456-464

 

How we have used item response theory and classroom management to improve student success rates in large general chemistry classes #

Brock L. Casselman; Braden R. Ohlsen; Charles H. Atwood*


Between 2015 and 2016, two major changes were introduced to the general chemistry courses: metacognitive training through practice tests and implementation of the flipped classroom. The result was a 6.1 average percentile improvement on the American Chemical Society nationally normed final exam.

http://dx.doi.org/10.21577/0100-4042.20170006

Publicado online: fevereiro 5, 2017
PDF
Quim. Nova 2017, 40(4), 465-468

 

An inquiry-based freshman biochemistry lab set to enhance students' autonomy#

Thanuci Silva; Eduardo Galembeck*


Students exposed to an inquiry-based laboratory environment improves long-lasting autonomy skills.

http://dx.doi.org/10.21577/0100-4042.20170039

Publicado online: março 29, 2017
PDF
Quim. Nova 2017, 40(4), 469-475

 

Studying student behavior and chemistry skill using browser-based tools and eye-tracking hardware#

Norbert J. Pienta*


Technology is being used extensively in instruction and is now part of research studies, including the use of eye-tracking hardware. The latter can be used to examine user's gaze location, duration and pattern (i.e., steps). The latter process is represented.

http://dx.doi.org/10.21577/0100-4042.20170025

Publicado online: março 9, 2017
PDF
Quim. Nova 2017, 40(4), 476-481

 

Exploring the design and use of molecular animations that conflict for understanding chemical reactions#

Resa M. Kelly1,*; Sarah J. R. Hansen2


Eye-tracking research supports the development of effective strategies for designing and presenting videos and animations created to assist students with making connections between macroscopic and molecular level behaviors of chemical reactions.

http://dx.doi.org/10.21577/0100-4042.20170043

Publicado online: abril 5, 2017
PDF

On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
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