JBCS



6:02, ter jul 16








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.

Artigos no Prelo


Artigos

SYNTHESIS AND THEORETICAL STUDY OF HPW CATALYSTS SUPPORTED ON NIOBIA CALCINATED AT 500 AND 600 °C

Claudia V. Lacerda; Livia C. T. Lacerda; Alexandre A. de Castro; Tanos C. C. França; Teodorico C. Ramalho; Nadine Essayem; Wilma de A. Gonzalez

Most likely way of binding on the niobia surface of HPW catalysts supported on niobia, calcinated at 500 and 600 °C, according to theoretical calculations.

http://dx.doi.org/10.21577/0100-4042.20170386

Publicado online: julho 11, 2019
PDF

OTIMIZAÇÃO DAS CONDIÇÕES FERMENTATIVAS DE Pichia membranifaciens PARA PRODUÇÃO DE ETANOL DE SEGUNDA GERAÇÃO

Natália N. Ribeiro; Lidyane A. Freita; Letícia F. Tralli; Aline F. Silva; Cristhyane M. Freita; Franciele Q. Mendes; Vitor Teixeira; Calisto N. S. Junior; Márcia J. R. Mutton

The production of ethanol from the use of lignocellulosic materials is already a reality, however the study of new microorganisms capable of fermenting sugars with five carbons is essential for improving the fermentative conditions of the processes.

http://dx.doi.org/10.21577/0100-4042.20170385

Publicado online: julho 11, 2019
PDF

ANALYSIS OF THE CHEMICAL REACTIVITY OF INDAZIFLAM HERBICIDE AND ITS METABOLITES THROUGH GLOBAL AND LOCAL REACTIVITY DESCRIPTORS

Luis Humberto Mendoza-Huizar; Clara Hilda Rios-Reyes; Giaan Arturo Álvarez-Romero; María Elena Páez-Hernández

Condensed Fukui Function and dual chemical reactivity descriptor for indaziflam. In all cases the isosurfaces were obtained at 0.008 e/u.a.3, broken circles show the more reactive zones in the molecule.

http://dx.doi.org/10.21577/0100-4042.20170382

Publicado online: julho 1, 2019
PDF

CUPROUS OXIDE NANOPARTICLES: PREPARATION AND EVALUATION OF ANTIFOULING ACTIVITY

Wei-Zhao Shi; Ying-Shuang Liang; Bingxing Lu; Mengting Chen; Yanwei Li; Zhiheng Yang

The preparation procedure of Cu2O nanoparticles.

http://dx.doi.org/10.21577/0100-4042.20170374

Publicado online: junho 26, 2019
PDF

ORGANIC MATTER COMPOSITION RELATED TO METHANE EBULLITIVE FLUX OF AN URBAN COASTAL LAGOON, SOUTHEASTERN BRAZIL

Alessandra da Fonseca Viana; Marco Aurélio dos Santos; Marcelo Corrêa Bernardes; Marcelo Amorim

The present study investigates the origin of organic matter that reaches a coastal, urban and eutrophic lagoon in Rio de Janeiro, Brazil and compares with the data from methane ebullitive flux.

http://dx.doi.org/10.21577/0100-4042.20170373

Publicado online: junho 26, 2019
PDF

IMPACTOS DA MUDANÇA DE VEGETAÇÃO LOCAL NO APORTE DE MATÉRIA ORGÂNICA PARA UM ESTUÁRIO TROPICAL PRESERVADO (ESTUÁRIO DO RIO ITAPICURU - BA)

Lucas M. Guimarães; Tiago de Abreu C. Lima; Elvis Joacir De França; Gilberto N. de Arruda; José Roberto B. de Souza; Ana Cecília R. de Albergaria-Barbosa

Temporal changes in concentrations and type of organic matter deposited were evaluated by the analysis of n-alkanes and stable isotopes (δ13C and δ15N) in a sediment core collected on the estuary banks.

http://dx.doi.org/10.21577/0100-4042.20170370

Publicado online: maio 23, 2019
PDF Informação suplementar

IDENTIFICATION OF AROMA-ACTIVE VOLATILE COMPOUNDS IN Pouteria sapota FRUIT BY AROMA EXTRACTION DILUTION ANALYSES (AEDA)

Diana A. Martín; Coralia Osorio

The aroma active volatile compounds of Pouteria sapota fruit were identified on the SAFE extract by combination of sensory (AEDA) and instrumental (GC-MS) analyses.

http://dx.doi.org/10.21577/0100-4042.20170369

Publicado online: maio 23, 2019
PDF

INIBIÇÃO DO CRESCIMENTO DE MICRORGANISMOS PATOGÊNICOS INDUZIDA POR BUTENOLÍDEOS ANÁLOGOS AOS CADIOLÍDEOS

Simone Z. Mairink; Luiz C. A. Barbosa; Célia R. A. Maltha; Jodieh O. S. Varejão; Geane P. Oliveira; Jacqueline A. Takahashi; John Boukouvalas

21 compounds analogous to cadiolides were prepared from 4 synthesized butenolides. The compounds were evaluated against 5 pathogenic microorganisms and four of the most active against S. aureus presented IC50 in the range of 1.8-6.0 µg mL-1.

http://dx.doi.org/10.21577/0100-4042.20170368

Publicado online: maio 22, 2019
PDF Informação suplementar

Revisão

DESIGN OF IMMOBILIZED ENZYME BIOCATALYSTS: DRAWBACKS AND OPPORTUNITIES

Carla Luzia Borges Reis; Emerson Yvay Almeida de Sousa; Juliana de França Serpa; Ravena Casemiro Oliveira; José Cleiton Sousa dos Santos

In this study, we aimed to discuss the versatility of biocatalysts immobilized enzymes design, focusing on the opportunities and disadvantages for each method presented.

http://dx.doi.org/10.21577/0100-4042.20170381

Publicado online: julho 1, 2019
PDF

ENDOPHYTIC FUNGI FROM THE BRAZILIAN FLORA AND THEIR EMPLOYMENT IN BIOTRANSFORMATION REACTIONS

Valmore Henrique Pereira dos Santos; Eliane de Oliveira Silva

Distinct substrates can be successfully biotransformed by the Brazilian endophytic fungi conducting to wide chemodiversity.

http://dx.doi.org/10.21577/0100-4042.20170380

Publicado online: junho 27, 2019
PDF

SEMICONDUTORES HETEROESTRUTURADOS: UMA ABORDAGEM SOBRE OS PRINCIPAIS DESAFIOS PARA A OBTENÇÃO E APLICAÇÃO EM PROCESSOS FOTOQUÍMICOS AMBIENTAIS E ENERGÉTICOS

Romero T. Bueno; Osmando F. Lopes; Kele T. G. Carvalho; Caue Ribeiro; Henrique A. J. L. Mourão

Heterostructured semiconductors used in different photochemical processes for environmental and energy applications. The suitable structural connection enables the charge transfer between the semiconductors.

http://dx.doi.org/10.21577/0100-4042.20170372

Publicado online: maio 27, 2019
PDF Informação suplementar

AVANÇOS RECENTES NA QUÍMICA DOS AMINOAÇÚCARES: OCORRÊNCIA, BIOSSÍNTESE, SÍNTESE E APLICAÇÃO

Aldicéia Luiz de Moura; Bruna Martins Guimarães; Josefa Aqueline da Cunha Lima; Mauricélia M. Sousa Mata; Jadson Farias da Silva; Ronaldo N. Oliveira; Juliano Carlo Rufino de Freitas; João R. de Freitas Filho

This review summarizes recent developments, about the occurrence, biosynthesis, synthesis and application of amino sugars.

http://dx.doi.org/10.21577/0100-4042.20170357

Publicado online: abril 17, 2019
PDF

Nota Técnica

SUPERHYDROPHOBIC SILICON FABRICATED BY PHOSPHOMOLYBDIC ACID-ASSISTED ELECTROCHEMICAL ETCHING

Yanbiao Zhou; Kaige Qu; Lihui Zhang; Binghua Liao

Superhydrophobic silicon surfaces with water contact angle larger than 150° and sliding angle less than 10° have been successfully fabricated by electrochemical etching strategy. Squarelike hole arrays with controllable geometries, especially controllable hole width and depth were formed on silicon. The relatively stable superhydrophobic silicon exhibited good self-cleaning and water-proofing properties in air and oil.

http://dx.doi.org/10.21577/0100-4042.20170384

DETERMINAÇÃO DE DESIGNER DRUGS EM SALIVA POR PAPER SPRAY MASS SPECTROMETRY

Lanaia Ítala L. Maciel; Thays C. Carvalho; Igor Pereira; Boniek G. Vaz

A method has been optimized for quantification of methamphetamine, 3,4-methylenedioxyamphetamine (MDA) and 3,4-methylenedioxy-N-methylamphetamine (MDMA) from saliva samples. Rapid analysis (~ 1 min) of designer drugs in saliva is demonstrated using PSI-MS with a Molecularly Imprinted Polymer (MIP) coated paper as substrate.

http://dx.doi.org/10.21577/0100-4042.20170379

Publicado online: junho 27, 2019
PDF

EXTRATO DE HIBISCO-COLIBRI COMO INIBIDOR VERDE DE CORROSÃO DO AÇO-CARBONO EM ÁCIDO SULFÚRICO

Arthur Valbon; Bruno F. Ribeiro; Maria Augusta F. Soares; Márcia C. C. de Oliveira; Marcelo A. Neves; Aurea Echevarria

Malvaviscus arboreus as an efficient corrosion green inhibitor to carbon steel.

http://dx.doi.org/10.21577/0100-4042.20170378

Publicado online: junho 26, 2019
PDF

RECUPERAÇÃO DE ACETONA EM RESÍDUOS LABORATORIAIS: UMA ABORDAGEM SOBRE ASPECTOS DA GESTÃO, OPERACIONAIS E DA EFICIÊNCIA AMBIENTAL

Guilherme Furlan Coletti; Glauco Arnold Tavares; José Albertino Bendassolli

Difference of environmental impacts between distillation and incineration using Eco-indicator 99, Ecosolvent software.

http://dx.doi.org/10.21577/0100-4042.20170361

Publicado online: abril 22, 2019
PDF

Educação

HYBRID ATOMIC ORBITALS IN ORGANIC CHEMISTRY. PART 2: CRITIQUE OF PRACTICAL ASPECTS

Guy Lamoureux; John F. Ogilvie

In Part 2, a review of the use of hybrid atomic orbitals in organic chemistry is provided and further critiques of their use in teaching are included. A pedagogical alternative to hybridization, which is observable, free from interpretation and consistent with experiments is presented.

http://dx.doi.org/10.21577/0100-4042.20170377

Publicado online: junho 26, 2019
PDF

HYBRID ATOMIC ORBITALS IN ORGANIC CHEMISTRY. PART 1: CRITIQUE OF FORMAL ASPECTS

Guy Lamoureux; John F. Ogilvie

In Part 1, a review of hybrid atomic orbitals is provided and a critique of their use in undergraduate organic chemistry education is introduced.

http://dx.doi.org/10.21577/0100-4042.20170376

Publicado online: junho 26, 2019
PDF

EDUCAÇÃO PARA AS RELAÇÕES ÉTNICO-RACIAIS NA FORMAÇÃO DE PROFESSORES DE QUÍMICA: SOBRE A LEI 10.639/2003 NO ENSINO SUPERIOR

Marysson Jonas Rodrigues Camargo; Anna Maria Canavarro Benite

It is the duty of the university to train qualified teachers to implement Education for Ethnic-Racial Relations. This article brings the experience of the Collective Ciata to contribute with discussions pointing theoretical-methodological paths for professors of Chemistry.

http://dx.doi.org/10.21577/0100-4042.20170375

Publicado online: junho 26, 2019
PDF

O ANO INTERNACIONAL DA TABELA PERIÓDICA E O ENSINO DE QUÍMICA: DAS CARTAS AO DIGITAL

Bruno S. Leite

This article analyzes in the chemistry journals how the Periodic Table has been used in the Chemistry teaching and what didactic strategies were used.

http://dx.doi.org/10.21577/0100-4042.20170359

Publicado online: abril 18, 2019
PDF

On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
Química Nova
Publicações da Sociedade Brasileira de Química
Caixa Postal: 26037 05513-970 São Paulo - SP
Tel/Fax: +55.11.3032.2299/+55.11.3814.3602
Free access

GN1