JBCS



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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

AVALIAÇÃO DOS RESÍDUOS GERADOS DURANTE A DESTRUIÇÃO DE PCBS PELO PROCESSO CATALISADO POR BASE

Cassio P. Menini; Kassia S. Kanieski; Martinho J. Vichinheski; Tarcisio Loddi; Marco A. Marin; Marilda Munaro; Joseane V. Gulmine

With the reaction the PCBs are partially dechlorinated, forming less chlorinated congeners and aryl glycol compounds by the chemical bonding to the polyethylene glycol.

http://dx.doi.org/10.21577/0100-4042.20170232

Publicado online: abril 18, 2018
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SORÇÃO DE CO2 UTILIZANDO LÍQUIDO IÔNICO ADITIVADO COM EXTENSORES DE ÁREA SUPERFICIAL

André L. A. De Souza; Michele O. Vieira; Barbara B. Polesso; Fabiana W. Cobalchini; Franciele L. Bernard; Felipe Dalla Vecchia; Sandra Einloft

CO2 sorption using ionic liquid ([mbmim][Tf2N] and [bmim][BF4]) with glass microspheres K20 as surface area extenders.

http://dx.doi.org/10.21577/0100-4042.20170227

Publicado online: abril 10, 2018
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A HIGHLY SELECTIVE FLUORESCENT SENSOR FOR DETECTION OF TRIVALENT METAL IONS BASED ON A SIMPLE SCHIFF-BASE

Yongjie Ding; Chunxiang Zhao

A simple fluorescent sensor L showed good selectivity toward trivalent metal ions (such as Al3+, Fe3+, Cr3+, La3+ and Ce3+) over other monovalent or divalent metal ions.

http://dx.doi.org/10.21577/0100-4042.20170229

Publicado online: abril 10, 2018
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LEWIS ACID SITES OF Mg2+-MODIFIED POLYSTYRENE SULFONIC ACID RESIN CATALYSYS FOR SYNTHESIS OF DIBUTYL SUCCINATE

Cheng Jing; Liang Jinhua; Ding Zhongxie; Wang Yuehua; Liu Zhen; Jiang Min; Ren Xiaoqian

The protonation of the carbonyl moiety in the succinic acid activates the carbonyl carbon atom for nucleophilic attack of n-butanol followed by the desorption of the succinic acid monobutyl ester. After a new esterification process, the generated dibutyl succinate separated from the surface active sites of the catalyst.

http://dx.doi.org/10.21577/0100-4042.20170230

Publicado online: abril 10, 2018
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Adenanthera pavonina GALACTOMANNAN FOR CONTROLLED DELIVERY OF RUTIN - A PRELIMINARY STUDY

Karine A. Nobre; Carlos E. A. Soares; Ícaro G. P. Vieira; Raimundo R. de Almeida; Renato de A. Moreira; Tamara G. de Araújo; Maria E. N. P. Ribeiro; Nágila M. P. S. Ricardo

A new formulation for controlled drug delivery from water-swellable matrix systems was proposed.

http://dx.doi.org/10.21577/0100-4042.20170226

Publicado online: abril 4, 2018
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CONDENSAÇÃO ALDÓLICA DE FURFURAL E ACETONA CATALISADA POR BASES ORGÂNICAS NITROGENADAS: UM ESTUDO PRELIMINAR DE DESEMPENHO CATALÍTICO VISANDO A PRODUÇÃO DE BIOQUEROSENE DE AVIAÇÃO

Vinícius W. Faria; Guilherme C. Almeida; Cláudio J. A. Mota

Aldol condensation of furfural with acetone catalyzed by amines.

http://dx.doi.org/10.21577/0100-4042.20170225

Publicado online: abril 4, 2018
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SOLVENT SELECTION FOR CHEMICAL REACTIONS: AUTOMATED COMPUTATIONAL SCREENING OF SOLVENTS USING THE SMD MODEL

Ellen V. Dalessandro; Josefredo R. Pliego Jr.

Computational screening of solvents through full SMD calculations can be an useful approach for finding the best solvent of a chemical reaction.

http://dx.doi.org/10.21577/0100-4042.20170224

Publicado online: abril 2, 2018
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AVALIAÇÃO DE CARACTERÍSTICAS DE BIODIESEIS DE FONTES ALTERNATIVAS SUBMETIDOS A CONDIÇÕES DE ARMAZENAGEM DIFERENCIADA

Maria Juliane Suota; Edesio Luiz Simionatto; Dilamara Riva Scharf; Valnice Motta; Daniela Moser; Luciano Basto Oliveira; Luiz Roberto Martins Pedroso; Alberto Wisniewski Jr; Vinicyus Rodolfo Wiggers; Vanderleia Botton; Henry França Meier

Waste and residual triacylglycerols can be a valuable feedstock source to produce biodiesel. One of the main chemical aspects of quality is the oxidative stability of FAMEs during of storage process. We evaluate some specific conditions that can promote it.

http://dx.doi.org/10.21577/0100-4042.20170222

Publicado online: março 29, 2018
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EXTRAÇÃO EM FASE SÓLIDA DE RESÍDUOS DE AGROTÓXICOS DE ÁGUA SUPERFICIAL, EMPREGANDO UM SORVENTE DE MENOR RETENÇÃO

Carlos A. S. Aguiar Júnior; Nadja T. M. Silva; Dayane F. Soares; Anizio M. Faria

Extraction and pre-concentration of pesticides in surface water samples by SPE-HPLC-UV, using a low-cost lab-made SPE sorbent.

http://dx.doi.org/10.21577/0100-4042.20170223

Publicado online: março 29, 2018
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PHYTOCHEMISTRY INVESTIGATION OF Casearia arborea (RICH.) URB. (SALICACEAE) AND ANTIMICROBIAL ANALYSIS OF ITS DITERPENE

Maria D. Leite-Ferreira; Maria S. Rocha-Souza; Raphael R. de A. Ramirez; Otemberg S. Chaves; Yanna C. F. Teles; Fillipe de O. Pereira; Raimundo Braz-Filho; Edeltrudes de O. Lima; Rosangela do Socorro F. R. Sarquis; Tânia Maria Sarmento da Silva; Maria de Fátima Vanderlei de Souza

Seven compounds were isolated from Casearia arbórea using chromatographic methods and the antimicrobial activity of kolavelone, a clerodane diterpene, was evaluated.

http://dx.doi.org/10.21577/0100-4042.20170220

Publicado online: março 29, 2018
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SELF-ASSEMBLY AND HOST-GUEST BEHAVIORS OF A SUPRAMOLECULAR HELICATE FEII2L3

Xiao-Huan Fu; Wen-Yuan Wu; Peng Jiang; Zhen-Yu Han; Rong Wan

A novel helicate [Fe2L3]4+ resulted from the subcomponent self-assembly of a C3-symmetric triamine, iron(II) and 2-formylpyridine. The supramolecular studies showed that the size, functional group and symmetry of guest molecules remarkably influenced the host-guest interaction patterns.

http://dx.doi.org/10.21577/0100-4042.20170217

Publicado online: março 21, 2018
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PREPARAÇÃO, CARACTERIZAÇÃO FÍSICO-QUÍMICA E LIBERAÇÃO CONTROLADA DE MICROPARTÍCULAS DE GALACTOMANANA CONTENDO ALANTOÍNA

Hilana B. M. Frota; Jane Eire S. A. Menezes; Sônia Maria C. Siqueira; Nágila Maria P. Ricardo; Tamara G. Araújo; Carlos Alberto G. Souza; Paulo N. Bandeira; Hélcio S. dos Santos

Allantoin was encapsulated with galactomannan extruded from Delonyx regia.

http://dx.doi.org/10.21577/0100-4042.20170214

Publicado online: março 8, 2018
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AVALIAÇÃO DA ADSORÇÃO E ESTUDO ELETROQUÍMICO DE CÉLULAS SOLARES PRODUZIDAS COM TIO2 E CORANTE EXTRAÍDO DO HIBISCUS

Gideã T. Tractz; Guilherme A. R. Maia; Bianca V. Dias; Franciely Ignachewski; Paulo R. P. Rodrigues

Dye sensitized solar cell (DSSC) can be prepared with natural dyes, such as Hibiscus. Photovoltaic parameters and a model capable of predicting the adsorption mechanism of the dye on the TiO2 surface are investigated in this paper.

http://dx.doi.org/10.21577/0100-4042.20170212

Publicado online: março 8, 2018
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CHEMICAL COMPOSITIONS AND ANTIOXIDANT AND ANTIMICROBIAL ACTIVITIES OF PROPOLIS PRODUCED BY Frieseomelitta longipes AND Apis mellifera BEES

Edineide Cristina A. de Souza; Etyene Janyne G. da Silva; Hayron Kalil C. Cordeiro; Nauara M. Lage Filho; Felipe M. A. da Silva; Diany Lucy S. dos Reis; Carla Porto; Eduardo J. Pilau; Luiz Antonio M. A. da Costa; Afonso D. L. de Souza; Cristiano Menezes; Adriana Flach

Chemical compositions of the propolis of Apis mellifera and Frieseomelitta longipes and determination of their biological activities.

http://dx.doi.org/10.21577/0100-4042.20170208

Publicado online: fevereiro 28, 2018
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SÍNTESE E AVALIAÇÃO DA ATIVIDADE CITOTÓXICA DE DERIVADOS DO EUGENOL CONTENDO NÚCLEOS 1,2,3-TRIAZÓLICOS

Poliana Aparecida Rodrigues Gazolla; Róbson Ricardo Teixeira; Adalberto Manoel da Silva; Boniek Gontijo Vaz; Géssica Adriana Vasconcelos; Raoni Pais Siqueira; Victor Hugo Sousa Gonçalves; Higor Sette Pereira; Gustavo Costa Bressan

Triazolic derivatives of eugenol were prepared and had their cytotoxicity evaluated.

http://dx.doi.org/10.21577/0100-4042.20170206

Publicado online: fevereiro 22, 2018
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NEW ALKYL PHENOLS AND FATTY ACID PROFILE FROM OILS OF PULPED Spondias mombin L. SEED WASTES

Larissa C. de Rezende; Patricia de A. Santos; Valéria B. Riatto; Jorge M. David; Juceni P. David

Waste seed oils of Spondias mombin presents mostly unsaturated fatty acid, phytosteroids and two new alkenyl phenols.

http://dx.doi.org/10.21577/0100-4042.20170203

Publicado online: fevereiro 22, 2018
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COMO OBTER NANOPARTÍCULAS DE OURO USANDO SUCO DE LIMÃO?

Mariana F. Coura; Guilherme Arroyos; Lilian Cherubin Correia; Regina C. G. Frem

This work shows the use of lemon varieties as natural reducing agents for the preparation of gold nanoparticles from two different metallic precursors. UV-Vis spectra of the red colloidal solutions show bands at ~ 520 nm corresponding to particle sizes of 5-25 nm.

http://dx.doi.org/10.21577/0100-4042.20170202

Publicado online: fevereiro 22, 2018
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ÓXIDO DE ÍTRIO E ALUMÍNIO DOPADO COM Yb3+ E Er3+ INCORPORADO EM MEMBRANA DE POLIAMIDA

Michel L. de Souza; Susane B. Moscardini; Emerson H. de Faria; Katia J. Ciuffi; Lucas A. Rocha; Eduardo J. Nassar; Jorge V. L. Silva; Marcelo F. Oliveira; Izaque A. Maia

The article describes the incorporation of the yttrium aluminum oxide doped with Yb3+ and Er3+ incorporated into polyamide membrane obtained by Additive Manufacture. This work presents potential applications to transform infrared radiation into visible, upconversion.

http://dx.doi.org/10.21577/0100-4042.20170201

Publicado online: fevereiro 22, 2018
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REACTIVE MOLECULAR DYNAMICS SIMULATION AND CHEMICAL KINETIC EVALUATION OF COMBUSTION OF TRIETHYLALUMINIUM (TEA)

Rene F. B. Gonçalves; Koshun Iha; José A. F. F. Rocco

Potential energy variation for triethylaluminum combustion under different temperatures in NVE-MD simulations.

http://dx.doi.org/10.21577/0100-4042.20170200

Publicado online: fevereiro 22, 2018
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THERMOGRAVIMETRIC APPROACH FOR ASSESSING THE OXIDATION LEVEL OF A BIODIESEL SAMPLE

Luis Díaz-Ballote; Karen Gómez-Hernández; Elsy T. Vega-Lizama; Miguel A. Ruiz-Gómez; Luis Maldonado; Emanuel Hernández

Samples of biodiesel were first exposed to an accelerated oxidation process and then thermally decomposed. The final mass measured on the weight loss curve was used for assessing its oxidative level.

http://dx.doi.org/10.21577/0100-4042.20170199

Publicado online: fevereiro 8, 2018
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CORRELAÇÕES GEOQUÍMICAS ENTRE AMOSTRAS DE PETRÓLEO DA BACIA POTIGUAR E DEFINIÇÃO DE SUAS POSSÍVEIS ROCHAS GERADORAS

Jeferson Cavalcante Alves; Rennan Geovanny Oliveira Araujo; Eliane Soares de Souza; Sarah Adriana Rocha Soares; José Roberto Cerqueira; Karina Santos Garcia; Antonio Fernando de Souza Queiroz; Maria Goreti Rodrigues Vale; Aline Rocha Borges

The oil is made up of organic and inorganic components, in which identified and quantified through chromatographic analytical techniques and atomic spectrometry, which assists in the evaluation of the type of its generating rock and its depositional paleoenvironment.

http://dx.doi.org/10.21577/0100-4042.20170195

Publicado online: fevereiro 1, 2018
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AVALIAÇÃO DO DESEMPENHO DE UMA FASE SENSORA DE POLIURETANO POR MEIO DA ENERGIA DE GIBBS DE SOLVATAÇÃO E ESPECTROSCOPIA DE INFRAVERMELHO PARA DETERMINAÇÃO DE TOLUENO EM ÁGUA

Juliana D. C. Souza; Rogerio V. de Azevedo Júnior; Glória M. Vinhas; Nathalia B. D. Lima; Andréa M. S. S. Brito

We advance a computational strategy for the choice of sensing phases based on polymer matrices, for organic contaminants in water. This strategy was employed to evaluate a novel sensing phase of polyurethane, which was effective in determining toluene contaminant in water samples.

http://dx.doi.org/10.21577/0100-4042.20170194

Publicado online: fevereiro 1, 2018
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EVALUATING THE ACCUMULATION TREND OF L-DOPA IN DARK-GERMINATED SEEDS AND SUSPENSION CULTURES OF Phaseolus vulgaris L. BY AN EFFICIENT UV-SPECTROPHOTOMETRIC METHOD

Samira Rahmani-Nezhad; Shima Dianat; Mina Saeedi; Maliheh Barazandeh Tehrani; Adel Ghadiri; Abbas Hadjiakhoondi

A user-friendly and economical UV-spectrophotometric method was described to determine L-DOPA content in extracts from 33 biotypes of Phaseolus vulgaris L. The method is based on the nitrosation of L-DOPA to form a yellow solution and then formation of a red solution by adding base which is measurable at 470 nm.

http://dx.doi.org/10.21577/0100-4042.20170193

Publicado online: fevereiro 1, 2018
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INSECTICIDAL ACTIVITY OF DIENAMIDES ON CABBAGE CATERPILLAR AND BENEFICIAL INSECTS

Mayara Cristina Lopes; Elson Santiago Alvarenga; Alex Ramos Aguiar; Izailda Barbosa dos Santos; Gerson Adriano Silva; Lucas de Paula Arcanjo; Marcelo Coutinho Picanço

The dienamides synthesized were evaluated against the insect pest Ascia monuste, the natural enemy, and the pollinator. The dienamides were toxic to the pest and were selective in favor of the natural enemy and pollinator.

http://dx.doi.org/10.21577/0100-4042.20170192

Publicado online: fevereiro 1, 2018
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UTILITY OF FUNCTIONALIZED AGAROSE NANOPARTICLES IN HYDROLYZING LACTOSE IN BATCH REACTORS FOR DAIRY INDUSTRIES

Shakeel Ahmed Ansari; Syed Ismail Ahmad; Mohammad Alam Jafri; Muhammad Imran Naseer; Rukhsana Satar

Immobilization of β-galactosidase on galactose modified ANPs for hydrolyzing lactose.

http://dx.doi.org/10.21577/0100-4042.20170190

Publicado online: fevereiro 1, 2018
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SYNTHESIS, LARVICIDAL AND ACETYLCHOLINESTERASE INHIBITORY ACTIVITIES OF CARVACROL/THYMOL AND DERIVATIVES

Bruna M. de Mesquita; Patricia G. G. do Nascimento; Luciana G. S. Souza; Iolanda F. de Farias; Romézio A. C. da Silva; Telma L. G. de Lemos; Francisco J. Q. Monte; Irvila R. Oliveira; Maria T. S. Trevisan; Horlando C. da Silva; Gilvandete M. P. Santiago

Nine derivatives were prepared from carvacrol/thymol. The structures were confirmed by MS, IR and NMR, and acetylcholinesterase and larvicidal tests were performed.

http://dx.doi.org/10.21577/0100-4042.20170189

Publicado online: fevereiro 1, 2018
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HIDROGÉIS NANOCOMPÓSITOS DE POLISSACARÍDEO COM ZEÓLITA: AVALIAÇÃO DO PROCESSO DE ADSORÇÃO DO PESTICIDA PARAQUAT

Diego H. O. Barbosa; Marcia R. de Moura; Fauze A. Aouada

Water contamination cycle caused by paraquat pesticide, which can be prevented by using nanocomposite hydrogels based on polysaccharide and zeolite as proven by the UV-Vis spectrum of paraquat solution indicating their sorption into absorbent materials.

http://dx.doi.org/10.21577/0100-4042.20170188

Publicado online: fevereiro 1, 2018
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POLÍMERO BIODEGRADÁVEL ANTIMICROBIANO ATRAVÉS DA ADITIVAÇÃO COM COMPOSTOS À BASE DE ZINCO

Ana P. Capelezzo; Laura C. Mohr; Francieli Dalcanton; Carolina R. D. M. Barreta; Maria A. P. M. Martins; Márcio A. Fiori; Josiane M. M. de Mello

ZnO NPs and Zn MCs were incorporate to Ecoflex® by the extrusion process, obtaining the biodegradable antimicrobial polymer. This property was proved by the death curve test, with better results to the Zn MCs + Ecoflex®.

http://dx.doi.org/10.21577/0100-4042.20170187

Publicado online: fevereiro 1, 2018
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PHENOLIC DERIVATIVES AND ANTIOXIDANT ACTIVITY OF POLAR EXTRACTS FROM Bauhinia pulchella

Adonias Almeida Carvalho; Lucivania Rodrigues dos Santos; Ruth Raquel Soares de Farias; Mariana Helena Chaves; Chistiane Mendes Feitosa; Gerardo Magela Vieira Júnior; Mônica Regina Silva de Araújo; Paulo Michel Pinheiro Ferreira; Claudia do Ó Pessoa

EEF and EAF showed similar profiles by HPLC, with the presence of three flavonoids: myricitrin (1), quercitrin (2) and afzelin (3). In assay of TBARS and ABTS radical cation, EAF showed antioxidant potential higher than the EEF.

http://dx.doi.org/10.21577/0100-4042.20170183

Publicado online: janeiro 18, 2018
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CHROMATOGRAPHIC INVESTIGATION OF RUTHENIUM NITROSYL COMPLEX: NO INTERCONVERSION AND REACTIONS WITH BIOLOGICAL REDUCTANTS

Francisco O. N. da Silva; Dayana P. S. Penha; Ana E. V. de Alencar; Daniel de L. Pontes; Ana C. F. de B. Pontes; Eduardo H. S. Sousa; Luiz G. F. Lopes

The results showed that HPLC can be used as a powerful technique to monitor and characterize more complex reactions involving metal complexes such as nitrite/nitrosyl interconversion in ruthenium bipyridine complexes.

http://dx.doi.org/10.21577/0100-4042.20170181

Publicado online: janeiro 18, 2018
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Revisão

OS LANTANÍDEOS NAS REDES METALORGÂNICAS: UMA NOVA CLASSE DE MATERIAIS POROSOS

Ayla R. B. S. Galaço; Juliana F. Lima; Osvaldo A. Serra

Lanthanoid organic frameworks (LOFs)* stand out as an important class of functional materials due the optical, magnetic and redox properties. The main properties of these materials as, sensors, catalysis, luminescence and so on, is described in this review.

http://dx.doi.org/10.21577/0100-4042.20170219

Publicado online: março 21, 2018
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ÉTERES DIFENÍLICOS POLIBROMADOS (PBDE) COMO CONTAMINANTES PERSISTENTES: OCORRÊNCIA, COMPORTAMENTO NO AMBIENTE E ESTRATÉGIAS ANALÍTICAS

Daniel L. R. Annunciação; Fernanda V. Almeida; Emerson L. Y. Hara; Marco T. Grassi; Fernando F. Sodré

The spread of PBDEs is a subject of recent concern due to their adverse effects and persistency. Thus, it is important to assess their concentrations in different matrices in order to better understand their behavior and fate in the environment.

http://dx.doi.org/10.21577/0100-4042.20170218

Publicado online: março 21, 2018
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BUSCA VIRTUAL DE COMPOSTOS BIOATIVOS: CONCEITOS E APLICAÇÕES

Erika Piccirillo; Antonia Tavares do Amaral

Representation of a virtual screening procedure using a sequence of different filters (drug-like properties, pharmacophore or shape, similarity and docking) applied to a virtual database of molecules previously prepared.

http://dx.doi.org/10.21577/0100-4042.20170210

Publicado online: março 8, 2018
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O-GLICOSÍDEOS 2,3-INSATURADOS: APLICAÇÕES, REARRANJO DE FERRIER E REAÇÕES

Aldiceia Luiz de Moura; Lidiane Macedo Alves de Lima; Giselle Barbosa Bezerra; Jucleiton J. R. de Freitas; Mônica Freire Belian; Clécio Souza Ramos; Rodrigo André Avelino; João R. de Freitas Filho

This review summarizes recent developments, in the last twenty years, about the Ferrier rearrangement reaction involving synthesis, mechanistic proposal and application of 2,3-unsaturated O-glycosides.

http://dx.doi.org/10.21577/0100-4042.20170209

Publicado online: fevereiro 28, 2018
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BIOGENIC SYNTHESIS OF IMPORTANT ENVIRONMENTAL MINERALS: MAGNESIUM PHOSPHATE COMPOUNDS AND PERSPECTIVES

Nelson Durán; Wagner J. Favaro

Bacteria, fungi, yeast and Trypanosome biomineralizations play a critical role in biogeochemical cycles. These processes have important technological and environmental applications. This review shows the recent progress in biogenic magnesium phosphate compound.

http://dx.doi.org/10.21577/0100-4042.20170204

Publicado online: fevereiro 22, 2018
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APLICACIONES BIOMÉDICAS DE POLIURETANOS

Yomaira L. Uscategui; Luis E. Díaz; Manuel F. Valero

Medical applications of polyurethanes.

http://dx.doi.org/10.21577/0100-4042.20170191

Publicado online: fevereiro 1, 2018
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Nota Técnica

LIXIVIAÇÃO ÁCIDA DE BATERIAS ÍON-LÍTIO

Rafael Gundim Silva; Júlio Carlos Afonso; Claudio Fernando Mahler

Leaching of spent lithium-ion batteries under mild experimental conditions using weak and strong acids. Co(II) was extracted by D2EHPA at pH ~5. Lithium salts can be directly precipitated from the raffinate.

http://dx.doi.org/10.21577/0100-4042.20170207

Publicado online: fevereiro 22, 2018
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MÉTODOS AMBIENTALMENTE AMIGÁVEIS PARA A IODAÇÃO REGIOSSELETIVA DA 3,7,3',4'-TETRAMETOXI-QUERCETINA

Ingrid T. L. Ramos; Telma M. G. da Silva; Tania M. S. da Silva; Celso A. Camara

Environmental friendly methods for regioselective iodination of the 3,7,3',4'-tetramethoxy-quercetin. Neat reation and aprotic polar solvent selective C-6, protic polar solvent selective C-8 and excess iodine reagent selective di-iodination.

http://dx.doi.org/10.21577/0100-4042.20170205

Publicado online: fevereiro 22, 2018
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GLASSPANACEA: UM SOFTWARE EFICIENTE PARA A FORMULAÇÃO DE MATERIAIS CERÂMICOS

Renato Luiz Siqueira; José Henrique Alano; Oscar Peitl; Edgar Dutra Zanotto

GlassPanacea is an efficient software tool for ceramic materials formulation, providing the users with flexibility in the selection of chemicals, as well as speed and accuracy in the calculation of their relative proportions in a batch. The software is freely available from http://www.certev.ufscar.br/research-1/glasspanacea-glass-and-ceramic-formulation-software.

http://dx.doi.org/10.21577/0100-4042.20170196

Publicado online: fevereiro 1, 2018
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Educação

TOPOLOGIA DOS ORBITAIS MOLECULARES DE POLIENOS PARA DEDUZIR ENERGIAS RELATIVAS E AVALIAR AROMATICIDADE

Silvio Cunha

A didactic alternative approach is proposed for deducing molecular orbital topology of acyclic and cyclic conjugated polyenes, relative energies, and orbital degeneracy to cyclic polyenes and their aromatic or antiaromatic character.

http://dx.doi.org/10.21577/0100-4042.20170231

Publicado online: abril 10, 2018
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REVISITING IDEAL GASES AND PROPOSAL OF A SIMPLE EXPERIMENT FOR DETERMINING ATMOSPHERIC PRESSURE IN THE LABORATORY

Leonardo M. Da Silva; Arthur H. de Castro

Experimental apparatus for determining atmospheric pressure in the laboratory.

http://dx.doi.org/10.21577/0100-4042.20170221

Publicado online: março 29, 2018
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MEASURING THE CONDUCTIVITY OF VERY DILUTE ELECTROLYTE SOLUTIONS, DROP BY DROP

Leandro Martínez

The conductivity of millimolar electrolyte solutions can be studied in undergraduate laboratory experiments by dropping electrolyte solutions in deionized water.

http://dx.doi.org/10.21577/0100-4042.20170216

Publicado online: março 19, 2018
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ATIVIDADE FOTODINÂMICA E CONCEITOS: UM EXPERIMENTO DEMONSTRATIVO

Ana Claudia Pedrozo da Silva; Camila Fabiano de Freitas; André Luiz Tessaro; Wilker Caetano; Silvana Maria de Oliveira Santin; Noboru Hioka; Graciana Freitas Palioto

Methylene Blue and Erythrosine B showed photodynamic action in the inhibition of microbial growth after LED light exposure in a simple and didactic experiment. It can be applied in Chemistry courses allying advanced researches with basic concepts.

http://dx.doi.org/10.21577/0100-4042.20170215

Publicado online: março 19, 2018
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EXPERIMENTO COM ABACATE, BORRA DE CAFÉ, LICURI E LEITE DE COCO PARA EXTRAÇÃO DE ÓLEO, PRODUÇÃO DE BIODIESEL E ANÁLISE ESPECTRAL

Silvio Cunha; Marina Costa Rodrigues; Rosiene Reis Mattos; Leonardo Sena Gomes Teixeira; Airam Oliveira Santos; Elaine V. Santos; Rauan S. Souza; Givaldo dos Santos Andrade; Rodrigo De Paula; Djane S. de Jesus

Four alternative biomasses were applied in undergraduate organic chemistry experiment for oil extraction and biodiesel production. Infrared and hydrogen nuclear magnetic resonance spectra of oils, oil and biodiesel and biodiesels were compared.

http://dx.doi.org/10.21577/0100-4042.20170213

Publicado online: março 8, 2018
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EXPLAINING THE GEOMETRY OF SIMPLE MOLECULES USING MOLECULAR ORBITAL ENERGY-LEVEL DIAGRAMS BUILT BY USING SYMMETRY PRINCIPLES

Sérgio P. Machado; Roberto B. Faria

Qualitative energy-level molecular diagrams for different geometry allow to explain the preferred geometry of simple molecules on basis of the number of nonbonding electrons.

http://dx.doi.org/10.21577/0100-4042.20170198

Publicado online: fevereiro 8, 2018
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TOPOLOGIA UNIFICADA DOS ORBITAIS MOLECULARES DE FRONTEIRA PARA EXPLICAR REAÇÕES PERICÍCLICAS

Silvio Cunha

Pericyclic reactions can be classified according to the connectivity of reactants systems as connected atom reactions (CAR) and as not connected atom reactions (NOCAR). HOMO's topology is adequate to explain all CAR, while the HOMO-LUMO's topology explain all NOCAR.

http://dx.doi.org/10.21577/0100-4042.20170197

Publicado online: fevereiro 8, 2018
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UM ESTUDO TERMODINÂMICO DA CORROSÃO DOS AÇOS CARBONO PELO SULFETO DE HIDROGÊNIO - EXPLORANDO CONCEITOS DE EQUILÍBRIO QUÍMICO

Mariana Cristina de Oliveira; Alexandre Pereira de Lima; Rodrigo Monzon Figueredo; Heloisa Andréa Acciari; Eduardo Norberto Codaro

Schematic representation of possible reaction pathways in the corrosion of carbon steel by hydrogen sulfide.

http://dx.doi.org/10.21577/0100-4042.20170186

Publicado online: janeiro 18, 2018
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A METODOLOGIA DE RESOLUÇÃO DE PROBLEMAS: UMA EXPERIÊNCIA PARA O ESTUDO DAS LIGAÇÕES QUÍMICAS

Franciane S. C. de Lima; Leliz T. Arenas; Camila G. Passos

This figure represents the interrelationship between different aspects that can be analyzed on the teacher formation from this experience.

http://dx.doi.org/10.21577/0100-4042.20170179

Publicado online: dezembro 20, 2017
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POR QUE ESCOLHI FAZER UM CURSO DE LICENCIATURA? PERFIL E MOTIVAÇÃO DOS INGRESSANTES DA UNESP

Amadeu Moura Bego; Tarso Bortolucci Ferrari

The findings show that the majority of undergraduate students in chemistry at the São Paulo State University take the course for reasons that are essentially motivated by intrinsic factors.

http://dx.doi.org/10.21577/0100-4042.20170159

Publicado online: novembro 28, 2017
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DETERMINAÇÃO DE SÓDIO EM CACHAÇA POR ESPECTROMETRIA DE EMISSÃO ATÔMICA: EFEITO DAS PROPRIEDADES FÍSICO-QUIMICAS DA SOLUÇÃO

Junia Graziele Pereira; Luiz Antonio Ramos; Éder Tadeu Gomes Cavalheiro; Joaquim de Araújo Nóbrega

Analytical calibration curves for sodium ions in flame atomic emission spectrometry: effect of solvent composition.

http://dx.doi.org/10.21577/0100-4042.20170158

Publicado online: novembro 28, 2017
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Assuntos Gerais

CONSIDERAÇÕES SOBRE TEXTOS QUE TRATAM DO DESENVOLVIMENTO DE METALOFÁRMACOS DE RUTÊNIO

Sofia Nikolaou; Camila F. N. da Silva

This work proposes a discussion on the construction of texts that deal with the biological properties of ruthenium complexes and their application as metallodrugs, aiming to criticize the misuse of some generalizations about the chemistry of this element.

http://dx.doi.org/10.21577/0100-4042.20170228

Publicado online: abril 10, 2018
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INOVAÇÃO E PROPRIEDADE INTELECTUAL DOS 1,2,4-OXADIAZÓIS: UMA PROSPECÇÃO TECNOLÓGICA FUNDAMENTADA EM BASE DE DADOS DE PATENTES E PERIÓDICOS

Erick Caique Santos Costa; Jucleiton José Rufino de Freitas; Juliano Carlo Rufino Freitas

1,2,4-Oxadiazoles are heterocyclic with a broad spectrum of applications. Given this, the present search aimed at analyzing the potential and evolution of the technology involved in oxadizoles application through research papers and publications of patent applications.

http://dx.doi.org/10.21577/0100-4042.20170211

Publicado online: março 8, 2018
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PERSPECTIVAS DA QUÍMICA MEDICINAL PARA O SÉCULO XXI: DESAFIOS E OPORTUNIDADES

Carolina Horta Andrade; Arthur E. Kümmerle; Rafael V. C. Guido

In the 21st century, medicinal chemists will face many challenges to improve the quality of life of populations. The challenges consist of emerging infectious and non-communicable diseases. To combat them, innovative technologies shall be developed.

http://dx.doi.org/10.21577/0100-4042.20170182

Publicado online: janeiro 18, 2018
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