JBCS



21:53, seg fev 17

Acesso Aberto/TP



vol. 39, No. 10, 2016



Artigo de Capa
Quim. Nova 2016, 39(10), 1236-1244

Como estudar interações entre nanopartículas e sistemas biológicos

Allan RadaicI; Gustavo Oliveira PuglieseI; Guilherme Capiraço CampeseI; Francisco Benedito Teixeira PessineII; Marcelo Bispo de JesusI,*

Cytotoxic effects of nanoparticles in eukaryotic cells. Amongst the major cytotoxic effects we can highlight the generation of Reactive Oxygen Species (ROS), and the damage to the membrane, proteins, mitochondria and DNA that could lead to cell death.

http://dx.doi.org/10.21577/0100-4042.20160146

Publicado online: agosto 16, 2016
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Total access: 5288

Artigo Quim. Nova 2016, 39(10), 1151-1158

 

A new Rhodamine B derivative RBMAB as a highly selective and sensitive chemosensor for Fe3+ with low detection limit

Wei ShenI,*; Lin WangII; Min ChenI; Hongfei LuII,#


A new Rhodamine B derivative RBMAB exhibits high selectivity toward Fe3+ among many other metal cations with a low detection limit of 0.021µm. Fluorescence microscopy experiments demonstrate that it can be used as a fluorescent probe to detect Fe3+ in living cells (L-02).

http://dx.doi.org/10.21577/0100-4042.20160152

Publicado online: agosto 25, 2016
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Quim. Nova 2016, 39(10), 1159-1164

 

Manufacture of nanosized apatite coatings on titanium with different surface treatments using a supersaturated calcification solution

Adrian Paz RamosI; Gabriel O. YbarraII; Leonardo M. PazosII; María B. ParodiII; Laura RodríguezII; Mónica López HernándezIII; Jesús E. González RuízIV,*


The biomimetic method allows the formation of bone-like apatite on titanium when using a solution containing calcium and phosphate ions. The titanol groups formed at the titanium surface ensure the chemical bonding and subsequently growth of the bioactive coating.

http://dx.doi.org/10.21577/0100-4042.20160161

Publicado online: agosto 30, 2016
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Total access: 1590

Quim. Nova 2016, 39(10), 1165-1169

 

Degradação fotocatalítica de tartrazina com TiO2 imobilizado em esferas de alginato

Ithiara Dalponte*; Alvaro Luiz Mathias; Regina Maria Matos Jorge; Regina Weinschutz


Production and characterization of alginate beads with TiO2 immobilized applied in the photocatalysis of the azo dye tartrazine.

http://dx.doi.org/10.21577/0100-4042.20160141

Publicado online: agosto 9, 2016
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Total access: 2431

Quim. Nova 2016, 39(10), 1170-1176

 

Elemental composition of PM10 and PM2.5 for a savanna (Cerrado) region of southern Amazonia

Franciele Bomfiglio SantannaI,*; Edilberto Ojeda de Almeida FilhoI; George Louis VourlitisII; Paulo Henrique Zanella de ArrudaI; Rafael da Silva PaláciosI; José de Souza NogueiraI


Map of Brazil depicting the State of Mato Grosso highlighted in dark grey to the centre of the map, in the southern part of the Legal Amazon Basin. Inset: Map of Mato Grosso with location of sampling site indicated by red dot.

http://dx.doi.org/10.21577/0100-4042.20160154

Publicado online: agosto 25, 2016
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Total access: 1719

Quim. Nova 2016, 39(10), 1177-1183

 

Ozônio troposférico e compostos orgânicos voláteis em região impactada pela agroindústria canavieira

Ana Paula FranciscoI,*; Débora de Souza AlvimII; Luciana Vanni GattiIII; Célia Regina PesqueroI; Joao Vicente de AssunçaoI


Tropospheric ozone and Volatile Organic Compound (VOC) concentrations during and after sugarcane emissions at an urban area.

http://dx.doi.org/10.21577/0100-4042.20160132

Publicado online: julho 20, 2016
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Total access: 2633

Quim. Nova 2016, 39(10), 1184-1191

 

Enzyme kinetic modelling and analytical solution of nonlinear rate equation in the transformation of D-methionine into L-methionine in batch reactor using the new homotopy perturbation method

Pavithra Sivasamy; Jansi Rani Palaniyandi Ganapathy; Iswarya Thinakaran; Rajendran Lakshmanan*


Kinetic scheme of D-AAO, L-PheDH, FDH and Coupled system of D - methionine bioconversion into L-methionine.

http://dx.doi.org/10.21577/0100-4042.20160155

Publicado online: agosto 25, 2016
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Total access: 2263

Quim. Nova 2016, 39(10), 1192-1199

 

Comparação entre a composição química e capacidade antioxidante de diferentes extratos de própolis verde#

Fernanda B. Salgueiro; Rosane N. Castro*


A multivariate analysis of chemical composition of commercial and in natura Brazilian green propolis.

http://dx.doi.org/10.21577/0100-4042.20160136

Publicado online: agosto 1, 2016
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Quim. Nova 2016, 39(10), 1200-1205

 

Aplicação da técnica de eletrodiálise no tratamento de efluentes de tingimento de gemas contendo íons nitrato e cromo

Maria de Lourdes Martins Magalhaes; Verônica Radaelli Machado; Eduardo Miranda Ethur; Simone Stülp*


The dyeing agate employs large quantities of potentially harmful wastewater to the environment, for example, metal ions. This paper showed that electrodialysis is an effective method for treating effluents containing chromium and nitrate, and reuse was investigated.

http://dx.doi.org/10.21577/0100-4042.20160137

Publicado online: agosto 1, 2016
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Quim. Nova 2016, 39(10), 1206-1214

 

Comparações entre medições em tempo real da pCO2 aquática com estimativas indiretas em dois estuários tropicais contrastantes: o estuário eutrofizado da Baía de Guanabara (RJ) e o estuário oligotrófico do Rio São Francisco (AL)

Luiz C. Cotovicz Jr.I,II,*,#; Bruno G. LibardoniI,II,#; Nilva BrandiniI,#; Bastiaan A. KnoppersI,#; Gwenaël AbrilI,II,#


We present a methodology for direct measurements of pCO2 in surface waters of two tropical Brazilian estuaries. Despite the good agreement between calculated and measured pCO2 in Guanabara Bay (GB), the Sao Francisco River Estuary (RSF) presented calculated overestimations.

http://dx.doi.org/10.21577/0100-4042.20160145

Publicado online: agosto 16, 2016
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Total access: 2662

Quim. Nova 2016, 39(10), 1215-1220

 

Híbridos de quitosana-argila para encapsulamento e liberação sustentada do fertilizante nitrato de potássio

Lucas L. MessaI; José Daniel FroesII; Claudinei F. SouzaII; Roselena FaezI,*


Chitosan microspheres were prepared as controlled release fertilizer; chitosanclay hybrid demonstrate to be an efficient system to potassium fertilizer in a desorption process; in situ, the electromagnetic technique was used for determination of the potassium content in soil.

http://dx.doi.org/10.21577/0100-4042.20160133

Publicado online: julho 20, 2016
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Total access: 2495

Quim. Nova 2016, 39(10), 1221-1224

 

One strain-many compounds (OSMAC) method for production of phenolic compounds using Camarops sp., an endophytic fungus from Alibertia macrophylla (Rubiaceae)#

Juliana R. GubianiI; Thomas R. HabeckI; Vanessa M. ChaplaII; Geraldo H. SilvaIII; Vanderlan S. BolzaniI; Angela R. AraujoI,*


Endophytic fungus Camarops sp. isolated from the leaves of Alibertia macrophylla, was used to produce seven phenolic derivatives through the one strain-many compounds (OSMAC) approach and identified by 2D NMR and HRESIMS spectra.

http://dx.doi.org/10.21577/0100-4042.20160169

Publicado online: setembro 20, 2016
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Total access: 2067

Quim. Nova 2016, 39(10), 1225-1235

 

Aplicação de amidoximas como catalisadores da reação de alilação por aliltrifluoroborato de potássio em meio bifásico

Dmistocles de AndradeI; Joao Rufino de Freitas FilhoI; Juliano Carlo Rufino FreitasI,II,*


We describe the application of an amidoxime as catalyst in the synthesis of homoallylic alcohols from the allylation reaction of aldehydes with different features using potassium allyltrifluoroborate.

http://dx.doi.org/10.21577/0100-4042.20160158

Publicado online: agosto 25, 2016
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Nota Técnica Quim. Nova 2016, 39(10), 1245-1253

 

Avaliação da eficiência do método TO-15 para determinação de compostos orgânicos voláteis em condições típicas de ambiente urbano

Cleyton Martins da SilvaI,II; Elaine Cesar C. A. SouzaII; Luane Lima da SilvaII; Rafael Lopes OliveiraII; Graciela ArbillaII; Sergio Machado CorrêaI,*


Determination of isoprene and anthropogenic volatile organic compounds in the city of Rio de Janeiro.

http://dx.doi.org/10.21577/0100-4042.20160142

Publicado online: agosto 5, 2016
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Total access: 3699

Educação Quim. Nova 2016, 39(10), 1254-1261

 

Influência das caraterísticas e da articulação das tarefas na qualidade das aprendizagens de química no ensino superior

Cristina M. C. Marques*; Joaquim B. Lopes; Maria Joao Carvalho


Evaluation of teaching and learning determines what features and sequences of tasks are relevant to the promotion of quality learnings.

http://dx.doi.org/10.21577/0100-4042.20160138

Publicado online: agosto 5, 2016
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Total access: 2179

Assuntos Gerais Quim. Nova 2016, 39(10), 1262-1268

 

Gilbert lewis e o centenário da teoria de ligação por par de elétrons#

Carlos A. L. Filgueiras


A distribuição dos elétrons nos vértices de um cubo, do lítio ao flúor, como foi descrita pela primeira vez no artigo de Lewis de 1916, The Atom and the Molecule.

http://dx.doi.org/10.21577/0100-4042.20160171

Publicado online: setembro 29, 2016
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Total access: 3447

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