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  • Costa, Anna I. G.; Queiroz, Maria Eliana L. R.; Neves, Antônio A.; Assis, Roberta C. de; Soares, Carlos E. S. dos; Silva, Antônio A. da; D’Antonino, Leonardo; Oliveira, André F. de; Bellato, Carlos R. (Environmental Science and Pollution Research, 2014-09-23)
    A method has been optimized and validated for the determination of fomesafen in soils using solid–liquid extraction with low-temperature partitioning (SLE/LTP) and analysis by liquid chromatography with a high-efficiency ...
  • Vinhal, Jonas O.; Lage, Mateus R.; Carneiro, Jose Walkimar M.; Lima, Claudio F.; Cassella, Ricardo J. (Journal of Environmental Management, 2015-06-01)
    We studied the adsorption of paraquat onto polyurethane foam (PUF) when it was in a medium containing sodium dodecylsulfate (SDS). The adsorption efficiency was dependent on the concentration of SDS in solution, because ...
  • Reis, César; Reis, Efraim Lázaro; Silva, Claudinei Alves da (RECIE, 2006-01)
    Extração com água quente é o procedimento mais frequentemente usado na etapa inicial da determinação do boro disponível em solos. Por outro lado é um procedimento difícil de padronizar, consome tempo e a rotina usada é ...
  • Queiroz, Paula Viana; Tavares, Gabriella Peterlini; Soares, Filippe Elias de Freitas; Kasuya, Maria Catarina Megumi; Queiroz, José Humberto de; Santos, Fernando Almeida; Cardoso, Wilton Soares (Brazilian Journal of Microbiology, 2018-10)
    The multi-enzyme complex (crude extract) of white rot fungi Pleurotus ostreatus, Pleurotus eryngii, Trametes versicolor, Pycnosporus sanguineus and Phanerochaete chrysosporium were characterized, evaluated in the hydrolysis ...
  • Costa, Deyse G.; Capaz, Rodrigo B.; Henrique, Fábio J. F. S.; Oliveira, Felipe L.; Esteves, Pierre M. (Carbon, 2018-09)
    A new family of carbon allotropes, called n-diamondynes, is proposed based on the insertion of acetylide units between the sp3-hybridized carbon atoms of diamond. We perform density-functional theory calculations in order ...
  • Nain-Perez, Amalyn; Barbosa, Luiz C.A.; Rodríguez-Hernández, Diego; Kramell, Annemarie E.; Heller, Lucie; Csuk, René (Bioorganic & Medicinal Chemistry Letters, 17-01-28)
    In this study, we explore the cytotoxic activity of four natural abenquines (2a–d) and fourteen synthetic analogues (2e–j and 3a–h) against a panel of six human cancer cell lines using a SRB assay. It was found that most ...
  • Santos, Marcelo H. dos; Santos, Jorge A. N.; Kondo, Márcia Y.; Freitas, Renato F.; Ramalho, Teodorico C.; Assis, Diego M.; Juliano, Luiz; Juliano, Maria A.; Puzer, Luciano (Bioorganic & Medicinal Chemistry Letters, 2016-03-01)
    The human tissue kallikreins (KLK1–KLK15) comprise a family of 15 serine peptidases detected in almost every tissue of the human body and that actively participate in many physiological and pathological events. Some ...
  • Santos, Marcelo H.; Lage, Mateus R.; Morbec, Juliana M.; Carneiro, José Walkimar de M.; Costa, Luciano T. (Journal of Molecular Modeling, 2017-03-30)
    The quantum theory of atoms in molecules (QTAIM) and density functional theory (DFT) calculations were employed to investigate the structure and tautomeric equilibrium of epiclusianone, a polyisoprenylated benzophenone ...
  • Teixeira, Róbson Ricardo; Ricardo, Róbson; Oliveira, Ana Flávia Costa da Silveira; Silva, Adalberto Manoel da; Oliveira, André Silva de; Silva, Milene Lopes da; Silva, Cynthia Cânedo da; Paula, Sérgio Oliveira de (Molecules, 2014-06-17)
    Dengue is a neglected disease responsible for 22,000 deaths each year in areas where it is endemic. To date, there is no clinically approved dengue vaccine or antiviral for human beings, even though there have been great ...
  • Varejão, Jodieh O.S.; Barbosa, Luiz C.A.; Ramos, Gabriela Álvarez; Varejão, Eduardo V.V.; King-Díaz, Beatriz; Lotina-Hennsen, Blas (Journal of Photochemistry and Photobiology B:, 2015-03-01)
    Natural products called rubrolides have been investigated as a model for the development of new herbi- cides that act on the photosynthesis apparatus. This study comprises a comprehensive analysis of the photosynthesis ...
  • Andrade, Carlos Eduardo O.; Oliveira, André F.; Neves, Antônio A.; Queiroz, Maria Eliana L.R. (Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2016-06-06)
    EDTA is an important ligand used in many industrial products as well as in agriculture, where it is employed to assist in phytoextraction procedures and the absorption of nutrients by plants. Due to its intensive use and ...
  • Sato, André G.; Silva, Gabriel C.D.; Paganin, Valdecir A.; Biancolli, Ana L.G.; Ticianelli, Edson A. (Journal of Power Sources, 2015-10-30)
    Although ethanol can be directly employed as fuel on polymer-electrolyte fuel cells (PEMFC), its low oxidation kinetics in the anode and the crossover to the cathode lead to a substantial reduction of energy conversion ...
  • Vidigal, Antonio E. C.; Rubinger, Mayura M. M.; Queiroz, Luan F. de; Silva, Lucas F. da; Zambolim, Laércio; Guilardi, Silvana; Souza, Rafael A. C.; Ellena, Javier; Wetler, Emiliana B.; Oliveira, Marcelo R. L. (Inorganica Chimica Acta, 2019-02-24)
    Nickel(II) complexes of general formula [Ni(RSO2N = CS2)(PPh3)2] (2a–h) or [Ni(RSO2N = CS2)dppe] (3a–h), where R = methyl (a), ethyl (b), butyl (c), octyl (d), phenyl (e), 4-isopropylphenyl (f), 4-tert-butylphenyl (g), ...
  • Silva, Luis Henrique M. da; Silva, Maria C. Hespanhol da; Aquino, Roney A. N. de; Francisco, Kelly R.; Cardoso, Marcus V. C.; Minim, Luis A.; Coimbra, Jane S. R. (American Chemical Society, 2006-10-25)
    Ions are known to concentrate in the salt-enriched phase of aqueous two-phase systems, with the only known exception being the pertechnetate anion, TcO(4)(-). We have discovered a second ion, nitroprusside anion (NP), which ...
  • Oliveira, Ramon Prata; Demuner, Antonio Jacinto; Alvarenga, Elson Santiago; Barbosa, Luiz Claudio Almeida; Silva, Thiago de Melo (Journal of Molecular Structure, 2018-02-15)
    Pyrrolizidine alkaloids (PAs) are secondary metabolites found in Crotalaria genus and are known to have several biological activities. A novel macrocycle bislactone alkaloid, coined ethylcrotaline, was isolated and purified ...
  • Rodríguez-Hernández, Diego; Demuner, Antonio J.; Barbosa, Luiz C.A.; Heller, Lucie; Csuk, René (European Journal of Medicinal Chemistry, 2016-06-10)
    A series of novel aryl-1H-1,2,3-triazol-4-yl methylester and amide derivatives of the natural product hederagenin was synthesized aiming to develop new antitumor agents, using Huisgen 1,3-dipolar cycloaddition reactions, ...
  • Silva, Maria C. H. da; Silva, Luis H. M. da; Paggioli, Fernanda J. (Analytical Sciences, 2005-02-21)
    This work proposes a new method for Co(II) determination based on the use of the triblock copolymer as micellar medium instead of chloroform. The proposed strategy is environmental friendly because the copolymer is ...
  • Moraes, Fernanda C; Alvarenga, Elson S; Amorim, Kariny B; Demuner, Antonio J; Pereira‐Flores, Milton E (Pest Management Science, 2015-04-24)
    Faced with the need to develop herbicides with different modes of action on account of weed resistance to existing herbicides, the sesquiterpene lactones can be the starting point in the search for new bioactive compounds. ...
  • Santos, A. F. da S.; Souza, M. C. de; Diniz, R.; Maia, J. R. da S. (The Journal of Engineering and Exact Sciences, 2018)
    Zinc(II)-Schiff base derivatives of general formula [Zn(L)Cl] n.xH2O {n = 2; x = 1, L = 3- hmp (1), L = 4-hmp (2); x = 0, L = hmyp (3)} were synthesized by the condensation reaction of aminophenol with 2-hydroxybenzaldehyde. ...
  • Pereira, Wagner Luiz; Pires, Diego Arantes Teixeira; Teixeira, Róbson Ricardo; Figueroa-Villar, José Daniel; Nascimento, Claudia Jorge do (Journal of Molecular Structure, 2016-06-05)
    The keto-enol tautomerism of 3-(2-hydroxy-4,4-dimethyl-6-oxo-cyclohexen-1-yl)isobenzofuran- 1(3H-one (1), 3-(2-hydroxy-6-oxocyclohex-1-enyl)isobenzofuran-1(3H)-one (2), 3-(2- hydroxy- 4-methyl-6-oxocyclohex-1-enyl)isoben ...

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