Erlon R. Cordeiro; Antonio W. C. Fernandes; Alessandra F. C. Pereira; Mateus M. da Costa; Marcio L. F. Nascimento; Helinando P. de Oliveira
The strong interaction of S. aureus and polypyrrole inhibits bacterial growth in culture media and contributes to the progressive deposition of biofilms on polymeric support surfaces, thus allowing for the fast detection of bacteria.
Leonardo Cifuentes; Dorelys Flores; Lorean Madriz; Ronald Vargas
The electrochemical oxidation of an insecticide-lambdacyhalotrin-in an aqueous solution of a triton X-100 surfactant on a PbO2-Bi electrode has been evaluated. The results showed high levels of degradation that proceeded through the Langmuir-Hinshelwood kinetic mechanism.
Everton Luiz de Paula; Valdir Mano; Eliana Aparecida Rezende Duek; Fabiano Vargas Pereira
Bionanocomposites derived from poly(L-Lactide) were reinforced with chemically modified cellulose nanocrystals (m-CNCs). The effects of these modified cellulose nanoparticles on the mechanical and hydrolytic degradation behavior of the polylactide were studied.
Cristian J. Guerra; Jesús M. López; Said F. Figueredo; Adolfo E. Muñoz
Conceptual discrete Fourier transform (DFT) was used to understand the reactivity of activated carbon. Using this method, it was observed that activated carbon has electrophilic and nucleophilic sites, which allows it to be used as an adsorbent material for a variety of molecules.
Jean C. Cruz; Marina F. Reis; Marília M. Salvador; Marciano F. Almeida; Rodinei Augusti; Renata P. Lopes
Acetamiprid was fully degraded by Fe but not mineralized. The byproducts were characterized by direct infusion ESI-MS.
Rubén O. Muñoz-García; María E. Hernández; Genaro G. Ortiz; Víctor V. A. Fernández; Martín R. Arellano; Juan C. Sánchez-Díaz
Cellulose acetate (CA) reacts with acrylamide by a free radical reaction to produce crosslinked CA-poliacrylamide (CA-PAAm) hydrogels without the use of N,N'-methylenebisacrylamide as a crosslinker. These hydrogels exhibit low swelling capacity and high compression moduli, making them suitable for cartilage replacement applications.
Camila S. Inagaki; Andrea Eloisa da Silva Reis; Nayara M. Oliveira; Vitor H. Paschoal; Ítalo O. Mazali; Antonio A. S. Alfaya
A SiO2/TiO2 nanostructured composite that was synthesized using the sol-gel method exhibited photocatalytic activity under natural sunlight.
Lucas L. Franco; Mário C. Brandão; José D. S. Filho; Ricardo J. Alves
A new procedure for the preparation of β-N-glycosylsulfonamides that avoids the anomerization of the intermediate glycosylamines was developed using their corresponding ammonium tosylate salts in the presence of trimethylamine.
Jacqueline Kautz; Willian Feltrin; Eric S. Sales; Vera Lucia Eifler-Lima; Aloir A. Merlo
Glycerol derivatives for functional materials.
Raphaela V. Baracho; Lucas B. Carvalho; Jéssica M. Andrade; Adneia F. A. Venceslau; Denise A. Rocha; Luciana M. A. Pinto
A schematic for the formation of organic/inorganic hybrid materials suggests that the action of the binding agent, citric acid, covalently links cyclodextrin to the silica surface.
Carolina M. Furtado; Aline dos Santos Stolz; Fernanda L. Pinto; Angela B. D. Moura; Fernando Dal Pont Morisso; Ana Paula Pitarelo; Luiz Pereira Ramos; Carin von Mühlen; Izabel C. Riegel-Vidotti
Chromatographic characterization of the pyroligneous liquor of Acacia mearnsii de Wild: Black-wattle pyrolytic compounds as a source of chemicals of industrial interest, and a contribution to better process control in charcoal production.
Angelina M. de Almeida; Mauro V. de Almeida; Giovanni W. Amarante
Photoredox catalysis can excite organic compounds from visible light, thereby providing alternative mechanistic pathways for the formation of chemical bonds. This approach is especially relevant in green and sustainable chemistry.
Camila D. M. Campos; Richard P. S. de Campos; José A. Fracassi da Silva; Dosil P. Jesus; Ricardo M. Orlando
This review describes the fundamentals, advances, applications, and perspectives of using electric fields to enhance the speed and efficiency of sample preparation techniques.
Natielle Gianine Bueno; Airton Vicente Pereira
Extraction of peroxidase from radish and reaction with methyldopa.
Uanderson M. Garcia; Letícia F. Mendes; Janaina S. Santos; Francisco Trivinho-Strixino
A comparison of the benefits of anodization reactors shows that the hard anodization reactor is more productive and the mild anodization reactor is cheaper with a better cost-benefit ratio.
Maurício Temotheo Tavares; Marina Candido Primi; Michelle Carneiro Polli; Elizabeth Igne Ferreira; Roberto Parise-Filho
Drug-Receptor interactions: how to teach it?
Silvio Cunha; Carlos Eduardo Martins Iunes; Caio Costa Oliveira; Lourenço Luis Botelho de Santana
Synthesis of 3-coumarin-carboxylic acids via one-pot cyclization between salyciladehydes and Meldrum's acid in water and their application in the total synthesis of ayapin, coumarin, and umbeliferone.
Marcelo Gomes Speziali; Rubén Dario Sinisterra
Recent patent analysis has enabled to build an updated Technological Road Map. An assortment of ionic liquids technologies in Brazil was used as an example of the functionality of this technique. Patent Landscape used in conjunction with other indicators can be a useful tool for decision makers, scientists, and even investors when scientific trends, breakthroughs, or milestones are investigated.
On-line version ISSN 1678-7064 Printed version ISSN 0100-4042
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