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Mass spectrometry study of N-alkylbenzenesulfonamides with potential antagonist activity to potassium channels
(Amino Acids, 2015-09-22) [Artigo]
Herein, we report the synthesis and mass spectrometry studies of several N-alkylbenzenesulfonamides structurally related to sulfanilic acid. The compounds were synthesized using a modified Schotten-Baumann reaction coupled ...
Physical and mechanical properties of ceramics from clays of the west of S. Paulo State, Brazil
(Cerâmica, 2004-09-01) [Artigo]
Argilas de interesse da indústria de cerâmica estrutural foram caracterizadas. Algumas propriedades físicas de diversas massas cerâmicas, preparadas a partir de material coletado em depósitos artificiais, também foram ...
Propriedades reológicas e efeito da adição de sal na viscosidade de exopolissacarídeos produzidos por bactérias do gênero Rhizobium
(Química Nova, 2010-01-01) [Artigo]
Viscosity of some polysaccharide solutions supports that these molecules can be applied in food sectors. Four exopolysaccharides (R1, R2, R3, R4) produced by different Rhizobium strains were selected. Sugar composition and ...
Co-deposition of gold nanoparticles and metalloporphyrin using the langmuir-blodgett (LB) technique for Surface-Enhanced Raman Scattering (SERS)
(Applied Spectroscopy, 2015) [Artigo]
The synergistic effect produced by metallic nanoparticles when incorporated into different systems empowers a research field that is growing rapidly. In addition, organometallic materials are at the center of intensive ...
Evaluation of ricinus communis L. for the phytoremediation of polluted soil with organochlorine pesticides
(BioMed Research International, 2015) [Artigo]
Phytoremediation is an attractive alternative to conventional treatments of soil due to advantages such as low cost, large application areas, and the possibility of in situ treatment. This study presents the assessment of ...
Comportamento elétrico a alta temperatura de termistor cerâmico alfa-Fe2O3 com coeficiente de temperatura negativo
(Cerâmica, 2008-12-01) [Artigo]
O comportamento elétrico da cerâmica densa de α-Fe2O3, sintetizada pelo método Pechini, foi investigado por espectroscopia de impedância na faixa de freqüência de 5 Hz a 13 MHz. As medidas foram realizadas entre 298 K e ...
Nanoscale processing of polyaniline and phthalocyanines for sensing applications
(Sensors and Actuators B: Chemical, 2006-02-27) [Artigo]
Nanostructured polyaniline-modified electrodes were fabricated via the electrostatic layer-by-layer (LbL) technique where polyaniline (PANI) was assembled with one of three tetrasulfonated metallic phthalocyanines, viz. ...
Synthesis and structural characterization of Eu(III)-doped Zn7Sb2O12
(Journal of Materials Science, 2010-08-01) [Artigo]
In addition to the lanthanide series elements, Europium is one of the chemical elements of greatest interest for the development of species with oxidation state +3 (III), which leads to interesting electronic transitions. ...
Engenharia de microestrutura em varistor à base de ZnO: evidências de homogeneidade e correlação com reações químicas
(Cerâmica, 2005-03-01) [Artigo]
A influência de reações químicas específicas sobre o desenvolvimento microestrutural em varistores à base de ZnO é abordada a partir de um enfoque inovador. A relação entre alguns óxidos aditivos e suas reações com ZnO são ...
Photodegradation of phenol red on a Ni-doped niobate/carbon composite
(Ceramics International, 2014-08-01) [Artigo]
The photocatalytic activity of a new nanostructured Ni-doped niobate KSr2(Ni0.75Nb4.25)O15-delta was studied using the phenol red dye as a test molecule and the influence of amorphous carbon deposits upon the photoactivity ...