Navegação Produção Científica por Título
Resultados 76142-76161 de 83319
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Synthesis and characterization of new chlorhexidine-containing nanoparticles for root canal disinfection
(2016) [Artigo de periódico]Root canal system disinfection is limited due to anatomical complexities. Better delivery systems of antimicrobial agents are needed to ensure efficient bacteria eradication. The purpose of this study was to design ... -
Synthesis and characterization of some novel tetrazole liquid crystals
(2013) [Artigo de periódico]The synthesis and characterization of new 4-[(2-alkyl)-2H-tetrazol-5-yl]phenyl 4-alkyloxybenzoates (5a–i) and 5-{4-[(4-substituted)benzyloxy]phenyl}-2-alkyl-2H-tetrazoles (7a–e) are reported. The reported tetrazoles contain ... -
Synthesis and enzymatic evaluation of the guanosine analogue 2-amino-6-mercapto-7-methylpurine ribonucleoside (MESG). Insights into the phosphorolysis reaction mechanism based on the blueprint transition state: sn1 or sn2
(2010) [Artigo de periódico]A modificação experimental para a síntese do MESG (2-amino-6-mercapto-7-metilpurina ribonucleosídeo) 1 foi realizada com sucesso e sua caracterização total apresentada. ESI(+)-MSMS em alta resolução foram realizados indicando ... -
Synthesis and mesomorphic properties of side chain liquid-crystalline biphenyl-phenyl polyacrylates
(2006) [Artigo de periódico]A síntese e a caracterização de dois cristais líquidos poliacrilatos, de cadeia lateral contendo o sistema bifenil-fenila como unidade central são descritos. A cadeia terminal é derivada da L-isoleucina. Em cada caso, o ... -
Synthesis and photophysical characterization of novel ESIPT triazinyl-benzazole derivatives
(2015) [Artigo de periódico]In this work, the synthesis, characterization and photophysical study of new derivatives of triazinyl-benzazoles with fluorescence by excited-state intramolecular proton transfer (ESIPT) are presented. It regards the ... -
Synthesis and thermal behavior of new liquid crystals arylaldoxime esters
(2012) [Artigo de periódico]Uma série de cristais líquidos derivados de ésteres arilaldoximas foi sintetizada e caracterizada via espectroscopia de 1H, 13C RMN, ATR/IV-FT e análise elementar. A estabilidade química e fotofísica desses compostos foram ... -
Synthesis and viscometric characterization of poly(N,N-dimethylacrylamide) for DNA separations
(2001) [Trabalho completo publicado em evento] -
Synthesis, characterization and application by HVOF of a WCCoCr/NiCr nanocomposite as protective coating against erosive wear
(2018) [Artigo de periódico]The scope of this work is to synthetize and characterize a WCCoCr/NiCr nanocomposite evaluating its application as protective coating against erosive wear when applied by High Velocity Oxygen Fuel (HVOF). The composite was ... -
Synthesis, characterization and catalytic evaluation of magnetically recoverable SrO/CoFe2O4 nanocatalyst for biodiesel production from babassu oil transesterification
(2018) [Artigo de periódico]Biodiesel production has gained a lot of attention due to its environmental benefits and production from renewable sources. Here, it is reported a magnetically recoverable catalyst of SrO immobilized on a CoFe2O4 support ... -
Synthesis, characterization and ethylene oligomerization studies of chromium complexes bearing imino-furfural ligands
(2014) [Artigo de periódico]A series of chromium(III) complexes bearing imino-furfural ligands (Cr1-Cr4) were synthesized and characterized by high-resolution mass spectrometry (HRMS). All chromium precatalysts, activated with methylaluminoxane (MAO), ... -
Synthesis, characterization and photophysical properties of ESIPT reactive triazine derivatives
(2012) [Artigo de periódico]Uma série de quatro compostos fotoativos derivados da triazina foi obtida a partir da substituição nucleofílica aromática no cloreto cianúrico. Os compostos foram caracterizados por espectroscopia de infravermelho (IR) e ... -
Synthesis of 2,4-disubstituted thiazole combinatorial unit on solid-phase : microwave assisted conversion of alcohol to amine monitored by ft-ir
(2005) [Artigo de periódico]Síntese em fase sólida com auxílio de radiação de microondas do tiazol 2,4-dissubstituído 3 com Resina Merrifield é descrita. As reações envolveram a conversão do grupo hidroxila em amina em cinco etapas – incluindo ... -
Synthesis of 5-hydroxymethylfurfural from dehydration of fructose and glucose using ionic liquids
(2014) [Artigo de periódico]The production of 5-hydroxymethylfurfural (HMF) from sugars dehydration is an alternative for obtaining starting materials for the production of polyesters, polyamides and polyurethanes, due to the development of the new ... -
Synthesis of alkylseleno-carbohydrates and evaluation of their antioxidant properties
(2015) [Artigo de periódico]In the present study, we describe the synthesis of alkylseleno carbohydrates with different sugar scaffolds and the evaluation of their antioxidant activity profile. A compound possessing a C8 alkyl chain presented the ... -
Synthesis of Bi2FexNbO7 films applied as a catalyst for hydrogen production using visible-light photo-electrolysis
(2019) [Artigo de periódico]The seek for feasible sustainable mobility alternatives is a major concern of the society nowadays. By its turn, the production of hydrogen represents one of the main lines of study on clean energy, since hydrogen presents ... -
Synthesis of cobalt ferrite (CoFe2O4) by combustion with different concentrations of glycine
(2019) [Artigo de periódico]Among the wide range of applications of Cobalt Ferrite (CoFe2O4), its usage for the manufacturing of modern electronic devices such as solar panels, capacitors and batteries has been studied´ lately. Hence, solar-powered ... -
Synthesis of Controllers for Continuous-Time Delay Systems with Saturating Controls via LMI's
(2000) [Artigo de periódico]The stabilization of linear continuous-time systems with time delay in the state and subject to saturating controls is addressed. Sufficient conditions obtained via a linear matrix inequality (LMI) formulation are stated ... -
Synthesis of dihydropyrimidin-2-one/thione library and cytotoxic activity against the human U138-MG and rat C6 glioma cell lines
(2011) [Artigo de periódico]Duas séries de 4-aril-3,4-diidropirimidin-2(1H)-(tio)onas incluindo monastrol (1a), foram sintetizadas por uma metodologia não agressiva ao meio ambiente baseada no uso combinado de ácido cítrico ou ácido oxálico na presença ... -
Synthesis of GaN by N ion implantation in GaAs (001)
(1995) [Artigo de periódico]Both the hexagonal and cubic GaN phases were synthesized in GaAs ~001! by 50 keV N ion implantation at 380 °C and subsequent furnace annealing at 850–950 °C for 10 min–2 h. For a fluence of 1.531017 cm22, transmission ... -
Synthesis of hydro-sodalite as a heterogeneous catalyst for reaction kinetics of soybean oil trans-esterification
(2018) [Artigo de periódico]coal fly ash as a catalyst, under reaction conditions with different temperatures and reaction times. The catalyst characterization revealed that zeolite type hydro-sodalite was synthesized and consists of mesoporous ...