Search Results - "Morais, W A"

Encapsulation of trans-dehydrocrotonin in liposomes: an enhancement of the antitumor activity by Lapenda, T L S, Morais, W A, Almeida, F J F, Ferraz, M S, Lira, M C B, Santos, N P S, Maciel, M A M, Santos-Magalhães, N S

“…The aim of this study was the encapsulation of trans-dehydrocrotonin (t-DCTN) and its inclusion complexes with hydropropyl-beta-cyclodextrin (HP-beta-CD) in…”
Get more information

Evaluation of repeated low energy impact damage in carbon–epoxy composite materials by de Morais, W.A., Monteiro, S.N., d'Almeida, J.R.M.

“…The effect of repeated low energy impact on the performance of carbon–epoxy composites with three different stacking sequences was evaluated. The evolution of…”
Get full text

Effect of the laminate thickness on the composite strength to repeated low energy impacts by de Morais, W.A., S.N.Monteiro, d’Almeida, J.R.M.

“…The influence of laminate thickness on the resistance to repeated low energy impacts of glass, carbon and aramid fabrics reinforced composites, was evaluated…”
Get full text

The influence of oxidative degradation on the preparation of chitosan nanoparticles by FERNANDES, A. L. P, MORAIS, W. A, FONSECA, J. L. C, SANTOS, A. I. B, DE ARAUJO, A. M. L, DOS SANTOS, D. E. S, DOS SANTOS, D. S, PAVINATTO, F. J, OLIVEIRA, O. N, DANTAS, T. N. C, PEREIRA, M. R

“…Chitosan nanoparticles were obtained via ionic crosslinking by using the sulfate ion. Chitosan molecular weight was varied by oxidative degradation of the…”
Get full text

Preparation and characterization of dispersions based on chitosan and poly(styrene sulfonate) by de Lima, C. R. M., de Morais, W. A., Silva, G. T. M., Nunes, J. S., Wanderley Neto, A. O., Pereira, M. R., Fonseca, J. L. C.

“…Interpolyelectrolyte complexes (IPECs) were obtained by the mixture of solutions of chitosan and poly(sodium 4-styrene-sulfonate). The resultant dispersions…”
Get full text

Formation and structure of chitosan-poly(sodium methacrylate) complex nanoparticles by de Lima, C. R. M., de Souza, P. R. S., Stopilha, R. T., de Morais, W. A., Silva, G. T. M., Nunes, J. S., Wanderley Neto, A. O., Pereira, M. R., Fonseca, J. L. C.

“…Interpolyelectrolyte complex (IPEC) dispersions were prepared from chitosan and poly(sodium acrylate), NaPMA, by mixing their solutions, at different…”
Get full text

Dispersing phase viscometry and zeta potential in alumina dispersions by DE VASCONCELOS, C. L, DE MOURA, K. T, MORAIS, W. A, DANTAS, T. N. C, PEREIRA, M. R, FONSECA, J. L. C

“…The stabilities of alumina dispersions were studied as a function of poly- and low molecular weight electrolyte concentration, using viscometry of the…”
Get full text

Dynamic light scattering in semidilute and concentrated chitosan solutions by de Oliveira, V.A.V., de Morais, W.A., Pereira, M.R., Fonseca, J.L.C.

“…Scheme representing an entanglement between two chitosan macromolecular coils, favored by the hydrophobic effect. [Display omitted] ► Dynamic light scattering…”
Get full text

Equilibrium and kinetic analysis of methyl orange sorption on chitosan spheres by Morais, W.A., de Almeida, A.L.P., Pereira, M.R., Fonseca, J.L.C.

“…Chitosan can be used as adsorbent in the treatment of effluents from the textile industry, especially for negatively charged dyes, due to its cationic…”
Get full text

Sorption studies of a model anionic dye on crosslinked chitosan by Morais, W.A., Fernandes, A.L.P., Dantas, T.N.C., Pereira, M.R., Fonseca, J.L.C.

“…The sorption of Methyl Orange by chitosan crosslinked particles was approached using equilibrium and kinetic analyses at different pH’s. Besides the standard…”
Get full text

Dynamic and static radiation scattering in a microemulsion as a function of dispersed phase concentration by de Morais, W.A., da Silva, G.C., Caroni, A.L.P.F., Neto, A.A. Dantas, Dantas, T.N.C., Fonseca, J.L.C.

“…•DLS and SAXS can be used to characterize sphere/worm-like transitions in microemulsions.•Increase in characteristic relaxation rate from DLS indicates this…”
Get full text

The relationship between rheology and dynamic light scattering for a xylene/water/ButOH/C12E9 microemulsion by da Silva, G.C., de Morais, W.A., Neto, A.A. Dantas, Dantas, T.N.C., Fonseca, J.L.C.

“…A drastic change in apparent flow activation enthalpy (the slope of lnη0versus 1/T curve) indicates a transition between nanodrop/worm-like geometries…”
Get full text

RHEOLOGY OF INVERSE EMULSIONS WITH CHITOSAN, CTAB, AND CYCLOHEXANE by dos Santos, Z. M., Morais, W. A., de Sousa, E. A., Dantas Neto, A. A., Dantas, T. N. C., Pereira, M. R., Fonseca, J. L. C.

“…Inverse emulsions consisting of chitosan solution as the dispersed phase and cyclohexane as the continuous phase were obtained, using cetyl trimethylammonium…”
Get full text

Characterization of gelification of chitosan solutions by dynamic light scattering by de Morais, W.A., Pereira, M.R., Fonseca, J.L.C.

“…► The kinetics of chitosan crosslinking by glutaraldehyde can be monitored using DLS data coupled to the KWW equation. ► Gelification time can be characterized…”
Get full text

Interpolyelectrolyte complex formation: From lyophilic to lyophobic colloids by de Morais, W.A., Silva, G.T.M., Nunes, J.S., Wanderley Neto, A.O., Pereira, M.R., Fonseca, J.L.C.

“…[Display omitted] •IPEC particles were formed from chitosan (CS) and an anionic polyelectrolyte (PSSMA).•Turbidity, conductivity, and viscosity indicated best…”
Get full text

Cinética de secagem e difusividade efetiva em folhas de jenipapo (Genipa americana L.) by SILVA, L.A., RESENDE, O., VIRGOLINO, Z.Z., BESSA, J.F.V., MORAIS, W.A., VIDAL, V.M.

“…RESUMO O jenipapo (Genipa americana L.) é uma espécie nativa com importância medicinal, sendo amplamente utilizada no Brasil. Em função da necessidade de…”
Get full text

Associação entre a morfologia de trincas de pisos cerâmicos e seu comportamento mecânico em fratura by E. S. Fonseca, F. G. Tavares, T. N. R. Sousa, W. A. Morais

“…ResumoEste trabalho analisou os dados obtidos a partir de ensaios a flexão em um lote de 40 corpos de provas de placas cerâmicos, preparados da mesma forma de…”
Get full text

Preparation and characterization of chitosan-based dispersions by da Trindade Neto, Cypriano G, Fernandes, Ana LP, Santos, Ana IB, Morais, Waldenice A, Navarro, Marcos VM, Dantas, Tereza NC, Pereira, Márcia R, Fonseca, José LC

“…Complexation of chitosan in aqueous solutions by low molecular weight electrolytes is one of the simplest methods for the preparation of aqueous chitosan…”
Get full text

Associação entre a morfologia de trincas de pisos cerâmicos e seu comportamento mecânico em fratura by Fonseca, E. S., Tavares, F. G., Sousa, T. N. R., Morais, W. A.

“…ResumoEste trabalho analisou os dados obtidos a partir de ensaios a flexão em um lote de 40 corpos de provas de placas cerâmicos, preparados da mesma forma de…”
Get full text