Search Results - "J. A. Varela"

An automated method to find reaction mechanisms and solve the kinetics in organometallic catalysis by Varela, J A, Vázquez, S A, Martínez-Núñez, E

“…A novel computational method is proposed in this work for use in discovering reaction mechanisms and solving the kinetics of transition metal-catalyzed…”
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Structure-specific amyloid precipitation in biofluids by Rodrigues, M., Bhattacharjee, P., Brinkmalm, A., Do, D. T., Pearson, C. M., De, S., Ponjavic, A., Varela, J. A., Kulenkampff, K., Baudrexel, I., Emin, D., Ruggeri, F. S., Lee, J. E., Carr, A. R., Knowles, T. P. J., Zetterberg, H., Snaddon, T. N., Gandhi, S., Lee, S. F., Klenerman, D.

“…The composition of soluble toxic protein aggregates formed in vivo is currently unknown in neurodegenerative diseases, due to their ultra-low concentration in…”
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Synthesis and characterization of CuO flower-nanostructure processing by a domestic hydrothermal microwave by VOLANTI, D. P, KEYSON, D, CAVALCANTE, L. S, SIMOES, A. Z, JOYA, M. R, LONGO, E, VARELA, J. A, PIZANI, P. S, SOUZA, A. G

“…The synthesis and characterization of CuO flower-nanostructure processed in domestic hydrothermal microwave oven was presented. Phase analysis was carried out…”
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Synthesis, growth process and photoluminescence properties of SrWO4 powders by SCZANCOSKI, J. C, CAVALCANTE, L. S, JOYA, M. R, ESPINOSA, J. W. M, PIZANI, P. S, VARELA, J. A, LONGO, E

“…SrWO(4) powders were synthesized by the co-precipitation method and processed in a microwave-hydrothermal (MH) at 140 degrees C for different times. The…”
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Dielectric and ferroelectric characteristics of barium zirconate titanate ceramics prepared from mixed oxide method by Moura, F., Simões, A.Z., Stojanovic, B.D., Zaghete, M.A., Longo, E., Varela, J.A.

“…Barium zirconium titanate (BZT) ceramics were prepared by mixed oxide method. X-ray diffraction showed the presence of a single phase while Raman scattering…”
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Synthesis, Characterization, Anisotropic Growth and Photoluminescence of BaWO4 by Cavalcante, L. S, Sczancoski, J. C, Lima, L. F, Espinosa, J. W. M, Pizani, P. S, Varela, J. A, Longo, E

“…This paper reports on the synthesis of barium tungstate (BaWO4) powders obtained by the coprecipitation method and processed in a domestic…”
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Synaptic Depression and Cortical Gain Control by Abbott, L. F., Varela, J. A., Sen, Kamal, Nelson, S. B.

“…Cortical neurons receive synaptic inputs from thousands of afferents that fire action potentials at rates ranging from less than 1 hertz to more than 200…”
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Effect of Different Solvent Ratios (Water/Ethylene Glycol) on the Growth Process of CaMoO4 Crystals and Their Optical Properties by Marques, V. S, Cavalcante, L. S, Sczancoski, J. C, Alcântara, A. F. P, Orlandi, M. O, Moraes, E, Longo, E, Varela, J. A, Siu Li, M, Santos, M. R. M. C

“…In this paper, calcium molybdate (CaMoO4) crystals (meso- and nanoscale) were synthesized by the coprecipitation method using different solvent volume ratios…”
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NiTiO3 powders obtained by polymeric precursor method : Synthesis and characterization by LOPES, K. P, CAVALCANTE, L. S, SIMOES, A. Z, VARELA, J. A, LONGO, E, LEITE, E. R

“…Nickel titanate (NiTiO3) powders were synthesized by the polymeric precursor method after thermal treatment at different temperatures for 2 h in air…”
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Photoluminescent behavior of BaWO4 powders processed in microwave-hydrothermal by CAVALCANTE, L. S, SCZANCOSKI, J. C, ESPINOSA, J. W. M, VARELA, J. A, PIZANI, P. S, LONGO, E

“…Photoluminescence (PL) at room temperature was observed in BaWO4 powders processed in microwave-hydrothermal at 140 deg C for different times. The phases were…”
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Strong violet-blue light photoluminescence emission at room temperature in SrZrO3 : Joint experimental and theoretical study by LONGO, V. M, CAVALCANTE, L. S, VARELA, J. A, LONGO, Elson, ERLO, R, MASTELARO, V. R, DE FIGUEIREDO, A. T, SAMBRANO, J. R, DE LAZARO, S, FREITAS, A. Z, GOMES, L, VIEIRA, N. D

“…Ultrafine ordered and disordered SrZrO3 powders were prepared by the polymeric precursor method. The structural evolution from structural disorder to order was…”
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Photoluminescence of Barium Titanate and Barium Zirconate in Multilayer Disordered Thin Films at Room temperature by Moreira, M. L, Gurgel, M. F. C, Mambrini, G. P, Leite, E. R, Pizani, P. S, Varela, J. A, Longo, E

“…The emission of wide band photoluminescence showed a synergic effect on barium zirconate and barium titanate thin films in alternate multilayer system at room…”
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Suppression of crosstalk in multielectrode arrays with local shielding by Naughton, J R, Varela, J A, Connolly, T J, Shepard, S, Dodge, T E, Kempa, K, Burns, M J, Christianson, J P, Naughton, M J

“…Electrical crosstalk can constrain the performance of multielectrode arrays in electro- and neurophysiology, in terms of both stimulation and recording. This…”
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Microstructure, dielectric properties and optical band gap control on the photoluminescence behavior of Ba[Zr0.25Ti0.75]O3 thin films by Cavalcante, L. S., Sczancoski, J. C., De Vicente, F. S., Frabbro, M. T., Li, M. Siu, Varela, J. A., Longo, E.

“…Ba[Zr 0.25 Ti 0.75 ]O 3 (BZT) thin films were synthesized by the complex polymerization method and heat treated at 400 °C for different times and at 700 °C for…”
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Photoluminescence in quantum-confined SnO2 nanocrystals: Evidence of free exciton decay by Lee, E. J. H., Ribeiro, C., Giraldi, T. R., Longo, E., Leite, E. R., Varela, J. A.

“…Nanocrystalline SnO2 quantum dots were synthesized at room temperature by hydrolysis reaction of SnCl2. The addition of tetrabutyl ammonium hydroxide and the…”
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Intense blue and green photoluminescence emissions at room temperature in barium zirconate powders by Cavalcante, L.S., Sczancoski, J.C., Espinosa, J.W.M., Mastelaro, V.R., Michalowicz, A., Pizani, P.S., De Vicente, F.S., Li, M.S., Varela, J.A., Longo, E.

“…Intense blue and green photoluminescence (PL) emissions were observed at room temperature in barium zirconate (BaZrO 3) powders prepared by chemical method…”
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Structural evolution of Eu-doped hydroxyapatite nanorods monitored by photoluminescence emission by André, R.S., Paris, E.C., Gurgel, M.F.C., Rosa, I.L.V., Paiva-Santos, C.O., Li, M.S., Varela, J.A., Longo, E.

“…► Nanorod Eu-doped HA was obtained by using HTMW process without a secondary phase. ► Eu3+ emission can be effective to monitoring the evolution of structural…”
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Toward an Understanding of Intermediate- and Short-Range Defects in ZnO Single Crystals. A Combined Experimental and Theoretical Study by Lima, R. C, Macario, L. R, Espinosa, J. W. M, Longo, V. M, Erlo, R, Marana, N. L, Sambrano, J. R, dos Santos, M. L, Moura, A. P, Pizani, P. S, Andrés, J, Longo, E, Varela, J. A

“…A joint use of experimental and theoretical techniques allows us to understand the key role of intermediate- and short-range defects in the structural and…”
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Microwave-hydrothermal synthesis of barium strontium titanate nanoparticles by Simões, A.Z., Moura, F., Onofre, T.B., Ramirez, M.A., Varela, J.A., Longo, E.

“…▶ Barium strontium titanate nanoparticles were obtained by the Hydrothemal microwave technique (HTMW) ▶ This is a genuine technique to obtain nanoparticles at…”
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Combined experimental and theoretical investigations of the photoluminescent behavior of Ba(Ti,Zr)O3 thin films by CAVALCANTE, L. S, GURGEL, M. F. C, PARIS, E. C, SIMOES, A. Z, JOYA, M. R, VARELA, J. A, PIZANI, P. S, LONGO, E

“…The correlation between experimental data and theoretical calculations have been investigated to explain the photoluminescence at room temperature of…”
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