Search Results - "Magalhães, W.F."

Positron annihilation studies in binary solid solutions and mechanical mixtures of lanthanide dipivaloylmethanate complexes by Fulgêncio, F., Oliveira, F.C., Windmöller, D., Araujo, M.H., Marques-Netto, A., Machado, J.C., Magalhães, W.F.

“…[Display omitted] •Positronium formation in several Ln3+ complexes, except in Eu3+ complexes.•Positron annihilation spectroscopies used as a characterization…”
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Solid Eu(III) complexes studied by positron annihilation, optical and Mössbauer spectroscopies: Insights on the positronium formation mechanism by Fulgêncio, F., de Oliveira, F.C., Ivashita, F.F., Paesano, A., Windmöller, D., Marques-Netto, A., Magalhães, W.F., Machado, J.C.

“…[Display omitted] ► Absence of positronium formation in europium complexes. ► Mössbauer, luminecence and positron spectroscopies measured in Eu(dpm)3. ►…”
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Positron annihilation studies in solid substituted aromatic compounds by Oliveira, F.C., Oliveira, A.M., Donnici, C.L., Machado, J.C., Magalhães, W.F., Windmöller, D., Fulgêncio, F.H., Souza, L.R.

“…[Display omitted] ► Aromatics with electron donating groups increase positronium formation probability. ► Ratio of positronium formation probability are used…”
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Positronium formation studies in solid molecular complexes: Triphenylphosphine oxide–triphenylmethanol by Oliveira, F.C., Denadai, A.M.L., Fulgêncio, F.H., Magalhães, W.F., Alcântara, A.F.C., Windmöller, D., Machado, J.C.

“…► Positronium formation was detected in [TPPO(1−X)⋅TPMX] system. ► TPPO and TPM show a high positronium formation probability. ► The [TPPO0.5⋅TPM0.5] complex…”
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Positronium formation studies in crystalline molecular complexes: Triphenylphosphine oxide – Acetanilide by Oliveira, F.C., Denadai, A.M.L., Guerra, L.D.L, Fulgêncio, F.H., Windmöller, D., Santos, G.C., Fernandes, N.G., Yoshida, M.I., Donnici, C.L., Magalhães, W.F., Machado, J.C.

“…[Display omitted] ► [TPPO(1−X)·ACNX] was studied by thermodynamic, spectroscopic and structural techniques. ► By PALS, TPPO and ACN have the same positronium…”
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Participation of electronic excited states in the positronium formation mechanism in the Gd(III) pentakis (picrate) complexes with imidazolium countercations by Fulgêncio, F., Borges, A.S., Araújo, M.H., Brito, H.F., Oliveira, F.C., Ribeiro, T., Windmöller, D., Magalhães, W.F.

“…In this work, positron annihilation lifetime (PALS) and optical spectroscopies measurements were performed on [Gd(pic)2(H2O)6](pic)·6H2O and on complexes of…”
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Supramolecular interactions between triphenylphosphine oxide and benzamide evaluated by positron annihilation lifetime spectroscopy by Oliveira, F.C., Denadai, A.M.L., Fulgêncio, F., Oliveira, A.M., Andrade, A.C.A., Melo, A.C.A., Yoshida, M.I., Windmöller, D., Magalhães, W.F.

“…In the present work, intermolecular interactions between triphenylphosphine oxide (TPPO) and benzamide (BZM) has been studied in solid state by Positron…”
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Intestinal Ischemia-Reperfusion Is Attenuated by Treatment With Atenolol in Rabbits by Taha, M.O, Miranda-Ferreira, R, Simões, R.S, Oliveira, I, Modaelli-Filho, M.L, Magalhães-Junior, W.F, Souza, E.S, Lemos, J.A.S, Simões, M.C, Caricati-Neto, A

“…Abstract To study whether treatment with the beta-blocker atenolol (AT) attenuates intestinal dysfunction caused by ischemia (I) and reperfusion (R), rabbits…”
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Positronium formation in solid transition metal losartanates complexes by de Oliveira, F.C., Denadai, A.M.L., Fulgêncio, F., da Silva, J.G., Windmöller, D., Marques-Netto, A., Machado, J.C., Magalhães, W.F.

“…•Ps formation in losartan complexes were evaluated by spur and cibotatic.•I3 parameter was correlated with molar conductivity and periodic properties E0 and…”
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Electronic structure of solid molecular complexes evaluated by positronium formation studies at low temperature by Oliveira, F.C., Denadai, A.M.L., Fulgêncio, F.H., Windmöller, D., Yoshida, M.I., Magalhães, W.F.

“…[Display omitted] •[TPPO1−x⋅TPMx] and [TPPO1−x⋅ACNx] systems were studied by PALS at low temperature.•At 80K, τ3 and I3 remain constant throughout the…”
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Modelling uncertainty estimation for the determination of aflatoxin M 1 in milk by visual and densitometric thin-layer chromatography with immunoaffinity column clean-up by Carvalho, K.L., Gonçalves, G.A.A., Lopes, A.L., Santos, E.A., Vargas, E.A., Magalhães, W.F.

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Positron annihilation in triphenylphosphine oxide complexes: Positronium inhibition mechanism involving excitation of charge transfer states by Faustino, W.M., de Sá, G.F., Malta, O.L., Magalhães, W.F., Machado, J.C.

“…Positronium formation in triphenylphosphine oxide and its lanthanide and hydrogen peroxide complexes was characterized. The low positronium probability…”
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Modelling uncertainty estimation for the determination of aflatoxin M1 in milk by visual and densitometric thin-layer chromatography with immunoaffinity column clean-up by Carvalho, K.L, Gonçalves, G.A.A, Lopes, A.L, Santos, E.A, Vargas, E.A, Magalhães, W.E

“…The uncertainty of aflatoxin M 1 concentration in milk, determined by thin-layer chromatography (TLC) with visual and densitometric quantification of the…”
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Probability density function from experimental positron annihilation lifetime spectra by Viterbo, V.C., Sebastião, R.C.O., Monteiro, R.P.G., Magalhães, W.F., Braga, J.P.

“…Inversion of experimental positron annihilation lifetime spectra was carried out to obtain the probability density function. Apparatus resolution together with…”
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Inhibition of positronium formation and its quenching reactions in binary solid solutions and mixtures of metal tris-2,2,6,6-tetramethyl-3,5-heptanedionate (dpm) complexes by Porto, A.O., Magalhães, W.F., Machado, J.C.

“…The inhibition of positronium formation and its quenching reactions have been studied in binary solid solutions formed by Al(dpm) 3 as a matrix, and Co(dpm) 3,…”
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