Search Results - "Bragança, G. P."

Enzyme‐mediated metabolism in nutritive tissues of galls induced by Ditylenchus gallaeformans (Nematoda: Anguinidae) by Ferreira, B. G., Freitas, M. S. C., Bragança, G. P., Moreira, A. S. F. P., Carneiro, R. G. S., Isaias, R. M. S., Hause, B.

“…The galls induced by Ditylenchus gallaeformans (Nematoda) on leaves of Miconia albicans have unique features when compared to other galls. The nematode…”
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Detection of cytokinins and auxin in plant tissues using histochemistry and immunocytochemistry by Bedetti, C S, Jorge, N C, Trigueiro, Fcg, Bragança, G P, Modolo, L V, Isaias, Rms

“…We report a new method for histochemical localization of cytokinins (CKs) in plant tissues based on bromophenol blue/silver nitrate staining. The method was…”
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Immunocytochemical evaluation of aquaporins and cell wall components and their influence on foliar water uptake in Andean Melastomataceae by Boanares, D., Posada‐Herrera, J. M., Bragança, G. P. P., Arriola, I. A., Caldeira, C. F., Costa, L. E. N., Gastauer, M., França, M. G. C., Isaias, R. M. d. S.

“…Andean ecosystems are characterized by high humidity, mainly from rain and fog events. Because of differences in altitude two Andean ecosystems – sub‐Andean…”
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Hemicelluloses and associated compounds determine gall functional traits by Bragança, G. P. P., Alencar, C. F., Freitas, M. S. C., Isaias, R. M. S., Scopece, G.

“…The intriguing questions concerning gall development refer to the processes of the remodelling of the host plant organ. Such processes involve the…”
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Method for determining the photocatalytic potential of portland cement mortar containing TiO2 for decomposing the pollutant nitrogen monoxide by Marcelle M. Bonato, Mariana O. G. P. Bragança, Kleber F. Portella, Mateus E. Vieira, Eliseu Esmanhoto, Dailton P. Cerqueira, Jeannette C. M. dos Santos

“…Photocatalytic materials can minimize atmospheric pollution by decomposing certain organic and inorganic pollutants using sunlight as an energy source. In this…”
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Catalytic performance of KL zeolite-supported iron and cobalt catalysts for the Fischer–Tropsch synthesis by da Silva, J. F., Bragança, L. F. F. P. G., da Silva, M. I. Pais

“…In this work, Fe and Co were introduced into a KL zeolite support by incipient wetness impregnation to obtain catalysts for the Fischer–Tropsch synthesis…”
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Bimetallic Co-Fe nanocrystals deposited on SBA-15 and HMS mesoporous silicas as catalysts for Fischer–Tropsch synthesis by Bragança, L.F.F.P.G., Ojeda, M., Fierro, J.L.G., da Silva, M.I. Pais

“…[Display omitted] ► Bimetallic catalysts Co-Fe/HMS and Co-Fe/SBA-15 were used for Fischer–Tropsch synthesis. ► They promoted a high alcohols formation, being…”
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Synthesis of cobalt–iron bimetallic nanocrystals supported on mesoporous silica using different templates by Bragança, L.F.F.P.G., Avilez, Roberto R., Silva, Maria Isabel Pais da

“…CoFe bimetallic samples containing 25 wt% total of metal content were prepared by incipient wetness impregnation of cobalt nitrate and iron nitrate salts over…”
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Internal attack by sulphates in cement pastes and mortars dosed with different levels of pyrite by Capraro, Ana Paula Brandão, Braga, Vinícius, de Medeiros, Marcelo Henrique Farias, Hoppe Filho, Juarez, Bragança, Mariana O. G. P., Portella, Kleber Franke, de Oliveira, Isabela Cristina

“…This study aims to investigate cementitious compound behaviour at early stages (up to 168 days), primarily when dosed with different levels of pyrite. To…”
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METHOD FOR DETERMINING THE PHOTOCATALYTIC POTENTIAL OF PORTLAND CEMENT MORTAR CONTAINING TiO 2 FOR DECOMPOSING THE POLLUTANT NITROGEN MONOXIDE by Bonato, Marcelle M., Bragança, Mariana O. G. P., Portella, Kleber F., Vieira, Mateus E., Esmanhoto, Eliseu, Cerqueira, Dailton P., Santos, Jeannette C. M. dos

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Effect of coarse aggregate size on corrosion of reinforced concrete exposed to carbonation and chloride ingress by electrochemical measurements by Oliveira, Rafael L.N., Bragança, Mariana O.G.P., Medeiros-Junior, Ronaldo A.

“…•Concrete with 25 mm coarse aggregate had worse durability.•Chlorides penetrations above 20 mm showed a reduction in Rp.•EIS results showed a sloping linear…”
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Physicochemical evaluation of oxidation of diabase aggregates with sulfide minerals: influence of particle size, pH of the medium and pyrite concentration by Goto, Hudson, da Silva Braga, Vinícius, Capraro, Ana Paula Brandão, de Medeiros, Marcelo Henrique Farias, Bragança, Mariana O. G. P., Portella, Kleber Franke, de Oliveira, Isabela Cristina

“…Large constructions, such as concrete dams, commonly use aggregates extracted from rock masses near the implantation sites, which may contain sulfide minerals…”
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Monitoring by electrochemical impedance spectroscopy of mortars subjected to ingress and extraction of chloride ions by Melara, Everton K., Mendes, Adriane Z., Andreczevecz, Natália C., Bragança, Mariana O.G.P., Carrera, Gilberto T., Medeiros-Junior, Ronaldo A.

“…•Reinforced mortar was monitored during the ingress and extraction of chloride.•EIS identified the moment of arrival of the chloride ions in the reinforcement…”
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Performance of Portland cement concretes with 1% nano-Fe3O4 addition: Electrochemical stability under chloride and sulfate environments by Bragança, Mariana O.G.P., Portella, Kleber F., Bonato, Marcelle M., Alberti, Emerson, B. Marino, Cláudia E.

“…•Nano-Fe3O4 (1%) was used as a partial replacement of cement in concrete.•Concretes were evaluated through impedance spectroscopy and cyclic…”
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Electrochemical impedance spectroscopy and ultrasound for monitoring expansive reactions and their interactions on cement composites by Bragança, Mariana O.G.P., Hasparyk, Nicole P., Bronholo, Jeferson L., Silva, Anelize Seniski, Portella, Kleber F., Kuperman, Selmo C.

“…•Incipient formation of ASR and DEF expansive products was studied.•EIS was applied to monitor ASR, DEF and couple attack over time.•EIS was supplemented by…”
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Def-related expansion in concrete samples and blocks with nano-sio2 by Bragança, Mariana O.G.P., Hasparyk, Nicole P., Portella, Kleber F., Gomes Dias, Bruna, Farias, Luciana A., Bronholo, Jeferson L., Kuperman, Selmo C.

“…[Display omitted] •The incorporation of nano-SiO2 was evaluated in concrete subjected to high temperature.•Expansions, properties and microstructure were…”
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Use of Raman spectroscopy to characterize the effect of nanomagnetite as an addition to Portland cement paste on mitigating internal sulfate attack by Oliveira, Tassiane A., Pinkoski, Igor M., Bragança, Mariana O.G.P., Assmann, André, Oliveira, Isabela C., Pereira, Eduardo

“…•Cement paste mixtures containing pyrite and nanomagnetite were tested.•Pastes were analysed by FEG SEM/EDS, XRD and Raman spectroscopy.•Nanomagnetite (1%)…”
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Analysis of anchor rod failure in a guyed transmission tower: Influence of microstructures and corrosion mechanisms by Matos, T.S., Portella, K.F., Henke, S.L., Bragança, M.O.G.P., Galvão, M.P., Dias, B.G., Lagoeiro, L., Almeida, L.M.

“…[Display omitted] •Analysis of premature anchor rod failure in guyed transmission towers.•Deformations in steel microstructure were identified by EBSD…”
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Banana leaves ashes as pozzolan for concrete and mortar of Portland cement by Kanning, Rodrigo C., Portella, Kleber F., Bragança, Mariana O.G.P., Bonato, Marcelle M., dos Santos, Jeannette C.M.

“…•Banana leaf ash was assessed as pozzolanic materials in concrete and mortar products.•Banana leaf ash demonstrated pozzolanic activity index with a strength…”
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Argamassas fotocatalíticas e concretos com adição de fibras de coco e sisal para a redução de impactos ambientais de gases poluentes by M. M. Bonato, M. D'O. G. P. Bragança, K. F. Portella, M. E. Vieira, J. L. Bronholo, J. C. M. dos Santos, D. P. Cerqueira

“…A construção civil movimenta, anualmente, toneladas de cimento para as suas mais diversas aplicações, mas, a sua fabricação gera teores elevados de poluentes…”
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