Search Results - "Paiva, K."

Thermal and hydrodynamic analysis of a compact heat exchanger produced by additive manufacturing by da Silva, R.P.P., Mortean, M.V.V., de Paiva, K.V., Beckedorff, L.E., Oliveira, J.L.G., Brandão, F.G., Monteiro, A.S., Carvalho, C.S., Oliveira, H.R., Borges, D.G., Chastinet, V.L.

“…•Compact heat exchanger manufactured with Selective Laser Melting process.•Thermal and Hydrodynamic theoretical models validated with experimental…”
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Combined effects of inlet conditions and assembly accuracy on Nusselt and friction factors of plate heat exchangers by Santos, F.J.dos, Martins, G.S.M., Strobel, M., Beckedorff, L., Paiva, K.V.de, G.Oliveira, J.L.

“…From 1920's on plate heat exchangers (PHE) became a successful industrial solution regarding energy conversion owing to their compactness and efficiency…”
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Flow maldistribution and heat transfer characteristics in plate and shell heat exchangers by Beckedorff, L., da Silva, R.P.P., Martins, G.S.M., de Paiva, K.V., Oliveira, J.L.G., Oliveira, A.A.M.

“…•The pressure drop, flow maldistribution, and heat transfer rate are measured in a plate and shell heat exchanger.•Friction factor and Nusselt number…”
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Thermal and hydrodynamic analysis of a cross-flow compact heat exchanger by Mortean, M.V.V., Cisterna, L.H.R., Paiva, K.V., Mantelli, M.B.H.

“…•A complete analysis of the heat transfer and pressure drop is performed.•A model to predict the pressure drop in the heat exchanger is presented.•An…”
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Optimization method for compact heat exchanger cores with circular channels by Zilio, G., Pontin, T. T., Oliveira, J. L. G., Paiva, K. V., Mortean, M. V. V.

“…Geometry optimization aims to maximize heat transfer rate and minimize pressure drop attending to structural and fabrication constraints. The present work…”
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Structural analysis of gasketed plate heat exchangers by Martins, G.S.M., Santiago, R.S., Beckedorff, L.E., Possamai, T.S., Oba, R., Oliveira, J.L.G., de Oliveira, A.A.M., Paiva, K.V.

“…Gasketed plate heat exchangers (GPHEs) are widely used in the petrochemical, food, and textile industries. Due to pressure and temperature gradients among…”
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Fatigue performance evaluation of plate and shell heat exchangers by Martins, G.S.M., da Silva, R.P.P.D., Beckedorff, L., Monteiro, A.S., de Paiva, K.V., Oliveira, J.L.G.

“…Fatigue life of plate and shell heat exchangers has been determined by experiments. Tests occurred with the aid of a pneumatic-hydraulic setup in which plate…”
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Application of radiological assessment as water quality criterion for effluent release in a Brazilian uranium mine by Pereira, Wagner S., Kelecom, Alphonse, Lopes, José M., Charles-Pierre, Maxime, Campelo, Emanuele L. C., Carmo, Alessander S., Filho, Lucas G. Padilha, Paiva, Alexandre K. S., Silva, Ademir X.

“…Uranium mining causes several radiological impacts on the surrounding environment, notably in the water bodies, mainly due to the release of long half-life…”
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Intake of natural radionuclides present in organic and conventional foods: radiological aspects by Paiva, Alexandre K. S., Pereira, Wagner S., Lopes, José M., Silva, Leandro B., Carmo, Alessander S., Tarre, Ricardo M., Charles-Pierre, Maxime, Thalhofer, Jardel L., Silva, Ademir X.

“…Conventionally and organically grown vegetables were analyzed with gamma spectrometry, and its activity concentration were obtained for 40 K, 228 Ra, 226 Ra…”
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The cannabinoid agonist WIN-2 affects acquisition but not consolidation of a spatial information in training and retraining processes: Relation with transcriptional regulation of the endocannabinoid system? by Alarcon, T.A., Areal, L.B., Herlinger, A.L., Paiva, K.K., Cicilini, M.A., Martins-Silva, C., Pires, R.G.W

“…The endocannabinoid system is capable of modulating multiple physiological brain functions including learning and memory. Moreover, there is evidence that the…”
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Synchrotron microtomography applied to the volumetric analysis of internal structures of Thoropa miliaris tadpoles by Fidalgo, G., Paiva, K., Mendes, G., Barcellos, R., Colaço, G., Sena, G., Pickler, A., Mota, C. L., Tromba, G., Nogueira, L. P., Braz, D., Silva, H. R., Colaço, M. V., Barroso, R. C.

“…Amphibians are models for studying applied ecological issues such as habitat loss, pollution, disease, and global climate change due to their sensitivity and…”
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Characterization of compact heat exchangers manufactured by laser powder bed fusion technology by Zilio, G., Borges, D. G., Mortean, M. V. V., Oliveira, J. L. G., Dutra, G. B., Paiva, K. V.

“…This study presents the material characterization of compact heat exchanger manufactured by laser powder bed fusion. Twelve tensile specimens were…”
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Theoretical thermal study of wire-plate mini heat pipes by Paiva, K.V., Mantelli, M.B.H.

“…In the present study, a theoretical thermal study of a wire-plate mini heat pipe is presented. The wire-plates are considered grooved type heat pipes. Two…”
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Static pressure behavior of gas–liquid flows along a Venturi by Costa, M. G., Leite, J. M., Beckedorff, L., Spengler, A. W., de Paiva, K. V., Oliveira, J. L. G.

“…The applicability of a multiphase flow meter consisting of a modified Venturi and an electrical capacitance tomography (ECT) was investigated with two-phase…”
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Experimental testing of mini heat pipes under microgravity conditions aboard a suborbital rocket by Paiva, K.V., Mantelli, M.B.H., Slongo, L.K.

“…Heat pipe technologies have numerous applications under microgravity conditions in aerospace, from miniature devices in laptops used aboard the International…”
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Passive aircraft cooling systems for variable thermal conditions by Oliveira, J.L.G., Tecchio, C., Paiva, K.V., Mantelli, M.B.H., Gandolfi, R., Ribeiro, L.G.S.

“…A novel design for a heat exchanger system [1], for which a patent application has been filed, was experimentally evaluated in the laboratory under variable…”
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MHTP, a synthetic alkaloid, attenuates combined allergic rhinitis and asthma syndrome through downregulation of the p38/ERK1/2 MAPK signaling pathway in mice by Paiva Ferreira, Laércia K.D., Paiva Ferreira, Larissa A.M., Bezerra Barros, Grasiela C., Mozzini Monteiro, Talissa, de Araújo Silva, Luiz A., Pereira, Ramon de A., Figueiredo, Pedro T.R., Alves, Adriano Francisco, Rodrigues, Luís Cezar, Piuvezam, Marcia Regina

“…•CARAS is an airway syndrome that affects a large part of the world population.•MHTP synthetic alkaloid by oral and intranasal route inhibits eosinophils.•MHTP…”
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Combined allergic rhinitis and asthma syndrome (CARAS) by Paiva Ferreira, Laércia K.D., Paiva Ferreira, Larissa A.M., Monteiro, Talissa M., Bezerra, Grasiela Costa, Bernardo, Larissa Rodrigues, Piuvezam, Marcia Regina

“…Combined allergic rhinitis and asthma syndrome (CARAS) is a concept of “one airway – one disease” or “unified airway disease “. The upper and lower airway…”
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Topical estradiol increases epidermal thickness and dermal collagen of foreskin prior to hypospadia surgery – Randomized double blinded controlled trial by Casali, T.G., Christina de Castro Paiva, K., Rodrigues, M.N., Santana Silva, C.E., Avarese de Figueiredo, A., de Bessa, J., Bastos, A.N., Marques Nogueira Castañon, M.C., Bastos Netto, J.M.

“…The use of preoperative topical testosterone stimulation prior to hypospadias correction aims to increase penile size and achieve better surgical results…”
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4-Carvomenthenol ameliorates the murine combined allergic rhinitis and asthma syndrome by inhibiting IL-13 and mucus production via p38MAPK/NF-κB signaling pathway axis by Bezerra Barros, Grasiela Costa, Paiva Ferreira, Laércia K.D., Ferreira, Larissa A.M.P., Mozzini Monteiro, Talissa, Alves, Adriano Francisco, Pereira, Ramon de Alencar, Piuvezam, Marcia Regina

“…[Display omitted] •CARAS is a serious health problem all over the world generating negative economic and social impacts.•4-carvomenthenol (Carvo), an essential…”
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