Produção Nacional
Revisado por pares
Juliana Pfrimer Falcão, Marcelo Brocchi, José Luiz Proença‐Módena, Gustavo Olszanski Acrani, Ednéia F. Corrêa, Deise Pasetto Falcão,
To determine the species, bio-sero-phagetypes, antimicrobial drug resistance and also the pathogenic potential of 144 strains of Yersinia spp. isolated from water sources and sewage in Brazil.The 144 Yersinia strains were characterized biochemically, serologically and had their antibiotic resistance and phenotypic virulence markers determined by microbiological and serological standard techniques. The Y. enterocolitica strains related to human diseases were also tested for the presence of virulence ...
Tópico(s): Zoonotic diseases and public health
2004 - Oxford University Press | Journal of Applied Microbiology
Produção Nacional
Revisado por pares
Luiz Fernando R. Falcão, Marcelo Vaz Perez, Isac de Castro, A. M. Yamashita, Maria Ângela Tardelli, José Luis Gomes do Amaral,
BackgroundThe use of ultrasound (US) in regional anaesthesia enables a reduction in the local anaesthetic volume. The present study aimed to determine the minimum effective volume (MEV90) of 0.5% bupivacaine with epinephrine for interscalene brachial plexus block (ISBPB).MethodsThe volume of the anaesthetic was determined using a step-up/step-down method and was based on the outcome of the preceding block. A positive or negative block resulted in a 1 ml reduction or increase in volume, respectively. ...
Tópico(s): Dental Anxiety and Anesthesia Techniques
2012 - Elsevier BV | British Journal of Anaesthesia
Produção Nacional
Revisado por pares
José Maria Barbosa‐Filho, Tereza Helena Cavalcanti de Vasconcelos, A. A. J. Alencar, Leônia Maria Batista, Rinalda Araújo Guerra de Oliveira, Diego Nunes Guedes, Heloina de Sousa Falcão, Marcelo D. Moura, Margareth de Fátima Formiga Melo Diniz, João Modesto-Filho,
There has been marked interest in recent years in the use of plants for the treatment of diabetes. Plants have been found in many countries which have been indicated as having hypoglycemic activity. The present work is an up-to-date review with 178 references of crude plant extracts and chemically defined molecules with hypoglycemic activity from South, Central and North America. The review refers to 224 plants with their families, parts used and type of extract, organism tested and activity. It ...
Tópico(s): Pharmacology and Obesity Treatment
2005 - Springer Science+Business Media | Revista Brasileira de Farmacognosia
Produção Nacional
Revisado por pares
Eurípedes Falcão Vieira, Marcelo Milano Falcão Vieira,
Tópico(s): Business and Management Studies
2004 - Associação Nacional de Pós-Graduação e Pesquisa em Administração (ANPAD) | Revista de Administração Contemporânea
Produção Nacional
Revisado por pares
Christianne Falcão, Marcelo M. Soares,
Users of consumer products have benefited from companies' growing interest in seeking technological innovation to improve their competitiveness and business performance. In this context, interface design represents an essential task in the product process development to directly influence customer satisfaction and, consequently, the success of the product in the market. Usability is about the product ease of use so it is necessary first and foremost to know who are the user / consumer and what their ...
Tópico(s): Augmented Reality Applications
2013 - Springer Science+Business Media | Lecture notes in computer science
Produção Nacional
Revisado por pares
Luciana Santos de Oliveira, Juan F.G. Alba, Valdinete L. Silva, Rogério T. Ribeiro, Eduardo Henrique Lago Falcão, Marcelo Navarro,
The use of commercial graphite powders (different sources and particle sizes), as electrode materials, was evaluated in an electrochemical cavity cell. The graphite powders were characterized by electron microscopy, XRD, vibrational spectroscopy, porosimetry, contact angle, Boehm titration and cyclic voltammetry. Despite similarities, the graphite powders differed significantly in terms of surface functional groups (SFGs), hydrophobicity and particle size. The surface chemistry of both graphites was ...
Tópico(s): Advancements in Battery Materials
2018 - Elsevier BV | Journal of Electroanalytical Chemistry
Produção Nacional
Revisado por pares
Diogo Turiani Hourneaux de Moura, Eduardo Guimarães Hourneaux de Moura, Manoel Galvão Neto, Pichamol Jirapinyo, Newton Teixeira, Ivan Roberto Bonotto Orso, Luiz Gustavo de Quadros, Artagnan Menezes Barbosa de Amorim, Filipe Medeiros, Durval Rosa Neto, João de Siqueira Neto, Alvaro Albano, Luiz Henrique de Sousa, Delano B. Almeida, Igor Antunes Marchetti, Flávio Heuta Ivano, João Henrique Felício de Lima, Marcelo Falcão, Christopher C. Thompson,
The management of laparoscopic sleeve gastrectomy leaks remains a challenge. This can be treated with placement of self-expandable metal stents, which are most effective in the acute and early settings. However, migration is a frequent adverse event (AE). Novel, fully covered stents with a larger proximal flare to limit migration designed specifically to treat postsleeve leaks were recently introduced.The aim of this study was to evaluate the safety and efficacy of a novel stent specifically designed ...
Tópico(s): Gastric Cancer Management and Outcomes
2019 - Elsevier BV | Surgery for Obesity and Related Diseases
Produção Nacional
Revisado por pares
Nelson Delfino de Campos Neto, Flavio Soares Pereira, Selma Gutierrez Antônio, Yaofeng Guo, Amy J. Clarke, M.J. Kaufman, Marcelo Falção de Oliveira,
A design of experiments (DoE) approach was employed to systematically characterize the effects of both oxygen concentration and cooling rate on the amorphous and crystalline phase fractions in the Zr48Cu46.5Al4Nb1.5 bulk metallic glass composite (BMGC) alloy. Specifically, four distinct oxygen concentrations and five distinct cooling rates were used. Phase quantification was achieved using Rietveld refinement of synchrotron X-ray diffraction (XRD) data. Electron probe microanalysis (EPMA) using wavelength ...
Tópico(s): Metallic Glasses and Amorphous Alloys
2019 - Elsevier BV | Materials Characterization
Produção Nacional
Revisado por pares
Angelo F. Andreoli, J. Orava, Peter K. Liaw, Hans Peter Weber, Marcelo Falção de Oliveira, Kornelius Nielsch, I. Kaban,
An empirical method is developed, based on the calculated theoretical elastic-strain energy, to predict the phase formation and its stability for complex concentrated alloys. The method prediction quality is compared with the traditional empirical rules based on the atomic-size mismatch, enthalpy of mixing, and valence-electron concentration for a database of 235 alloys. The "elastic-strain energy vs. valence-electron concentration" criterion shows an improved ability to distinguish between single- ...
Tópico(s): Intermetallics and Advanced Alloy Properties
2019 - Elsevier BV | Materialia
Produção Nacional
Revisado por pares
Ricardo J. Fittipaldi-Fernandez, Idiberto José Zotarelli Filho, Cristina F. Diestel, Márcia Regina Simas Torres Klein, Marcelo Falcão de Santana, João Henrique Felício de Lima, Fernando Santos Silva Bastos, Newton Teixeira dos Santos,
Tópico(s): Gastric Cancer Management and Outcomes
2020 - Springer Science+Business Media | Obesity Surgery
M. Kirmani, Marcelo Falcão de Santana, Nino Sorgente, Peter Wiedemann, Stephen J. Ryan,
We used an experimental model of proliferative vitreoretinopathy (PVR) and cell-induced traction retinal detachment to study the therapeutic value of six cytotoxic drugs (actinomycin C, colchicine, cytosine arabinoside hydrochloride, 5-fluorodeoxyuridine, vinblastine sulfate, and daunomycin). Pigmented rabbits were injected with 2.5 ± 105 cultured homologous dermal fibroblasts. At the same time, cytotoxic drugs were injected into the vitreous in an attempt to inhibit cellular proliferation. The sensitivity ...
Tópico(s): Drug-Induced Ocular Toxicity
1983 - Lippincott Williams & Wilkins | Retina
Peter Wiedemann, M. Kirmani, Marcelo Falcão de Santana, Nino Sorgente, Stephen J. Ryan,
Tópico(s): Retinal Development and Disorders
1983 - Springer Science+Business Media | Graefe s Archive for Clinical and Experimental Ophthalmology
Marcelo Falcão de Santana, Peter Wiedemann, M. Kirmani, Don S. Minckler, Randi Patterson, Nino Sorgente, Stephen J. Ryan,
Tópico(s): Retinal Development and Disorders
1984 - Springer Science+Business Media | Graefe s Archive for Clinical and Experimental Ophthalmology
Produção Nacional
Revisado por pares
Carlos Alberto Caldas de Souza, J.E. May, I.A. Carlos, Marcelo Falção de Oliveira, S.E. Kuri, Cláudio Shyinti Kiminami,
Amorphous FeMBCu (M=Nb, Zr) and FeNbSiBCu alloys with nanometer size crystallites have attracted attention due to their soft magnetic properties. The mechanism through which crystallization affects the corrosion and the comparative effect of corrosion on magnetic properties of FeMBCu (M=Nb, Zr) and FeNbSiBCu alloys has not yet been evaluated. In this paper the effect of partial crystallization on corrosion resistance of amorphous Fe73Nb3Si15.5B7.5 Cu1 and Fe80Zr3.5Nb3.5B12Cu1 alloy ribbons and the ...
Tópico(s): Magnetic properties of thin films
2002 - Elsevier BV | Journal of Non-Crystalline Solids
Produção Nacional
Revisado por pares
Marcelo Falção de Oliveira, Walter José Botta Filho, M.J. Kaufman, Cláudio Shyinti Kiminami,
In the present work the Zr55Al10Ni5Cu30 alloy has been processed by melt spinning and die-casting into a chilled copper mold. The ribbon was fully amorphous (X-ray diffraction and transmission electron microscopy) and cast samples partially crystalline. The amorphous ribbon was crystallized and analyzed by differential scanning calorimetry, X-ray diffractometry and transmission electron microscopy. The smaller supercooled liquid range of the glassy ribbons (60 K) and partial crystallization of a larger ...
Tópico(s): Metallic Glasses and Amorphous Alloys
2002 - Elsevier BV | Journal of Non-Crystalline Solids
Produção Nacional
Revisado por pares
Walter José Botta Filho, Flavio Soares Pereira, Claudemiro Bolfarini, Cláudio Shyinti Kiminami, Marcelo Falção de Oliveira,
The glass-forming ability (GFA) of metallic alloys is associated with a topological instability criterion combined with a new parameter based on the average electronegativity difference of an element and its surrounding neighbours. In this model, we assume that during solidification the glassy phase competes directly with the supersaturated solid solution having the lowest topological instability factor for a given composition. This criterion is combined with the average electronegativity difference ...
Tópico(s): Cultural Heritage Materials Analysis
2008 - Taylor & Francis | Philosophical Magazine Letters
Produção Nacional
Revisado por pares
Marcelo Falção de Oliveira, Flavio Soares Pereira, Claudemiro Bolfarini, Cláudio Shyinti Kiminami, Walter José Botta Filho,
In this paper, we report the remarkable agreement of the glass forming ability of binary alloys with a new criterion that combines the topological instability parameter (λ) and the average electronegativity difference among the elements of an alloy, assuming both exert a synergetic effect. The best glass forming compositions for Zr–Cu and Ti–Ni systems are well predicted by this new approach. Although the new criterion needs further refinement, it is concluded that the proposed approach is a promising ...
Tópico(s): Glass properties and applications
2008 - Elsevier BV | Intermetallics
Produção Nacional
Revisado por pares
Walter José Botta Filho, Carlos Triveño Ríos, R.D. Sá Lisboa, A.R. de Andrade, Marcelo Falção de Oliveira, Claudemiro Bolfarini, Cláudio Shyinti Kiminami,
The different types of thermal crystallisation behaviours observed during continuous heating of Al-based metallic glasses have been successfully associated with the topological instability λ criterion, which is simply calculated from the alloy composition and metallic radii of the alloying elements and aluminium. In the present work, we report on new results evidencing the correlation between the values of λ and the crystallisation behaviours in Al-based alloys of the Al–Ni–Ce system and we compare ...
Tópico(s): Material Dynamics and Properties
2008 - Elsevier BV | Journal of Alloys and Compounds
Produção Nacional
Revisado por pares
Artur Mariano de Sousa Malafaia, Marcos Milan, Marcelo Falção de Oliveira, D. Spinelli,
The main aim of this study was to compare the fatigue resistance of welded joints produced by FSSW process and riveted joints of AA2024 alloy. The specimens welded with the best preliminary parameters determined by previous tensile shear tests were tested in fatigue under load control, R=0.1, at room temperature. Two welding parameter sets were used, and P-N curves (load versus cycles) were plotted, using 2×106 cycles as the fatigue life limit. A similar curve was obtained for riveted specimens. ...
Tópico(s): Metal Forming Simulation Techniques
2010 - Elsevier BV | Procedia Engineering
Produção Nacional
Revisado por pares
Almino Ramos, Manoel Galvão Neto, Manoela Galvão, Andrey Carlo, Edwin Canseco, Marcus Lima, Marcelo Falcão, Abel H. Murakami,
The biliopancreatic diversion with duodenal switch, with Hess and Hess [ [1] Hess D.S. Hess D.W. Biliopancreatic diversion with a duodenal switch. Obes Surg. 1998; 8: 267-282 Crossref PubMed Scopus (662) Google Scholar ], Marceau et al. [ [2] Marceau P. Hould F.S. Simard S. et al. Biliopancreatic diversion with duodenal switch. World J Surg. 1998; 22: 947-954 Crossref PubMed Scopus (538) Google Scholar ], and Baltazar as its pioneers, has been shown to have excellent and, even, the best results in terms of the ...
Tópico(s): Esophageal and GI Pathology
2007 - Elsevier BV | Surgery for Obesity and Related Diseases
Cláudio Shyinti Kiminami, R. D. S aacute Lisboa, Marcelo Falção de Oliveira, Claudemiro Bolfarini, Walter José Botta Filho,
In the present work we propose a new approach for predicting the best glass-former composition(s) in multi-component metallic glasses. By applying the λ criterion, a topological instability criterion proposed to predict the crystallisation behaviour of Al-based systems, we show that it is also successfully possible to reproduce compositional ranges where binary and ternary bulk metallic glasses (BMGs) have recently been obtained. Our results indicate that the good glass-former composition(s) lie( ...
Tópico(s): Glass properties and applications
2007 - | MATERIALS TRANSACTIONS
Produção Nacional
Revisado por pares
Josemberg Marins Campos, Eduardo Franca Pereira, Luis Fernando Evangelista, Luciana T. Siqueira, Manoel Galvão Neto, Victor Ramos Mussa Dib, Marcelo Falcão, Vitor Arantes, Diego Awruch, Walton Albuquerque, João Ettinger, Almino Ramos, Álvaro Antônio Bandeira Ferraz,
Tópico(s): Gastroesophageal reflux and treatments
2011 - Springer Science+Business Media | Obesity Surgery
Produção Nacional
Revisado por pares
A new and simple criterion with which to quantitatively predict the glass forming ability (GFA) of metallic alloys is proposed. It was found that the critical cooling rate for glass formation (RC) correlates well with a proper combination of two factors, the minimum topological instability (λmin) and the Δh parameter, which depends on the average work function difference (Δφ) and the average electron density difference (Δnws1/3) among the constituent elements of the alloy. A correlation coefficient (R2) ...
Tópico(s): Glass properties and applications
2012 - American Institute of Physics | Journal of Applied Physics
Produção Nacional
Revisado por pares
Marcelo Falcão, Josemberg Marins Campos, Manoel Galvão Neto, Almino Ramos, T Secchi, Erivaldo Alves, Eduardo França, Fauze Maluf‐Filho, Álvaro Antônio Bandeira Ferraz,
Tópico(s): Esophageal and GI Pathology
2012 - Springer Science+Business Media | Obesity Surgery
Produção Nacional
Revisado por pares
A.R. Yavari, Marcelo Falção de Oliveira, Cláudio Shyinti Kiminami, Akira Inoue, Walter José Botta Filho,
Using the intrinsic materials properties of bulk metallic glasses (BMGs), namely electrical resistivities two orders of magnitude higher than good conductors and a Newtonian viscous-flow regime of deformability, a new electromechanical process has been developed for shaping, joining and engraving of BMGs. Viscous flow in the supercooled liquid region between the glass transition temperature Tg and the crystallisation temperature Tx of the bulk metallic glass allows rapid electromechanical shaping, ...
Tópico(s): Phase-change materials and chalcogenides
2004 - Elsevier BV | Materials Science and Engineering A
Produção Nacional
Revisado por pares
Carlos Alberto Caldas de Souza, Marcelo Falção de Oliveira, J.E. May, Walter José Botta Filho, Neide Aparecida Mariano, S.E. Kuri, Cláudio Shyinti Kiminami,
Amorphous Fe–M–B (MZr, Nb) based alloys with nanometer-sized crystallites have attracted attention due to their magnetic properties. Although corrosion resistance is a desirable property in such alloys, no study concerning this aspect has been reported. The effect of metalloid content and partial crystallization on corrosion resistance of Fe–M–B (MZr, Nb) amorphous alloys, Fe84Nb7B9, Fe84Zr7B9 and Fe83Zr3.5Nb3.5B9Cu1, was investigated. Corrosion resistance measurements were carried out by mass loss, ...
Tópico(s): Magnetic Properties and Applications
2000 - Elsevier BV | Journal of Non-Crystalline Solids
Produção Nacional
Revisado por pares
Nabil Bassim, Cláudio Shyinti Kiminami, M.J. Kaufman, Marcelo Falção de Oliveira, M.N.R.V. Perdigão, Walter José Botta Filho,
Abstract The crystallization behavior and microstructure development upon annealing amorphous Al84Y9Ni5Co2 melt-spun ribbons have been investigated by a combination of differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and X-ray diffraction (XRD). Crystallization is shown to occur in three stages: (1) primary crystallization of α-Al; (2) formation of an unknown crystalline phase; (3) formation of Al3Y, Al9Co2 and a phase similar to Al16Ni3Y. The morphology, EDS and diffraction ...
Tópico(s): Material Dynamics and Properties
2001 - Elsevier BV | Materials Science and Engineering A
Produção Nacional
Revisado por pares
Carlos Alberto Caldas de Souza, J.E. May, Claudemiro Bolfarini, S.E. Kuri, Marcelo Falção de Oliveira, Cláudio Shyinti Kiminami,
The corrosion resistance of Fe–M–B–Cu alloys in which M is a transition metal of two first series, particularly concerning the effect of composition and also concerning the affect of corrosion on magnetic properties have not been evaluated. In this paper, the effect of composition and partial crystallization on corrosion resistance of Fe80Nb3.5Zr3.5B12Cu1, Fe80Nb3.5Mo3.5B12Cu1, Fe80Zr3.5Mo3.5B12Cu1 and Fe80Mo7B12Cu1 amorphous alloys and its effect on saturation magnetic flux density, Bs, were investigated ...
Tópico(s): Magnetic Properties and Applications
2001 - Elsevier BV | Journal of Non-Crystalline Solids
Produção Nacional
Revisado por pares
Artur Mariano de Sousa Malafaia, Marcelo Falção de Oliveira,
Fe–Mn–Si–Cr–Ni alloys are known by their shape memory properties, however, oxidation studies are still incipient. This study evaluated an Fe-17Mn-5Si-10Cr-4Ni-VC alloy on cyclic oxidation tests at 800, 900 and 1000 °C. Mass variation was evaluated and oxide layers were examined by SEM, EDS and XRD. An anomalous mass variation was observed: after initial spallation, the material restarted mass gain. The formed Mn-depleted zone changed the austenite microstructure to ferrite on the metal/oxide interface ...
Tópico(s): High Entropy Alloys Studies
2017 - Elsevier BV | Corrosion Science
Produção Nacional
Revisado por pares
Ali Abbas, Andrew T. Strong, David L. Diehl, Brian C. Brauer, Iris H. Lee, Rebecca Burbridge, J Zivný, Jennifer T. Higa, Marcelo Falcão, Ihab I. El Hajj, Paul R. Tarnasky, Brintha K. Enestvedt, Alexander R. Ende, Adarsh M. Thaker, Rishi Pawa, Priya A. Jamidar, Kartik Sampath, Eduardo Guimarães Hourneaux de Moura, Richard S. Kwon, Alejandro L. Suarez, Murad Aburajab, Andrew Y. Wang, Mohammad Shakhatreh, Vivek Kaul, Lorna Kang, Thomas E. Kowalski, Rahul Pannala, Jeffrey L. Tokar, A. Aziz Aadam, Demetrios Tzimas, Mihir S. Wagh, Peter V. Draganov, Jeffrey L. Ponsky, Bruce D. Greenwald, Lance Uradomo, Alyson A. McGhan, Shahrad Hakimian, Andrew S. Ross, Stuart Sherman, Benjamin L. Bick, Christopher E. Forsmark, Dennis Yang, Anand Gupte, Shailendra Chauhan, Steven J. Hughes, Karen Saks, Gennadiy Bakis, Adam W. Templeton, Michael D. Saunders, Alireza Sedarat, John A. Evans, Thiruvengadam Muniraj, Timothy B. Gardner, Almino Ramos, Marco Aurélio Santo, Andrew Nett, Gregory A. Coté, B. Joseph Elmunzer, Kulwinder S. Dua, Michael J. Nosler, Daniel S. Strand, Paul Yeaton, Shivangi Kothari, Asad Ullah, Pushpak Taunk, Patrick Brady, Haim Pinkas, Ashley L. Faulx, Haroon Shahid, Jordan Holmes, Davinderbir Pannu, Srinadh Komanduri, Juan Carlos Bucobo, Harry Dhaliwal, Alaa Rostom, Brent W. Acker,
Background and Aims The obesity epidemic has led to increased use of Roux-en-Y gastric bypass (RYGB). These patients have an increased incidence of pancreaticobiliary diseases, yet standard ERCP is not possible because of surgically altered gastroduodenal anatomy. Laparoscopy-assisted ERCP (LA-ERCP) has been proposed as an option, but supporting data are derived from single-center small case series. Therefore, we conducted a large multicenter study to evaluate the feasibility, safety, and outcomes of LA-ERCP. ...
Tópico(s): Gallbladder and Bile Duct Disorders
2017 - Elsevier BV | Gastrointestinal Endoscopy