... Essays on Cultural History, Theory and Aesthetics Sergio Figueiredo, Sergio Figueiredo Clemson UniversitySearch for more papers by this author Sergio Figueiredo, Sergio Figueiredo Clemson UniversitySearch for more papers by this author ...
Tópico(s): Multimedia Communication and Technology
2009 - Wiley | The Journal of Popular Culture
Produção Nacional
Revisado por pares
Daniela Corrêa Grisi, Sérgio Luiz de Souza Salvador, Luciene Cristina Figueiredo, Sérgio Luı́s Scombatti de Souza, Arthur B. Novaes, Márcio F. M. Grisi,
Abstract Aim: The aim of this study was to evaluate the effectiveness of a controlled‐released chlorhexidine chip (CHX) as adjunctive therapy to scaling and root planing (SRP) in the treatment of chronic periodontitis. Material and methods: Twenty patients with at least four sites with probing depth ≥ 5 mm and bleeding on probing were selected. This randomized single‐blind study was carried out in parallel design. The control group received SRP alone, while the test group received SRP plus CHX chip. ...
Tópico(s): Dental Health and Care Utilization
2002 - Wiley | Journal Of Clinical Periodontology
Produção Nacional
Revisado por pares
Ana Claúdia Polli-Lopes, Sérgio Zucoloto, Fernando de Queirós Cunha, Leandro Alves da Silva Figueiredo, Sérgio Britto Garcia,
The influence of myenteric denervation on the development of gastric tumors induced by N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) was studied after chemical denervation of the rat stomach with benzalkonium chloride (BAC). Three groups were evaluated: control, denervated and denervated with pyloroplasty. Random bred male Wistar rats were given MNNG in drinking water (100 mg/l) for 28 weeks. After the sacrifice of animals, the stomachs were removed for morphological study. BAC reduced myenteric neurons ...
Tópico(s): Helicobacter pylori-related gastroenterology studies
2003 - Elsevier BV | Cancer Letters
Produção Nacional
Revisado por pares
Andressa Teixeira Souza, Lucas de Mendonça Neuba, Raí Felipe Pereira Junio, Magno Torres Carvalho, Verônica Scarpini Cândido, André Ben‐Hur da Silva Figueiredo, Sérgio Neves Monteiro, Lúcio Fábio Cassiano Nascimento, Alisson Clay Rios da Silva,
Natural lignocellulosic fibers (NFLs) possess several economic, technical, environmental and social advantages, making them an ideal alternative to synthetic fibers in composite materials. Caranan fiber is an NFL extract from the leafstalk of the Mauritiella armata palm tree, endemic to South America. The present work investigates the addition of 10, 20 and 30 vol% caranan fiber in epoxy resin, regarding the properties associated with Izod notch tough and ballistic performance. Following ASTM D256 ...
Tópico(s): Tribology and Wear Analysis
2022 - Multidisciplinary Digital Publishing Institute | Polymers
Produção Nacional
Revisado por pares
Naiara Pirahi da Silva Chagas, Vinícius de Oliveira Aguiar, Fábio da Costa Garcia Filho, André Ben‐Hur da Silva Figueiredo, Sérgio Neves Monteiro, Noemi-Raquel Checca-Huaman, Maria de Fátima Vieira Marques,
Ultra-high molecular weight polyethylene (UHMWPE) is well known for its remarkable mechanical properties including excellent ballistic performance. These properties might be further improved by reinforcement fillers, especially nanoparticles (NPs). In the present work, UHMWPE is incorporated with 0.01, 0.05 and 0.1 wt% of boron carbide (B4C) NPs by twin-screw extrusion at 200 °C. These nanocomposites are characterized by high resolution transmission electron microscopy (HRTEM), scanning electron microscopy ( ...
Tópico(s): Diamond and Carbon-based Materials Research
2022 - Elsevier BV | Journal of Materials Research and Technology
Produção Nacional
Revisado por pares
Thuane Teixeira da Silva, Pedro Henrique Poubel Mendonça da Silveira, André Ben‐Hur da Silva Figueiredo, Sérgio Neves Monteiro, Matheus Pereira Ribeiro, Lucas de Mendonça Neuba, Noan Tonini Simonassi, Fábio da Costa Garcia Filho, Lúcio Fábio Cassiano Nascimento,
Several industry sectors have sought to develop materials that combine lightness, strength and cost-effectiveness. Natural lignocellulosic natural fibers have demonstrated to be efficient in replacing synthetic fibers, owing to several advantages such as costs 50% lower than that of synthetic fibers and promising mechanical specific properties. Polymeric matrix composites that use kenaf fibers as reinforcement have shown strength increases of over 600%. This work aims to evaluate the performance ...
Tópico(s): Mechanical Behavior of Composites
2022 - Multidisciplinary Digital Publishing Institute | Polymers
Produção Nacional
Revisado por pares
Matheus Pereira Ribeiro, Lucas de Mendonça Neuba, Pedro Henrique Poubel Mendonça da Silveira, Fernanda Santos da Luz, André Ben‐Hur da Silva Figueiredo, Sérgio Neves Monteiro, Mariane Oliveira Moreira,
Among the natural fibers, the hemp fiber extracted from the stem of Cannabis sativa is, after sisal, the second most applied as reinforcement of polymer composites and increasingly used from automotive to civil construction industries. Polypropylene (PP) is the most common hemp fiber-reinforced matrix. Despite numerous papers on the application of natural fibers reinforcing polymer composites for ballistic protection, only one was so far dedicated to hemp fibers/PP with this purpose. In the present ...
Tópico(s): Tribology and Wear Analysis
2021 - Elsevier BV | Journal of Materials Research and Technology
Produção Nacional
Revisado por pares
Michelle Souza Oliveira, Fernanda Santos da Luz, Andressa Teixeira Souza, Luana Cristyne da Cruz Demosthenes, Artur Pereira, Fábio da Costa Garcia Filho, Fábio de Oliveira Braga, André Ben‐Hur da Silva Figueiredo, Sérgio Neves Monteiro,
The replacement of synthetic fibers by natural fibers has, in recent decades, been the subject of intense research, particularly as reinforcement of composites. In this work, the lesser known tucum fiber, extracted from the leaves of the Amazon Astrocaryum vulgare palm tree, is investigated as a possible novel reinforcement of epoxy composites. The tucum fiber was characterized by pullout test for interfacial adhesion with epoxy matrix. The fiber presented a critical length of 6.30 mm, with interfacial ...
Tópico(s): Textile materials and evaluations
2020 - Multidisciplinary Digital Publishing Institute | Polymers
Produção Nacional
Revisado por pares
Pedro Henrique Félix Silva, Luiz Fernando Ferreira de Oliveira, Renata Silva Cardoso, Milla Sprone Tavares Ricoldi, Luciene Cristina Figueiredo, Sérgio Luiz de Souza Salvador, Daniela Bazan Palioto, Flávia Aparecida Chaves Furlaneto, Michel Reis Messora,
Abstract Background This study evaluated the effects of topical administration of Bdellovibrio bacteriovorus HD100 on experimental periodontitis (EP) in rats. Methods Thirty‐two rats were divided into groups C (control), EP, C‐HD100, and EP‐HD100. At day 0, animals of groups EP and EP‐HD100 received cotton ligatures around mandibular first molars (MFM). In groups C‐HD100 and EP‐HD100, 1 mL of suspensions containing B. bacteriovorus HD100 was topically administered in the subgingival region of MFMs ...
Tópico(s): Endodontics and Root Canal Treatments
2019 - Wiley | Journal of Periodontology
Produção Nacional
Revisado por pares
Mariana Sales de Melo Soares, Cristine D’Almeida Borges, Marcos de Mendonça Invernici, Fabiani Gai Frantz, Luciene Cristina Figueiredo, Sérgio Luı́s Scombatti de Souza, Mário Taba, Michel Reis Messora, Arthur B. Novaes,
Tópico(s): Oral Health Pathology and Treatment
2018 - Springer Nature | Clinical Oral Investigations
Produção Nacional
Revisado por pares
Pierre Belart, Iara Clemente, Débora Raposo, Renan Habib, Eduardo Volino, Amanda Villar, Maria Virgínia Alves Martins, Luiz Francisco Fontana, Maria Lúcia Lorini, Gabriel Di Panigai, Fabrizio Frontalini, Marcos de Souza Lima Figueiredo, Sergio Cadena Vasconcelos, Lazaro Laut,
The understanding of the differences between living (L) and dead (D) benthic foraminiferal assemblages and all the factors that might lead their distribution should be a key to characterize the environmental and paleoenvironmental changes accurately.Population dynamics and dissimilarities of biological nature (the differences in turnover rate and seasonal alterations in standing stock) can cause significant divergences between the L and D foraminiferal assemblages.This study compares L and D foraminifera ...
Tópico(s): Marine Biology and Ecology Research
2018 - Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso | Latin American Journal of Aquatic Research
Produção Nacional
Revisado por pares
Débora Trichez, Marilia M. Knychala, Catarina Macedo de Figueiredo, Sérgio L. Alves, Marcia A Silva, Luiz Cláudio Miletti, Pedro Soares De Araujo, Boris U. Stambuk,
Aims The AGT1 gene encodes for a general α-glucoside-H+ symporter required for efficient maltotriose fermentation by Saccharomyces cerevisiae. In the present study, we analysed the involvement of four charged amino acid residues present in this transporter that are required for maltotriose consumption and fermentation by yeast cells. Methods and Results By using a knowledge-driven approach based on charge, conservation, location, three-dimensional (3D) structural modelling and molecular docking analysis, ...
Tópico(s): Biofuel production and bioconversion
2018 - Oxford University Press | Journal of Applied Microbiology
Ana C. Gregório, Manuela Lacerda, Paulo Figueiredo, Sérgio Simões, Sérgio Dias, João Nuno Moreira,
A major challenge in the management of breast cancer disease has been the development of metastases. Finding new molecular targets and the design of targeted therapeutic approaches to improve the overall survival and quality of life of these patients is, therefore, of great importance. Nucleolin, which is overexpressed in cancer cells and tumor-associated blood vessels, have been implicated in various processes supporting tumorigenesis and angiogenesis. Additionally, its overexpression has been ...
Tópico(s): RNA Research and Splicing
2018 - Elsevier BV | Critical Reviews in Oncology/Hematology
Produção Nacional
Revisado por pares
Fernanda Santos da Luz, Flávio James Humberto Tommasini Vieira Ramos, Lúcio Fábio Cassiano Nascimento, André Ben‐Hur da Silva Figueiredo, Sérgio Neves Monteiro,
The several advantages of natural lignocellulosic fibers (NLFs), such as, economical, technical, environmental and social, make these fibers an alternative to replace synthetic fibers in composite materials. The application of NLF as reinforcements in polymeric composites has increased in many industrial sectors from civil construction to automobiles. This demands the characterization of promising fibers, such as those extracted from leaves of pineapple (PALF) and the mesocarp of coconut fruit (coir ...
Tópico(s): Fiber-reinforced polymer composites
2018 - Elsevier BV | Journal of Materials Research and Technology
Ana C. Gregório, Manuela Lacerda, Paulo Figueiredo, Sérgio Simões, Sérgio Dias, João Nuno Moreira,
Treatment and management of breast cancer imposes a heavy burden on public health care, and incidence rates continue to increase. Breast cancer is the most common female neoplasia and primary cause of death among women worldwide. The recognition of breast cancer as a complex and heterogeneous disease, comprising different molecular entities, was a landmark in our understanding of this malignancy. Valuing the impact of the molecular characteristics on tumor behavior enabled a better assessment of ...
Tópico(s): Cancer Cells and Metastasis
2017 - Springer Science+Business Media | Pathology & Oncology Research
Ana C. Gregório, Nuno A. Fonseca, Vera Moura, Manuela Lacerda, Paulo Figueiredo, Sérgio Simões, Sérgio Dias, João Nuno Moreira,
4T1 metastatic breast cancer model have been widely used to study stage IV human breast cancer. However, the frequent inoculation of a large number of cells, gives rise to fast growing tumors, as well as to a surprisingly low metastatic take rate. The present work aimed at establishing the conditions enabling high metastatic take rate of the triple-negative murine 4T1 syngeneic breast cancer model. An 87% 4T1 tumor incidence was observed when as few as 500 cancer cells were implanted. 4T1 cancer ...
Tópico(s): Nanoplatforms for cancer theranostics
2016 - Public Library of Science | PLoS ONE
Produção Nacional
Revisado por pares
P. A. S. Abranches, Eduardo Vinícius Vieira Varejão, CRISTIANE MARIA DA SILVA, Ângelo de Fátima, Thais F.F. Magalhães, Danielle L. da Silva, Maria Aparecida de Resende, Filipa S. Reis, Clébio S. Nascimento, Wagner B. De Almeida, Isis Martins Figueiredo, Sérgio Antônio Fernandes,
Aiming at providing new formulations capable of improving the biopharmaceutical properties of fluconazole, we studied the formation of host–guest complexes of this antifungal agent with water-soluble sodium p -sulfonatocalix[ n ]arenes.
Tópico(s): Carbohydrate Chemistry and Synthesis
2015 - Royal Society of Chemistry | RSC Advances
Produção Nacional
Revisado por pares
Bárbara B. Garrido‐Suárez, Gabino Garrido, Marian Castro-Labrada, Nelsón Merino, Odalys Valdés, Idania Rodeiro, I. Muñoz Reja Hernandez, Jozi Godoy-Figueiredo, Sérgio H. Ferreira, René Delgado,
The present study examines the possible effect of the glucosylxanthone mangiferin (MG) on pain-related behaviors in a tonic acute pain model (formalin test at 5%) and in a chronic constriction injury (CCI) model to clarify the underlying transient and long-term mechanisms. Acute administration of MG (10–100 mg/kg, i.p.) reduced licking/biting exclusivity in the tonic phase of formalin test in a naloxone and yohimbine-sensitive manner. This effect was enhanced by a nonselective nitric oxide synthase ( ...
Tópico(s): Pain Mechanisms and Treatments
2014 - Elsevier BV | Pharmacology Biochemistry and Behavior
Produção Nacional
Revisado por pares
Renato Pereira Lopes, Ângela Kinoshita, Oswaldo Baffa, Ana Maria Graciano Figueiredo, Sérgio R. Dillenburg, César Leandro Schultz, Jamil Corrêa Pereira,
The Coastal Plain of Rio Grande do Sul state (CPRS), in southern Brazil, encompasses four barrier-lagoon depositional systems formed by marine highstands during the Quaternary, but the ages of the Pleistocene systems older than ∼125 ka are not precisely known due to the lack of numerical dates. In order to refine the chronology of these deposits, several fossils of terrestrial mammals collected in the fluvial facies of the Lagoon System III and fossil shells from the marine facies of the Barrier System ...
Tópico(s): Geology and Paleoclimatology Research
2013 - Elsevier BV | Quaternary International
Produção Nacional
Revisado por pares
Alexander W. A. Kellner, Rodrigo G. Figueiredo, Sergio Alex Kugland de Azevedo, Diógenes de Almeida Campos,
A new species of Notosuchia, Labidiosuchus amicum gen. et sp. nov., is described based on an incomplete lower jaw (DGM 1480-R) from the Upper Cretaceous Marília Formation (Maastrichtian) recovered from a quarry near the Peirópolis municipality, Minas Gerais State, Southeastern Brazil. The mandibular symphysis is long, strong anterodorsally projected and 'Y-shaped'. The bizarre dentition is formed by at least eight teeth placed in a symphyseal tooth battery, some located lateral to each other. The first ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2011 - Oxford University Press | Zoological Journal of the Linnean Society
Produção Nacional
Revisado por pares
Silvana Gama Florêncio Chachá, Sandro da Costa Ferreira, Tarciana Vieira Costa, Luiz Carlos de Almeida Filho, Márcia G. Villanova, Fernanda Fernandes Souza, Andreza Corrêa Teixeira, José Fernando de Castro Figueiredo, Sérgio Zucoloto, Leandra Naíra Zambelli Ramalho, Afonso Dinis da Costa Passos, Ana de Lourdes Candolo Martinelli,
INTRODUCTION: Hepatitis B is common in Brazil, although there are regional differences regarding the degree of endemicity, the most frequent forms of transmission and the presence of different evolutive stages of chronic disease. The present study aimed to determine the clinical, demographic and epidemiological characteristics of patients chronically infected with hepatitis B virus (HBV) residing in the Ribeirão Preto region, southeastern Brazil. METHODS: A total of 529 medical records of individuals ...
Tópico(s): Hepatitis Viruses Studies and Epidemiology
2011 - Brazilian Society of Tropical Medicine | Revista da Sociedade Brasileira de Medicina Tropical
Produção Nacional
Revisado por pares
Clebert José Alves, Salomão Moreira de Figueiredo, Sérgio Santos de Azevêdo, Inácio José Clementino, Lara Borges Keid, Sílvio Arruda Vasconcellos, Carolina de Sousa Américo Batista, Vivianne Cambuí Mesquita Rocha, Severino Silvano dos Santos Higino,
To determine the presence of Brucella ovis in ovine from Paraíba State, in the Northeast region of Brazil, 80 animals slaughtered in the public slaughterhouse of Patos city were used. Before slaughter, blood samples were collected by jugular venopuncture from each animal, and after slaughter, testicles, epidydimus and uterus were aseptically collected. For the serological diagnosis of B. ovis and B. abortus infections, the agar gel immunodiffusion (AGID) and Rose Bengal (RBT) tests were carried out, ...
Tópico(s): Galectins and Cancer Biology
2010 - Springer Nature | Brazilian Journal of Microbiology
Produção Nacional
Revisado por pares
José Alexandre de Andrade, Magda Feres, Luciene Cristina Figueiredo, Sérgio Luiz de Souza Salvador, Sheila Cavalca Cortelli,
The aim of this study was to evaluate the ability of the BANA Test to detect different levels of Porphyromonas gingivalis, Treponema denticola and Tannerella forsythia or their combinations in subgingival samples at the initial diagnosis and after periodontal therapy. Periodontal sites with probing depths between 5-7 mm and clinical attachment level between 5-10 mm, from 53 subjects with chronic periodontitis, were sampled in four periods: initial diagnosis (T0), immediately (T1), 45 (T2) and 60 days ( ...
Tópico(s): Dental Radiography and Imaging
2010 - Brazilian Society of Dental Research | Brazilian Oral Research
Produção Nacional
Revisado por pares
Juliana Milanez, Alberthmeiry T. de Figueiredo, Sérgio Ricardo de Lázaro, V. M. Longo, R. Erlo, Valmor Roberto Mastelaro, R. Franco, E. Longo, José A. Varela,
In this paper, electron paramagnetic resonance, photoluminescence (PL) emission, and quantum mechanical calculations were used to observe and understand the structural order-disorder of CaTiO3, paying special attention to the role of oxygen vacancy. The PL phenomenon at room temperature of CaTiO3 is directly influenced by the presence of oxygen vacancies that yield structural order-disorder. These oxygen vacancies bonded at Ti and/or Ca induce new electronic states inside the band gap. Ordered and ...
Tópico(s): Electronic and Structural Properties of Oxides
2009 - American Institute of Physics | Journal of Applied Physics
Produção Nacional
Revisado por pares
V. M. Longo, Alberthmeiry T. de Figueiredo, Sérgio Ricardo de Lázaro, Maria Fernanda do Carmo Gurgel, M. G. S. Costa, C.O. Paiva-Santos, J.A. Varela, E. Longo, Valmor Roberto Mastelaro, Fábio S. de Vicente, Antônio Carlos Hernandes, R. Franco,
Complex cluster [TiO5⋅VOz] and [SrO11⋅VOz] (where VOz=VOX, VO•, VO••) vacancies were identified in disordered SrTiO3 powders prepared by the polymeric precursor method, based on experimental measurements by x-ray absorption near edge structure spectroscopy. The paramagnetic complex states of [TiO5⋅VO•] and [SrO11⋅VO•] with unpaired electrons were confirmed by electron paramagnetic resonance spectroscopy. The disordered powders showed strong photoluminescence at room temperature. Structural defects of ...
Tópico(s): Luminescence Properties of Advanced Materials
2008 - American Institute of Physics | Journal of Applied Physics
Produção Nacional
Revisado por pares
Flávia Matarazzo, Luciene Cristina Figueiredo, Sérgio Eduardo Braga da Cruz, Marcelo Faveri, Magda Feres,
Abstract Aim: The aim of this study was to evaluate the clinical and microbiological effects of scaling and root planing (SRP) alone or combined with metronidazole (MTZ) or with MTZ and amoxicillin (AMX) in the treatment of smokers with chronic periodontitis. Methods: A double‐blind, placebo‐controlled, randomized clinical trial was conducted in 43 subjects who received SRP alone ( n =15) or combined with MTZ (400 mg 3 × per day, n =14) or with MTZ+AMX (500 mg 3 × per day, n =14) for 14 days. Clinical and microbiological ...
Tópico(s): HIV/AIDS oral health manifestations
2008 - Wiley | Journal Of Clinical Periodontology
Produção Nacional
Revisado por pares
João Neiva de Figueiredo, Sérgio Fernando Mayerle,
The problem of designing minimum-cost recycling networks with required throughput is a subset of the broader class of facility location problems in which the recycler wishes to determine the optimal number and location of receiving centers as well as the correct financial incentive to be offered in order to stimulate collection of used or unrecoverable products to a degree required for regulatory reasons or otherwise. This paper presents a conceptual framework, an analytical model, and a three-stage ...
Tópico(s): Recycling and Waste Management Techniques
2007 - Elsevier BV | Transportation Research Part E Logistics and Transportation Review
Sara C. Antunes, Daniela R. de Figueiredo, Sérgio Marques, Bruno B. Castro, Ruth Pereira, Fernando Gonçalves,
Uranium mining activities in Cunha Baixa, Mangualde (Portugal), were extensive between 1967 and 1993, with high production of poor ore. Ore exploitation left millions of tons of tailings in the surrounding area, close to human houses. Contamination of the area (water and soil compartment) presently represents a serious hazard to humans and wildlife. The aim of this work was to evaluate the acute toxicity of water and sediments from a pond that floods a uranium mine pit, in two periods (spring and autumn). ...
Tópico(s): Water Quality and Pollution Assessment
2007 - Elsevier BV | The Science of The Total Environment
Produção Nacional
Rafael Zambelli Pinto, Thales R. Souza, Renato Guilherme Trede Filho, Renata Noce Kirkwood, Elyonara Mello Figueiredo, Sérgio T. Fonseca,
Excessive foot pronation has been associated with the occurrence of low back pain, possibly for generating changes in the lumbopelvic alignment. However, the influence of foot pronation (measured as calcaneal eversion) on pelvic alignment during standing has not been well established. Fourteen young healthy subjects participated in the study. A Motion Analysis System was used to obtain pelvic positions in sagittal and frontal planes and calcaneal position in the frontal plane. Volunteers were filmed ...
Tópico(s): Lower Extremity Biomechanics and Pathologies
2007 - Elsevier BV | Manual Therapy
Produção Nacional
Revisado por pares
Raul Matsushita, Iram Gléria, Annibal Figueiredo, Sérgio Da Silva,
Based on long-range dependence, some analysts claim that the exchange rate time series of the pound sterling and of an artificially extended euro have been locked together for years despite daily changes [M. Ausloos, K. Ivanova, Physica A 286 (2000) 353; K. Ivanova, M. Ausloos, False EUR exchange rates vs DKK, CHF, JPY and USD. What is a strong currency? in: H. Takayasu (Ed.), Empirical Sciences in Financial Fluctuations: The Advent of Econophysics, Springer-Verlag, Berlin, 2002, pp. 62–76]. They conclude ...
Tópico(s): Statistical Mechanics and Entropy
2007 - Elsevier BV | Physics Letters A