Produção Nacional
Revisado por pares
Alessandra Vieira Guimarães, Rosa Maria Sales da Silveira, Luiz Henrique de Almeida, Leonardo Sales Araújo, Alexandre Bellegard Farina, Jean Dille,
The influence of yttrium (Y) addition on the microstructure and mechanical properties of alloy 718 was examined by scanning and transmission electron microscopy, energy dispersive spectroscopy and tensile tests. Two alloys with 0.1% and 1.0% weight Y contents and a reference alloy without Y addition were melted, forged and solution heat treated. The yield of Y after melting ranged between 50% and 60% over the nominal value added. Y addition decreased the oxygen, nitrogen and sulfur contents of the ...
Tópico(s): Microstructure and Mechanical Properties of Steels
2020 - Elsevier BV | Materials Science and Engineering A
Produção Nacional
Revisado por pares
Milena Almeida Santos, Filipe Nogueira Franco, Camila Amaro Caldeira, Glaucy Rodrigues de Araújo, Alessandra Vieira, Mı́riam Martins Chaves, Raquel Cunha Lara,
Aging is characterized by a progressive loss of physiological integrity. One common denominator is the increase of reactive oxygen species (ROS) caused by inhibition of important antioxidant pathways. Resveratrol is a polyphenol known for its potent antioxidant activity. However, antioxidant pathways activated by them change with aging. The objective of our study was to verify the antioxidant effect of resveratrol in an oxidative stress environment in Human Mononuclear Cells (PBMC) from donors with ...
Tópico(s): Genetics, Aging, and Longevity in Model Organisms
2020 - Elsevier BV | Archives of Gerontology and Geriatrics
Produção Nacional
Revisado por pares
Marcelo M. Pereira, Elisa S. Gomes, Alessandra Vieira Silva, Ana B. Pinar, Marc‐Georg Willinger, Sangaraju Shanmugam, Céline Chizallet, Guillaume Laugel, Pit Losch, Benoît Louis,
Biomass-mediated syntheses of ZSM-5 zeolites allowed crossing low Si/Al barrier, inducing high acidity, hence remarkably improving catalyst performance.
Tópico(s): Ammonia Synthesis and Nitrogen Reduction
2018 - Royal Society of Chemistry | Chemical Science
Produção Nacional
Revisado por pares
Alessandra Vieira Guimarães, P.C. Brasileiro, G.C. Giovanni, LUIZ R. COSTA, Leonardo Sales Araújo,
The formula SAE is a competition among students worldwide, where they are challenged to design, build and test a small formula-type racing car, following rules and specifications defined by the Society of Automotive Engineers (SAE). In the present analysis, a premature failure of a half-shaft of the transmission system of a racing car occurred after circa 100 km of use. The fractured component was analyzed by means of metallographic, chemical and mechanical analysis, fractography and finite element ...
Tópico(s): Mechanical Engineering and Vibrations Research
2016 - Elsevier BV | Case Studies in Engineering Failure Analysis
Produção Nacional
Alessandra Vieira Almeida, Simone Caldas Tavares Mafra, Emília Pio da Silva, Solange Kanso,
RESUMO – Dentro do processo de envelhecimento populacional, destaca-se a feminização da velhice, ou seja, o predomínio de mulheres na população idosa. Porém, viver mais pode não ser sinônimo de viver melhor. O objetivo deste estudo foi caracterizar o perfil socioeconômico, pessoal e familiar das idosas do "Clube da Vovó", em Viçosa/MG, além de identificar os tipos de riscos sociais enfrentados por elas associados a esse perfil. O estudo de caso foi realizado no ano de 2014. Tratou-se de um estudo qualitativo ...
Tópico(s): Aging and Gerontology Research
2015 - Editora da Pontifícia Universidade Católica do Rio Grande do Sul (EDIPUCRS) | Textos & Contextos (Porto Alegre)
Produção Nacional
Revisado por pares
Renato Heidor, Kelly Silva Furtado, Juliana Festa Ortega, Tiago Franco de Oliveira, Paulo Tavares, Alessandra Vieira, Mayara Lilian Paulino Miranda, Eduardo Purgatto, Fernando Salvador Moreno,
The chemopreventive activity of the histone deacetylase inhibitor (HDACi) tributyrin (TB), a prodrug of butyric acid (BA), was evaluated in a rat model of colon carcinogenesis. The animals were treated with TB (TB group: 200mg/100g of body weight, b.w.) or maltodextrin (MD isocaloric control group: 300 mg/100g b.w.) daily for 9 consecutive weeks. In the 3rd and 4th weeks of treatment, the rats in the TB and MD groups were given DMH (40 mg/kg b.w.) twice a week. After 9 weeks, the animals were euthanized, ...
Tópico(s): DNA Repair Mechanisms
2014 - Elsevier BV | Toxicology and Applied Pharmacology
Ana Cristina Canosa Gonçalves,
DIEHL, Alessandra; VIEIRA, Denise Leite (Orgs). Sexualidade do prazer ao sofrer. São Paulo: Editora Roca/Grupo GEN, 2013. 1ª edição. ...
Tópico(s): Psychology and Mental Health
2013 - | Revista Brasileira de Sexualidade Humana
Produção Nacional
Revisado por pares
Andréia Akemi Suzukawa, Alessandra Vieira, Sheila Maria Brochado Winnischofer, Alexsandra Cristina Scalfo, Paolo Di Mascio, Ana Maria da Costa Ferreira, Jean‐Luc Ravanat, Daniela de Luna Martins, Maria Eliane Merlin Rocha, Gláucia Regina Martinez,
Melanins have been associated with the development of melanoma and its resistance to photodynamic therapy (PDT). Singlet molecular oxygen ((1)O(2)), which is produced by ultraviolet A solar radiation and the PDT system, is also involved. Here, we investigated the effects that these factors have on DNA damage and repair. Our results show that both types of melanin (eumelanin and pheomelanin) lead to DNA breakage in the absence of light irradiation and that eumelanin is more harmful than pheomelanin. ...
Tópico(s): Skin Protection and Aging
2012 - Elsevier BV | Free Radical Biology and Medicine
Produção Nacional
Revisado por pares
Ana Maria Caliman Filadelfi, Alessandra Vieira, Fernando Mazzilli Louzada,
Ectothermic vertebrates can exhibit chromatic adaptation to the environment. The aim of this work was to characterize the rhythm of color change of the amphibian Bufo ictericus, submitted to different photoperiodic regimens, as quantified by skin reflectance values. Adult males were maintained under a 12:12 Light/Dark (LD) cycle during seven days before every experiment. During the experiments, animals were kept in individual boxes for 8 days, under the following photoperiodic regimens: LD 12:12, ...
Tópico(s): Physiological and biochemical adaptations
2005 - Elsevier BV | Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology
Produção Nacional
Revisado por pares
José Tavares de Sousa, Adrianus van Haandel, E.P.C. Lima, Alessandra Vieira Guimarães,
The purpose of this present paper is to verify the performance of three wetland systems operated with effluents from a UASB reactor, with respect nutrient removal (nitrogen and phosphorus), pathogenic organisms and remaining carbonaceous material, monitored over a three-year period. The experiment was carried out and monitored at PROSAB (Programa de Saneamento Básico) in Campina Grande, Paraíba. The removal efficiency of the carbonaceous material expressed in DQO ranged from 70 to 86%, but concerning ...
Tópico(s): Phosphorus and nutrient management
2003 - Pergamon Press | Water Science & Technology
Produção Nacional
Revisado por pares
Milena Almeida Santos, Filipe Nogueira Franco, Camila Amaro Caldeira, Glaucy Rodrigues de Araújo, Alessandra Vieira, Mı́riam Martins Chaves,
In the elderly, there is an increase in oxidative and inflammatory activity. Resveratrol (RSV) is a polyphenol that has several proven biological activities, such as antioxidant and anti-inflammatory. Thus, the aim of our study was to verify the possible antioxidant and anti-inflammatory effects of RSV on human mononuclear cells (PBMCs) from donors aged between 40 and 59 and 60-80 years old. For this, 6-8 patients were selected by age group. Cells were isolated and divided into 4 groups: Control (C), ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2022 - Elsevier BV | Archives of Gerontology and Geriatrics
Produção Nacional
Alessandra Vieira Cunha Marques, Cassius Klay Silva Santos, Francielly Dornelas Correia Lima, Patrícia de Souza Costa,
This study aims to analyze whether open company costs in Latin America countries do vary asymmetrically. We used a 669 open companies sample in nine countries of that region from 1995 to 2012. We applied log linear regressions estimated by Ordinary Least Squares (OLS) for panel data, assembling time series to transversal data (cross-section). The results suggest that the behavior of selling, general and administrative (SGA) expenses is asymmetric with respect to changes in sales revenue (SR). This research ...
Tópico(s): Working Capital and Financial Performance
2014 - European Scientific Institute | European Scientific Journal ESJ
Produção Nacional
Revisado por pares
Leonardo Sales Araújo, Alessandra Vieira Guimarães, Maisa Conceição de Siqueira, Matheus Campolina Mendes, Loic Mallet, D.S. dos Santos, Luiz Henrique de Almeida,
The nickel-base superalloy 718 is a precipitation hardened alloy widely used in the nuclear fuel assembly of pressurized water reactors (PWR). However, the alloy can experience failure due to hydrogen embrittlement (HE). The processing route can influence the microstructure of the material and, therefore, the HE degree. In particular, the size and distribution of the (Nb,Ti)C particles can be affected by the processing. In this regard, the objective of this work was to analyze the influence of cold ...
Tópico(s): High Temperature Alloys and Creep
2021 - Elsevier BV | International Journal of Hydrogen Energy
Produção Nacional
Revisado por pares
Alessandra Vieira Cunha Marques, Patrícia de Souza Costa, Pablo Rogers,
This study aims to investigate whether the different types of book-tax differences are useful for predicting the future income of publicly traded companies in five Latin American countries. This is possible since these differences convey information about transitory components of income, which can be used by investors for predicting future income. However, little is known about the relationship between tax variables and companies' future results. The sample analyzed here is composed of 580 publicly ...
Tópico(s): Taxation and Compliance Studies
2016 - UNIVERSIDADE DE SÃO PAULO | Revista Contabilidade & Finanças
Carlos Eduardo Andrade Chagas, Alessandra Vieira, Thomas Prates Ong, Fernando Salvador Moreno,
PURPOSE: To study farnesol (FOH) effects on liver regeneration after 70% partial hepatectomy (PH) in rats. METHODS: Animals received FOH (25 mg/100 g body weight/day) or corn oil (CO, 0.25 mL/100 g body weight/day, controls). After a 2 week-treatment, all animals were subjected to PH and euthanized at different time points (0 h, 0.5 h, 4 h, 8 h, 18 h and 24 h) after surgery. Hepatic cell proliferation (PCNA positive nuclei) and apoptosis (fluorescence microscopy) were evaluated. RESULTS: Compared to CO ...
Tópico(s): Liver Disease Diagnosis and Treatment
2009 - Sociedade Brasileira Para o Desenvolvimento da Pesquisa em Cirurgia | Acta Cirúrgica Brasileira
Produção Nacional
Revisado por pares
Edla Maria Bezerra Lima, Antonieta Middea, J. M. Marconcini, Ana Carolina Corrêa, Jéssica Fernandes Pereira, Alessandra Vieira Guimarães, Josimar Firmino de Lima, Marianna Ramos dos Anjos, I. M. de Castro, Renata Nunes Oliveira, Carla R. Moreira, Maurício M. Paiva, Francisco Luiz Correa Rangel, Reiner Neumann,
Abstract The effects of concentration and surface modification of two Brazilian bentonite clays on nanocomposites' properties based on polylactic acid – (PLA) were investigated. The samples were prepared by the extrusion/injection method to obtain biodegradable packaging plastics. The raw materials and their bionanocomposites were characterized by various techniques. Natural clay samples presented a size of around 2 μm while the modified ones' size was 5–6 μm, probably due to the presence of cetyltrimethylammonium ...
Tópico(s): Clay minerals and soil interactions
2021 - Wiley | Journal of Applied Polymer Science
Produção Nacional
Revisado por pares
Layse Biz de Quadros, Alessandra da Silva de Aguiar, Alessandra Vieira Menezes, Elysama Fernandes Alves, Tatyana Nery, Poliana Penasso Bezerra,
Incontinência urinária é definida como a perda involuntária de urina pela uretra podendo causar diversos problemas sociais e higiênicos, além de alterações que comprometem o convívio social como depressão, vergonha e isolamento, tendo maior prevalência nas mulheres do que nos homens. Objetivos: Determinar a prevalência de incontinência urinária em uma amostra de idosos institucionalizados e analisar sua relação com características sociodemográficas, comorbidades associadas, função cognitiva e independência ...
Tópico(s): Stoma care and complications
2015 - | Acta Fisiátrica
Produção Nacional
Revisado por pares
Alessandra Soares Vieira, Renato Farias do Valle, Vinícius Silva Rodrigues, Thiago Luiz da Silva Quinaia, Rafaella Gouveia Mendes, Carlos Alberto Valera, Luís Filipe Sanches Fernandes, Fernando António Leal Pacheco,
The inadequate management of soils and the absence of conservation practices favor the degradation of pastures and can trigger adverse environmental alterations and damage under the terms of Brazilian Federal Law no. 6.938/1981. Based on this premise, this study aimed to estimate soil losses caused by water erosion in pasture areas using the brightness index (BI) from the annual series of Landsat 8 images in different geological formations. A specifically prepared Google Earth Engine (GEE) script ...
Tópico(s): Remote Sensing and LiDAR Applications
2021 - Elsevier BV | The Science of The Total Environment
Produção Nacional
Revisado por pares
Alessandra Del Ré, Christelle Dodane, Aliyah Morgenstern, Alessandra Jacqueline Vieira,
In order to understand how children learn to recognize and use humor in their own cultural environment, we have chosen to study their production in two different languages and cultures. We studied a French-speaking monolingual child and a Brazilian Portuguese-speaking child, video-recorded once a month up to seven years old. The detailed multimodal linguistic coding of our data enabled us to draw the multimodal paths the two children followed from the first instances of shared amusement initiated ...
Tópico(s): Linguistics and Discourse Analysis
2020 - Cracow Tertium Society for the Promotion of Language Studies | European Journal of Humour Research
Produção Nacional
Revisado por pares
Alessandra Paula Vieira, Susanne Rath, Anne Hélène Fostier,
Sulfonamides are among the most widely employed antibacterial in veterinary medicine.Because a substantial proportion of sulfonamides are excreted unchanged as parent compounds after administration or are excreted as their metabolites through urine and feces, their presence in soils is a matter of concern.Adsorption and desorption are important processes that influence the transport, transformation and bioavailability of antimicrobials in soils, and data related to sorption capacity are therefore ...
Tópico(s): Pharmacological Effects and Toxicity Studies
2016 - Brazilian Chemical Society | Journal of the Brazilian Chemical Society
Produção Nacional
Revisado por pares
Alessandra Aparecida Vieira Machado, Anderson Oliveira Estevan, Antônio Sales, Kelly Cristina da Silva Brabes, Júlio Croda, Fábio Juliano Negrão,
Background Dengue, an arboviral disease, is a public health problem in tropical and subtropical regions worldwide. In Brazil, epidemics have become increasingly important, with increases in the number of hospitalizations and the costs associated with the disease. This study aimed to describe the direct costs of hospitalized dengue cases, the financial impact of admissions and the use of blood products where current protocols for disease management were not followed. Methods and Results To analyze ...
Tópico(s): Global Maternal and Child Health
2014 - Public Library of Science | PLoS neglected tropical diseases
Produção Nacional
Revisado por pares
Daisy Maria Machado, Maria Cristina Domingues Fink, Cláudio Mendes Pannuti, Regina Célia de Menezes Succi, Alessandra Aparecida Vieira Machado, Fabiana Bononi do Carmo, Aída de Fátima Barbosa Gouvêa, Paulo Roberto Palma Urbano, Suênia Vasconcelos Beltrão, Isabel Cristina Lopes dos Santos, Clarisse Martins Machado,
The aim of this study was to characterize the urinary excretion of the BK (BKV) and JC (JCV) human polyomaviruses in a cohort of human immunodeficiency virus (HIV)-infected children and adolescents. One hundred and fifty-six patients were enrolled: Group I included 116 HIV-infected children and adolescents [median age = 11.4 years (y); range 1-22 y]; Group II included 40 non-HIV-infected healthy controls (median age = 11.37 y; range 7-16 y). Single urine samples from both groups were screened for the presence ...
Tópico(s): Antenna Design and Analysis
2011 - Instituto Oswaldo Cruz, Ministério da Saúde | Memórias do Instituto Oswaldo Cruz
Produção Nacional
Revisado por pares
Alessandra Paula Vieira, Graciele Berndt, Ivan Granemann de Souza, Eduardo Di Mauro, Andrea Paesano, Henrique de Santana, Antônio Carlos Saraiva da Costa, Cássia Thaïs Bussamra Vieira Zaia, Dimas Augusto Morozin Zaia,
Tópico(s): Iron Metabolism and Disorders
2010 - Springer Science+Business Media | Amino Acids
Produção Nacional
Revisado por pares
Alessandra Paula Vieira, M. A. P. da Silva, Marta A. P. Langone,
The synthesis of ethyl hexadecanoate was carried out by esterification of palmitic acid with ethanol in a solvent-free system. A commercial immobilized lipase (Lipozyme RM-IM) was mixed with the reagents, in a 15 mL closed batch reactor with constant stirring and coupled with a condenser. The effects of palmitic acid/ethanol molar ratio (0.16 to 1.84), reaction temperature (65 to 75 o C) and en- zyme concentration (0.48 to 5.52% w/w) on the ini- tial reaction rate of ethyl hexadecanoate were de- termined ...
Tópico(s): Microbial Metabolic Engineering and Bioproduction
2006 - National University of the South | Latin American Applied Research - An international journal
Marcus Vinícius Morais de Oliveira, Juan Ramón Olalquiaga Pérez, Eduardo Luis Alves, Alessandra Rodrigues Vieira Martins, Rogério de Paula Lana,
Foram utilizados 21 cordeiros, nove da raça Bergamácia e 12 Santa Inês, os quais permaneceram confinados individualmente por 75 dias, sendo alimentados com dietas contendo 24% de dejetos de suínos, na forma de biju (dejeto obtido pela raspagem e varredura do piso das baias de crescimento e terminação) ou DPS - dejeto peneirado seco (constituído pela parte sólida do material contido na lâmina d'água e da água de lavagem das baias, obtida através de peneiras de malha fina). Os dejetos de suínos não influenciaram ...
Tópico(s): Agriculture Sustainability and Environmental Impact
2002 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia
Marcus Vinícius Morais de Oliveira, Juan Ramón Olalquiaga Pérez, Eduardo Luis Alves, Alessandra Rodrigues Vieira Martins, Rogério de Paula Lana,
Foram utilizados 21 cordeiros das raças Santa Inês e Bergamácia, confinados por um período de 75 dias, sendo alimentados com dietas contendo 24% de dejetos de suínos, na forma de biju (dejeto obtido pela raspagem e varredura do piso das baias de crescimento e terminação) ou dejeto peneirado seco - DPS (dejeto obtido através da peneiração da parte sólida do material contido na lâmina d'água e na água da lavagem das baias). Os animais foram abatidos aos 210 dias de idade, sendo determinados o peso e o ...
Tópico(s): Animal Nutrition and Physiology
2002 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia
Produção Nacional
Revisado por pares
Otávio Cintra, Miyoco Abe Owa, Alessandra Aparecida Vieira Machado, Maria Célia Cervi, L T Figueiredo, G.M. Rocha, Marilda Mendonça Siqueira, Eurico Arruda,
Abstract The frequency and severity of infections caused by respiratory syncytial virus (RSV) were assessed in children <2 years of age seen at the emergency department. The frequency of RSV detection in the clinical virology laboratory during the past 3 years was also analyzed retrospectively. RSV was found in 21.6% (188/869) of the samples collected from children seen at the emergency department and was found to be more frequent during the autumn, being less frequent or negligible by midwinter. RSV ...
Tópico(s): Pneumonia and Respiratory Infections
2001 - Wiley | Journal of Medical Virology
Alessandra Paula Vieira, M.A. Tovar, C. H. Pfaff, Bernardo Méndez, Carmen M. López, Francisco J. Machado, J. Goldwasser, M.M. Ramı́rez de Agudelo,
The catalytic transformations of n-butane were performed over a platinum-promoted manganese-substituted aluminophosphate molecular sieve (Pt/MnAPO-11), and over a Pt promoted manganese-supported aluminophosphate molecular sieve (Pt/Mn/AlPO4-11). For comparison purposes, the reactions were also carried out over a Pt-supported AlPO4-11 molecular sieve (Pt/AlPO4-11). X-ray diffraction (XRD) was used to determine the crystallographic structure of the unpromoted and Pt-promoted samples. Phosphorous 31-magic ...
Tópico(s): Catalytic Processes in Materials Science
1998 - Elsevier BV | Journal of Catalysis
Produção Nacional
Revisado por pares
Alessandra Vieira Menezes, Alessandra da Silva de Aguiar, Elysama Fernandes Alves, Layse Biz de Quadros, Poliana Penasso Bezerra,
Resumo O objetivo desta pesquisa foi verificar a efetividade de quatro meses de intervenção fisioterapêutica cognitivo-motora, com frequência semanal única, na cognição, mobilidade e independência funcional de idosos com comprometimento cognitivo e demência leves residentes em instituição. Sob um ensaio clínico controlado, 15 sujeitos foram alocados entre grupo experimental (GE) e controle (GC). Para avaliação dos sujeitos foram aplicados os instrumentos: Mini-Exame do Estado Mental, Teste de Fluência ...
Tópico(s): Stroke Rehabilitation and Recovery
2016 - ASSOCIAÇÃO BRASILEIRA DE SAÚDE COLETIVA | Ciência & Saúde Coletiva
Produção Nacional
Revisado por pares
Rosa Maria Sales da Silveira, Alessandra Vieira Guimarães, Clarissa Hadad de Melo, Rafaella Martins Ribeiro, Alexandre Bellegard Farina, Loïc Malet, Luiz Henrique de Almeida, Leonardo Sales Araújo,
The nickel-base alloy 718 is widely used due to its superior performance at high temperatures, combining properties such as high strength, high corrosion and oxidation resistances and good formability and weldability. Its properties can be further improved by controlled additions of alloying elements such as Ce, W, Mo, P, B and Y. The present work aims to evaluate the effect of the yttrium alloying on the phase transformation in alloy 718. Thermodynamic calculation, scanning electron microscopy, ...
Tópico(s): Additive Manufacturing Materials and Processes
2022 - Elsevier BV | Journal of Materials Research and Technology