Pesquisa | SciELO

Abstract The aim of this study was to describe the prevalence, clinicopathological, and prognostic features of acinic cell carcinoma (AciCC) of the oral and maxillofacial region. AciCC cases were retrospectively retrieved from 11 pathology centers of three different countries. Medical records were examined to extract demographic, clinical, pathologic, and follow-up information. A total of 75 cases were included. Females (65.33%) with a mean age of 45.51 years were mostly affected. The lesions usually presented as an asymptomatic (64.28%) nodule (95.66%) in the parotid gland (70.68%). The association of two histopathological patterns was the most common finding (48.93%) and the tumors presented mainly conventional histopathological grades (86.11%). Surgical treatment was performed in the majority of the cases (59.19%). Local recurrence was observed in 20% of the informed cases, regional metastasis in 30.43%, and distant metastasis in 12.50%. The statistical analysis showed that the cases with a solid histopathological pattern (p=0.01), high-grade transformation (p=0.008), recurrence (p=0.007), and regional metastasis (p=0.03) were associated with poor survival. In conclusion, high histopathological transformation, presence of nodal metastasis, and recurrence were prognostic factors for AciCC of the oral and maxillofacial region.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0050

Contribution of public oral pathology services to the diagnosis of oral and oropharyngeal cancer in Brazil
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LOUREDO, Brendo Vinicius Rodrigues

; CURADO, Maria Paula

; PENAFORT, Paulo Victor Mendes

; DE ARRUDA, José Alcides Almeida

; ABREU, Lucas Guimarães

; MESQUITA, Ricardo Alves

; PINTO-JÚNIOR, Décio dos Santos

; ABRAHÃO, Aline Corrêa

; ANDRADE, Bruno Augusto Benevenuto de

; AGOSTINI, Michelle

; MORAES, Renata Mendonça

; ANBINDER, Ana Lia

; DOURADO, Pedro Henrique Silva

; SANTOS, Teresa Cristina Ribeiro Bartholomeu dos

; PIRES, Fábio Ramoa

; BORDIGNON, Natalia Cristina Trentin

; GONDAK, Rogério Oliveira

; DE OLIVEIRA, Marcia Gaiger

; CARRARD, Vinicius Coelho

; MARTINS, Manoela Domingues

; SOUSA-NETO, Sebastião Silvério

; ARANTES, Diego Antônio Costa

; MENDONÇA, Elismauro Francisco

; CIESLAK-SANCHES, Silvia Roberta

; ANTUNES, Daniella Moraes

; AMARAL-SILVA, Gleyson Kleber do

; MANIERI, Patricia Rubia

; RAMALHO, Luciana Maria Pedreira

; DOS SANTOS, Jean Nunes

; LEONEL, Augusto César Leal da Silva

; PEREZ, Danyel Elias da Cruz

; VERHEUL, Hannah Carmem Carlos Ribeiro Silva

; BARROSO, Keila Martha Amorim

; RODRIGUES, Flávia Luiza Santos

; GONZAGA, Amanda Katarinny Goes

; FERNANDES, Romana Renery

; DE SOUZA, Lélia Batista

; SOUZA, Lucas Lacerda de

; PONTES, Flávia Sirotheau Corrêa

; PONTES, Hélder Antônio Rebelo

; SILVA, Caroline Alfaia

; CÂMARA, Jeconias

; LIBÓRIO-KIMURA, Tatiana Nayara

; SANTOS-SILVA, Alan Roger

; LOPES, Márcio Ajudarte

; ALMEIDA, Oslei Paes de

; ROMAÑACH, Mário José

; VARGAS, Pablo Agustin

Brazilian Oral Research

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2023, Volume 37 elocation e126

Resumo: En | Texto: En | PDF: En

Abstract This study aimed to evaluate the contribution of oral and maxillofacial pathology laboratories (OMPLs) in Brazilian public universities to the diagnosis of lip, oral cavity, and oropharyngeal squamous cell carcinoma (SCC). A cross-sectional study was performed using biopsy records from a consortium of sixteen public OMPLs from all regions of Brazil (North, Northeast, Central-West, Southeast, and South). Clinical and demographic data of patients diagnosed with lip, oral cavity, and oropharyngeal SCC between 2010 and 2019 were collected from the patients’ histopathological records. Of the 120,010 oral and maxillofacial biopsies (2010-2019), 6.9% (8,321 cases) were diagnosed as lip (0.8%, 951 cases), oral cavity (4.9%, 5,971 cases), and oropharyngeal (1.2%, 1,399 cases) SCCs. Most cases were from Brazil’s Southeast (64.5%), where six of the OMPLs analyzed are located. The predominant profile of patients with lip and oral cavity SCC was Caucasian men, with a mean age over 60 years, low schooling level, and a previous history of heavy tobacco consumption. In the oropharyngeal group, the majority were non-Caucasian men, with a mean age under 60 years, had a low education level, and were former/current tobacco and alcohol users. According to data from the Brazilian National Cancer Institute, approximately 9.9% of the total lip, oral cavity, and oropharyngeal SCCs reported over the last decade in Brazil may have been diagnosed at the OMPLs included in the current study. Therefore, this data confirms the contribution of public OMPLs with respect to the important diagnostic support they provide to the oral healthcare services extended by the Brazilian Public Health System.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0126

Comparing quality parameters obtained using destructive and optical methods in grading tomatoes
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Silva, Thainara Rebelo da

; Costa, Anderson Gomide

; Paes, Juliana Lobo

; Oliveira, Marcus Vinícius Morais de

; Pinto, Francisco de Assis de Carvalho

Revista Ciência Agronômica

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2021, Volume 52 Nº 3 elocation e20207475

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO A aplicação de métodos ópticos para análise da qualidade de frutos apresenta vantagens em comparação a métodos convencionais, tais como, a não destruição da amostra e a possibilidade de automatizar processos de controle de qualidade. Objetivou-se com este trabalho comparar redes neurais artificiais desenvolvidas a partir de índices de atividade biológica obtidos pela técnica óptica do biospeckle laser e a partir das variáveis físico-químicas obtidas por técnicas convencionais destrutivas, avaliando o acerto de classificação quanto a maturação de tomates utilizando como referência uma classificação previamente realizada por inspeção visual. Para realização do experimento foram utilizados 150 tomates divididos em três estádios de maturação. A análise multivariada de componentes principais foi realizada visando avaliar a interação da variância dentro dos grupos de dados obtidos pela técnica do biospeckle laser e pelos métodos laboratoriais destrutivos. Duas redes neurais artificiais foram desenvolvidas, sendo a primeira rede neural gerada utilizando os índices de atividade biológica como vetores de entrada e a segunda rede neural gerada utilizando as variáveis físico-químicas como vetores de entrada. A comparação da capacidade de acerto entre as duas redes neurais, tendo como base uma classificação de referência, foi realizada a partir dos parâmetros índice Kappa e exatidão global. A variância da maturação em função dos índices de atividade biológica pôde ser explicada pelo primeiro componente principal. A rede neural gerada a partir dos índices de atividade biológica apresentou melhor desempenho para classificar os tomates nos três estádios de maturação apresentando índice Kappa significativo e uma exatidão global de 67,5%.

ABSTRACT Optical methods for analysing fruit quality have various advantages compared to conventional methods, including not destroying the sample and the possibility of automating the quality control process. The aim of this study was to compare artificial neural networks developed from biological activity indices obtained using the biospeckle laser optical technique, and from physico-chemical variables obtained by conventional destructive techniques, through an evaluation of their precision in classifying ripe tomatoes, using as a reference an earlier classification carried out by visual inspection. A total of 150 tomatoes were used in the experiment, divided into three ripening stages. Multivariate principal component analysis was used to evaluate interaction of the variance within the groups of data obtained using the biospeckle laser technique and destructive laboratory methods. Two artificial neural networks were developed, the first generated using biological activity indices as input vectors, and the second using physico-chemical variables. The precision of the two neural networks was compared using the Kappa index and overall accuracy, and was based on a reference classification. The variation in ripening as a function of the biological activity indices was explained by the first principal component. The neural network generated from the biological activity indices showed the best performance in classifying the tomatoes into the three ripening stages, with a significant Kappa index and an overall accuracy of 67.5%.

https://doi.org/10.5935/1806-6690.20210066 32 downloads

Contribuição da Revista Ciência & Saúde Coletiva para a área de Alimentação e Nutrição no Brasil
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Fonseca, Vania Matos

; Rebelo, Fernanda

; Marano, Daniele

; Abranches, Andrea Dunshee de

; Amaral, Yasmin Notarbartolo di Villarosa do

; Xavier, Vanessa Mendes

; Vasconcelos, Francisco de Assis Guedes de

Ciência & Saúde Coletiva

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Dez 2020, Volume 25 Nº 12 Páginas 4863 - 4874

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Revisão sistemática realizada em janeiro de 2020 na base de dados SciELO com o objetivo de analisar a produção científica da Revista Ciência & Saúde Coletiva na área de alimentação e nutrição no período 1996-2019. A busca resultou em 904 artigos e 509 foram selecionados após leitura dos títulos e resumos. Os artigos foram agrupados em dez temas, sendo discutidos os de maior frequência: Avaliação do Estado Nutricional (n=142), Consumo Alimentar (n=111), Políticas e Programas de Alimentação e Nutrição (n=105) e Aleitamento Materno (n=35). As publicações foram em sua maioria artigos originais (75,6%) com método quantitativo (81,6%) e, entre estes, 18,8% utilizaram amostra probabilística. Observou-se um amplo leque de temas e subtemas abordados, evidenciando uma produção relevante que constitui um repositório importante de dados e conhecimentos para profissionais e gestores da área da saúde. Como lacunas, observou-se a escassez de publicações voltadas para a deficiência de micronutrientes; a popularização do Guia Alimentar para População Brasileira; a promoção da ascensão do aleitamento materno; os diagnósticos da descontinuidade da Política Nacional de Segurança Alimentar e Nutricional e suas articulações intersetoriais com as políticas sociais de combate à fome.

Abstract A systematic review conducted in January 2020 using SciELO database with the objective of analyzing the scientific production from 1996-2019, of the Journal Ciência & Saúde Coletiva in the area of food and nutrition. We selected 509 out of the 904 articles screened by titles and abstracts. We grouped the articles into ten themes and discussed the most frequent ones: Nutritional Status Assessment (n=142), Food Intake (n=111), Food and Nutrition Policies and Programmes (n=105) and Breastfeeding (n=35). The publications were mostly original articles (75.6%) employing quantitative method (81.6%) and, among these, 18.8% used a probabilistic sampling. We assembled a wide range of topics and subthemes, a relevant production and repository of data and knowledge for health professionals and managers. As gaps, there was a scarcity of publications focused on micronutrient deficiency; the promotion of the Food Guide for the Brazilian Population; supporting the rise of breastfeeding, the impact and analyses of the disruption of the National Food and Nutrition Security Policy and its multi sector interactions with social policies to fight hunger.

https://doi.org/10.1590/1413-812320202512.16732020 1305 downloads

Contribuição da Revista Ciência & Saúde Coletiva para a área de Alimentação e Nutrição no Brasil
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Fonseca, Vania Matos

; Rebelo, Fernanda

; Marano, Daniele

; Abranches, Andrea Dunshee de

; Amaral, Yasmin Notarbartolo di Villarosa do

; Xavier, Vanessa Mendes

; Vasconcelos, Francisco de Assis Guedes de

Ciência & Saúde Coletiva

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Dez 2020, Volume 25 Nº 12 Páginas 4863 - 4874

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/1413-812320202512.16732020

Chromosomal characterization of Amazonian freshwater stingrays with evidence for new karyomorphs and XX/XY sex chromosomes
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Valentim, Francisco Carlos de Souza

; Porto, Jorge Ivan Rebelo

; Feldberg, Eliana

Genetics and Molecular Biology

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Set 2019, Volume 42 Nº 3 Páginas 578 - 593

Resumo: En | Texto: En | PDF: En

Abstract Cytogenetic studies in the subfamily Potamotrygoninae have provided valuable insights into the understanding of the evolution and diversification of its species. In the present study, the chromosomal features of seven nominal potamotrygonin species are provided: Plesiotrygon iwamae (2n=74, FN=120), Potamotrygon amazona (2n=66, FN=107), P. constellata (2n=66, FN=110), P. leopoldi (2n=64, FN=102), P. motoro (2n=66, FN=106) from four different localities, and P. orbignyi (2n=66, FN=106), P. scobina (2n=66, FN=104), from Central Amazon. Additionally, we found a new karyomorph in P. wallacei. We considered the localization of Nucleolus Organizer Regions (NORs), as well as the pattern of constitutive heterochromatin, as species-specific characters. We found an XX/XY sex chromosome system in P. orbignyi, and we suggest that P. scobina and P. amazona also possess the same sex chromosome system. Overall, the chromosomal evolution in this group appears to have progressed towards a reduction in diploid number, with a concomitant increase in the number of bi-armed and nucleolar chromosomes.

https://doi.org/10.1590/1678-4685-gmb-2018-0229 1213 downloads

Results of Scharioth macular lens implant in patients with age-related macular degeneration
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Medeiros, Felipe Beltrão

; Rebelo, Paulo Bernardo Ferreira

; Medeiros, Hilton Arcoverde Gonçalves de

; Porfirio-Neto, Francisco

Revista Brasileira de Oftalmologia

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Mar 2019, Volume 78 Nº 2 Páginas 127 - 129

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Objetivo: Descrever os resultados em termos de acuidade visual para perto e qualidade de vida em 10 pacientes submetidos ao implante de Lentes Maculares Scharioth. Local: Clínica de Olhos João Eugênio, Brasilia, Brasil. Design: Ensaio clínico não controlado. Métodos: Dez pacientes pseudofácicos com DMRI foram submetidos ao implante de SML intraocular no olho dominante no período de dezembro de 2017 a março de 2018. Todos os pacientes responderam ao Questionário de Qualidade de Vida em Baixa Visão (LVQOLQ) antes e após a cirurgia, com intervalo de 30 dias. Resultados: Os pontos de resultados mostraram uma melhora estatisticamente significativa (p <0,001) na acuidade visual para perto (AVP), sem interferência na visão à distância. Todos os pacientes tiveram melhora significativa (p <0,05) no LVQOLQ no item que avalia a acuidade visual para perto. Conclusão: Houve melhora na AVP em todos os 10 pacientes, além de um aumento da qualidade de vida no período pós-operatório quando comparado ao período pré-operatório.

Abstract Objective: To describe the outcomes in terms of near visual acuity and quality of life in 10 patients submitted to Scharioth Macular Lens implantation. Setting: João Eugênio Eye Institute, Brasilia, Brazil. Design: Uncontroled clinical trial. Methods: Ten pseudophakic patients with DMRI were submitted to the implantation of intraocular SML in the dominant eye in the period of December of 2017 to the March of 2018. All the patients had answered the Low-Vision Quality of Life Questionaire (LVQOLQ) before and after the surgery, with interval of 30 days. Results: The results points showed a statistical significant improvement (p<0.001) in the near visual acuity (NVA), without interference in the distance vision. All patients had significant improvements (p<0,05) in LVQOLQ on the item that evaluates the near visual acuity. Conclusion: There was an improvement of NVA in all 10 patients, as well as an enhancement to the quality of life in the postoperative period when compared to the preoperative period.

https://doi.org/10.5935/0034-7280.20180110 977 downloads

A large outbreak of Legionnaires' Disease in an industrial town in Portugal
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George, Francisco

; Shivaji, Tara

; Pinto, Catia Sousa

; Serra, Luis Antonio Oliveira

; Valente, João

; Albuquerque, Maria João

; Vicêncio, Paula Cristina Olivença

; San-Bento, Ana

; Diegues, Paulo

; Nogueira, Paulo Jorge

; Marques, Teresa

; Rebelo, Helena

; Costa, Filipa

; Rodrigues, Raquel

; Nunes, Alexandra

; Borges, Vitor

; Gomes, João Paulo

; Sampaio, Daniel

; Barreiro, Paula

; Duarte, Silvia

; Carpinteiro, Dina

; Mendonça, Joana

; Silva, Catarina

; Vieira, Luís

; Simões, Maria Joao

; Gonçalves, Paulo

; Nunes, Baltazar

; Dias, Carlos

; Machado, Jorge

; Almeida, Fernando

; Goncalves, Elsa A

; Carvalho, Lucilia

; Viterbo, Pedro

; Jardim, Dilia

; Lacasta, Nuno

; Boavida, Filomena

; Perez, Ana

; Santana, Isabel

; Matias, Paula

; Banza, Nuno

; Rabacal, Carlos

Revista Portuguesa de Saúde Pública

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Out 2016, Volume 34 Nº 3 Páginas 199 - 208

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Contexto Descrevemos a investigação epidemiológica e medidas de controlo de um surto de doença dos Legionários, ocorrido em Portugal em outubro, novembro e dezembro de 2014. Métodos A definição de caso englobou doentes com critérios clínicos de pneumonia aguda, com provas imagiológicas compatíveis e confirmação laboratorial para a identificação de Legionella pneumophila (L. pneumophila) serogrupo 1, para além do critério epidemiológico de exposição, quer por motivos de residência, ocupacional ou lazer nas freguesias suspeitas. Quarenta e nove possíveis fontes de infeção foram reduzidas a 4 potenciais fontes, após avaliação de risco, todas as indústrias com sistema de torres de arrefecimento. A georreferenciação por residência dos casos e localização de torres permitiu definir 4 áreas de investigação num perímetro de 10 km centrado em cada uma daquelas 4 torres. Comparou-se o número de casos observados com o número de casos esperados, calculados a partir de taxas de ataque do surto aplicadas à população. Usando o teste de Stones, testou-se a razão entre casos observados e casos esperados e declínio do risco em relação à distância de até 10 km em 4 direções. As amostras de L. pneumophila foram comparadas utilizando métodos moleculares. Resultados Foram identificados 403 casos, dos quais 377 foram confirmados, tendo ocorrido 14 óbitos. Os doentes apresentaram sintomas entre 14 de outubro e 2 de dezembro. Em termos meteorológicos, foram registados ventos NE e inversão térmica durante o período estimado de exposição. O risco de doença foi maior em pessoas que vivem a sudoeste de todas as indústrias identificadas, diminuindo com o aumento da distância (p < 0,001). Amostras de 71 dos casos clínicos demonstraram um perfil SBT idêntico às amostras isoladas a partir de uma torre de arrefecimento. A sequência de genoma de L. pneumophila fraseri serogrupo 1 pouco comum como a estirpe causadora do surto confirmou a relação das amostras isoladas. Conclusões Torres de arrefecimento industriais, agentes bacterianos com características mais desenvolvidas para elevada sobrevivência e uma rara combinação de condições climáticas, contribuíram para o segundo maior surto de doença dos Legionários registado na literatura.

Background We describe the investigation and control of an outbreak of Legionnaires' disease in Portugal in October, November and December 2014. Methods Confirmed cases were individuals with pneumonia, laboratory evidence of Legionella pneumophila serogroup 1 and exposure, by residence, occupational or leisure to the affected municipalities. 49 possible sources were reduced to four potential sources, all industries with wet cooling system, following risk assessment. We geo-referenced cases' residences and the location of cooling towers defining four study areas 10 km buffer centered on each cooling tower system. We compared the number of cases with expected numbers, calculated from the outbreak's attack rates applied to 2011 census population. Using Stones' Test, we tested observed to expected ratios for decline in risk, with distance up to 10 km four directions. Isolates of Legionella pneumophila were compared using molecular methods. Results We identified 403 cases, 377 of which were confirmed, 14 patients died. Patients became ill between 14 October and 2 December. A NE wind and thermal inversion were recorded during the estimated period of exposure. Disease risk was highest in people living south west from all of the industries identified and decreased with distance (p < 0.001). 71 clinical isolates demonstrated an identical SBT profile to an isolate from a cooling tower. Whole genome sequencing identified an unusual L. pneumophila subsp. fraseri serogroup 1 as the outbreak causative strain, and confirmed isolates' relatedness. Conclusions Industrial wet cooling systems, bacteria with enhanced survival characteristics and a combination of climatic conditions contributed to the second largest outbreak of Legionnaires' disease recorded internationally.

https://doi.org/10.1016/j.rpsp.2016.10.001 1340 downloads

Um novo modelo de carcinogénese para cancro do ovário: implicações clínicas da salpingectomia profiláctica
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Ferreira, Ana Filipa Rodrigues

; Carvalho, Maria João

; Rebelo, Teresa

; Falcão, Francisco

; Torgal, Isabel

Acta Obstétrica e Ginecológica Portuguesa

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Mar 2016, Volume 10 Nº 1 Páginas 50 - 60

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Ovarian cancer is the most lethal gynaecological malignancy. There is limited knowledge regarding this cancer and we are witnessing a paradigm shift, in which the Fallopian tube is considered the primary site of most high-grade serous carcinoma (HGSC). The aim of this article is to review the current body of knowledge of the origin and pathogenesis of ovarian cancer and the clinical implications of the new model of carcinogenesis. During more than 30 years, the prevailing view on the origin of HGSC was that it derived from the ovary, since the ovarian surface epithelium is exposed to inflammation and oxidative stress induced by ovulation. The incessant ovulation hypothesis was proposed by Fathalla in 1971. At the beginning of this century, many studies were published demonstrating the presence of invasive and non-invasive carcinoma in the fallopian tubes of prophylactic salpingo-oophorectomies performed in carriers of BRCA mutation, which led some authors to suggest the fallopian tube as the origin of these tumors. This theory was published in 2007, by Kindelberger, who described the precursor lesion - serous tubal intraepithelial carcinoma (STIC). The advances in cellular and molecular biology and in genetics added support for this new concept, indicating that the HGSC develops from an occult intraephitelial carcinoma in the fimbria of the fallopian tube and involves the ovary secondarily. Observational epidemiologic evidence strongly supports that tubal ligation and hysterectomy are associated with a decrease in the risk of ovarian cancer, by approximately 26-34%. The additional bilateral salpingectomy to hysterectomy does not affect ovarian function, and has no significant differences in rate of complications and operative time. Considering the new insights into the origin of HGSC, in which the majority is of tubal origin, there is a significant preventive potential by performing prophylactic salpingectomy.

2886 downloads

10.

Simultaneous Determination of Herbicides in Rice by QuEChERS and LC-MS/MS Using Matrix-Matched Calibration
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Rebelo, Andrey M.

; Dolzan, Maressa D.

; Heller, Melina

; Deschamps, Francisco C.

; Abate, Gilberto

; Micke, Gustavo A.

; Grassi, Marco T.

Journal of the Brazilian Chemical Society

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Jan 2016, Volume 27 Nº 1 Páginas 186 - 193

Resumo: En | Texto: En | PDF: En

The main objective of the present work was to validate a chromatographic method to determine herbicides commonly applied in the irrigated rice farming. For this, matrix-matched calibration was employed along with the extraction and clean-up of the samples by quick, easy, cheap, effective, rugged and safe (QuEChERS) method and determination of the analytes by high performance liquid chromatography tandem mass spectrometry (LC-MS/MS) with electrospray ionization in the positive mode. By this method, it was possible to achieve the ionization and detection of a total of 18 herbicides, with quantification of 12 of them. The method presented adequate precision and accuracy according to the European Commission and the International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH) guidelines for analytes in low concentrations. The limits of quantification ranged from 0.015 μg g-1 for oxadiazon to 0.165 μg g-1 for imazapyr. The method showed good linearity with R2> 0.99 and recovery values from 92 to 103%. The proposed protocol is adequate for monitoring bispyribac-sodium, cyclosulfamuron, cycloxydim, clomazone, ethoxysulfuron, fenoxaprop-p-ethyl, imazapic, imazapyr, imazethapyr, metsulfuron-methyl, oxadiazon and thiobencarb in rice grains in concentrations up to 109 times lower than the maximum residue limits established by the Brazilian Health Surveillance Agency (ANVISA) for these compounds in rice samples.

https://doi.org/10.5935/0103-5053.20150269 92491 downloads

11.

A comparative study: use of a Brain-computer Interface (BCI) device by people with cerebral palsy in interaction with computers
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Heidrich, Regina O.

; Jensen, Emely

; Rebelo, Francisco

; Oliveira, Tiago

Anais da Academia Brasileira de Ciências

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Dez 2015, Volume 87 Nº 4 Páginas 1929 - 1937

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Este artigo apresenta um estudo comparativo entre pessoas com paralisia cerebral e pessoas comuns, de diferentes idades, utilizando um equipamento de Brain-computer Interface (BCI). A pesquisa é de abordagem qualitativa. Trabalhou-se com Estudo de Casos Obser vacionais. Foram avaliadas pessoas com paralisia cerebral e pessoas comuns em Portugal e no Brasil. O objetivo foi desenvolver um estudo para avaliação de um produto, no intuito de perceber se pessoas com paralisia cerebral podem interagir com o computador e comparar se o desempenho destas pessoas é semelhante ao desempenho de pessoas comuns ao utilizarem o interface cérebro-computador. Ao final, constatou-se que não há diferenças significativas entre pessoas com paralisia cerebral entre os dois países e também entre as populações sem paralisia cerebral (pessoas comuns).

ABSTRACT This article presents a comparative study among people with cerebral palsy and healthy controls, of various ages, using a Brain-computer Interface (BCI) device. The research is qualitative in its approach. Researchers worked with Observational Case Studies. People with cerebral palsy and healthy controls were evaluated in Portugal and in Brazil. The study aimed to develop a study for product evaluation in order to perceive whether people with cerebral palsy could interact with the computer and compare whether their performance is similar to that of healthy controls when using the Brain-computer Interface. Ultimately, it was found that there are no significant differences between people with cerebral palsy in the two countries, as well as between populations without cerebral palsy (healthy controls).

https://doi.org/10.1590/0001-3765201520130413 39484 downloads

12.

Learning culture and knowledge management processes: to what extent are they effectively related?
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Schmitz, Susana

; Rebelo, Teresa

; Gracia, Francisco J.

; Tomás, Inés

Revista de Psicología del Trabajo y de las Organizaciones

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Dez 2014, Volume 30 Nº 3 Páginas 113 - 121

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

In the contemporary context of high competitiveness between organizations, organizational learning culture and knowledge management (KM) have been considered key concepts in both academic and managerial settings. This study aims to provide empirical support for the relationship between organizational learning culture and knowledge management, specifically concerning the prediction of learning culture on KM processes. Data collection was carried out through questionnaires in 50 Portuguese manufacturing firms. Data was analyzed at the organizational level using standard multiple regressions. The results showed a significant and positive relationship between learning culture and KM practices. Concerning the two dimensions of learning culture, internal integration was the main predictor for KM formal practices, KM informal practices and strategic management of knowledge, whereas the external adaptation dimension was shown to predict only the strategic management of knowledge. The present study contributes to theoretical and empirical findings concerning the relationship between learning culture and knowledge management processes.

En el contexto actual de alta competencia entre organizaciones, la cultura de aprendizaje organizacional y la gestión del conocimiento (GC) se consideran clave tanto en entornos académicos como directivos. Este estudio pretende proporcionar apoyo empírico para la relación entre la cultura de aprendizaje organizacional y la gestión del conocimiento, y más concretamente sobre el grado en que la cultura de aprendizaje es capaz de predecir los procesos de GC. La recogida de datos se realizó mediante cuestionarios en 50 empresas portuguesas de producción. Los datos fueron analizados al nivel organizacional usando regresiones múltiples. Los resultados mostraron una relación positiva y significativa entre la cultura de aprendizaje y las prácticas de GC. Con respecto a las dos dimensiones de la cultura de aprendizaje, la integración interna fue el principal predictor de las prácticas formales de GC, de las prácticas informales de GC y de la gestión estratégica del conocimiento, mientras que la adaptación externa fue capaz de predecir sólo la gestión estratégica del conocimiento. El presente estudio contribuye a hallazgos teóricos y empíricos relativos a la relación entre la cultura de aprendizaje y los procesos de gestión del conocimiento.

https://doi.org/10.1016/j.rpto.2014.11.003 465 downloads

13.

Spatial dynamics of urban populations of Lutzomyia longipalpis (Diptera: Psychodidae) in Caxias, State of Maranhão, Brazil
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Nascimento, Maria do Desterro Soares Brandao

; Silva, Maria Helena

; Viana, Graca Maria de Castro

; Leonardo, Francisco Santos

; Bezerra, Geusa Felipa de Barros

; Guimaraes e Silva, Antonia Suely

; Soares, Valeria Cristina Pinheiro

; Pereira, Silma Regina Ferreira

; Rebelo, Jose Manuel Macario

; Brazil, Reginaldo Pecanha

Revista da Sociedade Brasileira de Medicina Tropical

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Set 2013, Volume 46 Nº 5 Páginas 555 - 559

Resumo: En | Texto: En | PDF: En

Introduction In this paper, we report the ecology of Lutzomyia longipalpis in Caxias City, located in the eastern part of State of Maranhão, Brazil and highlight its seasonal and geographical distribution by environment. In addition, we discuss natural Leishmania infection and its relationship with visceral leishmaniasis. Methods Between September 2007 and August 2009, the collection of sandflies was performed using Center for Disease Control (CDC) light traps from 15 houses in 5 selected neighborhoods. Results Lutzomyia longipalpis was present in all zones of the city. We also found that Lu. longipalpis was regularly detected both inside and around the house, predominantly in outdoor areas. In urban areas, Lu. longipalpis was present in both the dry and rainy seasons, with a higher density present in the latter. One female specimen of Lu. longipalpis was observed to have natural Leishmania infection. Conclusions The presence of Lu. longipalpis was observed throughout the year during 2 seasonal periods, with a predominance in the rainy season. A low rate of natural Leishmania infection was observed in urban areas during the rainy season.

https://doi.org/10.1590/0037-8682-0150-2013 1984 downloads

14.

Fratura do snowboarder
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Serrano, Pedro

; Mercier, Francisco

; Rebelo, Edgar

; Pina, Carlos

; Mariano, João

Revista Portuguesa de Ortopedia e Traumatologia

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Dez 2012, Volume 20 Nº 4 Páginas 491 - 497

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

A fratura do processo lateral do talus (PLT) é rara e confunde-se com a clínica do entorse lateral do tornozelo. Por ser frequente entre snowboarders é conhecida como a “fratura do snowboarder”. O tratamento cirúrgico tem revelado melhores resultados nesta patologia que não sendo diagnosticada, ou com tratamento tardio, conduz a morbilidade prolongada. Os autores apresentam um caso de fratura do PLT na sequência de atropelamento. Após tratamento cirúrgico o doente retomou a função completa da articulação subtalar prévia ao acidente. Este caso clínico demonstra que o mecanismo de lesão não é exclusivo do snowboard. O índice de suspeição elevado para o diagnóstico e o tratamento adequado é fulcral para a obtenção de bons resultados funcionais.

Fracture of the lateral process of the talus is rare and may be confused with lateral ankle sprain. Because this injury is frequent among snowboarders it is known as “snowboarder´s fracture”. Operative treatment has revealed better results of an injury when not diagnosed or late treated can produce lasting morbidity. The authors present a case report after a running over. With surgery the patient has recovered total function of the subtalar joint. The present case shows that the mechanism responsible for this fracture isn´t exclusive of snowboard. An high level of suspicion is necessary for a precocious diagnosis and proper treatment it´s central for good outcomes.

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15.

Insecticidal activity of three species of Guatteria (Annonaceae) against Aedes aegypti (Diptera: Culicidae)
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ACIOLE, SULLAMY D. G.

; PICCOLI, CARLA F.

; DUQUE L., JONNY E.

; COSTA, EMMANOEL V.

; NAVARRO-SILVA, MARIO A.

; MARQUES, FRANCISCO A.

; SALES MAIA, BEATRIZ H. L. N.

; PINHEIRO, MARIA LÚCIA B.

; REBELO, MARIA T.

Revista Colombiana de Entomología

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Dez 2011, Volume 37 Nº 2 Páginas 262 - 268

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Se evalúan productos de origen vegetal en busca de sustancias bioactivas que tengan la capacidad de reducir la dependencia de insecticidas organofosforados y piretroides, a los que las poblaciones de insectos se han vuelto resistentes. Por esta razón el objetivo de este estudio fue evaluar si los aceites esenciales de Guatteria hispida, G. blepharophylla y G. friesiana presentan efecto insecticida contra A. aegypti bajo condiciones de laboratorio. Los aceites esenciales se extrajeron a través de hidrodestilación por medio de un aparato tipo Clevenger, analizados por Cromatografía Gaseosa acoplada a Espectrometría de Masas (CG-EM) y Resonancia Magnética Nuclear (RMN). Los bioensa-yos se analizaron de acuerdo con el modelo Probit. Los análisis de (CG-EM) y (RMN) confrmaron que las hojas de G. blepharophylla presentan óxido de cariofileno como el principal componente; en G. friesiana fue a-, b- y g-eudesmol, y en G. hispida a- y b-pineno y (E)-cariofileno fueron los compuestos predominantes. La concentraciones letales CL50, CL95 y CL99 fueron respectivamente 85,74, 199,35 y 282,76ppm para G. hispida; 58.72, 107.6 y 138.37 ppm para G. blepharophylla; 52,6, 94,37 y 120,22ppm para G. friesiana. El aceite extraído de G. friesiana presentó el mejor efecto insecticida.

the products of vegetal origin were assessed for bioactive substances to reduce reliance on organophosphate and pyrethroid insecticides, to which insect populations have become resistant. For this reason the aim of this study was to assess whether the essential oils of Guatteria hispida, G. blepharophylla and G. friesiana have insecticidal effect against A. aegypti under laboratory conditions. Essential oils were extracted through hydrodistillation using a modifed Clevenger apparatus and analyzed by Gas Chromatography (CG-FID), Gas Chromatography coupled to Mass Spec-trometry (GC-MS), and Nuclear Magnetic Resonance (NMR). the bioassays were analyzed according to the Probit model. The GC-MS and NMR analyses confrmed that the leaves of G. blepharophylla have the caryophyllene oxide as their main component; in G. friesiana the a-,b- and g-eudesmols prevail, and in G. hispida a- and b-pinene, and (E)-caryophyllene are the predominant compounds. the lethal concentrations LC50, LC95 and LC99, were respectively 85.74, 199.35 and 282.76ppm for G. hispida; 58.72, 107.6 and 138.37ppm for G. blepharophylla; and 52.6, 94.37 and 120.22ppm for G. friesiana. the oil extracted from G. friesiana presented the best insecticidal effect.

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