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au:MASCARENHAS, SERGIO

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Instrumentos para la evaluación del riesgo de lesiones por presión en adultos en estado crítico: scoping review
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Picoito, Ricardo Jorge de Barros Romeira

; Lapuente, Sara Maria May Pereira da Cruz

; Ramos, Alexandra Catarina Parreira

; Rabiais, Isabel Cristina Mascarenhas

; Deodato, Sérgio Joaquim

; Nunes, Elisabete Maria Garcia Teles

Revista Latino-Americana de Enfermagem

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dec 2023, Volume 31 elocation e3983

Abstract: En Es Pt | Text: En Es Pt | PDF: En | PDF: Es | PDF: Pt

Objective: to map the instruments for risk assessment of pressure ulcers in adults in critical situation in intensive care units; identify performance indicators of the instrument, and the appreciation of users regarding the instruments’ use/limitations. Method: a scoping review. We used the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews in the writing of the study. We carried out the searches in the EBSCOhost search tool for 8 databases, resulting in 1846 studies, of which 22 studies compose the sample. Results: we identified two big instrument groups: generalist [Braden, Braden (ALB), Emina, Norton-MI, RAPS, and Waterlow]; and specific (CALCULATE, Cubbin & Jackson, EVARUCI, RAPS-ICU, Song & Choi, Suriaidi and Sanada, and COMHON index). Regarding the predictive value, EVARUCI and CALCULATE presented better results for performance indicators. Concerning appreciation/limitations indicated by users, we highlight the CALCULATE scale, followed by EVARUCI and RAPS-ICU, although they still need future adjustments. Conclusion: the mapping of the literature showed that the evidence is sufficient to indicate one or more instruments for the risk assessment of pressure ulcers for adults in critical situation in intensive care units.

Objetivo: mapear los instrumentos para la evaluación del riesgo de lesiones por presión en adultos en situación crítica en una unidad de terapia intensiva; identificar los indicadores de desempeño de los instrumentos y la apreciación de los usuarios con respecto al uso/limitaciones de los instrumentos. Método: scoping review. Para redactar el estudio se utilizó la extensión Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews. La investigación se realizó mediante la herramienta de búsqueda EBSCOhost en 8 bases de datos, resultando 1846 estudios, de los cuales 22 conforman la muestra. Resultados: se identificaron dos grandes grupos de instrumentos: los generalistas [Braden, Braden (ALB), Emina, Norton-MI, RAPS y Waterlow]; y los específicos (CALCULATE, Cubbin & Jackson, EVARUCI, RAPS-ICU, Song & Choi, Suriaidi y Sanada y el índice COMHON). En cuanto al valor predictivo, EVARUCI y CALCULATE mostraron los mejores resultados de indicadores de desempeño. En cuanto a las apreciaciones/limitaciones señaladas por los usuarios, destaca la escala CALCULATE, seguida de la EVARUCI y la RAPS-ICU, aunque aún necesitan ajustes futuros. Conclusión: el mapeo mostró que las evidencias son suficientes para indicar uno o más instrumentos para la evaluación del riesgo de lesiones por presión en adultos críticos en una unidad de cuidados intensivos.

Objetivo: mapear os instrumentos para avaliação do risco de lesões por pressão nos adultos em situação crítica em unidade de cuidados intensivos; identificar os indicadores de desempenho dos instrumentos e a apreciação dos utilizadores quanto ao uso/às limitações dos instrumentos. Método: scoping review. O Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews foi utilizado para a redação do estudo. A pesquisa foi realizada na ferramenta de busca EBSCOhost em oito bases de dados, resultando em 1846 estudos, dos quais 22 compõem a amostra. Resultados: identificaram-se dois grandes grupos de instrumentos: os genéricos [Braden, Braden (ALB), Emina, Norton-MI, RAPS e Waterlow]; e os específicos (CALCULATE, Cubbin & Jackson, EVARUCI, RAPS-ICU, Song & Choi, Suriaidi e Sanada e o índice de COMHON). Quanto ao valor preditivo, a EVARUCI e a CALCULATE apresentaram os melhores resultados de indicadores de desempenho. Em relação à apreciação/às limitações apontadas pelos utilizadores, destacam-se a escala CALCULATE, seguindo-se da EVARUCI e da RAPS-ICU, embora ainda necessitem de ajustes futuros. Conclusão: o mapeamento mostrou que as evidências são suficientes para indicar um ou mais instrumentos para avaliação do risco de lesões por pressão nos adultos em situação crítica em unidade de cuidados intensivos.

https://doi.org/10.1590/1518-8345.6659.3983

Tree species used in urban forestry in Brazil: a scientometric review
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Vidal-Couto, Daniela Baldez

; Brito, Carolina Reis de

; Andrade, Isis Leite Medeiros Mascarenhas

; Cerqueira, Amanda Freitas

; Reis, Igor Pires

; Tomasini, Sergio Luiz Valente

; Dalmolin, Ândrea Carla

; Mielke, Marcelo Schramm

Rodriguésia

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2023, Volume 74 elocation e01162022

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract We conducted a scientometric review based on urban floristic inventories published in Brazilian scientific journals between 2000 and 2020 to determine the diversity and conservation status of trees used in urban forestry in Brazil. The floristic inventories were divided according to five Brazilian geographic regions. Tree species were divided into native and exotic species. We identified 71 floristic inventories of urban forestry, most of which were concentrated in the South and Southeast regions. In total, 473 species and 125 botanical families were identified. The largest number of species and families was found in the Southeast region, but most species/inventories were found in the North and Central-West regions. The ratio of native to exotic tree species was approximately 1:1; however, when the five most commonly used species were analyzed, the ratio of native to exotic species was less than 0.6, regardless of the geographic region. Regarding vulnerability, most of the species included in this study were not assessed for threat (86%), whereas only 1.7% of the species were vulnerable and 1% were endangered. We emphasize the urgent need to increase the number of tree species included in the IUCN Red List Categories and Criteria in urban forestry programs in Brazil.

Resumo Realizamos uma revisão cienciométrica baseada em inventários florísticos urbanos publicados em revistas científicas brasileiras entre 2000 e 2020 visando determinar a diversidade e o estado de conservação de árvores utilizadas na arborização urbana no Brasil. Os inventários florísticos foram divididos de acordo com cinco regiões geográficas brasileiras. As espécies arbóreas foram divididas em nativas e exóticas. Identificamos 71 inventários florísticos de arborização urbana, a maioria concentrada nas regiões Sul e Sudeste. No total, foram identificadas 473 espécies e 125 famílias botânicas. O maior número de espécies e famílias foi encontrado na região Sudeste, mas a maioria das espécies/inventários foi encontrada nas regiões Norte e Centro-Oeste. A proporção de espécies arbóreas nativas e exóticas foi de aproximadamente 1:1; no entanto, quando analisadas as cinco espécies mais utilizadas, a proporção de espécies nativas para exóticas foi inferior a 0,6, independentemente da região geográfica. Em relação à vulnerabilidade, a maioria das espécies incluídas neste estudo não foram avaliadas como ameaçadas (86%), enquanto apenas 1,7% das espécies estavam vulneráveis e 1% estavam ameaçadas. Enfatizamos a necessidade urgente de aumentar o número de espécies arbóreas incluídas nas categorias e critérios da Lista Vermelha da IUCN em programas de arborização urbana no Brasil.

https://doi.org/10.1590/2175-7860202374047

Relationship between dialysis quality and brain compliance in patients with end-stage renal disease (ESRD): a cross-sectional study
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Rickli, Cristiane

; Kalva, Danielle Cristyane

; Frigieri, Gustavo Henrique

; Schuinski, Adriana Fatima Menegat

; Mascarenhas, Sérgio

; Vellosa, José Carlos Rebuglio

Sao Paulo Medical Journal

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jun 2022, Volume 140 N. 3 Pages 398 - 405

Abstract: En | Text: En | PDF: En

ABSTRACT BACKGROUND: The high number of patients with end-stage kidney disease (ESRD) on hemodialysis makes it necessary to conduct studies aimed at improving their quality of life. OBJECTIVES: To evaluate brain compliance, using the Brain4care method for intracranial pressure (ICP) monitoring, among patients with ESRD before and at the end of the hemodialysis session, and to correlate ICP with the dialysis quality index (Kt/V). DESIGN AND SETTING: Cross-sectional study conducted at a renal replacement therapy center in Brazil. METHODS: Sixty volunteers who were undergoing hemodialysis three times a week were included in this study. Brain compliance was assessed before and after hemodialysis using the noninvasive Brain4care method and intracranial pressure wave morphology was analyzed. RESULTS: Among these 60 ESRD volunteers, 17 (28%) presented altered brain compliance before hemodialysis. After hemodialysis, 12 (20%) exhibited normalization of brain compliance. Moreover, 10 (83%) of the 12 patients whose post-dialysis brain compliance became normalized were seen to present good-quality dialysis, as confirmed by Kt/V > 1.2. CONCLUSIONS: It can be suggested that changes to cerebral compliance in individuals with ESRD occur frequently and that a good-quality hemodialysis session (Kt/V > 1.2) may be effective for normalizing the patient’s cerebral compliance.

https://doi.org/10.1590/1516-3180.2021.0117.r1.14092021

Esperança e Bem-Estar Psicológico durante a Crise Sanitária pela COVID-19: Estudo com Estudantes de Enfermagem
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Lourenço, Tânia Marlene Gonçalves

; Charepe, Zaida Borges

; Pestana, Cristina Bárbara da Costa Freitas

; Rabiais, Isabel Cristina Mascarenhas

; Alvarez, Enrique Jesús Sáez

; Figueiredo, Rita Maria Sousa Abreu

; Fernandes, Sérgio Joaquim Deodato

Escola Anna Nery

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2021, Volume 25 N. spe elocation e20200548

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Resumo Objetivo analisar as relações entre a esperança e o bem-estar psicológico de estudantes de enfermagem portugueses durante a crise pandêmica pela COVID-19. Método estudo descritivo-correlacional, com recurso a questionário online para coleta de dados. Participaram 705 estudantes de enfermagem com idade média de 21,74 anos (DP=4,44). Os instrumentos de coleta de dados utilizados foram a Escala de Esperança de Herth (HHI-PT) e a Escala de Medida de Manifestação de Bem-Estar Psicológico (EMMBEP). Foi utilizada a estatística descritiva e inferencial. Resultados na HHI-PT, o domínio afectivo-comportamental obteve a pontuação média mais alta, 3,30 (DP=0,45); no EMMBEP, foi o domínio sociabilidade, 3,64 (DP=0,77). Havia correlações moderadas a fortes (0,383 <r <0,917) entre o global e todos os domínios da esperança e bem-estar psicológico (≤0.001). Conclusão e implicações para a prática a esperança e o bem-estar psicológico dos estudantes de enfermagem durante a pandemia são variáveis correlacionados positivamente entre si. As medidas de promoção da saúde mental, a implementar pelas instituições de ensino, devem ter em consideração a associação entre essas duas variáveis.

Abstract Aim to analyze the relationship between hope and the psychological well-being of Portuguese nursing students during the COVID-19 pandemic crisis. Method this is a descriptive-correlational study using an online questionnaire for data collection. 705 nursing students participated, with a mean age of 21.74 years (SD=4.44). The data collection instruments used were the Herth Hope Index (HHI-PT) and the Well-Being Manifestations Measure Scale (WBMMS). Descriptive and inferential statistics were used. Results in the HHI-PT, the affective-behavioral domain had the highest mean score (3.30; SD=0.45), while in the WBMMS, it was the sociability domain, 3.64 (SD=0.77). There were moderate to strong correlations (0.383 <r <0.917) between the global and all domains of hope and psychological well-being (≤0.001). Conclusion and implications for practice nursing students’ hope and psychological well-being during the pandemic are variables that are positively correlated with each other. Strategies to promote mental health, to be implemented by educational institutions, must consider the association between these two variables.

Resumen Objetivo analizar la relación entre la esperanza y el bienestar psicológico de los estudiantes portugueses de enfermería durante la crisis pandémica por COVID-19. Método estudio descriptivo-correlacional mediante cuestionario online para la recogida de datos. Participaron 705 estudiantes de enfermería, con una edad promedio de 21,74 años (DE=4,44). Los instrumentos de recolección de datos utilizados fueron la Escala de Esperanza de Herth (HHI-PT) y la Escala de Medida de Manifestación de Bienestar Psicológico (EMMBEP). Se utilizó estadística descriptiva e inferencial. Resultados en HHI-PT, fue el dominio afectivo-conductual el que obtuvo la puntuación promedio más alta, 3.30 (DE=0.45), en EMMBEP, fue el dominio de sociabilidad, 3.64 (DE=0.77). Hubo correlaciones de moderadas a fuertes (0.383 <r <0.917) entre el dominio global y todos los dominios de la esperanza y el bienestar psicológico (≤0.001). Conclusión e implicaciones para la práctica la esperanza y el bienestar psicológico de los estudiantes de enfermería durante la pandemia son variables que se correlacionan positivamente entre sí. Las medidas de promoción de la salud mental, a ser implementadas por las instituciones educativas, deben tener en cuenta la asociación entre estas dos variables.

https://doi.org/10.1590/2177-9465-ean-2020-0548 247 downloads

Freshwater fishes of the Bahia State, Northeastern Brazil
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Silva, André Teixeira

; Chagas, Ricardo Jucá

; Santos, Alexandre Clistenes de Alcântara

; Zanata, Angela Maria

; Rodrigues, Beatriz Kawamura

; Polaz, Carla Natacha Marcolino

; Alves, Carlos Bernardo Mascarenhas

; Vieira, Cristiana Souza

; Souza, Fabiane Barreto

; Vieira, Fábio

; Sampaio, Francisco Alexandre Costa

; Ferreira, Harildon

; Alves, Hilda Susele Rodrigues

; Sarmento-Soares, Luisa Maria

; Pinho, Marianna

; Martins-Pinheiro, Ronaldo Fernando

; Lima, Sergio Maia Queiroz

; Campiolo, Sofia

; Camelier, Priscila

Biota Neotropica

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2020, Volume 20 N. 4 elocation e20200969

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: Este trabalho foi realizado a partir da avaliação do estado de conservação da ictiofauna de água doce do Estado da Bahia. Os dados de inventário e distribuição das espécies foram obtidos a partir da literatura científica especializada e de coleções ictiológicas representativas. Um total de 281 espécies nativas foi registrado no Estado da Bahia, distribuídas nas ecorregiões de água doce Mata Atlântica Nordeste (NMA) e São Francisco (SFR). A riqueza de espécies foi maior na NMA (187 spp.), composta por diversas bacias costeiras, do que na SFR (134 spp.), composta pela bacia do rio São Francisco. Das 30 famílias registradas, as mais representativas foram Characidae e Rivulidae, com 53 e 48 espécies, respectivamente. O estado de conservação de 214 espécies foi avaliado e 33 (15%) destas foram classificadas em alguma categoria de ameaça da IUCN. Destas, 11 foram classificadas como vulneráveis (VU), 12 em perigo (EN) e 10 criticamente em perigo (CR). A maioria das espécies ameaçadas (n = 14) pertence à família Rivulidae. O elevado número de espécies ameaçadas na NMA: (n = 23) está associado ao alto endemismo das espécies com distribuição restrita e aos impactos da ocupação humana ao longo da região costeira. Na SFR, a maioria das espécies ameaçadas é de peixes anuais, que estão localmente desaparecendo devido à degradação crescente de seus habitats temporários.

Abstract: This work was carried out from the assessment of the conservation status of the freshwater ichthyofauna from Bahia State. The inventory data and species distribution were obtained from the specialized scientific literature and representative ichthyological collections. A total of 281 native species was recorded in Bahia State, distributed in the Northeastern Mata Atlantica (NMA) and São Francisco (SFR) freshwater ecoregions. There was a larger number of species in the NMA (187 spp.), composed by several coastal basins, than in the SFR (134 spp.), composed by São Francisco river basin. Among the 30 families recorded, Characidae and Rivulidae were the most representative, with 53 and 48 species, respectively. The conservation status of 214 species was assessed and 33 of them (15%) were included in the IUCN threat categories. Of these, 11 species were classified as vulnerable (VU), 12 as endangered (EN), and 10 as critically endangered (CR). Most threatened species (n = 14) belongs to the family Rivulidae. The larger number of threatened species in the NMA: (n = 23) is mainly related to the high endemism of restricted-range species associated with the human occupation impacts along the coastal regions. In the SFR, most of threatened species are annual killifishes, which are locally disappearing due to increasing degradation of their temporary habitats.

https://doi.org/10.1590/1676-0611-bn-2020-0969 1667 downloads

Exploring tRNA gene cluster in archaea
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Morgado, Sergio Mascarenhas

; Vicente, Ana Carolina Paulo

Memórias do Instituto Oswaldo Cruz

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2019, Volume 114 elocation e180348

Abstract: En | Text: En | PDF: En

BACKGROUND Shared traits between prokaryotes and eukaryotes are helpful in the understanding of the tree of life evolution. In bacteria and eukaryotes, it has been shown a particular organisation of tRNA genes as clusters, but this trait has not been explored in the archaea domain. OBJECTIVE Explore the occurrence of tRNA gene clusters in archaea. METHODS In-silico analyses of complete and draft archaeal genomes based on tRNA gene isotype and synteny, tRNA gene cluster content and mobilome elements. FINDINGS We demonstrated the prevalence of tRNA gene clusters in archaea. tRNA gene clusters, composed of archaeal-type tRNAs, were identified in two Archaea class, Halobacteria and Methanobacteria from Euryarchaeota supergroup. Genomic analyses also revealed evidence of the association between tRNA gene clusters to mobile genetic elements and intra-domain horizontal gene transfer. MAIN CONCLUSIONS tRNA gene cluster occurs in the three domains of life, suggesting a role of this type of tRNA gene organisation in the biology of the living organisms.

https://doi.org/10.1590/0074-02760180348 1206 downloads

Mycobacterium genus and tRNA arrays
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Morgado, Sergio Mascarenhas

; Vicente, Ana Carolina Paulo

Memórias do Instituto Oswaldo Cruz

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2019, Volume 114 elocation e180443

Abstract: En | Text: En | PDF: En

The presence of tRNA array, a region with high tRNA gene number and density, has been demonstrated in Mycobacterium genus. However, a recent phylogenomic study revealed the existence of five distinct monophyletic groups (genera) within this genus. Considering this new scenario, and based on in-silico analyses, we have identified and characterised the abundance and diversity of tRNA array units within Mycobacterium, Mycolicibacterium gen. nov., Mycolicibacillus gen. nov., and Mycobacteroides gen. nov. The occurrence and prevalence of tRNA arrays among the genera belonging to Actinobacteria indicate their possible role in the organismal fitness.

https://doi.org/10.1590/0074-02760180443 1102 downloads

Engenharia de sistemas complexos
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Piqueira, José Roberto Castilho

; Oliveira, Sérgio Mascarenhas de

Estudos Avançados

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dec 2017, Volume 31 N. 91 Pages 249 - 255

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: Este artigo apresenta uma proposta de abordagem dos sistemas complexos considerando sua engenharia e definindo medidas cujas evoluções temporais proporcionam indicativos de necessidade de ações preventivas nas fases de projeto, execução e operação de grandes obras.

Abstract: This paper proposes an approach to complex systems considered as engineering works, and defines measures whose temporal evolutions give hints of the need for preventive actions in the design, execution and operation of big systems

https://doi.org/10.1590/s0103-40142017.3191018 2448 downloads

Complete plasmid sequence carrying type IV-like and type VII secretion systems from an atypical mycobacteria strain
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Morgado, Sergio Mascarenhas

; Marín, Michel Abanto

; Freitas, Fernanda S

; Fonseca, Erica Lourenço

; Vicente, Ana Carolina Paulo

Memórias do Instituto Oswaldo Cruz

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jul 2017, Volume 112 N. 7 Pages 514 - 516

Abstract: En | Text: En | PDF: En

The genus Mycobacterium is highly diverse and ubiquitous in nature, comprehending fast- and slow-growing species with distinct impact in public health. The plasmid-mediated horizontal gene transfer represents one of the major events in bacteria evolution. Here, we report the complete sequence of a 160,489 bp circular plasmid (pCBMA213_2) from an atypical and fast-growing environmental mycobacteria. This is a unique plasmid, in comparison with the characterised mycobacteria plasmids, harboring a type IV-like and ESX-P2 type VII secretion systems. pCBMA213_2 can be further explored for evolutionary and conjugation studies as well as a tool to manipulate DNA within this bacteria genus.

https://doi.org/10.1590/0074-02760160546 911 downloads

10.

Morphological characteristics, muscle strength, and anaerobic power performance of wheelchair basketball players
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Ferreira, Sandra Aires

; Souza, William Cordeiro de

; Nascimento, Matheus Amarante do

; Tartaruga, Marcus Peikriszwili

; Portela, Bruno Sergio

; Mascarenhas, Luis Paulo Gomes

; Queiroga, Marcos Roberto

Revista Brasileira de Cineantropometria & Desempenho Humano

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jun 2017, Volume 19 N. 3 Pages 343 - 353

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O objetivo do estudo foi o de fornecer uma análise descritiva da estrutura morfológica, do desempenho de força e de potência anaeróbica de membros superiores de atletas de basquetebol em cadeira de rodas. Onze jogadores do sexo masculino (33,2 ± 10,6 anos; 71,8 ± 15,8 kg) foram submetidos a medidas antropométricas e a testes de dinamometria (kg), lançamento de medicine ball (m) e de wingate de braços (W). Os resultados revelaram altura tronco-cefálica (79,7 ± 4,6 cm), percentual de gordura (20,7 ± 7,6%), força de preensão manual e de lançamento (50,1 ± 10,6 kg e 3,9 ± 1,1 m, respectivamente), além de potência pico (316,8 ± 126,2 W), potência média (160,5 ± 76,5 W) e índice de fadiga (50,4%) inferiores ao desempenho de outros atletas de basquetebol em cadeira de rodas. As características morfológicas e desempenho dos atletas do presente estudo sugerem desvantagens quando são comparados a outros atletas de basquetebol em cadeira de rodas.

Abstract The aim of this study was to provide a descriptive analysis of the morphological structure, muscle strength, and anaerobic power performance of the upper limbs of wheelchair basketball athletes. Eleven male players (33.2 ± 10.6 years, 71.8 ± 15.8 kg) were submitted to anthropometric measurements and dynamometry (kg), medicine ball throwing (m) and wingate arm tests (W). The results showed sitting height (79.7 ± 4.6 cm), relative body fat (20.7 ± 7.6%), handgrip strength and explosive muscle strength (50.1 ± 10.6 kg and 3.9 ± 1.1 m, respectively), as well as peak power (316.8 ± 126.2 W), mean power (160.5 ± 76.5 W) and fatigue index (50.4%) lower than the performance of other wheelchair basketball athletes. The morphological characteristics and performance of athletes in the present study suggest disadvantages when compared to other wheelchair basketball athletes.

https://doi.org/10.5007/1980-0037.2017v19n3p343 1458 downloads

11.

Identificação de propriedades de fluxo do caulim e dimensionamento de tremonha de silo para fluxo mássico
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Mascarenhas, Fernando Pereira

; Mesquita, Alexandre Luiz Amarante

; Custódio Filho, Sérgio de Souza

; Mesquita, André Luiz Amarante

Matéria (Rio de Janeiro)

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2017, Volume 22 N. 4 elocation e-11892

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A transferência e armazenagem de caulim são etapas importantes para seu processo de beneficiamento. O projeto de um sistema para essas etapas necessita de um estudo detalhado do comportamento dinâmico do material granulado que se está utilizando. Problemas em silos podem ocorrer, em muitos casos, devido ao incorreto dimensionamento de sua geometria pela desconsideração das propriedades de fluxo do material granulado. Portanto, este trabalho se concentrou em analisar as propriedades de fluxo do caulim, com 4% de umidade, com o intuito de dimensionar uma tremonha cônica de um silo para fornecer um fluxo mássico (fluxo uniforme) ao material. Inicialmente, as propriedades de fluxo do caulim foram obtidas em laboratório. Em seguida, a partir da caracterização do caulim, o dimensionamento de uma tremonha cônica do silo foi realizado, por meio da teoria de Jenike, para determinação do ângulo de inclinação para fornecer o padrão de escoamento desejado. Em seguida, o diâmetro mínimo de descarga para evitar o arqueamento foi calculado por meio das teorias de Jenike e Enstad. Resultados experimentais de escoamento em silos de acrílico com tremonhas com diferentes configurações foram obtidos para validar os resultados teóricos. Os resultados dos ensaios experimentais apresentaram boa concordância com os resultados teóricos, os quais mostraram que o dimensionamento pela teoria de Jenike é mais conservador que a teoria de Enstad na determinação do diâmetro mínimo.

ABSTRACT The transfer and storage of kaolin are important steps for its beneficiation process. The design of a system for such purposes requires a detailed study of the dynamic behavior of granular material that is being used. Problems can occur in silos, in many cases, due to incorrect design by not considering the granulated material flow properties. Therefore, this work has focused on analyzing the kaolin flow properties for particular moisture content (4%) in order to design a conical hopper to provide a mass flow (uniform flow) pattern of the material. Initially, the kaolin flow properties were obtained from laboratory tests. Then, from the kaolin characterization, the design of a conical hopper was performed using Jenike theory in order to determine the angle that provides the desired flow pattern (mass flow). Next, the minimum discharge diameter to prevent flow obstruction (cohesive arching) was calculated by the theories of Jenike and Enstad. Experimental test results using acrylic silos with different configurations were obtained to validate the theoretical results. The results of experimental tests demonstrated good concordance with the theoretical results, which have shown that the design by Jenike theory is more conservative than the Enstad theory in determining the minimum diameter.

https://doi.org/10.1590/s1517-707620170004.0226 1167 downloads

12.

Ex vivo and simulator models teaching therapeutic ERCP and EUS: description of SOBED’s first course
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Artifon, Everson L.A

; Ramirez, Mauro E

; Ardengh, José C

; Sartor, Maria Cristina

; Favaro, Gabriel M

; Belmonte, Emilio

; Lobo, Julio

; Coelho, Djalma

; Pereira-Lima, Julio

; Lopez, Cesar V

; Matuguma, Sergio E

; Furuya Jr, Carlos K

; Pisani, Julio

; Cheng, Spencer

; Buch, Marco A.

; Franzini, Tomazo

; Vilela, Tiago F

; Pessoa, Ricardo

; Bonin, Eduardo

; Lera, Marcos

; Nakadomari, Thaisa S

; Kashiwagui, Leandro Y

; Gerber, Marlus T

; Mascarenhas, Ramiro

Revista de Gastroenterología del Perú

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jul 2016, Volume 36 N. 3 Pages 231 - 241

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Teaching models in endoscopy are important tools to minimize risks derived from endoscopic procedures, taking into account that therapeutic endoscopy, also known as surgical endoscopy, has greatly developed during the last decade. This results from the fact that minimally invasive procedures present relevant contributions and promote more comfort to patients. In this context, ex vivo teaching models and virtual simulators are important tools to the safe acquisition of abilities. In this article, the Brazilian Society of Digestive Endoscopy presents and describes its first course of therapeutic ERCP and EUS in models of laboratory teaching.

Los modelos de enseñanza en endoscopía son herramientas importantes para minimizar los riesgos de los procedimentos endoscópicos. En la última década la endoscopía terapéutica o también llamada endoscopía-quirúrgica, tuvo gran desarollo debido a que los procedimentos minimamente invasivos tienen mejores resultados para la calidad de vida del paciente. En este contexto, los modelos experimentales y animales son herramientas muy importantes para los alumnos. En este artículo de revisión y presentación, los miembros de la Sociedad Brasilera de Endoscopía Digestiva presentan el primer Curso Taller en Ecoendoscopía terapéutica y CPRE en el Congreso Nacional del 2015.

13.

Achados incidentais de aneurismas torácicos e abdominais
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Góes Junior, Adenauer Marinho de Oliveira

; Mascarenhas, Bárbara Íris

; Rodrigues, Sofia Cunha

; Andrade, Mariseth Carvalho de

; Franco, Reinaldo Sergio Monteiro

Jornal Vascular Brasileiro

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jun 2016, Volume 15 N. 2 Pages 106 - 112

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Contexto Os aneurismas de aorta abdominal (AAAs) são os mais comuns. A incidência anual de ruptura do AAA é de oito casos por 100.000 habitantes. A detecção incidental pode beneficiar o paciente, desde que o diâmetro seja monitorado e o paciente receba o tratamento adequado. Objetivos Estimar a prevalência do diagnóstico incidental de aneurisma de aorta torácica (AAT) e de AAA em tomografias computadorizadas (TCs); avaliar a prevalência de sexo e idade dos pacientes e determinar quais as artérias acometidas e as características morfológicas dos aneurismas; determinar quais as indicações de TC mais associadas ao diagnóstico incidental de aneurismas. Métodos Estudo descritivo, retrospectivo e randomizado. Critérios de inclusão: pacientes com 50 anos ou mais submetidos a TC de tórax, abdome ou pelve. Critérios de exclusão: acompanhamento ou suspeita diagnóstica de aneurismas. Foram utilizados protocolos com questões sobre dados demográficos e anatômicos. Resultados Foram analisados 1.202 laudos radiológicos. Detectados 27 aneurismas (prevalência de 2,2%). Pacientes: 60% do sexo masculino e 40% do sexo feminino (p < 0,05). Localização: 13 casos (48,2%) na aorta ascendente (AAT); 7 (25,9%) na aorta infrarrenal (AAA); 2 (7,4%) aorta na transição toracoabdominal (ATA); 2 (7,4%) na ilíaca comum; 1 (3,7%) na ilíaca interna; 1 (3,7%) na artéria esplênica; e 1 (3,7%) na artéria renal. Conclusões A maioria dos pacientes foi do sexo masculino (60%); houve maior frequência de AAT (diâmetro médio de 4,1 cm), seguido de AAA (diâmetro médio de 4,0 cm) e ATA (diâmetro médio de 3,9 cm). A principal indicação para a realização de TC associada ao diagnóstico incidental de aneurismas foi em função de sintomas respiratórios.

Abstract Background Abdominal aortic aneurysms (AAAs) are the most common. The annual incidence of AAA rupture is eight cases per 100,000 inhabitants. Incidental detection can benefit patients if diameter is monitored and the correct treatment provided. Objectives To estimate the prevalence of incidental diagnosis of thoracic aortic aneurysm (TAA) and AAA by computed tomography (CT); to determine prevalence by age and sex of patients and determine which arteries are involved and the morphological characteristics of the aneurysms; to determine the indications for CT most associated with incidental diagnosis of aneurysms. Methods This was a descriptive, retrospective and randomized study. Inclusion criteria: patients over 50 years of age examined with CT of the thorax, abdomen or pelvis. Exclusion criteria: follow-up or diagnostic suspicion of aneurysms. Data collection instruments containing questions covering demographic and anatomic data were used. Results A sample of 1,202 radiology reports was reviewed. A total of 27 aneurysms were detected (prevalence of 2.2%). Patients: 60% were male and 40% were female (p < 0.05). Sites: there were 13 cases (48.2%) in the ascending aorta (TAA); 7 (25.9%) in the infrarenal aorta (AAA); 2 (7.4%) at the thoracoabdominal transition of the aorta (TTA); 2 (7.4%) in the common iliac artery ; 1 (3.7%) in the internal iliac artery; 1 (3.7%) in the splenic artery; and 1 (3.7%) in the renal artery. Conclusions The majority of patients were male (60%); TAA was the most common type (mean diameter: 4.1 cm), followed by AAA (mean diameter: 4.0 cm) and ATA (mean diameter: 3.9 cm). The most common indication for the CT examination that led to incidental diagnosis of an aneurysm was respiratory symptoms.

https://doi.org/10.1590/1677-5449.007616 5687 downloads

14.

Aerobic exercise reduces anxiety symptoms and improves fitness in patients with panic disorder
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Lamego, Murilo Khede

; Lattari, Eduardo

; Sá Filho, Alberto Souza de

; Paes, Flávia

; Mascarenhas Jr., Jarbas

; Maranhão Neto, Geraldo

; Oliveira, Aldair José de

; Campos, Carlos

; Rocha, Nuno Barbosa F.

; Nardi, Antonio E.

; Machado, Sergio

MedicalExpress

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jun 2016, Volume 3 N. 3 elocation M160306

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

OBJETIVO: O objetivo deste estudo foi investigar os efeitos do exercício aeróbio praticado regularmente sobre a ansiedade e o VO2max em pacientes com transtorno de pânico. MÉTODO: Dez mulheres sedentárias diagnosticadas com transtorno de pânico (TP) realizaram 36 sessões de exercícios aeróbico contínuo (70 a 75% VO2max) em esteira, 3x por semana, durante 12 semanas. Uma avaliação cardiopulmonar (teste ergo-espirométrico) definiu a intensidade do treinamento, bem como estabeleceu valores de VO2max pré e pós-treinamento. A avaliação dos sintomas de ansiedade nos três momentos (controle, 6° e 12° semana), foi realizada utilizando os questionários IDATE-T (Inventário do Traço de Ansiedade), IDATE-S (Inventário do Estado de Ansiedade) e SUDS (Unidades Subjetivas da Escala de Aflição). O teste ANOVA One-way para medidas repetidas (momentos) foi usado para comparar os questionários. O teste Bonferroni post-hoc foi aplicado para identificar as diferenças entre os momentos. As medidas de VO2max foram analisadas através de um teste de "t" dependente. RESULTADOS: Os resultados mostraram redução do IDATE-T na 6° e 12° semanas de exercício; no entanto, o IDATE-S e o SUDS monstraram uma redução apenas na 12° semana. O VO2max apresentou melhora significativa após 12 semanas de intervenção em relação à linha de base. CONCLUSÃO: Conclui-se que o protocolo adotado foi capaz de promover efeitos benéficos sobre a aptidão cardiorrespiratória e sobre os níveis de ansiedade dos pacientes com transtorno de pânico.

OBJECTIVE: To investigate the effects of a regularly repeated aerobic exercise series on anxiety and maximum oxygen consumption (VO2max) in Panic Disorder patients. METHODS: Ten previously sedentary female subjects diagnosed with Panic Disorder performed 36 sessions of aerobic exercise (at 70 to 75% of VO2max), 3 times per week during 12 weeks. A cardiopulmonary evaluation (ergospirometry test) was used to set the intensity of training as well as to establish baseline and post-training VO2max parameters. The assessment of anxiety symptoms was performed at baseline, at the end of the 6th and 12th weeks, using the Trait Anxiety Inventory (STAI-T) and State Anxiety Inventory (STAI-S), and the Subjective Units of Distress Scale (SUDS) questionnaires. One-way ANOVA for repeated measurements (at 3 moments: Baseline, 6th week (mid-training) and 12th week (post-training) was used to compare the evolution of the questionnaires; the Bonferroni post hoc test was applied to identify differences between moments. A dependent t-test was performed for measures of VO2max. RESULTS: Compared to baseline, (a) STAI-T showed significant anxiety reductions at mid- and post-training moments; (b) STAI-S and SUDS recorded anxiety reductions only at Post-training; (c) VO2max showed a significant improvement at Post-training. CONCLUSION: This protocol promoted beneficial effects on cardiorespiratory fitness and anxiety levels of Panic Disorder patients.

https://doi.org/10.5935/MedicalExpress.2016.03.06 5283 downloads

15.

Expression of CD90 and P75NTR stem cell markers in ameloblastomas: a possible role in their biological behavior
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SILVA, Fernanda Paula Yamamoto

; DIAS, Andrielle

; COELHO, Carolinne Almeida

; GUERRA, Eliete Neves

; MARQUES, Ana Elizia Mascarenhas

; DECURCIO, Daniel de Almeida

; MANTESSO, Andrea

; CURY, Sérgio Elias Vieira

; SILVA, Brunno Santos de Freitas

Brazilian Oral Research

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2016, Volume 30 N. 1 elocation e109

Abstract: En | Text: En | PDF: En

Abstract Multicystic and unicystic ameloblastomas are benign odontogenic tumors that present distinct biological behavior. The investigation of stem cells has become an important branch of tumor biology, with several studies addressing the possible role of these cells in tumor growth, angiogenesis, progression, infiltration and invasiveness. This study evaluated the immunohistochemical expression of CD90(Thy-1) and P75NTR stem cell markers in multicystic and unicystic ameloblastomas. Seventeen (17) samples of ameloblastomas (multicystic, n = 10; unicystic, n = 7) were submitted to immunohistochemical reactions and graded semi-quantitatively. The Kolmogorov-Smirnov test was used to verify possible differences in CD90 and P75NTR expressions between multicystic and unicystic ameloblastomas (p < 0.05). CD90 immunostaining was observed in all multicystic ameloblastoma specimens (n = 10), in the cytoplasm of the fibroblasts and vascular endothelial cells of the tumor stroma, near the neoplastic odontogenic epithelia. The staining of stromal CD90 was significantly higher in multicystic than in unicystic ameloblastomas (p = 0.003). Nuclear P75NTR immunostaining was observed in all ameloblastoma specimens. A significant difference was seen in the epithelial staining of P75NTR between multicystic and unicystic types (p = 0.007). The increased expression of CD90 and P75NTR found in multicystic ameloblastomas suggests a behavioral biological difference between multicystic and unicystic ameloblastomas, as well as a difference in ameloblastoma development.

https://doi.org/10.1590/1807-3107BOR-2016.vol30.0109 1800 downloads

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