bluuebunny/crossref_metadata_2025 huggingface dataset:
Influência da composição e das variáveis de processamento deformulações à base de argilas - uso em materiais refratários
Authors: Figueiredo J. M. R. , Fernandes I. M. M. , Silva V. J. , Neves G. A. , Ferreira H. C. , Santana L. N. L.
Published: February 2018

Resumo As argilas são componentes fundamentais das massas para produção de materiais cerâmicos tradicionais, pois garantem plasticidade na etapa de conformação e resistência mecânica após a queima; também podem ser utilizadas nas formulações de cerâmicas refratárias devido ao desenvolvimento da fase mulita em temperaturas elevadas. O objetivo deste trabalho foi avaliar o efeito da composição, tempo de maturação e temperatura de queima em formulações à base de argilas para uso na fabricação de materiais refratários. As argilas foram caracterizadas por análise granulométrica, análise química, refratariedade, difração de raios X, análise térmica diferencial e termogravimétrica. As formulações contendo caulim mais ball clay e caulim mais esmectita foram submetidas à maturação por um período de 1 a 4 semanas. Em seguida, as massas foram conformadas por prensagem uniaxial obtendo-se corpos de prova, que foram submetidos a tratamento térmico em 1200, 1300 e 1400 °C, e, posteriormente, analisados quanto às propriedades: absorção de água, retração linear de queima e resistência à flexão em três pontos. Os resultados obtidos evidenciaram que as formulações em estudo apresentaram após queima fases de quartzo, cristobalita e mulita como fase majoritária. A temperatura de queima foi o parâmetro que apresentou maior influência nas propriedades avaliadas, com maior efeito da temperatura mais alta (1400 °C).
Optimization of the process of obtaining RE 2 O 3 from xenotime using statistical design
Authors: Gomes Y. F. , Ribeiro S. , Costa M. C. B. , Motta F. V.
Published: February 2018

Abstract The study of the production of the mixed rare earth oxide (RE2O3) from xenotime via hydrometallurgy was performed to evaluate the significance of the effects of three factors including the melting temperature (A), the ratio of NaOH/xenotime (B), and time (C) for the first stage of alkaline fusion by using full 2³ factorial design. Also, seven factors were studied including liquid/solid ratio (LS), inert (I1), excess HNO3 (EA), temperature (TL), inert (I2), time (HL), and inert (I3) for the second and third steps, which were the oxalic acid leaching and precipitation, using Plackett-Burman design (PBD). Optimizing factors for significance were performed using plots of interactions, analysis of variance (ANOVA), Pareto charts, surface charts, analysis of Student’s t-test and F test. A regression model was suggested and satisfactorily adjusted for the experimental data of the process of alkaline fusion, revealing an elevated coefficient of determination (R2=0.92) to a Fcalculated value well above the Ftabulated value, at a 95% confidence level. The RE2O3 was characterized by chemical analysis, X-ray diffraction, scanning electron microscopy, and specific surface area. This process resulted in a material with identical physical and chemical properties to the isolated compounds of rare earths and can be used as an alternative sintering additive in advanced ceramics, and indicated that the cost of final production of RE2O3 can be lower compared to commercial Y2O3.
Factorial design and statistical analysis of smectite clay treatment by hydrocyclone
Authors: Gama A. J. A. , Figueirêdo J. M. R. , Brito A. L. F. , Gama M. A. , Neves G. A. , Ferreira H. C.
Published: February 2018

Abstract Bentonite clays are materials composed by one or more smectite clay minerals and some accessory minerals, mainly quartz, cristobalite, mica, feldspars and other clay minerals such as kaolinite. These contaminants present in clays have a large distribution of particle sizes which severely restrict their industrial applications, with the use of hydrocyclone as a likely solution for their reduction. This study aims to analyze the treatment of smectite clays from the state of Paraíba using modeling, simulation and optimization of the variable average particle diameter in relation to various process variables related to the hydrocyclone. In this study, the average diameter of smectite clays was evaluated as a function of the factors: pressure, apex diameter and vortex diameter of the hydrocyclone. Complete factorial design and addition in the central points were used to model the hydrocycloning process. The results evidenced reduction in equivalent average particle size of approximately 19.2%. Regarding the simulations, the optimum point with the lowest value was found for the average diameter of 4.033 µm, with a pressure of 4.3 bar, apex opening of 5.3 mm, and vortex opening of 6.3 mm, all at a 95% confidence level.
Comparative study on zinc oxide nanocrystals synthesized by two precipitation methods
Authors: Bodke M. R. , Purushotham Y. , Dole B. N.
Published: February 2018

Abstract Zinc oxide nanocrystals were synthesized by two precipitation methods successfully. The nanocrystals prepared via method I (zinc acetate dihydrate precipitation with KOH) were smaller in crystallite size (~20 nm) as compared to method II (zinc nitrate hexahydrate precipitation with N,N-dimethylformamide, ~33 nm). FTIR technique was used to study chemical bonding; SEM and EDS were used to study morphology and chemical compositions. Number of concentric rings corresponding to diffraction peaks was higher in SAED pattern for ZnO nanocrystals synthesized by method I than II. Variation in the energy band gap as a function of particle size was determined using absorption spectra from UV-vis-NIR spectrophotometer. Redshift was observed in the energy band gap of sample prepared via method II. Particle size and the structure of the nanocrystals were analysed by transmission electron microscope (TEM). From TEM study, it was found that the average particle size of method I nanocrystals was smaller compared to method II nanocrystals. Magnetic study was carried out using VSM. Ferromagnetism like contribution was observed for the sample prepared by method II.
Structural changes of Cr-beidellite treated up to 1350 °C in oxygen or nitrogen atmospheres
Authors: Santos H. S. , Cesio A. M. , Gauna M. , Justo V. F. , Volzone C.
Published: February 2018

Abstract Beidellite clay mineral after intercalation of OH-Cr(III) species were thermally analyzed up to 1350 °C in oxygen and nitrogen atmospheres. OH-Cr-beidellite can be used as a pillared clay precursor for catalysis or as adsorbent applications. However, in this paper beidellite enriched in chromium were analyzed at different thermal treatments up to high temperature for evaluating structural changes for possible future ceramic applications. The structural changes were followed by thermal analysis and X-ray diffraction. The thermal treatment of OH-Cr-beidellite in oxygen and nitrogen atmospheres developed different mineralogical phases up to 1050 °C, but at higher temperatures, the same phases were developed in both atmosphere treatments. Eskolaite phase (Cr2O3) appeared in the sample after heating at 400 °C in oxygen atmosphere, whereas grimaldite (CrO-OH) in nitrogen atmosphere, maintaining the starting phases. At 1000 °C the raw clay minerals disappeared, as it is knew. At 1050 °C in nitrogen atmosphere, grimaldite was absent and eskolaite appeared. At 1350 °C in the samples calcined in both atmospheres, quartz, cristobalite and mullite as the main phases and in lower contents aluminum oxide and aluminum-chromium oxide [(Al,Cr)2O3] were present.
Influência dos cátions lítio (Li + ), sódio (Na + ) e potássio (K + ) na reologia de bentonitas brasileiras para uso em fluidos de perfuração base aquosa
Authors: Silva I. A. da , Sousa F. K. A. de , Menezes R. R. , Ferreira H. S. , Neves G. de A. , Ferreira H. C.
Published: February 2018

Resumo Os cátions lítio (Li+), sódio (Na+) e potássio (K+) encontram-se em primeiro lugar no plano de seletividade para a obtenção de bentonitas monocatiônicas a partir das policatiônicas, influenciando de forma específica o comportamento reológico dos fluidos de perfuração base água. O objetivo deste trabalho foi estudar a influência do Li+, Na+ e K+ na reologia de bentonitas do estado da Paraíba, Brasil, para uso em fluidos de perfuração à base de água. Os novos depósitos de bentonitas brasileiras foram comparados com base nas suas características químicas, físicas, mineralógicas, propriedades reológicas e de filtração. As amostras de bentonitas foram caracterizadas por meio da composição química através do método clássico, capacidade de troca de cátions, análise granulométrica por difração a laser, difração de raios X e análises térmicas. A reologia das dispersões foi estudada e determinadas as viscosidades aparente, viscosidade plástica e limite de escoamento com base nas normas da API e Petrobras, além dos estudos de inchamento em água e filtrado. Os resultados mostraram uma melhora significativa nas propriedades reológicas e de filtração das dispersões após a aditivação com os carbonatos de lítio e de sódio, nessa ordem, havendo presença de tixotropia nas curvas de fluxo das dispersões de argilas estudadas.
Avaliação dos serviços de acolhimento institucional de crianças e adolescentes no Recife
Authors: Acioli Raquel Moura Lins , Barreira Alice Kelly , Lima Maria Luiza Carvalho de , Lima Maria Luiza Lopes Timóteo de , Assis Simone Gonçalves de
Published: February 2018

Resumo O objetivo do estudo foi avaliar a estrutura e o processo dos acolhimentos institucionais para proteção de crianças e adolescentes vítimas de abandono e/ou violência no Recife. Foi aplicado um questionário estruturado aos responsáveis pelos serviços, e então calculadas as frequências das variáveis e estabelecida a seguinte classificação do grau de implantação: crítico, quando a adequação à norma preconizada for inferior a 40%; inadequado, de 40-59%; aceitável, de 60%- 89%; adequado e ótimo, de 90-100%. Para análise qualitativa foram realizadas entrevistas com um gestor do poder judiciário e três do executivo. Das cinco instituições filantrópicas, duas apresentaram estrutura padrão ótimo, duas, aceitáveis, e uma, inadequada. Dentre as instituições públicas, uma municipal foi considerada inadequada e as demais, aceitáveis. Com relação ao processo, uma instituição apresentou padrão ótimo e as outras, aceitáveis. A análise de conteúdo permitiu observar que os maiores entraves para a realização das medidas previstas pelo Estatuto da Criança e de Adolescente decorrem do uso de drogas, distanciamento geográfico da família, falta de integração com outras instituições e rotatividade dos profissionais.
Análise dos casos de sífilis gestacional e congênita nos anos de 2008 a 2010 em Fortaleza, Ceará, Brasil
Authors: Cardoso Ana Rita Paulo , Araújo Maria Alix Leite , Cavalcante Maria do Socorro , Frota Mirna Albuquerque , Melo Simone Paes de
Published: February 2018

Resumo O presente estudo analisa os casos notificados de sífilis em gestantes e os possíveis desfechos para o feto e o recém-nascido em Fortaleza, Ceará. Estudo transversal que analisou 175 casos notificados de sífilis em gestantes, pareados com as correspondentes notificações de sífilis congênita durante os anos de 2008 a 2010. Utilizou-se estatística descritiva com frequências absolutas e relativas, medidas de tendência central e dispersão e qui-quadrado de Pearson para analisar a significância estatística, utilizando o valor de p < 0,05. Foram analisadas variáveis sociodemográficas das gestantes/puérperas, da assistência prestada aos recém-nascidos e o desfecho dos casos. Os resultados mostraram a ocorrência da sífilis em mulheres jovens com mais de 85,0% de tratamentos inadequados, 62,9% dos parceiros sexuais não tratados ou com informação ignorada e percentuais elevados da não realização dos exames preconizados para a investigação de sífilis congênita nas crianças. Dentre os conceptos, cinco foram natimortos, um aborto e três óbitos neonatais. A falta de tratamento adequado dos casos de sífilis em gestantes pode estar associada à morbimortalidade dos conceptos, mantendo essa infecção como um fardo no rol dos problemas de saúde pública.
Validade de construto e consistência interna da Escala de Práticas no Lazer (EPL) para adultos
Authors: Andrade Rubian Diego , Schwartz Gisele Maria , Tavares Giselle Helena , Pelegrini Andreia , Teixeira Clarissa Stefani , Felden Érico Pereira Gomes
Published: February 2018

Resumo Este estudo propõe e analisa a validade de construto e a consistência interna da Escala de Práticas no Lazer (EPL). O instrumento busca identificar as preferências e o envolvimento em práticas nos diferentes contextos do lazer em adultos. A construção do instrumento deu-se a partir dos conteúdos culturais do lazer (artístico, manual, físico-esportivo, intelectual, social, turístico, virtual e contemplação/ócio). O processo de validação foi realizado com: a) Análise de conteúdo por especialistas em lazer, que avaliaram o instrumento quanto à clareza da linguagem e pertinência prática, o que permitiu o cálculo do coeficiente de validade de conteúdo (CVC); b) Reprodutibilidade em teste-reteste com 51 sujeitos para o cálculo do coeficiente de variação temporal; e c) Análise de consistência interna com 885 participantes. A avaliação de conteúdo apresentou coeficientes adequados, tanto com relação à clareza da linguagem (CVCt = 0,883), quanto à pertinência prática (CVCt = 0,879). Os coeficientes de reprodutibilidade foram de moderados a excelentes. A escala apresentou adequada consistência interna (0,72). A EPL apresentou qualidade psicométrica e valores aceitáveis em sua estrutura, podendo ser utilizada para investigar o envolvimento em práticas nos diferentes conteúdos do lazer de adultos.
Impactos de adoecimento de longa duração: experiência de adultos jovens com Leucemia Mieloide Aguda
Authors: Barsaglini Reni Aparecida , Soares Beluci Bianca Nunes de Siqueira
Published: February 2018

Resumo O presente artigo analisa os impactos materiais e imateriais imersos na experiência de adultos jovens com um adoecimento de longa duração – Leucemia Mieloide Aguda. Decorre de pesquisa mais ampla, inspirada na Fenomenologia de Alfred Schutz. Os dados foram obtidos por entrevistas em profundidade com quatro jovens, de 20 a 28 anos, em fase de manutenção no tratamento oncológico, entre novembro de 2013 a janeiro de 2014, em Mato Grosso. Os resultados enfocam aspectos marcantes dos impactos na experiência como o processo de descoberta da enfermidade em que o diagnóstico provocou sentimentos mobilizados por ideias sobre uma doença grave. Seguem-se os impactos na aparência devidos ao tratamento, sobressaindo a queda de cabelo e as estratégias cotidianas de enfrentamento, bem como o aumento ou a perda de peso. Por fim, é marcante o impacto da iminência da morte diante da letalidade da doença e o testemunho da ocorrência em pessoas conhecidas, colocando-a como possibilidade concreta para si, mas também como sobreviventes. Os impactos são os efeitos e as transformações na vida das pessoas e seu entorno e evocam (re) ações, contudo, diluem-se na experiência compondo-a, e não sendo homogênea, sua abordagem privilegia a singularidade inscrita em biografias contextualizadas.
Oral health outcomes: the association of clinical and socio-dental indicators to evaluate dental caries in preschool children
Authors: Antunes Lívia Azeredo Alves , Ornellas Giulia , Fraga Renato Silva , Antunes Leonardo Santos
Published: February 2018

Abstract Dental caries is a public health problem that impacts oral health related to quality of life (OHRQoL). This study aimed to evaluate the outcome of dental caries in children by associating clinical and socio-dental indicators. A cross-sectional study was carried out with 2 to 6-year-old children who attended public day care centers in a city in the Southeast Region of Brazil. After sample calculation, 446 children were randomly selected by eligibility criteria. Two professionals evaluated dental caries using WHO (2013) criteria and classified subjects according to early childhood caries (ECC) severity. Parents/care- givers answered a characterization questionnaire and self-reported socio-dental indicator (B-ECO-HIS). The prevalence of dental caries was 33.7%. The children with high severity of ECC had 5 times higher chance of suffering an impact on OHRQoL. The one way ANOVA test showed that the impact on OHRQoL (ECOHIS scores) was associated with ECC. The outcome dental caries in oral health presented high prevalence as clinical indicator and high impact on OHRQoL as socio dental indicator. Clinical and socio-dental indicators should be evaluated together.
Trajetórias Terapêuticas Familiares: doenças raras hereditárias como sofrimento de longa duração
Authors: Aureliano Waleska de Araújo
Published: February 2018

Resumo Este artigo analisa elementos comuns na trajetória de pessoas afetadas por doenças raras hereditárias no Brasil, tendo por cerne a busca por diagnóstico e tratamento, e a reprodutibilidade da família. Classificam-se como “raras” as doenças que afetam 65 pessoas a cada 100 mil. São condições geralmente crônicas e degenerativas, muitas delas sem cura ou tratamento efetivo. Cerca de 80% das doenças raras têm origem genética e são hereditárias. Este dado traz implicações importantes no que diz respeito às políticas de atenção à saúde da família, à reprodução e ao cuidado para condições clínicas que, em alguns casos, atravessam várias gerações. Para análise dos dados, articulam-se dois eixos teóricos: os estudos de família e parentesco e as análises sobre os sofrimentos de longa duração. A pesquisa desenvolveu-se junto a pessoas afetadas por doenças raras hereditárias e seus familiares, nos cenários políticos nos quais esses atores transitam, como associações de pacientes, congressos científicos e audiências públicas. Evidencia-se a necessidade de construção de uma pauta contínua sobre as doenças raras no Brasil, capaz de promover de fato o acesso universal e integral das pessoas afetadas ao sistema público de saúde, e buscar soluções para minorar sofrimentos que ameaçam a própria continuidade da família.
Oldenburg Burnout Inventory - validação de uma nova forma de mensurar Burnout no Brasil
Authors: Schuster Marcelo da Silva , Dias Valéria da Veiga
Published: February 2018

Resumo Este estudo objetivou a validação da escala Oldenburg Burnout Inventory (OLBI) para o Brasil. A metodologia incluiu uma coleta de dados por meio de uma pesquisa quantitativa do tipo survey com 273 pessoas. Para a análise de dados foi utilizada a modelagem de equações estruturais. A escala foi validada após ser submetida a todos os pressupostos estatísticos, tendo sua estrutura reduzida de 16 para 13 variáveis, o que melhorou seu poder de mensuração. O presente estudo contribui com a literatura ao apresentar uma escala adaptada ao Brasil, que pode ser usada em estudos na área de saúde do trabalhador, uma vez que proporciona uma maneira de mensurar uma síndrome responsável por problemas de diversas ordens, com impactos dentro e fora das organizações.
How does innovation work within the developmental network state? New data on public-private agreements in a U.S. Department of Energy laboratory
Authors: Keller Matthew R. , Block Fred , Negoita Marian
Published: February 2018

Abstract The value of the Department of Energy (DOE)-owned national laboratories to the U.S. national innovation system has long been a subject of debate. Advocates have drawn attention to the central role of the labs in the development of technologies including advanced batteries, solar energy breakthroughs, imaging technologies, and various IT endeavors, among others. Critics have recurrently suggested that the labs’ innovative capacities have been undermined by a lack of engagement with commercial firms and managerial tactics. Perhaps surprisingly, what has often been missing from the debate is a thorough review of data on the public-private partnerships in which the labs engage with private firms. This paper draws on heretofore non-public data on one type of contractual arrangement - Work-For-Others (WFO) agreements - in which the labs perform contract work for private firms. We review 10 years of WFO data for a single DOE laboratory. Our analysis provides an initial picture of the surprisingly diverse geography and array of firms that employed the labs as contract R&D providers, as well as of key characteristics of these agreements. Although our data capture only a single laboratory’s agreements, the findings reinforce the importance of looking at the complex, overlapping network of programs within the U.S. federal system that support private sector innovation.
As formas de manifestação da privacidade nos três espíritos do capitalismo: da intimidade burguesa ao exibicionismo de si nas redes sociais
Authors: Thibes Mariana Zanata
Published: February 2018

Resumo A partir da articulação dos modos de vivência da privacidade em cada espírito do capitalismo, argumentamos que as transformações relativas à privacidade, comumente atribuídas à disseminação das novas tecnologias da informação e comunicação, só podem ser devidamente compreendidas a partir da ampliação do olhar à procura dos processos sócio-históricos que delimitam as fronteiras entre o público e o privado. Ao fazer isso, podemos perceber como os valores e justificações, que animam o capitalismo conexionista e promovem uma aproximação inédita entre a vida privada e o trabalho, redefinem os limites que separam a vivência íntima e privada da esfera da economia.
Potential of natural repellents methylanthranilate and anthraquinone applied on maize seeds and seedlings against house sparrow (Passer domesticus) in captivity
Authors: Ahmad S. , Saleem Z. , Jabeen F. , Hussain B. , Sultana T. , Sultana S. , Al-Ghanim K. A. , Al-Mulhim N. M. A. , Mahboob S.
Published: February 2018

Abstract Various bird pests caused severe economic losses to valuable crops and fruit orchards all over the world. Among the birds, house sparrow is also considered to cause heavy plunder, not only to seeds of crops but also seedlings especially in organic farming. In present study two bird repellents, methylanthranilate and anthraquinone tested against house sparrows on maize seeds and seedlings in aviary conditions. Trial group in aviary-I, the treated maize seeds and seedlings with different doses of both bird repellents, control group in aviary-II, untreated seeds and seedlings were provided for three hours in the early morning. In each aviary, two closed circuit cameras were also installed to monitor the behavioral responses against different concentrations of both chemical repellents. Statistical analysis showed that there existed highly significant (P<0.01) variations among the trial and control groups for seeds and seedlings. By comparing both repellents, significant (P<0.05) differences were detected and anthraquinone showed better efficacy when compared to methylanthranilate, but in maize seedlings both repellents equal repellent properties. Non-significant (P>0.05) differences were observed in different grading of both natural chemical repellents for maize seeds while significant (P<0.05) variations were noticed for maize seedlings when provided to sparrows. By videotaped behavior sparrows presented manifest head juddering and feather upsetting activities by consumption of treated seeds and seedlings with higher concentrations of both natural bird repellents.
Black and white teas as potential agents to combine with amphotericin B and protect red blood cells from amphotericin B-mediated toxicity
Authors: Oliveira V. M. , Khalil N. M. , Carraro E.
Published: February 2018

Abstract Amphotericin B is a fungicidal substance that is treatment of choice for most systemic fungal infections affecting immunocompromised patients. However, severe side effects have limited the utility of this drug. The aim of this study was to evaluate the antifungal effect of the combination of amphotericin B with black tea or white tea and protective of citotoxic effect. The present study shows that white and black teas have additive effects with amphotericin B against some species Candida. In addition, the combination of white and black tea with amphotericin B may reduce the toxicity of amphotericin B to red blood cells. Our results suggest that white and black tea is a potential agent to combine with amphotericin for antifungal efficacy and to reduce the amphotericin dose to lessen side effects.
Susceptibility of cariogenic microorganisms to phytoconstituents
Authors: Ferreira G. L. S. , Bezerra L. M. D. , Ribeiro I. L. A. , Morais Júnior R. C. D. , Castro R. D.
Published: February 2018

Abstract This study aimed to evaluate the in vitro antibacterial activity of the phytochemicals thymol, linalool, and citronellol against Streptococcus mutans, Streptococcus salivarius and Streptococcus oralis. Disk diffusion screening on solid medium and measurement of the diameter of the bacterial growth inhibition halos was the technique utilized. The Minimum Inhibitory Concentration (MIC) of the substances was determined using serial substance dilutions and microdilution technique in Brain Heart Infusion culture medium. After incubation for 24 hours in an oven at 37 °C, plate reading was completed and confirmed by visual method using 2,3,5 triphenyl tetrazolium chloride dye. The Minimum Bactericidal Concentration (MBC) was determined from MIC subcultures. Assays were performed in triplicate, and chlorhexidine was used as a positive control. The diameters in mm of the growth inhibition halos ranged between 7.3 and 10.7 for S. mutans, 7.3 and 10.0 for S. oralis, and 8.2 and 9.8 for S. salivarius. The MIC and MBC values obtained converged, ranging from maximum values in the presence of Linalool (1,250.0 mg/mL, 2,500.0 mg/mL and 2,500.0 mg/mL, respectively, for S. mutans, S. oralis, and S. salivarius); and minimum values with Thymol (312.5 μg/ml, 156.2 μg/mL and 156.2 μg/ml, respectively for S. mutans, S. oralis, and S. salivarius). All the tested phytochemicals displayed antibacterial activity, thus representing substances with potential applications in preventing tooth decay.
Reports of new wing color polymorphism and taxonomic information to cercopids (Auchenorrhyncha: Cercopidae) from upland rice crop, Pará State, Brazil
Authors: Paladini A. , Domahovski A. C. , Krinski D. , Foerster L. A.
Published: February 2018

Abstract Cercopidae is one of the largest families of the spittlebug superfamily Cercopoidea. Most spittlebugs species are characterized by bright color patterns. Thus, this study evaluated for the first time the Cercopidae species collected in rice crops, Novo Progresso, Pará state, Brazil. Insects were collected weekly between November/2010 and March/2011 from areas without (WA) and with agrochemical applications (AA). Four species were recorded: Deois incompleta (Walker, 1851) (71 specimens in WA area and 50 in AA area); Mahanarva spectabilis (Distant, 1909) (39 specimens in WA area and 39 in AA area); Mahanarava tristis (Fabricius, 1803) (26 specimens in WA area and 20 in AA area); Zulia pubescens (Fabricius, 1803) (11 specimens in WA area and four in AA area). The species collected displayed pronounced color polymorphism when compared with the color patterns of the same species from other regions. This makes correct identification more difficult for these species. Therefore, taxonomic and diagnostic informations provided in this study will help in the correct identification, control and monitoring of these insects in future studies. Besides that, we recommend monitoring in rice fields and further study of the biology and ecology of cercopids in Brazil to assess the potential of these species as rice pests.
Environmental variables in packing houses and their effects on the quality of grapes
Authors: Vasconcelos Osvaldo C. , Dacanal Cristiane , Turco Sílvia H. N. , Freitas Sergio T. , Ramos Clóvis M. C. , Lima Paula M. L. de
Published: February 2018

ABSTRACT The aim of this study was to characterize the thermal environment in the selection and packing areas of a packing house and its effects on the quality of table grapes produced in the São Francisco Valley, Brazil. The thermal environment was monitored during the winter and summer seasons. The highest value of air temperature (Tair) and the lowest relative humidity (RH) observed in the packing house were 35 °C and 40.0%, respectively, obtained during the summer, for 8 h. After observing the thermal environment data of the packing house, simulations were performed to evaluate the effect of the ideal environmental storage conditions and observed thermal conditions on the postharvest quality of “Thompson” grapes. Grapes were harvested and stored directly at the ideal temperature and RH of 0 °C and 90%, respectively, or previously exposed to a temperature of 35 °C and RH of 40% for 8 h, the thermal environment observed in the evaluated packing house, followed by storage at 0 °C and 90% RH. Fruit exposure to high temperature and low RH before the ideal storage conditions resulted in higher loss of berry firmness and weight, along with increased soluble solids and dry matter content of rachis and berry. Based on these results, the environmental conditions observed in the packing house result in berry dehydration, which accelerates the loss of fruit quality during storage.
Surface drainage in leveled land: Implication of slope
Authors: Winkler Antoniony S. , Silva Jaqueline T. da , Parfitt José M. B. , Teixeira-Gandra Claudia F. A. , Conceço Germani , Timm Luis C.
Published: February 2018

ABSTRACT In the lowlands of Rio Grande do Sul, land leveling is mostly carried out with no slope for the purpose of rice production. In this environment, soils with a low hydraulic conductivity are predominant owing to the presence of a practically impermeable B-horizon near the surface. Land leveling leads to soil accommodation resulting in the formation of depressions where water accumulates after heavy rainfalls, subsequently leading to problems with crops implanted in succession to rice, such as soybeans. The objective of this research was to quantify the areas and volumes of water accumulation in soil as a function of the slope of land leveling. Five typical leveled lowland areas were studied as a part of this research. The original areas presented slopes of 0, 0.20, 0.25, 0.28 and 0.40%, which were used to generate new digital elevation models with slopes between 0 and 0.5%. These newly generated digital models were used to map the depressions with surface water storage. In conclusion, land leveling with slopes higher than 0.1% is recommended to minimize problems with superficial water storage in rice fields.
Performance of different methods for reference evapotranspiration estimation in Jaíba, Brazil
Authors: Silva Gustavo H. da , Dias Santos H. B. , Ferreira Lucas B. , Santos Jannaylton É. O. , Cunha Fernando F. da
Published: February 2018

ABSTRACT FAO Penman-Monteith (FO-PM) is considered the standard method for the estimation of reference evapotranspiration (ET0) but requires various meteorological data, which are often not available. The objective of this work was to evaluate the performance of the FAO-PM method with limited meteorological data and other methods as alternatives to estimate ET0 in Jaíba-MG. The study used daily meteorological data from 2007 to 2016 of the National Institute of Meteorology’s station. Daily ET0 values were randomized, and 70% of these were used to determine the calibration parameters of the ET0 for the equations of each method under study. The remaining data were used to test the calibration against the standard method. Performance evaluation was based on Willmott’s index of agreement, confidence coefficient and root-mean-square error. When one meteorological variable was missing, either solar radiation, relative air humidity or wind speed, or in the simultaneous absence of wind speed and relative air humidity, the FAO-PM method showed the best performances and, therefore, was recommended for Jaíba. The FAO-PM method with two missing variables, one of them being solar radiation, showed intermediate performance. Methods that used only air temperature data are not recommended for the region.
Potassium doses in previous crops and effect on soybean in succession
Authors: Bossolani João W. , Lazarini Edson , Souza Luiz G. M. de , Parente Tiago de L. , Caioni Sheila , Biazi Naira Q. de
Published: February 2018

ABSTRACT Early potassium fertilization in previous crops may be beneficial to the main crop in succession. The objective of this study was to investigate the behavior of the soybean crop as a function of potassium (K) doses in the previous crops, associated or not with K application in soybean. The experiment was carried out from 2012 to 2015 in an experimental area of the Faculty of Engineering, UNESP, Campus of Ilha Solteira-SP, located in Selvíria-MS, Brazil. For the previous crops, a randomized block design was used in a 3 x 4 factorial scheme with four replications, i.e., three previous crops (maize, sorghum and millet) and four K doses (0, 35, 70 and 120 kg ha-1 of K2O). For soybean in succession, a randomized complete block design was used in the split-plot scheme. The treatments were arranged in a 3 x 4 x 2 factorial scheme with four replicates, i.e., soybean sowing on three types of straw (maize, sorghum and millet), residual of the four K doses and with or without top-dressing K fertilization in the soybean. Millet accumulated higher K content in comparison to maize and sorghum. The return of K to the system by millet is similar to that by maize. Potassium doses in the previous crops do not alter their dry matter production and K content. Potassium fertilization in the soybean crop in succession to millet allows higher yields.
Inventários das brincadeiras e do brincar: ativando uma memória dos afetos
Authors: Jurdi Andrea Perosa Saigh , Silva Carla Cilene Baptista , Liberman Flavia
Published: February 2018

O módulo Atividades e Recursos Terapêuticos: Lúdico e Lazer tem proposto aos estudantes experimentarem a produção de inventários, forma de narrativa que possibilita resgatar a memória lúdica atravessada pelos afetos e constituí-la no presente. Permite o contato com narrativas familiares, com a história pessoal e o conhecimento das brincadeiras e brinquedos das diferentes gerações. Deixar registrada essa vivência por meio de imagens e escrita tem como objetivo contribuir para a reflexão sobre metodologias que podem ser utilizadas para sensibilizar o estudante na construção do ser terapeuta, para a formação dos terapeutas ocupacionais e para profissionais de outros campos que utilizam as brincadeiras e o brincar em seu cotidiano de trabalho. Podemos pensar nos inventários como narrativas concretas que dão visibilidade às memórias e afetos, ativando um devir-criança, essencial para a formação lúdica.
In vitro activity of the hydroalcoholic extract of Chenopodium ambrosioides against engorged females of Rhipicephalus (Boophilus) microplus
Authors: Oliveira Eduardo , Silva Manoela da , Sprenger Lew , Pedrassani Daniela
Published: February 2018

ABSTRACT: Rhipicephalus (Boophilus) microplus, known as the cattle tick, is a cause of great economic losses for dairy cattle farming because of its high frequency of occurrence and the difficulty in controlling it. The aim of this study was to evaluate the in vitro activity of Chenopodium ambrosioides extract on R. (B.) microplus. For this purpose, 125 females were selected and classified into five groups according to their weight, in order to ensure that the females used presented homogeneous weight. The treatments comprised 40 and 60% extracts of Chenopodium ambrosioides, distilled water, ethanol (70ºGL) and 12.5% amitraz. The extracts of C. ambrosioides (40 and 60%) showed effectiveness of 99.7 and 100% and higher percentages of dead females than the other treatments: 64 and 96%, respectively (p<0.001). In the groups exposed to distilled water and ethanol (70º GL), 92 and 88% of the females maintained oviposition. In the females exposed to 40 and 60% extracts, oviposition of 36 and 4% occurred, respectively. It was concluded that the extract of Chenopodium ambrosioides, at both concentration evaluated, had high efficiency against engorged females of cattle ticks.
Hygienic-sanitary quality of Minas fresh cheese sold in the city of Botucatu, São Paulo
Authors: Queiroz Murilo Mariz , Rossi Bruna Fernanda , Castilho Ivana Giovannetti , Rall Vera Lucia Mores
Published: February 2018

ABSTRACT: The Minas fresh cheese is a fresh and moist cheese and, therefore, has a short shelf-life. The use of raw milk as the main feedstock, the absence of ripening and the facility of contamination are factors that can compromise the product’s microbiological quality. The aim of this study was to describe the hygienic-sanitary quality of 50 Minas fresh cheeses marketed in Botucatu city, São Paulo, Brazil, close to their production date, and another 50 units from the same lot exactly on the expiration date, according to the Brazilian Sanitary Surveillance Agency (ANVISA). We also searched for enterotoxins genes in Staphylococcus aureus and its in vitro expression. In 36% of the first analyzed samples, the count of coliforms at 45ºC was above the limit and, as for the second analysis, 44%. Regarding coagulase positive staphylococci, 10 (20%) samples showed concentration above the permitted by law next to the production date and 14% on the expiration date. Salmonella was only observed in one sample analyzed near the date of production, while L. monocytogenes only in one sample analyzed on the expiration day. We isolated three enterotoxigenic strains of S. aureus that produced Staphylococcal Enterotoxin B (SEB) and Staphylococcal Enterotoxin C (SEC) in vitro, highlighting the importance of proper storage of this product due to its potential to cause intoxication. Overall, the quality of Minas fresh cheese is still unsatisfactory, leading to risks to consumers’ health.
Microbiological quality of refrigerated raw milk in the dairy farm and after transport to the processing dairy plant
Authors: Mörschbächer Vivian , Rempel Claudete , Maciel Mônica
Published: February 2018

ABSTRACT: Transport of cooled raw milk in bulk has greatly improved the quality of the raw material collected by dairy plants as it reduces the proliferation of mesophilic microorganisms that cause milk acidity and hinder its processing. However, refrigeration has favored the growth of psychrotrophic microorganisms which are able to grow at low temperatures (below 10ºC) and that produce heat resistant enzymes which degrade some milk components, reducing milk shelf life and causing organoleptic changes. The aim of this paper was to evaluate the microbiological quality of raw milk in dairy farms and after its transport to the processing dairy plant, through plate counting of mesophilic and psychrotrophic microorganisms. Fourteen milk samples were collected from tanks of the dairy-farming properties, and one sample was collected from their milk transport tanker at the entrance of the processing plant. Our results showed that the mean number of mesophilic microorganisms was higher in samples collected straight from the dairy farm tanks than in the samples collected from the transportation tankers at the entrance of the plant. Of the 14 sampled tanks, 64.3% were non-compliant with legislation. The sample collected from the milk transportation tanker containing milk from all properties showed a higher mean number of psychrotrophic microorganisms than the dairy farm samples. We conclude that the milk from dairy properties showed a higher amount of mesophilic microorganisms, and after transportation, at the entrance of the processing plant, there is a higher amount of psychrotrophic microorganisms.
Neodusmetia sangwani (Subba Rao) (Hymenoptera: Encyrtidae) to control Antonina graminis (Maskell) (Hemiptera: Pseudococcidae) in pastures in Brazil: a revision
Authors: Batista Filho Antonio , Costa Valmir , Hojo Harumi
Published: February 2018

ABSTRACT: The use of the parasitoid Neodusmetia sangwani to control the Rhodes grass mealybug Antonina graminis is one of the best examples of classical biological control in the world. The situation could not be different in Brazil, where the pest has also been introduced, and kept under control after the release of its natural enemy. In this review, it is united information with respect to the successful use of a natural enemy in this country. Notes about the description and biology of the insects involved and rearing and release procedures of the parasitoid for the Rhodes grass mealybug control in Brazil will also be presented.
Ocorrência da brucelose e tuberculose bovina e percepção de riscos no Mato Grosso do Sul, Brasil
Authors: Piva Filho Gilson Luiz , Alves Ana Julia Silva e , Carvalho Laurêncio Garcia , Marinho Marcia , Queiroz Luzia Helena
Published: February 2018

RESUMO: Determinar a ocorrência da brucelose, da tuberculose e a percepção de riscos acerca de ambas as zoonoses foi o objetivo do estudo em rebanhos bovinos leiteiros do município de Paranaíba, Mato Grosso do Sul, Brasil. As visitas ocorreram entre novembro de 2012 e março de 2013, em 42 propriedades georreferenciadas, nas quais foram aplicados questionários aos produtores e realizadas as coletas de sangue para testes sorológicos e de tuberculinização. A ocorrência de focos, tanto da brucelose quanto da tuberculose, nas propriedades foi de 2,38% (1/42), porém, há um baixo conhecimento dos produtores sobre os fatores de risco para essas doenças.
Quality of unprocessed cooled fresh coconut water manually extracted by street vendors
Authors: Soares Karoline , Morais Daniela , Góis Vilson , Silva Jean , Costa Antônio , Silva Luana
Published: February 2018

ABSTRACT: Coconut water is a versatile beverage that is rich in nutrients, has few calories, and presents functional and therapeutic characteristics, improving the well-being and health of consumers. However, the growth of deteriorating microorganisms is facilitated by its water activity and high nutrient content; and when combined with improper handling, this product may become a carrier of foodborne diseases. Therefore, the objective of this work was to evaluate the quality of unprocessed cooled fresh coconut water manually extracted by street vendors. Twelve samples of coconut water were collected and subjected to physicochemical (total titratable acidity, pH, and total soluble solids) and microbiological (mesophilic, and psychrotrophic microorganisms, molds, yeasts, and thermotolerant and total coliforms) analyses. The physicochemical analysis showed variations of 4.3-5.4 for pH, 0.01-0.03 for total titratable acidity, and 2.8-6.3 for total soluble solids. The microbiological analysis showed high contamination in the samples by deteriorating microorganisms, with 58% of the samples contaminated with pathogenic microorganisms. Therefore, regular use of good hygiene practices for handling manually extracted coconut water is necessary to physicochemically and microbiologically standardize this product. Thus, ensuring the quality of the coconut water when it is manually extracted by street vendors and trade as an unprocessed, cooled, and fresh beverage and consequently minimize consumer’s health risks.
Small ruminant lentiviruses: economic and productive losses, consequences of the disease
Authors: Azevedo Dalva Alana Aragão de , Santos Vanderlan Warlington Souza dos , Sousa Ana Lídia Madeira de , Peixoto Renato Mesquita , Pinheiro Raymundo Rizaldo , Andrioli Alice , Teixeira Maria Fátima da Silva
Published: February 2018

ABSTRACT: Small ruminant lentiviruses, caprine arthritis encephalitis virus, and Maedi-Visna virus cause diseases that result in significant productive losses, mostly in dairy animals. These viruses belong to the Retroviridae family, Lentivirus genus, and constitute a heterogeneous group, which may generate implications for the diagnosis and control of small ruminant lentiviruses. Losses caused by them are associated with reproductive failure, short productive life, and decreased milk production by the infected animals. In addition, these viruses may reduce milk quality, affecting the production of dairy products such as cheese. Small ruminant lentiviruses lead to indirect losses, decreasing herd value and forcing the development of epidemiological trade barriers for animal germplasm. Control of small ruminant lentiviruses is important to promote optimal milk production and to reduce costs with medicine and technical assistance. This control may vary in caprine and ovine populations of each country, according to seroprevalence, variety of breeds, and peculiarities of the practiced management.
Interception of ‘Candidatus Phytoplasma solani’ in Brazil in apple tree propagative material imported from France
Authors: Eckstein Barbara , Botelho Stephanie Regina Alves , Oliveira Mayara Luana Coelho Alves de , Fernandes Fernanda Rausch , Sanches Márcio Martinello
Published: February 2018

ABSTRACT: Apple plants from France introduced in Brazil for research purposes were subjected to a phytosanitary analysis at the Plant Quarantine Laboratory of Embrapa Genetic Resources and Biotechnology (Cenargen). After grafting onto healthy apple rootstock, some plants showed phytoplasma-infection symptoms. Polymerase Chain Reaction (PCR) tests yielded DNA fragments of the expected size for phytoplasmas. DNA sequencing revealed an identity of the 16S rDNA nucleotide sequence of 98-99% with ‘Candidatus Phytoplasma solani’. This phytoplasma species is responsible for losses in European apple orchards and has not been reported in Brazil. According to the Federal Legislation on Plant Protection, the plants were incinerated to avoid the introduction of this exotic pest in Brazil.
Caminhos da história e da memória: a Universidade Aberta da Terceira Idade da UERJ
Authors: Furtado Sandra Regina Sahb , Silva Neusa Cardim da
Published: February 2018

RESUMO Apresenta o Projeto Memória da Universidade Aberta da Terceira Idade da Universidade do Estado do Rio de Janeiro (UnATI/UERJ), que está sendo desenvolvido pelo Centro de Referência e Documentação sobre Envelhecimento (CRDE). O Projeto tem como principal objetivo organizar e preservar a Memória da UnATI, e como objetivos específicos resgatar os documentos históricos e criar uma base de dados com os materiais informacionais indexados e registrados, além de coletar depoimentos orais para compor o acervo. O artigo traz relato do histórico de criação da UnATI/UERJ no cenário da Universidade, citando suas principais ações no campo do envelhecimento. Discorre sobre o CRDE com enfoque na sua origem, atividades e produtos, com destaque para o Projeto. Contextualiza-o tendo como aporte teórico a memória e a história, e como metodologia a revisão de literatura, visitas técnicas, coleta de documentos, sua análise e seu processamento técnico. O modelo UnATI desperta a atenção de instituições e pesquisadores, assim o resgate da sua memória preserva esse modelo e fornece subsídios para outras iniciativas.
Equilíbrio e marcha de idosos residentes em instituições asilares do município de Catanduva, SP
Authors: Lojudice Daniela Cristina , Laprega Milton Roberto , Gardezani Priscila Maria , Vidal Priscila
Published: February 2018

RESUMO O presente trabalho tem como objetivos avaliar o equilíbrio e marcha de idosos institucionalizados e caracterizar os idosos que se apresentaram com alterações no equilíbrio e marcha segundo sexo, faixa etária, estados visual e auditivo. Este estudo, do tipo descritivo e de caráter transversal, foi realizado nas instituições asilares do município de Catanduva (SP), constituído de idosos de ambos os sexos. Os idosos foram responderam primeiramente a um questionário que trazia informações sobre identificação e condições de saúde. O equilíbrio e marcha foram avaliados através da Escala de Equilíbrio e Marcha de Tinetti. Foram avaliados 105 idosos, sendo 62 (59%) do sexo feminino e 43 (41%) do sexo masculino. A idade variou de 60 a 97 anos, com média de 79,2 +- (9,7) anos para o sexo feminino e 73,2 +- (9,3) anos para o sexo masculino. Houve associação entre dificuldade no equilíbrio e marcha e sexo feminino (p=0,003); faixa etária (p= 0,004) e dificuldade na visão (p= 0,008). Não houve diferença entre dificuldade no equilíbrio e marcha e deficiência auditiva. De acordo com os resultados, concluiu-se que entre os idosos residentes em asilos da cidade de Catanduva, os distúrbios do equilíbrio e marcha estão associados à idade avançada, sexo feminino e à deficiência visual.