35 research outputs found

    Avaliação do teste imunocromatográfico ("ICT card test") no diagnóstico da filariose em estudos populacionais

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    This study evaluated the whole blood immunochromatographic card test (ICT card test) in a survey performed in Northeastern Brazil. 625 people were examined by the thick blood film (TBF) and ICT card test. Residents of a non-endemic area were also tested by the whole blood card test and Og4C3. The sensitivity of the ICT card test was 94.7% overall, but lower in females than males, based on the reasonable assumption that TBF is 100% specific. However, since TBF and other methods have unknown sensitivity, the true specificity of the card test is unknown. Nevertheless, it is possible to estimate upper and lower limits for the specificity, and relate it to the prevalence of the disease. In the endemic area, the possible range of the specificity was from 72.4% to 100%. 29.6% of the card tests performed in the non-endemic area exhibited faint lines that were interpreted as positives. Characteristics of the method including high sensitivity, promptness and simplicity justify its use for screening of filariasis. However, detailed information about the correct interpretation in case of extremely faint lines is essential. Further studies designed to consider problems arising from imperfect standards are necessary, as is a sounder diagnostic definition for the card test.Este estudo avaliou o teste imunocromatográfico ("ICT card test") em inquérito de filariose realizado no município de Olinda, Brasil. 625 pessoas foram examinadas pela técnica da gota espessa (GE), e "ICT card test" (ICT). Moradores do município de Campina Grande, Paraíba, área não endêmica, foram examinados pelos testes ICT e Og4C3-ELISA, para verificação da especificidade. A sensibilidade do método foi de 94,7%. O desenho do estudo - que envolveu a acurácia do ICT e do teste de referência (GE), em todos os elementos da amostra, - e a especificidade de 100% da GE permitiram o cálculo correto da sensibilidade. Todavia, como a sensibilidade da GE é desconhecida, a especificidade do ICT é ignorada. É possível, contudo, estimar o limite superior e inferior da especificidade e relacioná-la à prevalência de doença. Na área endêmica, a especificidade do teste variou entre 72,4% e 100,0%. 29,6% dos exames pelo ICT, realizados na área não endêmica, exibiram coloração tênue, tendo sido interpretados como positivos. Algumas características do método, incluindo alta sensibilidade, rapidez e simplicidade de execução justificam sua utilização em rastreamento de áreas endêmicas. Todavia, detalhes acerca da correta interpretação dos resultados com coloração extremamente tênue, parecem de importância fundamental

    ADAGA – ADaptive AGgregation Algorithm for sensor networks

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    Abstract. Algorithms for query processing in Wireless Sensor Networks (WSNs) should be able to handle resource limitations such as memory and battery life. Adaptability has been explored as an alternative approach when dealing with these conditions. Adaptive algorithms can adjust their behavior in response to specific events that take place during data processing. In this paper, we propose an adaptive algorithm for processing in-network aggregation in sensor nodes of a WSN, called ADAGA (ADaptive AGgregation Algorithm for sensor networks). The ADAGA adapts its behavior according to memory and energy usage by dynamically adjusting data-collection and data-sending time intervals. The results obtained through experiments prove the efficiency of ADAGA.

    Efeito crônico do treinamento de força de curta duração em meio líquido nos níveis de força e na capacidade funcional em mulheres com DCNT’s

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    O objetivo deste estudo foi analisar os níveis de força dos membros inferiores e superiores e a capacidade funcional após um treinamento de força agudo em meio líquido nos indivíduos com doenças crônicas não transmissíveis. É esperado ainda, identificar o índice de massa muscular e percentual de gordura em portadores de doenças crônicas não transmissíveis, participantes e não participantes de um programa de treinamento de força na água. Foi randomizada uma amostra de 10 sujeitos com doenças crônicas não transmissíveis em dois grupos: um grupo com intervenção (experimental) e um grupo controle. O treinamento ocorreu em duas semanas, com seis sessões, 11 exercícios, velocidade de 35 bpm monitorados por metrônomo, sessões de 50 minutos. Os resultados apontam que ambos os grupos encontram-se sem diferenças estatisticamente significantes no índice de massa muscular e no percentual de gordura, mas foram encontradas diferenças estatisticamente significantes no teste de capacidade funcional entre os grupos (testes Wilcoxon, p<0,050), com uma tendência do aumento de força nos membros inferiores concomitante ao aumento da capacidade funcional do grupo experimental ao comparar com o grupo controle. Dessa forma, foi verificada a eficácia do protocolo utilizado na capacidade funcional e nos níveis de força dos segmentos inferiores. ABSTRACT Chronic effects of short-term strength training in liquid medium in strength levels and functional capacity in women with DCNT’sThe aim of this study was to analyze the strength levels of the lower and upper limbs and functional capacity after acute resistance training in the water in individuals with chronic diseases. It is expect also identify the body mass index, body fat percentage in patients with diseases chronic non-communicable, participants and non-participants of a strength training program in the water. Was randomized sample of 10 subjects with chronic diseases into two groups: one group with intervention (experimental) and a control group. Training took place in two weeks, with six sessions, 11 exercises, speed of 35 bpm monitored by a metronome, 50-minute sessions. The results show that both groups are not statistically significant differences in body mass index and body fat percentage, but statistically significant differences were found in the functional capacity test between groups (Wilcoxon test, p<0.050), with a trend the power increase in the lower concomitant members to increase the functional capacity of the experimental group vs. the control group. Thus, the efficiency of the protocol used was checked in the functional capacity and the power levels of the lower segments

    Grander system: A new technology to reduce surface tension of adhesive systems in dentistry

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    Background. Reduced surface tension of liquids results in higher surface wetting ability and diffusivity by the substrate. Objectives. The objective of this study was to evaluate the influence of the Grander Technology in reducing the surface tension of adhesive systems. Methods. Two adhesive systems (self-etch and total-etch) were modified by physical contact with the Grander system Flexible unit to revitalize water, for 48 h. Surface tension of adhesive systems and water in normal and grander-modified conditions was measured with a goniometer. Results. The results showed a reduction of surface tension for all conditions grander-modified between 3-15%. Conclusions. Grander Technology was effective in reducing the surface tension of the Single Bond and Clearfil SE Bond adhesive systems. Clinical significance. Grander technology was employed to restructure the molecular structure of water-based adhesive systems, which can increase their wetness capacity and therefore ensure a greater diffusibility

    Dentin bond strength: influence of Er:YAG and Nd:YAG lasers

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    The aim of this study was to investigate the effects of Er:YAG and Nd:YAG lasers on the shear bond strength of composite resin to dentin. The coronal portion of 56 human molars was divided into three parts, and the dentin thickness was standardized at 2 mm. A 3-mm hole was marked in the center of each tooth with sealing tape paper. The specimens (n = 14) were then divided into four groups: (1) acid etching + Single Bond (SB) (control), (2) acid etching + SB + Nd:YAG laser irradiation (before adhesive curing), (3) thermal etching with the Er:YAG laser + SB, and (4) thermal etching with the Er:YAG laser + SB + Nd:YAG laser irradiation (before adhesive curing). A composite resin cylinder was built into the delimited area for conducting the shear bond strength test on the universal testing machine. The means ± standard deviations were: group 1, 17.05 ± 4.15 MPa; group 2, 16.90 ± 3.36 MPa; group 3, 12.12 ± 3.85 MPa; and group 4, 12.92 ± 2.73 MPa. Groups 1 and 2 presented significantly higher values than groups 3 and 4. It was concluded that conventional etching with 37% phosphoric acid yielded significantly higher bond strength values compared to thermal etching with the Er:YAG laser. The Nd:YAG laser did not significantly influence the bond strength

    Risk factors associated with american cutaneous leishmaniasis in an endemic area of Brazil

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    Submitted by Adagilson Silva ([email protected]) on 2017-04-26T14:56:39Z No. of bitstreams: 1 0036-4665-rimtsp-58-e86.pdf: 117446 bytes, checksum: 70532d600684083cf9be317715aafecf (MD5)Approved for entry into archive by Adagilson Silva ([email protected]) on 2017-04-26T15:23:24Z (GMT) No. of bitstreams: 1 0036-4665-rimtsp-58-e86.pdf: 117446 bytes, checksum: 70532d600684083cf9be317715aafecf (MD5)Made available in DSpace on 2017-04-26T15:23:24Z (GMT). No. of bitstreams: 1 0036-4665-rimtsp-58-e86.pdf: 117446 bytes, checksum: 70532d600684083cf9be317715aafecf (MD5) Previous issue date: 2016-12-08Fundação Oswaldo Cruz. Instituto Aggeu Magalhães. Recife, PE, Brasil / Universidade Federal de Pernambuco. Hospital da Clínicas. Health Sciences Center. Graduate Program in Tropical Medicine. Recife, PE, Brazil.Fundação Oswaldo Cruz. Instituto Aggeu Magalhães. Recife, PE, Brasil.Fundação Oswaldo Cruz. Instituto Aggeu Magalhães. Recife, PE, Brasil / Universidade Federal de Pernambuco. Hospital da Clínicas. Health Sciences Center. Graduate Program in Tropical Medicine. Recife, PE, Brazil.Fundação Oswaldo Cruz. Instituto Aggeu Magalhães. Recife, PE, Brasil.Universidade Federal de Pernambuco. Hospital da Clínicas. Health Sciences Center. Graduate Program in Tropical Medicine. Recife, PE, Brazil.Fundação Oswaldo Cruz. Instituto Aggeu Magalhães. Recife, PE, Brasil.Universidade Federal de Pernambuco. Hospital da Clínicas. Health Sciences Center. Graduate Program in Tropical Medicine. Recife, PE, Brazil.Brazil is among the top five countries worldwide regarding the number of cases of leishmaniasis, which are present in all of the regions of the country. The northeastern region continues to have higher numbers of cases every year and in the state of Pernambuco, 34% of the municipalities are endemic for this disease. The diversity of vectors, reservoirs and etiological agents, in association with socioeconomic and environmental conditions, gives rise to factors that can modify the behavior of American cutaneous leishmaniasis. Consequently, the aim of the present study was to determine the risk factors associated with American cutaneous leishmaniasis in the municipality of Timbaúba, Brazil. A case-control study was conducted. A validated questionnaire was used for data collection. The study included 58 cases and 174 controls, and they were serologically diagnosed at the Oswaldo Cruz Foundation (FIOCRUZ). Our results showed that some factors were associated with American cutaneous leishmaniasis: biological (gender), economic (work activity, hours spent away from home and water supply) and peridomestic (presence of animals). In our study, the associations of these variables with leishmaniasis were linked to precarious housing conditions and poverty, which are parameters that can be managed in order to prevent the disease in this region

    Avaliação de indicador sócio-ambiental utilizado no rastreamento de áreas de transmissão de filariose linfática em espaços urbanos

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    O conceito de espaço socialmente organizado, subsidiado por novas técnicas de análise, mapeamento e espacialização da ocorrência de eventos, tem orientado desenvolvimentos metodológicos inovadores no campo das intervenções de saúde pública. Este estudo teve por objetivo avaliar a utilização de um indicador sócio-ambiental, construído através da metodologia de aplicação de escores, na estratificação do Município de Olinda, Pernambuco, em áreas com diferentes riscos de transmissão da filariose bancroftiana. Procedeu-se ao mapeamento das áreas, localização dos domicílios amostrados e identificação de todos os moradores com idade entre 5 e 65 anos para realização do inquérito parasitológico. Dentre as 3.232 pessoas examinadas, 42 foram positivas, obtendo-se prevalência de microfilaremia de 1,3%. A análise estatística global da distribuição dos casos mostrou evidências de agregação espacial. Nos dois estratos de mais alto risco de transmissão residiam 85,7% dos positivos. A alta sensibilidade do indicador proposto justifica a sua utilização para o planejamento e execução de intervenções ao predizer o local de ocorrência da maioria dos casos de filariose

    Anuário do Observatório da LGPD da Universidade de Brasília : análise setorial dos impactos da LGPD no Brasil (volume 2)

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    É com um forte sentimento de missão cumprida que apresentamos o Volume 2 do Anuário do Observatório da LGPD da Universidade de Brasília (Unb). Esta obra concretiza os resultados de um árduo trabalho de pesquisa acadêmica na temática da proteção de dados. Em uma conjuntura de acirrada vigilância sobre os dados pessoais dos indivíduos, debater a privacidade e a proteção de dados é uma demanda que se impõe. Nesse sentido, o presente anuário se estabelece como uma realização relevante sobre o tema.Faculdade de Direito (FD
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