48 research outputs found

    Crenças e atitudes em relação à fluorose dentária de jovens em região rural do Brasil

    Get PDF
    OBJECTIVE: To understand beliefs and attitudes about fluorosis among young people living in a rural area. METHODOLOGICAL PROCEDURES: Qualitative study consisting of semi-structured interviews with 23 adolescents with dental fluorosis, 14 teachers and three health authorities in the city of São Francisco, Southeastern Brazil, in 2002. Content analysis and social representation theory were applied. ANALYSIS OF RESULTS: The organoleptic characteristics of carbonates that affect groundwater (salty flavor, whitish coloration, and turbidity) associated with negative aspects of household use of this water are considered a cause of mottled enamel. Even after contact with researchers who investigated this phenomenon and helped find a solution for this condition, the local population is still unwilling to accept fluoride as the cause of the problem and does not fully agree to use water from other sources because they are afraid of the quality of water. CONCLUSIONS: Misperceptions of the causes of dental fluorosis and water treatment costs compromise the implementation of uncontaminated surface water supplies. Health education strategies are required in parallel with solutions for securing water supply in drought-ravaged areas.OBJETIVO: Comprender creencias y actitudes con relación a la fluorosis dentaria de jóvenes residentes en región rural de Brasil. MÉTODOS: Estudio cualitativo en que fueron realizadas entrevistas semi-estructuradas con 23 adolescentes con fluorosis dentaria, 14 profesores y tres gestores públicos en el municipio de Sao Francisco, en Sureste de Brasil, en 2002. Fueron empleadas la técnica de análisis de contenido y la teoría de las representaciones sociales. RESULTADOS: Por las características organolépticas que imprime al agua (sabor salado, coloración blanquecina y turbidez) y su asociación con aspectos negativos relacionados al uso doméstico, el carbonato es considerado la causa de la fluorosis por adolescentes y profesores. Aún posterior al contacto con científicos que investigaron el fenómeno y que participaron de su solución, la población continúa resistiendo en aceptar el flúor como causa del problema y no concuerda plenamente con el uso de agua de otras fuentes por dudar de su calidad. CONCLUSIONES: Percepciones equivocadas con relación a las causas de la fluorosis dentaria y la dificultad en costear el tratamiento del agua comprometen la implantación del suplemento de agua de superficie no contaminada. Estrategias de educación en salud deben ser implementadas paralelamente a soluciones para captación de agua de fuentes alternativas no contaminadas en localidades afectadas por la seca.OBJETIVO: Compreender crenças e atitudes em relação à fluorose dentária de jovens residentes em região rural do Brasil. PROCEDIMENTOS METODOLÓGICOS: Estudo qualitativo em que foram realizadas entrevistas semi-estruturadas com 23 adolescentes com fluorose dentária, 14 professores e três gestores públicos no município de São Francisco, MG, em 2002. Foram empregadas a técnica de análise de conteúdo e a teoria das representações sociais. ANÁLISE DOS RESULTADOS: Pelas características organolépticas que imprime à água (sabor salgado, coloração esbranquiçada e turbidez) e sua associação com aspectos negativos relacionados ao uso doméstico, o carbonato é considerado a causa da fluorose por adolescentes e professores. Mesmo após o contato com pesquisadores que investigaram o fenômeno e que participaram da sua solução, a população continua a resistir em aceitar o flúor como causa do problema e não concorda plenamente com o uso de água de outras fontes por duvidar de sua qualidade. CONCLUSÕES: Percepções equivocadas em relação às causas da fluorose dentária e a dificuldade em custear o tratamento da água comprometem a implantação de suprimento de água de superfície não contaminada. Estratégias de educação em saúde devem ser implementadas paralelamente a soluções para captação de água de fontes alternativas não contaminadas em localidades afetadas pela seca

    Avaliação do potencial fotoprotetor dos óleos essenciais e extratos etanólicos de aniba canelilla (h.b.k) mez / Evaluation of the photoprotective potential of the essential oils and ethanolic extracts of aniba canelilla (h.b.k) mez

    Get PDF
    O protetor solar é uma loção que ajuda a proteger a pele da radiação ultravioleta do sol. Assim, há dois tipos de filtros solares; os químicos (protetores solares) que absorvem a radiação UV antes de penetrar nas camadas da pele; e os físicos (bloqueadores solares) que refletem e espalham esse tipo de radiação. Dessa maneira, o presente trabalho teve como objetivo avaliar a atividade fotoprotetora dos óleos essenciais e extratos de Aniba canelilla, fazendo o uso do método espectrofotométrico de Mansur; também foi realizada uma triagem fitoquímica qualitativa preliminar para determinar a presença de polifenóis e alcaloides, compostos característicos de plantas que absorvem a radiação UV. Na concentração utilizada e padronizada, o extrato bruto das folhas foi o que apresentou maior FPS, sendo assim será realizado um estudo mais detalhado em relação a sua composição química para que seus constituintes possam ser isolados e identificados para posteriormente serem empregados em formulações de filtro solar.

    BRS SCS BELLUNA – um novo cultivar de banana para processamento e consumo fresco

    Get PDF
    The new banana cultivar, BRS SCS Belluna (AAA), was developed by the Embrapa and Epagri banana breeding programs for processing and fresh consumption. It is noteworthy differentiated nutritional qualities, since its fruits are rich in fiber and have lower carbohydrate and caloric content when compared to fruits of the most traded subgroups in the country, Prata and Cavendish. ‘BRS SCS Belluna’ is also resistant to Panama disease and to Sigatoka disease complex, major plant health problems in Brazil. The cultivar has yield potential up to 40t ha-1 under favorable environmental conditions. Thus, it is recommended to plant the 'BRS SCS Belluna' in the country, highlighting the state of Santa Catarina, where the studies were conducted.BRS SCS Belluna (AAA) é um novo cultivar de banana desenvolvido pelos programas de melhoramento de bananeira da Embrapa e da Epagri. Destacam-se neste cultivar qualidades nutricionais diferenciadas, uma vez que as suas frutas são ricas em fibras e apresentam menores conteúdos de carboidratos e de valores calóricos quando comparadas às frutas dos subgrupos mais comercializados no país, Prata e Cavendish. O cultivar BRS SCS Belluna é resistente ao Mal do Panamá e ao complexo de Sigatoka, principais problemas fitossanitários da bananicultura no Brasil. O cultivar ainda apresenta uma produtividade médiaque pode chegar a 40t ha-1 em condições ambientais favoráveis. Desta forma, recomenda-se o plantio do ‘BRS SCS Belluna’ no país, destacando-se o estado de Santa Catarina, local onde foram realizados os estudos

    Screening of Strongyloides infection using an ELISA test in transplant candidates

    Get PDF
    OBJECTIVES: Hyperinfection or disseminated strongyloidiasis has been frequently reported after transplants and is related to high mortality. This study aimed to screen for strongyloidiasis using serological diagnoses in transplant candidates. METHODS: An ELISA test was performed with filariform larvae of Strongyloides venezuelensis as a source of antigen. RESULTS: In the serum from transplant candidates, anti-Strongyloides IgG antibodies were detected in 35/150 (23.3%) samples by soluble fractions in phosphate buffered saline (PBS), 31/150 (20.7%) samples by soluble fractions in Tris-HCl, 27/150 (18.0%) samples by membrane fractions in PBS and 22/150 (14.7%) samples by membrane fractions in Tris-HCl. CONCLUSIONS: The present results suggest the ELISA test, ideally using soluble fractions of filariform larvae S. venezuelensis in PBS, as an additional strategy for the diagnosis of strongyloidiasis in transplant candidates

    Pervasive gaps in Amazonian ecological research

    Get PDF
    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Pervasive gaps in Amazonian ecological research

    Get PDF

    Pervasive gaps in Amazonian ecological research

    Get PDF
    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost
    corecore