1,054 research outputs found

    A mastite em ovinos de corte afeta os ganhos de peso dos cordeiros?.

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    O Brasil possui um rebanho ovino de aproximadamente quinze milhões de animais que apresenta tendência de crescimento devido à elevação da demanda e consequente valorização da carne, o que torna a ovinocultura de corte uma atividade lucrativa. A preocupação com a mastite aumentou em relação a rebanhos destinados à produção de carne, pelo descarte prematuro das ovelhas com anormalidades de úbere e a redução do ganho de peso diário (GPD) das crias. A forma subclínica da doença pode acarretar menor taxa de crescimento e maior mortalidade dos cordeiros, pela redução da concentração de imunoglobulinas no soro e da produção de leite. Este trabalho teve como objetivo comparar os GPDs de animais oriundos de mães sadias com GPDs de crias de mães doentes em dois rebanhos localizados no Estado de São Paulo

    Estafilococos resistentes à oxacilina isolados em casos de mastite subclínica em ovinos.

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    Bactérias do gênero Staphylococcus estão entre os principais agentes causadores da mastite ovina. Um dos maiores entraves ao tratamento dos animais doentes são cepas resistentes aos antimicrobianos empregados. A pesquisa do gene mecA nos estafilococos é um instrumento auxiliar para a determinação de aspectos epidemiológicos da doença. Este trabalho teve por objetivo investigar a resistência à oxacilina em estafilococos coagulase-negativos isolados no leite de ovelhas com mastite subclínica. Foram analisadas 448 amostras de leite de dois rebanhos. Os micro-organismos isolados foram submetidos previamente a testes de sensibilidade a antibióticos in vitro a partir da técnica de difusão em disco. Naqueles resistentes à oxacilina nestes testes efetuou-se a pesquisa do gene mecA, com a extração do DNA cromossômico por meio da técnica de extração fenol-clorofórmio. Os estafilococos coagulase-negativos apresentaram resistência à oxacilina e a presença do gene mecA foi detectada em quatro isolados, que também apresentaram características de multirresistência. Tais achados reforçam a importância deste grupo de micro-organismos na etiologia da mastite subclínica em ovinos e abre perspectivas para futuras pesquisas para a investigação da epidemiologia da doença

    Chemical Characterization and Source Apportionment of Household Fine Particulate Matter in Rural, Peri-urban, and Urban West Africa

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    Household air pollution in sub-Saharan Africa and other developing regions is an important cause of disease burden. Little is known about the chemical composition and sources of household air pollution in sub-Saharan Africa, and how they differ between rural and urban homes. We analyzed the chemical composition and sources of fine particles (PM2.5) in household cooking areas of multiple neighborhoods in Accra, Ghana, and in peri-urban (Banjul) and rural (Basse) areas in The Gambia. In Accra, biomass burning accounted for 39–62% of total PM2.5 mass in the cooking area in different neighborhoods; the absolute contributions were 10–45 μg/m3. Road dust and vehicle emissions comprised 12–33% of PM2.5 mass. Solid waste burning was also a significant contributor to household PM2.5 in a low-income neighborhood but not for those living in better-off areas. In Banjul and Basse, biomass burning was the single dominant source of cooking-area PM2.5, accounting for 74–87% of its total mass; the relative and absolute contributions of biomass smoke to PM2.5 mass were larger in households that used firewood than in those using charcoal, reaching as high as 463 μg/m3 in Basse homes that used firewood for cooking. Our findings demonstrate the need for policies that enhance access to cleaner fuels in both rural and urban areas, and for controlling traffic emissions in cities in sub-Saharan Africa

    The Elephant Queen: Can a nature documentary help to increase tolerance towards elephants?

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    Conflict between humans and elephants is one of the more complex examples of human‐wildlife conflict, a key challenge for wildlife conservation. While interventions exist to separate humans from elephants, few exist aimed at bringing the two species closer together. This study assesses if a natural history film, The Elephant Queen (TEQ), makes communities living around elephants more tolerant of conflict with elephants. Questionnaires and interviews were conducted before and after seeing the film screened on a mobile cinema in Southern Kenya. A double robust ordinal regression analysis using 357 matching specifications to measure the effect size of viewing TEQ on the six criteria identified as being drivers of tolerance of a wild animal by the Hazard Acceptance model. This study found that students aged between 16 and 18 gained knowledge (mean effect size = 0.27) and affection (mean effect size = 0.17) towards elephants and felt the benefits of elephants more keenly (mean effect size = 0.26) following viewing TEQ. Community members aged between 16–80 also gained knowledge (mean effect size = 0.21) and saw the benefits of elephants (mean effect size = 0.15) but felt the costs of living with elephants more profoundly after viewing TEQ (mean effect size = −0.11). After 90 days a follow‐up survey also showed a significant increase in community “affection” towards elephants (mean effect size = 0.11), however the costs, benefits and knowledge gained had been reduced to a statistically insignificant level compared to baseline. Our results suggest that natural history films can serve as a valuable tool in inspiring young minds. When shown to an adult audience, changes were more nuanced and some of the changes were short lived (<3 months). Read the free Plain Language Summary for this article on the Journal blog

    Attachment goes to court: child protection and custody issues

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    Attachment theory and research are drawn upon in many applied settings, including family courts, but misunderstandings are widespread and sometimes result in misapplications. The aim of this consensus statement is, therefore, to enhance understanding, counter misinformation, and steer family-court utilisation of attachment theory in a supportive, evidence-based direction, especially with regard to child protection and child custody decision-making. The article is divided into two parts. In the first, we address problems related to the use of attachment theory and research in family courts, and discuss reasons for these problems. To this end, we examine family court applications of attachment theory in the current context of the best-interest-of-the-child standard, discuss misunderstandings regarding attachment theory, and identify factors that have hindered accurate implementation. In the second part, we provide recommendations for the application of attachment theory and research. To this end, we set out three attachment principles: the child’s need for familiar, non-abusive caregivers; the value of continuity of good-enough care; and the benefits of networks of attachment relationships. We also discuss the suitability of assessments of attachment quality and caregiving behaviour to inform family court decision-making. We conclude that assessments of caregiver behaviour should take center stage. Although there is dissensus among us regarding the use of assessments of attachment quality to inform child custody and child-protection decisions, such assessments are currently most suitable for targeting and directing supportive interventions. Finally, we provide directions to guide future interdisciplinary research collaboration

    El Apego Va a Juicio: Problemas de Custodia y Protección Infantil1

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    Attachment theory and research are drawn upon in many applied settings, including family courts, but misunderstandings are widespread and sometimes result in misapplications. The aim of this consensus statement is, therefore, to enhance understanding, counter misinformation, and steer family-court utilisation of attachment theory in a supportive, evidence-based direction, especially with regard to child protection and child custody decision-making. This article is divided into two parts. In the first part, we address problems related to the use of attachment theory and research in family courts, and discuss reasons for these problems. To this end, we examine family court applications of attachment theory in the current context of the best-interest-of-the-child standard, discuss misunderstandings regarding attachment theory, and identify factors that have hindered accurate implementation. In the second part, we provide recommendations for the application of attachment theory and research. To this end, we set out three attachment principles: the child’s need for familiar, non-abusive caregivers; the value of continuity of good-enough care; and the benefits of networks of attachment relationships. We also discuss the suitability of assessments of attachment quality and caregiving behaviour to inform family court decision-making. We conclude that assessments of caregiver behaviour should take center stage. Although there is dissensus among us regarding the use of assessments of attachment quality to inform child custody and child-protection decisions, such assessments are currently most suitable for targeting and directing supportive interventions. Finally, we provide directions to guide future interdisciplinary research collaboration

    A dimensão pulsional do sensível: elaborações acerca da percepção em Renaud Barbaras

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    Neste artigo, analisamos o trabalho teórico realizado por Renaud Barbaras a partir de seu propósito de destacar e desenvolver a potencialidade da teoria husserliana da percepção, fundamentada na doutrina de doação perceptiva por perfis. Centramo-nos principalmente em sua obra intitulada O desejo e a distância: introdução a uma fenomenologia da percepção. Destacamos a descrição, operada pelo autor, do movimento vital como desejo e a caracterização do sujeito da percepção como vivente. Sob esta condição, emerge a formulação da prioridade de uma dimensão qualificada por Barbaras como "pulsional" frente à dimensão objetivante da epistemologia clássica da relação sujeito-objeto. Sinalizamos que, para o autor, estes remanejamentos conduzem à necessidade de pensar o corpo, a percepção e o movimento com base na categoria de vida

    The Reference Site Collaborative Network of the European Innovation Partnership on Active and Healthy Ageing

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