1,441 research outputs found

    Percolation approach to quark gluon plasma in high energy pp collisions

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    We apply continuum percolation to proton-proton collisions and look for the possible threshold to phase transition from confined nuclear matter to quark gluon plasma. Making the assumption that J/Psi suppression is a good signal to the transition, we discuss this phenomenon for pp collisions, in the framework of a dual model with strings.Comment: 8 pages, 3 figure

    Radiopacity Of Glass-ionomer/composite Resin Hybrid Materials.

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    This study visually compared the radiopacity of seven restorative materials (3 resin-modified glass-ionomer cements, 3 polyacid-modified composite resins, and 1 conventional glass-ionomer cement) to a sound tooth structure sample, and an aluminium stepwedge. All hybrid materials were more radiopaque, except for one resin-modified glass-ionomer cement, than both the tooth structure and conventional glass-ionomer cement.122858

    Personal protective strategies for dengue disease: simulations in two coexisting virus serotypes scenarios

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    Dengue fever is a common mosquito-borne viral infectious disease in the world and is widely spread, especially in tropical and subtropical regions. At this moment, one of the best ways to fight the disease is to prevent mosquito bites. In this study, we present a mathematical model that carefully considers personal protection for humans. It is an epidemiological model that translates the dengue disease through a system of differential ordinary equations which takes in consideration the dynamics of the disease between human and mosquito populations. This model incorporates a parameter that simulates personal protection measures, namely insect repellent, special clothes, or bed nets, and a parameter that asserts the effectiveness of public awareness to the importance of using personal protective equipment. In 2012 there was a dengue disease outbreak in Madeira Island, in Portugal, and this study not only tries to predict what could happen if a second outbreak occurs, where it is considered that there are two serotypes of Dengue disease, but also tries to predict the effects and the importance of taking personal protection measures. The results show that the level of personal measures and the time that people are compelled to use them have a significant impact to prevent dengue disease.publishe

    Sensory and physicochemical characterization of Citrus, Erica and Lavandula honeys from Castelo Branco

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    In this study samples of the monofloral honeys more common in Castelo Branco region were tested: Eucalyptus ssp., Erica spp. and Lavandula spp. Evaluation of unifloral conformity was carried out by laboratorial pollen analysis

    Exercise Training On Cardiovascular Diseases: Role Of Animal Models In The Elucidation Of The Mechanisms

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    Cardiovascular diseases, which include hypertension, coronary artery disease/myocardial infarction and heart failure, are one of the major causes of disability and death worldwide. On the other hand, physical exercise acts in the prevention and treatment of these conditions. In fact, several experiments performed in human beings have demonstrated the efficiency of physical exercise to alter clinical signals observed in these diseases, such as high blood pressure and exercise intolerance. However, even if human studies demonstrated the clinical efficiency of physical exercise, most extensive mechanisms responsible for this phenomenon still have to be elucidated. In this sense, studies using animal models seem to be a good option to demonstrate such mechanisms. Therefore, the aims of the present study are describing the main pathophysiological characteristics of the animal models used in the study of cardiovascular diseases, as well as the main mechanisms associated with the benefits of physical exercise.2

    A universidade, a escola e as necessidades especiais: como melhorar? Como contribuir?

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    Um dos principais objetivos de qualquer programa educacional de governo é educar os cidadãos para serem comprometidos com toda asociedade. Para garantir o acesso a todos à educação, os professores precisam atender com qualidade todos os alunos, inclusive aqueles comnecessidades especiais. No entanto, a falta de informação e formação profissional continua sendo ainda um dos principais obstáculos paraalcançar este objetivo. A Escola de Inclusão é um programa de extensão de uma universidade federal brasileira e aborda diferentes áreas(ex: direitos humanos, educação e saúde), estimulando a interação de professores e licenciandos. Seus objetivos incluem a produção demateriais de ensino inclusivos e tecnologia educacional, a formação continuada de professores e a criação de conhecimento e de condiçõesde acessibilidade para os alunos com necessidades especiais. Neste trabalho o nosso objetivo foi analisar brevemente a estratégia deste programaque considera os profissionais de educação, os estudantes de graduação (licenciandos) e alunos com necessidades especiais, comoo melhor público para a construção e/ou avaliação do seu material didático. Interessantemente, a nossa análise qualitativa sobre os relatosde professores, alunos de graduação e um estudante do ensino médio cego, que participaram de edições desse programa, reforçam queprojetos de universidades podem ser capazes de contribuir para a formação de profissionais, de alunos de graduação e de ensino médio,enquanto aproximam o público-alvo da perspectiva do professor. Esta iniciativa também sugere que os alunos com necessidades especiaispodem participar ativamente de sua própria educação se as instituições aprenderem a estimulá-los a um comportamento pró-ativo

    Water quality on small ruminants’ dairy farms in Castelo Branco region

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    The importance of providing quality water for cleaning milking machines and other equipment is perhaps one of the most overlooked factors in ensuring milk quality on most dairy farms. Water for cleaning in the dairy barn is used for different situations, including for the process of milking, which requires cleaning and disinfection of the milking equipment, the milking parlour, and the milk cooling tank. Many factors on dairy farms can contribute to contamination of the raw milk, and one of the major factors responsible for this contamination is the water used to clean the milking and storage equipment.This work was financially supported by QRural Research Unit/IPCB and CERNAS-IPCB (UIDB/00681/2020, FCT).info:eu-repo/semantics/publishedVersio
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