7,209 research outputs found

    Planetary nebulae in the inner Milky Way

    Full text link
    New abundances of planetary nebulae located towards the bulge of the Galaxy are derived based on observations made at LNA (Brazil). We present accurate abundances of the elements He, N, S, O, Ar, and Ne for 56 PNe located towards the galactic bulge. The data shows a good agreement with other results in the literature, in the sense that the distribution of the abundances is similar to those works. From the statistical analysis performed, we can suggest a bulge-disk interface at 2.2 kpc for the intermediate mass population, marking therefore the outer border of the bulge and inner border of the disk.Comment: 2 pages, 1 figure, uses iaus.cls, in press, IAU Symp. 265, Chemical abundances in the Universe: Connecting the first Stars to Planets, Ed. K. Cunha, M. Spite, B. Barbu

    Daring a childlike writing : children for philosophy, moral end, and the childhood of conceptions

    Get PDF
    A child arrives as a new world because in her and with her we feel that the whole world can start over. But that is not the only reason. A child also arrives as a new world because her arrival tells us what, being so simple, we had almost forgotten: that the world is not just old and unquestionable. The child doesn’t let us be indifferent; she breaks with conformity and arrives as hope, reeking of the unpredictable. Of questions. A similar arrival to that of a child is that of certain childlike ideas, such as the idea offered by Matthew Lipman when he created “philosophy for children.” We cele-brate his childlike, daring, irreverent, inquiring character, commemorating his birth nearly 50 years ago. With this childlike idea, a new world began—or at least it be-came possible to start—in worlds which were already a little old and stuck in conformity. When those in institutionalized philosophy and education heard about the audacity of welcoming children among their reputable interlocutors in dialogue and thought, they frowned and turned up their noses. Philosophy for children? How come? Childhood in philosophy?info:eu-repo/semantics/publishedVersio

    ISOMORFISMO INSTITUCIONAL EM IESS PÚBLICAS CATARINENSES: UMA ANÁLISE COMPARATIVA DE PRÁTICAS EM EDUCAÇÃO AMBIENTAL

    Get PDF
    As pressões da sociedade em relação à questão ambiental levaram um conjunto bastante grande de organizações a desenvolverem políticas ligadas à educação ambiental. As universidades, organizações inovadoras sustentáveis por excelência, começam a adotar práticas ligadas ao tema. O presente artigo tentar explicar, a luz do isomorfismo institucional se existe similaridade entre as estruturas e formas ligadas a práticas de ensino em educação ambiental entre as duas principais universidades públicas catarinenses. Desenvolveu-se uma pesquisa qualitativa, com fins exploratórios, por estudo de caso e levantamento documental nos sites das universidades, identificando cursos e as disciplinas ligadas à educação ambiental, além de entrevistas com professores ligados a algumas destas disciplinas. Ao final conclui-se que o isomorfismo encontrado caracteriza-se na oferta de algumas disciplinas ligadas à educação ambiental, na sua inserção em novos currículos e novos cursos, sendo tipificados como cognitivo e normativo

    Planetary nebulae as probes for galactic chemical evolution

    Get PDF
    The role of planetary nebulae as probes for the galactic chemical evolution is reviewed. Their abundances throughout the Galaxy are discussed for key elements, in particular oxygen and other alpha elements. The abundance distribution derived from planetary nebulae leads to the establishment of radial abundance gradients in the galactic disk that are important constraints to model the chemical evolution of the Galaxy. The radial gradient, well determined for the solar neighborhood, is examined for distinct regions. For the galactic anticenter in particular, the observational data confirm results from galactic evolution models that point to a decreasing in the gradient slope at large galactocentric distances. The possible time evolution of the radial gradient is also examined comparing samples of planetary nebulae of different ages, and the results indicate that a flattening in the gradient occurred, which is confirmed by some galactic evolution models. The galactic bulge is another important region whose modeling can be constrained by observational results obtained from planetary nebulae. Results derived in the last few years indicate that bulge nebulae have an abundance distribution similar to that of disk objects, however with a larger dispersion.Comment: 8 pages, 6 figures, LaTeX, To be published in the Proceedings of the IAU Symposium 234: Planetary Nebulae in Our Galaxy and Beyon

    The Detection of Anomalous Dust Emission in the Nearby Galaxy NGC 6946

    Get PDF
    We report on the Ka-band (26-40 GHz) emission properties for 10 star-forming regions in the nearby galaxy NGC 6946. From a radio spectral decomposition, we find that the 33 GHz flux densities are typically dominated by thermal (free-free) radiation. However, we also detect excess Ka-band emission for an outer-disk star-forming region relative to what is expected given existing radio, submillimeter, and infrared data. Among the 10 targeted regions, measurable excess emission at 33 GHz is detected for half of them, but in only one region is the excess found to be statistically significant (7σ\approx7\sigma). We interpret this as the first likely detection of so called `anomalous' dust emission outside of the Milky Way. We find that models explaining this feature as the result of dipole emission from rapidly rotating ultrasmall grains are able to reproduce the observations for reasonable interstellar medium conditions. While these results suggest that the use of Ka-band data as a measure of star formation activity in external galaxies may be complicated by the presence of anomalous dust, it is unclear how significant a factor this will be for globally integrated measurements as the excess emission accounts for \la10% of the total Ka-band flux density from all 10 regions.Comment: 6 pages; Accepted to ApJ Letter

    Traditionscapes in Emerging Markets: An Abstract

    Get PDF
    Dalmoro, M., Pinto, D. C., & Nique, W. M. (2019). Traditionscapes in Emerging Markets: An Abstract. In P. Rossi, & N. Krey (Eds.), Finding New Ways to Engage and Satisfy Global Customers: Proceedings of the 2018 Academy of Marketing Science (AMS) World Marketing Congress (WMC) (pp. 277-278). [Chapter 69] (Finding New Ways to Engage and Satisfy Global Customers). Springer. https://doi.org/10.1007/978-3-030-02568-7_69Tradition has been described in consumer studies as a powerful instrument for consumer identity construction even in a globalized consumer culture (Izberk-Bilgin 2012; Varman and Belk 2009; Türe and Ger 2016). In these terms, tradition can perform significant role in contemporary multicultural marketplaces (Cruz et al. 20017), cultural acceptability (Sinha and Sheth 2017), and brand evaluations and choices (Dogerlioglu-Demir et al. 2017). Drawing on these recent studies, we contribute to the literature exploring how consumers use tradition in fostering identity in an emerging market. Particularly, we shift the discussion involving tradition versus globalization to explore the traditionscapes, that is, a fluid consumer’s appropriation of certain traditions as a resource to build their identity at large in emerging markets. To explore this concept empirically, we adopt a multilevel approach involving qualitative and quantitative data collection with South Brazilian consumers connected with gaucho traditions. At the exploratory level, we identify three themes that describe consumers’ appropriation of certain tradition as a resource to build their identity: (1) cultural drives, (2) identity formation, and (3) tradition value. Even that in a symbolic way, tradition allows building a sense of belonging recognized as unique and locally accepted as source of identity. Following it, we observe that tradition serves as an indexical cue useful to deal with globalization flows and to express cultural attachment. At the confirmatory level, we conduct a survey with 600 participants at a gaucho tradition show. Results provide evidences for the qualitative predictions that tradition attachment is a cultural identity process and tradition value is influenced by the three levels of identity (regional, social, cultural). Findings indicate that traditionscapes is a relevant concept to describe the way consumers appropriate certain traditions as a resource to build their identity in emerging markets. We observe yet that consumers want to preserve traditional values in their identity projects not necessarily in opposition to global culture own. Discussions provide novel insights to marketers and local governments in considering the importance of traditionscapes when in emerging markets.authorsversionpublishe

    Flora Süssekind e Júlio Castañon Guimarães ”“: Sobre Augusto de Campos

    Get PDF
    Flora Süssekind e Júlio Castañon Guimarães ”“ Sobre Augusto de Campo

    Exercise influence on immune response

    Get PDF
    ABSTRACT The study of the influence of exercise on immune response is a field in constant grow since the 1970s. The main areas studied are infection of upper respiratory airways in athletes submitted to extenuating exercises, the exercise as a model of stress and the effects of training as an adaptive mechanism to cope with stress. Exercise promotes an imbalance in organic homeostasis, and all of the systems, including the immune system, must adequate their function to this new situation. The responses to exercise can be expressed as acute response, a transitory response to stress and chronic adaptive response, when training provides better conditions for the organism to cope with stress. In both situations the components of the immune system, the cellular and humoral arms of the innate and adaptive systems, are affected by exercise. Not as a rule, one can say that moderate exercise is associated with a better function of the immune system and high intensity exercise in stressful situations is associated with a transitory state of immunodepression.RESUMO O estudo da relação entre o exercício e a resposta imune teve grande impulso a partir da metade da década de 70, tendo como principais áreas de interesse o estudo da infecção de vias aéreas superiores em atletas submetidos a grandes esforços, o exercício como modelo de estresse e a resposta do treinamento como resposta adaptativa frente a situações de estresse. A descrição da interação entre os sistemas imune e neuroendócrino foi de importância capital no desenvolvimento desses estudos. O exercício gerando um desvio da homeostase orgânica leva à reorganização das respostas de diversos sistemas, entre eles o sistema imune. É adequado dividir a resposta ao exercício em resposta aguda, resposta transitória ao estresse e resposta de adaptação crônica, na qual o treinamento capacita o organismo a lidar com o estímulo estressante de maneira mais adequada. Ambas as respostas afetam os diversos componentes do sistema imune, tanto a resposta inata em seu componente celular compreendendo neutrófilos, macrófagos e células natural killer, como em seu componente humoral, proteínas de fase aguda, sistema do complemento e enzimas, como o sistema imune adaptativo, em seu componente celular (linfócitos T e B), como no componente humoral (anticorpos e citocinas). Apesar das incorreções que cometemos quando das generalizações, podemos dizer que, de modo geral, o exercício de intensidade moderada, praticado com regularidade, melhora a capacidade de resposta do sistema imune, enquanto o exercício de alta intensidade praticado sob condições estressantes provoca um estado transitório de imunodepressão.Universidade de São Paulo Instituto de Ciencias Biologicas Departamento de HistologiaUniversidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina (EPM) Disciplina de ImunologiaUNIFESP, EPM, Disciplina de ImunologiaSciEL
    corecore