602 research outputs found

    Desigualdades persistentes e violações sociais ampliadas

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    This text deals with congenital mismatch between substantive equality and capitalism generator currently multiplied social inequalities. Highlights the paradox and the consequences of this multiplication in a scientifically advanced world and indicates two challenges for social policy: a theoretical and another politician. The first in order to understand it and demystify it and, second, to fight it in an adverse scenario. Finally, it indicates possible strategies of resistance against the violation of rights of citizenship that the perverse persistence of inequality causes.Este texto trata da incompatibilidade congênita entre igualdade substantiva e capitalismo gerador de desigualdades sociais, atualmente multiplicadas. Destaca o paradoxo e as consequências dessa multiplicação em um mundo cientificamente avançado e indica dois desafios para a política social: um teórico e outro político. O primeiro, no sentido de entendê-la e desmistificá-la e, o segundo, de combatê-la em um cenário adverso. Finaliza apontando estratégias possíveis de resistências contra a violação dos direitos de cidadania que a persistência perversa da desigualdade provoca

    Acid Decomposition Of Yerba Mate (ilex Paraguariensis) Using A Reflux System For The Evaluation Of Al, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Pb And Zn Contents By Atomic Spectrometric Techniques

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    Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)In the first part of this paper, two acid decomposition procedures for the determination of Al, Ca, Fe, Mg, Mn and Zn contents in yerba mate samples by inductively coupled plasma optical emission spectrometry (ICP OES) were compared. Using a reflux system, the samples were treated with a mixture of HNO3 and H2O2 for 3 hours at 220 degrees C in the digester block. The results from five commercial yerba mate samples were compared with the results obtained from microwave digestion. Good agreement between the procedures at a 95% confidence level was obtained with relative standard deviation (RSD) values lower than 10.0%. The accuracy was evaluated using addition and recovery experiments (80.5 to 112.8%). In the second part, Ca, Cd, Cr, Cu, Fe, K, Mg, Na, Pb and Zn concentrations were evaluated in the yerba mate infusion. The results showed that elements such as Na, K, Mg and Zn are easily transferred to the hot water used for the infusion. For Pb and Cd, the concentrations found in the analyzed samples were lower than the values established by Brazilian legislation.274685693Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [552197/2011-4]Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES

    Acid decomposition of yerba mate (ilex paraguariensis) using a reflux system for the evaluation of Al, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Pb and Zn contents by atomic spectrometric techniques

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    In the first part of this paper, two acid decomposition procedures for the determination of Al, Ca, Fe, Mg, Mn and Zn contents in yerba mate samples by inductively coupled plasma optical emission spectrometry (ICP OES) were compared. Using a reflux system, the samples were treated with a mixture of HNO3 and H2O2 for 3 hours at 220 °C in the digester block. The results from five commercial yerba mate samples were compared with the results obtained from microwave digestion. Good agreement between the procedures at a 95% confidence level was obtained with relative standard deviation (RSD) values lower than 10.0%. The accuracy was evaluated using addition and recovery experiments (80.5 to 112.8%). In the second part, Ca, Cd, Cr, Cu, Fe, K, Mg, Na, Pb and Zn concentrations were evaluated in the yerba mate infusion. The results showed that elements such as Na, K, Mg and Zn are easily transferred to the hot water used for the infusion. For Pb and Cd, the concentrations found in the analyzed samples were lower than the values established by Brazilian legislation274685693CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DO RIO GRANDE DO SUL - FAPERGSSem informação552197/2011-4Sem informaçã

    Effect of air temperature, genetic and period of the day in the frequencies of occurrences and length of time of behavioral expression of broiler breeders

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    Behavioral adjustments may occur fast and with less cost than the physiological adaptations. Considering the social behavior is suggestive that the frequency and the intensity of aggressive interactions, the total social cohesion and the extent of vicious attitudes may be used to evaluate welfare. This research presents an analysis of the interactions between the experimental factors such as temperature, genetic and time of the day in the behavior of female broiler breeders under controlled environment in a climatic chamber in order to enhance the different reaction of the birds facing distinct environmental conditions. The results showed significant differences between the behaviors expressed by the studied genetics presenting the need of monitoring them in real-time in order to predict their welfare in commercial housing, due to the complexity of the environmental variables that interfere in the well being process. The research also concluded that the welfare evaluation of female broiler breeders needs to consider the time of the day during the observation of the behaviors.Ajustes de comportamento podem ocorrer rapidamente e a custo menor do que os ajustes fisiológicos. Considerando o comportamento social, é sugestivo que a freqüência e a intensidade de interações agressivas, o total de coesão social e a extensão de vícios sociais possam ser utilizados para avaliação de bem-estar. Esta pesquisa apresenta uma análise das interações entre os fatores experimentais, como temperatura, linhagem e período do dia, nos comportamentos de matrizes pesadas alojadas em câmara climática, buscando evidenciar as diferentes reações das aves submetidas a distintas condições ambientais. Os resultados encontrados mostraram diferenças significativas entre os comportamentos expressos pelas diferentes linhagens, reforçando a necessidade do monitoramento em tempo real do bem-estar de matrizes pesadas em alojamentos comerciais, dada a complexidade com que as variáveis ambientais interferem no bem-estar. A pesquisa permitiu concluir também que a avaliação do bem-estar de matrizes pesadas deve considerar o período do dia na observação dos comportamentos.59661

    AN ENIGMATIC TOOTH OF ABELISAURIDAE FROM PEIRÓPOLIS PALEONTOLOGICAL SITE (MARÍLIA FORMATION, BAURU GROUP) WITH CHARACTERS OF TROODONTIDADE

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    In this work, the results of an analysis of an isolated tooth of theropod dinosaur, found in the Paleontological Site of Peirópolis, in the state os Minas Gerais, correspondent to the Marília Formation, a component of an important brazilian basin, where relevant fossil assemblages were found. Through the morphological analysis and comparison of the tooth with previous examples, besides the assistance of an extensor database, the sample in question was framed in a family

    AN ENIGMATIC TOOTH OF ABELISAURIDAE FROM PEIRÓPOLIS PALEONTOLOGICAL SITE (MARÍLIA FORMATION, BAURU GROUP) WITH CHARACTERS OF TROODONTIDADE

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    In this work, the results of an analysis of an isolated tooth of theropod dinosaur, found in the Paleontological Site of Peirópolis, in the state os Minas Gerais, correspondent to the Marília Formation, a component of an important brazilian basin, where relevant fossil assemblages were found. Through the morphological analysis and comparison of the tooth with previous examples, besides the assistance of an extensor database, the sample in question was framed in a family

    Blood-stage antiplasmodial activity and oocyst formation-blockage of metallo copper-cinchonine complex

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    In the fight against malaria, the key is early treatment with antimalarial chemotherapy, such as artemisinin-based combination treatments (ACTs). However, Plasmodium has acquired multidrug resistance, including the emergence of P. falciparum strains with resistance to ACT. The development of novel antimalarial molecules, that are capable of interfering in the asexual and sexual blood stages, is important to slow down the transmission in endemic areas. In this work, we studied the ability of the mettalo copper-cinchonine complex to interfere in the sexual and asexual stages of Plasmodium. The tested compound in the in vitro assay was a cinchonine derivative, named CinCu (Bis[Cinchoninium Tetrachlorocuprate(II)]trihydrate). Its biological functions were assessed by antiplasmodial activity in vitro against chloroquine-resistant P. falciparum W2 strain. The mice model of P. berghei ANKA infection was used to analyze the antimalarial activity of CinCu and chloroquine and their acute toxicity. The oocyst formation-blocking assay was performed by experimental infection of Anopheles aquasalis with P. vivax infected blood, which was treated with different concentrations of CinCu, cinchonine, and primaquine. We found that CinCu was able to suppress as high as 81.58% of parasitemia in vitro, being considered a molecule with high antiplasmodial activity and low toxicity. The in vivo analysis showed that CinCu suppressed parasitemia at 34% up to 87.19%, being a partially active molecule against the blood-stage forms of P. berghei ANKA, without inducing severe clinical signs in the treated groups. The transmission-blocking assay revealed that both cinchonine and primaquine were able to reduce the infection intensity of P. vivax in A. aquasalis, leading to a decrease in the number of oocysts recovered from the mosquitoes’ midgut. Regarding the effect of CinCu, the copper-complex was not able to induce inhibition of P. vivax infection; however, it was able to induce an important reduction in the intensity of oocyst formation by about 2.4 times. It is plausible that the metallo-compound also be able to interfere with the differentiation of parasite stages and/or ookinete-secreted chitinase into the peritrophic matrix of mosquitoes, promoting a reduction in the number of oocysts formed. Taken together, the results suggest that this compound is promising as a prototype for the development of new antimalarial drugs. Furthermore, our study can draw a new pathway for repositioning already-known antimalarial drugs by editing their chemical structure to improve the antimalarial activity against the asexual and sexual stages of the parasite
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