Dieta do ouriço-branco, Tripneustes ventricosus (Lamarck, 1816), no Arquipélago de Fernando de Noronha, PE

Sea urchins are benthic macroinvertebrates that inhabit shallow coastal waters in tropical and temperate zones. Urchins are usually classified as generalists or omnivores as they can adjust their diet according to the food resources available in the environment. Due to the strong grazing pressure they may exert, urchins have an important role in marine ecosystems, occupying different trophic levels and stimulating the intensification of the dynamics of communities where they occur. In 2004, a monitoring program focused on the population dynamics of the white sea urchin, Tripneustes ventricosus, has been initiated in the Fernando de Noronha Archipelago. At the same time, a surprisingly lack of information on the species biology has been noted, despite their wide geographical distribution and economic importance in many parts of its range. Hence, this work was developed to provide information on the feeding habits of T. ventricosus in the archipelago. Ten specimens were collected between December 2006 and July 2007 at two sites of the archipelago, Air France and Sueste Bay for biometrics and analysis of gut contents. Test diameters ranged from 9.19 cm (± 1.1) to 10.08 cm (± 0.58). Calculated stomach repletion index (IRE) was higher (p <0.05) in the Air France site and also during January and July. The IRE was not correlated to the gonad index. Fifteen different species of algae were detected in a total of 120 stomachs examined: 4 Chlorophytas, 4 Phaeophytas and 6 Rhodophytas. Food diversity (p <0.05) was higher in December 2006 and January 2007. Although several items had a high frequency of occurrence, they were low represented in terms of weight, and consequently, had a low level of relative importance. The brown algae Dictyopteris spp and Dictyota spp, followed by the green algae Caulerpa verticillata accounted for the greatest importance in T. ventricosus diet, comprising about 90% of the consumed items

Coordenação entre as respostas da catalase e da ascorbato peroxidade em folhas de feijão caupi submetidas a diferentes fontes de peróxido de hidrogênio

The plants are often exposed to variations in environmental conditions that may trigger metabolic disturbances leading to a consequent loss in productivity of crops. These stressful conditions usually induce an accumulation of reactive oxygen species (ROS) in the cell, a condition known how oxidative stress. Among these species, hydrogen peroxide (H2O2) is an important molecule involved in numerous signaling mechanisms. The present study aimed to understand the relationship between the different enzymatic mechanisms of elimination of H2O2 by catalase (CAT) and ascorbate peroxidase (APX) in leaf tissues of seedlings of the species Vigna unguiculata L. Walp, under conditions of oxidative stress induced by application of CAT inhibitor, 3-amino-1,2,4-triazole (3-AT), and H2O2 itself on the roots. Three experiments were conducted. The first experiment was performed applying the compound 3-AT (5 mM) during the time (hours). In the second experiment, seedlings were exposed to different concentrations of H2O2 (2.5, 5.0, 7.5, 10 mM) for 48 h. The third strategy included the pre-treatment with H2O2 (2.5 mM) for 24 h, followed by subsequent treatment with the inhibitor 3-AT and recovery control condition. Treatment with 3-AT causes a strong inhibition of CAT activity in leaf tissues accompanied by an increase of activity of APX. However a decrease in oxidative damage to lipids is not observed as indicated by TBARS. It was observed that activity of APX is directly linked to the content of peroxide. Inductions in the activities of CAT and APX were observed mainly in the seedlings treated with 2.5 mM H2O2. This can be associated with a decrease in oxidative damage to lipids. In contrast, one same tendency was not observed in treatments with higher concentrations of this ROS. These results suggest that the concentration of 2.5 mM H2O2 can induce responses antioxidants later in seedling cowpea. This concentration when applied as pre-treatment for 24 h promoted an induction systems removers CAT and APX, both in activity and in terms of gene expression. However this increment was not observed in the recovered plants and the plants subsequently subjected to 3-AT. Additionally, the pretreatment was not sufficient to attenuate the inhibition of CAT activity and oxidative damage to lipids caused by the subsequent application of this inhibitor. The results showed that the application of 3-AT and H2O2 in the root systems of seedlings of cowpea promote changes in the parameters analyzed in leaf tissues that indicate a direct response to the presence of these factors or systemic signaling mecanisms. H2O2 appears to activate the responses of two antioxidant systems in this study thar does not promote greater protection in case of additional treatment with 3-AT. This demonstrates the importance of the CAT system. In this work, complete results indicate that there is a difference between the signaling and the effects caused by exposure to H2O2 and by treatment with 3-AT

Contribuição da catodoluminescência para o entendimento da diagênese da formação Jandaíra: áreas do campo de petróleo da fazenda Belém e Lajedo do Rosário

The general objective of this study was to contribute to the understanding of the chemical evolution of fluids that percolate through carbonate rocks of the Jandaíra Formation. The oxidation and reduction conditions in which grains, source and cement were formed was investigated using the cathodoluminescence technique (CL). The study area is located in the west part of the Potiguar Basin (Fazenda Belém field) and Rosário Ledge (Felipe Guerra municipality, State of Rio Grande do Norte, Brazil). The analysis of thin sections of carbonate rocks under CL revealed that grains (allochemical or not) and diagenetic products (micritization, dolomitization, neomorphism and cementation) exhibit since absence of luminescence the various luminescence colors (yellow, orange, red, brown, and blue) in a variety of intensities. As pure calcite shows dark blue luminescence, the occurrence of different luminescence colors in calcite crystals suggest one or more punctual crystal defects such as free electron, free space and impurity. The dyeing of thin sections with alizarin and potassium ferrocyanide revealed the absence of ferrous carbonate in the different lithotypes of Jandaíra Formation. Therefore, the different colors and intensities of CL observed in these rocks are probably caused by the presence of ion activators such as Mn2+ and is not an activator/inhibitor combination. In the same way, the absence of luminescence is very probably caused by the absence of activator ions and not due to the low concentration of inhibitor ions such as Fe2+. The incorporation of Mn2+ in the different members of the Jandaíra Formation must have been controlled by the redox state of the depositional environment and diagenesis. Therefore, it is possible that the luminescent members have been formed (e.g.,ooids) or have been modified (gastropod neomorphism) under reduction conditions in the depositional environments, in subsurface during the burial, or, in the case of Rosario Ledge samples , during the post-burial return to surface conditions. As regards the sudden changes from low to moderate and to strong luminescence, these features should indicate the precipitation of a fluid with chemical fluctuations, which formed the frequent zonations in the block cement of the Rosario Ledge samples. This study suggests that the different intensities and colors of CL should be correlated with the Mn2+ and Fe2+ contents, and stable isotopes of samples to determine the salinity, temperature, pH e Eh conditions during deposition

Estrutura da população de Coleodactylus natalensis Freire, 1999 (Squamata: Sphaerodactylidae) no Parque Estadual Dunas de Natal, Rio Grande do Norte, Brasil

Coleodactylus natalensis Freire, 1999, an endemic species of Atlantic Forest fragments around the Natal municipality, Rio Grande do Norte State, Brazil, has as type locality the Parque Estadual Dunas de Natal (05º48 S to 05º53 S and 35º09 W to 35º12 W), one of the largest restinga (herb and shrub association on sand dunes along the Brazilian coastline) associate fragment, surrounded by urban zone, placed on setentrional Atlantic Forest limits. We made estimates on populational density, spatial distribution, habitat and microhabitat preferences and feeding ecological aspects like sazonal and sexual variations on diet, prey electivities and niche breadth. We randomly sampled ninety-six 50m2 quadrants in each of the four habitats identified in the study area. Were collected 49 specimens and their stomach contents were analyzed; prey items found were correlated with leaf-litter invertebrates from habitat samples. We found a 98,5 ± 75,5 individuals/ha density, in grouped distribution pattern on densest habitats and random distribution on others habitats. This species lives mostly on leaf-litter in forest habitats, in higher humidity points, with lower temperatures, deeper leaf litter and lower sea level elevations than the randomly chosen points in the study area. Isopoda and Aranae were the most important prey categories in numeric, frequency and volumetric terms. Niche breadth has an intermediate value and was variable in sexual and in habitat terms. There was no correlation between morfometric measures and prey size on diet. The C. natalensis population studied seems to be diet opportunist, although selects larger prey items. The Parque Estadual das Dunas do Natal has several indications of anthropic pressure from the surrounding urban area that may affects the local C. natalensis population. Thus, the fragility of this species calls for urgent conservation efforts

Estretégias de acasalamento e qualidade do espermatóforo em heliconius (Lepidoptera, Nymphalidae)

Butterflies are insects known, in a variety of environments and for easy visual identification. The adult form may be frequently found in flowers looking for nectar. However, for many species of Heliconius (Lepidoptera, Nymphalidae) to visit the flower also represents the collecting of pollen, an important source of protein for adults. The protein obtained from the pollen allows the maintenance of physiological processes that increase the performance of the individual, promoting greater longevity and egg production. For males, proteins can also be part in your investment in reproductive success and fitness of offspring through a nutritional contribution that is transferred to the female in the act of mating as a nuptial present. It is known that this protein contains essential to the performance of the female oviposition, however the proportion of content and specific importance to the monogamous and polygamous species is not known yet. Whereas the species studied in this work have different patterns of mating in the strategy was to verify a significant difference in the quality of the spermatophore, and H. erato and H. melpomene, on the amount of protein present in this structure, indicating a difference in investment between the male reproductive strategies

Análise das matrizes curriculares dos cursos de Comunicação Social com habilitação em Jornalismo no Brasil: um retrato da realidade nacional

O artigo em questão é fruto de pesquisa sobre a educação jornalística e teve como objeto as matrizes curriculares de todos os cursos de Comunicação Social com habilitação em jornalismo do Brasil. O objetivo foi o de fazer um diagnóstico das estruturas curriculares do referido curso em todas as regiões do país e depois consolidar um desenho da estrutura nacional. Utilizamos como metodologia a pesquisa quantitativa e qualitativa. Nossas principais constatações foram em primeiro lugar a de que o espaço destinado aos conteúdos de Síntese/Comunicação na estrutura curricular de todas as regiões é mínimo, o que dificulta a inter-relação entre a teoria e a prática. em segundo lugar pudemos verificar que, apesar das premissas previstas nas DCN para o curso de Comunicação Social, as realidades regionais não estão contempladas nas matrizes curriculares dos cursos.

Discursos e práticas na formação de profissionais fisioterapeutas: a realidade dos cursos de fisioterapia na região nordeste do Brasil

This study had a multidisciplinary focus, investigating the areas of health and education, and proposes to discuss the formation of health professionals, requiring their understanding of the factors involved in the production of knowledge, given that this formation has an impact on the quality of human and social life. The aim of this work was to investigate the relationship existing between the process of physical therapist formation and the practical activities developed during the undergraduate course in the Northeast of Brazil. This is an exploratory descriptive study with qualitative significance. The sample consisted of 73 subjects (33 professors and 40 students) from 6 physical therapy courses at different institutions in the Northeast of Brazil. Data collection was conducted through focus group interviews. In addition, we used a school assessment instrument from the health area. The data, analyzed using dialectical hermeneutics, showed that the Northeast of Brazil has the second largest number of physical therapy courses in the country, with 93 (11 public and 82 private) out of a total of 510. These numbers represent a growth of 1062.5% since 1991. The pedagogical projects are guided by National Curricular Directives as well as by the country s health system. The prevalent pedagogy is that of transmission, and the contents/disciplines are generally not integrated with practice, a situation that hinders the integrality and interdisciplinarity of health care. It can be concluded that there is a need for implementing integrated curricula and for better qualified professors to effectively put this process into practice

Corpo, comunicação e educação

O objetivo deste artigo é discutir as dificuldades de comunicação de conteúdos relacionados ao corpo humano, no contexto dos processos de ensino e de aprendizagem na escola fundamental e média. Através da exposição das necessidades dos alunos e das reticências dos professores, apresenta-se algumas teorias sociais como estratégia mediadora e viabilizadora do melhor desempenho da ação pedagógica e da contribuição escolar para a constituição do educando enquanto sujeito social.

Mobilização de reservas e partição de metabólitos durante a germinação da semente e o estabelecimento da plântula em moringa

Seed germination and seedling establishment are critical processes for commercial plantation and depend directly on reserve mobilization as a source of cellular fuels and biosynthetic precursors. In this way, we investigated the coordination among reserve mobilization, metabolite partitioning, and mobilizing enzyme activities in Moringa oleifera Lam (moringa) an oil-seeded species employed in biofuel production. Seeds were germinated under controlled conditions and seedlings were grown hydroponically at a greenhouse. Samples were harvested at 0, 4, 8, 10, 12, 16, and 20 days after imbibition (DAI). The contents of dry mass (DM), neutral lipids (NL), soluble proteins (SP), starch, total soluble sugars (TSS), non-reducing sugars (NRS), and total free amino acids (TFAA) as the activity of isocitrate lyase (ICL), acid proteases, and amylases were determined. The mobilization of storage proteins was initiated during seed germination whereas the mobilization of storage lipids and starch was triggered throughout seedling establishment although all reserves have been depleted until 20 DAI. The partitioning of DM and metabolites to the roots and the shoots was uneven during seedling establishment. Low shoot/root ratio on the basis of DM could be related to the natural occurrence of moringa in drought climates. In the roots, TSS, NRS, and TFAA were accumulated from 12 to 16 DAI and then were consumed until the end of the experiment. In the shoots, TSS and TFAA were consumed in parallel with NRS accumulation from 12 to 20 DAI. The activity of ICL, acid proteases, and amylases was coordinated with the mobilization of lipids, proteins and starch respectively. Thus, we propose that the patterns of reserve mobilization and metabolite partitioning verified in moringa seem distinct from those found to other tree species and may be involved in metabolic strategies to enable environment colonization

A vestimenta e a moda: uma análise da revista estilo

This research addresses the consumption of women's fashion, through an analysis of the contents of the Estilo magazine. This magazine is an licensing of American Instyle, directed at the female, published by Editora Abril in Brazil since 2002. To guide this research, in relation of the fashionable field, some relevants concepts and authors were worked, like Pierre Bourdieu, Gilda de Souza Melo, Georg Simmel, Gilles Lipovetsky among other fundamental to understanding both the consumption and fashion. Still in search of understanding the discourses that permeated the fashion world were done semi-structured interviews with two costume designers who work in two different shops specializing in fabrics in the Natal's city. Were analyzed Estilo magazines published from June 2008 to June 2009, relating to the data collected in interviews in order to understand how discourses are constructed and disseminated, becoming so efficient in the seduction of women's groups which is directed to achieve and consolidate the production of appropriate and acceptable form to wear

Conto com o seu voto: marketing político eleitoral no primeiro turno das eleições presidenciais de 2010

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Atividade microbiana do solo em pomar de laranja em resposta ao cultivo de adubos verdes

Adubos verdes (AVs) são condicionadores do solo utilizados para a melhoria da estrutura e fertilidade do solo. Este estudo avaliou o efeito de Crotalaria spectabilis Roth (crotalária), Cajanus cajan (L) Millsp (guandu) e Brachiaria decumbens Stapf (braquiária) nas propriedades microbiológicas e bioquímicas do solo sob laranjal. As leguminosas foram plantadas nas entrelinhas do laranjal e, após 3 meses, cortadas e lançadas nas entrelinhas. A braquiária, já estabelecida, foi roçada e lançada nas entrelinhas. Após 5 meses, as amostras de solo foram coletadas na entrelinha e na linha, na profundidade de 0-20 cm. O delineamento experimental foi em parcela subdividida. Efeito significativo (p< 0,05%) da aplicação dos AV sobre as contagens de bactérias, as atividades da desidrogenase e nitrificante foram obtidas e aumentaram, em média, de 20, 39 e 190%, respectivamente. O número de fungos diminuiu de 57%. A atividade da urease e a solubilizadora, e os conteúdos de matéria orgânica e umidade não foram influenciados pela aplicação dos AVs. Dentre as plantas, respostas significativas foram obtidas decorrentes do estímulo da atividade da desidrogenase em 57% pelo guandu, da urease em 58% pela braquiária, solubilizadora em 346% pela crotalária e nitrificante em 236% pelo guandu ou braquiária em relação aos demais AVs. Estes resultados sugerem que a aplicação de AVs durante anos consecutivos pode estimular a ação dos microrganismos e melhorar a qualidade do solo.

Planejamento em saúde no Brasil: convergências e divergências entre instâncias de gestão

Trata-se de uma investigação que busca revelar convergências e divergências no processo de planificação da Política Pública de Saúde, com foco primordial na participação dos organismos de representação social na consolidação do Sistema Único (SUS), destacando a Conferência Nacional de Saúde CNS, instância que deve ter participação obrigatória na formulação de recomendações para essa política estatal. Considera que a planificação reúne elementos de concepção jurídica, técnica e política para a elaboração dos documentos intitulados Planos Nacionais de Saúde PNS. A partir de pesquisa qualitativa de base documental e argumentação com apoio de Cartografia Simbólica, põe em exame o processo de elaboração e o teor presente nos relatórios da 12ª (2003), 13ª (2007) e 14ª CNS (2011), alinhando seus eixos, diretrizes e prioridades nos correspondentes PNS nos quadriênios 2004-2007, 2008-2011 e 2012-2015. A escolha desses instrumentos, na temporalidade sugerida, tem por esteio o período em que a implantação do sistema de Planejamento do SUS PlanejaSUS, orienta normativa e tecnicamente a elaboração do PNS, tendo como uma de suas referências o que foi emanado das conferências. Propõe-se verificar as tensões existentes entre momentos distintos da definição das prioridades elencadas nas políticas públicas de saúde à luz das contribuições teóricas sobre a concepção do Estado, numa visão contemporânea associada à sua dinâmica de atuação vinculada ao modo de produção e acumulação capitalista; sobre a metodologia do Planejamento Estratégico com base na participação de atores diversos; e ainda, na análise sobre a expressão desse participacionismo na ótica dos processos democráticos representativos no SUS. Na confecção dos mapas cartográficos foi proposta a correlação entre os conteúdos dos Relatórios das 12ª a 14ª conferências de saúde com o que está expresso nas prioridades constantes nos Planos Nacionais de Saúde (2004 a 2007, 2008 a 2011 e 2012 a 2015), verificando-se aproximações e distanciamentos existentes entre o que expressa a sociedade e a política governamental. Conclui-se que, do exame crítico entre as diretrizes e prioridades contidas no acervo documental existente e sua metodologia de construção, com fundamento na argumentação do aporte teórico trabalhado, são verificadas tensões e harmonizações que revelam pontos convergentes e dissonantes das pactuações e consensos entre os atores sociais representantes dos segmentos, no qual critério da representatividade condiciona a defesa de opiniões, interesses e prioridades, de modo diverso para os que estão implicados nesse processo de planificação

Brincar, atividade humana e ferramenta pedagógica no contexto escolar da região metropolitana de natal

This thesis talks about the use of guided educational tools in play and playful in public schools in the Metropolitan Region of Natal (MRN), contributing to the teaching and students learning of basic education in the contents of portuguese and mathematics. We assume that the play is an activity / human need and therefore implies the proper development of children in physical, psychological, biological, cultural, social and historical aspects. We consider the mediation exercised by the teacher in the classroom, and the affection existing between teacher and student, sine qua non terms, so that the truth and fact of the process of teaching and learning occur. Thus, theoretically collaborated Paulo Freire, with his dialogical vision; Lev S. Vygotsky says that we learn and why we develop; Lev S. Vygotsky that states that we learn and for that we develop ourselves; Pierre Bourdieu and the concept of habitus, as something embedded and therefore procedural, and the cultural capital that needs to be fed and (re)meaning at school; Luiz Pereira, Bernard Lahire, Gilles Brougère and others brought their theoretical contributions. The empirical field of research was composed by the Municipal School Professor Ulysses de Góis, located in the neighborhood of Nova Descoberta in Natal, and the Municipal School José Horacio de Góis, located in the community of Guanduba, in São Gonçalo do Amarante, municipalities of the Metropolitan Region of Natal (MRN). We used as methodology the collaborative-action-research as a possible of effective participation of the research subjects, imputing them a voice and performance in the process, and not considering them just observers. The results indicate the effectiveness of the pedagogical tools in play and playful to the learning of students, but that alone is not able to solve all the problems of the school, other referrals need to be secured, as the planning of the actions to be developed in the school and in the classroom, systematized pedagogical orienttion for faculty, family participation/involvement in the school life of students, among other actions that need to be weighted so that education fulfills its role and promote the emancipation of the subject, because in the freireana liberating perspective, "the reading of the world preced the lecture of the word"

Os processos comunicacionais na festa de São Sebastião Bairro do Alecrim Natal/RN

Parties are one of the most communicative languages, full of contents and symbolic meanings. The devotion to the saints is a kind of communication. In this thesis communicational processes, its languages and its flows are sought at the Saint Sebastian s party, at Alecrim neighborhood, in Natal/RN. The view is focused on the individuals and collective behaviors, in a dynamic which involves the saint s interlocutors at the party space, which supports the pre-novena, the novena and the procession. It tries to show through observation, ethnography and interviews the elements that composes the symbolic language present on the gestures, on the performances and bodies movements, on the clothing colors, as well as on what is said orally or in silence, on the spontaneous prayers or pre-elaborated ones, on the written messages that the devout addresses to the saint at the patron s festivity