Extensão universitária e formação cidadã: a UFRN e a UFBA em ação

Se parte de la comprensión de Universidad como un campo científico que permite elecciones, conflictos y luchas internas y externas, en sus dimensiones históricas y temporales, proponiéndose comprenderla en su naturaleza institucional. Históricamente, la universidad viene respondiendo a demandas de la sociedad, configurándose en momentos de crisis de institucionalidad, de hegemonía y de legitimidad. Tales crisis profundizase en el contexto de la globalización hegemónica, pero, al lado de esta, emergen experiencias en el campo de la globalización alternativa. De ello adviene los siguientes desafíos: considerados en este trabajo como cuestiones a contestar: ¿cómo la Universidad pública brasileña podrá actuar en una perspectiva de formación ciudadana, interagiendo con la sociedad en la cual está inserida? ¿Cómo poderemos vislumbrar caminos alternativos para la universidad enfrentar desafíos y para conquistar a su legitimidad? Se discute la extensión universitaria como una de las alternativas para que tales universidades enfrenten sus crisis y desafíos, a la medida en que posibilita el diálogo con la sociedad en su entorno, promoviendo la formación ciudadana. Se tiene como objetivo comprender e interpretar la extensión universitaria en su práctica efectiva en las comunidades en las que las experiencias fueron desarrolladas, analizándose dos prácticas de extensión universitaria en la Universidad Federal del Rio Grande do Norte y en la Universidad Federal de Bahia, a través de la interpretación de la participación de profesores, alumnos y comunidad en dos programas: Saúde e Cidadania (SACI/UFRN), y Atividade Curricular em Comunidade (ACC/UFBA), en el período de 2001 a 2005. Se busca en el diálogo con los participantes envueltos, conocer las experiencias y como estas contribuyen para la compresión de universidad con sus funciones direccionadas para la formación ciudadana. Como procedimientos metodológicos, se hace un análisis de la documentación de las experiencias, complementadas por entrevistas sémi-estructuradas, envolviendo 51 sujetos en los dos programas, para aprehender a la historia y comprender la participación de los alumnos, profesores e integrantes de las comunidades, en Natal/RN y Salvador/BA. Para presentación de las voces de los participantes, se cría diálogos temáticos, mapeando expresiones que surgieron en el habla de los Pro- Rectores de Extensión y Pro-Rector de Graduación, alumnos, profesores y participantes de las comunidades envueltas, identificándolas en movimientos creativos y llenos de significados, entre ellas: vivencia y acción; interacción y diálogo; identidad y práctica solidaria; generosidad y responsabilidad; ciudadanía y condición humana; saber contextual y crítico. Estas prácticas y sentimientos traducen bien la participación de los sujetos envueltos, dialogando sobre la compresión de Universidad y extensión universitaria direccionada para la formación ciudadana. Se concluye que estas experiencias contribuyen para pensar una Universidad actuante, dialogando con los intereses de la comunidad, sin perder su autonomía, formando profesionales responsables, solidarios y ciudadanos, actuando en la construcción de un conocimiento que pueda contribuir en la superación de la crisis de legitimidad desarrollando experiencias inseridas en la globalización alternativa, contra-hegemónica, ya que contemplan acciones para la superación de las desigualdades sociales, en la lucha por la emancipación social de los sujetos participantes

Trajetórias da adoção cadastral em Fortaleza: o Estado modelando as relações familiares

Esta disertación tiene como objetivo principal identificar las motivaciones de los adoptantes catastrales, pues la regularidad estadística en el universo adoptivo nacional apunta para una preferencia por las adopciones al modo brasileño o listas. La hipótesis principal señala que las caracterizaciones de los sujetos en foco, en cuanto a su pertenencia religiosa y al nivel de educación formal, ejercen fuerte influencia en su opción por la adopción catastral. Apoyándose en la teoría del habitus de Pierre Bourdieu, se pudo constatar que la cultura individual es lo que orienta los límites de la acción de los sujetos y, en el caso de los adoptantes catastrales, en sus diferentes habitus, se encuentra la explicación para sus trayectos y tentativas adoptivas. Es importante recordar que sus habitus son unificados por el Estado. En la colecta y análisis de los datos, se realizó un trabajo cualitativo y cuantitativo fundamentado en los siguientes recursos: observación directa, consultas de documentos oficiales, aplicación de formularios y entrevistas semiestructuradas. Las observaciones fueron realizadas en instituciones relacionadas al proceso de las adopciones catastrales, así como mediante encuestas sobre los adoptantes. Se analizaron, también, documentos referentes al regimiento de esas instituciones, especialmente en cuanto a las orientaciones relativas a la práctica adoptiva estudiada. Se observó una discrepancia entre el discurso oficial y lo que efectivamente las instituciones practican en su cotidiano. Por fin, en cuanto a las entrevistas realizadas con los adoptantes, fue verificado que ellos tienen un nivel socioeconómico y formación escolar superior a la media de la población de la ciudad de Fortaleza, así como participan de alguna comunidad religiosa y son miembros de familias que representan el modelo socialmente dominante nuclear burgués

Relações de poder, fragmentação e gestão do território no semi-árido nordestinho: um outro olhar sobre o Cariri paraibano

This study aims to analize the Cariri Paraibano territory, as a product of relations of power that were being established along its historic process of territory formation. In this process, the fragmentation and the territory management are fundamental elements to socioterritorial reality comprehension. The theoretical-conceptual basis is based on notions of territory, region, power and territory management, which are articulated to the opinions and empiric confirmations origined from interviews made with several social actions. They also were made photographical records and researches on books, newspapers and magazines, as well on other information sources related to the object of studying. Obtained data confirm the pressuposement on which the relations of dominations and the used methods by the power s owners in the region created a little fruitful political practice and little adequate to the process of active participation of the local population on the territory management, even being on disagreement with the new political-institutional mechanisms, which take to political-administrative more democratic and participative in the country

Efeitos do enriquecimento com nutrientes (N e P) em diferentes condições de luz sobre o crescimento do fitoplâncton em um reservatório eutrófico no semi-árido brasileiro

The increasing of pollution in aquatic ecosystems in the last decades has caused an expansion of eutrophication and loss of water quality for human consumption. The increase of frequency and intensity of cyanobacteria blooms have been recognized as a major problem connected to water quality and eutrophication. The knowledge of environmental factors controlling these blooms is a key step towards the management for recovering aquatic ecosystems from eutrophic conditions. Primary productivity in aquatic ecosystems is dependent on light and nutrients availability. In the present work we evaluated the relative importance of the concentration of major nutrients, such as phosphorus and nitrogen, and light for phytoplankton growth in the main water reservoir of Rio Grande do Norte State, named Engenheiro Armando Ribeiro Gonçalves (EARG), which is an eutrophic system, dominated by potentially toxic cyanobacteria populations. Limitation of phytoplankton growth was evaluated through bioassays using differential enrichment of nutrients (N and/or P) under two light conditions (low light and high light) and monthly monitoring of chlorophyll-a and nutrients (total nitrogen and phosphorus) concentrations, and water transparency (Secchi depth) at the pelagic region. Our results confirm that EARG reservoir is an eutrophic system with a low water quality. Results of bioassays on the growth of phytoplankton limitation (N or P) were conflicting with the results predicted by the TN:TP ratios, which indicates that these ratios were not a good indicator of algal growth limitation. Nitrogen was the limiting nutrient, considering both frequency and magnitude. Light and hidrology affected phytoplankton response to nutrient enrichment. The extreme eutrophic conditions of this reservoir, dominated by cyanobacteria blooms, demand urgent managing strategies in order to guarantee the multiple uses for this system, including water supply for human population. Although nitrogen is the limiting nutrient, an effective management program must focus on the reduction of both phosphorus and nitrogen input

Padrões distintos de congruência climática em duas espécies invasoras de prosopis em zonas semi-áridas da América do Sul

Based on climate data and occurrence records, ecological niche models (ENM) are an important opportunity to identify areas at risk or vulnerable to biological invasion. These models are based on the assumption that there is a match between the climatic characteristic of native and invaded regions predicting the potential distribution of exotic species. Using new methods to measure niche overlap, we chose two exotic species fairly common in semi-arid regions of South America, Prosopis juliflora (Sw.) D.C. and Prosopis pallida (H. ; B. ex. Willd) HBK, to test the climate matching hypothesis. Our results indicate that both species occur with little niche overlap in the native region while the inverse pattern is observed in the invaded region on South America, where both species occur with high climatic overlap. Maybe some non-climate factor act limiting the spread of P. pallida on the native range. We believe that a founder effect can explain these similarities between species niche in the invaded region once the seeds planted in Brazil came from a small region on the Native range (Piura in Peru), where both species occur sympatric. Our hypothesis of a founder effect may be evident when we look at the differences between the predictions of the models built in the native and invaded ranges. Furthermore, our results indicate that P. juliflora shows high levels of climate matching between native and invaded ranges. However, conclusions about climate matching of P. pallida should be taken with caution. Our models based on climatic variables provide multiple locations suitable for occurrence of both species in regions where they still don t have occurrence records, including places of high interest for conservation.

Políticas públicas para o turismo e desenvolvimento local: reflexões a partir dos "caminhos de fé" no semi-árido potiguar

This study analyzes the event of the Feast of Our Lady of Grace, located in the municipality of Florania / RN as a tourism product, inserted in a process of transformation of a sacred place, in principle determined by religious motives, in a destination "tourist-religious". We seek to understand to what extent state intervention, with policies aimed at boosting the tourism sector as well as the interactions among key actors in the space, are able to modify and streamline the city of Florania, particularly Feast of Our Lady of Grace. The methodology also includes the review of the literature using the deductive method the application of questionnaires to the pilgrims, tourists and pilgrims totaling 150 questionnaires. Along with the economic agents of the municipality, 36 questionnaires were administered according to the model adopted by REDESIST. Complement this research interviews with key Officials of the Municipal Government and the Church. Despite the recognition by the actors of the importance of tourism to the economy of the city of Florania, encouraging the development of the sector is still lagging, some worked and policies / programs listed actually pass by the "Paths of Faith" of Florania. Concerning the Feast of Our Lady of Grace, the bottlenecks reported by researchers and economic agents are very partially affected by the policies / programs and when this occurs, the effort seems to be only reactive, resulting from the pressures experienced by the municipal government (mayor)

Prevalência de rotavírus do grupo A em fezes diarréicas de bezerros de corte em sistema semi-intensivo de produção

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Infectious bronchitis virus: detection and vaccine Strain differentiation by semi-nested RT-PCR

A semi-nested reverse transcription-polymerase chain reaction (Semi-N-RT-PCR) was developed and used to detect the S glycoprotein gene of infectious bronchitis virus (IBV) strains and to discriminate H120 vaccine strain from other strains. Viral RNA was extracted from the allantoic fluid of chicken embryos and from tissues of chickens experimentally infected with different strains of IBV. Amplification and identification of the viral RNA was performed using two sets of primers complementary to a region of the S glycoprotein gene in the Semi-N-RT-PCR assay. The pair of primers used in the first PCR consisted of universal oligonucleotides flanking a more variable region of S1-S2 gene. The second primer pair was used in the Semi-N-RT-PCR and was comprised of one of the primers from the first universal pair together with either another universal internal oligolucleotide or a oligonucleotide sequence specific for the H120 strain of IBV. The universal primers detected all reference IBV strains and field isolates tested herein. The Semi-N-RT-PCR had high sensitivity and specificity, and was able to differentiate the H120 vaccine strain from other reference IBV strains; including M41 strain. All tissue samples collected from chickens experimentally infected with H120 or M41 strains were positive in the semi-nested RT-PCR using universal primers, while only the H120-infected tissue samples were amplified by the set of primers containing the H120-oligonucleotide. In conclusion, the ability of Semi-N-RT-PCR to detect distinct IBV strains and preliminarily discriminate the vaccine strain (H120) closes a diagnostic gap and offers the opportunity to use comprehensive PCR procedures for the IBV diagnosis.

Degenerative process and cell death in salivary glands of Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) semi-engorged female exposed to the acaricide permethrin

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Cell Death in Salivary Glands of Rhipicephalus (Boophilus) microplus (Canestrini, 1887) (Acari: Ixodidae) Females at Semi-engorged Feeding Stage

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Assessment of agroeconomic indices in polycultures of lettuce, rocket and carrot through uni- and multivariate approaches in semi-arid Brazil

The polyculture among vegetables is an activity that to have good results, needs a proper planning. Although it often requires more labor, has several advantages over monoculture, among them is that polycultures are generally are more productive, provide with productivity of various plant constituents and a more balanced human diet, contribute to economic return, economic and yield stability, social benefits and farmer's direct participation in decision-making. The objective of this study was to evaluate agroeconomic indices of polycultures derived from the combination of two cultivars of lettuce with two cultivars of rocket in two cultures strip-intercropped with carrot cultivar 'Brasilia' through uni-multivariate approaches in semi-arid Brazil. The experimental design used was of randomized complete blocks with five replications and the treatments arranged in a factorial scheme of 2 x 2. The treatments consisted of the combination of two lettuce cultivars (Baba de Verao and Taina) with two rocket cultivars (Cultivada and Folha Larga) in two cultures associated with carrot cv. Brasilia. hi each block were grown plots with two lettuce cultivars and two rocket cultivars, and carrot in sole crop. In each system was determined the lettuce leaf yield, rocket green mass yield and carrot commercial yield. Agrieconomic indices such as operational cost, gross and net income, monetary advantage, rate of return, profit margin, land equivalent ratio and yield efficiency for DEA were used to measure the efficiency of intercropping systems. In the bicropping of lettuce and rocket associated with carrot cv. 'Brasilia', suggests the use of lettuce cultivar 'Taina' combined with rocket cultivars 'Cultivada' or 'Folha Larga'. It was observed significant effect of lettuce cultivars in the evaluation of polycultures of lettuce, carrot and rocket, with strong expression for the lettuce cultivar 'Taina'. Both uni- and multivariate approaches were effective in the discrimination of the best polycultures. (C) 2011 Elsevier Ltd. All rights reserved.

Characterization of condensed tannins from native legumes of the Brazilian northeastern semi-arid

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeito dos taninos condensados de forrageiras nativas do semi-árido nordestino sobre o crescimento e atividade celulolítica de Ruminococcus flavefaciens FD1

Avaliaram-se o crescimento da população, a atividade in vitro da enzima 1,4-b-endoglucanase e a taxa de digestão de celulose em culturas de Ruminococcus flavefaciens FD1 na presença de 50, 100, 200 e 400µg/ml de taninos purificado das leguminosas Mimosa hostilis (Jurema Preta), Mimosa caesalpinifolia (Sabiá) e Bauhinia cheilantha (Mororó). O crescimento bacteriano, a atividade da endoglucanase e a digestão de celulose foram fortemente inibidos pela presença dos taninos condensados purificados das três espécies, entretanto, a intensidade da inibição foi variável em função da espécie da leguminosa e da concentração de tanino.

Latent heat loss of dairy cows in an equatorial semi-arid environment

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Um sistema de visão para navegação robusta de uma plataforma robótica semi-autônoma

Large efforts have been maden by the scientific community on tasks involving locomotion of mobile robots. To execute this kind of task, we must develop to the robot the ability of navigation through the environment in a safe way, that is, without collisions with the objects. In order to perform this, it is necessary to implement strategies that makes possible to detect obstacles. In this work, we deal with this problem by proposing a system that is able to collect sensory information and to estimate the possibility for obstacles to occur in the mobile robot path. Stereo cameras positioned in parallel to each other in a structure coupled to the robot are employed as the main sensory device, making possible the generation of a disparity map. Code optimizations and a strategy for data reduction and abstraction are applied to the images, resulting in a substantial gain in the execution time. This makes possible to the high level decision processes to execute obstacle deviation in real time. This system can be employed in situations where the robot is remotely operated, as well as in situations where it depends only on itself to generate trajectories (the autonomous case)